Alterations in IGF-I affect elderly: role of physical activity

The growth hormone–insulin-like growth factor I (IGF-I) axis is an important physiological regulator muscle for development. Although there is evidence that aging muscle retains the ability to synthesize IGF-I, there is also evidence that aging may be associated with attenuation of the ability of exercise to induce an isoform of IGF-I that promotes satellite cell proliferation. However, it is clear that overexpression of IGF-I in the muscle can protect against age-related sarcopenia. Strength training appears to be the intervention of choice for the prevention and treatment of sarcopenia. IGF-I has been implicated in the loss of the muscle with age, and IGF-I expression levels change as a consequence of strength training in older adults. However, it seems that advancing age, rather than declining serum levels of IGF-I, appears to be a major determinant of life-time changes in body composition in women and men. We concluded that resistive exercise is a significant determinant of muscle mass and function. Elevated levels of IGF-I have been found in physically active compared to sedentary individuals. Recent work suggests that IGF-I as a mediator plays an important role in muscle hypertrophy and angiogenesis, both of which characterize the anabolic adaptation of muscles to exercise.     

建立市价会计的构想

会计准则中规范的五种会计计量属性在物价变动情况下存在诸多的不足,从而提出建立市价会计的构想。文章提出了市价会计的概念、市价会计的运用、企业运用市价会计需要解决的问题及市价会计的意义。     

拓展习题潜在功能培养学生创新能力

在习题教学中 ,结合教学实例 ,探讨培养学生创新能力问题 ,指出了培养学生数学创新能力的一些途径 .     

论个人信息财产权的独立性

关于个人信息财产权与人格权的关系,目前学界有"一元论"和"二元论"两种不同观点。个人信息财产权具有可转让性,与人格权的人身专属性有明显区别,应当独立确认个人信息财产权。个人信息财产权可以独立行使,形成"个人信息人格权-个人信息财产权-个人信息使用权"的权利层次,有利于保障个人信息商业利用行为中各权利人合法利益的实现。不同类型个人信息对人格的"外在性"意义不同,对个人信息财产权进行独立保护,有利于真正实现人格尊严保护与信息自由的价值平衡。因此,只有对个人信息财产权采取独立确认、独立行使、独立保护的二元模式,才能保障个人信息通过市场进行最有效率地配置,促进信息时代个人信息商业利用的有序进行。     

运动处方的研究现状及其在高校体育教学中的应用

运动处方是运动健身的科学依据。采用文献资料法，综述了国内外运动处方的研究现状，认为关于运动处方的研究工作已趋完善，运动处方价值的体现重在实施。在阐述了高校实施运动处方的客观依据和现实意义后指出：高校是运动处方实施的重要场所，运动处方在高校的推广势在必行。最后探讨了在高校实施运动处方的主要途径。     

Quantifying Quality: Can Quantitative Data (“Metrics”) Explain the 2001 RAE Ratings for Social Policy and Administration?

This paper finds that around 80 per cent of the differences in the ratings awarded in the 2001 RAE for social policy may be “explained” using half a dozen pieces of quantitative data. Social policy excellence—as judged by peer review—is associated with the award of doctorates, the amount of money raised, publications in a particular (if broad) range of journals and books by major publishers, and being large. Even taking account of differences on all these factors, the analysis found that new universities fared worse than their quantitative data would suggest. It is argued that quantitative data should play a larger role in decisions about research quality, aiding equity and transparency.     

Calibration Estimator of a Rare Sensitive Attribute with Poisson Distribution

In this paper we consider the calibration procedure for a rare sensitive attribute with Poisson distribution which suggested by Land et al. (2012) using auxiliary information associated with the variable of interest. In the calibration procedure, we can use auxiliary information such as socio-demographical variables for the respondents of rare sensitive attribute questions from an external source, and then this estimator can be improved with respect to the problems of non coverage or non response. From the efficiency comparison study, we show that the calibrated Poisson RR estimators are more efficient than that of Land et al. (2012), when the known population cell and marginal counts of auxiliary information are used for the calibration procedure.     

运动与运动性蛋白尿

讨论了运动训练对肾脏功能的影响，即运动性蛋白尿的影响因素及蛋白尿的形成机制；同时，论述了蛋白尿等指标在运动实践中的应用     

高校体育应对学生加强终生体育意识的培养

以全民健身计划的贯彻和实施为依据,结合高校教育的目的和任务,具体地阐述了高校体育对学生加强终身体育意识培养的重要性和必要性,并对今后高校体育教学工作提出了五点建议.     

Limits of quantitation for laboratory assays

Summary.  A common problem with laboratory assays is that a measurement of a substance in a test sample becomes relatively imprecise as the concentration decreases. A standard solution is to establish lower limits for reliable measurement. A quantitation limit is a level above which a measurement has sufficient precision to be reliably reported. The paper proposes a new approach to defining the limit of quantitation for the case where a linear calibration curve is used to estimate actual concentrations from measured values. The approach is based on the relative precision of the estimated concentration, using the delta method to approximate the precision. A graphical display is proposed for the assessment of estimated concentrations, as well as the overall reliability of the calibration curve. Our research is motivated by a clinical inhalation experiment. Comparisons are made between the approach proposed and two standard methods, using both real and simulated data.