“九五”以来农作物育种项目进展

在“八五”各农作物育种积累的基础上,通过及时调整育种目标,扩大亲本来源,以杂交育种为主兼顾引种,新配杂交组合2809个,筛选积累了333个优异新品系和上万份杂交后代材料,收集国内外豆薯类育种材料82份;共育成审定新品种18个,其中春青稞5个、冬青稞6个、冬小麦3个、春小麦2个、油菜2个;包括八五后期育成品种在内,新品种累计推广面积超过80万亩,为十五育种奠定了物质技术基础。

思想品德课教学中开展社会实践活动模式的探析

随着思想品德课教学具有时代性、实践性、思想性。在思想品德课中增加社会实践活动,收集社会实践的模式,符合新课标提出的以德育为核心,以培养创新精神和实践能力为重点,全面推进素质教育,有利于学生的自我发展、自我完善、健全学生人格,实现人生价值。

辅品与礼品牵手

礼品的种类与年俱增，其中包括越来越多的家纺装饰辅品。近年来，越来越多的家纺企业厂商，纷纷把目光投向了礼品暨装饰辅品的生产，他们对礼品及辅品贸易展中的产品情有独钟，对展示中集智慧与现代精神于一体的礼品及装饰辅品深感兴趣。

eBay平台吹响中国汽配品牌集结号，汽配出海前景广阔

2019年12月3日,第十五届法兰克福上海国际汽车零配件、维修检测诊断设备及汽车用品展览会在上海国家会展中心盛大开幕,此次展会吸引了来自18个国家和地区的超过6000家参展企业,汇聚了大量汽配龙头企业和品牌。作为唯一参展的跨境出口电商平台,eBay召集优质卖家开启“灯塔计划”观展采购活动,不仅有来自中国的卖家,更有来自泰国、马来西亚的国外卖家加入eBay“灯塔计划”国际采购团。

博物馆保护框架下的非物质文化遗产藏(展)品征集

博物馆多年的非遗保护实践,彰显非遗在辅助博物馆语境转换、拓展博物馆社会教育途径、提升公众介入博物馆非遗话题能力等方面有其独特的优势。基于当前博物馆非遗藏(展)品征集工作尚在开拓阶段,从博物馆非遗藏(展)品征集概念框定和现实需求角度来看,非遗藏(展)品征集存在价值认定、为展而征、介入偏差、经费不足等现实问题,需要建立完善的征集制度和实施机制、提升征集队伍的业务素养、拓展高效利用新途径、多元筹集专项经费。围绕博物馆非遗藏(展)品理念厘清“物”与“非物”、“征”与“用”两对关系,界定征集主体、适度分类等遴选原则,以推进非遗科学展陈、活态输出,引导公众对非遗产生认同及观照,进而确保博物馆功能更好的实现。

系列化珠宝更受藏家青睐

作为既能佩戴、又能升值的艺术品,珠宝首饰近年来越来越受到藏家的青睐。近期中国嘉德、天成国际等拍卖行纷纷推出了今年春拍的珠宝拍品,从这些拍品的构成来看,系列化珠宝越来越受到藏家青睐。共享致美盛宴中国嘉德2019春季珠宝臻品展将以展卖洽购的形式亮相。

The Present Situation and Development Countermeasures for Meat Products Industry in Henan

This paper introduces the development and present situation of meat industry in Henan Province so as to get comprehensive understanding of this industry,including the advantages and insufficiencies of this industry,and then puts forward some countermeasures for the future development of the meat products of Henan Province,to realize the rapid,healthy and sustainable development of meat industry in Henan and create huge economic and social benefits in Henan.

An Overview of Research on Microbial Herbicide

The development of microbial herbicide for weed control has been serious- ly regarded all over the world and has made rapid progress in recent years. This paper presents a comprehensive review on domestic and abroad research progress of microbial herbicide and mainly introduces the microbial herbicide products and mi- crobial sources with commercialization potential, and then proposes an outlook for their development tendency and application prospect.

Analysis of developing non-timber forest products of Sanjiang Plain, Northeast China

The Sanjiang Plain is a vast area of alluvial floodplains and low hills in northeast Heilongjiang Province. Because of the excessive land reclamation in the past, the whole forest area and the quality have decreased. In the view of sustainable development, this paper analyzed the possibilities for Non-timber Forest Product in terms of developing potentialities, markets, social effects and the status of NTFPs in several counties of Sanjiang Plain. The result showed that, active development and management for NTFPs is an optimistic option to how to balance the wetlands conservation and sustainable economic development.

Task Decomposition Technique's Deduction and Application of Product Developing Process in Concurrent Engineering

Task decomposition is a kind of powerful technique increasingly being used within industry as a pathway for achieving product's developing success. In this paper, topology's concept in modern mathematics is used for task decomposition technique's deduction in product developing process. It puts fonvard the views of resolvability, measurability and connectivity of tasks and their practi-cal principles. Combined with an example of developing the typical mechanical product, it ex-plains the implementing method of task decomposition in Concurrent Engineering (CE).

Dynamics of Spreading of Liquid on Solid Surface

Based on assuming that there is the precursor film in the front of the apparent contact line （ACL）, a model was proposed to understand the dynamic wetting process and associated dynamic contact angle. The present model indicated that a new dimensionless characteristic parameter, 2, attects the dynamic wetting process and associated dynamic contact angle as well. However, the previous model suggested that the dynamic contact angle is dependent＇on the capillary number and static contact angle only. An experimental investigation was conducted to measure the dynamic wetting behavior of silicon oil moving over glass, aluminum and stainless steel surfaces. It concluded that when the value of 2 was selected as 0.07, 0.16 and 0.35 for glass, aluminum and stainless steel, respectively, the experimental results were in good accordance with the prediction of the model. Furthermore, the comparison of the model with Strom＇s experimental data showed that 2 is independent on the species of liquids. Apparently, 2 should be interpreted as the effect of the solid surface properties on the dynamic wetting process.Meanwhile, it is found in the present experiment that the Hoffman-Voinov-Tanner law, which is valid at very low capillary number （Ca 〈〈 1 or 80〈 10°） recommend by Cazabat, still holds for higher contact angles, even up to 70°-80°. This is explained by （he present model very well.

Three Major Effects and Guarantee System for Quality Management of Edible Mushroom Products

In order to provide consumers with more safe and edible fungus products and to create a faithful social environment of food quality, the edible fungus products quality safety events, as well as their evoked factors and effects on edible fungus industry were discussed in depth in this paper. The performance of edible fungus products quality management is a comprehensive reflection of technical effect, control effect and implementation effect. Among them, the implementation effect is the most important, which refers to the actual implementation effect of quality and safety rules by practitioners of edible fungus industry. Thus, the initiative implementation effect in quality management will be improved, and a quality assurance system in which practitioners are volunteered to participate and implement initiatively the quality standards and regulations so as to provide safe and high-quality products will be established, thereby achieving the best actual implementation effect in quality management.

The role of new ICTs in the sustainable development of industrial cluster:a case study of Yangxunqiao textile cluster

The wide application of new information and communication technologies(ICTs)has been argued to be critical in local economic development,while the application of new ICTs will affect the development of industrial cluster,especially those small and medium-sized enterprises(SMEs).This paper examines Yangxunqiao textile cluster located in Zhejiang Province as a case study to focus on the role of ICTs in the sustainable development.We argue ICTs application in firms boost flexible and customized production approach,improve e-commerce market channel and raise supply chain management.We also pay special attention to the spatial implication of ICTs adoption in industrial cluster,and suggest that application of ICTs tend to lead to further clustering of SMEs in the location with mature production chain.Our analysis shows that new ICTs are a facilitator in the sustainable development of the industrial cluster.

The VP2 protein of grass carp reovirus(GCRV) expressed in a baculovirus exhibits RNA polymerase activity

The double-shelled grass carp reovirus （GCRV） is capable of endogenous RNA transcription and processing.Genome sequence analysis has revealed that the protein VP2,encoded by gene segment 2 （S2）,is the putative RNA-dependent RNA polymerase （RdRp）.In previous work,we have ex-pressed the functional region of VP2 that is associated with RNA polymerase activity （denoted as rVP2390-900） in E.coil and have prepared a polyclonal antibody against VP2.To characterize the GCRV RNA polymerase,a recombinant full-length VP2 （rVP2） was first constructed and expressed in a baculovirus system,as a fusion protein with an attached His-tag.Immunofluorescence （IF） assays,together with immunoblot （IB） analyses from both expressed cell extracts and purified Histagged rVP2,showed that rVP2 was successfully expressed in Sf9 cells.Further characterization of the replicase activity showed that purified rVP2 and GCRV particles exhibited poly（C）-dependent poly（G） polymerase activity.The RNA enzymatic activity required the divalent cation Mg2＋,and was optimal at 28 ℃.The results provide a foundation for further studies on the RNA polymerases of aquareoviruses during viral transcription and replication.

Solubility Behaviour of Cellulose in a Sodium Hydrate/Urea/Thiourea Aqueous Solvent

Cellulose pulps were directly dissolved in a green solvent of sodium hydrate/urea/thiourea/water with different composition for the purpose to prepare new regenerated cellulose fibers or films. The results showed that the highest solubility of cellulose in the solvent with the composition of 8/8/6.5/77.5. The results revealed that the pulp feeding sequence, stirring rate, pre-treatment of pulp and pulp size affected the cellulose concentration in the green solvent. Accordingly, the more effective dissolution method was proposed in order to get higher concentration of cellulose. Furthermore, the properties of solution prepared by different kinds of pulps in the solvent were investigated by ARES rheometer. Rheologieal analyses indicated that all cellulose aqueous solutions in their high concentration were pseudoplastic fluids and sensitive to temperature and tended to transform to gel when temperature increased.

Advances in the Study of Protein Quality Traits and Main Influencing Factors of Wheat in China

Wheat, the third major grain crop in China, is an important source of hu- man proteins. Wheat quality and yield has a direct impact on the development of agricultural economy and food industry. Investigating and improving protein quality of wheat has become a key to solving the contradiction. This paper reviewed the exist- ing literature published at home and abroad, analyzed the present situation and ex- isting problems of wheat protein quality in China, summarized the latest research progress about genetic models, main influencing factors, and correlations between protein quality traits and other traits, discussed current issues in the improvement of wheat protein quality, and proposed suggestions for breeding high-quality wheat, aiming at providing theoretical basis for genetic improvement, planting structure ad- justment and efficient production of high-quality wheat.

Synthesis and characterization of switchable ionic compound based on DBU, CH_3OH, and CO_2

Switchable ionic compounds have wide applications in chemical processes.A switchable ionic compound based on 1,8-diazabicyclo-[5.4.0]-undec-7-ene(DBU),CH_3OH and CO_2 was synthesized and characterized.DBU/CH_3OH/CO_2 ionic compound was prepared in the presence of excess methanol,and then the excess methanol was removed by reduced pressure distillation in CO_2 atmosphere.The product yield(100%) reached the theoretical maximum for the first time.Its structure was identified by NMR,FT-IR,and XRD.The crystal product shows 8strong peaks in XRD at 2θ values of 16.0547°,16.4308°,16.7651°,18.8714°,19.2140°,21.9471°,22.0780°,and25.5661°.Its decomposition onset temperature(53 ℃) was affirmed by TGA,which is lower than its melting point.And its ionic switch point was measured by conductivity.

Environmental damage costs from fossil electricity generation in China, 2000~2003

Electricity consumption increases rapidly with the rapid development of China. The environmental damage costs of electricity generation are very important for both policy analysis and the proper management of the environment. A method was developed in this work to estimate gross environmental damage costs according to emission inventory and environmental cost factors, and to extend the costs from provincial to national level with population density. In this paper, sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter less than 10 μm in diameter (PM10), and carbon dioxide (CO2) from fossil fired power plants over 6000 kW were selected as index pollutants to quantify the environmental costs of damages on human health and global warming. With the new developed method, environmental damage costs, caused by 3 types of fired power plants in 30 provinces and 6 economic sectors during the years 2000 to 2003, were evaluated and analyzed. It can be seen that the calculated total national environmental damage costs of electricity have rapidly increased from 94930.87×106 USD in 2000 to about 141041.39×106 USD in 2003, with an average annual growth rate of 14.11%. Environmental damage costs of SO2, NOx, PM10, and CO2 are 69475.69×106, 30079.29×106, 28931.84×106, and 12554.57×106 USD and account for 49.26%, 21.33%, 20.51%, and 8.90% of total environmental costs in fossil electricity generation, respectively. With regard to regional distribution, external costs caused by fossil electricity generation are mainly concentrated in the more populated and industrialized areas of China, i.e., the Eastern Central and Southeastern areas.

Tenure of Urban Land： Structure, Form and Transformation in Ribeirao Preto, Brazil

The purpose of this study is to explore the urban morphological aspects of cities governed by the juridical regime of emphyteusis, a recurrent situation in the northeastern part of the state of Silo Paulo, Brazil, with special attention to the city of Ribeirao Preto. The concession of lands to the Catholic Church was a recurring practice in Brazil during the colonial and imperial periods, when the cities were being established. As these lands were intended for the formation of patrimonial goods to show the devotion of the residents to a Catholic saint, the lands were not allowed to be commercialized. The tenure reveals a relation in which there is an owner--the landlord--who has direct control of the urban land. This owner allows another--the leaseholder--the useful domain of the land, thus giving the latter the right to use the land, the obligation to pay an annual tax and the responsibility to give the owner a percentage of the sales generated from the land. In 1845, farmers donated a tract of land to be used to glorify Silo Sebastiao. This land is now the city of Ribeirao Preto, and it is this conjuncture that defined the structure and the transformation of the original urban form of the current city.