玉米淀粉接枝高吸水性树脂的合成研究

对影响淀粉—丙烯酸接枝共聚反应的引发剂用量、淀粉／单体比例、聚合温度和聚合时间等因素进行了实验考察，确定了合成玉米淀粉接枝高吸水性树脂的最佳工艺条件。合成了吸水率为400g．g^-1～600g．g^-1的高吸水性树脂．为其工业化生产提供了技术参数。     

磁控软起动器在水电厂泵控制中的应用

针对水电厂泵起动过程中采用传统的降压起动方法仍产生较大的起动电流,结合水电厂泵起动控制的特点和磁控高压电动机软起动的工作原理及结构特点,介绍了磁控软起动装置的设计,通过在水电厂泵控制中的应用证明磁控软起动器能改变电动机的起动特性,保护所拖动的机械设备,更能降低起动电流,减小电动机起动对电源系统的冲击,是理想的电动机降压起动选择.     

二溴羧基偶氮胂催化光度法测定水中痕量锰

研究了在NH_3．H_2O-NH_4Cl 介质中锰催化 H_2O_2氧化二溴羧基偶氮胂褪色的最佳条件。λ_(max)=565nm，表观摩尔吸光系数为2．6×10~4 L·moL~(-1)·cm~(-1)，线性范围为0～2．1 μg/25 mL。用于水样中痕量锰的测定，结果满意。     

20世纪30年代湖北的水利建设初探

20世纪30年代湖北发生的两次特大水灾引起了国民政府的反思。灾后，政府通过修复堤防，完善水利机构，颁布水利法规等一系列措施来加强湖北水利建设，取得一定的成绩。其经验是政府始终把水利建设看作一项复杂的系统工程，对其考虑较为全面；动员地方民众，把社会力量纳入政府统一规划，体现出现代政府的先进性，而政府自身施政条件的不足则削弱了其水利建设的成效。     

南水北调中线工程水源地旅游可持续发展研究

丹江口水库作为南水北调中线工程水源地，一方面要保护水源地环境，一方面要满足日益增长的旅游需求，成为地方脱贫致富的支柱产业。因此，水源地旅游要实现可持续发展，就要在保护环境的前提下，明确发展方向，培育核心竞争力，采取积极有效的发展策略。     

论水资源管理中的行政分割及其对策

当前我国水资源管理中存在的流域机构权威缺失、条块分割、块块分割和部门分割等体制性缺陷 ,要通过加强流域机构与地方政府协作、建立水资源市场化配置机制、促进流域经济一体化和实现水资源管理职能综合化等措施 ,以此构建水资源管理中的利益协调机制     

The History of the South East Asian Peninsular Games,1959–1975

After the Second World War the Southeast Asian countries of Burma (1948), Laos (1954), Cambodia (1955), South Vietnam (1955), Malaya (1957), and Singapore (1959) sought independence from the British, French and Japanese colonialists. The first post Second World War and post-colonial biannual multisport Southeast Asian Games was held in Bangkok in 1959 among these countries (and Thailand) although they were relatively poor developing countries. Referring to official reports of the eight bi-annual SEAP Games and other sources of information this research studies how the organization of the eight SEAP Games since 1959 contributed to the nation building process of each country and shaped the political landscape. This was carried out by creating a national identity through sports in each country as well as creating a sense of regional cooperation during periods of war, shifting boundaries and identities. This was done through rituals to legitimize newly ascended constitutional monarchies and heads of states, national flags and athletes' national identity during competition. The SEAP Games also gradually opened avenues for women's participation similar to female athletes in the Olympic Games. It also provided opportunities for promising athletes to shine, improve and compete at higher levels at the Asian and Olympic Games.     

龙宫水溶洞的成因分析

文章分析了龙宫水溶洞的形成机制,认为龙宫水溶洞是在地层地貌基础、水动力条件和断裂构造等因素的影响下形成的一个地下伏流系统。在新构造运动的影响下,喀斯特作用的向深性不断增强,水溶洞的局部顶板崩塌,使完整的伏流系统分解为五段地下水溶洞,称为"五进龙宫"。龙宫的龙门瀑布与黄果树瀑布在形成机理上有一定的相似性。     

21世纪中国的水问题及其对策

论述了 2 1世纪我国所面临的洪涝灾害、水资源短缺、水环境恶化等问题 ,并分析了应采取的对策。     

Perceived health problems in swimmers according to the chemical treatment of water in swimming pools

The objective of this study was to determine which chemical treatment used for disinfecting water in indoor swimming pools had the least impact on users' perceptions of health problems, and which generated the greatest satisfaction with the quality of the water. A survey on satisfaction and perceived health problems was given to 1001 users at 20 indoor swimming pools which used different water treatment methods [chlorine, bromine, ozone, ultraviolet lamps (UV) and salt electrolysis]. The findings suggest that there is a greater probability of perceived health problems, such as eye and skin irritation, respiratory problems and skin dryness, in swimming pools treated with chlorine than in swimming pools using other chemical treatment methods. Pools treated with bromine have similar, although slightly better, results. Other factors, such as age, gender, time of day of use (morning and afternoon) and type of user (competitive and recreational), can also affect the probability of suffering health problems. For all of the above, using combined treatment methods as ozone and UV, or salt electrolysis produces a lower probability of perceived health problems and greater satisfaction.