检索结果-南通市图书馆

Nonlinear Internal Friction Character of Foamed Aluminum

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1998年第1期15卷 52-53页

作者： HAN Fu-sheng ZHU Zhen-gang wang shan-ying LIU Chang-song Institute of Solid State Physics Chinese Academy of SciencesHefei 230031

An experiment has been carried out to investigate the damping behavior of foamed *** was found that foamed aluminum has a significant nonlinear internal friction character,i.e.,its damping capacity is amplitude-depend... 详细信息

关键词： aluminum friction character

Role of Ga-doping in iron-gallium alloy clusters

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

Chinese Physics B 2012年第2期21卷 461-468页

作者： Tang Pei-Zhe Liu Hai-Tao Zhu Jie wang shan-ying Duan Wen-Hui Department of Physics Tsinghua UniversityBeijing 100084China The Key Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

The structural and magnetic properties of Fen-mCam （n = 3 - 6, m = 0 - 2; n = 13, m = 0 - 3） alloy clusters have been studied using density functional theory. The substitutional doping is favourable for small clusters with up to six atoms at low Ga concentration and substitutional Ga atoms in 13-atom clusters prefer surface sites. The Ca-doping generally could reduce the energetic stability but enhance the electronic stability of Fe clusters, along with a decrease of the local magnetic moments of Fe atoms around Ca dopants. These findings provide a microscopic insight into Fe-Ga alloys which are well：known magnetostriction materials.

关键词： iron gallium alloy clusters density functional theory stability magnetic properties

Comparing Genetic Characteristics of Retrotransposon TOS17 During Different Tissue Culture Processes in the Rice Cultivars Nipponbare and Shishoubaimao

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2010年第2期9卷 157-162页

作者： LI Kuan, wang Chuang, ying shan and SHOU Hui-xia State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, P.R.China [a] State Key Laboratory of Plant Physiology and Biochemistry College of Life Sciences Zhejiang University Hangzhou 310058 P.R. China

As a retrotransposon, TOS17 was a useful tool for rice genetic and functional genomic research. To ascertain the feasibility of constructing a TOS17 insertion mutation library in the rice cultivar Shishoubaimao, the genetic and expression characteristics of TOS17 were analyzed. We made solid and suspension tissue cultures and confirmed the copy numbers of TOS17 at different time points in both tissue culture processes by real-time quantitative PCR （RT-qPCR）. Three primary copies of TOS17 were detected in naturally grown Shishoubaimao. TOS17 was activated by tissue culture, and the copy numbers of TOSI7 increased along with a prolonged tissue culture time in both the Nipponbare and the Shishoubaimao cultivars. Therefore, Shishoubaimao is a potential candidate for constructing a TOS17 insertion mutant library. Compared with Nipponbare, TOS17 was more active in Shishoubaimao during tissue culture. Higher copy numbers of TOS17 were obtained with the suspension tissue culture process than with the solid tissue culture process over the same time courses. We concluded that 3-4 months of suspension tissue culture time is suitable for constructing a TOS17 insertion mutant library in Shishoubaimao.

关键词： Shishoubaimao tissue culture TOS17 copy number insertion mutant library

Oral Administration and External Application of Chinese Drugs Combined with Micro-invasive Operation for the Treatment of Varicose Ulcers in the Lower Extremities

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2009年第6期15卷 420-425页

作者：王小平张宇粟文娟王珊珊王英 Department of Surgery of Integrated Traditional and Western Medicine Shanghai Municipal Hospital of Traditional Chinese Medicine

Objective:To evaluate the clinical therapeutic effects of oral administration and external application of Chinese drugs combined with micro-invasive surgery for the treatment of varicose ulcers in the lower extremities(ecthyma).Methods:A total of 152 patients(163 limbs) suffering from varicose ulcers on the lower limbs were assigned to two groups according to the patients *** 102 cases(109 limbs) in the treatment group underwent the method of endovenous microwave closure of communicating veins ...

关键词： ecthyma varicose ulcer treatment of integrated Chinese and Western medicine microwave endovenous micro-invasiveness

在线全文

学校读者我要写书评

暂无评论

社会公正的制度评价标准初探

南昌大学学报（人文社会科学版） 2014年第6期45卷 26-31页

作者：王善英山东社会科学院哲学研究所山东济南250002

评价社会公正有很多标准和尺度,但最根本的标准是制度,这符合马克思辩证唯物主义的基本观点。关键要看制度是否对全体社会主体具有统一的保障力和约束力,是否能保障最广大人民群众的根本利益。它体现在制度规定本身、制度执行过程及制... 详细信息

评价社会公正有很多标准和尺度,但最根本的标准是制度,这符合马克思辩证唯物主义的基本观点。关键要看制度是否对全体社会主体具有统一的保障力和约束力,是否能保障最广大人民群众的根本利益。它体现在制度规定本身、制度执行过程及制度执行结果中,体现在对社会特需群体生活的保障上。这要求正确处理理论与实践的关系以及形式公正与实质公正的关系。

关键词：社会公正制度评价标准

Au和3d过渡金属元素混合团簇结构、电子结构和磁性的研究

在线全文

学校读者我要写书评

暂无评论

物理学报 2009年第5期58卷 3338-3351页

作者：顾娟王山鹰苟秉聪北京理工大学理学院北京100081 清华大学物理系北京100084

采用基于密度泛函理论的第一性原理方法系统研究了Au与3d过渡元素构成的混合小团簇的结构、稳定性、电子结构及磁性,得到了Au与3d过渡元素构成的混合小团簇的稳定结构.计算结果表明,Au与3d元素可形成大量的低能异构体,特别是有些异构体... 详细信息

采用基于密度泛函理论的第一性原理方法系统研究了Au与3d过渡元素构成的混合小团簇的结构、稳定性、电子结构及磁性,得到了Au与3d过渡元素构成的混合小团簇的稳定结构.计算结果表明,Au与3d元素可形成大量的低能异构体,特别是有些异构体在结构上极相近,这不同于共价或离子键类型的团簇.与纯过渡金属团簇类似,这类团簇也表现出复杂的磁性.过渡金属元素的磁矩相比体材料而言既有增强的、也有减弱的,与轨道的交换劈裂密切相关.对于基态构型,AuCr2,Au2Cr2,Au2Mn2团簇中的两过渡金属元素的磁矩是反平行的,其他团簇为平行排列.异构体中过渡金属元素的磁矩也存在反平行排列的情形.

关键词：密度泛函理论第一性原理方法团簇电子结构

Association between inflammatory mediators and angiographic morphologic features indicating thrombus formation in patients with acute myocardial infarction

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2009年第15期122卷 1738-1742页

作者： LI Dong-bao HUA Qi LIU Zhi LI Jing XU Li-qing wang shan JIN Wei-ying Department of Cardiology Xuanwu Hospital of Capital Medical University Beijing 100053 China

Background Inflammatory mechanisms had played an important role in the occurrence and prognosis of acute myocardial infarction, inflammatory mediators was associated with adverse outcomes of acute myocardial infarction. This study tested the hypothesis that in the acute phase of myocardial infarction with ST-segment elevation, neutrophil count and high-sensitivity C-reactive protein are predictive of angiographic morphologic features that indicate thrombus formation in the infarct-related artery. Methods This retrospective study included 182 consecutive patients with acute myocardial infarction and ST-segment elevation. Patients were assigned to a thrombus-formation group （n=77） and a non-thrombus-formation group （n=-106）. All patients had a Killip＇s classification 〈3 and onset 〈12 hours prior to presentation. All the cases were going to undergo coronary angiography, including primary percutaneous coronary intervention, simple coronary angiography, or thrombolysis in a coronary artery （or arteries） or coronary artery bypass graft（s）. Blood samples for measurement of high-sensitivity C-reactive protein and for routine blood laboratory studies were collected prior to coronary angiography. Results The levels of high-sensitivity C-reactive protein, total leukocyte counts, neutrophil counts, and neutrophil/ lymphocyte ratios were substantially higher in the thrombus-formation group than in the non-thrombus-formation group patients （for each, P 〈0.05）. Stepwise Logistic regression analyses identified high-sensitivity C-reactive protein, neutrophil count, and neutrophil/lymphocyte ratio as independent predictors of thrombus formation in the infarct-related artery （for each, P 〈0.05）. Conclusions In patients with acute myocardial infarction levels of high-sensitivity C-reactive protein are predictors to higher neutrophil counts, neutrophil/lymphocyte ratio, and ndicate thrombus formation

关键词： acute myocardial infarction thrombosis neutrophil percutaneous coronary intervention C-reactive protein

Interplay between creeping fat and gut microbiota: A brand-new perspective on fecal microbiota transplantation in Crohn's disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2025年第2期31卷 138-143页

作者： ying wang Jie Liu Department of Life Sciences and Medicine South District of Endoscopic CenterThe First Affiliated Hospital of University of Science and Technology of ChinaUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Department of Gastroenterology The First Affiliated Hospital of University of Science and Technology of ChinaHefei 230001Anhui ProvinceChina

Inflammatory bowel disease,particularly Crohn's disease(CD),has been linked to modifications in mesenteric adipose tissue(MAT)and the phenomenon known as"creeping fat"(CrF).The presence of CrF is believed to serve as a predictor for early clinical recurrence following surgical intervention in patients with ***,the incorporation of the mesentery during ileocolic resection for CD has been correlated with a decrease in surgical recurrence,indicating the significant role of MAT in the pathogenesis of *** numerous studies have indicated that dysbiosis of the gut microbiota is a critical factor in the development of CD,the functional implications of translocated microbiota within the MAT of CD patients remain *** manuscript commentary discusses a recent basic research conducted by Wu et *** their study,intestinal bacteria from individuals were transplanted into CD model mice,revealing that fecal microbiota trans-plantation(FMT)from healthy donors alleviated CD symptoms,whereas FMT from CD patients exacerbated these ***,FMT was found to affect intestinal permeability,barrier function,and the levels of proinflammatory factors and ***,these findings suggest that targeting MAT and CrF may hold therapeutic potential for patients with ***,the study did not evaluate the composition of the intestinal microbiota of the donors or the subsequent alterations in the gut ***,the gut microbiota plays a crucial role in the histopathology of CD,and thus,targeting MAT and CrF may represent a promising avenue for treatment in this patient population.

关键词： Crohn's disease Mesenteric adipose tissue Creeping fat Fecal microbiota transplantation Gut microbiota

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

TiO_2纳米管的力学和电子学性质

物理学报 2009年第12期58卷 8544-8548页

作者：林峰李缵轶王山鹰清华大学物理系北京100084

基于密度泛函理论研究了纤铁矿和锐钛矿型TiO2纳米管的原子结构、稳定性、Young模量以及电子能带结构.计算结果显示:在纳米管直径较小时,锐钛矿型TiO2纳米管的稳定性要好于纤铁矿型纳米管,随着管径的增大,纤铁矿型纳米管变得比锐钛矿型... 详细信息

基于密度泛函理论研究了纤铁矿和锐钛矿型TiO2纳米管的原子结构、稳定性、Young模量以及电子能带结构.计算结果显示:在纳米管直径较小时,锐钛矿型TiO2纳米管的稳定性要好于纤铁矿型纳米管,随着管径的增大,纤铁矿型纳米管变得比锐钛矿型纳米管要更稳定.纤铁矿型TiO2纳米管具有比锐钛矿型纳米管更大的Young模量,力学性能比较优异.另外,通过对电子能带结构的研究发现,手性对TiO2纳米管的电子结构影响较大,纤铁矿(0,n)型和锐钛矿(n,0)型纳米管为间接带隙半导体,而纤铁矿(n,0)型和锐钛矿(0,n)型纳米管却具有直接带隙.

关键词： TiO2纳米管 Young模量间接带隙直接带隙