Pilot Study on Nanofiltration Combined with Ozonation and GAC for Advanced Drinking Water Treatment

IntroductionThe conventional process for surface water treatment,which consists of flocculation, sedimentation and filtrationcurrently, had been applied inproducingdrinkingwater formany years. Although this process can remove turbidityand bacteria in surface water effectively, only about from20% to 30% of natural organic matter ( NOM) can beeliminated. When the purified water is disinfected bychlorination, these NOMs may react with chlorine. As aresult some dis…     

关于信息素质培养的研究

阐述了21世纪的人才应具有较高的信息处理能力的意义，提出了高等教育应把信息素质的培养作为一项重要任务，重点是增强信息意识和利用信息的能力。     

反证法在高等数学中的应用举例

通过例题，详细论述了反证法在高等数学中的应用。     

对先进生产力与先进文化之间关系的结构性解读

为了实现“中华民族的伟大复兴” ,需要理论指导 ,对“什么是先进生产力和什么是先进文化”二者之间的关系及结构进行的解读 ,其目的在于指出要达到的二者动态平衡将是一个艰巨、长期和复杂的过程。     

高职高专高等数学教学中的矛盾及相应对策

通过对高职高专高等数学教学中的矛盾进行分析,提出了一些应对措施。     

Chronobiology of sleep in humans

Periodic circadian (24-h) cycles play an important role in daily hormonal and behavioural rhythms. Usually our sleep/wake cycle, temperature and melatonin rhythms are internally synchronized with a stable phase relationship. When there is a desynchrony between the sleep/wake cycle and circadian rhythm, sleep disorders such as advanced and delayed sleep phase syndrome can arise as well as transient chronobiologic disturbances, for example from jet lag and shift work. Appropriately timed bright light is effective in re-timing the circadian rhythm and sleep pattern to a more desired time, ameliorating these disturbances. Other less potent retiming effects may also be obtained from the judicious use of melatonin and exercise.     

新时期档案管理工作探析

分析了档案管理工作在社会转型期面临的机遇与挑战,指出档案管理工作只有改革、转型、创新和发展,才能在社会生活中发挥更大的作用。     

社会主义市场经济条件下高校档案工作改革的思考

高校档案工作对高校的发展有着重要的促进作用，本文论述了如何在市场经济条件下，面向21世纪加强高校档案工作的几个问题.     

浅议保持共产党员先进性的必要性和时代要求

新时期保持共产党员先进性是由中国共产党的性质和宗旨决定的,是时代发展对我们党和党员提出的新要求,是新时期加强党的执政能力建设的基础工程。共产党员应具备与时俱进的精神状态,自觉落实执政为民。