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Search Results: 1 - 10 of 506112 matches for " <br>王代钢 "
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Construction and empirical analysis of eco-sericulture technology system in Qin-Ba Mountain Area
秦巴山区生态蚕业技术体系构建与实证分析

WANG Dai-Gang,<br>
中国生态农业学报 , 2013,
Abstract: Sericulture production technology has gradually changed from dispersed small-scale mode to intensive large-scale mode in China. This has greatly increased not only labor force production efficiency in sericulture, but also rural sericulture production income. Concurrently, however, the ecological effectiveness has been insufficient for intensive sericulture technology system. Sericultural production waste has polluted rural ecological environments. To resolve the issue of ecological inefficiency in sericulture technology system and low used efficiency of sericulture resource material, a research was conducted on intensive sericulture technology framework using utilization ratio of annually biosynthesized dry matter in mulberry as a measurement index. For evaluation, the balance was set for technology productivity efficiency and ecological efficiency. Under an integrated eco-sericulture technology system, individual technological balance was evaluated in terms of three efficiencies - technological efficiency, economic efficiency and ecological efficiency. This innovative application of production mode and reflux mode in sericulture resource material optimized sericulture resource material use mode, controlled pollution degree of production wastes in rural ecological environments and formed eco-sericulture technology system frameworks. The frameworks included mulberry branch edible fungus industry production chain, silkworm excrement biogas control pollution and recycled link of filature waste water. Application of eco-sericulture technology system in rural Qin-Ba Mountain Area improved ecological efficiency of sericulture production technology, significantly increased use efficiency of sericulture resource material and environmental water resource and improved rural ecological environment conditions. The estimates for Shiquan County in Shaanxi Province suggested that production and utilization efficiency of sericulture resource material increased by 20.8%, mulberry branch edible fungus industry production was at 10 million bag·a-1, reflux utilization increased by 52.9%, avoided loss of sericulture resource materials, recycled environment water resources ratio was at 70.4% and total circulation water recovery/utilization was at 992 m-3·d-1. Discharged waste water CODCr (the chemical oxygen demand was used by potassium dichromate as oxidant) was <85 mg·L-1, which met national standards - Integrated Wastewater Discharge Standard (GB8978-96). Eco-sericulture technology system therefore not only reduced pollution from sericulture production in rural ecological environments, but also stabilized sustainable development of sericulture production in the Qin-Ba Mountain Area.
秦巴山区生态蚕业技术体系构建与实证分析

中国生态农业学报 , 2013,
Abstract: 为了解决集约养蚕技术体系生态效能不足,蚕业生产废弃物污染农村生态环境问题,在集约养蚕技术体系构架上,以桑树年生物合成总干物质利用率为衡量指标,采用技术生产力效能与生态效能平衡集合评价方法,对集成到生态蚕业技术体系内的各单项技术进行技术效益、经济效益和生态效益的"三效"平衡评价;应用蚕业资源物质生产利用技术模式和回流利用技术模式,优化蚕业资源物质流向利用方式,控制生产过程废弃物污染农村生态环境程度,形成以桑枝食用菌产业化生产链、蚕沙沼气治污和缫丝生产废水循环利用链为构架的生态蚕业技术体系。生态蚕业技术体系在秦巴山区农村应用以来,有效提高了蚕业生产技术的生态效能,蚕业资源物质生产利用效率提高了20.8%,回流利用效率达52.9%,环境水资源循环利用效率达70.4%,排放废水的CODCr(采用重铬酸钾作为氧化剂测定出的化学需氧量)<85mg·L-1,达到国家《污水综合排放标准》(GB8978-96),有效减轻了蚕业生产污染农村环境的程度,改善了秦巴山区农村生态环境状况。
Influence of rapid temperature drop on acidification activities in anaerobic digestion
厌氧消化过程中温度骤降对酸化活动抑制性的研究

Wu Yun,Zhang Daijun,Yang Gang,<br>吴云,,
环境工程学报 , 2010,
Abstract: Temperature is an important influencing factor in anaerobic digestion. A rapid temperature drop during anaerobic acidogenesis in an anaerobic reactor system resulted in the sharp suppression of carbohydrate decomposition and production of volatile fatty acids. When the temperature was dropped from 30℃ to 25, 20 and 15℃ sequentially, the numbers of bacteria were slowly reduced without showing temperature shock. The acidogenesis, however, was dramatically affected after each temperature drop; the removal efficiency of carbohydrate was reduced from 89% to 81%, 72% and 25% with showing the minima of 78%, 52% and 10% due to the rapid temperature drop respectively. This indicated that the acidogens lost the activities momentarily during the rapid temperature drop and required certain period of time to recover the activities after the changes of fermentation temperature.
Modeling method of multivariate statistical control chart for small-batch manufacturing process quality
小批量多元控制图建模方法研究

LI Gang,DAI Hai-fei,<br>李,海飞
计算机应用 , 2008,
Abstract: Based on the study of multivariate statistical process quality control chart and small-batch manufacturing process, a kind of synthetical modeling method was put forward to deal with multivariate statistical process for small-batch manufacturing. Practical application and emulational instance show that this modeling method can make the best use of the obtained data, build control model dynamically, consequently resolve the problem of lacking modeling data in small-batch manufacturing process.
Experimental Study on the Control of Stayed-Cables'' Vibration with Integral Strain Feedback(ISF) Control Method
斜拉索横向振动的积分应变反馈控制实验研究

WANG Daihua,<br>
实验力学 , 1999,
Abstract: An active control method based on Integral Strain Feedback (ISP) principle and used for the vibration control of stayed cables is presented, and also the method for sensing the dynamic strains with PVDF piezoelectric films struck on the surface of cables. An experiment on the proportional model of a stayed cable is given and explained. The results show that the ISF control method can effectively suppress the stayed cable's transverse vibration, and that the method is easy to conduct.
现代企业对PDM的新要求
,
重庆大学学报 , 2003, DOI: 10.11835/j.issn.1000-582X.2003.01.030
Abstract: 在现代社会中,企业不仅需要进行内部信息交流,而且还要与外界进行信息交流,同时企业要求管理产品整个生命周期的数据。而已有的PDM(ProductDataMangement)在功能、和管理范围上已经不可能满足现代企业的要求。现代企业不但要求PDM管理产品整个生面周期的数据,以便于产品数据的检索和管理;而且还要求PDM在功能上能够扩展,保障企业网络信息共享的最大化、满足企业内外部协同设计的要求、方便供应商和合作伙伴等参与产品数据管理。从PDM的发展入手,分析说明如何进行PDM的扩展才能满足现代企业的需求。
Knowledge, Routines and Performance in Collective Problem Solving
集体问题解决中的知识、惯例和绩效

WANG Jian-An,ZHANG Gang,<br>建安,
心理学报 , 2008,
Abstract: 在Cohen和Bacdayan发明的两人TTT纸牌游戏的基础上开发了三人TTT游戏,并以此为实验任务,考察了三人集体问题解决活动能否形成惯例,比较了有问题图式组和无问题图式组之间在惯例和绩效上的差异.实验结果表明:(1)三人问题解决能够形成惯例;(2)有图式组的惯例化程度总体上低于无图式组,而其惯例化程度提高的速度则快于后者;(3)无图式组的绩效高于有图式组,但前期差异显著,后期不显著.这些结果将前人基于两人TTT游戏所做的惯例研究进一步拓展到三人情境,证实了三人互动中惯例的生成,为研究涉及更多人互动的真正意义上的组织惯例奠定了基础;阐明了知识,特别是前人在组织惯例研究中所忽视的陈述性知识,对于惯例形成和绩效提升的影响,并揭示了其在组织管理和决策活动中的实际意义.
ETHNIC IDENTITY OF TIBETAN UNDERGRADUATES
藏族大学生的民族认同

Wan Minggang,<br>万明,亚鹏
心理学报 , 2004,
Abstract: As a member of minority nationalities, after Tibetan undergraduates entered other cultures from their familiar mother culture, on the one hand, they faced dilemma of ethnic identity, on the other hand, they faced torture of acculturation, and at the same time, they also faced disturbance of mental alienation. Combining with qualitative and quantitative study, this study employed 285 Tibetan undergraduates to examine relationships among Tibetan undergraduates, ethnic identity, acculturation and mental alienation. The results showed that:1,Tibetan undergraduates, ethnic identity mainly involved in three aspects: negative ethnic identity, positive ethnic identity and mainstream culture identity. Different aspects of ethnic identity were affected by different factors. But generally speaking, Tibetan undergraduates, ethnic identity might be predicted by the number of Han nationality friends, by the time of learning Chinese, by parents' nationality identity and the reception of Han nationality.2,There existed abroad positive correlation or negative correlation between ethnic identity and acculturation strategies.3, There existed remarkable positive correlation between negative ethnic identity and normlessness, social loneliness and culture separation;But there was no remarkable correlation between host culture identity and positive ethnic identity and normlessness, social isolation,culture separation and self-separation.
AN INVESTIGATION ON THE BILINGUAL TIBETANS''ATTITUDETOWARD THEIR NATIVE LANGUAGE AND CHINESE
藏族双语人双语态度的调查研究

Wan Minggang Wang Jian,<br>万明,
心理学报 , 1997,
Abstract: Questionnaires, interviews and observations were used to investigate bilingual Tibetan adults, attitude toward their native language and Chinese, their attitude toward the selection of Tibetan or Chinese in different communicative contexts, and their attitude toward the transformation of one language code into another The result of the investigation showed that most of the bilingual people have a deep feeling for their native language, and a strong inclination to keep their own language. The factor of feeling plays an important part in the attitude of the bilingual people toward their native language, while in the attitude toward Chinese language their is something more rational or cognitive than emotional. They show a positive attitude toward learing Chinese in order to master it. but when it comes to the viewpoint of replacing Tibetan with Chinese, their attitude turns to be negative, Bilingual people mainly use their own language in the family and among their own people. lf one Tibetan speaks in Tibetan,while the other responds in Chinese or in Tibetan mingled with Chinese, it is not welcome.
A PRELIMINARY STUDY ON THE RADISH-CYTOPLASM MALE STERILE LINES OF RAPE (BRASSICA NAPUS)
萝卜细胞质甘蓝型油菜“三系”研究初报

Wang Gang,Luo Hongyuan,<br>,罗鸿源
植物科学学报 , 1986,
Abstract: Restoring ability for Radish-cytoplasm Rape (Brassica napus) male sterile lines was discovered in Vegetable A and its hybrid progenies in March, 1984. From the plants mentioned above 5 complete restorers were screened out during summer propagation in Kunming, Yunnan Province in the same year. This has laid the fundation for obtaining the complete set of the "Three Lines" of Radish-cytoplasm Rape (Brassica napus). The first discovery of the restorative origin has satisfactorily solved the problem at home and abroad that the male sterility is accompanied with a lack of chlorophyll in the central leaves.
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