论连结热力学过程两态的任意性     

尹建民 《嘉应学院学报》2007,25(6):19-22

所谓连结两态热力学过程的任意性,指的是连系确定的始、终两态的可能热力学过程有无穷多,包括了各种可能的做功和吸热特性的过程,当然违反热力学第一定律的过程除外。因此,给定了始、终态后对连系它们的过程的做功和吸热的特性不可能作任何判断。  相似文献   

酵母菌对腐植酸同化利用率的初步研究     

杨德俊  叶丽娟 《湘南学院学报》2005,26(2):122-124

腐植酸是一类大分子有机物,分子结构十分复杂,酵母菌对其具有一定的同化能力,通过对酵母菌同化腐植酸能力的定量分析,发现酵母菌对腐植酸的同化利用率在30%左右.  相似文献   

关于申论考试中几个问题的分析     

洪威雷  宋俊丽  王汉斌 《广播电视大学学报》2004,(2):47-49,71

申论考试是我国公开、公正、公平选拔公务员制度的一种创新,为造就一支高素质、专业化的国家公务员队伍提供了一个规范化的竞争平台。中沦考试的主要特点是“试卷编排的程序性”、“答题过程的程序性”、“能力测试的综合性”、“考试的限制性”。申论考试是一种全新的考试,应掌握一定的阅读方法,紧扣方案的针对性,做到看清“虚拟身份”,明确文体要求,突出可行性。论述写作力争做到拟题脱俗巧点睛,以小见大高立意,说理论道重分析,言活语实可触摸,有的放矢关痛痒．辩证论述防片面．  相似文献   

浅谈电大英语教学研究及教师科研能力的培养     

兰冰 《云南电大学报》2003,5(4):10-12

科研是提高教学质量、学生学习效果、教师自身教学能力和素质的重要手段。研究电大英语教育的教学特点、规律及过程，保证教学质量是每一个电大英语教师应该进行科研工作。英语教师应依靠外部环境和自身的努力培养自己的科研能力。  相似文献   

Shear capacity of reinforced concrete columns strengthened with CFRP sheet     

谢剑  刘雪梅赵彤 《浙江大学学报(A卷英文版)》2005,6(8):853-858

INTRODUCTION There is increased need in recent years for strengthening or rehabilitation of existing reinforced concrete structures adversely affected by overloading, construction material deterioration, seismic loads, structural deformation, etc. An effective method for increasing the shear capacity of reinforced concrete columns is the use of externally bonded carbon fiber reinforced plastic (CFRP) systems (ACI, 2002). FRP systems were first applied to reinforced concrete col-umns i…  相似文献   

Inter-participant variability in daily physical activity and sedentary time among male youth sport footballers: independent associations with indicators of adiposity and cardiorespiratory fitness     

Sally A. M. Fenton  Joan L. Duda  Timothy Barrett 《Journal of sports sciences》2016,34(3):239-251

Participation in youth sport is assumed to promote and contribute towards more physically active lifestyles among children and adolescents. The aim of this study was to examine inter-participant variability in objectively measured habitual physical activity (PA) behaviours and sedentary time among youth sport participants and their implications for health. One-hundred-and-eighteen male youth sport footballers (Mean ± s = 11.72 ± 1.60) wore a GT3X accelerometer for 7 days. Average daily PA [min · day^?1, in light (LPA), moderate (MPA), vigorous (VPA) and combined moderate-to-vigorous (MVPA)] and sedentary time were calculated. Participants’ body mass index adjusted for age and sex (BMI–standard deviation score), per cent body fat (BF%), waist circumference and cardiorespiratory fitness were assessed. Results revealed that variability in daily PA behaviours and sedentary time (min · day^?1) was associated with BMI–standard deviation score [VPA (?), MVPA (?)], BF% [sedentary time (+), VPA (?), MVPA (?)], waist circumference [sedentary time (+), LPA (?)] and cardiorespiratory fitness [sedentary time (?), MPA (+), VPA (+), MVPA (+)]. Whilst sedentary time and MVPA were not related to health outcomes independent of one another, associations with markers of adiposity and cardiorespiratory fitness were stronger for sedentary time. Sedentary time was also significantly positively related to waist circumference independent of VPA. Results demonstrate inter-participant variability in habitual PA and sedentary time among youth sport participants which holds implications for their health. Thus, promoting PA and, in particular, reducing sedentary time may contribute towards the prevention of adverse health consequences associated with a physically inactive lifestyle for children and adolescents active in the youth sport context.  相似文献   

应当重视师范生的信息素养和能力培养     

邬正义  潘启勇 《常熟理工学院学报》2001,15(2):99-102

21世纪即将来临，师范计算机教育关系到下一代教师的整体素质，是当前教育改革的重要课题。本文从分析信息时代的教师应该具备的信息养素和信息技术能力出发，剖析了当前师范计算机教育中存在的一些问题，提出了改革的思路和建议。  相似文献   

钢筋混凝土构造柱在砖砌体结构中的应用     

刘毅 《宜春学院学报》2003,25(6):40-42

本文结合工程实例，通过对调协钢筋混凝土构造柱的砖砌体结构的作用机理，承载力验算等的分析和探讨，说明了钢筋混凝土构造柱的砖砌体结构中的作用。  相似文献   

提升网络学术期刊传播能力的实践与思考   总被引：1，自引：0，他引：1  

尚利娜  刘改换  牛晓勇 《出版科学》2016,24(1):82-85

为提升网络学术期刊的传播能力,提高网络学术期刊的发行质量,针对网络学术期刊的特点,围绕其发行与传播环境,并结合对2015年我国SCI收录期刊的实证分析,提出提升网络学术期刊传播能力的对策。网络学术期刊传播能力的提升,需要编辑树立互联网思维,需要建立健全多渠道的发行途径,重视标识符的使用以及重视挖掘语义出版等新出版模式。学术期刊的发展应顺应时代潮流,新元素和新出版模式的使用将成为网络学术期刊发展的必然趋势。  相似文献   

Low-intensity electrical muscle stimulation induces significant increases in muscle strength and cardiorespiratory fitness     

Toshiaki Miyamoto  Hiroyuki Kamada  Akira Tamaki  Toshio Moritani 《European Journal of Sport Science》2016,16(8):1104-1110

The aim of this study was to investigate the effect of low-intensity exercise training using belt electrode skeletal muscle electrical stimulation on muscle strength and cardiorespiratory fitness in healthy subjects. Nineteen healthy subjects were allocated into control or intervention groups; in both groups the participants kept regular physical activity while the intervention group underwent 30 min B-SES training at 3–4 METs for four weeks. Knee extensor muscle strength and cardiorespiratory endurance during incremental exercise test were measured at baseline and after four weeks for all participants. The relative change of knee extensor muscle strength in the intervention group was significantly higher than control group (p?p?相似文献