检索结果-南通市图书馆

Ecology　of　the　marine　cladoceran　Penilia　avirostris　Dana　in　Tolo　Harbour，Hong　Kong

Acta Oceanologica Sinica 1994年第1期13卷 117-127页

作者： Wong Chong kim Chan Lai-chun and Chen Qingchao )

Seasonal abundance of the marine cladoceran Penilia avirostris was studied in the Tolo Harbour,Hong Kong,from November 1987 to December *** occurred in plankton throughout the year,but no clear seasonal pattern could be identified. In general,densities were the highest in the Tolo Channel and decreased progressively towards the inner parts of the Tolo *** showed marked seasonal variations in body size and brood size. Body length of P. avirostris ranged from 0.3 to 1.0mm. Average body length was greatest on March 1988 and January 1989, and the smallest in May 1988, although no clear seasonal trends could be detected. Brood size of P. avirostris ranged from 1 to 13 over the study period with a mean of 5.6.A significant positive relationship was found between body length and brood size. Diel vertical migration and diel feeding pattern of P. avirostris was followed over a 24 h period from July 31 to August 1, 1991 at a station near the southern edge of the dam of the Plover Cove Reservoir. *** Performed typical nocturnal vertical migration. Although animals were seldom found below 10 m during either day or night,a greater fraction of the population was found in the upper 1 to 3 m at night than during the day.A diel cycle in gut pigment content was observed in ***. Gut pigment content was low during the day and increased sharply during the first 2 h after *** pigment content at 21:00 and 03:00 was about 2 times higher than average daytime *** a concentration was the highest near the surface and de creased towards the bottom, but water collected at 16 m still contained 1.79 ng/cm3 Chl.a. Because P. avirostris were usually found within the upper 10 m,we believe that the observed diel change in gut pigment content was like ly the result of a real diel feeding rhythm, and was probably not the result of individual animals moving in and out of the food-rich layer.

关键词： Ecology the Dana

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prevalence and medical management of erectile ：lysfunction in Asia

引用

Asian Journal of Andrology 2011年第4期13卷 543-549页

作者： Kwangsung Park Eu Chang Hwang Sun-Ouck kim Department of Urology Chonnam National University Medical School Sexual Medicine Research Center Chonnam National University Gwangju 501-757 Korea

Erectile dysfunction （ED） is an important worldwide health issue that has a significant negative impact on the quality of life and life satisfaction of both the affected individual and his partner. Here we review the prevalence of ED in Asia, associated factors that may influence sexual attitudes and sexual behaviours, and randomized clinical trials （RCTs） of phosphodiesterase-5 （PDE-5） inhibitors to evaluate the clinical efficacy and safety of PDE-5 inhibitors in Asian men. We searched for English-language articles in MEDLINE and PubMed from January 2000 to September 2010. Our results showed that the overall reported prevalence rate of ED in Asia ranged widely, from 2% to 88%. This finding indicates that ED is a common and major health problem in this region. However, sociocultural and economic factors in Asia prevent people from seeking and obtaining appropriate medical care. We found reports on five kinds of PDE-5 inhibitors for the management of ED.＇ sildenafil, vardenafil, tadalafil, udenafil and mirodenafih The results of RCTs showed that these five PDE-5 inhibitors are more effective than placebo in improving erectile function in Asian men with ED and that these drugs have similar efficacy and safety profiles.

关键词： Asia erectile dysfunction phosphodiesterase inhibitors prevalence

来源：

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

Sensors-Based Ambient Assistant Living via E-Monitoring Technology

引用

Computers, Materials & Continua 2022年第12期73卷 4935-4952页

作者： Sadaf Hafeez Yazeed Yasin Ghadi Mohammed Alarfaj Tamara al Shloul Ahmad Jalal Shaharyar Kama Dong-Seong kim Department of Computer Science Air UniversityIslamabad44000Pakistan Department of Computer Science and Software Engineering Al Ain UniversityAl Ain15551UAE Department of Electrical Engineering King Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Humanities and Social Science Al Ain UniversityAl Ain15551UAE Department of IT Convergence Engineering Kumoh National Institute of TechnologyGumiKorea

Independent human living systems require smart,intelligent,and sustainable online monitoring so that an individual can be assisted *** from ambient assisted living,the task of monitoring human activities plays an important role in different fields including virtual reality,surveillance security,and human interaction with *** systems have been developed in the past with the use of various wearable inertial sensors and depth cameras to capture the human *** this paper,we propose multiple methods such as random occupancy pattern,spatio temporal cloud,waypoint trajectory,Hilbert transform,Walsh Hadamard transform and bone pair descriptors to extract optimal features corresponding to different human *** features sets are then normalized using min-max normalization and optimized using the Fuzzy optimization ***,the Masi entropy classifier is applied for action recognition and *** have been performed on three challenging datasets,namely,UTDMHAD,50 Salad,and *** experimental evaluation,the proposed novel approach of recognizing human actions has achieved an accuracy rate of 90.1%with UTD-MHAD dataset,90.6%with 50 Salad dataset,and 89.5%with CMU-MMAC *** experimental results validated the proposed system.

关键词： Classification algorithm human action recognition motion sensors machine learning Masi entropy

来源：

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

Extending the nuclear chart by continuum:From oxygen to titanium

引用

Science China(Physics,Mechanics & Astronomy) 2013年第11期56卷 2031-2036页

作者： QU XiaoYing CHEN Ying ZHANG ShuangQuan ZHAO PengWei SHIN Ik Jae LIM Yeunhwan kim Youngman MENG Jie College of Science Guizhou Minzu University School of Physics and Nuclear Energy Engineering Beihang University State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University Rare Isotope Science Project Institute for Basic Science Department of Physics Education Daegu University Department of Physics University of Stellenbosch

Nuclear masses ranging from O to Ti isotopes are systematically investigated with relativistic continuum Hartree-Bogoliubov(RCHB)theory,which can provide a proper treatment of pairing correlations in the presence of the *** O to Ti isotopes,there are 402 nuclei predicted to be bound by the density functional *** the 234 nuclei with mass measured,the root mean square(rms)deviation is 2.23 *** is found that the proton drip-lines predicted with various mass models are roughly the same and basically agree with the *** neutron drip-lines predicted,however,are quite *** to the continuum couplings,the neutron drip-line nuclei predicted are extended further neutron-rich than other mass *** comparison with finite-range droplet model(FRDM),the neutron drip-line nucleus predicted by RCHB theory has respectively2(O),10(Ne),10(Na),6(Mg),8(Al),6(Si),8(P),6(S),14(K),10(Ca),10(Sc),and 12(Ti)more neutrons.

关键词： relativistic continuum Hartree-Bogouliubov theory nuclear mass table O to Ti isotopes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MULTI-EPIPOLAR LINES MATCHING-BASED RAY-SPACE INTERPOLATION FOR FREE VIEWPOINT VIDEO SYSTEM

引用

Journal of Electronics(China) 2008年第2期25卷 204-208页

作者： Fan Liangzhong Jiang Gangyi Yu Mei Yong-deak kim Faculty of Information Science and Engineering Ningbo University Ningbo 315211 China Institute of Computer Technology Graduate University of Chinese Academy of Sciences Beijing 100190 China Division of Electronics Engineering Ajou University Suwon 442-749 Korea

Ray-space based arbitrary viewpoint rendering without complex object segmentation or model construction is the main technology to realize Free Viewpoint Video(FVV) system for complex scenes. Ray-space interpolation and compression are two key techniques for the solution. In this paper,correlation among multiple epipolar lines in ray-space data is analyzed,and a new method of ray-space interpolation with multi-epipolar lines matching is proposed. Comparing with the pixel-based matching interpolation method and the block-based matching interpolation method,the proposed method can achieve higher Peak Signal to Noise Ratio(PSNR) in interpolating rayspace data and rendering arbitrary viewpoint images.

关键词： Ray-space Free Viewpoint Video (FVV) Ray-space interpolation Multi-epipolar lines matching

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Precipitate Contribution to the Acoustic Nonlinearity in Nickel-Based Superalloy

引用

Chinese Physics Letters 2009年第8期26卷 219-222页

作者： Chung-Seok kim Cliff J. LISSENDEN Engineering Science and Mechanics The Pennsylvania State University 212 EES Bldg. University Park PA 16802 USA

The influence of γ′ precipitate on the acoustic nonlinearity is investigated for a nickel-based superalloy, which is subjected to creep deformation. During creep deformation, the cuboidal γ′ precipitate is preferentially coarsened in a direction perpendicular to the applied stress axis. The length and shape factor of the γ′ precipitate increase with creep time. The increase of relative acoustic nonlinearity with increasing fraction of creep life is discussed in relation to the rafting of γ′ precipitate, which is closely related to the scattering and distortion of the acoustic wave

关键词： PRECIPITATION (Chemistry) NONLINEAR acoustics NICKEL alloys HEAT resistant alloys CREEP (Materials) DEFORMATIONS (Mechanics) SOUND wave scattering

来源：

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

Antipoisoning catalysts for the selective oxygen reduction reaction at the interface between metal nanoparticles and the electrolyte

引用

Carbon Energy 2023年第7期5卷 57-69页

作者： Sourabh S.Chougule A.Anto Jeffery Sreya Roy Chowdhury Jiho Min Yunjin kim Keonwoo Ko Bathinapatla Sravani Namgee Jung Graduate School of Energy Science and Technology(GEST) Chungnam National UniversityYuseong-guDaejeonRepublic of Korea

One of the primary challenges in relation to phosphoric acid fuel cells is catalyst poisoning by phosphate anions that occurs at the interface between metal nanoparticles and the *** strong adsorption of phosphate anions on the catalyst surface limits the active sites for the oxygen reduction reaction(ORR),significantly deteriorating fuel cell ***,antipoisoning catalysts consisting of Pt-based nanoparticles encapsulated in an ultrathin carbon shell that can be used as a molecular sieve layer are rationally *** pore structure of the carbon shells is systematically regulated at the atomic level by high-temperature gas treatment,allowing O_(2) molecules to selectively react on the active sites of the metal nanoparticles through the molecular ***,the carbon shell,as a protective layer,effectively prevents metal dissolution from the catalyst during a long-term ***,the defect-controlled carbon shell leads to outstanding ORR activity and durability of the hybrid catalyst even in phosphoric acid electrolytes.

关键词： carbon shell catalyst poisoning effect molecular sieve effect oxygen reduction reaction phosphate anions phosphoric acid fuel cells

来源：

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

Effect of preoperative biliary drainage on surgical results after pancreaticoduodenectomy in patients with distal common bile duct cancer:Focused on the rate of decrease in serum bilirubin

引用

World Journal of Gastroenterology 2008年第7期14卷 1102-1107页

作者： Yun Mee Choi Eung-Ho Cho Keon-Young Lee Seung-Ik Ahn Sun Keun Choi Sei Joong kim Yoon Seok Hur Young Up Cho Kee-Chun Hong Seok-Hwan Shin Kyung Rae kim Ze-Hong Woo Department of Surgery College of MedicineInha UniversityIncheonKorea

AIM: To examine if the rate of decrease in serum bilirubin after preoperative biliary drainagecan be used as a predicting factor for surgical complications and postoperative recovery after pancreaticoduodenectomy in patients with distal common bile duct ***: A retrospective study was performed in 49 consecutive patients who underwent pancrea-ticoduodenectomy for distal common bile duct cancer. Potential risk factors were compared between the complicated and uncomplicated groups. Also, the rates of decrease in serum bilirubin were compared pre- and postoperatively. RESULTS: Preoperative biliary drainage (PBD) was performed in 40 patients (81.6%). Postoperative morbidity and mortality rates were 46.9% (23/49) and 6.1% (3/49), respectively. The presence or absence of PBD was not different between the complicated and uncomplicated groups. In patients with PBD, neither the absolute level nor the rate of decrease in serum bilirubin was significantly different. Patients with rapid decrease preoperatively showed faster decrease during the first postoperative week (5.5 ± 4.4 μmol/L vs -1.7 ± 9.9 μmol/L, P = 0.004).CONCLUSION: PBD does not affect the surgical outcome of pancreaticoduodenectomy in patients with distal common bile duct cancer. There is a certain group of patients with a compromised hepatic excretory function, which is represented by the slow rate of decrease in serum bilirubin after PBD.

关键词： Distal bile duct cancer Drainage Bilirubin Rate

来源：

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

Mutation of Oryza sativa CORONATINE INSENSITIVE 1b(OsCOI1b) delays leaf senescence

引用

Journal of Integrative Plant Biology 2015年第6期57卷 562-576页

作者： Sang-Hwa Lee Yasuhito Sakuraba Taeyoung Lee Kyu-Won kim Gynheung An Han Yong Lee Nam-Chon Paek Department of Plant Science Plant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National University Interdisciplinary Program in Bioinformatics Seoul National University Department of Plant Molecular Systems Biotechnology Crop Biotech InstituteKyung Hee University Department of Agricultural Biotechnology Seoul National University

Jasmonic acid （JA） functions in plant development, including senescence and immunity. Arabidopsis thaliana CORONATINE INSENSITIVE 1 encodes a JA receptor and functions in the JA‐responsive signaling pathway. The Arabidopsis genome harbors a single COI gene, but the rice （Oryza sativa） genome harbors three COI homologs, OsCOI1a, OsCOI1b, and OsCOI2. Thus, it remains unclear whether each OsCOI has distinct, additive, synergistic, or redundant func-tions in development. Here, we use the oscoi1b‐1 knockout mutants to show that OsCOI1b mainly affects leaf senescence under senescence‐promoting conditions. oscoi1b‐1 mutants stayed green during dark‐induced and natural senescence, with substantial retention of chlorophylls and photosyn-thetic capacity. Furthermore, several senescence‐associated genes were downregulated in oscoi1b‐1 mutants, including homologs of Arabidopsis thaliana ETHYLENE INSENSITIVE 3 and ORESARA 1, important regulators of leaf senescence. These results suggest that crosstalk between JA signaling and ethylene signaling affects leaf senescence. The Arabidopsis coi1‐1 plants containing 35S：OsCOI1a or 35S：OsCOI1b rescued the delayed leaf senescence during dark incubation, sug-gesting that both OsCOI1a and OsCOI1b are required for promoting leaf senescence in rice. oscoi1b‐1 mutants showed significant decreases in spikelet fertility and grain weight, leading to severe reduction of grain yield, indicating that OsCOI1‐mediated JA signaling affects spikelet fertility and grain filling.

关键词： Jasmonic acid leaf senescence OsCOI1b rice stay-green

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

手术截断小鼠尾末端诱发的痛觉过敏和吗啡镇痛效应(英文)

引用

生理学报 2004年第4期56卷 436-443页

作者： SusanJ.kim 卓敏多伦多大学医学院生理系

手术截断小鼠尾末端可诱发长期性的痛觉过敏和吗啡镇痛效应变化。这种长期性的变化可能是由于中枢神经系统的神经可塑性变化引起的(从脊髓背角到皮层)。在截尾5周后,小鼠后肢和余下的尾端出现痛敏反应。低剂量吗啡可诱发热板的易化反应... 详细信息

手术截断小鼠尾末端可诱发长期性的痛觉过敏和吗啡镇痛效应变化。这种长期性的变化可能是由于中枢神经系统的神经可塑性变化引起的(从脊髓背角到皮层)。在截尾5周后,小鼠后肢和余下的尾端出现痛敏反应。低剂量吗啡可诱发热板的易化反应。这些可塑性变化能延长至5周,因此小鼠的截尾模型可以用于研究截肢后的中枢性长期性的可塑性变化。

关键词：截肢痛镇痛易化吗啡小鼠幻肢痛

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：