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The effects of 4 kinds of processing aids on physical, mechanical and processing properties of PVC/wood flour composites were studied. The impact fractured surface of the composites was studied by means of SEM.

研究了4 种新型加工助剂对聚氯乙烯木塑复合材料的加工特性和物理力学性能的影响,并利用扫描电子显微镜研究复合材料的冲击断面。

The paper will show that, if appropriate time information are added into the signals over the Loran-C data channel (studied in the first part of the paper) or in which the current multi-chains signals can be skillfully dealt with(studied in the second part of the paper), the independence of Loran-C for precision timing can be perfected, as well as the precision of timing signals and the automatization level of UTC synchronization can be improved, thereby the Loran-C can be acceptant and employed widely.

本文通过研究认为,在罗兰C信道上增加合适的时间信息或利用多链罗兰C信息,能够完善罗兰C高精度授时的自主性,提高定时信号的精确度和用户定时的自动化水平,从而提升该系统的可利用度和可接受程度。作者所做工作及主要成果如下

The thermal decomposition kinetics of the N , N′-bis(5,5-dimethyl-2-phospha-2-thio-1,3-di- oxan-2-yl)ethylenediamine in air were studied by TG-DTG techniques. The kinetic parameters of the decomposition process for the title compound in the two main thermal decomposition steps were calculated through the Friedman and Flynn-Wall-Ozawa methods and the thermal decomposition mechanism of DPTDEDA was also studied with the Coats-Redfern and Achar methods.

以TG-DTG为手段,研究了 N , N ′-二(5,5-二甲基-2-磷杂-2-硫代-1,3-二噁烷-2-基)乙二胺在空气中的热分解动力学,利用Friedman法、Flynn-Wall-Ozawa法对DPTDEDA进行了动力学分析,求出了该物质两个主要的热分解阶段的热分解动力学参数,同时利用Coats-Redfern法、Achar法研究了该物质的热分解机理。

And an on-line adaptative training algorithm of the weights of neuron is given, which enhances fusion precision of the model, fault tolerance and adaptive ability for subsystems 4 In order to diagnose the soft fault of integrated system, a new fault detection method is proposed based on federated filter, which can detect fault of system in short interval and greatly enhance the method sensitivity to fault A fault diagnosis method of Dynamically Tuned Gyro baesd on parameter estimation of kinetics model of rotor, and signal pretreatment, parameter estimation and strategy of fault identification are studied in detail The method can locate fault of DTG correctly and effectively, which provides a new approach and idea for gyro fault diagonsis 5 In order to diagnose the hard fault of integrated system, fault tree analysis is studied on fault disgnosis of integrated system circuits, and the hardware and software of disgnosis system are developed, with faults located to main module and circuit For futhur diagnosis, an optimal measurement technology in detection of circuits is discussed by improving an algorithm based on information theory, and a pratical method based on half-split method is proposed.

针对组合系统的软故障诊断问题,提出了基于联合滤波模型的一种新的故障检测算法,给出了算法的理论推导过程,该算法能在较短的时间内检测出系统故障,提高了算法对故障的敏感度;研究了基于动调陀螺转子动力学模型参数辨识的故障诊断方法,就其中的信号预处理、参数辨识及故障决策方法等关键技术进行了详细的研究,该方法可以正确、有效地检测与定位动调陀螺故障,为陀螺故障诊断提供了新的途径和思路。 5。针对组合系统的硬故障诊断问题,研究了基于系统浅知识推理的故障树法在组合系统电路子系统故障诊断中的应用,开发了相关诊断系统的软硬件,故障可定位到系统的主要功能模块和电路板级。为了进一步的故障定位,研究了电路板故障的最优检测问题,完善了基于信息理论的优化算法,并提出了基于&对分法&的一种实用的优化算法,故障可定位到电路板的主要功能元件级。在组建的SINS/GPS组合系统实验平台上,针对上述研究内容,进行了大量的实验研究。

The Aesculus chinensis,Euptelea pleiospermum,Cercidiphyllum japonicum,Taxus chinensis,Picea brachytyla and Emmenopterys henryi Oliv compose and stand structure of were studied,and the comparability matrix among those main woods distribution were studied,and the protection propagation countermeasures were put forward.which are important for researching and protecting these rare woods in Fun...

经调查,基本摸清了国家保护植物七叶树林、领春木树林、连香树林、红豆杉树林、云杉树林、香果树林6种珍稀树种林分的组成与结构,研究了主要林分之间的相似性矩阵,同时提出了保护繁育对策,对开展研究和保护珍稀树种具有重要意义。

The city green turf grasses are under seriously stress for the shading of tall buildings, trees and shrubs, and lead to the recession of turf grass, so the author studied for this problem; Taking three cold-season sods as test material, including Festuca rubra Pernille、Poa pratensis Kentucky and Agrostis Regent. Effects of different concentrations of uniconazole (S3307) on shade-tolerance of three turf grasses under shading situation were studied by testing long-term growth and physiological characteristics of them.; After treated with S3307, the contents of chlorophyll and soluble sugar increased, plant height decreased, leaves width and thickness increased. All of these indicated that S3307 can evidently improve shade-tolerance of three turf grasses with different shade-tolerance, the optimal concentration of uniconazole is 100~200 mg/L; The results are very useful and meaningful for improving quality of turfgrasses under shading situation.

高大建筑物、乔木及灌木遮荫会使用于城市绿化的草坪草受到严重胁迫,造成草坪草衰退,针对这一难题进行了研究;以耐荫性不同的冷季型草坪草匍匐紫羊茅派尼、草地早熟禾肯塔基、匍匐翦股颖摄政王为试验材料,研究了不同浓度的外源激素稀效唑(Uniconazole, S3307)处理对3种遮荫草坪草生理及生长变化的长期调控作用;经稀效唑处理,3种草坪草叶片叶绿素含量和可溶性糖含量增高,植株株高变低,叶片变宽、变厚,不同耐荫性草坪草的耐荫能力均得到显著提高,最适的处理浓度范围100~200mg/L;这在生产实际中有重要应用价值,特别对提高受遮荫胁迫的草坪质量具有重要意义。

The relationship of six species from Alaudidae (Alauda arvensis Melanocorypha mongolica Calandrella cinerea Calandrella cheleensis Eremophila alpestris Galerida cristata) distributed in Inner Mongolia were studied from three aspects: Mostly in feather keratins, chromosomal karyotype and morphology adding.The contour feather vance, down feather and shaft of six Larks were studied by means of SDS-PAGE of feather keratins.

本文在羽毛角蛋白、染色体核型及形态学三个层次上,以羽毛角蛋白凝胶电泳分析为主,以染色体核型分析和形态学分析为参考,对分布于内蒙古地区的百灵科Alaudidae的6种百灵鸟的亲缘关系进行研究,包括云雀Alauda arvensis、蒙古百灵Melanocorypha mongolica、短趾百灵Calandrella cinerea、亚洲短趾百灵Calandrella cheleensis、角百灵Eremophila alpestris、凤头百灵Galerida cristata。

The synthetic progress of polysuccinimide using maleic acid as original material was studied by two steps of aminization and polymerization. Changes of reactant and product composition in aminization reaction step was studied by using bromine value analysis method. It was found that amine salt and amide were main products in this step.

对以马来酐为原料合成聚琥珀酰亚胺的两个反应过程进行了研究,通过溴价测定法研究了胺化反应阶段反应物及产物各组分的变化情况,确定胺化反应阶段的产物组分主要是胺盐和酰胺。

The optimal carrier gas velocity of prepared SE-30 series capillary chromatographic columns was studied and used to separate isomeric compounds. The efficiency of SE-30 capillary chromatographic columns has been studied with different diameters, film thicknesses and oven temperatures, using n-do-decane, phenol, aminobenzene, and butyl acetate as test samples.

研究自制的SE-30系列毛细管气相色谱柱的载气最佳线速度,并应用于同分异构体的色谱分离分别用十二烷、苯酚、苯胺、醋酸丁酯作试祥在不同载气线速条件下对不同口径、不同膜厚、不同柱温的SE-30毛细管色谱柱的柱效进行考察,并在最佳线速度条件下分离异戊醇、硝基氯苯、硝基甲苯及二乙苯同分异构体体系。

The effects of doping concentration of iodine, doping time, doping temperature and exposure time on volume resistivity of anthracite were studied; and also the effects of solution concentration of cupric chloride, doping time, doping temperature, soking time of cupric chloride and exposure time on the volume resistivity were studied; Anthracitic resistivity has been decreased in dissimilar extent, and furthermore ,volume resistivity stability of the doping anthracite made by liquid phase doping method is more better than gas phase mothed; Resistivity and its stability were better than the doping method of iodine in fused salt doping method of cupric chloride.

研究了I_2掺杂浓度、掺杂时间、掺杂温度和暴空时间对无烟煤电阻率的影响;探讨了CuCl_2溶液的浓度、掺杂时间、掺杂温度和CuCl_2溶液浸泡放置时间以及暴空时间对无烟煤电阻率的影响:结果发现:I_2气相掺杂和液相掺杂均使无烟煤的电阻率有不同程度的降低,而液相掺杂法所得材料的电阻率稳定性更高;CuCl_2熔盐掺杂法所得材料的电阻率及其稳定性均优于I_2掺杂法。

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