DEVELOPMENT AND TEST ON ROLLING CONE ENVELOPING HOURGLASS WORM PAIR

The rolling cone enveloping hourglass worm pair has been successfully developed, in which there is almost only rolling friction between the meshing tooth surfaces, and both the worm and wormwheel have hard surfaces. Such a new type of hourglass worm pair is particularly-favorable for power transmission. This paper presents the design. manufacting and testing of this worm pair.     

A Reactive Power OptimlZation Method by Linear Program ming with Secure Correction

This paper presents a reactive power optimization method which combines thelinear programming model with secure correction. In correction. this mOdel presents a new idea inwhich the feasible control region of con trol variables is resolved by over constrained state varlables. This method is quick and reliable and overcomes oscillation of a general linear programming model.     

Study on New Technology of Compensation Network for Improving the Stability of Optical Fiber Sensor

THis Paper derscribes a novel all-fiber compensation network with three access-couplers for improving the stability of amplitude modulated fiber optical sensors. and its optimumstructure which is indepent on environment effects. We also describe the sealing method of the com-pensation network and the experiment of its coupler parameter variation caused by tempertare andvibration. The expreiment results showed that the compe nsation network can effectivelv resist themeasurement error affected by the in tensity variation of the optieal souce and other transmission loss.     

The Feasible Control for the Day-operation of the Three-Gorge Cascade Hydropower Station

The feasible control problem is presented for the day-operation of the Three-Gorge Caseade Hydropower Station. The significance of the problem is explained. Basic propetties ofthe problem and the approaches to study it are discussed. Two methfods are given for solving theproblem. which are calculus of variation and linear programming. In the former. the Euler equationwith time-lag and the generalised two-point boundary conditions are obtained and the correspondingpractical implication is interpreted. In the latter. the rationality for the discrete model is exptainedand the computalional details are given for the implement software. some questions which should bepaid much attentfon and the corresponding propeels are prasented based on the numerical results andtheoretical analysis     

阴、阳生木芙蓉气体交换参数对光温的响应

本文以木芙蓉为实验材料,研究阴、阳生木芙蓉气体交换参数对光、温的响应。测定了不同光温条件下,阴、阳生木芙蓉光合速率（Pn）、蒸腾速率（E）、胞间CO2浓度（Ci）、气孔导度（Gs）。结果表明,随着光强和温度的升高,阴、阳生木芙蓉的净光合速率、蒸腾速率逐渐升高,而胞间CO2浓度随光强和温度的的递增而递减;气孔导度随温度的的递增而递减,随光强的递增而递增。阳生木芙蓉的光合生理表现优于阴生木芙蓉。本研究结果发现木芙蓉更适于在阳生环境下栽培,为木芙蓉的园林绿化提供技术参考。     

AN APPRONTMATE CALCULATING METHOD FOR WALL PLATES OF MAN'' S DRY GAS HOLDERS

The basic equations of wall plates of MAN' S dry gas holders are derived in this paper. According to the law of cylindrical bending given by the finite element results .we derive some approximate formula calculating the deflection and stresses of the wall plates from the basic equations. Compared with the known approximate calculating method.the method car. obviously increase the percision.     

EXPERIMENTAL STUDY ON STATIC ANCHORAGE BEHAVIOR OF BEAM BARS WITN 90-DEGREE HOOK IN EXTERIOR JOINTS OF R/C FRAMES

In order to investigate the influence of concrete strength,horlzontal and verticalportions of anchorage length and cover thickness etc,upon the mechanical performance of 90-degreehooks of beam upper bars in exterior joints,static experiments of 40 beam- column subassemblagesare carried out. This study emphasizes the damage characteristics of the anchorage zone,measures thestrains of the bars along the anchorage length and analyzes the special anchorage mechanism of suchhooks of beam bars.     

Mixed Finite Element Formulation of the Linear Biphasic Theory for Soft Tissues

The behavior of soft tissues of human musculoskeletal system can be describedwith the biphasic model based on a continuum theory of mktures. This paper. using Galerkin weight-ed residual method.obtains a mixed finite element formulation for the linear biphasic model of smalldeformation. and. in turn. gives out the iterative scheme solving the system equations. The results ofnumerical analysis for the constrained compression problem are consistent with those obtained bytheory. which illustrates the correctnas and feasibility of the derived mixed finite element formula-tion. concludingly. this formulation provides an effective means of numerical analysis for the motfonmechanism of human articulating joints.     

A PROBABILISTIC PRODUCTION COSTING FOR MULTISTATES AND MULTIBLOCKS OF UNITS

A probabilistic production costing method for multistates and multiblocks of units is presented in this paper. The mixtures of normal distributions are used to represent the power of the system and the load. The energy, reliability and production costs are calculated directly from the analytical formulae. Numeral examples demonstrate that the algorithm presented in the paper is accurate and efficient.     

光敏核不育水稻的光温反应研究

在人工控制条件下研究了在15小时长光照下减数分裂期的不同温度（23.3-30.3℃）对籼稻光敏不育系W6154S和5460S育性转换的影响。结果表明，温度对育性的影响因温度的高低及处理持续时间长短而异，不同的材料对温度的反应不同。5460S从不育的临界温度在26.4℃左右，而W6154S在处理温度范围内均出现自交结实现象，表明供试的W61     

光敏核不育水稻的光温反应研究 Ⅲ.减数分裂期温度对两个籼稻光敏不育系育性转换的影响

在人工控制条件下研究了在15小时长光照下减数分裂期的不同温度(23.3～30.3℃)对籼稻光敏不育系W6154S和5460S育性转换的影响。结果表明,温度对育性的影响因温度的高低及处理持续时间长短而异,不同的材料对温度的反应不同。5460S从不育转为可育的临界温度在26.4℃左右,而W6154S在处理温度范围内均出现自交结实现象,表明供试的W6154S株系育性转换的临界温度可能超过30.3℃。提出了深入研究影响籼稻光敏不育系育性转换的临界温度的建议。     

Optimization of Magnet Damper Arrangement for Rotor Vibration Control of Large Turbine Generator Set

considering the Combination of several typical rotor unbalance conditions andpossible arrangments of magnet damper. rotor unbalance vibration of a large BBC turbine-genera-tor set has been analyzed by finite element method. Lincar simplification of dynamical characteris-tics of journal bearing and magnet damper was taken into account in the analysis.Numerical resultsshow that the optimum vibration control effect could be achieved when the damper located at middlepressure stage.     

利用单向有性多倍化改良马铃薯的蛋白质含量

马铃薯(Solanum tuberosum L.)蛋白质必需氨基酸平衡,通过育种手段提高其蛋白质含量将有助于改善人们的健康水平.本试验试图采用4x-2x组合方式进行有性多倍化,向普通马铃薯转移存在于二倍体栽培种Solanum Phureja和S.phureja-S.stenotomum(PHU-STN)杂种中的高蛋白基因.4x-2x四倍体杂种无性一代种植在哈尔滨和加格达奇,以早熟鲜食马铃薯品种克新4号及中晚熟高淀粉马铃薯品种克新12号为对照,评价其蛋白质含量.在14个组合中,04H19、04H21、04H23和04H17蛋白质含量(干基)均高于克新4号和克新12号,但它们只和克新12差异显著;当以鲜基表示蛋白质含量时组合间差异不显著.无论是以鲜基还是以干基为基础表示蛋白质含量均能从4x-2x四倍体后代中鉴定出高蛋白质的无性系.这些材料为进一步选择或当作亲本改良马铃薯蛋白质含量提供了物质基础.     

甘蓝型油菜SUMO蛋白家族成员鉴定及Bna.SUMO1.C08基因的功能研究

蛋白翻译后修饰对蛋白的功能非常重要。SUMO化修饰就是一种非常重要的蛋白翻译后修饰,它对植物生长发育的关键过程有很大的影响。甘蓝型油菜作为重要的油料和经济作物在SUMO化修饰方面却鲜有报道。为弥补这一空白,本研究对甘蓝型油菜中的SUMO化修饰进行了探究。首先通过生物信息学方法在甘蓝型油菜中鉴定到31个SUMO蛋白成员,分为3类:“典型”群组、“非典型”群组和SUMO-V。然后对甘蓝型油菜中AtSUMO1基因的同源基因Bna.SUMO1.C08进行表达模式分析,发现该基因在根、叶和角果中表达比较高。亚细胞定位结果发现,Bna.SUMO1.C08蛋白定位于细胞核和内质网中。最后在甘蓝型油菜中过表达Bna.SUMO1.C08基因发现其能够增强植株对PEG胁迫的抵抗能力。本研究为后续甘蓝型油菜中SUMO化修饰的研究奠定了一定的基础。     

粘果山羊草细胞质对小麦种子发芽率和出苗率的影响

本试验选用粘果山羊草（Ae.Kotschyi）细胞质不育系（简称K型）及相应的保持系、恢复系和杂交种研究了K型胞质材料和普通小麦胞质材料在种子发芽率、出苗率的差异。结果表明：K型胞质材料和普通小麦胞质材料的种子发芽率没有显著差异,浅播（3cm）条件下,K型胞质材料和普通小麦胞质材料种子出苗率没有显著差异,而深播（6cm）条件下,不同核基因材料表现出不一致现象,K型不育系豫麦3号及其杂种表现出偏高的出苗率,但不显著;K型不育系S43及其杂种表现出偏低的出苗率,且达到了极显著水平。     

白菜低温要求型晚抽薹性的相关序列克隆与分析

为了阐明低温要求型晚抽薹的分子机制,本研究利用易抽薹大白菜BY和晚抽薹芜菁"M.M"杂交获得的81个DH系群体为试材,从中选择了6个极早抽薹和6个极晚抽薹的株系分别组成早抽薹池和晚抽薹池.以两池和双亲为样本,以无低温和3～5℃处理25 d后获得的mRNA为模板,反转录为cDNA,利用256对AFLP引物组合进行cDNA-AFLP分析,筛选与晚抽薹性相关的特异片段.对其中3条差异表达、且丰度较高的cDNA片段进行了克隆测序.序列测定和Blast分析表明,p65m47 cDNA片段与C2结构域蛋白基因有80%的同源性,期望值为7e-17,C2结构域蛋白在细胞的信号转导中起着很重要的作用;p66m55 cDNA I片段与拟南芥AT1G32530 cDNA有85%的同源性,期望值为5e-36,它编码蛋白结合位点/泛素连接酶/锌指结合蛋白;p66m55 cDNA Ⅱ片段与拟南芥AT1G65590 cDNA有87%的同源性,期望值为4e-37,它编码B-N-乙酰已糖胺水解酶.     

A Kind of Synthetical Control Algorithms with Extensive Adaptability

A kind of synthetical control algorithms is presented in this paper.The controlstratege achieved by com bination cloed-lcop pole assignment and modified Smith predictor as wellas self-tuning control is useful to reailze extensive adapability and satisfactory prformence-robust-ness. Digital simulation experiment demonstrated the availability.     

Analysis and Design of Optimal Bus Fault Tolerance of Multibus System

Some results are presen ted which related fault-tolerance degrees of a multibussystem with the con nectivity of the bipartite graph induced by the system. Using the best con nectivi-ty bipartitegraph. we also present two classes of multibus systems which have the best degree of busfault tolerance and the best degree of bus-processor fault toferance as well as better degree of proces-sor fault tolerance.     

I.K. SPECTROSCOPY ANALYSIS OF THE GROUPS IN COAL MACROMOLECULE

A set of coal samples are characterized by FT-i.r. spectroscopy, and the assignment of the frequencies observed in coal spectra is analysed and discussed in delail in this paper. At the same time, the law of the variation of the groups in the macromolecule of coal with the increase in the rank of coal is researched.