Experimental Study on, Small Span to Depth Ratio Coupling Beams withNew Reinforcement mewt Scheme and Design Method

Coupling beams combining two coupled walls are the primarily energy dissipating elements in the coupled walls and play a key role in improving ductility. It is proved by the test outcome at home and abroad that the shear failure happening early cannot be     

Water model study on flow optimization of five streams L-type tundish

In this paper, the water model method is used to optimize the flow behavior of asymmetrical five streams L-type tundish in a steelmaking plant. The results show that the optimization plan is set up with turbulence suppressor T+ vice guide wall D2+ main guide wall with three holes (D1a) which consists of top two holes with 25° inclination and one hole with 30° inclination below. With this plan, the time which the colorants reach to the outlets increases, the difference of response time in all outlets decreases, the peak concentration of the RTD reduces, the existence time of high concentration liquid steel extends, and the ratio of dead zone in each streams reduces.     

Flow Stress Behavior of 3104 Aluminum Alloy

According to different deformation conditions required in working process for manufacturing of 3104 aluminum alloy, the authors design the simulation experiments of hot rolling process at different deformation temperature and strain rates, analyze the relationships of deformation resistance, flow stress and strain rate, deformation temperature when alloy deformation. Based on experimental data analysis, it was concluded that the dominant factors affecting flow stress were the strain rate and deformation temperature, and the two parameters were also important for deforming process control.     

北疆棉纤维品质气候生态位适宜度研究

 以北疆高产棉花纤维品质形成为研究对象,引入生态位适宜度理论对与棉纤维品质形成发育相关的7个生态因子进行生态位适宜度测算,对比实际收获棉纤维品质的灰色关联度分析,结果表明,北疆高产田棉纤维生态位适宜度值第3~6果枝较高,第1～2、第7～8、第9～10果枝相继下降。影响棉纤维发育的生态因子的生态位适宜度值（F_i）与棉花纤维品质之间存在极显著的线性相关关系,不同果枝节位棉纤维品质的生态位适宜度值对棉花纤维品质具有较好的预测性,生态位适宜度分析法可以作为指导棉花生长调控、建立高产高效棉花群体的重要依据。     

甘蓝型油菜发芽种子耐湿性的主基因+多基因遗传分析

油菜湿害是我国特有的自然灾害,对油菜种子发芽、出苗和幼苗生长造成严重影响,导致单产显著下降。为研究油菜种子发芽耐湿性的遗传规律,本文利用耐湿性遗传差异较大的2个甘蓝型油菜纯系中双9号和GH01的杂交后代衍生的世代家系群体构建油菜耐湿性遗传体系,并以主基因+多基因家系世代联合分析方法对油菜耐湿性的遗传规律进行分析。结果表明,中双9号×GH01组合的耐湿性的遗传受2对完全显性主基因+加性-显性多基因控制,表现为耐湿对不耐湿完全显性。该组合的第1对主基因加性效应与显性效应相等,为0.0696;第2对主基因的加性效应与显性效应相等,为0.0530。多基因加性效应为0.3275,显性效应为负值([h]= –0.2137)。主基因存在显性效应,该组合的耐湿性存在杂种优势,多基因显性效应为负,多基因显性效应使F₁代耐湿性降低。F₂家系的主基因遗传力为73.57%,表现出较高的遗传力,建议育种工作者对耐湿性在早期选择效率较高。     

Determination of Moisture Rate of Porous Saline Materials

The high humidity makes the indoor air quality sultry. The porous saline materials can function as efficient humidity conditioner. On the basis of analyzing mass exchange process between porous saline materials and air, the computational method of the moisture exchange rate on the porous saline materials surface is established. A number of methods for enhancing the humidity conditioning of porous saline materials are suggested.     

Behavior and Design of High-strength Bolt in Tensile Connection

The tensile strength of high strength bolt is affected by many factors, including prying force. The prying force can result in the increment of bolt force, for which the connection failed ahead of time. Several methods are presented for calculating the prying force. In the China's "Code for Design of Steel Structure" (GB50017), there is no formula for calculation of prying force and a factor of 0.8 is considered in formula for tensile strength of bolt for taking the prying force into account. It is proposed that the design value of tensile resistance for high strength bolt should be increased.     

An Empirical Analysis on the Correlation between China''s Stock Market and Economic Growth

The correlation between China stock market and economic growth is always regarded by economic and financial studies. For the time limit of the developing of stock market and the difficulty of data's collection, it is still in studying that the correlation between stock market and economic growth, especially the causation versus regression. By the method of Demirguc - Kunt and Levine,this paper empirically tests the correlation between China's stock market and economic growth on the seasons serial data from 1995 to 2000. The conclusion is that the relationship economic growth between stock market is unilateral.     

Exploring Harmonious Protection of Land Resources in City Construction

Urbanization in China is at an essential point in its transformation from the initial stage to accelerating stage. With quick expansion of city scale and large occupation of land for urban construction, the contradiction between land resource shortage and people's living needs becomes more and more prominent. It has great affection on the grand plan of China's sustainable development of economy and society. How to adjust the relations between the development of urban construction and protect the land resource, promote the rational use of urban land, perfect and complete the protection system of land resource for improving the efficiency of urban land use. In order to conserve land resource and find a sustainable way for development of people's living and environment construction, the above mentioned problems are the most important issue for urban construction and important subject of this paper.     

Analysis on Effects of Constructions Building nearby the River Bank or across the River on Navigation Conditions

In this paper, the effects of construction nearby the river or across the river are analyzed on navigation conditions, such as navigation scales, navigation flow conditions, navigation way, navigation method and navigation aids. Some safety measures during its construction are presented.