检索结果-南通市图书馆

Chemical Research in Chinese Universities 2015年第5期31卷 724-729页

作者： LIANG Fanghui wang Di MA pinyi wang Xinghua SONG Daqian YU Yong Department of Pharmacy Changchun Medical College Changchun 130031 P. R. China College of Chemistry Jilin University Changchun 130012 P. R. China College of Instrumentation & Electrical Engineering Jilin University Changchun 130061 P. R. China

Fluorescein-rhodamine 6G（Flu-Rh） was synthesized and used as the fluorescence probe for pH measurement based on fluorescence resonance energy transfer（FRET）. In the probe, fluorescein fluorophore and pH-sensitive rhodamine 6G hydrazide were used as FRET donor and acceptor, respectively. The values of acidity constant（pKa） and fluorescence quantum yield（Ф） of Flu-Rh were 3.71 and 0.72, respectively. The fluorescence efficiency of Flu-Rh remains almost constant when the pH value of the sample solution changed 10 times in a range of 4.78-7.03 continuously. The present probe is simple and easy-to-use for the pH measurement in acidic media.

关键词： Fluorescence resonance energy transfer(FRET) Ratiometric Fluorescein Rhodamine 6G pH

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

孙思邈与叶天士治疗水肿用药规律的比较研究

世界中医药 2020年第6期15卷 854-860页

作者：王品一樊炜静金潇付常庚邢彤原方王前杨宝钟北京中医药大学北京100029 北京中医药大学东方医院北京100078

目的:水肿患者多病情缠绵,中医在治疗水肿病方面存在独特优势,总结中医对此证的经验心得独具临床意义。方法:本次研究通过中医传承辅助平台系统,对孙思邈和叶天士治疗水肿的遣方用药进行统计,如药物剂量、使用频次、四气、五味等,对其... 详细信息

目的:水肿患者多病情缠绵,中医在治疗水肿病方面存在独特优势,总结中医对此证的经验心得独具临床意义。方法:本次研究通过中医传承辅助平台系统,对孙思邈和叶天士治疗水肿的遣方用药进行统计,如药物剂量、使用频次、四气、五味等,对其进行分析并比较两者之间的异同。结果:孙思邈水肿处方共86首,含中药154味;叶天士用方共91首,含中药136味,其中五味属性上孙、叶2人所用药物皆是辛、甘、苦味药为主,四气属性:二者使用寒药频次有显著不同,孙氏温药(44%)、寒药(31%),叶氏温药(48%)、寒药(22%);治法方面孙氏用利水法61次(45%)、温阳法23次(17%)、活血法13次(10%)、祛湿法10次(7%)、攻逐法29次(21%),叶氏用利水法57次(46%)、温阳35次(28%)、活血5次(4%)、祛湿26次(21%)、攻逐2次(2%),新方分析孙氏核心组合25对,叶氏核心组合12对。结论:二者对水肿核心病机存在不同认识,孙氏认为由五脏失利,水气泛溢,且多由肺起;叶氏认为此证本质上分为肿和胀,治在脾胃;用药规律方面孙氏常用“泻肺逐水”为法,代表药有葶苈子、杏仁、桑白皮、甘遂等,叶氏多用“温阳祛湿”为法,代表药有附子、干姜、桂枝、茯苓、豆蔻等;数据挖掘:推导出新方各11首,为水肿的进一步理解和治疗提供参考。

关键词：水肿用药规律中医传承辅助平台孙思邈叶天士

如意金黄散外敷预防PICC致静脉炎临床有效性Meta分析

在线全文

学校读者我要写书评

暂无评论

亚太传统医药 2019年第2期15卷 160-165页

作者：樊炜静付常庚李鹏王品一原方杨宝钟北京中医药大学东方医院北京100078

目的:系统评价如意金黄散外敷预防PICC致静脉炎的临床有效性。方法:计算机检索中国知网(CNKI)、维普中文期刊数据库(VIP)、万方数据知识服务平台、中国生物医学文献数据库(CBM)、Pubmed、科学引文索引(SCI)数据库、Cochrane Library,2... 详细信息

目的:系统评价如意金黄散外敷预防PICC致静脉炎的临床有效性。方法:计算机检索中国知网(CNKI)、维普中文期刊数据库(VIP)、万方数据知识服务平台、中国生物医学文献数据库(CBM)、Pubmed、科学引文索引(SCI)数据库、Cochrane Library,2位研究者对符合入选标准者采用Cochrane推荐的偏倚风险评估方法评价偏倚风险,提取资料,并应用Review Manager软件进行Meta分析和系统评价。结果:最终纳入14项研究,总病例数1496例,结果显示,如意金黄散外敷预防PICC致静脉炎与常规静脉炎护理方法相比较,静脉炎发生率更低,临床有效性更高,差异有统计学意义,[OR=0.18,95%CI(0.12,0.26),P<0.000 01];如意金黄散单独应用预防PICC致静脉炎与常规静脉炎护理方法相比较,差异有统计学意义,[OR=0.15,95%CI(0.08,0.26),P<0.000 01];如意金黄散联合常规治疗预防PICC致静脉炎与常规静脉炎护理方法相比较,差异有统计学意义,[OR=0.23,95%CI(0.13,0.42),P<0.000 01]。结论:如意金黄散外敷预防PICC致静脉炎,静脉炎发生率明显低于常规护理方法,临床有效性更高。但由于文献研究质量偏低,需要更多高质量、大样本、随机对照双盲临床试验提供高级别证据,以进一步验证如意金黄散外敷预防PICC致静脉炎的临床有效性。

关键词：如意金黄散预防 PICC 静脉炎 Meta

Genkwadane F-I,New Daphnane-type Diterpenes from the Flower Buds of Daphne genkwa *** *** Anti-tumor Activities via lnducing Apoptosis

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2020年第12期38卷 1600-1606页

作者： Xuewen Hou Jingjie Chen Xuefen Hou pinyi Gao Jinlin wang Shaojiang Song Lingzhi Li School of Traditional Chinese Materia Medico Key Laboratory of Structure-Based Drug Design and DiscoveryMinistry of EducationShenyang Pharmaceutical University103 Wenhua RoadShenyangLiaoning 110016China College o f Pharmaceutical and Biotechnology Engineering Institute of Functional MoleculesShenyang University of Chemical Technology11 StreetShenyang Economic and Technological Development ZoneShenyangLiaoning 110142China

of main observation and conclusion Genkwadane F-I(1-4),four new diterpenes,along with four known ones(5-8),were isolated from the flower buds of *** structures including absolute configurations of 1-4 were determined based on the analysis of NMR and ECD *** compounds were evaluated for their cytotoxicities against MCF-7 and Hep3B cell lines,among which compounds 3 and 4 showed significant *** 4 exhibited the most potent activity with IC50 values of 1.33μM against MCF-7,and the IC50 values of compound 3 against MCF-7 and Hep3B were 5.54μM and 8.73μM;*** studies by Hoechst 33258 staining and Annexin V/PI analysis demonstrated that compounds 3 and 4 could induce apoptosis to exhibit anti-tumor activities.

关键词： absolute conclusion compounds

Single-Molecule Confinement Induced Intrinsic Multi-Electron Redox-Activity to Enhance Supercapacitor Performance

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

Energy & Environmental Materials 2023年第4期6卷 227-238页

作者： Su Yang Meiling wang Yong Zhang pinyi He Wenhua Cong Chongji wang Qiankun Yang Xuguang Liu Tian wang Xianming Zhang Jiadong Zhou College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement(Ministry of Education) Beijing Key Lab of Nanophotonics&Ultrafine Optoelectronic Systemsand School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Materials Science and engineering Central South UniversityChangsha 410083China Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education (Taiyuan University of Technology)Taiyuan 030024China

Aggregation of polyoxometalates(POM)is largely responsible for the reduced performance of POM-based energy-storage *** address this challenge,here,the precise confinement of single Keggin-type POM molecule in a porous carbon(PC)of unimodal super-micropore(micro-PC)is *** precise single-molecule confinement enables sufficient activity center exposure and maximum electron-transfer from micro-PC to POM,which well stabilizes the electron-accepting molecules and thoroughly activates its inherent multi-electron *** particular,the redox-activities and electron-accepting properties of the confined POM molecule are revealed to be super-micropore pore size-dependent by experiment and spectroscopy as well as theoretical ***,the molecularly dispersed POM molecules confined steadily in the“cage”of micro-PC exhibit unprecedented large-negative-potential stability and multiple-peak redox-activity at an ultra-low loading of~11.4 wt%.As a result,the fabricated solid-state supercapacitor achieves a remarkable areal capacitance,ultrahigh energy and power density of 443 mF cm^(-2),0.12 mWh cm^(-2)and 21.1 mW cm^(-2),*** work establishes a novel strategy for the precise confinement of single POM molecule,providing a versatile approach to inducing the intrinsic activity of POMs for advanced energy-storage systems.

关键词： intrinsic redox-activity polyoxometalates single-molecule confinement supercapacitor

Aspen Hysys在糠醛精制汽提塔操作中的应用

在线全文

学校读者我要写书评

暂无评论

山东化工 2015年第19期44卷 94-96页

作者：窦福合聂海军王品一曾海张文翰徐鲁燕中国石油大学重质油国家重点实验室北京102249 中国石油辽河石化公司辽宁盘锦124022

化工流程模拟软件是化工设计和操作中的重要工具。通过模拟软件,能极大提高工作效率,降低设计和探索的成本。本文介绍了用Aspen Hysys流程模拟软件在指导糠醛精制汽提塔的操作,并取得了较好效果。

关键词： Aspen Hysys 流程模拟糠醛精制汽提塔

在线全文

学校读者我要写书评

暂无评论

BP神经网络在沥青延度预测上的应用

石油沥青 2016年第1期30卷 57-61页

作者：窦福合许志明王品一曾海徐鲁燕张永翰中国石油大学重质油国家重点实验室北京102249 中国石油辽河石化公司盘锦124022

在我国的沥青标准体系中,延度是一个重要指标。但是,目前对于延度的预测方法可用的很少。人工神经网络可以对输入和输出间复杂的关系进行关联,能对复杂的函数关系进行线性和非线性的拟合。该文用调合沥青原料四组分数据和调合比例计算... 详细信息

在我国的沥青标准体系中,延度是一个重要指标。但是,目前对于延度的预测方法可用的很少。人工神经网络可以对输入和输出间复杂的关系进行关联,能对复杂的函数关系进行线性和非线性的拟合。该文用调合沥青原料四组分数据和调合比例计算而来的四组分值作为输入,延度作为输出,在MATLAB上进行了数学建模,建立并训练BP神经网络,检验神经网络的性能优劣。结果表明:训练出来的BP神经网络对于调合汤青的延度具有较好的预测能力。

关键词：沥青 BP神经网络延度四组分沥青调合

Realization of solid-state red fluorescence and concentration-induced multicolor emission from N,B co-doped carbon dots

在线全文

学校读者我要写书评

暂无评论

Frontiers of Materials Science 2023年第2期17卷 121-132页

作者： Junli wang Jingxia Zheng pinyi He Qiang Li Yongzhen Yang Xuguang Liu Juanzhi Yan Yi Zhang Department of Materials and Chemical Engineering Taiyuan UniversityTaiyuan 030032China Key Laboratory of Interface Science and Engineering in Advanced Materials(Ministry of Education) Taiyuan University of TechnologyTaiyuan 030024China School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Department of Chemistry and Chemical Engineering Lyuliang UniversityLyuliang 033001China

As a new type of luminescent material,carbon dots(CDs)have attracted increased attention for their superior optical properties in recent ***,solidstate fluorescent CDs,especially with red emission,are still a major ***,CDs with solid-state red emission were synthesized by co-doping of N and B using the one-step microwave *** CD powder exhibits excitation-independent solid-state red fluorescence without any dispersion matrices,with optimum solid-state fluorescence wavelength of 623 *** hydrogen bonding interaction in CDs is helpful for solid-state fluorescence of *** IG/ID value of CDs reaches up to 3.49,suggesting their very high graphitization degree,which is responsible for their red *** addition,CDs show the concentration-induced multicolor emission,which is attributed to the decreased energy gap in the high concentrated CD *** exploit their concentration-dependent emission,CDs with changing ratio in matrices are applied as a color-converting layer on ultraviolet chip to fabricate multicolor light-emitting diodes with light coordinates of(0.33,0.38),(0.41,0.48),(0.49,0.44),and(0.67,0.33),which belong to green,yellow,orange,and red light,respectively.

关键词： carbon dot solid-state red fluorescence concentration-induced multicolor emission N,B co-doping

四位当代名医治疗早期下肢动脉硬化性闭塞症思想

在线全文

学校读者我要写书评

暂无评论

西部中医药 2023年第10期36卷 49-52页

作者：王前李沛瑾李光宗付常庚顾汉程樊炜静王品一原方杨宝钟北京中医药大学孙思邈医院陕西铜川727100 北京中医药大学东直门医院北京100700 北京中医药大学东方医院北京100078

整理奚九一、陈淑长、崔公让、庞鹤四位当代脉管病中西医名家治疗早期下肢动脉硬化性闭塞症的思想,以期指导临床诊疗。

关键词：动脉硬化性闭塞症脱疽治疗思想奚九一陈淑长崔公让庞鹤

Ultrasmall NiS_(2)Nanocrystals Embedded in Ordered Macroporous Graphenic Carbon Matrix for Efficiently Pseudocapacitive Sodium Storage

在线全文

学校读者我要写书评

暂无评论

Transactions of Tianjin University 2023年第2期29卷 89-100页

作者： Zhaozhao Liu Jiang wang Ran Bi pinyi Zhao Mengqian Wu Xinyu Liu Likun Yin Chengyang wang Mingming Chen Kemeng Ji Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Comprehensive Energy Research Center Science and Technology Research InstituteChina Three Gorges CorporationBeijing 100038China Institute for Materials Discovery University College LondonLondon WC1E 7JEUK Department of Chemistry University College LondonLondon WC1H 0AJUK Department of Materials Science Graduate School of EngineeringTohoku UniversitySendai 980-8579Japan

Sodium-ion hybrid capacitor(SIHC)is one of the most promising alternatives for large-scale energy storage due to its high energy and power densities,natural abundance,and low ***,overcoming the imbalance between slow Na^(+)reaction kinetics of battery-type anodes and rapid ion adsorption/desorption of capacitive cathodes is a significant ***,we propose the high-rate-performance NiS_(2)@OMGC anode material composed of monodispersed NiS_(2) nanocrystals(8.8±1.7 nm in size)and N,S-co-doped graphenic carbon(GC).The NiS_(2)@OMGC material has a three-dimensionally ordered macroporous(3DOM)morphology,and numerous NiS_(2) nanocrystals are uniformly embedded in GC,forming a core-shell structure in the local *** NiS_(2) nanocrystals and their nano-microstructure demonstrate high pseudocapacitive Na-storage capability and thus excellent rate performance(355.7 mAh/g at 20.0 A/g).A SIHC device fabricated using NiS_(2)@OMGC and commercial activated carbon(AC)cathode exhibits ultrahigh energy densities(197.4 Wh/kg at 398.8 W/kg)and power densities(43.9 kW/kg at 41.3 Wh/kg),together with a long life *** outcome exemplifies the rational architecture and composition design of this type of anode *** strategy can be extended to the design and synthesis of a wide range of high-performance electrode materials for energy storage applications.

关键词： Sodium-ion battery Sodium-ion hybrid capacitor Three-dimensionally ordered macroporous structure Graphenic carbon NiS_(2)nanocrystals