检索结果-南通市图书馆

Controllable Silver Plating on Silica for Surface-enhanced Raman Scattering

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2011年第4期27卷 683-687页

作者： CHEN Lei han xiao-xia YANG Jing-xiu ZHOU Ji LU Zhi-cheng SONG Wei ZHAO Bing XU Wei-qing OZAKI Yukihiro State Key Laboratory of Supramolecular Structure and Materials Jilin University Changchun 130012 P. R. China Department of Chemistry and Research Center for Single Molecule Spectroscopy School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan

We proposed a facile and rapid method for preparing silica-silver core-shell（SSCS） substrates to use Ag electroless plating on SiO2@Au-seed ***-Vis-NIR absorption spectrometer and SEM were employed to monitor the reaction process of the formation of Ag on the surfaces of silica beads,and the optical resonance of the substrate could shift from visible to NIR *** has been found that surface-enhanced Raman scattering（SERS） enhancement changes with the electroless plating time and the SSCS substrate with the plating time of 90 s（90SSCS） shows the strongest SERS response under the laser excitation at 514.5 *** collected over multiple spots and substrate of rhodamine 6G（R6G） resulted in a relative standard deviation（RSD） of 9.75%.The calculated enhancement factor（EF） was approximately 105 ＂*** substrate exhibits high SERS performance,which is due to electromagnetic SERS enhancement with additional localization field within closely packed Ag nanoparticles decorated on the SiO2 *** this substrate presents tunable and broad localized surface plasmon resonance（LSPR）,so this method may open a new way for SERS studies with other laser excitation.

关键词： SiO2 nanoparticle Au seed Ag nanoparticle Surface-enhanced Raman scattering(SERS)

Correlation between crowdedness in emergency departments and anxiety in Chinese patients

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第13期8卷 2802-2816页

作者： Shuang Wang Jun-Yi Gao xiang Li Yu Wu xiao-xia Huo Chao-xia han Meng-Jie Kang Hong Sun Bao-Lan Ge Yu Liu Ying-Qing Liu Jian-Ping Zhou Zhen Wang Department of Emergency Medicine Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Department of Cardiology Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Emergency Intensive Care Unit Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Department of Orthopedic Surgery Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Department of Emergency Medicine Peking University People’s HospitalBeijing 100044China Department of Emergency Medicine Peking University Third HospitalBeijing 100191China Department of Emergency Medicine Chinese PLA General HospitalBeijing 100853China Department of Emergency Medicine Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Department of Emergency Medicine Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

BACKGROUND Emergency department(ED)overcrowding is a severe health care concern,while anxiety and depression rates among ED patients have been reported to be substantially higher compared to the general *** hypothesized that anxiety due to over crowdedness may lead to adverse events in *** To investigate correlations between crowdedness in EDs and anxiety of patients and nurses,and to identify factors affecting their *** In this prospective observational study,a total 43 nurses and 389 emergency patients from two tier III hospitals located in Beijing were included from January 2016 to August *** were grouped into inpatients when they were hospitalized after diagnoses,or into outpatients when they were discharged after *** State Trait Anxiety Inventory(STAI Form Y)questionnaire was used to investigate patient and nurse anxieties,while crowdedness of EDs was evaluated with the National Emergency Department Over Crowding *** The present results revealed that state anxiety scores(49.50±6.00 vs 50.80±2.80,P=0.005)and trait anxiety scores(45.40±5.70 vs 46.80±2.70,P=0.002)between inpatients(n=173)and outpatients(n=216)were significantly different,while the state anxiety of nurses(44.70±5.80)was different from those of both patient *** linear regression analysis demonstrated that multiple factors,including crowdedness in the ED,were associated with state and trait anxieties for both inpatients and *** addition,there was an interaction between state anxiety and trait ***,multivariable regression analysis showed that while overcrowding in the ED did not directly correlate with patients’and nurses’anxiety levels,the factors that did correlate with state and trait anxieties of inpatients were related to *** factors included waiting time in the ED,the number of patients treated,and the number of nurses in the ED,whereas for nurses,only state and trait anxieties correlat

关键词： Emergency department Overcrowding State anxiety Trait anxiety Anxiety Prospective studies

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

求解约束优化问题的混沌类电磁算法

电子科技大学学报 2014年第2期43卷 278-281页

作者：韩丽霞中国矿业大学计算机科学与技术学院江苏徐州221116

针对约束优化问题,提出了基于混沌优化的一种新的类电磁机制算法。采用多目标优化的约束处理技术,将约束优化问题转化为无约束的双目标优化模型来求解;对于转化后的新模型,设计粒子的电荷和粒子间的受力公式。同时,为了加快算法的收敛速... 详细信息

针对约束优化问题,提出了基于混沌优化的一种新的类电磁机制算法。采用多目标优化的约束处理技术,将约束优化问题转化为无约束的双目标优化模型来求解;对于转化后的新模型,设计粒子的电荷和粒子间的受力公式。同时,为了加快算法的收敛速度,结合混沌优化改进种群中的粒子。采用标准的Benchmark函数对新类电磁机制算法的性能进行了仿真测试,并将测试结果与已有算法的结果进行比较,结果表明,新算法能够快速找到问题的全局最优解或近似最优解,是一种非常有竞争力的优化算法。

关键词：混沌优化电荷约束优化问题类电磁算法

Potential Value of Datura stramonium Agglutinin-recognized Glycopatterns in Urinary Protein on Differential Diagnosis of Diabetic Nephropathy and Nondiabetic Renal Disease

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2018年第2期131卷 180-187页

作者： xiao-Li Yang han-Jie Yu han-Yu Zhu Ying Zheng Qiu-xia han Guang-Yan Cai xiang-Mei Chen 'Department of Nephrology Chinese People's Liberation Army General Hospital Chinese People's Liberation Army Institute of NephrologyState Key Laboratory of Kidney Diseases (2011DAVO0088) National Clinical Research Center for Kidney Diseases Beijing Key Laboratory of Kidney Diseases Beijing 100853 China Laboratory for Functional Glycomics College of I'ifeSciences Northwest University Xi'an Shaanxi 710069 China Department of Nephrology The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan 450052 China

Background： Diabetic nephropathy （DN） is the most common and serious microvascular complication of diabetes. To date, the gold standard for identifying DN and nondiabetic renal disease （NDRD） is a renal biopsy; however, there is currently no reliable diagnostic marker to identify DN and NDRD in a noninvasive manner. This study aimed to investigate the different glycopatterns in urine specimens of DN patients and NDRD patients for a differential diagnosis. Methods： In total, 19 DN patients and 18 NDRD patients who underwent renal biopsies between March 2015 and March 2016 at the Chinese People＇s Liberation Army General Hospital were enrolled in this study. A lectin microarray was used to investigate the glycopatterns in the urinary protein of the 37 patients. Ratio analysis and one-way analysis of variance were used to screen altered glycopatterns. Then, the altered glycopatterns between the DN and NDRD groups were verified by a urinary protein microarray among another 32 patients （15 with DN and 17 with NDRD）, and receiver operating characteristic （ROC） curve analysis was used to determine the diagnostic value of the altered glycopatterns in differentiating DN and NDRD. Finally, lectin blotting was used to evaluate the altered glycosylation in protein level. Results： The result of lectin microarrays revealed that the relative abundance of the （13-1,4）-linked N-acetyI-D-glucosamine （GlcNAc） recognized by lectin Datura stramonium agglutinin （DSA） was significantly higher in urinary protein in DN patients than that in NDRD patients （fold change 〉1.50, P 〈 0.001）. Subsequently, the results of urinary protein microarrays were consistent with lectin microarrays （P 〈 0.05）. Furthermore, the ROC curve showed that glycopatterns could effectively distinguish DN from NDRD patients （area under the ROC curve = 0.94, P 〈 0.001）. DSA lectin blotting showed that glycoproteins, with a molecular weight of approximately 50,000, demonstrated a difference in urine samples between DN pat

关键词： Diabetic Nephropathy: Glycopattern NondiabeticRenal Disease, Urinary Protein

在线全文

学校读者我要写书评

暂无评论

加快我国服务业自主创新的公共政策选择

中国软科学 2011年第11期 21-28页

作者：韩霞北京航空航天大学公共管理学院北京100191

在大力发展服务经济、建设创新型国家的背景下,服务业创新被提升到一个新的战略高度。在服务业创新过程中,公共政策扮演着不可或缺的角色。为此,要加大对服务业创新的科技投入力度,推动服务领域创新平台建设;发挥财政资金的引领与导向作... 详细信息

在大力发展服务经济、建设创新型国家的背景下,服务业创新被提升到一个新的战略高度。在服务业创新过程中,公共政策扮演着不可或缺的角色。为此,要加大对服务业创新的科技投入力度,推动服务领域创新平台建设;发挥财政资金的引领与导向作用,强化税收政策对创新的激励效应;不断创新服务业的投融资方式,完善服务业投融资支持体系;加强服务领域创新人才培养,保障创新人才的有效供给。

关键词：服务业自主创新公共政策

在线全文

学校读者我要写书评

暂无评论

中国古代审计思想演进评述

审计研究 2018年第6期 10-15,24页

作者：夏寒南京审计大学政府审计学院 211815

通过对中国古代审计制度和相关文献的梳理,可以看出古人的审计思想随着历史环境的变化而发展。先秦至秦汉时期,为了维护君主专制的统治,确立了以账簿为基础对官员开展审计的制度,这一时期的审计思想主要集中在审计动因、审计目标、审计... 详细信息

通过对中国古代审计制度和相关文献的梳理,可以看出古人的审计思想随着历史环境的变化而发展。先秦至秦汉时期,为了维护君主专制的统治,确立了以账簿为基础对官员开展审计的制度,这一时期的审计思想主要集中在审计动因、审计目标、审计对象、审计依据等方面。隋唐时期出现了独立专职的审计机构,其审计思想的发展主要体现在审计机构、审计人员方面。宋代至明清时期审计的方式方法不断完善,强调账证实相符,注重详查抽查的结合,同时开始重视审计建议的提出,这一时期的审计思想主要体现在审计方式方法、审计作用方面。古代审计思想不断传承发展,逐渐形成了相对完善的审计制度思想体系,成为古代思想文化重要的组成部分。

关键词：古代审计审计思想审计监督财政监督

创业团队异质性对科技型新创企业绩效的影响——一个双调节模型

在线全文

学校读者我要写书评

暂无评论

科技进步与对策 2018年第13期35卷 145-152页

作者：夏晗中南财经政法大学工商管理学院湖北武汉430073 黄淮学院经济与管理学院河南驻马店463000

创业团队知识多样性和社会关系网络会对科技型新创企业技术创新产生较大影响,进而影响其成长。基于已有的创业团队异质性研究主要是借鉴高管团队异质性的研究结论,结合资源基础理论和社会交换理论,研究了知识异质性和社会关系网络异质... 详细信息

创业团队知识多样性和社会关系网络会对科技型新创企业技术创新产生较大影响,进而影响其成长。基于已有的创业团队异质性研究主要是借鉴高管团队异质性的研究结论,结合资源基础理论和社会交换理论,研究了知识异质性和社会关系网络异质性对新创科技型企业的作用机理,并探讨了创新氛围和社会关系网络质量在新创科技型企业资源整合及利用过程中的调节作用。对河南省304家科技型新创企业的实证研究发现,创业团队知识异质性与创业绩效间存在倒U型关系,并受到创新氛围的负向调节和社会关系网络质量的正向调节;创业团队社会关系网络异质性正向影响创业绩效,并受到创新氛围和社会关系网络质量的正向调节。

关键词：创业团队异质性创新氛围社会关系网络新创企业绩效

沉默的可能性:《纽约三部曲》中布朗肖文学观之探究

在线全文

学校读者我要写书评

暂无评论

外国文学 2023年第3期 146-156页

作者：夏寒宁波工程学院外国语学院浙江宁波315211

美国作家保罗·奥斯特的文学创作深受法国思想家布朗肖的影响,其代表作《纽约三部曲》便是对后者以沉默为中心的文学观的一次虚构化实践。该小说以“文学的真相是什么”这一关于文学自身存在的高度自我指涉的问题为核心命题,是对何为理... 详细信息

美国作家保罗·奥斯特的文学创作深受法国思想家布朗肖的影响,其代表作《纽约三部曲》便是对后者以沉默为中心的文学观的一次虚构化实践。该小说以“文学的真相是什么”这一关于文学自身存在的高度自我指涉的问题为核心命题,是对何为理想的语言、理想的作者与理想的作品具有哲学意味的文学探索。它以揭示文学语言的沉默本质为切入点,呈现了沉默所具有的创造性的否定力量,也使语言拥有了表达无限语义的潜能;在此基础上,作者藏匿于书写行为中,创造出布朗肖意义上的悖论式的理想作品。在卸下表达绝对意义的束缚后,作品向无穷的可能性敞开自身,具有了更加丰富的创造性。

关键词：《纽约三部曲》奥斯特布朗肖沉默

近代中国“审计入宪”的历程、动因及历史启示

在线全文

学校读者我要写书评

暂无评论

审计与经济研究 2022年第6期37卷 1-9页

作者：夏寒南京审计大学政府审计学院江苏南京211815

随着政权的更迭,近代中国先后有九部具有宪法性质的文件问世,其中大部分都写入了审计的条款。20世纪20年代,联省自治背景下颁布的大量省宪中的审计条款更是全面而具体。近代的“审计入宪”符合宪法之要义,也是国家和地方治理的内在需求... 详细信息

随着政权的更迭,近代中国先后有九部具有宪法性质的文件问世,其中大部分都写入了审计的条款。20世纪20年代,联省自治背景下颁布的大量省宪中的审计条款更是全面而具体。近代的“审计入宪”符合宪法之要义,也是国家和地方治理的内在需求,同时有国际先例可参考。“审计入宪”保障了审计机关的职权和独立性,也为近代审计法律法规的制定奠定了基础。近代“审计入宪”历史表明审计制度既是民主政治的必然需求,也是国家和地方治理的现实需求,同时入宪的审计制度需要充分考量国情和历史传统。

关键词：近代中国宪法审计制度审计入宪省宪政府审计

同方期刊数据库