检索结果-南通市图书馆

Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei Xiao Qianqian Gu Haoyu li Mengyao li Yude wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator Ion diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

The Influence of Different Thawing Rates on the Mechanical Properties of the Cryopreserved Rabbit Arteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Biomedical Engineering(English Edition) 2003年第3期12卷 103-110页

作者： SHU Zhi-quan 1, HE li-qun 1, wang Pei-tao 1, DING Wei-ping 1, GAO Da-yong 1,2

The cryopreservation of rabbit arteries has been discussed by many researchers. But most of them focused on the cryoprotective agents and cooling process. The analysis of thawing process is not adequate. In this paper, we compared 4 convenient thawing methods and measured the mechanical properties of the cryopreserved arteries wall. The fresh arteries were also measured. From the data, we can see that the longitudinal and circumferential moduli and fracture stresses of the cryopreserved arteries were smaller than the data of fresh ones. The influence of warming rates on the moduli was not clear. But the longitudinal and circumferential fracture stresses of the cryopreserved arteries basically increased with the decrease of the thawing rates. The data of the arteries thawed in liquid nitrogen pre-cooled ice were the most similar to these of the fresh ones. So we can conclude that, in mechanics, gradually thawing can improve the cryopreservation of the arteries,and among the 4 thawing methods, the liquid nitrogen pre-cooled ice thawing method maybe is the best selection.

关键词： cryopreservation artery mechanical properties thawing rates

冲击毁伤载荷作用下新型舰船舱壁结构型式研究

在线全文

学校读者我要写书评

暂无评论

舰船科学技术 2017年第6期39卷 6-11页

作者：尹群李舒王珂江苏科技大学船舶与海洋工程学院江苏镇江212003

本文对高速破片与冲击波载荷联合作用下典型舰船舱壁结构的动态响应过程进行数值模拟研究。基于结构吸能和破片平均剩余速度的评判标准,对比分析3种新型夹芯板双层舱壁(I型、X型、V型)抗冲击毁伤特性。研究结果表明,在相同高速破片与冲... 详细信息

本文对高速破片与冲击波载荷联合作用下典型舰船舱壁结构的动态响应过程进行数值模拟研究。基于结构吸能和破片平均剩余速度的评判标准,对比分析3种新型夹芯板双层舱壁(I型、X型、V型)抗冲击毁伤特性。研究结果表明,在相同高速破片与冲击波载荷联合作用下,破片穿透V型夹芯板双层舱壁结构的平均剩余速度最小,并且V型夹芯板结构吸能最多;3种新型夹芯板舱壁结构抗冲击性能均强于典型单层舱壁结构。

关键词：联合作用双层舱壁动态响应新型结构

A 14-year multi-institutional collaborative study of Chinese pelvic floor surgical procedures related to pelvic organ prolapse

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2021年第2期134卷 200-205页

作者： Zhi-Jing Sun Xiu-Qi wang Jing-He Lang Tao Xu Yong-Xian Lu Ke-Qin Hua Jin-Song Han Huai-Fang li Xiao-Wen Tong Ping wang Jian-liu wang Xin Yang Xiang-Hua Huang Pei-Shu liu Yan-Feng Song Hang-Mei Jin Jing-Yan Xie Lu-Wen wang Qing-Kai Wu Jian Gong Yan wang li-qun wang Zhao-Ai li Hui-Cheng Xu Zhi-Jun Xia li-Na Gu Qing liu Lan Zhu Department of Obstetrics and Gynecology Peking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijing 100730China Department of Obstetrics and Gynecology Graduate School of Peking Union Medical CollegeChinese Academy of Medical SciencesBeijing 100730China Department of Epidemiology and Biostatistics Institute of Basic Medical SciencesChinese Academy of Medical Sciences and School of Basic MedicinePeking Union Medical CollegeBeijing 100730China Department of Obstetrics and Gynecology The Fourth Medical CenterChinese PLA General HospitalBeijing 100048China Department of Gynecology Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200433China Department of Obstetrics and Gynecology Peking University Third HospitalBeijing 100083China department of Obstetrics and Gynecology Tongji HospitalTongji UniversityShanghai 200065China Department of Obstetrics and Gynecology West China Second HospitalSichuan UniversityKey Laboratory of Birth Defects and Related Diseases of Women and ChildrenMinistry of EducationChengduSichuan 061110China Department of Obstetrics and Gynecology Peking University People’s HospitalBeijing 100044China Department of Obstetrics and Gynecology The Second Hospital of Hebei Medical UniversityShijiazhuangHebei 075100China Department of Obstetrics and Gynecology Qilu Hospital of Shandong UniversityJinanShandong 250002China Department of Obstetrics and Gynecology 900 Hospital of the Joint Logistics TeamFuzhouFujian 350025China Department of Obstetrics and Gynecology Women’s HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310000China Department of Obstetrics and Gynecology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China Department of Obstetrics and Gynecology The Third Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450000China Department of Obstetrics and Gynecology Shanghai Jiao Tong University Sixth HospitalShanghai 200300China Department of Gyn

Background:It has been a global trend that increasing complications related to pelvic floor surgeries have been reported over *** current study aimed to outline the development of Chinese pelvic floor surgeries related to pelvic organ prolapse(POP)over the past 14 years and investigate the potential influence of enhanced monitoring conducted by the Chinese Association of Urogynecology since ***:A total of 44,594 women with POP who underwent pelvic floor surgeries between October 1,2004 and September 30,2018 were included from 22 tertiary academic medical *** data were reported voluntarily and obtained from a *** compared the proportion of each procedure in the 7 years before and 7 years after September 30,*** data were analyzed by performing Z test(one-sided).Results:The number of different procedures during October 1,2011-September 30,2018 was more than twice that during October 1,2004-September 30,*** pelvic floor surgeries related to POP,the rate of synthetic mesh procedures increased from 38.1%(5298/13,906)during October 1,2004-September 30,2011 to 46.0%(14,107/30,688)during October 1,2011-September 30,2018,whereas the rate of non-mesh procedures decreased from 61.9%(8608/13,906)to 54.0%(16,581/30,688)(Z=15.53,P<0.001).Regarding synthetic mesh surgeries related to POP,the rates of transvaginal placement of surgical mesh(TVM)procedures decreased from 94.1%(4983/5298)to 82.2%(11,603/14,107)(Z=20.79,P<0.001),but the rate of laparoscopic sacrocolpopexy(LSC)procedures increased from 5.9%(315/5298)to 17.8%(2504/14,107).Conclusions:The rate of synthetic mesh procedures increased while that of non-mesh procedures decreased *** rate of TVM procedures decreased while the rate of LSC procedures increased *** registration number:NCT03620565,https://***.

关键词： Laparoscopic sacrocolpopexy Pelvic organ prolapse Synthetic mesh Transvaginal placement of surgical mesh

载血红蛋白纳米胶束的制备及蛋白封装行为研究

在线全文

学校读者我要写书评

暂无评论

高分子学报 2015年第5期25卷 535-541页

作者：孙芬芬林辉涂克华王红军王利群浙江大学高分子科学与工程学系杭州310027 浙江大学医学院附属邵逸夫医院杭州310016 浙江大学教育部高分子合成与功能构造重点实验室杭州310027

通过原子转移自由基聚合(ATRP)制备了两亲性嵌段共聚物聚乙二醇-聚甲基丙烯酸缩水甘油酯PEG-b-P(GMA)45,利用1-(3-氨基丙基)咪唑(API)与GMA上的环氧基发生开环反应,合成了聚乙二醇-聚(咪唑丙基-1-胺-甲基丙烯酸羟丙酯)PEG-P(GMA-API)45... 详细信息

通过原子转移自由基聚合(ATRP)制备了两亲性嵌段共聚物聚乙二醇-聚甲基丙烯酸缩水甘油酯PEG-b-P(GMA)45,利用1-(3-氨基丙基)咪唑(API)与GMA上的环氧基发生开环反应,合成了聚乙二醇-聚(咪唑丙基-1-胺-甲基丙烯酸羟丙酯)PEG-P(GMA-API)45.研究表明,该聚合物可以直接在水中自组装形成均匀的球形纳米胶束,粒径约为40 nm.由于咪唑基的p H响应性,胶束表面在p H从4增大到9的范围内均带正电荷,p H 7.4时共聚物可以与血红蛋白产生较强的静电作用和氢键作用,达到包载血红蛋白的目的.同时还研究了聚合物对不同比例血红蛋白的包封率,当聚合物与血红蛋白的质量比为1∶1时包封率最高,为32.4wt%.UV-Vis显示包封后的血红蛋白在不同气体结合状态的特征吸收峰与自由血红蛋白差别不大,表明载血红蛋白纳米胶束具有良好的气体运输能力,PEG-P(GMA-API)45纳米胶束将有可能用于新型的人工氧载体.

关键词： ATRP 纳米胶束咪唑血红蛋白人工氧载体

基于FPGA的高精度数字程控直流变换器设计

在线全文

学校读者我要写书评

暂无评论

电子技术应用 2017年第11期43卷 139-142,146页

作者：张根苗李斌王群王俊中国电子科技集团公司第四十一研究所电子信息测试技术安徽省重点实验室安徽蚌埠233006

精密仪器的快速发展对直流变换器品质提出愈来愈高的要求。为了获得稳定高性能直流输出,提出一种以FPGA为核心的数字程控直流变换器。介绍了该变换器的总体方案,给出主要硬件电路和软件设计。实验结果表明,该变换器具有输出精度高、纹... 详细信息

精密仪器的快速发展对直流变换器品质提出愈来愈高的要求。为了获得稳定高性能直流输出,提出一种以FPGA为核心的数字程控直流变换器。介绍了该变换器的总体方案,给出主要硬件电路和软件设计。实验结果表明,该变换器具有输出精度高、纹波小、稳定性好和可靠性高等特点,能够满足电子测量领域的要求。

关键词：变换器 FPGA 精度电子测量

Effects of Astragalus polysaccharide on immune function in B16 melanoma mice

在线全文

学校读者我要写书评

暂无评论

TMR Integrative Medicine 2021年第12期5卷 1-6页

作者： Fang-Hua Wu Kui Chen De-Kun Zhang Chao Gong Jiang-Yue Yu Shen-Zhou Huang Chen-Xin Huang li-qun wang Department of General Surgery Fujian Medical University Affiliated Fuzhou First HospitalFuzhou 350009China

Objective:To examine the effects of Astragalus polysaccharide on immune function in B16 melanoma ***:Forty male C57BL/6 mice were divided equally into a control group,model group,Astragalus polysaccharide low-dose group,and Astragalus polysaccharide high-dose group,with 10 mice per group.B16 cells were used to develop a mouse model of *** B16 engraftment,40 mg/kg and 80 mg/kg Astragalus polysaccharide was administered by gavage every day to the Astragalus polysaccharide low-dose group and Astragalus polysaccharide high-dose group,*** index,thymic index,tumor growth curves,and tumor inhibition rates were *** cytometry was used to measure proportions of peripheral blood T lymphocyte *** and eosin staining was used to examine histopathological changes in *** double staining was used to identify myeloid-derived suppressor cells in tumor ***:In the Astragalus polysaccharide high-dose group,splenic and thymic indices were significantly increased and tumor growth was inhibited in melanoma *** cytometry demonstrated increased CD4^(+)and CD4^(+)/CD8^(+)T-cell ratios in the high-dose Astragalus polysaccharide *** staining demonstrated significantly decreased numbers of tumor cells among mice with melanoma in the high-dose Astragalus polysaccharide *** double staining demonstrated significantly decreased numbers of myeloid-derived suppressor cells in tumor tissues in the high-dose Astragalus polysaccharide ***:Astragalus polysaccharide inhibits tumor growth,increases splenic and thymic indices,increases CD4^(+)and CD4^(+)/CD8^(+)T-cell ratios,and decreases myeloid-derived suppressor cell numbers in melanoma *** results indicate Astragalus polysaccharide may enhance immune function resulting in inhibition of tumorigenesis and tumor progression.

关键词： Melanoma Astragalus polysaccharide Tumor Immune function

Characterization of Heat Shock Protein 70 in the redclaw crayfish（Cherax quadricarinatus）:Evidence for its Role in the Regulation of Spermatogenesis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Characterization of Heat Shock Protein 70 in the redclaw cra...

Induced Activity of Nitrate Reductase by Nitrate and Cloning of Nitrate Reductase Gene

中国甲壳动物学会第十一届年会暨学术研讨会

作者： Di-An Fang~*,Wei-Wei li,qun wang School of life Science,East China Normal University,Shanghai 200062,China

＜正＞Heat shock protein 70（HSP70） is part of a superfamily of molecular chaperones,primarily expresses proteins for numerous biological processes in *** the present study,HSP70 in the redclaw crayfish（Cherax quadr...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Induced Activity of Nitrate Reductase by Nitrate and Cloning...