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71.
周东 《实验室研究与探索》2011,(8):408-410,422
介绍了BOT的涵义,同时通过分析高校学生公寓热水供应系统建设项目引入BOT模式可行性的基础上,探讨了它的运行模式及应注意的问题。说明了将BOT融资模式引入高校基建领域,是解决高校后勤设备投入经费紧缺的有效途径之一,发展前景广阔。 相似文献
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Exercise and treating hyperlipidaemia with statins are two integral components of the American Heart Association guidelines to reduce cardiovascular risk in adults. Since statins can cause myalgias and myopathies, they could affect the duration or intensity of an exercise regimen. To determine the impact of statin use in adult masters swimmers, a survey was distributed to examine the association between swimming performance and statin usage in adult swimmers (≥35 years). After excluding those with chronic diseases or taking drugs that reduce physical capacity, 749 swimmers (118 taking statins, 73 not taking statins to control elevated cholesterol and 558 controls) were included in a regression model to determine the factors significantly affecting the duration and intensity of swimming workouts. Age and gender were significantly (P ≤ 0.001) associated with the distance swam per 60 min. Younger, male swimmers completed more yards per 60-min workout. Use of statins was not significantly associated with yards swam per 60-min workout. Nor did statin usage affect the number of swim sessions per month or the length of swim session. Evidently, statins do not cause enough fatigue or pain in masters swimmers to require a decrease in the duration or intensity of workouts. 相似文献
74.
The establishment of new academic specialties is an intriguing research topic from a social history of science perspective. In this article we focus on the ‘scientific migration’ within the Higher Institute of Physical Education (HIPE) and the Faculty of Medicine at the State University in Ghent, Belgium. The HIPE was ‘attached’ to the Faculty of Medicine in 1908, a world first that led to an interesting triangular relationship between physical education, physiotherapy, and medicine. The physiatrists (physicians-physiotherapists) who were appointed at the HIPE had to struggle with inferior status with respect to their colleagues within the Faculty of Medicine itself. Territorial power struggles arose on several levels. In 1936, after the first generation of physicians-physiotherapists had retired, physiotherapy was integrated fully into the Faculty of Medicine, and radiology and cancer treatment – which had been considered subsectors of physiotherapy – became autonomous specialties. Physical education, however, retained its inferior academic status. 相似文献
75.
Breast displacement has been investigated in various activities to inform bra design, with the goal of minimising movement; however, breast motion during swimming has yet to be considered. The aim was to investigate trunk and breast kinematics whilst wearing varying levels of breast support during two swimming strokes. Six larger-breasted females swam front crawl and breaststroke (in a swimming flume), in three breast support conditions while three video cameras recorded the motion of the trunk and right breast. Trunk and relative breast kinematics were calculated. Greater breast displacement occurred mediolaterally in the swimsuit condition (7.8, s = 1.5 cm) during front crawl and superioinferiorly in the bare-breasted condition (3.7, s = 1.6 cm) during breaststroke, with the sports bra significantly reducing breast displacements. During front crawl, the greatest trunk roll occurred in the sports bra condition (43.1, s = 8.3°) and during breaststroke greater trunk extension occurred in the swimsuit condition (55.4, s = 5.0°); however, no differences were found in trunk kinematics between the three breast support conditions. Results suggest that the swimsuit was ineffective as a means of additional support for larger-breasted women during swimming; incorporating design features of sports bras into swimsuits may improve the breast support provided. 相似文献
76.
水在农业发展中起重要作用,发展节水农业是缓解水资源供需矛盾、提高农业综合生产能力的重要途径。建设节水型农业,提高水的有效利用率,坚持节水灌溉、坚持节水农业的发展,不断改善和完善农业生产条件,将促进水资源可持续利用和社会经济可持续发展。本文获取泸县耕地面积、主要农作物种植面积、水资源利用及水利工程变化数据,主要农作物平均灌溉定额和节水灌溉定额数据,运用灰色预测法对泸县未来几年的主要农作物灌溉用水量进行预测,结果显示:2014-2017年水稻、玉米、小麦在采用节水技术后共计用水量分别为:14.2亿m3、11.08亿m3、0.46亿m3,共计节水量分别为:14.04亿m3、11.41亿m3、0.59亿m3。研究得出:应该大力发展节水农业.改进节水技术.提高水的利用率.节约水资源。 相似文献
77.
基于分层构权主成分分析的皖北地下水水质评价研究 总被引:3,自引:0,他引:3
针对皖北地下水水质评价,以水文地质调查数据以及取样分析结果为依据,在主成分分析的基础上,构造分层构权主成分分析评价法,并借助Arc GIS描述地下水水质区域差异性。结果表明:分层构权主成分分析方法较传统主成分分析法更具有针对性和区分度,特别针对F-含量高的地下水,可靠性和准确度更高。针对皖北地区地下水水质,东部整体优于西部,其中泗县-灵璧-宿州-雌溪一带地下水水质较好,符合饮用水卫生标准;颍上-阜南-阜阳-临泉-界首-太和一带和砀山-淮北一带属于高氟地下水区域,应采取适宜的降氟措施方可作为饮用水水源,而固镇、蒙城地区地下水受TDS、Cl-和TH含量影响,地下水水质较差,不宜作为饮用水水源。 相似文献
78.
南水北调中线工程水源区生态补偿标准研究——以生态系统服务价值为视角 总被引:5,自引:0,他引:5
生态系统服务价值评估能为确立生态环境保护激励机制和完善流域生态补偿机制提供重要的理论依据与数据支撑。本文基于南水北调中线工程水源区2002-2010年的土地利用变化分析,全面评估了水源区生态系统服务价值及其动态变化情况,据此确立了生态补偿的上限标准和分摊机制,并尝试根据生态服务功能和动态价值变化确立生态补偿支付标准。结果表明:南水北调中线工程水源区2010年生态系统服务总价值为2 724.56亿元,比2002年减少了125.38亿元;南水北调中线工程受水区生态补偿上限标准为46.12亿元/a,其中中央政府为18.45亿元/a,受水区地方政府为27.67亿元/a;生态补偿支付标准中央政府为7.1亿元/a,河南、河北、天津和北京分别为4.26亿元/a、3.93亿元/a、1.12亿元/a和1.34亿元/a。本文最后建议改革现有南水北调工程水价机制,继续加大生态补偿中央纵向转移支付,逐步建立生态补偿横向转移支付机制。 相似文献
79.
湖南省水运行业在近年面临着政策利好、需求加大、投资增加的良好局面,但是人才短缺,尤其是技能型人才短缺严重制约了湖南水运行业的发展质量与水平。湖南省交通高等职业教育要通过明确定位,调整结构,实现职业教育与培训并重;围绕水运产业发展需求调整专业结构与布局;推进政校企深度合作,协同创新人才培养机制;打造一批引领区域内交通行业人才发展的精品专业,并通过课程改革,提高培养质量,以满足湖南省水运行业发展的需求。 相似文献
80.