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Search Results: 1 - 10 of 80774 matches for " Liu Shuairen "
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云下雨水酸化过程数值模拟及重庆酸雨形成机理的探讨
刘帅仁 Liu Shuairen,黄美元 Huang Meiyuan
大气科学 , 1988, DOI: 10.3878/j.issn.1006-9895.1988.t1.20
Abstract:
Comparison and analysis of the chemical characteristics of precipitation in China and Japan
中国和日本降水化学特性的分析比较

Huang Meiyuan,Hiromasa Ueda,Liu Shuairen,
黄美元
,植田洋匡,刘帅仁

大气科学 , 1993,
Abstract: Based on the chemical analysis of precipitation obtained on 33 stations in China, 29 stations in Japan and 9 stations in the USA, the chemical characteristics of precipitation in China, Japan and USA are analyzed and compared. It is shown that the chemical features of precipitation in these countries are quite different. There are acid rain in all these three countries, but the lowest pH value is found in the USA. The total ion concentration of rain water in China is the highest, among which the concentrations of SO4= , NH/ and Ca++ are especially high. The Cl- and Na+ concentrations of rain water in Japan are extraordinarily high. NO3- concentration of rain water in the USA is the highest. Analysis of the structure of ion components and various ratios of ions indicates that the influence of land sources on ion concentrations of rain water in China is significant, while influence of sea sources on ion concentrations of rain water is the largest in Japan, and influence of the industry pollution on ion concentrations of rain water is the largest in USA. In this paper the chemical characteristics of precipitation in different regions of China and Japan are also discussed and analyzed.
中国和日本降水化学特性的分析比较
黄美元 Huang Meiyuan,植田洋匡 Hiromasa Ueda,刘帅仁 Liu Shuairen
大气科学 , 1993, DOI: 10.3878/j.issn.1006-9895.1993.01.04
Abstract: 本文对中国33个站、日本29个站及美国9个站的降水化学资料进行了分析比较.结果表明,中、日、美三国的降水化学特性有很大不同.三国都有酸雨,但以美国的pH平均值最低.雨水中离子总浓度以中国为最高,其中SO_4~=,NH_4~+和Ca~(++)的浓度特别高.日本雨水中Cl~-和Na~+的浓度很高.NO_3~-在美国雨水中最高.从雨水中离子结构组成和几种重要参量的比值分析表明,中国雨水中的离子浓度受陆地源影响很大,而影响日本雨水中离子浓度最大因素是海洋.在美国以工业交通污染的影响相对最大.文中还对中、日两国不同地区的降水化学特性进行了分析和讨论.
中国西南典型地区酸雨形成过程研究
黄美元 Huang Meiyuan,沈志来 Shen Zhilai,刘帅仁 Liu Shuairen,等 et al
大气科学 , 1995, DOI: 10.3878/j.issn.1006-9895.1995.03.11
Abstract: 本文根据云水和雨水化学特性的观测和雨水酸化模式的模拟计算,研究了中国西南地区酸雨的形成过程。结果表明:在重庆和贵阳等重污染城市,云下过程对雨水的酸化起主要作用,在污染较轻的中小城镇和乡村地区,雨水酸度主要决定于云内过程。但是云下过程对雨水中的主要酸碱离子浓度都有不可忽视的明显影响。雨水的酸化主要是由于SO2与H2O2和O3的氧化,气溶胶起较弱的缓冲碱化作用。在重庆和贵阳等地,当地SO2浓度已高达饱和,其值增减50%,都不会对该地雨水酸度有明显影响,起控制作用的是氧化剂浓度。
The Model of Mobile Knowledge Services System in the Management of Complex Cluster Project  [PDF]
Yong Liu, Bingxin Liu
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.31006
Abstract: Cluster projects are projects of large-scale or with huge investment, such as Beijing 2008 Olympic Games and Shanghai 2010 Expo. A lot of on-site management works are involved in the process of cluster project management, especially the treatment of sudden accidents which would produce plenty of knowledge and experience. As cluster project on-site management spots change frequently, knowledge produced by mobile workers in the process of on-site management is hard to be saved into the knowledge repository on time. It may cause a knowledge distortion or even missing. On the other hand, in the process of cluster project management, a lot of knowledge is required by on-site workers to deal with on-site activities. However, due to lack of effective mechanisms for knowledge communion, they often face the risk of making wrong decisions. To solve the problems of knowledge management and acquisition in the process of cluster project on-site management, this paper presents a system model for mobile knowledge service.
The Collusion Deterrence with Prisoner’s Dilemma  [PDF]
Aidong Liu, Jinfang Liu
Journal of Service Science and Management (JSSM) , 2010, DOI: 10.4236/jssm.2010.34053
Abstract: I tried to present a new method to prevent collusion through employing two auditors at the same time and inspiring them provide true report by exploiting their prisoner’s dilemma. But I found this method cannot be put into practice because of the high cost. So I analyzed whether sending the second auditor in a probability, a low cost method, can deter the audit collusion. I find sending the second auditor in a probability, enforcing the rigidly lawful punishment and perfecting the reward mechanism can prevent audit collusion. I also find the auditor’s ethical constraint do good to prevent collusion and the charger of state assets management can play the same role as the real owner of the state-owned enterprise in deterring collusion. This finding provides theory support for the government to implement the publicly audit bidding and random double auditing system on state-owned enterprise. The supervision of PCAOB on auditors is also the operation of this theory.
Using Insulation in China’s Buildings: Potential for Significant Energy Savings and Carbon Emission Reductions  [PDF]
Guoliang Liu, Hans Liu
Low Carbon Economy (LCE) , 2011, DOI: 10.4236/lce.2011.24027
Abstract: Most old residential and commercial buildings in China are not insulated or not to new standards. This is true even in regions with very cold winters or regions with very hot summers. The insulation in new buildings is very poor relative to North American standards. However, insulating the exterior walls, attic roofs, and foundation walls to new standards of buildings in China would reduce the need for heating and air conditioning, and thus would save roughly 200 million tons of coal each year. This in turn would lead to a reduction in CO2 emissions of about 510 million tons per year, which is equal to about 8.4% of China’s total carbon emissions in 2006. The use of insulation in buildings will help homeowners save money, help China save energy and help the environment all at the same time. Insulation will provide a continued payback to the homeowner, not only in dollars and cents, but also by providing a more enjoyable and comfortable living environment for many years.
An Elementary Introduction to Training the Postgraduates for Professional Degrees in Oil and Gas Engineering  [PDF]
Qingyou Liu, Zhibin Liu
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.326126
Abstract: The demand of the talents in petroleum engineering of petroleum enterprises is analyzed in this paper according the current situation of the engineering education. The four levels of the professional talents needed by the petroleum enterprises are specified, which makes it clear that what the purpose and orientation of the higher education in petroleum engineering should be. The qualities of the petroleum engineers are discussed specifically and it is pointed out that the training of the postgraduate for professional degree in oil and gas engineering should be the cradle of the petroleum engineers. A training schedule is listed in this paper based on the discussion, including curriculum provision, practice link, thesis and training mode, which will be a pathfinder of the education of the professional degree graduate student in oil and gas engineering. Moreover, the practice can provide useful experience for the training and education of different type of graduates.
Overall Framework and Module of Distribution Network Coordinated Planning Considering Distributed Generation  [PDF]
Qianjin LIU, Huanghuang LIU
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.51B006
Abstract: Combining with the characteristics of China's energy and the strategy of sustainable development, analyzing the pros and cons which caused by the appearance of DG and their operation connecting to grid, this paper points out that the two sides can achieve win-win under a reasonable combination between DG and distribution system, so as to optimize the allocation of resources, improve the utilization ratio of resource, and obtain maximum social benefit, harmoniously promote the development of power industry, economy and environment. As a word, this paper puts forward a new model of distribution network planning including DG and brings in penalty factorto guide the investment and construction of DG. Last of all, this paper presents the adoption of the coordination development coefficients which is to evaluate the power planning.
Let Professional Degrees Graduate Education for Oil and Gas Engineering Become the Cradle for the Birth and Growth of Petroleum Engineers  [PDF]
Zhibin Liu, Qingyou Liu
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.37B026
Abstract:

The demand of the talents in petroleum engineering of petroleum enterprises is analyzed in this paper according the current situation of the engineering education. The four levels of the professional talents needed by the petroleum enterprises are specified, which makes it clear that what the purpose and orientation of the higher education in petroleum engineering should be. The qualities of the petroleum engineers are discussed specifically and it is pointed out that the training of the postgraduate for professional degree in oil and gas engineering should be the cradle of the petroleum engineers. A training schedule is listed in this paper based on the discussion, including curriculum provision, practice link, thesis and training mode, which will be a pathfinder of the education of the professional degree graduate student in oil and gas engineering.

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