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Chinese Chemical Letters 1995年第8期6卷 713-714页

作者： Jiang, yl Hu, YQ Yuan, YC Dalian Univ Technol Sch Chem Engn Dalian 116012 Peoples R China

The complex of quatemare ammonium halide and hydrogen halide was found to he the very efficient catalyst in the rapid cleavage and esterification of benzyl alkyl ethers with carboxylic acids under microwave irradiation.

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数字赋能乡村公共文化事业高质量发展——以乡村图书馆建设为例

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三峡大学学报（人文社会科学版） 2025年第1期47卷 65-71页

作者：卢迪曲阜师范大学马克思主义学院山东济宁273100

数字赋能乡村公共文化事业高质量发展是全面推进乡村振兴战略的基本要求,也是逐步实现人民群众精神文化生活共同富裕的题中之义。乡村图书馆是乡村公共文化服务体系的重要组成部分,在数字赋能过程中要以民需导向的服务理念、技术支撑的... 详细信息

数字赋能乡村公共文化事业高质量发展是全面推进乡村振兴战略的基本要求,也是逐步实现人民群众精神文化生活共同富裕的题中之义。乡村图书馆是乡村公共文化服务体系的重要组成部分,在数字赋能过程中要以民需导向的服务理念、技术支撑的转型升级、人文铸魂的角色定位、数字乡村的建设助力作为建设的数智图景,同时在基础设施、智慧人才、数字素养、长效机制等方面存在着发展的现实梗阻。因此,在数字赋能乡村图书馆建设过程中要从推进数字化基础设施建设、加强智慧人才的人力储备、全方位提升乡村数字素养、优化数字转型的顶层设计这四个方面入手。

关键词：数字赋能乡村公共文化乡村图书馆

Immobilization of Glucoamylase onto Novel Porous Supports Containing Cyclic Carbonate

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Chinese Chemical Letters 2001年第11期12卷 993-996页

作者： Huang, JX Huo, yl Li, Y Yuan, Z Nankai Univ Dept Chem State Key Lab Funct Polymer Mat Adsorpt & Separat Tianjin 300071 Peoples R China

Glucoamylase was immobilized onto novel porous polymer supports containing cyclic carbonate. The relationship between activity of immobilized glucoamylase and the properties of porous polymer supports was investigated... 详细信息

关键词： glucoamylase immobilization polymer supports cyclic carbonate

Quantitative Correlation between Group Connectivity Index and Property of Flotation Reagent

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Journal of Central South University 2000年第1期12卷 25-28页

作者： Cao, YC Jiang, YR Xue, yl Wang, DZ Cent S Univ Technol Dept Mineral Engn Changsha 410083 Peoples R China

Topological method is applied firstly to calculate the group connectivity indexes of some flotation reagents for sulfide minerals and oxide minerals. The study reveals that some properties of flotation reagents, such as group electronegativity, energy criterion, solubility product of chemicals and maximum wavelength of ultraviolet absorbency, have linear correlation with the first order group connectivity index (GCI) of polar group, and the related coefficients are all larger than 0.900. The GCI can be used to characterize the structure of groups, and is a sort of new effective structural parameter to study the quantitative structure activity relationship of flotation reagents.

关键词： flotation reagents group connectivity index property quantitative correlation

Oxygen isotope composition of mantle-derived materials from Anhui-Jiangsu basalt province, East China

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Chinese Science Bulletin 1997年第8期42卷 662-665页

作者： Zhi, XC Li, yl Zheng, YF Departrnent of Earth and Space Sciences University of Science and Technology of China (USTC) Hefei China Advanced Ccntre for Earth Scicncc and Astronomy USTC Third World Academy of Science Hefei China

OXYGEN isotope composition is an important key to an understanding of petrogenesis,mantleheterogeneity,crust-mantle interaction,*** great mass of data of the mantle-derived ma-terials published abroad have announced t... 详细信息

关键词： oxygen isotope basalt peridotite xenolith mineral megacryst Anhui-Jiangsu basalt province.

Synthesis of Terminal Amino Substituted Cyclopentadienyl Titanium Complexes

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Chinese Chemical Letters 1996年第12期7卷 1139-1142页

作者： Qian, yl Guo, RW Huang, JL Jonas, K E CHINA UNIV SCI & TECHNOL ORGANOMET CHEM LABSHANGHAI 200237PEOPLES R CHINA MAX PLANCK INST KOHLENFORSCH D-45470 MULHEIMGERMANY

the synthesis of twelve new terminal amino substituted titanocene dichlorides is reported.

关键词： Synthesis of Terminal Amino Substituted Cyclopentadienyl Titanium Complexes

Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-Yu Zhao Juan-Han Yu Yi-Hua Wang Yi-Xin Liu lu Xu Lin Fu Ning Yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

Effect of Inorganic Filler on Thermally Stimulated Current in Low-density Polyethylene

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Journal of Materials Science & Technology 1997年第3期13卷 223-226页

作者： Lei, QQ Fan, Y Wang, X Lin, JQ Xiong, yl Dept. of Electrical Materials Engineering Harbin University of Science and Technology Harbin 150040 China

By measuring the thermally stimulated current (TSC) spectra at various fields in low-density polyethylene with inorganic filler (f-LDPE) and comparing with those in LDPE, we found that their TSC spectra show significant distinction. In virtue of analysing change of peak current, peak temperature and activation energy with poling field, it can be depicted that the TSC in f-LDPE specimen comes from dipole relaxation of residual silanol groups on surface of filler, but the injected electrons in very high fields, no doubt, are captured in deeper traps, and they can not be released even near 100 degrees C. The filler (kaolin) plays a key role in changing the TSC spectra through deep and interfacial traps existing between the filler and the polymer matrix. Whereas, the TSC spectra of LDPE specimen possess marked characteristics of electron release from traps in amorphous-crystalline or crystalline region.

关键词： Low density polyethylenes

STUDIES　ON　THE　ANIONIC　SPECIES　OF　SODIUM　AluMINATE　SOluTIONS　OF　LOW　CAUSTIC　RATIOS

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Chinese Chemical Letters 1995年第10期6卷 885-886页

作者： Cao, yl Liu, HL Chen, NY Henan Normal Univ Dept Chem Xinxiang 453002 Peoples R China Acad Sinica Shanghai Inst Met Shanghai 200050 Peoples R China

UV and Raman spectra were used in the studies of anionic species in sodium alundnate *** absorption peaks near 233nm and 270nm in UV spectra were found and assigned to Al(OH)4 and[(HO)3 Al-O- Al(OH)3 ] 2 -respectively, while the results of Raman spectra measurements and quantum chemicalcalculations by using MNDO and DV-Xa methods were in good agreement with the above conclusions.

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The　Molecular　Shape　Effect　in　the　Separation　of　Ionic　Isomers　by　Capillary　Zone　Electrophoresis

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Chinese Chemical Letters 1996年第12期7卷 1105-1108页

作者： Qi, SZ Fang, XH Huang, AJ Sun, yl BEIJING UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

The present understanding of electrophoretic mobility cannot satisfactorily be used to explain the separation capebility of capillary zone electrophoresis for isomeric anions. A molecular shape effect concept was proposed to describe the separation mechanism for isomeric anoins with om. p-hydroxybenzoates and two food colorants. amaranth and ponceau 4R as examples.

关键词： Isomers Capillary Effect the