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1.
文章主要研究了棉花纤维品质检验的技术及内容。本文主要从棉花纤维品质检验内容着手,对棉花纤维品质检验发展现状进行探究,深入挖掘了棉花纤维检验技术。与此同时,文章还在该基础上对棉花纤维品质检验发展趋势进行探究,对棉花纤维检验发展方向进行展望。文章对棉花纤维检验技术的改善具有一定的贡献性作用。 相似文献
2.
随着我国的纺织业进一步发展,我国已经成为了世界上最大的棉花生产国和使用国,因此,保障棉花的质量就显得尤为重要。棉花在生产、流通和使用环境等几个方面的变化,也迫使我国在棉花的质检上进行了一系列的体制改革。如何加强和完善我国棉花质量保障体系,也就关系到我国的纺织工业和棉花产业的健康发展。文章将通过对棉花质量的现状分析,来探讨一下棉花的质量保障体系的相关问题。 相似文献
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2019年,我国棉花主产区新疆维吾尔自治区的棉花产量继续保持全国最高,达500.2万吨,虽较2018年下降2.1%,但占全国总产量比重同比增加1.1个百分点,达84.9%。新疆土质偏碱性,夏季温差大,日照时间长,无霜期长,特别适宜种植棉花,独特的地理气候条件,使得新疆棉花品质好、产量高。作为我国主要的棉花生产基地,新疆棉花总产、单产、种植面积、商品调拨量连续25年位居全国第一。 相似文献
4.
中国是世界上棉花种植面积最大的国家之一。十一届三中全会以来,我国的棉花科技与生产得到了长足的发展。30多年来．我国自主育成的棉花新品种不断更新和大面积推广,有力地促进了我国棉花生产的不断发展,促进了主要棉区的农村经济发展和农民增收．也为我国纺织服装工业的快速发展提供了坚强的产业基础支持。 相似文献
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"国以农为本,农以种为先"。优良品种不仅是棉花生产的基础,在很大程度上也是棉花科技发展与创新的主要对象。过去十多年来转基因抗虫棉的发展,无疑是我国棉花育种历史上的又一个里程碑。抗虫棉对我国棉花生产所发挥的作用,无论怎样评价 相似文献
6.
棉花是关系到国计民生的大宗农产品之一,在我国国民经济中起着至关重要的作用。近几年我国棉花生产的起伏波动直接影响了纺织工业的正常组织和生产,影响了我国纺织品出口创汇,特别是由于棉花资源的紧张而引发的一系列矛盾在一定程度上影响了我国国民经济持续、稳定、协调发展。为了对我国棉花产、需情况进行深入研究,我们先后走访了农业部、 相似文献
7.
“五月棉花秀,八月棉花干;花开天下暖,花落天下寒。”——清·马苏臣
棉花开了,预示着天下人温暖有保障;棉花萎落了,那人们可要挨冻了。在我国这样一个棉花生产大国、进口大国、纺织工业大国、纺织品服装消费和出口大国,棉花历来是国家一级战略性物资．对国计民生、纺织工业以至整个国民经济发展都具有举足轻重的作用。 相似文献
8.
棉花生长发育、产量的高低以及品质的优劣与气候条件息息相关.当气候条件能充分满足棉花整个生育期正常生长和发育时,不仅可以满足其发育进程的需要,还可以获得较好的收成,并能提高棉花品质和等级;相反,当气候条件不利时,则会抑制棉花生长发育,使产量下降、品质降低.气候灾害一般可导致减产20%~30%,甚至更高.为此,要利用气候状况和指标综合分析棉花整个发育时段气候条件的优劣,以优避害,采取多元化、科学化等强有力预防措施,减轻危害,夺取棉花高产和优良的品质 相似文献
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10.
棉花是关系国计民生的重要生产资料和生活资料,在我国经济发展中一直处于十分重要的地位。因此,“八五”期间我国棉花生产与需求之间的平衡必然成为党和国家十分关注的问题之一。本文拟通过我国棉花产需现状以及“八五”期间产需趋势的定性、定量分析,对“八五”期间我国棉花产需趋势进行预测,并提出“八五”期间发展棉花生产、缓解产需矛盾的一些设想,为有关部门制定计划、作出决策提供参考依据。 相似文献
11.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
12.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
13.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
14.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
15.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
16.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
17.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
18.
Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
19.
Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
20.
Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献