Manuscript 2007-4-17 Perspectives on Team Dynamics Meta Learning and Systems Intelligence C
省级英文期刊发表
省级英文期刊发表As a document creator on Baidu Wenku, I would like to share some insights on how to get your work published in a provincial English journal. 。
First and foremost, it is essential to conduct thorough research on the provincial English journals available. This includes understanding the scope of the journal, the type of articles they typically publish, and their submission guidelines. By familiarizing yourself with the journal's preferences, you can tailor your work to better fit their requirements, increasing your chances of acceptance.Once you have identified a suitable journal, it is crucial to prepare your manuscript according to their specific guidelines. This may include formatting requirements, citation styles, and word limits. Adhering to these guidelines demonstrates your professionalism and respect for the journal's editorial process.In terms of the content of your manuscript, it is important to ensure that your work is original, well-researched, and contributes meaningfully to the field. This may involve conducting experiments, surveys, or analysis to generate new insights or perspectives. Additionally, your writing should be clear, concise, and engaging, capturing the interest of the journal's readers.After preparing your manuscript, it is advisable to seek feedback from peers or mentors in your field. Constructive criticism can help identify areas for improvement and strengthen the overall quality of your work. Additionally, consider revising and editing your manuscript multiple times to ensure that it is polished and error-free before submission.When submitting your work to a provincial English journal, it is important to follow their submission process carefully. This may involve creating an account on their online submission system, providing necessary information about your manuscript, and uploading the document in the required format. Pay close attention to any additionalmaterials or documents requested by the journal, such as author disclosures or conflict of interest statements.Finally, after submitting your manuscript, it is important to be patient and proactive. The review process for academic journals can take time, and it is not uncommon to receive requests for revisions or additional information from the journal's editorial team. Stay responsive to any communication from the journal and be prepared to address any feedback or concerns they may have.In conclusion, getting published in a provincial English journal requires careful preparation, attention to detail, and a commitment to producing high-quality work. By understanding the journal's preferences, preparing a strong manuscript, and following their submission process diligently, you can increase your chances of success in getting your work published. Good luck!。
《广告的终结:必死之因、重生之道》(第三章节选)翻译实践报告
A Report on the Translation of The End of Advertising:Why It Had to Die,and theCreative Resurrection to Come(Chapter3)ByZhang ChaoA Thesis Submitted to the Graduate Schoolof Sichuan International Studies UniversityIn Partial Fulfillment of the Requirementsfor the Degree ofMaster of Translation and InterpretingUnder the Supervision of Associate Professor Zhong YiMay2018《广告的终结:必死之因、重生之道》(第三章节选)翻译报告摘要本篇翻译报告原文节选自安德鲁•埃瑟斯(Andrew Essex)所著的《广告的终结:为何必然会终结、如何创新为新生》(The End of Advertising:Why It Had to Die,and the Creative Resurrection to Come)。
该书于2017年Spiegel&Grau杂志社出版,探讨了广告未来发展的新形式和趋势。
根纽马克理论,原文主要为信息型文本。
译者选取本书第三章为翻译报告原文,以纽马克的交际翻译理论为指导,注重目的语读者的理解与反应,努力使目标语摆脱原文语言形式的桎梏,旨在打造简明、流畅、忠实的译文。
本篇报告包括五章:第一章详述了选择第三章作为翻译文本的原因,以及翻译项目的背景和意义;第二章介绍了原文的作者及主要内容,并分析了原文;第三章介绍了报告中翻译指导理论——交际翻译理论,它指导译者在翻译中必须以目的语读者为导向,让目的语读者和原文读者产生相近的理解反应;第四章中是从交际翻译的角度出发,对翻译中存在的难点和重点如专业术语、修辞手法、长难句进行解读,并提出了对应的解决方法;最后一章为结论,总结翻译项目中所得的经验、亮点和不足之处。
1994---2007年第4届---第17届初中物理竞赛初赛复赛共28套真题与详细解释
1994年第三届全国初中应用物理知识初赛试题一、选择题(共36分,每小题3分)下列各题所列答案中只有一个是正确的。
把正确答案前面的字母填在题后的括号内。
1.按我国交通管理部门最近规定,坐在小汽车前排的司机和乘客都应在胸前系上安全带,这主要是为了减轻在下列哪种情况出现时可能对人造成的伤害。
( )A.车速太快。
B.车速太慢。
C.紧急刹车。
D.突然起动。
2.一个质量为50千克的人,他整个身体的体积大约是( )A.0.005米3。
B.0.01米3。
C.0.05米3。
D.0.l米3。
3.有四种器材:(1)自行车座;(2)机械手表;(3)衣服夹子;(4)发令手抢。
其中利用弹簧形变的势能转化为动能工作的有( )A.(1)和(2)。
B.(2)和(3)。
C.(1)和(4)。
D.(2)和(4)。
4.有四种飞行器:(l)直升飞机;(2)飞艇;(3)热气球;(4)滑翔机。
其中利用空气浮力升空的是( )A.(1)和(4)。
B.(2)和(3)。
C.(1)和(3)。
D.(2)和(4)。
5.手持抽气、打气两用气筒的构造如图1所示,a为筒身,B为活塞,C和J是气门装置,类似于自行车内胎上套有气门芯的气门嘴,起阀门作用。
使用这种气筒时( )A.接D气门,起打气作用;接c气门,起抽气作用。
B.接D气门,起抽气作用;接C气门,起打气作用。
C.向外拉活塞,2个气门都起抽气作用。
D.向里推活塞,2个气门都起打气作用。
6.我国农村使用的一种钢架水泥壳抛物面太阳灶,用30分钟刚好可将4千克与气温(26.5℃)相同的水烧开。
若不计热损失,此时这个太阳灶的功率为( )A.163瓦。
B.686瓦。
C.933瓦。
D.41160瓦。
7.在制药时,为从溶液中提取抗菌素,要用加热的方法使水沸腾而除去水分,但抗菌素不能在超过80℃的条件下提取,应采用的方法是( )A.增加容器内的气压,使水的沸点低于80C。
B.降低容器内的气压,使水的沸点低于80C。
C.缩短加热沸腾的时间。
Manuscript_formatting
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cm070779c
Photoluminescence and Charge-Transfer Complexes of CalixarenesGrafted on TiO2NanoparticlesJustin M.Notestein,Enrique Iglesia,*and Alexander Katz*Department of Chemical Engineering,Uni V ersity of California at Berkeley,Berkeley,California94720 Recei V ed March21,2007.Re V ised Manuscript Recei V ed July3,2007Calix[4]arenes and thiacalix[4]arenes,cyclic tetramers of phenol,are synthesized with para position (upper rim)tert-butyl,Br,and NO2groups and grafted covalently onto surfaces of TiO2nanoparticles up to a geometrical maximum surface density of0.30nm-2.Grafted calixarenes are hydrolytically stable and are shown to exist in their‘cone’conformation from comparison with model materials synthesized by grafting preformed calixarene-Ti complexes.Individually,protonated calixarenes and TiO2absorb only UV light,but calixarene-TiO2hybrid organic-inorganic materials absorb light at significantly lower energies in the visible range(>2.2eV,<560nm),reflecting ligand-to-metal charge transfer(LMCT) between calixarene and Ti centers on surfaces of TiO2nanoparticles.These absorption energies do not depend on the identity and electron-withdrawing properties of upper rim groups in calixarenes.However, the steady-state photoluminescence emission of the calixarene-TiO2hybrid material is weakened uniformly throughout the excitation spectrum when compared with the material before calixarene grafting,and these effects become stronger as calixarene upper rim substituents become more electron-withdrawing. The single-step synthesis protocols described here electronically couple calixarenes with surfaces of oxide semiconductors,leading to sensitization of TiO2for absorption in the visible region and provide a systematic method for controlling and understanding surface dipole-mediated electron-transfer phenomena relevant to the photocatalytic and optoelectronic properities of TiO2.IntroductionThe modification of TiO2to enhance its ability to absorb photons in the visible spectrum is essential for many applications,including photocatalysis,1especially when using solar radiation.2,3This can be accomplished by synthesizing TiO2-based materials with framework substitutions3,4or by sensitizing TiO2surfaces with an adsorbed dye that transfers electrons from its excited state into the conduction band of the oxide semiconductor.5A different type of sensitization occurs when an organic molecule adsorbed on an oxide surface forms a charge transfer(CT)complex that absorbs radiation at a lower energy than either the molecule or the oxide particle.This sensitization occurs by direct injection of an electron from the ground state of the molecule into the conduction band of the particle without involvement of an excited molecular state.Phenols and related compounds are known CT sensitizers for TiO2,6-9and their adsorption geometry and charge-transfer mechanism have been previ-ously explored using spectroscopic,theoretical,and chemical methods.9-13Calixarenes represent a class of macrocyclic phenolic compounds,illustrated in Scheme1,previously unexplored as TiO2sensitizers.Their rich synthetic supramolecular host-guest chemistry14and their ability to form complexes with transition metals and main group elements at their lower*Corresponding author e-mail:askatz@(A.K.),iglesia@ (E.I.).(1)Linsebigler,A.L.;Lu,G.Q.;Yates,J.T.Chem.Re V.1995,95,735-758.Herrmann,J.M.Top.Catal.2005,34,49-65.(2)Meyer,G.J.Inorg.Chem.2005,44,6852-6864.(3)Anpo,M.;Takeuchi,M.J.Catal.2003,216,505-516.(4)Asahi,R.;Morikawa,T.;Ohwaki,T.;Aoki,K.;Taga,Y.Science2001,293,269-271.Sakthivel,S.;Kisch,H.Angew.Chem.,Int.Ed.2003, 42,4908-4911.Belver,C.;Bellod,R.;Stewart,S.J.;Requejo,F.G.;Fernandez-Garcia,M.Appl.Catal.B2006,65,309-314.Orlov,A.;Tikhov,M.S.;Lambert,R.M.C.R.Chim.2006,9,794-799.DiValentin,C.;Pacchioni,G.;Selloni,A.Chem.Mater.2005,17,6656-6665.Batzill,M.;Morales,E.H.;Diebold,U.Phys.Re V.Lett.2006, 96,26103.(5)Tributsch,H.Coord.Chem.Re V.2004,248,1511-1530.Hagfeldt,A.;Gratzel,M.Acc.Chem.Res.2000,33,269-277.(6)Kamat,P.V.J.Phys.Chem.1989,93,859-864.Moser,J.;Punchihewa,S.;Infelta,P.P.;Gratzel,ngmuir1991,7,3012-3018.(7)Tennakone,K.;Kumara,G.R.R.A.;Kumarasinghe,A.R.;Sirimanne,P.M.;Wijayantha,K.G.U.J.Photochem.Photobiol.A1996,94, 217-220.Tae,E.L.;Lee,S.H.;Lee,J.K.;Yoo,S.S.;Kang,E.J.;Yoon,K.B.J.Phys.Chem.B2005,109,22513-22522.(8)Misra,T.K.;Liu,C.-Y.J.Colloid Interface Sci.2007,310,178-183.(9)Ikeda,A.;Abe,C.;Torimoto,T.;Ohtani,B.J.Photochem.Photobiol.A2003,160,61-67.(10)Kim,S.;Choi,W.J.Phys.Chem.B2005,109,5143-5149.(11)Rego,L.G.C.;Batista,V.S.J.Am.Chem.Soc.2003,125,7989-7997.Liu,Y.;Dadap,J.I.;Zimdars,D.;Eisenthal,K.B.J.Phys.Chem.B1999,103,2480-2486.Tachikawa,T.;Tojo,S.;Fujitsuka, M.;Majima,ngmuir2004,20,na-Villarreal,T.;Rodes,A.;Perez,J.M.;Gomez,R.J.Am.Chem.Soc.2005,127, 12601-12611.Persson,P.;Bergstrom,R.;Lunell,S.J.Phys.Chem.B2000,104,10348-10351.Rajh,T.;Chen,L.X.;Lukas,K.;Liu, T.;Thurnauer,M.C.;Tiede,D.M.J.Phys.Chem.B2002,106, 10543-10552.Kilsa,K.;Mayo,E.I.;Brunschwig,B.S.;Gray,H.B.;Lewis,N.S.;Winkler,J.R.J.Phys.Chem.B2004,108,15640-15651.Martin,S.T.;Kesselman,J.M.;Park,D.S.;Lewis,N.S.;Hoffmann,M.R.En V iron.Sci.Technol.1996,30,2535-2542. (12)Agrios,A.G.;Gray,K.A.;Weitz,ngmuir2003,19,1402-1409.(13)Rajh,T.;Tiede,D.M.;Thurnauer,M.C.J.Non-Cryst.Solids1996,207,815-820.(14)Gutsche,C.D.Calixarenes;Royal Society of Chemistry:Cambridge,1992.Gutsche, C. D.Calixarenes Re V isited;Royal Society of Chemistry:Cambridge,1998.4998Chem.Mater.2007,19,4998-500510.1021/cm070779c CCC:$37.00©2007American Chemical SocietyPublished on Web09/07/2007(phenolic)rim 15make them potential candidates as molecules for semiconductor sensitization.There are many known complexes of tert -butylcalixarene derivatives and Ti com-pounds in which the highly multidentate interaction between a calixarene and Ti leads to very stable complexes.16Calixarenes have also been used to measure the concentration of Ti 4+ions in aqueous solutions using the ligand-to-metal charge-transfer (LMCT)absorption at ∼400nm arising from complex formation.17Some of these calixarene -Ti com-plexes have been characterized by single-crystal X-ray diffraction,18,19which offers structural models for possible adsorption geometries of calixarenes on TiO 2surfaces.Here,we report the grafting of calixarenes 1-4onto TiO 2to form stable surface complexes with structures inferred from soluble calixarene -Ti complexes.With these four calixarenes,we tailor the molecular dipole and acidity of the calixarene independently,which allows us to systematically explore the role of surface adsorbed species in modifying electron-transfer processes on (near)the surface of semiconductor particles,such as charge-transfer sensitization and photolu-minescence (PL).Understanding these surface phenomena is critical for efficient application of these TiO 2materials as photocatalysts and optoelectronic materials.Experimental MethodsThermogravimetry (TGA)was performed with a TA Instruments TGA 2950system using a flow of dry synthetic air (0.5cm 3s -1O 2and 1.5cm 3s -1N 2as boiloff from liquid)and a Pt pan at a heating rate of 0.083K s -1.Carbon contents were measured using a Perkin-Elmer 2400Series II combustion analyzer by the Berkeley Microanalytical Laboratory.Calixarene surface coverages were estimated by determining mass losses between 523and 1023K of the oxide material before and after calixarene grafting.BET surface areas and pore size distributions were determined by N 2physisorption using a Quantachrome Autosorb 6after degassing samples overnight at 393K.UV -visible spectra were measured at ambient conditions and temperature using a Varian Cary 400Bio UV -visible spectrophotometer with a Harrick Praying Mantis accessory for diffuse reflectance measurements of pressed poly(tetrafluoroethylene)was used as a perfect reflector standard.PL spectra of dry powders were measured using a Hitachi F-4500fluorescence spectrophotometer with a front-face solids reflectance accessory at ambient conditions and tem-perature;a Pyrex filter (UV-32,cutoff at 4.0eV,310nm)was used before the emission detector to remove scattered interference from the excitation beam and its higher harmonics.Emission was measured for excitation wavelengths between 6.2eV (200nm)and 2.7eV (460nm).Solid-state 1H MAS and 13C CP/MAS NMR spectra were collected at the California Institute of Technology solid-state NMR facility using a Bruker DSX500spectrometer at 500MHz.Hombikat UV100(Sachtleben)was chosen as a representative high surface area pure TiO 2previously used in photocatalysis.9,10,20(15)Wieser,C.;Dieleman,C.B.;Matt,D.Coord.Chem.Re V .1997,165,93-161;Floriani,C.;Floriani-Moro,R.Ad V .Organomet.Chem.2001,47,167-233.(16)Takeshita,M.;Shinkai,S.Bull.Chem.Soc.Jpn.1995,68,1088-1097.Danil de Namor,A.F.;Cleverley,R.M.;Zapata-Ormachea,M.L.Chem.Re V .1998,98,2495-2525.(17)Nishida,M.;Yoshida,I.;Sagada,F.;Ishii,D.;Shinkai,S.BunsekiKagaku 1994,43,295-301.(18)Dubberley,S.R.;Friedrich,A.;Willman,D.A.;Mountford,P.;Radius,U.Chem.Eur.J.2003,9,3634-3654.Cotton,F.A.;Dikarev,E.V.;Murillo,C.A.;Petrukhina,M.A.Inorg.Chim.Acta 2002,332,41-46;Radius,U.Inorg.Chem.2001,40,6637-6642.Clegg,W.;Else-good,M.R.J.;Teat,S.J.;Redshaw,C.;Gibson,V.C.J.Chem.Soc.,Dalton Trans.1998,18,3037-3039.Zanotti-Gerosa,A.;Solari,E.;Giannini,L.;Floriani,C.;Re,N.;Chiesi-Villa,A.;Rizzoli,C.Inorg.Chim.Acta 1998,270,298-311.Olmstead,M.M.;Sigel,G.;Hope,H.;Xu,X.;Power,P.P.J.Am.Chem.Soc.1985,107,8087-8091.(19)Friedrich,A.;Radius,U.Eur.J.Inorg.Chem.2004,4300-4316.(20)Dutta,P.K.;Ray,A.K.;Sharma,V.K.;Millero,F.J.J.ColloidInterface Sci.2004,278,270-275.Chen,D.;Ray,A.K.Chem.Eng.Sci.2001,56,1561-1570,Saquib,M.;Muneer,M.Dyes Pigm.2002,53,237-249.Davydov,L.;Smirniotis,P.G.J.Catal.2000,191,105-115.Vorontsov,A.V.;Savinov,E.V.;Davydov,L.;Smirniotis,P.G.Appl.Catal.B 2001,32,11-24.Colon,G.;Hidalgo,M.C.;Navio,J.A.J.Photochem.Photobiol.A 2001,138,79-85.Tahiri,H.;Serpone,N.;LevanMao,R.J.Photochem.Photobiol.A 1996,93,199-203.Lindner,M.;Bahnemann,D.W.;Hirthe,B.;Griebler,W.D.J.Solar Energy Eng.Trans.ASME 1997,119,120-125.Lindner,M.;Theurich,J.;Bahnemann,D.W.Water Sci.Technol.1997,35,79-86.Theurich,J.;Lindner,M.;Bahnemann,ngmuir 1996,12,6368-6376.Scheme 1.Grafting of Calixarenes onto TiO 2and SiO 2Supportsaa(i)Reflux suspension of TiO 2and calixarene in toluene under N 2,in the dark,and (ii)add 1equiv of TiOPr 4at ambient temperature under N 2for 48h.Calixarene-Sensitized Anatase Chem.Mater.,Vol.19,No.20,20074999This material is mesoporous(from N2physisorption data)with a BET21surface area of340m2g-1.The material is reported by the manufacturer to consist of12nm diameter primary crystallites of pure anatase embedded within50nm diameter primary particles. The surface titanol density was estimated using TGA to be∼6.5 OH nm-2assuming that mass loss between393and1073K arises from hydroxyl condensation.The TiO2was treated under dynamic vacuum at393K for4h before use.Calixarene1was purchased from Aldrich(95%).Calixarene2 was synthesized using methods described elsewhere.22Calixarene 3was synthesized via sulfonation and subsequent nitration23of de-tert-butylated1.24Calixarene4was synthesized via base-catalyzed condensation of tert-butyl phenol with elemental sulfur.25Calixarene 6was synthesized from1and iodomethane.26All characterization data for these calixarenes matched known literature values. Calixarene-sensitized TiO2materials1a and4a were synthesized by physically mixing TiO2and0.30mmol of the corresponding calixarene per g of TiO2(0.6calixarenes per nm2),suspending the mixture in toluene with magnetic stirring,and refluxing under N2 for48h.For all syntheses,toluene was dried and distilled from CaH2before use.The originally white suspension started to turn yellow after∼30min in reflux,indicative of the presence of CT complexes.The resulting materials1a and4a,light yellow to orange in color,were washed with boiling toluene and dried under dynamic vacuum for4h at ambient temperature.These materials were intentionally synthesized in the presence of excess calixarene to maximize surface densities.The amounts of ungrafted calixarene measured in the wash provided confirmatory estimates for the grafted calixarene surface density measured by TGA.Calixarenes 2and3were poorly soluble in toluene and indeed in most solvents. Therefore,materials2a and3a were prepared by limiting calix-arenes to∼0.12mmol per g of TiO2(∼0.2calixarene per nm2) during synthesis.These two materials exhibited final calixarene surface densities consistent with quantitative grafting.A portion of material3a was additionally washed with copious acetonitrile, methanol/NaOH(aqueous),water,0.1N HCl(aqueous),and water to form material3a-w.Material5a was synthesized using the same procedures but omitting the calixarene,as a control sample. Material6a was synthesized by first adding1equiv of Ti(O i-Pr)4(Aldrich99.999%)to a0.1M toluene solution of6and stirring under a N2atmosphere for48h at ambient temperature.This formed the previously described orange-red6p.19This solution of6p was added to TiO2(0.25mmol of6p per g of TiO2),refluxed24h in a N2atmosphere,and sparged to dryness with N2at388K.The solids were subsequently washed with excess boiling toluene anddried under dynamic vacuum at ambient temperature for4h. Material6b was synthesized via the same procedure as6a but by replacing TiO2with SiO2(0.6nm pore diameter,250-500µm particle diameter,partially dehydroxylated under dynamic vacuum at773K for24h,Selecto Scientific).After contact with calixarene, all TiO2materials were handled and stored in foil-wrapped vessels to protect them from light and avoid any photochemical transforma-tions.Materials were stored in sealed screw-top vials but otherwise exposed to ambient air during transfers.Results and DiscussionFigure1shows representative TGA data in air for Hombikat UV100and materials1a and5a.The surface-grafted calixarenes combust between500and700K. Calixarene-free5a has a similar TGA profile to Hombikat UV100,particularly when compared to the large mass loss for1a,indicating that the calixarene molecules,and not residual solvent or other impurities,are responsible for the observed mass loss in materials1a-4a.Table1shows calix-arene surface densities represented as mmol g-1of total material and as molecules nm-2of unmodified TiO2surface, measured from TGA and BET data and elemental composi-tions.27The calixarene surface densities determined from combustion methods for1a,4a,and6a were0.30,0.24,and 0.20nm-2.Extensive washing of1a with methanol and water decreased the mass loss upon combustion on TiO2samples by<25%;no change was detected after washing in aprotic(21)Brunauer,S.;Emmett,P.H.;Teller,E.J.Am.Chem.Soc.1938,60,309-319.(22)Gutsche,C.D.;Pagoria,.Chem.1985,50,5795-5802.(23)Shinkai,S.;Araki,K.;Tsubaki,T.;Arimura,T.;Manabe,O.J.Chem.Soc.,Perkin Trans.11987,2297-2299.(24)Rathore,R.;Abdelwahed,S.H.;Guzei,I.A.J.Am.Chem.Soc.2004,126,13582-13583.(25)Kumagai,H.;Hasegawa,M.;Miyanari,S.;Sugawa,Y.;Sato,Y.;Hori,T.;Ueda,S.;Kamiyama,H.;Miyano,S.Tetrahedron Lett.1997,38, 3971-3972.(26)Groenen,L.C.;Rue¨l,B.H.M.;Casnati,A.;Verboom,W.;Pochini,A.;Ungaro,R.;Reinhoudt,D.N.Tetrahedron1991,47,8379-8384.Figure1.Mass loss of Hombikat UV100,1a and5a relative to each material’s mass at473K(top curves),and differential mass loss for1a (bottom curve)showing combustion of grafted calixarenes at500-700K. There is no significant additional mass loss for material5a,which was exposed to synthesis conditions but without calixarene.Table1.Physical and Electronic Characterization ofCalixarene-Sensitized TiO2calixarenecontent aedge energy b(eV)materialmmolg-1calixnm-2TiO2LMCTLMCTintensity cPLintensity d HombikatUV10000 3.33n/a0.03 1.01a0.150.30 3.24 2.100.370.732a0.110.21 3.20 2.100.270.523a0.130.25e 2.27 3.520.363a-w0.040.08 3.27 2.130.384a0.130.24 3.27 2.200.210.775a0.02f0.04f 3.33n/a0.00 1.06a0.110.20 3.25 2.200.270.756b0.140.18n/a 2.220.12g n/a ga Based on C content and using the surface area of unmodified TiO2, 343m2g-1.Calculations based on TGA mass loss generally agree to within 10%.b(0.02eV.c At410nm(3.0eV),in KM units.d Ratio of the500 nm(2.5eV)emission intensity of target material to the500nm(2.5eV) emission intensity of Hombikat UV100at all excitation energies from5.8 to3.5eV.e Obscured by intense LMCT.f Expressed as an equivalent amount of calixarene1,for comparison purposes.g Diluted with10g/g SiO2;PL emission is weak and not strictly comparable to TiO2-based materials.5000Chem.Mater.,Vol.19,No.20,2007Notestein et al.organic solvents.This stability is consistent with covalent attachment of calixarenes to TiO2surfaces.N2physisorption isotherms at77K,pore volume distribu-tions,surface areas,and total pore volumes are reproduced in Figure S2for selected materials.Material5a has surface area and pore volume values within15%of those for the parent Hombikat UV100,confirming that synthesis protocols did not cause structural changes.In contrast,surface areas were reduced by1.5nm2and1.7nm2per calixarene for1a and6a,respectively,consistent with the cross-sectional area of calixarene1estimated from molecular models(1.5nm2) and with similar measurements performed previously for calixarenes on SiO2.28,29The slightly higher value for6a may reflect the concurrent grafting of calixarenes and isopro-poxide groups(detected by13C CP/MAS NMR spectroscopy) on TiO2surfaces.The decrease in TiO2pore volume upon grafting(1.35nm3per calixarene)for both materials agrees with the molecular volume for a calixarene(1.3nm3).This agreement between the dimensions of calixarene models and the sizes estimated from changes in N2absorption is consistent with deposition of isolated calixarenes without pore blocking or reconstruction of TiO2particles. Materials1a and6a were synthesized in the presence of an excess amount of calixarene.Measured∼0.25calixarene nm-2surface densities and a calixarene cross-sectional area of∼1.6nm2lead to the conclusion that TiO2surfaces are ∼40%covered by calixarenes.We have previously demon-strated similar grafting densities and fractional coverages fortert-butylcalixarenes on SiO2.28-30This fractional coverage is typical of random irreversible deposition of noninteracting molecules,31indicating that the grafting density is limited by the cross-sectional area of a calixarene.These surface coverages are more than10-fold smaller than the number of TiOH surface groups,indicating that calixarene surface densities are not limited by available surface hydroxyls. Materials6a and6b were formed from complex6p,19 which is locked into the‘cone’conformation illustrated in Scheme1.From the similar surface coverages attained for all tert-butylcalixarene materials1a,4a,6a,and6b,we conclude that all grafted calixarenes are in the same‘cone’conformation that is known to be present for6a and6b. Solid-state13C CP/MAS NMR spectra of1a and6a are shown in Figure2.They resemble solution13C spectra of grafting precursors132and6p19as well as the previously reported spectra for6b.29,33The solid-state13C CP/MAS NMR spectrum of2a,3a,and4a(Figure S3)also resemble their respective precursor spectra.Washing these materials with protic solvents causes no significant change in the position or intensity of calixarene resonances.The spectra of2a and3a show clear evidence for calixarene methylene bridges,confirming that macrocycles were grafted intact.As for calixarenes grafted on SiO228or resorcinarenes chemi-sorbed on TiO2,8the broad nature of this resonance indicates structural rigidity,consistent with covalent grafting of intact calixarenes in‘cone’conformations.Resonances A and B at24and71ppm for6a reflect grafted isopropoxide groups from precursor6p.34Weak resonances at∼161ppm(labeled 4′)arise from ipso carbons adjacent to phenol oxygens coordinated to Ti19,29and provide additional evidence for calixarene-TiO2connectivity in1a-4a,similar to the covalent bonds between calixarenes and Ti atoms in6a,6b, and precursor molecule6p.The solid-state1H MAS NMR spectra of all materials(Figure S4)are dominated by a broad signal at∼6ppm arising from hydrated TiOH surfaces.This signal increased with time of exposure to ambient air after drying;thus,TiO2surfaces remain hydrophilic after grafting of hydrophobic calixarenes,as has been previously shown in the case of SiO2supports.28The diffuse reflectance UV-visible absorption spectra of the pure TiO2precursor and of materials1a,5a,6a,and6b are shown in Figure3.The spectra for other upper rim substituted materials are included in Figure S5.The Kubelka-(27)For calculating the calixarene content from the TGA,it is assumedthat the weight loss between473K and873K corresponds to loss ofa calixarene fragment missing three of the phenolic OH ingthis molecular fragment as a basis previously gives a good agreement between carbon contents by combustion analysis and TGA.For TGA and C agreement on material4a,it is additionally assumed that the S atoms are ultimately deposited onto the TiO2surface and thus do not contribute to the TGA mass loss.(28)Notestein,J.M.;Katz,A.;Iglesia,ngmuir2006,22,4004-4014.(29)Notestein,J.M.;Iglesia,E.;Katz,A.J.Am.Chem.Soc.2004,126,16478-16486.(30)Katz,A.;Da Costa,P.;Lam,A.C.P.;Notestein,J.M.Chem.Mater.2002,14,3364-3368.(31)Fadeev,A.Y.;Lisichkin,G.V.Stud.Surf.Sci.Catal.1996,99,191-212.(32)Gutsche,C.D.;Dhawan,B.;No,K.H.;Muthukrishnan,R.J.Am.Chem.Soc.1981,103,3782-2792.(33)Notestein,J.M.;Andrini,L.R.;Kalchenko,V.I.;Requejo,F.G.;Katz,A.;Iglesia,E.J.Am.Chem.Soc.2007,129,1122-1131. (34)Bouh,A.O.;Rice,G.L.;Scott,S.L.J.Am.Chem.Soc.1999,121,7201-7210.Figure2.Solid-state13C CP/MAS NMR spectra of samples1a and6a. Resonances are labeled to correspond to structure6a in Scheme1.(*) indicates spinning sideband(13ppm,6a)or unidentified species arising from synthesis that is washed off by H2O/MeOH(78ppm).Resonances A and B at24and71ppm indicate the presence of isopropyl groups cografted onto the TiO2surface.Resonances corresponding to methylene bridges are obscured by the intense signals from resonances1and2.Other resonances correspond to published solid-state spectra of other grafted calixarene-Ti materials29,33and to the published solution spectra of132and6p.19In particular,resonance4′indicates a covalent calixarene-Ti complex,which occurs at the same shift(161ppm,dashed line)for materials synthesized directly(1a)and from a precursor approach(6a).Calixarene-Sensitized Anatase Chem.Mater.,Vol.19,No.20,20075001Munk formalism was used for all powder samples in these figures.35The lowest energy transitions corresponding to the band gap of anatase TiO 2particles are indirect transitions.36,37In the calixarene -TiO 2materials,we use the same formalism to empirically describe the absorption edge energies char-acteristic of LMCT transitions lower in energy than the band gap.Material 3a absorbs more intensely in the visible than the other calixarene materials,which prevents an accurate determination of absorption edge for the TiO 2particle.The energies of the TiO 2band gap and the LMCT band are therefore measured using the absorption spectrum of alkaline-washed 3a-w with a lower calixarene surface density (∼0.08nm -2).The final aqueous HCl wash for this material ensured that no yellow calixarene anions 38were present and that all color arose from LMCT requiring calixarene -Ti connectiv-ity.All TiO 2-based materials show an absorption edge at 3.28(0.05eV (∼375nm),previously attributed to the indirect transitions in the band gap of anatase TiO 2nanoparticles.36Absorption beyond the inflection point at 4.7eV (∼265nm)not only appears to reflect the direct transitions above the band gap in anatase TiO 236but also may arise from defects on the surface or bulk of TiO 2particles,such as TiOH or undercoordinated Ti 4+species also found as isolated Ti atoms within SiO 2frameworks.39Control material 5a gave no absorption features in the visible region and a band gap identical to that in pure TiO 2(Hombikat UV100).All synthesis and wash solutions containing residual calixarenegave no absorption features in the visible region (Figure S1).These findings indicate that visible light sensitization in calixarene-containing materials is caused by interactions between calixarenes and surface Ti atoms and not by either of the individual components or by possible artifacts of synthesis conditions,such as the creation of vacancy or substitutional defects in the TiO 2framework.3,4All calixarene-containing materials give an additional absorption edge in the visible region at 2.15(0.05eV (∼560nm),previously attributed to calixarene -Ti LMCT in soluble calixarene -Ti complexes 17and in material 6b .29This LMCT band is mediated by at least one covalent bond between a calixarene and a surface Ti atom.This band,however,does not distinguish Ti atoms within the TiO 2framework in 1a from those grafted onto TiO 2surfaces in 6a or onto SiO 2in 6b .This band is absent in calixarenes grafted directly onto SiO 2,28,30which exhibit no visible absorption,thus confirming that interactions between calix-arene and vacant d orbitals on Ti are required for the transitions responsible for these spectral features.For all materials,LMCT energies were insensitive to the identity of the R 1substituent on the calixarene upper rim (tBu,Br,NO 2).Materials 1a ,2a ,and 4a also gave similar LMCT band intensities (Figure S5).Previous studies have shown that substituents on phenols coordinated to d 0Ti 4+atoms do not influence frontier orbitals in Ti centers or their redox potentials,40UV -visible spectra,or alkene epoxidation turnover rates,all of which depend on frontier orbital energies at Ti centers.41As in previous studies of catechol adsorption on TiO 2,42the known geometries of calixarene -Ti complex 6p ,and of materials 6a and 6b derived from it,provide opportunities to probe the details of calixarene -TiO 2connectivity in directly synthesized material 1a .In soluble calixarene -Ti complexes such as 6p ,the Ti atom is coordinated simulta-neously to three calixarene oxygen atoms each at a distance of ∼0.18nm (from single-crystal X-ray diffraction 19),and Ti atoms are four-coordinate in material 6b (as depicted in Scheme 1and determined from Ti K-edge X-ray absorption near edge spectroscopy 33).The similar UV -visible absorp-tion intensities and grafting densities in 1a ,2a ,4a ,6a ,and 6b require that the absorbing calixarene surface complexes in each of these materials possess similar absorption cross sections.These similarities imply that all materials form multidentate covalent complexes between calixarene and Ti with a geometry as described above,irrespective of whether the complex forms in solution before grafting (6a and 6b )or upon grafting onto TiO 2surfaces (1a ).Such a coordination mode for materials 1a -4a requires corner and edge sites on(35)Delgass,W.N.;Haller,G.L.;Kellerman,R.;Lunsford,J.H.Spectroscopy in Heterogeneous Catalysis ;Academic Press:New York 1979.(36)Serpone,N.;Lawless,D.;Khairutdinov,R.J.Phys.Chem.1995,99,16646-16654.Kumar,P.M.;Badrinarayanan,S.;Sastry,M.Thin Solid Films 2000,358,122-130.(37)Daude,N.;Gout,C.;Jouanin,C.Phys.Re V .B 1977,15,3229.(38)Shinkai,S.;Araki,K.;Koreishi,H.;Tsubaki,T.;Manabe,O.Chem.Lett.1986,1351-1354.(39)Anpo,M.;Yamashita,H.;Ichihashi,Y.;Fujii,Y.;Honda,M.J.Phys.Chem.B 1997,101,2632-2636.Marchese,L.;Maschmeyer,T.;Gianotti,E.;Coluccia,S.;Thomas,J.M.J.Phys.Chem.B 1997,101,8836-8838.Corma,A.;Crocker,M.;Garcı´a,H.;Palomares,E.ChemPhysChem 2000,2,93-97.Soult,A.S.;Carter,D.F.;Schreiber,H.D.;van de Burgt,L.J.;Stiegman,A.E.J.Phys.Chem.B 2002,106,9266-9273.(40)Fussing,I.M.M.;Pletcher,D.;Whitby,anomet.Chem.1994,470,109-117.(41)Notestein,J.M.Ph.D.Thesis,University of California at Berkeley,2006.(42)Wang,Y.H.;Hang,K.;Anderson,N.A.;Lian,T.Q.J.Phys.Chem.B 2003,107,9434-9440.Figure 3.Diffuse reflectance UV -visible absorption of Hombikat UV100(s ),1a (s ),5a (---),6a (s s ),and 6b (s ),assuming materials are indirect semiconductors.F(R)is the pseudoabsorbance calculated using the Kubelka -Munk formalism.Calixarene-containing materials share similar LMCT edge energies of 2.10-2.22eV.Materials 1a and 6a also share similar visible absorption intensities consistent with similar calixarene -Ti surface complexes in both cases.Material 5a is essentially indistinguishable from Hombikat UV100indicating no changes to the particle during synthesis in the absence of calixarene.5002Chem.Mater.,Vol.19,No.20,2007Notestein et al.。
护理学杂志审稿流程
护理学杂志审稿流程英文回答:Nursing Journal Peer-Review Process.The peer-review process is an essential step in the publication of academic research in nursing. It involves the evaluation of a manuscript by experts in the field to ensure its quality, rigor, and relevance. The process typically involves the following steps:1. Submission: The author submits the manuscript to the journal for consideration.2. Initial Screening: The journal editor reviews the manuscript to determine if it aligns with the journal's scope and meets the basic criteria for submission.3. Peer Review: The manuscript is sent to two or more independent reviewers with expertise in the manuscript'stopic. The reviewers provide written evaluations of the manuscript, assessing its strengths and weaknesses.4. Editor's Decision: The editor considers the reviewers' evaluations and makes a decision on whether to accept, reject, or request revisions to the manuscript.5. Revision: If revisions are requested, the author must address the reviewers' comments and resubmit the revised manuscript.6. Final Acceptance: Once the revised manuscript addresses all the reviewers' concerns, the editor grants final acceptance for publication.Benefits of Peer Review:Ensures Quality: Peer review helps to ensure the quality of published research by identifying and correcting errors and weaknesses in the manuscript.Promotes Rigor: The process encourages authors toconduct rigorous research and present their findings in a clear and concise manner.Enhances Validity: Peer review contributes to the validity of research by providing independent assessmentsof the manuscript's credibility and significance.Facilitates Knowledge Dissemination: By selectinghigh-quality research for publication, peer review helps to disseminate valuable knowledge to the nursing professionand beyond.Challenges of Peer Review:Bias: Reviewers may be biased due to personal opinions, competing interests, or academic rivalry.Time Constraints: The peer-review process can be time-consuming, which may delay publication.Inconsistency: The quality of peer review can vary,and different reviewers may have different perspectives onthe manuscript's merits.Subjectivity: The evaluation of a manuscript is ultimately subjective, and reviewers may disagree on its strengths and weaknesses.中文回答:护理学期刊审稿流程。
with editors for consideration
with editors for considerationEditors are indispensable in the world of publishing. Their role is crucial as they are responsible for polishing and refining manuscripts, ensuring the final product is of high quality and meets the intended purpose. With their keen eye for detail, extensive knowledge of grammar and style, and understanding of the target audience, editors play a pivotal role in the success of any written work.One of the key functions of an editor is to review the content for clarity and coherence. They carefully examine each sentence and paragraph, ensuring that ideas flow logically and smoothly. Editors take into account the target audience and make adjustments accordingly to ensure the information is conveyed effectively. They check for factual accuracy and eliminate any inconsistencies or contradictions that might confuse readers. By doing so, editors ensure that readers can easily comprehend and engage with the material.Another vital aspect of editing is language proficiency. Editors possess an in-depth knowledge of grammar, punctuation, and style conventions. They meticulously comb through a manuscript, identifying and rectifying any grammatical errors, such as incorrect verb tense, subject-verb agreement, or misplaced modifiers. Editors are also adept at refining the language to achieve a more polished and professional tone. They suggest improvements to sentence structure, word choice, and overall clarity, elevating the quality of the writing and making it more enjoyable to read. Moreover, editors are responsible for maintaining consistencythroughout a piece of writing. They pay careful attention to details, such as names, dates, and terminology, to ensure accuracy and prevent any discrepancies. Editors use style guides and formatting guidelines to keep the writing consistent, providing a sense of cohesiveness and professionalism. They also verify that all reference materials, citations, and sources are properly documented and adhering to the relevant citation style to maintain the integrity of the work.Additionally, editors are skilled at fact-checking and conducting research. They verify the accuracy of statements, claims, and statistics presented in a manuscript. Editors might consult external sources, cross-reference information, and ensure that the content is reliable and trustworthy. By conducting thorough research, they contribute to the credibility and authenticity of the work, ultimately enhancing its value and authority.Editors also offer valuable feedback and suggestions for improvement. They provide constructive criticism, highlighting areas that require further development or clarification. Editors offer fresh perspectives, prompting authors to think critically and refine their ideas. Their objective evaluation and insightful suggestions help authors to enhance their writing skills and produce a more compelling and effective piece of work.In conclusion, editors are essential in the publishing process. Through their meticulous attention to detail, language proficiency, commitment to consistency, fact-checking abilities, and constructive feedback, editors play a pivotal role in refining and enhancing written material. Their expertise ensures thatmanuscripts are clear, coherent, accurate, and engaging, ultimately contributing to the success of the final product.。
钙钛矿
CommunicationsAmbient-Pressure Synthesis of SHG-Active Eu 2Ti 2O 7with a [110]Layered PerovskiteStructure:Suppressing Pyrochlore Formation by Oxidation of Perovskite-Type EuTiO 3Nathaniel L.Henderson,†Jaewook Baek,‡P.Shiv Halasyamani,*,‡and Raymond E.Schaak*,†Department of Chemistry,Texas A&M Un V iersity,College Station,Texas 77842,and Department of Chemistry,Uni V ersity of Houston,Houston,Texas 77204Recei V ed December 11,2006Re V ised Manuscript Recei V ed February 23,2007Layered perovskites of formula A 2B 2O 7(A )alkaline earth or rare earth metal;B )transition metal),which are derived from the AB O 3perovskite structure by separating layers of corner-sharing B O 6octahedra along the [110]plane,1are important materials with a range of useful physical properties,including ferroelectricity,2second harmonic generation (SHG),3and photocatalytic activity for water splitting.4,5Common examples of [110]layered perovskites include La 2Ti 2O 7,Sr 2Nb 2O 7,and Ca 2Nb 2O 7.6-8An alterative A 2B 2O 7structure is pyrochlore,which tends to be stabilized by smaller A -sitecations.9For example,La 2Ti 2O 7and Nd 2Ti 2O 7are [110]layered perovskites,whereas Sm 2Ti 2O 7,Eu 2Ti 2O 7,Lu 2Ti 2O 7,and Y 2Ti 2O 7are pyrochlores.For the smaller rare earth titanates such as Eu 2Ti 2O 7,the pyrochlore structure domi-nates.9Accordingly,the [110]layered perovskite modifica-tion of Eu 2Ti 2O 7has been accessed only using high-pressure (>3GPa)techniques.10,11Here,we report a new low-temperature ambient-pressure strategy for synthesizing gram-scale quantities of the high-pressure [110]layered perovskite modification of Eu 2Ti 2O 7.The synthetic process is highlighted in Figure 1a.The approach utilizes EuTiO 3,a well-known simple cubic per-ovskite,12as a structural solid-state precursor.Upon heating in air or O 2,the Eu 2+in EuTiO 3oxidizes to Eu 3+and oxygen intercalates into the structure.The product,Eu 2Ti 2O 7,retains the perovskite motif defined by the EuTiO 3precursor and allows the [110]layered perovskite polymorph of Eu 2Ti 2O 7to crystallize before the more stable pyrochlore structure forms.Thus,by utilizing EuTiO 3as a precursor,the formation of pyrochlore-type Eu 2Ti 2O 7is suppressed,provid-ing a narrow temperature window in which the [110]layered perovskite structure is stable at ambient pressure.The EuTiO 3precursor was synthesized by heating stoi-chiometric amounts of Eu 2O 3and TiO 2for 24h at 1000°C under flowing H 2/Ar (5%/95%).(EuTiO 3can also be synthesized by reducing pyrochlore-type Eu 2Ti 2O 7in H 2/Ar*To whom correspondence should be addressed.E-mail:psh@ (P.S.H.);schaak@ (R.E.S.).†Texas A&M University.‡University of Houston.(1)Lichtenberg,F.;Herrnberger,A.;Wiedenmann,K.;Mannhart,J.Prog.Solid State Chem.2001,29,1.(2)Sandstrom,M.M.;Fuierer,P.J.Mater.Res.2003,18,357.(3)Zakharov,N.A.;Krikorov,V.S.;Kustov,E.F.;Stefanovich,S.Y.Phys.Status Solidi 1978,50,K13.(4)Kim,J.;Hwang,D.W.;Kim,H.-G.;Bae,S.M.;Ji,S.M.;Lee,J.S.mun.2002,2488.(5)Hwang,D.W.;Lee,J.S.;Li,W.;Oh,S.H.J.Phys.Chem.B 2003,107,4963.(6)Gasperin,P.M.Acta Crystallogr.,Sect.B 1975,31,2129.(7)Schmalle,H.W.;Williams,T.;Reller,A.;Linden,A.;Bednorz,J.G.Acta Crystallogr.,Sect.B 1993,49,235.(8)Ishizawa,N.;Marumo,F.;Iwai,S.;Kimura,M.;Kawamura,T.ActaCrystallogr.,Sect.B 1980,36,763.(9)Subramanian,M.A.;Aravamudan,G.;Subba Rao,G.V.Prog.SolidState Chem.1983,15,55.(10)Bondarenko,T.N.;Uvarov,V.N.;Borisenko,S.V.;Teterin,Y.A.;Dzeganovski,V.P.;Sych,A.M.;Titiv,Y.A.J.Korean Phys.Soc.1998,32,S65.(11)Sych,A.M.;Stefanovich,S.Y.;Titov,Y.A.;Bondarenko,T.N.;Mel’nik,V.M.Inorg.Mater.1991,27,2229.(12)McCarthy,G.J.;White,W.B.;Roy,R.Mater.Res.Bull.1969,4,251.VOLUME 19,NUMBER 8APRIL 17,2007©Copyright 2007by the American Chemical Society10.1021/cm062934d CCC:$37.00©2007American Chemical SocietyPublished on Web 03/17/2007at 1000°C.)The X-ray diffraction (XRD)pattern for the black EuTiO 3powder (Figure 1b)matches that expected for the simple perovskite.When EuTiO 3is heated in air,it initially forms an amorphous perovskite-related intermediate (Figure 1b)that is present between 475and 650°C.At 750°C,the [110]layered perovskite polymorph of Eu 2Ti 2O 7begins to crystallize,and it is stable up to 800°C.By 900°C,impurities of pyrochlore-type Eu 2Ti 2O 7are evident by XRD,and the sample converts entirely to the pyrochlore polymorph above 1000°C (Figure 1b).In a typical large-scale synthesis of phase-pure perovskite-type Eu 2Ti 2O 7,a 2g batch of EuTiO 3is heated to 800°C in air for 15h (Figure 1b).The XRD pattern for Eu 2Ti 2O 7synthesized by oxidation of EuTiO 3matches that of La 2Ti 2O 7,which suggests that the two compounds are 2Ti 2O 7crystallizes in the monoclinic space group P 21at room temperature.6However,La 2Ti 2O 7can also adopt an orthorhombic (Pna 21)modification through twinning and stacking of two mono-clinic cells.7The differences between these two structures,and therefore the differences in their powder XRD patterns,are subtle.On the basis of a few weak reflections in the powder XRD data (see the Supporting Information)and by analogy to the room-temperature structure of La 2Ti 2O 7,we propose that perovskite-type Eu 2Ti 2O 7also adopts the P 21monoclinic structure of La 2Ti 2O 7.However,the broad peaks observed in the powder XRD pattern of perovskite-type Eu 2Ti 2O 7(likely the result of limited crystallinity because of the relatively low temperatures necessary to access it),as well as a non-negligible background (likely originating from some residual amorphous intermediate),make structure refinement difficult (see the Supporting Information).As-suming a monoclinic structure analogous to that of La 2Ti 2O 7,the refined unit-cell parameters for perovskite-type Eu 2Ti 2O 7are a )7.54(1)Å,b )5.391(8)Å,c )12.91(3)Å,and )98.3(9)°.The unit-cell volume of monoclinic Eu 2Ti 2O 7is 520.0Å3,which is smaller than that of monoclinic La 2Ti 2O 7(557.0Å3),7as expected.The good agreement between the observed XRD data for perovskite-type Eu 2Ti 2O 7and the simulated data using the structure of monoclinic La 2Ti 2O 7as a model (Figure 2)is consistent with this proposed structural assignment.(See the Supporting Information for a more detailed comparison between the simulated and experimental XRD data.)Because perovskite-type La 2Ti 2O 7is known to be ferro-electric and SHG-active,3we measured these properties for perovskite-type Eu 2Ti 2O 7synthesized by oxidizing EuTiO 3at 800°C for 15h.Powder SHG measurements on poly-crystalline Eu 2Ti 2O 7were performed on a modified Kurtz -NLO system using 1064nm radiation.13A detailed descrip-tion of the equipment and the methodology used has been published.14,15No index-matching fluid was used in any of the experiments.Powders with particle sizes of 45-63µm were used for comparing SHG intensities.Ferroelectric measurements were performed on pressed sintered pellets 1/2in.in diameter and ∼1mm thick.A detailed description(13)Kurtz,S.K.;Perry,T.T.J.Appl.Phys.1968,39,3798-3813.(14)Ok,K.M.;Bhuvanesh,N.S.P.;Halasyamani,P.S.Inorg.Chem.2001,40,1978-1980.(15)Porter,Y.;Ok,K.M.;Bhuvanesh,N.S.P.;Halasyamani,P.S.Chem.Mater.2001,13,1910-1915.Figure 1.(a)Overview of the ambient-pressure synthetic pathway used to access Eu 2Ti 2O 7with a [110]layered perovskite structure.The simple perovskite EuTiO 3is thermally oxidized to form perovskite-type Eu 2Ti 2O 7,which then transforms to pyrochlore-type Eu 2Ti 2O 7with continued heating.The light blue polyhedra represent TiO 6octahedra,and the pink spheres represent Eu cations.In the pyrochlore structure,oxygen atoms that are not part of the TiO 6octahedra are shown as green spheres.(b)Powder XRD data for the EuTiO 3precursor,the amorphous perovskite-related intermediate (500and 650°C),the crystallization of perovskite-type Eu 2Ti 2O 7(750,800,and 900°C),and the stable Eu 2Ti 2O 7pyrochlore phase that forms at higher temperatures.The pattern highlighted in red (800°C)is phase-pure perovskite-type Eu 2Ti 2O 7(as determined by laboratory XRD).The asterisks in the 900°C XRD pattern show the presence of some pyrochlore-type Eu 2Ti 2O 7.Figure 2.Observed and simulated diffraction patterns for Eu 2Ti 2O 7with a [110]layered perovskite structure.The simulated XRD pattern was calculated using atomic coordinates for monoclinic La 2Ti 2O 7(ref 6)and refined lattice constants for Eu 2Ti 2O 7.1884Chem.Mater.,Vol.19,No.8,2007Communicationsof the instrument and technique has been published.16Eu 2Ti 2O 7is not ferroelectric -no hysteresis loop was observed (see the Supporting Information).The small “gap”in the polarization vs voltage curve may be attributed to “leakage”in the material.The powder SHG measurements indicate that perovskite-type Eu 2Ti 2O 7exhibits an SHG efficiency of approximately 80×R -SiO 2(Figure 3),placing the material in Class B as defined by Kurtz and Perry.13The efficiency results in a <d eff >of approximately 10.3pm/V.Phase-matching experi-ments,i.e.,particle size vs SHG efficiency,indicate the material is Type 1phase-matchable.The magnitude of the SHG efficiency is dependent on both the magnitude and direction of the intra-octahedral distortion of the Ti 4+cations.Each Ti 4+cation is displaced from the center of its oxide octahedron,resulting in a local dipole moment,attributable to second-order Jahn -Teller effects.17-23To better quantify the magnitude and direction of these displacements,we used the SHAPE program.24The Ti 4+cations are displaced from the center of their oxide octahedron by 0.0392Å2for Ti(1);0.0492Å2,Ti(2);0.0674Å2,Ti(3);and 0.0752Å2;Ti(4)(see the Supporting Information).These magnitudes are well within the range reported earlier for oxides with octahedrally coordinated Ti 4+cations.25With respect to the direction ofthe distortion,all of the Ti 4+cations are displaced toward a vertex (Ti(1)is slightly displaced off-vertex).Although the direction of the local displacements is similar,the distortions do not fully “constructively add”.Each Ti 4+cation displaces locally toward a vertex along the crystallographic [101]and [1h 01]directions,resulting in a net moment along the [100]direction.Thus,there is some cancellation of the dipole moments.It is this cancellation that is thought to reduce the SHG efficiency.Despite this,layered perovskite-type Eu 2Ti 2O 7shows a remarkable (8-fold)increase in SHG conversion efficiency relative to the lanthanum-containing analog,which possesses a conversion efficiency of 10×R -SiO 2.3Interestingly,we find that Eu 2Ti 2O 7synthesized by thermal oxidation of EuTiO 3has an increased optical response relative to per-ovskite-type Eu 2Ti 2O 7synthesized at high pressures,which was reported to have a conversion efficiency of roughly one-fourth that of La 2Ti 2O 7.11This difference is likely attributable to details in the SHG measurements.Previous studies reported SHG measurements on ∼2µm particles.11Because SHG intensities decrease dramatically with decreasing particle sizes (see Figure 3,for example),the higher optical response that we observe is likely a result of better optimized SHG measurements for larger particle sizes.In summary,we have succeeded in synthesizing gram-scale quantities of the SHG-active [110]layered perovskite polymorph of Eu 2Ti 2O 7,which was previously only acces-sible using high-pressure techniques.The use of EuTiO 3as a structural precursor likely facilitates the stabilization of the perovskite polymorph at ambient pressure and at tem-peratures lower than the pyrochlore structure forms.This synthetic strategy may turn out to be applicable to other Eu-containing d 0oxides,possibly facilitating the formation of several other [110]perovskite phases that normally crystallize in the pyrochlore structure.Also,given the significant interest in La 2Ti 2O 7for optical,3electronic,2and photocatalytic applications,4,5perovskite-type Eu 2Ti 2O 7and related phases may also be prudent targets for further study.Acknowledgment.The work at Texas A&M was supported by the U.S.Department of Energy (DE-FG02-06ER46333),the Robert A.Welch Foundation (Grant A-1583),and the Texas Advanced Research Program (Grant 010366-0002-2006).R.E.S.also acknowledges support from the Arnold and Mabel Beckman Foundation (Young Investigator Award)and DuPont (Young Professor Grant).We acknowledge Nattamai Bhuvanesh for his assistance with structure refinement.J.B.and P.S.H.thank the Robert A.Welch Foundation,the NSF-Career Program (DMR-0092054),and the NSF -Chemical Bonding Center (KK5110)for support.We also acknowledge David Casanova Cases (Uni-versity of Barcelona)for assistance with the SHAPE program.Supporting Information Available:Synthesis and character-ization details for perovskite-type Eu 2Ti 2O 7.This material is available free of charge via the Internet at .CM062934D(16)Ok,K.M.;Chi,E.O.;Halasyamani,P.S.Chem.Soc.Re V .2006,35,710.(17)Opik,U.;Pryce,M.H.L.Proc.R.Soc.(London )1957,A238,425-447.(18)Bader,R.F.W.Mol.Phys.1960,3,137-151.(19)Bader,R.F.W.Can.J.Chem.1962,40,1164-1175.(20)Pearson,R.G.J.Am.Chem.Soc.1969,91,4947-4955.(21)Pearson,R.G.J.Mol.Struct.(Theochem )1983,103,25-34.(22)Wheeler,R.A.;Whangbo,M.-H.;Hughbanks,T.;Hoffmann,R.;Burdett,J.K.;Albright,T.A.J.Am.Chem.Soc.1986,108,2222-2236.(23)Kunz,M.;Brown,I.D.J.Solid State Chem.1995,115,395-406.(24)Llunell,M.;Casanova,D.;Cirera,J.;Bofill,J.M.;Alemany,P.;Alvarez,S.;Pinsky,M.;Avnir,D.SHAPE ,1.1b ed.;University of Barcelona:Barcelona,Spain,2004.(25)Ok,K.M.;Halasyamani,P.S.;Casanova,D.;Llunell,M.;Alemany,P.;Alvarez,S.Chem.Mater.2006,18,3176.Figure 3.SHG efficiencies for various particle sizes of perovskite-type Eu 2Ti 2O 7,which is type 1phase-matchable with an efficiency of 80×R -SiO 2.The curve is drawn as a guide to the eye rather than as a fit to the data.Communications Chem.Mater.,Vol.19,No.8,20071885。
elsevier co-authorship of submission to -回复
elsevier co-authorship of submission to -回复Elsevier is a well-known publishing company that specializes in peer-reviewed scientific journals and books. It offers a platform for scientists and researchers to publish their work and contribute to the advancement of knowledge in various fields. Coauthorship, the practice of having multiple authors collaborate and contribute to a single publication, is common in academic research. In this article, we will discuss the process of submitting a coauthored paper to Elsevier and the steps involved in coauthorship.Step 1: Collaboration and ResearchThe first step in the coauthorship process is collaboration on a research project. Researchers often work together on projects that require diverse expertise and perspectives. Whether it's a laboratory experiment, a field study, or a theoretical exploration, the collaboration begins with a shared research interest and a common goal. The collaborative effort may involve researchers from different institutions, disciplines, or even countries, each contributing their unique skills and knowledge.Step 2: Data Collection and AnalysisOnce the research project is defined, the next step involves data collection and analysis. Depending on the nature of the study, this could involve experiments, surveys, interviews, data mining, or literature review. Each coauthor may have specific responsibilities within the research process, such as conducting experiments, analyzing data, or writing the manuscript. Clear communication and division of work are crucial to ensure efficient progress and equitable contribution.Step 3: Manuscript PreparationAfter the data has been collected and analyzed, the next step is to prepare the manuscript for submission to Elsevier. The manuscript is a formal document that presents the research findings in a structured and organized manner. It typically consists of an introduction, methodology, results, discussion, and conclusion sections. Each section is carefully written to convey the purpose, methods, findings, and implications of the study.Step 4: Authorship and ContributionsDetermining authorship and assigning credit appropriately is a critical aspect of coauthorship. The International Committee of Medical Journal Editors (ICMJE) provides guidelines for authorship criteria. According to these guidelines, an author should have made substantial contributions to the conception, design, data analysis, interpretation, and drafting of the article. All coauthors should have participated in the revision and approval of the final version. It is essential to establish clear criteria for authorship and discuss and resolve any disagreements or concerns among the coauthors before submission.Step 5: Selecting an Elsevier JournalOnce the manuscript is ready, the next step is to select an appropriate Elsevier journal for submission. Elsevier publishes more than 2,500 journals covering a wide range of disciplines. Authors should consider the fit between their research topic and the scope of the journal. The selected journal should be aligned with the focus of the research, ensuring that it reaches the intended audience and maximizes its impact.Step 6: Manuscript SubmissionAfter selecting the journal, authors can submit their manuscript to Elsevier through the online manuscript submission system. The system requires the authors to provide details such as manuscript title, abstract, keywords, and the coauthors' information. It may also request information on funding sources, conflicts of interest, and ethical considerations. Authors need to carefully follow the submission guidelines provided by the journal to ensure a smooth submission process.Step 7: Peer Review and RevisionOnce the manuscript is submitted, it goes through a peer-review process. Peer review involves evaluation of the manuscript by experts in the respective field to assess its quality, originality, and suitability for publication. The reviewers provide constructive feedback and recommendations for improvement. Based on the feedback received, authors may need to revise and resubmit the manuscript multiple times before it is accepted for publication.Step 8: Acceptance and PublicationFinally, after addressing the reviewers' comments and making necessary revisions, the manuscript is accepted for publication. The authors are notified of the acceptance, and the manuscript goes through the production process, which includes formatting, proofreading, and typesetting. Once the article is finalized, it is published online on Elsevier's platform and becomes accessible to the scientific community.In conclusion, coauthorship of a submission to Elsevier involves collaboration, research, manuscript preparation, authorship determination, journal selection, manuscript submission, peer review, revision, and publication. It is a complex and iterative process that requires effective communication, teamwork, and adherence to ethical standards. By following these steps, researchers can contribute to the body of knowledge in their respective fields and advance scientific understanding.。
英文期刊发表论著要求
英文期刊发表论著要求As an author aspiring to have your work published in an English academic journal, there are several important requirements and considerations to keep in mind. In this document, we will outline the key elements and steps necessary for successfully submitting your research for publication in an English-language journal.First and foremost, it is crucial to ensure that your research is original, innovative, and contributes significantly to the existing body of knowledge in your field. English academic journals typically prioritize articles that present novel findings, offer new perspectives, or address important gaps in current understanding. Therefore, before submitting your work, it is essential to conduct a thorough literature review to situate your research within the broader scholarly conversation and to highlight its unique contributions.In addition to originality, clarity and coherence are also essential qualities of a successful journal article. Your writing should be clear, concise, and logically organized to effectively communicate your research findings and arguments to the journal's readership. This includes using precise and appropriate language, structuring your article in a logical and easy-to-follow manner, and ensuring that your arguments are well-supported by evidence and reasoning.Moreover, it is important to consider the specific requirements and guidelines of the journal to which you are submitting. Different journals may have varying formatting, citation, and length requirements, so it is crucial to carefully review and adhere to these guidelines to ensure that your submission meets the journal's standards.Furthermore, when preparing your manuscript, it is essential to pay close attention to the technical aspects of writing, such as grammar, spelling, and punctuation. A well-written and error-free manuscript demonstrates professionalism and attention to detail, which can enhance the credibility and impact of your research.Finally, it is important to be prepared for the peer review process, which is a standard procedure for evaluating the quality and validity of research before publication. Peer reviewers will provide feedback and critique on your work, and it is essential to approach this process with an open mind, using constructive criticism to strengthen and improve your manuscript.In conclusion, publishing in an English academic journal requires careful attention to originality, clarity, coherence, adherence to journal guidelines, and meticulous writing. By following these guidelines and considerations, you can increase the likelihood of successfully publishing your research in an English-language journal and contributing to the advancement of knowledge in your field.。
tnnls 审稿意见 reject and resubmit
tnnls 审稿意见reject and resubmit中括号内的内容是"tnnls审稿意见reject and resubmit"。
基于该主题,以下是一篇针对中括号内指示的1500-2000字文章。
Title: Dealing with Tnnls Reviewer's "Reject and Resubmit" Decision: A Step-by-Step ApproachIntroduction:Receiving a "Reject and Resubmit" decision from a journal such as Tnnls can be disheartening for researchers. However, instead of being discouraged, it is important to understand that this decision signifies an opportunity for improvement. In this article, we will provide a step-by-step approach on how to address the Tnnls reviewer's feedback, revise your manuscript, and successfully resubmit for reconsideration.Step 1: Understanding the Reviewer's FeedbackThe first step is to carefully read and understand the reviewer's comments and suggestions. Take note of their specific concerns, including any deficiencies or weaknesses identified in your manuscript. This understanding will serve as a foundation for your revision process.Step 2: Evaluate the Relevance of the FeedbackOnce you have understood the feedback, it is essential to evaluate its relevance. Ask yourself whether the reviewer's comments are valid and address important aspects of your research. If the feedback is constructive and aligns with your initial goals, incorporating these suggestions will likely enhance the quality of your manuscript.Step 3: Develop a Revision PlanBased on the feedback, create a revision plan that outlines the specific changes you need to make. Organize the plan by sections or themes, ensuring that each concern raised by the reviewer is addressed. Developing a clear roadmap will help you stay organized and focused during the revision process.Step 4: Revise Methodically and ThoughtfullyAs you revise your manuscript, keep in mind that each change should be made thoughtfully and methodically. Pay attention to the clarity of your arguments, the structure of your work, and the accuracy of your data. Make sure to revise sections where the reviewer believed improvement was necessary, while alsoconsidering potential changes to improve the paper as a whole.Step 5: Seek Assistance if NeededIf you encounter any challenges or areas where you feel unsure, seek assistance. Reach out to colleagues, mentors, or professional editors who can provide guidance and support. Engaging in discussions and seeking outside perspectives can help you refine your manuscript and address any remaining concerns raised by the reviewer.Step 6: Reflect and ReviewOnce your revisions are complete, take a step back and reflect on the changes you have made. Review your manuscript thoroughly, ensuring that no new errors or inconsistencies have been introduced. This step is critical in maintaining the quality and credibility of your work.Step 7: Prepare Your Cover LetterBefore resubmitting your revised manuscript, prepare a cover letter addressed to the Tnnls editor. In the letter, concisely summarize the changes you have made and how you have addressed each of the reviewer's concerns. Clearly articulate why your revised work is ofvalue and should be reconsidered for publication.Step 8: Submitting the Revised ManuscriptFollow the Tnnls guidelines for resubmission carefully. Attach the revised manuscript, along with your cover letter, and any other required documents. Submit your revised work with confidence, knowing that you have addressed the reviewer's feedback and improved the quality of your research.Conclusion:Receiving a "Reject and Resubmit" decision from Tnnls can initially be discouraging, but it presents an opportunity to improve the quality of your manuscript. By carefully understanding the reviewer's feedback, developing a revision plan, making thoughtful revisions, and seeking assistance if needed, you can effectively address the concerns raised and increase your chances of acceptance upon resubmission. Embrace this opportunity for growth and continue to refine your research, ultimately contributing to the advancement of knowledge in your field.。
不墨守成规学会变通的英语作文800
不墨守成规学会变通的英语作文800Embracing Fluidity: The Importance of Adaptability in a Dynamic World.In the ever-evolving tapestry of life, the ability to adapt and embrace change has become an indispensable virtue. As the world around us undergoes constant transformation, those who remain tethered to the familiar and resist innovation risk falling behind. Conversely, those who cultivate a mindset of flexibility and adaptability will thrive in the face of uncertainty.Throughout history, countless examples illustrate the profound impact of adaptability. When faced with the riseof Gutenberg's printing press, those who clung totraditional methods of manuscript production found themselves displaced. However, those who embraced the new technology and adapted their skills flourished in the emerging printing industry. Similarly, the advent of the internet revolutionized communication and informationaccess. While some struggled to navigate the digital realm, others recognized its potential and embraced its transformative power, unlocking new opportunities for connectivity and innovation.The ability to adapt is not limited to technological advancements. In the realm of business, those who fail to respond to shifting market trends often find themselves ata competitive disadvantage. Conversely, companies that embrace adaptability can innovate, pivot, and respond effectively to customer needs and evolving market conditions. By embracing a culture of flexibility and experimentation, businesses can remain relevant and competitive in the face of constant change.Adaptability also plays a vital role in personal growth and development. Those who remain steadfast in theirbeliefs and behaviors may miss out on new opportunities and experiences. By embracing fluidity, we open ourselves up to the possibility of learning new skills, embracing different perspectives, and expanding our horizons. Whether it's exploring a new hobby, embarking on a different career path,or simply trying a new approach to a problem, adaptability empowers personal growth and fulfillment.In today's rapidly changing world, the importance of adaptability cannot be overstated. It has become an essential skill for individuals, organizations, and societies alike. By fostering a mindset of flexibility and openness to change, we empower ourselves to navigate uncertainty, capitalize on new opportunities, and thrive in the face of constant transformation.The path to adaptability begins with recognizing the importance of continuous learning. By actively seeking out new knowledge, skills, and experiences, we expand our intellectual bandwidth and increase our ability to respond effectively to unforeseen challenges. Additionally, it is crucial to cultivate a growth mindset, embracing feedback and viewing mistakes as opportunities for improvement.Adaptability also requires a willingness to let go of preconceived notions and embrace new perspectives. By challenging our assumptions and seeking out diverseviewpoints, we open ourselves up to innovative ideas and solutions. Furthermore, practicing empathy and understanding the needs of others can help us better navigate interpersonal relationships and work effectively in diverse environments.In conclusion, embracing fluidity and becoming a more adaptable individual or organization is not merely a matter of preference but a necessity in today's dynamic world. By cultivating a mindset of flexibility, openness to change, and continuous learning, we empower ourselves to thrive in an ever-evolving landscape. By adapting to the inevitable shifts and challenges that life throws our way, we unlock new opportunities, enhance personal growth, and contribute meaningfully to a rapidly changing world.。
我哥哥写的书作文英语
My brother has always been an avid reader and a lover of storytelling.His passion for the written word led him to write a book,a journey that was both challenging and rewarding.Heres a glimpse into the process and the result of his literary endeavor.The InspirationThe book was inspired by a mix of his personal experiences and a deep fascination with the human psyche.He wanted to explore the complexities of relationships,the power of dreams,and the resilience of the human spirit.The story revolves around a young mans journey of selfdiscovery,set against the backdrop of a rapidly changing world.The Writing Process1.Research:My brother began by conducting extensive research on the themes he wanted to explore.He read books,articles,and interviewed people from diverse backgrounds to gain a deeper understanding of his subject matter.2.Outlining:He then created a detailed outline of the plot,character arcs,and key events. This helped him maintain a clear direction and structure throughout the writing process.3.Drafting:The first draft was a raw and unpolished version of the story.He allowed himself the freedom to write without worrying about grammar or style,focusing instead on getting the story down on paper.4.Revision:After completing the first draft,he went through several rounds of revisions, refining the plot,deepening the characters,and polishing the prose.5.Feedback:He sought feedback from beta readers,friends,and family.Their insights helped him identify areas that needed improvement and gave him fresh perspectives on his work.6.Editing:With the help of a professional editor,he finetuned the manuscript,ensuring it was free of grammatical errors and flowed smoothly.The Books ImpactThe book has resonated with readers,who appreciate its depth,emotional resonance,and thoughtprovoking themes.It has sparked discussions on the nature of dreams,the importance of selfawareness,and the power of human connection.The Journeys LessonsWriting a book is a marathon,not a sprint.It requires patience,discipline,and a willingness to learn and grow.My brothers journey has taught him the importance of perseverance,the value of constructive criticism,and the joy of sharing a story that touches peoples hearts.ConclusionMy brothers book is more than just a collection of words on paper its a testament to his creativity,his resilience,and his love for storytelling.It serves as an inspiration to anyone who dreams of writing their own book,proving that with dedication and hard work,ones imagination can come to life in the form of a published work.。
美好未来,努力创造演讲稿
美好未来,努力创造演讲稿尊敬的听众们,首先,我想和大家分享一个共同的目标:为了我们的美好未来,我们应该努力创造。
无论是个人、社会还是整个世界,只有通过不断地努力和创新,我们才能够实现更加美好的未来。
在这个快速发展的时代,我们面临着各种挑战和机遇。
技术的进步、社会的变革,给我们带来了无限的可能性。
但是同时,也带来了许多问题和困扰。
我们面临着环境污染、资源短缺、人口增长等重大挑战。
为了应对这些问题,我们需要勇气和创造力。
创造力是解决问题的关键。
通过创造力,我们可以找到新的思路和方法,来应对困难和挑战。
创造力激发我们的想象力,帮助我们发现新的可能性。
无论是在个人生活中,还是在工作和社会责任中,创造力都是非常重要的素质。
那么,如何培养和发展创造力呢?首先,我们应该保持开放的心态,接纳新的观念和想法。
我们不应该被传统的思维方式所束缚,而是要敢于冒险和尝试。
其次,我们应该注重多样性和包容性。
不同的观点和背景能够为我们提供更广阔的思维空间。
最后,我们应该持之以恒地进行研究和不断的自我提升。
只有不断地研究和积累知识,我们才能够成为具有创造力的人。
在我们努力创造的过程中,我们也要记住责任。
创造力不仅是为了满足我们自己的需求,更是为了造福他人和社会。
我们应该用我们的创造力来解决重大的社会问题,推动社会的发展和进步。
尊敬的听众们,让我们一起努力创造一个更加美好的未来。
通过发挥我们的创造力,解决问题,创新思维,我们可以为世界带来积极的改变。
让我们相信自己的力量,坚定地走向美好未来。
谢谢大家!——[English Translation]Creating a Better Future - Speech ManuscriptRespected audience,In this rapidly advancing age, we face various challenges and opportunities. Technological advancements and social transformations have brought endless possibilities. However, at the same time, they have also presented us with numerous problems and concerns. We are confronted with environmental pollution, resource scarcity, population growth, and other significant challenges. To address these issues, we need courage and creativity.Creativity is key to problem-solving. Through creativity, we can find new perspectives and approaches to confront difficulties and challenges. Creativity inspires our imagination and helps us discover new possibilities. Whether in personal life, work, or social responsibility, creativity is an essential quality.In our pursuit of creating, we must also remember our responsibility. Creativity is not only to fulfill our own needs but also to benefit others and society. We should utilize our creativity to address major social issues and drive social development and progress.Respected audience, let us work together to create a better future. Through the exertion of our creativity, problem-solving, and innovative thinking, we can bring positive changes to the world. Let us believe in our own strength and march steadfastly towards a brighter future.Thank you, everyone!。
制作精美英语绘本作文
制作精美英语绘本作文Creating a Beautiful English Picture Book。
Creating a picture book is a delightful endeavor that combines the beauty of storytelling with captivating visuals. A well-crafted picture book not only entertains children but also educates and inspires them. Here's a guide to help you create a beautiful English picture book that will captivate readers of all ages.1. Choose a Theme。
The first step in creating a picture book is choosing a theme or a central idea for your story. Whether it's a tale of friendship, adventure, or learning a valuable lesson, the theme will set the tone for your book.2. Develop Characters。
Once you have a theme in mind, it's time to developyour characters. Create relatable and memorable characters that readers can connect with. Think about their personalities, motivations, and how they will contribute to the story.3. Craft the Story。
decision in process之后 under review -回复
decision in process之后under review -回复"Decision in Process" and "Under Review": Making Sense of the WaitIntroduction (150-200 words)Have you ever applied for a job, submitted a manuscript for publication, or awaited an admission decision? If so, you must be familiar with the anticipation and frustration that comes with the status updates "Decision in Process" or "Under Review." In this article, we will explore the potential meaning and implications of these enigmatic phrases. Furthermore, we will delve into the possible steps taken during this period, helping you to better understand the process and manage your expectations.1. What does "Decision in Process" or "Under Review" mean? (300-400 words)Upon seeing these phrases, the initial instinct is often to interpret them as indicators of progress. However, the reality may be more complex. "Decision in Process" or "Under Review" generally signifies that your submission has passed the initial screening phase and has entered a more detailed evaluation. This evaluation may involve multiple rounds of review by different stakeholders,depending on the context of your application, such as academic committees or human resource departments.2. Possible steps taken during the evaluation process (800-900 words)a) Initial Assessment: Immediately after submission, your application or manuscript undergoes a preliminary review. During this stage, a cursory examination takes place to ensure that the submission meets the minimum requirements or guidelines. If deemed ineligible, the decision may be expedited, resulting in a quicker rejection. On the other hand, if deemed eligible, the process moves on to subsequent stages.b) Screening and Ranking: In this stage, your submission is compared with others in a similar pool. The reviewers or committee members evaluate the quality, relevance, and fit of your work based on predetermined criteria. Each reviewer may assign scores or provide qualitative feedback that will later be discussed during the decision-making phase.c) External Review (optional): Some organizations or journals may opt to include external experts in the evaluation process. Theseexperts, typically well-respected individuals in their field, provide unbiased feedback on the work's originality, significance, and methodological rigor. This step adds an extra layer of thoroughness and ensures diversity in opinion.d) Committee/Departmental Evaluation: In many cases, a committee or department is responsible for evaluating your submission. These members may assess your work individually and then discuss it collectively, taking into account the reviewers' feedback and scores. The goal is to reach a consensus on the overall ranking or decision. This phase often involves extensive discussions, considerations of various perspectives, and multiple iterations.e) Final Decision: After careful consideration, the final decision is made. The outcome could be an acceptance, a rejection, or a request for revisions. However, it is worth noting that the decision-making process itself is a collaborative effort to ensure fairness and quality.3. Coping strategies during the waiting period (300-400 words)a) Distract yourself: The waiting period can be excruciating, so findactivities or hobbies that help occupy your mind and reduce stress. Engage in exercise, read books, watch movies, or spend time with loved ones. This diversion can provide a much-needed respite from constantly checking for updates.b) Focus on personal growth: Rather than obsessing over the decision, utilize this waiting period for self-improvement. Develop new skills, attend workshops or conferences, or explore new avenues of research. Not only will this distract you, but it will also enhance your professional profile and increase your chances of success in the future.c) Seek support: It is essential to have a strong support system during this potentially challenging period. Share your anxieties and hopes with friends, family, or fellow applicants, as they can provide empathy, encouragement, and advice.Conclusion (100-150 words)Receiving a "Decision in Process" or "Under Review" notification can evoke a range of emotions. Throughout this article, we have explored the potential meaning behind these phrases anddiscussed the possible steps taken during the evaluation process. Understanding the complex nature of this stage can help manage expectations and alleviate anxiety. By adopting coping strategies and focusing on personal growth, you can effectively navigate the waiting period, irrespective of the final decision. Remember that this part of the journey is an opportunity for personal and professional development, and success can come in many forms.。
17-4不锈钢执行标准
17-4不锈钢执行标准
17-4不锈钢是一种马氏体不锈钢,其执行标准如下:
1. 中国标准(GB/T 1220-2007):17-4PH不锈钢棒材、扁材和锻件。
2. 美国标准(ASTM A293-04):17-4PH不锈钢棒材和锻件。
3. 日本标准(JIS G4326-1999):17-4PH不锈钢棒材和锻件。
4. 德国标准(DIN 17440):17-4PH不锈钢棒材和锻件。
5. 国际标准(ISO 683-15):17-4PH不锈钢棒材和锻件。
17-4不锈钢适用于制造耐腐蚀、耐磨和高强度的零部件,如轴、齿轮、紧固件等。
在不同的国家和地区,17-4不锈钢的执行标准可能略有差异,但主要成分和性能要求基本相同。
在选购17-4不锈钢产品时,请确保遵循相关标准,以确保
产品质量。
征稿启事英文开头范文
征稿启事英文开头范文Dear Authors,。
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http://www.systemsintelligence.hut.fi [accessed 2007-04-17]
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consequences of different interventions. Models of social interaction allow us to analyze how micro-level phenomena can influence macro-level outcomes.
Manuscript 2007-4-17
Perspectives on Team Dynamics: Meta Learning and Systems Intelligence
Jukka Luoma, Raimo P. Hämäläinen and Esa Saarinen jukka.luoma@hut.fi, raimo@hut.fi, esa@hut.fi Systems Analysis Laboratory Helsinki University of Technology
We see the concept of a system as a useful one in understanding human action in dynamic settings. Today, many organizational studies describe organizational phenomena by drawing analogies to concepts which originate in the field of mathematical modeling of dynamical systems. The use of systems studies ranges from quantitative to qualitative modeling; from numerical modeling (e.g. Sterman, 2000, 2002) to making simulation experiments which are considered analogous to organizational phenomena (e.g. Morel and Ramanujam, 1999; Stacey, 1995, 2001, 2003) and identifying organizations as systems (e.g. Senge, 1990; Senge et al., 1994). Complexity studies have also been suggested as tools to make sense of organizational phenomena (see e.g. Andersson, 1999). Yet opinions about the real usefulness of complex systems studies in organizational life vary (see e.g. Stacey et al., 2000). We believe that mathematical modeling of human systems does, indeed, provide a convenient way of analyzing the systems’ behavior and testing the possible
Corresponding author:
Jukka Luoma Helsinki tems Analysis Laboratory, P.O. Box 1100, 02150 HUT, Finland
Email: jukka.luoma@tkk.fi Tel.: Fax: +358 9 451 3053 +358 9 451 3096
Key words: team interaction, meta learning, systems intelligence, chaotic dynamics, Lorenz attractor
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Introduction
The perspective taken in Systems Intelligence1 (SI) (Saarinen and Hämäläinen, 2004; Hämäläinen and Saarinen, 2006, 2007) is the acknowledgement that we are always embedded in and a part of systems involving interaction and feedback, which we cannot escape but in which we can take intelligent actions. The study of systems intelligence is concerned with the behavioral intelligence of human agents in systemic environments. Systems intelligence looks for efficient ways for an individual to change her own behavior in order to influence the behavior of a system in different environments.
The literature on the modeling of social interaction is extensive. It dates back to the early work of Herbert A. Simon (1952) who illustrated how mathematical modeling could be used in “clarifying of concepts” of a theory, and in “derivation of new propositions”. Here, we only list some recent studies, which in our view have connections to the topic of this paper. Robert Axelrod (1984) used game theoretical experiments to show that under suitable conditions cooperation can emerge without a central authority. Young (2001) built a dynamical model of conformity based on Blume’s (1993) work on strategic interaction. Gintis et al. (2005) used game theoretical models and experimental game theory to study decision making in social interaction and the evolution of cooperation. Collins and Hanneman (1998) suggested a common framework for modeling the theory of interaction rituals (Collins, 1981, 2004). Gottman et al. (2002a, 2002b) developed nonlinear difference equations to model marital interaction as well as to design of counseling interventions for unhappy couples. Losada (1999; Losada and Heaphy, 2004) and his associates used nonlinear differential equations to describe team behavior. They paid particular attention to the potentially chaotic behavior of the model, and to the interpretation of that behavior. They discussed the model behavior in connection with the concept of meta learning which, as introduced by Losada (1990), refers to conversational, or micro-behavioral competence of teams. What is common to all of these studies is that they all use modeling as a tool to understand phenomena related to the dynamics of human interaction. This paper focuses on Losada’s research on team interaction and in particular, on the characteristics of the dynamical model proposed by him.
Manuscript 2007-4-17
Abstract
Losada (1999) observed management teams develop their annual strategic plans in a lab designed for studying team behavior. Based on these findings he developed a dynamical model of team interaction and introduced the concept of Meta Learning (ML) which represents the ability of a team to avoid undesirable attractors. This paper analyzes the dynamic model in more detail and discusses the relationship between meta learning and the new concept of Systems Intelligence (SI) introduced by Saarinen and Hämäläinen (2004). In our view, the meta learning ability of a team clearly represents a systems intelligent competence. Losada’s mathematical model predicts interesting dynamic phenomena in team interaction. However, our analysis shows how the model also produces strange and previously unreported behavior under certain conditions. Thus, the predictive validity of the model also becomes problematic. It remains unclear whether the model behavior can be said to be in satisfactory accordance with the observations of team interaction.