Java中文编码问题的产生与处理

JSP和Servlet是基于Java语言的跨平台W eb开发工具.在进行网络编程设计中,人们常碰见中文字符编码处理等问题.本文通过介绍字符集编码相关理论,并分析JSP和Servlet运行各阶段字符的编码形式,提出解决中文字符编码转换问题的方法.     

紫苏子提取物的生理功能及其在水产养殖中的应用研究进展

通过对紫苏子提取物的主要成分及生理功能描述,结合国内外该物质在生物中的应用现状,提出其在水产养殖中应注意的一些问题及重要的现实意义。     

"体教结合"与"教体结合"的内涵解读

“体教结合”和“教体结合”,看似相同,其实内涵截然不同,它们决定着我国竞技体育后备人才培养的两种机制。当前推行的“教体结合”是在“体教结合”未能实现其既定目标的情形下提出来的,“教体结合”后备人才培养机制是时代发展的必然趋势,必将引导我国竞技体育后备人才培养由传统的“教体分离”模式向完全依托教育系统培养的全新机制转变。     

Resting MAPK expression in chronically trained endurance runners

Purpose: There is a paucity of research investigating the expression of mitogen-activated protein kinases (MAPK) in chronically trained (CT) athletes. Thus, it is unclear how MAPK may contribute to performance and muscle adaptation in CT subjects. The purpose of this study was to determine MAPK total protein, and phosphorylated expression of extracellular signal-regulated kinases 1 and 2 (ERK1/2), c-Jun N-terminal kinase (JNK), and p38-MAPK (p38) between untrained, and chronically trained runners. Methods: Tissue samples were analysed from sedentary (SED; n?=?5) controls and chronically trained runners (CT; n?=?5). Resting muscle biopsy samples were analysed for total-MAPK – and ratio of phosphorylated/total (p-MAPK) – ERK1/2, JNK, and p38-MAPK via western blotting. Mann–Whitney U tests and effect sizes were utilized to determine differences in total MAPK protein content and phosphorylation status between SED and CT subjects. Results: There was no difference in total-MAPK expression between SED and CT (p?>?.05). p-p38-MAPK tended to be greater for CT compared to SED (p?=?.07). There were moderate effect sizes of decreased pERK/total-ERK (d?=??0.69) and increased pJNK/total-JNK (d?=?0.54) in CT compared to SED. There was a positive correlation between p-p38-MAPK/total-MAPK and the percentage of type I fibres (r?=?0.73, p?=?.016). Conclusion: Contrary to previous studies, chronic endurance training does not greatly influence total MAPK protein expression in chronically trained runners. However, resting phosphorylation of p38-MAPK may contribute to enhanced oxidative metabolism at chronically trained levels. These alterations are likely involved in the different physiological adaptations that occur following long-term training or at highly competitive levels.     

卵磷脂稳定性的研究进展

在卵磷脂结构和性质介绍的基础上,综述了来源、贮存方式和生产工艺等对卵磷脂稳定性影响的研究现状与进展,并对提高卵磷脂稳定性的途径进行了阐述和展望。     

关于高等数学教学的几点思考

随着素质教育的推进与高等教育走向大众化,高等数学这门基础课程的教学工作面临了巨大的压力。为保证教学质量更好的完成教学工作,笔者提出了关于认清课程开设意义、树立统一合理的教学理念,从学生心理特点出发开展有效教学和立足长远注重课程建设与完善三方面的想法并给出了详细的分析。     

String vibration dampers do not reduce racket frame vibration transfer to the forearm

In this study, we examined the effect of string vibration damping devices on reducing racket frame vibration transfer to the forearm. Twenty participants volunteered to hold a tennis racket stationary in a forehand and backhand stroking position while tennis balls were fired at 20 m x s(-1) towards two impact locations, the node of vibration and the dead spot. A three-way analysis of variance with repeated measures on damping condition, impact location and stroke condition was performed on the data. The resonant frequency of the hand-held racket was found to be approximately 120 Hz. No significant differences in amplitude of vibration at the resonant frequency were found for the wrist or the elbow when damped and non-damped impacts were compared. Impacts at the dead spot produced greater amplitudes of vibration (P < 0.01) but no interaction between impact location and string dampers was evident. The string dampers had no effect on the grip force used or the muscle electrical activity in the forearm after impact. In conclusion, we found that string dampers do not reduce the amount of racket frame vibration received at the forearm. We suggest that string dampers remain a popular accessory among tennis players because of their acoustic effects and psychological support rather than any mechanical advantage.     

从信息传播角度看科技期刊编辑出版过程及其优化

从信息传播角度将科技期刊编辑出版过程划分为信息选择、信息加工、信息传递、传播效果检验等4个环节.分析各个环节在传播学上的本质特征,进而指出其中存在的问题及解决方法.     

对我国学生体质状况的灰色关联聚类分析

以灰色系统理论中的关联分析方法为基础,建立了基于关联度的聚类分析方法,对1995年全国汉族7～22岁男性学生的体质进行了聚类评价。结果表明:我国大学阶段各年龄组学生群体体质处于最优这一层次;高中阶段各年龄组学生群体体质处于最差层次;初中阶段各年龄组学生群体体质处于中等层次;小学阶段的各年龄组学生群体体质分属于优、中、劣之间。同时显示出,基于灰色关联度聚类的方法计算简捷,结果直观清晰,从而为群体体质的综合评价提供了一种新的量化方法。