苏式仓改建后机械通风准低温储粮

苏式仓经过改建后仓容增加到原来的3倍,双门、双窗、双顶、双墙的设计,配合机械通风降温,使改建后堆高6－8m的粮温比原苏式仓粮温低10℃-12℃,全年大部分时间保持在20℃以下,基本保持准低温状态,既有利于保持粮食品质,又达到改建后增加仓容、改善储粮条件的目的。     

高大平房仓在低粮面情况下机械通风降水降温的探索

在高大平房仓管理中,由于数量限制等原因,常存在入粮高度达不到装粮线或半仓情况,使原本按装粮线高度设计的机械通风风网出现空气途径比>1.5,不能满足通风的需要。一些储粮单位曾做过支风道之间单管风机配合,或支风道正上方压盖聚乙烯薄膜的研究。但在实际工作中,单管风机能耗大,劳动强度大,通风不均匀、聚乙烯薄膜不易操作,效果不好。针对这一问题,我库进行了高大平房仓内低粮面通风降水降温的生产性试验。通过对多种方案的对比,探索出一套经济有效的通风方法,取得了良好的降水降温效果。     

轴流风机在提高粮仓机械通风效率和均匀性中的作用

轴流风机作为粮仓机械通风的重要设备,主要用途为独立或辅助排放粮层表面和屋顶下的积热,其使用的合理性对提高整体通风降温效率和均匀性有较大的影响,对节能保粮也具有指导作用.本研究运用计算流体动力学数值模拟方法,对轴流风机辅助粮仓机械通风操作中的多种使用方案进行了对比研究,定量评估了相应的降温效果.此项研究的方法和结果可为轴流风机设计布局的优化和科学使用提供理论依据.     

粮堆通风工艺设计及其实例

图14砖圆仓竹笼风道与排风扇布置图5地上垄通风系统实例地上垄管道截面通常为圆形、半圆形、三角形、矩形、方形等。其管道设在地坪上,但可以移动,已在第六章中详述。其特点是简单易行,适用于已建仓房较大规模的通风降温降水。能获得较好的通风效果。其不足之处是地上垄高出地坪,不便于粮食进出仓的机械作业,且地上垄易损坏,但其开孔面积较大。（实例）某仓长21．6米,宽15米,仓库堆积高度约4米,内装稻谷90万公斤（G＝900吨）,粮食水分为安全水分,现往粮堆中通以经选择的空气,用于降温。若将风道做成半圆形、矩形、拱形、圆形、…     

大型钢板仓机械通风降温系统的设计与使用

我库制粉车间共有10个大型钢板仓，每个储存小麦1300吨，过去由于缺少机械通风降温系统，以至发生了多起霉变坏粮事故。造成了严重的经济损失。为了确保安全储粮，我们在96年4月设计安装了小麦钢板仓机械通风降温系统（详见结构示意图），应用后取得了显著成效。下面就该系统的设计与使用情况做一简要介绍。1目的粮食在储藏过程中具有新陈代谢的性质。粮食水分大小及温度高低对这种代谢过程发生的快慢起着一定作用。小麦在安全水分（≤13．5％）的条件下，保持其生活力的最高温度为20～28℃。钢板仑机械通风降温系统结构示意图设计小麦钢板…     

储粮通风减损技术在滇西地区的应用

2011年冬季对2号仓（玉米）、3号仓（籼稻）、6号仓（小麦）、15号仓（粳稻）4个试验仓进行节能减排通风减损实仓试验。当引入粮堆后的仓外空气的相对湿度大于等于粮食水分增加2％时粮堆空气的相对湿度,但小于粮食水分增加3％时粮堆空气的相对湿度同时外界温度与粮温温差大于等于6℃时利用轴流风机进行通风。冬季通风结束后2号仓平均粮温9．9℃,水分增加0．1％,3号仓平均粮温9．1℃,水分增加0．9％,6号仓平均粮温11．4℃,水分减少0．1％,15号仓平均粮温10．2℃,水分增加0．1％。     

浅圆仓通风系统工艺设计探讨

浅圆仓是新仓型,通风系统的工艺设计需进一步探讨和完善,本文着重探讨通风地槽的布置形式和粮层气流阻力的计算方法。     

流态化卸粮装置在浅圆仓中的应用

根据空气动力学原理，利用流态化卸粮系统取代清仓机械，实现浅圆仓卸粮机械化作业，同时也可用于浅圆仓粮食的通风降温。     

密闭隔热通风降温对立筒仓安全储粮的作用

根据立筒仓储粮粮情变化规律，结合实际工作经验，在做好筒仓围护结构密闭隔热及防潮处理的基础上，利用冬季低温天气，进行通风降温，并在气温回升之前对降温仓进行隔热密闭。通过三年多的筒仓储粮实践证明：密闭隔热通风降温储藏技术对立筒仓长期安全储存小麦有积极的作用。     

粮食仓内通风干燥的控制系统

仓内控制系统用于粮食的通风降温和粮食的自然通风及补热干燥的控制中。这两种控制的目的是不同的，因此分开讨论。1通风降温通风的主要目的是把在12－15％水分下贮存的粮食周围温度保持在3—6（”。通风的过程是以0.001－0．11m3／mint的流速让周围的空气吹过粮难。由一个通风控制器决定在什么时候通风和需要通风多长时间，最高级的可编程通风控制的需要测量周围空气的温度和相对湿度及粮食的温度和平衡柏对湿度。控制器使用了两个探查位置：一个是风机的进口；另一个是仓内粮食最容易升温和变质的位置。（即：空气气流最小的区域，仓中心…     

纳米技术在聚烯烃中的研究进展

综述了聚烯烃纳米复合材料的优点、使用价值和近年来国内外聚烯烃纳米复合材料的研究进展，并介绍了无机粒子／聚烯烃复合材料和粘土／聚烯烃复合材料，重点阐述了粘土与聚乙烯、聚丙烯纳米复合材料的制备方法及粘土／聚烯烃纳米复合材料插层热力学分析，对目前聚烯烃纳米复合材料存在问题及发展前景进行了探讨。     

Healthy Investments in Investing in Health

This article discusses socially responsible investing (SRI) and tobacco. SRI allows investors, both institutional and individual, to express their concerns and make their social and ethical stands known to the companies they invest in and patronize. The tobacco industry is active in every country on the globe and generates huge profits, while tobacco use is responsible for 4 million deaths every year.The authors explore past and current views on investment in tobacco, partly based on a survey conducted by the Tobacco Free Initiative of the World Health Organization (WHO). There is clearly a trend toward divestment from tobacco for both ethical and financial reasons. Tobacco-free investments can be both ethically sound and financially profitable.     

Developments in Consumer Protection in India

This paper surveys the major developments in the field of consumer protection in India since 1984, when the statutory provisions for regulating unfair trade practices were incorporated for the first time.Among the developments described in the paper is the strengthening of provisions for consumer protection through amendments to the Act regulating restrictive and monopolistic trade practices (the MTRP Act). Public-sector undertakings and co-operative societies have been brought within the purview of the Act, and consumers have obtained the right to participate in inquiry proceedings before the MRTP Commission.Consumers and their associations have been given the right to seek redress of grievances arising out of the violation of certain pieces of legislation, including the Drugs and Cosmetics Act. The Consumer Protection Act, 1986, was enacted in order to provide speedy and inexpensive redress of consumers' grievances. Redress can now be sought before any consumer court also for negligence or deficiency in medical services.The Bureau of Indian Standards Act, 1986, has strengthened the measures for the standardisation and quality control of manufactured goods.A Consumer Welfare Fund has been set up to provide financial assistance to voluntary consumer organisations and for the general development of consumer movement in the country. A spurt in voluntary consumer organisations in different parts of the country can also be observed.Other developments include the establishment of a separate Department of Consumer Affairs in the Union Government and the setting up of a Consumer Product Testing Laboratory.     

关于我国资产证券化若干问题的探讨

资产证券化是一项复杂的金融工具创新,引进和实施这种新型的融资工具需要大量的配套工作。我国实施资产证券化需要解决特设机构的设立、基础资产的选择、破产隔离、信用增级、会计处理、税收政策以及立法和监管等方面的问题。     

Economic Keywords in 2007 in China

RMB exchange rate The exchange rate of Renminbi,the Chinese currency, witnessed an appreciation of around six percent to one U.S. dollar this year. On December 13, the central parity rate stood at RMB 7.3568 against one dollar,according to the Chinese Foreign Exchange Trading System, breaking the 7.36 mark.     

Conflict in Supplier–Retailer Relationships in the Brewery Industry in Cameroon

The authors develop a theoretical framework to explain conflict in supplier–retailer relationships. In addition to traditional influence strategy variables, the framework links conflict to retailer dependence and supplier formalization. The framework is empirically tested in the Cameroonian brewery industry. The findings support the view that channel conflict is inversely related to retailer dependence and supplier formalization. Contrary to expectations, the use of noncoercive influence strategies (information exchange and recommendations) has no significant effect on conflict, while, as expected, the use of coercive influence strategies (threats and promises) increases conflict.     

2007年网络营销五大趋势

到今年3月份．中国互联网在商业领域的应用已经整整十年。这十年间尤其是后五年，网络技术的发展为网络营销提供了越来越大的探索空间．2007年的网络营销蓬勃发展的态势无疑可以用”井喷“来形容。任何媒体的发展都需要有大事件来激活，以使其能量深度激发，而07年及07后可以成为引发网络营销全面跃升的大事件，毫无疑问是奥运会。所以．在探讨2007年的网络营销趋势时，站在体育营销的基点才不会迷失方向．除此之外也会有一些新的趋势。     

Determinanten der Verweildauer in Arbeitslosigkeit in Deutschland

Die hohe und andauernde Arbeitslosigkeit geh?rt zu den dringendsten wirtschaftspolitischen Problemen in Deutschland. Ist die Fixierung auf die absolute H?he der Arbeitslosigkeit berechtigt? Welche Rolle spielen die Str?me und Bewegungen auf dem Arbeitsmarkt? Welches sind die Determinanten der Verweildauer in Arbeitslosigkeit?     

Trends in Executive Education in Business Marketing

ABSTRACT

Business marketers in the 21st century are grappling with the harsh, tough demands of a consolidated customer base, rapid product and service commoditization, complex channel structures, and hyper-competition in a rapidly evolving, information-intensive global economy. Across the globe, firms concerned with developing managerial talent to respond to these trends are demanding and expecting changes in the executive education programs offered by business schools. We consider in this paper a number of recent trends and changes in customer expectations, program format, content development and delivery, and program marketing that we have observed in executive education in the field of business marketing.