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Li6P6O18: X-ray powder structure determination of lithium cyclohexaphosphate Li6P6O18:环六磷酸锂的x射线粉末结构测定
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80006-4
T. Ben-Chaabane , L. Smiri-Dogguy , Y. Laligant , A. Le Bail
{"title":"Li6P6O18: X-ray powder structure determination of lithium cyclohexaphosphate","authors":"T. Ben-Chaabane ,&nbsp;L. Smiri-Dogguy ,&nbsp;Y. Laligant ,&nbsp;A. Le Bail","doi":"10.1016/S0992-4361(98)80006-4","DOIUrl":"10.1016/S0992-4361(98)80006-4","url":null,"abstract":"<div><p>Preparation, characterization by X-ray diffraction, IR absorption, DTATG analysis, and <em>ab-initio</em> crystal structure determination are reported for anhydrous lithium cyclohexaphosphate Li<sub>6</sub>P<sub>6</sub>O<sub>18</sub>. It crystallizes in a monoclinic cell (space group P2<sub>1</sub>/n N<sup>o</sup>14, Z=2) with a = 7.9911(3)Å, b = 17.0319(6)Å, c = 5.3208(2)Å and <em>β</em> = 99.433(1)°. X-ray powder diffraction data were fitted by Rietveld method leading to R<sub>Bragg</sub> = 0.034. The crystal structure of Li<sub>6</sub>P<sub>6</sub>O<sub>18</sub> is built up from P<sub>6</sub>O<sub>18</sub> ring anions, with 1 internal symmetry. Six lithium coordination polyhedra (two pseudo square pyramids and four tetrahedra) share common edges and corners as to form Li<sub>6</sub>O<sub>16</sub> groups. These cationic groups build up a layer in the (1 0 1¯) plane showing large distorted hexagonal tunnels and interconnect the P<sub>6</sub>O<sub>18</sub> rings in a three dimensional way.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 255-264"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80006-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79979023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Reaction mechanism in the formation of perovskite Pb(Fe1/2Nb1/2)O3 by calcining of mixed oxides (CMO) 混合氧化物(CMO)煅烧生成钙钛矿Pb(Fe1/2Nb1/2)O3的反应机理
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80003-9
M. Jenhi , E.H. El Ghadraoui , H. Bali , M. El Aatmani , M. Rafiq
{"title":"Reaction mechanism in the formation of perovskite Pb(Fe1/2Nb1/2)O3 by calcining of mixed oxides (CMO)","authors":"M. Jenhi ,&nbsp;E.H. El Ghadraoui ,&nbsp;H. Bali ,&nbsp;M. El Aatmani ,&nbsp;M. Rafiq","doi":"10.1016/S0992-4361(98)80003-9","DOIUrl":"10.1016/S0992-4361(98)80003-9","url":null,"abstract":"<div><p>A calcining at 300°C and sintering process were proposed to obtain a pure perovskite phase Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> from a 4PbO/Nb<sub>2</sub>O<sub>5</sub>/Fe<sub>2</sub>O<sub>3</sub> mixture, which is calcined at 300°C for several days and sintered at various temperatures for 2h; the resultant powder was air quenched. The X-ray powder diffraction pattern of the sintered sample is carefully analyzed to identify intermediate phases. The effects of calcining at 300°C and sintering on obtaining PFN are based on the deformation of Pb<sub>5</sub>Fe<sub>4</sub>Nb<sub>4</sub>O<sub>21</sub>. A reaction mechanism for the calcining cycle of Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> is proposed.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 221-230"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80003-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85290529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Subsolidus phase equilibrium in the Cu-Sb-O system Cu-Sb-O体系的亚固相平衡
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80005-2
M. Stan, S. Mihaiu, D. Crisan, M. Zaharescu
{"title":"Subsolidus phase equilibrium in the Cu-Sb-O system","authors":"M. Stan,&nbsp;S. Mihaiu,&nbsp;D. Crisan,&nbsp;M. Zaharescu","doi":"10.1016/S0992-4361(98)80005-2","DOIUrl":"10.1016/S0992-4361(98)80005-2","url":null,"abstract":"<div><p>T6he study of the subsolidus phase equilibrium in Cu-Sb-O system was started using samples with compositions laying, at room temperature, in the CuO-Sb<sub>2</sub>O<sub>3</sub> subsystem. Isothermal and non-isothermal experiments were performed to analyze the system in the 500–1000°C range. At high temperatures (over 500°C) the system transforms in a quaternary one: CuO-Cu<sub>2</sub>O-Sb<sub>2</sub>O<sub>3</sub>-Sb<sub>2</sub>O<sub>5</sub> as Sb<sub>2</sub>O<sub>3</sub> undergoes oxidation to Sb<sub>2</sub>O<sub>4</sub> and Sb<sub>2</sub>O<sub>5</sub> and Cu<sub>2</sub>O<sub>3</sub> reduces to Cu<sub>2</sub>O. The formation of the CuSb<sub>2</sub>O<sub>6</sub> and Cu<sub>4</sub>SbO<sub>4.5</sub> binary compounds is reported. The calculations of mass variation and atomic composition modifications lead to a quaternary oxide representation of the subsolidus phase equilibrium.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 243-254"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80005-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75781905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Time-of-flight neutron diffraction study on lithium dinitride iodide, Li7N2I 二氮化锂Li7N2I的飞行时间中子衍射研究
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80001-5
R. Marx
{"title":"Time-of-flight neutron diffraction study on lithium dinitride iodide, Li7N2I","authors":"R. Marx","doi":"10.1016/S0992-4361(98)80001-5","DOIUrl":"10.1016/S0992-4361(98)80001-5","url":null,"abstract":"<div><p>The structure of Li<sub>7</sub>N<sub>2</sub>I has been redetermined from neutron diffraction data using the high resolution powder diffractometer (HRPD) at the spallation source ISIS, UK. The title compound crystallizes in the space group F4¯3m (No.216), a=1038.797(1) pm with eight formula units per unit cell. The Li<sub>7</sub>N<sub>2</sub>I-structure comprises a cationic Li<sub>13</sub>N<sub>4</sub><sup>staggered+</sup> framework which is built of monocapped octahedra. While all Li atoms at the vertices are shared between two neighbouring units, the capping metal atom is shared by four octahedra. The Li<sub>13</sub>N<sub>4</sub><sup>staggered+</sup> network is closely related to the B<sub>2</sub>X<sub>6</sub> octahedral framework observed in the pyrochlore structure. Large voids in the structure are occupied by iodide and a Li<sup>+</sup>T ion pair. There is evidence that the nonsphericity of the Li<sup>+</sup>I<sup>−</sup> dipole induces a complicated Lidisorder in the Li-N framework.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 197-209"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80001-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76566302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Highly conducting and transparent sprayed indium tin oxide 高导电性和透明喷涂氧化铟锡
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80002-7
M. Rami, E. Benamar, C. Messaoudi, D. Sayah, A. Ennaoui
{"title":"Highly conducting and transparent sprayed indium tin oxide","authors":"M. Rami,&nbsp;E. Benamar,&nbsp;C. Messaoudi,&nbsp;D. Sayah,&nbsp;A. Ennaoui","doi":"10.1016/S0992-4361(98)80002-7","DOIUrl":"10.1016/S0992-4361(98)80002-7","url":null,"abstract":"<div><p>Spray pyrolysis process has been used to deposit highly transparent and conducting films of tin doped indium oxide onto glass substrates. The electrical, optical and structural properties have been investigated as a function of various deposition parameters namely dopant concentrations, temperature and nature of substrates. X-ray diffraction patterns have shown that deposited films are polycrystalline without second phases and have preferred orientation [400]. Indium tin oxide layers with small resistivity value around 7.10<sup>−5</sup>Ω.cm and transmission coefficient in the visible and near IR range of about 85–90 % have been easily obtained.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 211-219"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80002-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75446729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Structural study of monoaquabis(pyridine)bis(saccharinato)copper(II), [Cu(H2O)(py)2(sac)2]
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-03-01 DOI: 10.1016/S0992-4361(98)80004-0
G. Jovanovski, P. Naumov, O. Grupče, B. Kaitner
{"title":"Structural study of monoaquabis(pyridine)bis(saccharinato)copper(II), [Cu(H2O)(py)2(sac)2]","authors":"G. Jovanovski,&nbsp;P. Naumov,&nbsp;O. Grupče,&nbsp;B. Kaitner","doi":"10.1016/S0992-4361(98)80004-0","DOIUrl":"10.1016/S0992-4361(98)80004-0","url":null,"abstract":"<div><p>The structure of monoaquabis(pyridine)bis(saccharinato)copper(II), [Cu(H<sub>2</sub>O)(py)<sub>2</sub>(sac)<sub>2</sub>], has been investigated by X-ray diffraction and infrared spectroscopy. The complex crystallizes in the orthorhombic space group <em>I bat</em>2 with the following unit cell parameters: <em>a</em> = 9.4874(7), <em>b</em> = 21.545(1), <em>c</em> = 13.164(1) Å, <em>V</em>= 2690.8(4) Å<sup>3</sup>, <em>D</em><sub>c</sub> = 1.491 g cm<sup>−3</sup>, <em>Z</em> = 4, <em>R</em> = 0.025, <em>wR</em> = 0.036. The structure consists of individual [Cu(H<sub>2</sub>O)(py)<sub>2</sub>(sac)<sub>2</sub>] molecules. The copper atom is bonded to two pyridine and two saccharinato nitrogen atoms as well as to the water oxygen atom forming a distorted square pyramid. The copper atom lying on a twofold rotation axis is 0.2209(7) Å above the basis square plane formed by the four nitrogen atoms. The bond distances in the coordination polyhedron are: Cu-N11 2.032(2) Å, Cu-N21 2.040(2) Å, Cu-OW1 2.177(2) Å. The N-Cu-N angles amount 88.67(8)° and 89.97(8)° as well as 167.36(9) and 167.69(8)°, while the values of the OW1-Cu-N angles are 96.16(6)° and 96.32(6)°. The FT infrared spectral features in the region of the OH, OD, CO and SO<sub>2</sub> stretching vibrations are discussed and correlated with the data obtained by X-ray diffraction.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 231-242"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80004-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74094966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 41
Spray pyrolysis routes to electroceramic powders and thin films 喷雾热解路线的电陶瓷粉末和薄膜
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-02-01 DOI: 10.1016/S0992-4361(98)80196-3
C.H. Chen, F.L. Yuan, J. Schoonman
{"title":"Spray pyrolysis routes to electroceramic powders and thin films","authors":"C.H. Chen,&nbsp;F.L. Yuan,&nbsp;J. Schoonman","doi":"10.1016/S0992-4361(98)80196-3","DOIUrl":"https://doi.org/10.1016/S0992-4361(98)80196-3","url":null,"abstract":"<div><p>A brief overview on two novel spray pyrolysis techniques developed recently in our laboratory, i.e. Electrostatic Spray Deposition (ESD) and Flame-Assisted Ultrasonic Spray Pyrolysis (FAUSP), is presented in this paper. Alcoholic solutions of metal salts or alkoxides are used as precursor solutions. Both techniques have been successfully applied to synthesize electroceramic materials including semiconductor TiO<sub>2</sub>, ionic conductor ZrO<sub>2</sub>, and mixed electronic-ionic conductor LiMn<sub>2</sub>O<sub>4</sub>. ESD is usually used for the fabrication of thin films with various morphologies, while FAUSP is used for the production of fine powders.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 2","pages":"Pages 189-196"},"PeriodicalIF":0.0,"publicationDate":"1998-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80196-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92064068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemistry of interactions in the La2O3-MO(MCO3)-Mn2O3, M = Ca, Sr, Ba, Cd systems La2O3-MO(MCO3)-Mn2O3, M = Ca, Sr, Ba, Cd体系中相互作用的化学性质
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-02-01 DOI: 10.1016/S0992-4361(98)80190-2
B.V. Slobodin, L.L. Surat, V.G. Vassiliev, G.P. Schveikin, A.P. Nossov
{"title":"Chemistry of interactions in the La2O3-MO(MCO3)-Mn2O3, M = Ca, Sr, Ba, Cd systems","authors":"B.V. Slobodin,&nbsp;L.L. Surat,&nbsp;V.G. Vassiliev,&nbsp;G.P. Schveikin,&nbsp;A.P. Nossov","doi":"10.1016/S0992-4361(98)80190-2","DOIUrl":"10.1016/S0992-4361(98)80190-2","url":null,"abstract":"<div><p>The sequence of phase transitions in the system La<sub>2</sub>O<sub>3</sub>-MO(MCO<sub>3</sub>)Mn<sub>2</sub>O<sub>3</sub>, (M=Ca, Sr, Ba, Cd) and the span range of La<sub>1−x</sub>M<sub>x</sub>MnO<sub>3±δ</sub> solid solutions formed were studied. It is demonstrated that interaction begins at 650°C due to formation of divalent metal manganites. Just simultaneously as a result of oxidation-reduction processes and structural transformations the synthesis of small quantities of solid solutions takes place, which is kinetically favoured in the case of smaller divalent metal cations. The chemical transformation finishes at 1200°C. The values of x at all systems are near 0,35. The absence of CdMnO<sub>3</sub> composition in the system CdO-MnO is proved.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 2","pages":"Pages 111-115"},"PeriodicalIF":0.0,"publicationDate":"1998-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80190-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82931559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The crystal structure of K2[Cu3ZnF(PO4)3], a new mixed zinc copper phosphate 新型混合磷酸锌铜K2[Cu3ZnF(PO4)3]晶体结构
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-02-01 DOI: 10.1016/S0992-4361(98)80192-6
W. Massa, O.V. Yakubovich, O.V. Karimova, L.N. Dem'Yanetz
{"title":"The crystal structure of K2[Cu3ZnF(PO4)3], a new mixed zinc copper phosphate","authors":"W. Massa,&nbsp;O.V. Yakubovich,&nbsp;O.V. Karimova,&nbsp;L.N. Dem'Yanetz","doi":"10.1016/S0992-4361(98)80192-6","DOIUrl":"10.1016/S0992-4361(98)80192-6","url":null,"abstract":"<div><p>The title compound has been prepared by hydrothermal synthesis and its crystal structure was determined by single crystal X-ray diffraction: space group P2<sub>1</sub>/m, a = 4.8890(2), b = 14.3857(5), c = 7.9017(3) Å, β = 90.134(4)°, wR<sub>2</sub> = 0.123, R = 0.045. Cu<sup>2+</sup> has two different coordination polyhedra: an elongated square pyramidal [CuFO<sub>4</sub>] and square planar [CuO<sub>4</sub>] coordination in a 2:1 ratio. Edge-sharing double-pyramids and [CuO<sub>4</sub>] squares form zig-zag chains interconnected by [ZnO<sub>4</sub>] and [PO<sub>4</sub>] tetrahedra to form an open anionic framework structure whose channels are occupied by the K<sup>+</sup> ions.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 2","pages":"Pages 133-141"},"PeriodicalIF":0.0,"publicationDate":"1998-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80192-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87445532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The structure of CrVMoO7 CrVMoO7的结构
European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-02-01 DOI: 10.1016/S0992-4361(98)80194-X
K. Knorr , P. Jakubus , J. Walczak , E. Filipek
{"title":"The structure of CrVMoO7","authors":"K. Knorr ,&nbsp;P. Jakubus ,&nbsp;J. Walczak ,&nbsp;E. Filipek","doi":"10.1016/S0992-4361(98)80194-X","DOIUrl":"10.1016/S0992-4361(98)80194-X","url":null,"abstract":"<div><p>The structure of CrVMoO<sub>7</sub> has been refined from high-resolution X-ray powder diffraction data. The unit cell is triclinic (space group P1¯) with a=5.531(1)Å, b=6.585(1)Å, c=7.864(1)Å, <em>α</em>=96.143(6)°, <em>β</em>=89.847(6)° and <em>γ</em>=101.942(6)°. A two-step refinement yields R<sub><em>p</em></sub>=8.7% in the first step (pattern matching) and in the second step (structure refinement)as well. The crystal structure of the compound is isotypic to FeVMoO<sub>7</sub>. The distortion of the coordination polyhedra has been discussed within the framework of the bond valence concept and effective coordination numbers.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 2","pages":"Pages 161-171"},"PeriodicalIF":0.0,"publicationDate":"1998-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80194-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78416497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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