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化学机械抛光液的研究现状

化学世界 2024年第1期65卷 60-66页

作者：王东哲张恒飞付玉刘茂举庄锐蔡颖辉黄河三角洲京博化工研究院有限公司山东滨州256600 山东大学(京博)高端化工与新材料研究院山东济南250100

化学机械抛光(CMP)是一种化学腐蚀和机械磨削协同作用的超精密加工技术。化学机械抛光液是化学机械抛光技术中关键的一部分,对材料的全局平坦化处理起到了至关重要的作用。综述了化学机械抛光液中各组分对抛光性能的影响研究。

关键词：化学机械抛光液组分影响研究

Living Polymerization of 1,3-Butadiene Catalyzed by Half-titanocene Complex Bearing Dibenzhydryl-substituted Aryloxide Ligand

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Chinese Journal of Polymer Science 2017年第6期35卷 721-727页

作者： Bo Dong rui zhuang Chun-yu Zhang Wen-jie Zheng He-xin Zhang Yan-ming Hu 孙广平张学全 College of Materials Science and Engineering Jilin University Key Laboratory of Synthetic Rubber Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Half-titanocene complexes bearing dibenzhydryl-substituted aryloxide ligands （2a-2d） were prepared. Among them, 2e adopted a three-legged distorted tetrahedral geometry evidenced by X-ray crystallography. The poly-1,3-butadiene with high molecular weight and narrow molecular weight distribution was obtained by using these complexes as the catalysts activated with methylaluminoxane （MAO）. The catalytic activities of the complexes depended on their structures. The Ti-- O--C bond in the complexes with large angle afforded them with higher activity, while Cp＊-based complexes exhibited lower activities than the Cp-based analogues. The activity of complex increased with increasing the polymerization temperature while the selectivity remained no change, indicating the high thermal stability. Furthermore, the polymerization of 1,3-butadiene catalyzed by 2a/MAO at 0 ℃ has been found in a living fashion.

关键词： Half-titanocene complexes 1,3-Butadiene Thermal stability Living polymerization

母乳喂养促进行动小组协同数字故事干预对母乳喂养的影响

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护理学杂志 2024年第11期39卷 5-8页

作者：刘娜李宸庄蕊李昭廖春丽刘鑫陈梦张灿张姝于晓宁郭羽中国医学科学院北京协和医院国际医疗部产科病房北京100730

目的提高6个月内婴儿母乳喂养率,促进母婴健康。方法方便抽样选取120例住院分娩产妇,按时间段分为对照组与干预组各60例;对照组实施常规产科护理,干预组成立母乳喂养促进行动小组联合数字故事予以干预,分别于出院时至产后6个月评价干预... 详细信息

目的提高6个月内婴儿母乳喂养率,促进母婴健康。方法方便抽样选取120例住院分娩产妇,按时间段分为对照组与干预组各60例;对照组实施常规产科护理,干预组成立母乳喂养促进行动小组联合数字故事予以干预,分别于出院时至产后6个月评价干预效果。结果对照组与干预组分别有47例、51例完成研究。干预组产后6个月母乳喂养自信心得分、母乳喂养率显著高于对照组,出院时护理满意度显著高于对照组(均P<0.05)。结论母乳喂养促进行动小组协同数字故事干预可有效提高母乳喂养率,有利于促进母婴健康。

关键词：产妇新生儿母乳喂养促进行动小组数字故事短视频健康教育满意度

Determination of 6258-70,a new semi-synthetic taxane,in rat plasma and tissues:Application to the pharmacokinetics and tissue distribution study

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Journal of Pharmaceutical Analysis 2016年第4期6卷 219-225页

作者： Simin Zhao Yuanyuan Zhang Ping Ju Liqiang Gu rui zhuang Longshan Zhao Xing Tang Kaishun Bi Xiaohui Chen School of Pharmacy Shenyang Pharmaceutical University

Cancer is the leading cause of death all over the *** the chemotherapy drugs,taxanes play an important role in cancer treatment.6258-70 is a new semi-synthetic taxane which has a broad spectrum of antitumor activity.A fast and reliable high performance liquid chromatography-tandem mass spectrometry（HPLC-MS/MS） method was developed for quantification of 6258-70 in rat plasma and tissues in this *** extraction by liquid-liquid extraction method with methyl tert-butyl ether,the samples were separated on a Kinetex C_（18） column（50 mm × 2.1 mm,2.6 μm,Phenomenex,USA） within3 *** method was fully validated with the matrix effect between 87.7%and 99.5%and the recovery ranging from 80.3%to 90.1%.The intra- and inter-day precisions were less than 9.5%and the accuracy ranged from-3.8%to 6.5%.The reliable method was successfully applied to the pharmacokinetics and tissue distribution studies of 6258-70 after intravenous administration in *** pharmacokinetic results indicated that the pharmacokinetic behavior of 6258-70 in rats was in accordance with linear features within tested dosage of 1 to 4 mg/kg,and there was no significant difference between the two *** tissue distribution study showed that 6258-70 had an effective penetration,spread widely and rapidly and could cross blood-brain *** results of pharmacokinetics and tissue distribution may provide a guide for future study.

关键词： 6258-70 HPLC-MS/MS Pharmacokinetics Tissue distribution

Glycyrrhizin-Induced Pseudohyperaldosteronism:A Case Report

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Chinese Journal of Integrative Medicine 2022年第7期28卷 644-649页

作者： FAN Zong-jing LIU Jin-min LI Xing-xing CUI Jie GUO Bin LIN Quan zhuang rui WU Zheng-bo WU Yang Department of Cardiology Dongfang HospitalBeijing University of Chinese MedicineBeijing 100078China Department of Graduate School Beijing University of Chinese MedicineBeijing 100029China Department of Cardiology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China

Licorice,also known as Radix Glycyrrhizae,is a natural sweetener and widely used as a drug,and it has been considered to be a healthy natural substance with few side effects.;Pseudo hyperaldosteronism(PsHA),which is characterized by hypertension,hypokalemia and alkalosis,should be considered when licorice or its related products are excessively ingested.

关键词： effects. ster ism

Qishen Taohong Granule as Adjuvant Therapy for Improving Cardiac Function and Quality of Life in Patients with Chronic Heart Failure:A Randomized Controlled Trial

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Chinese Journal of Integrative Medicine 2022年第1期28卷 12-19页

作者： LI Xing-xing WU Yang FAN Zong-jing CUI Jie LI Dong LIN Quan zhuang rui YAN Rong-kun LIN Qian LI Yan Department of Graduate School Beijing University of Chinese MedicineBeijing(100029)China Department of Cardiology Dongfang HospitalBeijing University of Chinese MedicineBeijing(100078)China Department of Cardiology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing(100091)China Department of Cardiology Dongzhimen HospitalBeijing University of Chinese MedicineBeijing(100700)China

Objective:To confirm the improvement of cardiac function and quality of life(QoL)in patients with chronic heart failure(CHF)via Chinese medicine(CM)Qishen Taohong Granule(QTG).Methods:This study was a single-center,prospective,randomized,controlled clinical ***-six patients from 27 to 84 years old diagnosed with CHF New York Heart Association(NYHA)classⅡorⅢin stage C were enrolled and randomly assigned at a 1:1 ratio to receive QTG or trimetazidine(TMZ),in addition to their standard medications for the treatment of *** study period was 4 *** primary outcomes included cardiac function evaluated by NYHA classification and left ventricular ejection fraction(LVEF),as well as QoL evaluated by CHF Integrated Chinese and Western Medicine Survival Scale(CHFQLS).The secondary outcomes included 6-min walking test(6 MWT),CM syndrome score,symptom and sign scores and N-terminal pro-B-type natriuretic peptide level(NT-proBNP).All indices were measured at baseline and the end of the ***:At the 4-week follow-up period,the effective rate according to NYHA classification in the QTG group was better than that in the TMZ group(74.29%vs.54.29%,P0.05).The CHFQLS scores improved by 13.82±6.04 vs.7.49±2.28 in the QTG and TMZ groups,respectively(P<0.05).Subgroup analysis of the CHFQLS results showed that physiological function,role limitation and vitality were significantly higher in the QTG group than in the TMZ group(15.76±7.85 vs.7.40±3.36,P<0.05;16.00±8.35 vs.10.53±4.64,P<0.05;15.31±8.09 vs.7.89±4.60,P<0.05).Compared with TMZ group,treatment with QTG also demonstrated superior performance with respect to 6 MWT,CM syndrome,shortness of breath,fatigue,gasping,general edema and NT-proBNP *** significant adverse reactions or adverse cardiac events occurred during treatment in either ***:In addition to conventional treatments,the use of QTG a

关键词： chronic heart failure Chinese medicine Qishen Taohong Granule cardiac function quality of life

Synthesis and Characterization of Bi-functional Photorefractive Polymers with High Molecular Weight and Low Glass Transition Temperature

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Chinese Journal of Polymer Science 2014年第5期32卷 577-586页

作者：陈姝帆孙连来 Xuan Luo Xiao-dong Jiang Wei-dong Wu Yu Fang Chuan-qun Huang rui-zhuang Yang Qing-jun Zhang Research Center of Laser Fusion China Academy of Engineering Physics

Carbazole-based bi-functional photorefractive polyacrylates were prepared via free radical polymerization and post-azo-coupling reaction. The structure of polymers was characterized by Fourier transform infrared spectroscopy （FTIR） and proton nuclear magnetic resonance （^1H-NMR） spectroscopy. The differential scanning calorimetry （DSC） and the thermal gravimetric analysis （TGA） were used to characterize the thermal property of polymers. The results indicate that though the glass transition temperature （Tg） of polymers increases with increasing the ratio of NLO groups, the polymers with different ratios of NLO groups still all show low glass transition temperatures around 60 ℃, and good thermal stability, which are favorable to the practical application of these polymers. The gel permeation chromatographic （GPC） result indicates that these polymers all have high-molecular-weight which is favorable to the long term stability of the material. Further, these polymers have good solubility in chloroform solvent, and the solutions can easily be fabricated into optically transparent films. Gain coefficients of 75 cm^-1, 185 cm^-1 and 66 cm^-1 can be observed at zero external electric field without any addition agent or pre-poling for polymers P-2, P-3 and P-4 respectively. The different contents of NLO groups result in the different properties of polymers P-2, P-3 and P-4.

关键词： Photorefractive Polyacrylate Post-azo-coupling reaction High molecular weight Low Tg.

A general and facile calcination method to synthesize single-site catalysts for highly efficient electrochemical CO_(2) reduction

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Nano Research 2024年第5期17卷 3895-3901页

作者： rui Sui Bingyan Wang Yongsheng Wang Jiajing Pei Wei Zhu Wenxing Chen Chunhui Li Ailing Sun Zhongbin zhuang Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing 100084China College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China State Key Lab of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

The electrochemical CO_(2) reduction reaction(CO_(2)RR)has received widespread attention as a promising method for producing sustainable chemicals and mitigating the global ***,we demonstrate a general and facile synthetic route for the metal-nitrogen-carbon(M-N-C)type catalyst by simply calcinating metal acetate and urea with commercial carbon black,which have potential application in CO_(2)*** synthesized Ni-NC-600 catalyst has the structure of single Ni atom coordinated with one N atom and three C atoms(Ni-N_(1)C_(3)),which is suggested by X-ray absorption *** Ni-NC-600 catalyst exhibits high CO_(2)RR catalytic performance and a high CO Faraday efficiency above 98%in a wide potential range from-0.7 to-1.3 V(*** hydrogen electrode(RHE)),superior to most of the reported Ni-N-C *** work has developed a facile strategy to synthesize high performance CO_(2)RR catalyst.

关键词： nickel single atom catalyst CO_(2)reduction reaction CO production electrocatalyst

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石油进口持续增长对我国经济安全的影响

世界经济研究 2005年第6期 16-22页

作者：庄芮对外经济贸易大学国际经济研究院

近年来,我国石油进口持续增长,且增势迅猛,2000-2004年的年均石油进口量已是1995-1999年年均进口量的两倍多。在总体增长态势中,石油进口还突出表现为三个特点:一是原油进口成为带动我国石油进口的主导力量;二是原油进口主要来自中东、... 详细信息

近年来,我国石油进口持续增长,且增势迅猛,2000-2004年的年均石油进口量已是1995-1999年年均进口量的两倍多。在总体增长态势中,石油进口还突出表现为三个特点:一是原油进口成为带动我国石油进口的主导力量;二是原油进口主要来自中东、非洲和亚太;三是成品油进口增势平稳,地区来源集中于亚太。从发展趋势看,由于国内供需缺口将不断加大,所以未来我国石油进口还将继续保持增势。石油进口持续增长的现状与趋势,将对我国经济安全产生如下影响:第一, 石油进口依存度上升、自给率下降,将降低我国能源安全等级;第二,国际油价波动更易通过传递效应影响国内产业和宏观经济发展;第三,将进一步加大我国国际收支的压力和风险。

关键词：石油进口现状发展趋势我国经济安全