云南高校图书馆联盟文献共享服务平台- IMPURITIES

IMPURITIES: 作品数：283被引量：366H指数：9; 导出分析报告; 相关领域：理学更多>>; 相关作者：张皋宁艳利杨斌刘大春赵效文更多>>; 相关机构：西安近代化学研究所昆明理工大学中国农业大学河南科技大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家高技术研究发展计划中国博士后科学基金更多>>

Effect of trace cerium addition on hot deformation behavior of ultrahigh-purity copper containing sulfur: 《Transactions of Nonferrous Metals Society of China》2025年第3期888-901,共14页Ke-xing SONG Yun-xiao HUA Hai-tao LIU Yan-min ZHANG Chao-min ZHANG Yan-jun ZHOU Tao HUANG; financially supported by the National Natural Science Foundation of China(Nos.52071133,U21A2051);the Henan Province Science and Technology Tackling Key Problems Project,China(No.222102230001);the Zhongyuan Scholar Workstation Funded Project,China(No.224400510025);the Henan Key Research and Development Project,China(No.221111230600);Luoyang Major Science and Technology Innovation Special Project,China(No.2201017A)。; The effects of trace cerium(Ce)addition on the microstructural and textural evolution and the dynamic recrystallization(DRX)of the ultrahigh-purity copper(Cu)containing small amounts of sulfur(S)were investigated usin...; 关键词：Ce addition S impurities ultrahigh-purity copper microstructure dynamic recrystallization texture

Influence law on the effect of shredding characteristics of residual film in the mixture of mechanically recovered residual films and impurities in cotton fields: 《International Journal of Agricultural and Biological Engineering》2025年第1期51-63,共13页Rongqing Liang Guide Wu Ran Jia Hewei Meng Rongjian Tai Hepeng Jia Fengkun Li Za Kan Yaping Li Bingcheng Zhang Yan Zhao; National Natural Science Foundation of China(Grant No.52475243);the National Natural Science Foundation of Shandong(Grant No.ZR2023ME209);Scientific Research Fund Project of Dezhou University(Grant No.2023xjrc205);Science and Technology Plan Project of Tiemenguan(Grant No.2023GG2202);Xinjiang Production and Construction Corps Science and Technology Plan Project(Grant No.2024YD014).; Few studies have been carried out on special shredding technology and equipment,hence it is hard to find out the characteristic rule of distribution of residual films after shredding.By evaluating the mechanical prope...; 关键词：mixture of residual film and impurities residual film multi-blade toothed cutters shredding distribution feature

Effects of nitrosamine impurities on the availability of Reference Listed drugs in China: 《Journal of Chinese Pharmaceutical Sciences》2025年第1期75-81,共7页Dongsheng Yang Jianzhao Niu Yufei Feng Nian Liu Lingyun Ma; Subject construction funding project of Institute for Chemical Drug Control(Grant No.2024HYZX42)in National Institutes for Food and Drug Control,Beijing,China。; The Reference Listed drug(RLD)plays a critical role in the development and research of generic medicinal products,serving as the comparator product used in the marketing authorization application of new generic medici...; 关键词：Reference Listed drugs Nitrosamine impurities Food and Drug Administration European Medicines Agency AVAILABILITY

Local Structure and Dynamics Procedure of Impurities Fe,Al and Mn in Melt Beryllium: 《稀有金属材料与工程》2024年第11期3046-3052,共7页Zhang Jiqiang Jin Lei Luo Jiangshan Luo Bingchi Wu Weidong; National Natural Science Foundation of China(12104425);Supported by State Key Laboratory of Special Rare Metal Materials,Northwest Rare Metal Materials Research Institute Ningxia Co.,Ltd(SKL2020K001)。; The local structure and dynamics of impurities Fe,Al and Mn in beryllium were investigated on an atomic scale using ab initio molecular dynamics and statistical physics methods.The analysis of the radial distribution ...; 关键词：BERYLLIUM PURIFICATION ab initio molecular dynamics local structure activity coefficients

Analysis of Polymer Impurities in Cephalosporin Antibiotics: 《Medicinal Plant》2024年第5期22-26,30,共6页Shiqiang OU Yanxi LAI Peng XIE Hao LIU Shicheng LIU Jin QIN Yiping QIN Yizhang WANG Shengjiu GU; Supported by2023 Central Funds for Guiding Local Science and Technology Development(ZY20230102);Guilin City Scientific Research and Technology Development Plan Project(20220104-4).; [Objectives]To establish a HPLC-MS method for the determination of polymer impurities in cefathiamidine and its preparations.[Methods]Kromasil 100-5 C_(18) column(4.6 mm ×250 mm,5μm)was used for analysis;mobile phas...; 关键词：CEFATHIAMIDINE Cephalosporin polymer impurities Impurity analysis High Performance Liquid Chromatography-Mass Spectrometry

Method for Improving the Determination of Dibromoacetic Acid in Cefathiamidine: 《Medicinal Plant》2024年第5期27-30,共4页Peng XIE Hao LIU Shiqiang OU Yanxi LAI Shicheng LIU Jin QIN Yiping QIN Xian CHEN Kaimei ZHU; Supported by Central Fund for Guiding Local Science and Technology Develop-ment(ZY20230102);Guilin Scientific Research and Technology Development Plan Project(20220104-4).; [Objectives]To establish an LC-MS method for the determination of dibromoacetic acid in Cefathiamidine and Cefathiamidine for Injection.[Methods]Shiseido PC HILIC column(2.0 mm ×100 mm,3μ.m)was used.The mobile phase...; 关键词：CEFATHIAMIDINE Dibromoacetic acid impurities LC-MS

Development and Validation of a UPLC Method for the Determination of Docetaxel and Its Related Substances in Pharmaceutical Dosage Forms, an Antineoplastic Agent: 《American Journal of Analytical Chemistry》2024年第10期333-346,共14页Srinivasulu Kasa Sreenivas Pippalla Mopidevi Narasimha Naidu Dipak Goyal; A novel, simple, and sensitive Ultra Performance Liquid Chromatography (UPLC) method was developed and validated for the quantification of process-related impurities and degradants, as well as the assay of Docetaxel. ...; 关键词：UPLC Method Development VALIDATION DOCETAXEL IMPURITIES ICH

Crystal structure transformation and lattice impurities migration of quartz during chlorine roasting: 《International Journal of Mining Science and Technology》2024年第10期1465-1474,共10页Wenda Guo Haolong Lu Zhenyue Zhang Ling Jiang Hanjun Wu Defeng Liu Ruan Chi; provided by the National Natural Science Foundation of China(No.52374273);the China Postdoctoral Science Foundation Project(No.2023M731041)。; To investigate the effect of chlorine roasting on the migration and removal of trace elements in quartz lattice,firstly,an efficient pretreatment process,grinding–HCl washing–flotation–HF and HCl leaching,was used ...; 关键词：QUARTZ Purification Chlorine roasting Crystal structure Trace elements

Optimizing hydrogen evolution reaction:Computational screening of single metal atom impurities in 2D MXene Nb_(4)C_(3)O_(2): 《Frontiers of physics》2024年第5期109-116,共8页Željko Šljivančanin; supported by the Serbian Academy of Sciences and Arts under Grant No.F-18.; MXenes,a novel class of 2D transition metal carbides and nitrides,have recently emerged as a promising candidate in the quest for efficient catalysts for the hydrogen evolution reaction.To enhance the performance of 2...; 关键词：hydrogen evolution reaction MXenes DFT single-atom catalysts

Advancing drug safety and mitigating health concerns:High-resolution mass spectrometry in the levothyroxine case study: 《Journal of Pharmaceutical Analysis》2024年第9期1361-1371,共11页Hana Chmelařová Maria Carmen Catapano Jean-Christophe Garrigues FrantišekŠvec Lucie Nováková; supported by the project EFSA-CDN(Project No.:CZ.02.01/0.0/0.0/16_019/0000841)co-funded by ERDF.; Levothyroxine is a drug with a narrow therapeutic index.Changing the drug formulation composition or switching between pharmaceutical brands can alter the bioavailability,which can result in major health problems.Howe...; 关键词：LEVOTHYROXINE EXCIPIENTS IMPURITIES UHPLC-DIA-HRMS Drug safety

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