检索结果-南通市图书馆

Recovery Capacity, Haemodynamic and Blood Lactate Changes during Training and Competition in Elite Congolese Karate Athletes

引用

World Journal of Cardiovascular Diseases 2020年第5期10卷 257-273页

作者： Jean Georges André Moulongo Jean Martin Moussoki Elvina Lys surêche Massamba Fêtra Nella Massala Kitanga Bernard Packa Tchissambou Jean Robert Mabiala Babela Alphonse Massamba Laboratory of Sport Biosciences and Combat Sports research Unit Higher Institute of Physical Education and Sports Marien NGOUABI University Brazzaville Congo Laboratory “Health and Adapted Physical Activities” Higher Institute of Physical Education and Sports Marien NGOUABI University Brazzaville Congo Pediatrics department Brazzaville University Hospital and Faculty of Health Sciences Marien NGOUABI University Brazzaville Congo

Background: Rare are the studies which treated the effect of training and successive fights of karate on haemodynamic and blood lactate concentrations responses. Objectives: To evaluate and analyze the aerobic capacity of elite Congolese karate athletes, as well as their haemodynamic and blood lactate concentrations responses changes during Ruffier test and stimulated competition. Methods: Twelve karate athletes (6 seniors and 6 juniors) took part in the study. These karate athletes were selected within the national karate teams (senior and junior) of Congo-Brazzaville. Anthropometric, bioenergetic and haemodynamic (HR, SBP, DBP) parameters and blood lactate [La] concentrations were measured at rest, immediately after the end of Ruffier test and each fight (n = 3). Results: Peak aerobic power (PAP) and maximum oxygen uptake (VO2 max) values averaged 437 ± 23 watts and 57.61 ± 2.2 ml/kg/mn, values varying as function as age division (senior vs junior). The recovery index was 5.4 ± 3.4 for juniors and 6.8 ± 3.2 for seniors. SBP, HR and [La] concentrations increased significantly during fights, compared to the resting values. HRmax was 182.3 ± 1.6 bpm (89% theoretical HRmax) for seniors and 182.0 ± 13.5 bpm (86% theoretical HRmax) for juniors. Peak [La] concentrations were 10.3 ± 1.5 mmol/l for seniors and 10.8 ± 1.2 mmol/l for juniors. Conclusion: Congolese karate athletes call upon high levels of the anaerobic and aerobic capacities. The karate training program in Congo should emphasize more gold improvising lower body anaerobic power and endurance.

关键词： Karate Peak Aerobic Power Maximum Oxygen Uptake Heart Rate Blood Lactate

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

Effects of Topographic Slopes on Hydrological Proecsses and Climate

引用

Advances in Atmospheric Sciences 2001年第5期18卷 733-741页

作者： Jinliang Liu Climate Processes and Earth Observation Division, Meteorological Service of Canada, 4905 Dufferin Street, Downsview, Ontario M3H 5T4, Canada Han-Ru Cho department of Atmospheric Science, National Central University, Chungli 320, Taiwan Climate Processes and Earth Observation Division Meteorological Service of Canada Downsview Canada National Central University Chungli Taiwan

Based on previous research results on river re-distribution models, a modification on the effects of topographic slopes for a runoff parameterization was proposed and implemented to the NCAR's land sur- face model (LSM). This modification has two aspects firstly, the topographic slopes cause outflows from higher topography and inflows into the lower topography points; secondly, topographic slopes also cause decrease of infiltration at higher topography and increases of infiltration at lower topography. Then changes in infiltration result in changes in soil molsture, surface fluxes and then in surface temperature, and eventual- ly in the upper atmosphere and the climate. This mechanism is very clearly demonstrated in the point bud- gets analysis at the Andes Mountains vicinities. Analysis from a regional scale perspective in the Mackenzie GEWEX Study (MAGS) area, the focus of the ongoing Canadian GEWEX program, shows that the modi- fied runoff parameterization does bring significant changes in the regional surface climate More important- ly, detailed analysis from a global perspective shows many encouraging improvements introduced by the modified LSM over the original model in simulating basic atmospheric climate properties such as thermodynamic features (temperature and humidity). All of these improvements in the atmospheric climate simulation illustrate that the inclusion of topographic effects in the LSM can force the AGCM to produce a more realistic model climate.

关键词： Hydrological processes Runoff,Parameterization Topographic slope Climate model Land surface model

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

大鼠肾上腺髓质交感节前神经纤维的分布——PHA-L顺行追踪法研究

引用

解剖学杂志 1998年第5期21卷 413-416页

作者：佟晓杰王振宇于频野条良彰中国医科大学脑研究所神经解剖研究室沈阳110001 日本国福井医科大学第1解剖教室

用PHA-L顺行追踪法观察大鼠肾上腺髓质内交感节前神经纤维的来源、走行和分布特征.结果表明,来自胸8～10节段脊髓侧柱分布到肾上腺髓质的交感节前神经纤维,随内脏大神经走行,而后又成为内脏大神经的分支进入并通过肾上腺神经节,向内下... 详细信息

用PHA-L顺行追踪法观察大鼠肾上腺髓质内交感节前神经纤维的来源、走行和分布特征.结果表明,来自胸8～10节段脊髓侧柱分布到肾上腺髓质的交感节前神经纤维,随内脏大神经走行,而后又成为内脏大神经的分支进入并通过肾上腺神经节,向内下方走行,在肾上腺内侧缘分成2～3支后,分别在肾上腺被膜内走行一段距离或立即进入肾上腺.在皮质内无分支,以若干小神经束穿经皮质到达髓质;在髓质内以粗细不等的纤维分散走行在髓质细胞索之间,在走行中逐渐分为多种形态的终末支,有的为带为许多膨体的树枝状分支,有的为带有许多膨体的终末支形成丛状或网状,并且再分支分布于髓质细胞之间.

关键词：肾上腺髓质交感节前神经纤维终末丛 PHA-L

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

台湾海峡南部中上层鱼类年间种类组成相似程度的模糊识别

引用

海洋学报 2003年第S2期25卷 29-34页

作者：张澄茂方水美杨圣云福建省水产研究所福建厦门361012 厦门大学海洋系福建厦门361005

根据闽南海区灯光围网作业信息船1989～1998年9180网次渔捞记录资料,应用模糊数学方法,对台湾海峡南部中上层鱼类年间种类组成的相似程度进行模糊识别.结果得出,台湾海峡南部中上层鱼类群聚优势种存在明显的鱼种交替现象,年间种类组成... 详细信息

根据闽南海区灯光围网作业信息船1989～1998年9180网次渔捞记录资料,应用模糊数学方法,对台湾海峡南部中上层鱼类年间种类组成的相似程度进行模糊识别.结果得出,台湾海峡南部中上层鱼类群聚优势种存在明显的鱼种交替现象,年间种类组成的模糊贴近度变动于0 659～0 923之间,平均为0 791.模糊聚类分析表明,自1992年以来,该海区中上层鱼类种类组成虽已发生一定的变化,但其年间的模糊贴近度总体上仍处于较好的水平.综合分析认为台湾海峡南部中上层鱼类群聚结构较为稳定,资源状况良好,并具有较大的开发利用潜力.

关键词：中上层鱼类种类组成相似程度模糊识别台湾海峡南部

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

印度草药方Body Revival对人类血小板聚集及大鼠心肌缺血的作用(英文)

引用

中西医结合学报 2011年第7期9卷 746-751页

作者： Tapas Kumar sur Biswajit Auddy Dipankar Bhattacharyya department of Pharmacology Institute of Postgraduate Medical Education and ResearchWest Bengal University of Health Sciences

目的:观察印度草药方Body Revival(BR)对人类血小板聚集及异丙肾上腺素引起的大鼠心肌缺血的作用。方法:BR悬浮液(分别含BR10、20和30μg)与富血小板血浆混合后,37℃下培养30min,分别将二磷酸腺苷(20mmol/L)或胶原蛋白(2μg)加入混合液... 详细信息

目的:观察印度草药方Body Revival(BR)对人类血小板聚集及异丙肾上腺素引起的大鼠心肌缺血的作用。方法:BR悬浮液(分别含BR10、20和30μg)与富血小板血浆混合后,37℃下培养30min,分别将二磷酸腺苷(20mmol/L)或胶原蛋白(2μg)加入混合液中,与混合了等体积的BR悬浮液的贫血小板血浆对比观察BR对于血小板凝集的作用。Wistar大鼠分为4组以检测BR对于异丙肾上腺素引起的心肌缺血的作用。使用标准的商业化试剂盒测量大鼠血清中肌酐激酶、天冬氨酸氨基转移酶及丙氨酸氨基转移酶的水平,同时测量大鼠血清中氮氧化物的含量及大鼠心肌中脂质过氧化物及蛋白质的含量。结果:BR能够剂量依赖性地抑制二磷酸腺苷或胶原蛋白引起的人类血小板聚集。此外,BR对于异丙肾上腺素引起的大鼠心肌缺血具有保护作用。与对照组比较,BR能够显著降低大鼠血清中肌酐激酶、天冬氨酸氨基转移酶、丙氨酸氨基转移酶和氮氧化物的含量以及大鼠心肌中脂质过氧化物的含量(P<0.01)。结论:BR能够抑制人类血小板聚集并对异丙肾上腺素引起的大鼠心肌缺血具有保护作用。

关键词：血小板聚集抑制剂心肌缺血脂质过氧化反应一氧化氮植物提取物大鼠

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

准噶尔盆地南缘山地静校正方法探讨

引用

新疆石油地质 2003年第6期24卷 576-578页

作者：薛为平刘治凡周清华梁英中国石油新疆油田分公司勘探开发研究院地球物理研究所新疆乌鲁木齐830011

准噶尔盆地南缘地形、低降速带速度和厚度变化剧烈,高速层顶界面起伏不平,做好表层调查和静校正工作是地震勘探资料处理的关键。分析了常用的几种调查表层结构方法的基本原理、适用条件和优缺点,考虑到工区内地形和低降速带厚度变化特... 详细信息

准噶尔盆地南缘地形、低降速带速度和厚度变化剧烈,高速层顶界面起伏不平,做好表层调查和静校正工作是地震勘探资料处理的关键。分析了常用的几种调查表层结构方法的基本原理、适用条件和优缺点,考虑到工区内地形和低降速带厚度变化特别巨大,提出南缘工区采用联合调查的方法调查表层地质结构,以绿山折射静校正初至折射法(以下简称EGRM)为基础,综合小折射、微测井和τ值等资料,综合建立近地表结构模型的方法。

关键词：准噶尔盆地地震折射静校正低速带三维模型

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

Tracking Error Analysis of Iterative Learning Control with Exponential Learning Gain

Tracking Error Analysis of Iterative Learning Control with E...

引用

第二十九届中国控制会议

作者： XIONG Zhihua1,GENG Hui1,XU Yongmao1,REN Changrui2 1.department of Automation,Tsinghua University,Beijing 100084,P.R..China2.Supply Chain/Logistics&Customer Relationship Management,IBM China research Lab,Beijing 100094,P.R.China

An iterative learning control（ILC）with exponential learning gain based on a fixed reference batch is presented for the trajectory tracking control of a kind of linear system.A reference batch should be properly selected at *** the learning gain in the ILC law is the ratio of the input and output changes between the current batch and reference batch,multiplied by an exponential learning *** the method,the desired trajectory can be tracked successfully while the batch number goes *** asymptotic convergence of tracking error is analyzed,and sufficient condition to guarantee the monotonic convergence of the tracking error norm is also *** proposed method is validated on a linear time-invariant system.

关键词： Iterative Learning Control Exponential Learning Gain Fixed Reference Batch Linear System

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

Mining Cluster-Defining Actionable Rules

Mining Cluster-Defining Actionable Rules

引用

第二十一届中国数据库学术会议

作者： HE Zeng-You XU Xiao-Fei DENG Sheng-Chun (department of Computer Science and Engineering,Harbin Institute of Technology,Harbin 150001)

One of the main motivations of clustering has been the hope that,by clustering the data in meaningfully distinct clusters,we can then proceed to make independent decisions for each *** paper develops two frameworks,Loose-Coupled Framework and Tight-Coupled Framework,for evaluating clustering methods in terms of their value in *** specified,we use the contrast set mining technique to mine cluster-defining actionable rules from data clusters to understand the differences between *** an experimental study we demonstrate the usefulness of our techniques against other popular *** technique has potential applications in CRM such as designing different marketing campaigns for various customer segmentations.

关键词： Clustering Contrast set Actionable rules Data mining

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

Application of laparoscopic cholecystectomy in patients with cirrhotic portal hypertension

引用

Hepatobiliary & Pancreatic Diseases International 2004年第2期3卷 270-274页

作者： Wu Ji, Ling-Tang Li, Xun-Ru Chen and Jie-Shou Li Nanjing, Chinaresearch Institute of General surgery, Nanjing Ge- neral Hospital of Nanjing PLA Command, Nanjing 210002, China and department of Hepatobiliary surgery, Kunming General Hospital of Chengdu PLA Command, Kunming 650032, China research Institute of General surgery of PLA Nanjing General Hospital of Nanjing PLA Command Nanjing 210002 China.

BACKGROUND: Laparoscopic cholecystectomy (LC) has been widely adopted in treating benign gallbladder disea- ses. Cirrhosis and cirrhotic portal hypertension (CPH) are contraindicated for LC in its early period. In recent years, several studies have reported liberal use of LC in patients with cirrhosis. But its benefits and successful use in patients with CPH are less documented. This study was designed to evaluate the feasibility, safety and technical characteristics of LC in CPH patients. METHODS: In 38 patients with symptomatic gallbladder disease and CPH, 19 belonged to Child A class, 15 Child B class and 4 Child C class. Perioperative data of these pa- tients were collected and analyzed. RESULTS: LC was successfully performed in 36 patients, and 2 patients (5.3%) were converted to open cholecystec- tomy (OC) for difficulty in management of bleeding under laparoscopy and dense adhesion of Calot' s triangle. The sur- gical time was 62.6±15.2 minutes. The estimated amount of intraoperative hemorrhage was 75.5±15.5 ml. No blood transfusion was necessary. The time to resume diet was 18.3 ±6.5 hours. Seven postoperative complications in 5 patients (13.2%) included port-site infection (1 patient), respiratory infection (2), upper digestive tract bleeding (1), slight hepatic encephalopathy (1) and increased ascites (2). All patients were cured and discharged from the hospital within 5.6±2.4 days after LC. CONCLUSIONS: Despite LC is difficult for CPH patients, it is feasible and relatively safe. To make LC successful in patients with CPH, it is necessary for surgeons to acquaint with the technical characteristics of LC and emphasize me- ticulous perioperative management.

关键词： cirrhosis portal hypertension laparoscopic cholecystectomy

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

research on the surface Micro-configuration in Vibration Cutting Particle Reinforced Metallic Matrix Composites SiC_p/Al

引用

厦门大学学报（自然科学版） 2002年第S1期41卷 71-72页

作者： ZHAO Bo 1,2, LIU Chuan-shao 2, ZHU Xun-sheng 1, XU Ke-wei 1 (1. Institute of Mechanical Engineering, Shanghai Jiaotong U niversity, Shanghai 200030, China 2. department of Mechanical Engineering, Jiaozuo Institute of Technology, Hena n 454000, China)

The cutting performance of particulate reinforced me tallic matrix composites(PRMMCs) SiC p/Al in ultrasonic vibration cutting and c ommon cutting with carbide tools and PCD tools was researched in the paper. Mic rostructure of machined surface was described, the relation between cutting para meters and surface roughness was presented, and characteristic of the surface re mained stress was also presented. Furthermore, wear regularity and abrasion resi stance ability of tools in ultrasonic vibration cutting and common cutting o f PRMMCs were discussed in detail. The test results show: (1) The surface config urations are obviously different when using different tools to machine such PRMM Cs. The surface machined with carbide tools looks luminous and orderly and there are seldom surface defects on it. The reason is that the soft basal body is apt to flow during cutting, therefore a layer of Al matrix film covers machined sur face. On the contrary, the surface machined with PCD tools looks lackluster. But the profile of machined surface is very clear. Superfine grooves, pits and blac k reinforce particulates can be seen easily without obvious Al film. (2) Because of unstable cutting process in common cutting, the surface is easy to produce s ome defects such as burrs, built-up edges and so on so that the quality of surf ace becomes very poor. Vibration cutting can reduce the influence of tearing, pl astic deformation and built-up edge in cutting and can restrain flutter so as t o make cutting process more stable. Therefore, surface roughness of vibration cu tting is better than that of common cutting. (3) There is an optimum value of fe ed rate in vibration cutting of PRMMCs due to the influence of material characte ristics. Whether feed rate is more than or less than this optimum value, surface roughness will increase. (4) According to analyzing the wear rate of tools in v ibration cutting PRMMCs, it can be concluded that abrasion resistance of tools w ill be improved

关键词： PCD tools composite SiC p/Al surface micro-c onfiguration tool wear

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：