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Environmental regulatory and policy framework in China: an overview

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Journal of Environmental Sciences 2001年第1期13卷 122-128页

作者： ZHANG shi qiu (Center for Environmental Sciences, Peking University, Beijing 100871, China. E mail: zhangshq@***) 北京大学北京 100871

China has developed one of the most comprehensive environmental regulatory and policy framework in the world. This paper provides a description of the main institutions for environmental management in China, and overv... 详细信息

关键词： Laws and legislation Public policy Regulatory compliance Societies and institutions

Electrochemical derusting in molten Na_(2)CO_(3)–K_(2)CO_(3)

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International Journal of Minerals,Metallurgy and Materials 2021年第4期28卷 637-643页

作者： Dong-yang Zhang Xue Ma Hong-wei Xie Xiang Chen Jia-kang Qu qiu-shi Song Hua-yi Yin Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China Key Laboratory of Data Analytics and Optimization for Smart Industry of Ministry of Education Northeastern UniversityShenyang 110819China

The formation of a rust layer on iron and steels surfaces accelerates their degradation and eventually causes material *** addition to fabricating a protective layer or using a sacrificial anode, repairing or removing the rust layer is another way to reduce the corrosion rate and extend the lifespans of iron and ***, an electrochemical healing approach was employed to repair the rust layer in molten Na_(2)CO_(3)-K_(2)CO_(3).The rusty layers on iron rods and screws were electrochemically converted to iron in only several minutes and a metallic luster *** electron microscopy(SEM) and energy dispersive X-ray spectroscopy(EDS) analyses showed that the structures of the rust layer after healing were slightly porous and the oxygen content reached a very low ***, high-temperature molten-salt electrolysis may be an effective way to metalize iron rust of various shapes and structures in a short time, and could be used in the repair of cultural relics and even preparing a three-dimensional porous structures for other applications.

关键词： molten salt electro-deoxidation rust stainless steel derusting

Literature Analysis of Tuina in Regulating Subhealth Status in Recent 10 Years

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Journal of Acupuncture and Tuina Science 2014年第1期12卷 60-66页

作者： Lei Long-ming Wu Gui-fen qiu shi-yuan Tuina Department First Hospital Affiliated to Guangxi University of Traditional Chinese Medicine Guangxi University of Traditional Chinese Medicine

The literatures of the recent ten years about tuina(massage) therapy in traditional Chinese medicine(TCM) for regulating and treating the subhealth status were searched and analyzed to understand the current thought and methods for the regulation and treatment of subhealth status by tuina. The results showed that tuina had a better regulatory effect for subhealth status. In the selection of the position for tuina application, tuina was predominantly applied to the whole body, guided by the holistic viewpoint and meridian theory of Chinese medicine, especially on the Governor Vessel and Bladder Meridian of the back and on the area the patient felt uncomfortable. In terms of tuina techniques, the routine relaxing technique, tendon-regulating technique and acupoint-pressing technique were used in predominance. In terms of the therapeutic time and course, although the reports were different in various literatures, it was believed in most reports that 50 min and 2-4 sessions per week were appropriate. The therapeutic aim could be achieved by 15-20 sessions. Without pain from the needles and suffering in taking drugs, tuina has a better psychological regulatory effect, therefore it has a better prospect for popular application. But, the basic study on the explanation of its functional mechanism by modern medical theory and means needs to be intensified.

关键词： Tuina Massage Subhealth Preventive Medicine

EVALUATION OF RELATION BETWEEN INFORMATION SUPPLY AND DEMAND IN CHINA WITH APPROACH OF GRAVITY CENTER——In view of the economic development level to dertermine the direction of controlling for ST information system in China

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情报理论与实践 1993年第3期 15-18页

作者： shi Zhongyi qiu Xueming (the Scien-tech Information institute of Suzhou)

in this paper, based on some important facts which influence the relation between supply and demand for information, we suggest some statistical date to determine the geographical centers of information supply and demand with the formula of gravity center. By means of this approach, we can get the geographical centers of supply and demand resp, and find that the supply center for information is far away from the demand center. According to the results, we put forward a scheme of macrographically modu1ating and controlling these centers to improve the national information system in China.

关键词： national information system China plan methodlogy gravity center

Syntheses of Ferrierite and Mordenite Zeolites from Dried Gel in Alcoholic System

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Chemical Research in Chinese Universities 1995年第4期11卷 364-366页

作者： DU Hong-bin qiu shi-lun and PANG Wen-qin(Department of Chemistry,Jilin University,Changchun,130023) JILIN UNIV DEPT CHEMCHANGCHUN 130023PEOPLES R CHINA

ＳｙｎｔｈｅｓｅｓｏｆＦｅｒｒｉｅｒｉｔｅａｎｄＭｏｒｄｅｎｉｔｅＺｅｏｌｉｔｅｓｆｒｏｍＤｒｉｅｄＧｅｌｉｎＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＤＵＨｏｎｇ－ｂｉｎ；ＱＩＵＳｈｉ－ｌｕｎａｎｄＰＡＮＧＷｅｎ－ｑｉｎ（Ｄｅ... 详细信息

ＳｙｎｔｈｅｓｅｓｏｆＦｅｒｒｉｅｒｉｔｅａｎｄＭｏｒｄｅｎｉｔｅＺｅｏｌｉｔｅｓｆｒｏｍＤｒｉｅｄＧｅｌｉｎＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＤＵＨｏｎｇ－ｂｉｎ；ＱＩＵＳｈｉ－ｌｕｎａｎｄＰＡＮＧＷｅｎ－ｑｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔ...

关键词： Synthesis Zeolite Mordenite Ferrierite Alcoholic system

Eco-friendly aqueous foam stabilized by cellulose microfibers with great salt tolerance and high temperature resistance

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Petroleum Science 2023年第4期20卷 2499-2511页

作者： Li-Li Yang Xian-Bo He Yi-Xiu Cheng Guan-Cheng Jiang Ze-Yu Liu shi-Bo Wang shi-Xin qiu Jian-Hua Wang Wei-Guo Tian MOE Key Laboratory of Petroleum Engineering State Key Laboratory of Petroleum Resources and EngineeringChina University of Petroleum(Beijing)Changping DistrictBeijing102249China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering PlasticsInstitute of Chemistry Chinese Academy of Sciences(CAS)Haidian DistrictBeijing100190China MOE Key CNPC Drilling Research Institute Changping DistrictBeijing102206China

A low-cost eco-friendly aqueous foam,especially the robust foam with great tolerance to high salinity and high temperature,is in great demand in the oil industry,e.g.,oil and gas well or geothermal well ***,an ultra-stable aqueous foam was developed using the biodegradable cellulose microfiber(CMF)as a foam *** foam stabilized by CMF shows excellent tolerance to the high concentration of NaCl(6.0 wt%)and CaCl_(2)(0.25 wt%)and the related drainage half-life times(T_(0.5))reach 1750 and 2340 s *** contrast,the foams without CMF are completely drained(T_(0.5)=0 s)when NaCl concentration is greater than 6.0 wt%or CaCl_(2) concentration is greater than 0.20 wt%.Notably,T0.5 of the foams stabilized by CMF at these saline concentrations still can maintain above 1000 s even after aging at 120℃ for 16 h,exhibiting an outstanding foam-stabilizing performance at high *** results suggest that the salt and high-temperature tolerance of CMF in foam stabilization is attributed to the electrically uncharged surfaces,the formation of a gel-like structure and the excellent thermal *** work not only provides a promising candidate of aqueous foam stabilizer to deal with high temperature and high salinity but also presents a natural-based solution for an environmentally friendly drilling industry in the future.

关键词： Aqueous foam Foam stabilizer Cellulose microfiber Salt tolerance Sustainable

China's Development Brings Opportunity to the World

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qiu shi 2018年第4期10卷 13-19页

作者： qiu shi 不详

In 1978,China embarked on the grand journey of reform and opening *** the last 40 years,China has not only achieved its own rapid and healthy development, but also made important contributions to the noble cause of hu... 详细信息

关键词： Development Brings Opportunity

Soeialism with Chinese Charaeteristies for a New Era:a New Stage in the Development of Seientifie Soeialism

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qiu shi 2018年第4期10卷 20-25页

作者： qiu shi 不详

For the last 500 years,one great saga after another of prosperity and decline,success and failure has played out for socialism on the stage of human *** have been both triumphant advances and flustrating *** the late 1980s and early 1990s,world socialism encountered serious difficulty with the dissolution of the Soviet Union and dramatic changes that swept across Eastern Europe.

关键词： Seientifie Soeialism Soeialism

Building a Moderately Prosperous Society in All Respects： A Crucial Step for Realizing the Chinese Dream

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qiu shi 2015年第4期7卷 21-26页

作者： qiu shi