mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Plant Traits and Soil Chemical Variables During a Secondary Vegetation Successi on in Abandoned Fields on the Loess Plateau

Species dynamics in terms of both plant biological traits, ecological strategies and species richness as well as soil chemical variables during a secondary succession in abandoned fields on the Loess Plateau along a temporal sere from 3 a to 149 a were studied. The results indicated that (1) Soil total C and N increased while soil pH， total K and Na decreased with years since abandonment. No noticeable trend was found in the case of soil P along the successional sere. On the other hand, total CaO of the surface layer (0-10 cm) decreased, but that of the two deeper layers (20-30 cm, 40-50 cm) increased with years since abandonment. Soil C, N, K and P decreased, while Na, CaO and soil pH increased with increasing soil depth. (2) Species richness peaked at both mid stage of the successional sere and the intermediate portion of soil chemical variables gradient. (3) An ideal dominant species in the early successional stage were annuals with stable seed pool, CR life strategy, S regeneration strategy, and strong competitive ability on relatively poor soil, while perennials capable of intensive lateral spread and colonal ability, requiring high nutrient supply, and having C life strategy would be the dominant species in the subsequent stages. Plant traits, such as perennial life history, C , CR , SC , SR , S and R life strategies, W , S , Bs VBs and V regeneration strategies, were over represented throughout the whole sere among the other species. (4) Some traits, such as C, SC life strategies, ability of clonality, perennial life history, well developed lateral spread ability, V and VBs regeneration strategies, seed animal dispersal mode, flowering time of autumn, fruit types of legumen and nut, were more or less correlated with increased soil total C, N and K, while S , SR , R , CR life strategies, annual , biannual life history, non clonal ability, S regeneration strategy, poor lateral spread ability, and fruit types of utricle, capsule were associated with increased soil total Na, CaO and pH. The results suggested that steppes should be the dominant native vegetation coinciding with the large scaled eco climatic conditions on the Loess Plateau.
The Effect of Active Oxygen on the Activity of ACC Synthase Induced by Exogenous IAA

During the couise of mungbean ( Phaseolus radiatus L.) germination, the rate of ethylene produc-tion and the activity of ACC synthase (1-aminocyclopropane-l-carboxylie acid synthase, EC4.4.1.4) began to increase in the 5th day of germination, and reached its peak in the 10th day and then decreased. The ethylene production and the activity of ACC synthase were obviously promoted by 10 jumol/L exogenous IAA (indole-3-acetic acid). The production of auperoxide radical (O2T ) and hydrogen peroxide (H2O2) were also promoted by exogenous IAA, suggesting that there was some relationship between active oxygen production and the activ-ity of ACC synthase induced by exogenous IAA. The production of ethylene and the activity of ACC synthase increased dramatically when the seedlings were treated with exogenous O% , whereas the exogenous H2O2 had no effects on the production of ethylene and the activity of ACC synthase. Exogenous SOD (superoxide dismu-tase, one scavenger of O2' ) could inhibit the production of ethylene and the activity of ACC synthase, but ex-ogenous CAT (catalase) could not. So it was possible that IAA would stimulate the activity of ACC synthase by inducing the production of Of in germinating mungbean seedlings, and this might be one of the regulating mechanism of ethylene synthesis in higher plants; the production of H2O2 induced by IAA was not the cause of the increase of the activity of ACC synthase and the production of ediylene.
`Antagonistical Mode of Pichia membranefaciens to Rhizopus stolonifer in Wounds of Peach Fruit

As an alternative to the use of synthetic fungicides, biological control of postharvest diseases in fruit is an area of great potential (Wilson and Wisniewski, 1989). To date, many antagonists have been isolated and assayed to have biocontrol efficacy against postharvest diseases of fruit (Robert, 1990; Drobys et al, 1993; Fan and Tian, 2000; Tian et al, 2001). Compared with the application of antagonists, our knowledge on antagonistical mechanism of most postharvest biocontrol agents is scant (Wilson and Winsniewski, 1994). However, a better under-standing of the mode of action of antagonists is an important prerequisite both for enhancing their biocontrol activity and establishing screening criteria in search for new antagonists (Castoria et al, 1997).
Determination the Vigor of Rice Seed with Different Degrees of Aging with Ultraweak Chemiluminescence During Early Imbibition

Ultraweak chemiluminescence (UCL) is the spontaneous light emission radiated from various biological systems derived from chemiexcitation of biological molecules during oxidative metabolic processes (Popp et al, 1988). Therefore, this weak light is a possible representation of physiological or pathological conditions of cells and tissues. Detection of UCL makes it possible to acquire immediate information on biological activities non-invasively (Popp et al, 1988). The most important aspect, of the chemiluminescence (CL) in biological systems is that it gives readily detectable, continuously monitorable, noninvasive signals of oxidative metabolism. In recent years, a lot of evidence has been accumulated that interactions between water and food significantly affect the processing, storage and the quality of cereal products (Slawinska and Slawinski, 1997; 1998). Nowadays, CL-based methods have been developed for monitoring the investigation of reactions of water with cereal products (Popp et al, 1988). The study of UCL of plant and its applications in agriculture has had very significant achievements. The UCL intensity changes with time, and the increasing rate of UCL reflects the germination ability of the seed. The emission pattern of chemiluminecence of the seed may suggest its metabolic status (Bajpai et al, 1991).
一种多用途、低功耗野外适用性电源的设计与实现

根据工作需要，设计制作了一套专门为在野外工作使用的电源，该电源实用方便，解决了野外工作时仪器设备的用电需要。本文论述了此电源的工作原迎、电路结构及测试过程。
A Unique Aegilops tauschii Genotype Needless to Immature Embryo Culture in Cross with Wheat

Common or bread wheat ( Triticum aestivum L. , AABBDD, 2n = 42) originated ca. 8 000 years ago from hybridization of tetraploid wheat ( Triticum turgidum L. , AABB, 2n = 28) and diploid Aegilops tauschii Coss. (DD, 2n= 14) . An essential prerequisite for this evolutionary step is that the natural hybrids between tetraploid wheat and diploid Aegilops tauschii can produce relatively many filled seeds which germinat-ed well. In this study, without special techniques, e.g. immature embryo culture, out of 22 Ae. tauschii ac-cessions, the genotype AS60 produced relatively many filled seeds which germinated well. The seed germina-tion percentages in the crosses of Ae. tauschii * tetraploid wheat, tetraploid wheat * Ae. tauschii and Ae. tauschii * common wheat were, respectively, 50.0%, 57.1% and 45.5%. It seems that Ae. tauschii ac-cession AS60 has a unique genotype which facilitate hybrid seed development and viability, and which meets witli the prerequisite for wheat evolutionary. Furthermore, the significance of this finding for common wheat improvement and evolution was discussed.
Overexpression of Proline Transporter Gene Isolated from Halophyte Confers Salt Tolerance in Arabidopsis

Proline is one of the most important and widespread osmolyte which functions in adaptation to adverse environmental stresses in many organisms. Also it is an important carbon and nitrogen resource in higher plants. Metabolism of proline has been elucidated in many plant species. However, transport of proline was poorly characterized although transport system plays an important role in proline distribution in different tissues. We isolated one full length cDNA encoding proline transporter from the typical halophyte: Atriplex hortensis L. through cDNA library screening and 5′-RACE. The deduced amino acid sequence had eleven transmembrane domains, showed 60%-69% similarities to other ProTs and the gene was designated AhProT1 . In the phylogenetic tree, higher plants’ ProTs, e.g. AhProT1 , showed more similar to ProP from microorganisms than ProT from mammalians. AhProT1 gene was transformed into Arabidopsis thaliana under 35S promoter. In MS medium containing ［U-14C］ proline, AhProT1+ plants were able to accumulate much more radiolabeled proline in the roots than control plants. In MS medium containing different concentrations of NaCl, AhProT1+ plants could endure 200 mmol/L NaCl and keep development and biomass increase with proline supply, whereas control plants died back at 150 mmol/L NaCl.
Molecular Cloning and Characterization of a Serine/Threonine Protein Kinase Gene from Triticum aestivum

To isolate genes related to resistance to Erysiphe graminis DC. ex Merat f. sp. trilici Em. Marchal in wheat (Triticum aestivum L.), differential display analysis was conducted for mRNA extracted from the seedlings of the wheat- Haynaldia villosa 6VS/6AL translocation line 92R137 that contains the powdery mildew resistance gene Pm21, A full-length cDNA named TaPKI was isolated. BLAST analysis revealed that it was significantly homologous to Gfycine max (L.) Merr. protein kinase (GmPK6) cDNA. TaPK1 encodes a 416 amino acid long polypeptide, which belongs to serine/threonine protein kinase family, also has tyrosine kinase specificity. TaPKl is a novel protein kinase from wheat.
Expression of Recombinant Tryptophan Decarboxylase in Different Subcellular Compartments in Tobacco Plant

The gene encoded for tryptophan decarboxylase (TDC), which is the key enzyme in terpenoil in-dole alkaloids pathway, was targeted to different subcellular compartments and stably expressed in transgenic tobacco {Nicotiana tabacum L.) plants at the levels detected by Western blot and tryptamine accumulation analysis. It was shown that the TDC was located in subcellular compartments, the chloroplasts and cytosol. The recombinant TDC targeted to chloroplasts and cytosol in tobacco plants was effectively expressed as soluble protein by Western blot analysis and enzymatic assay. The level of Iryptamine accumulation in chloroplast was higher than that in cytosol and veiy low in vacuole and endoplasmic reticulum (ER) to be hardly detected by Western blot analysis. It was indicated that the highest amount of tryptamine was in chloroplasts, lower in en-doplasmic reticula and the lowest in vacuoles as compared to those in wild type plants. The TDC targeted to different subcellular compartments of tobacco plants and its expression level were studied by different nucleotide sequences coding signal peptides at 5'-end of tdc gene in order to know the effects of the TDC in compartmen-tation on its functionality.
Preparation of Total DNA from "Recalcitrant Plant Taxa"

Contamination problems on DNA isolation from "recalcitrant plant taxa" which is rich in polysac-charides have been commonly encountered in a wide range of research fields such as plant population biology, biodiversity, and molecular marker-assisted breeding. Here we present an improved protocol to extract DNA ef-ficiently from dry or fresh leaves of a " recalcitrant plant taxa", Betula alnoides Buch. Ham. ex D. Don in which three key steps are involved: 1) washing out most of polysaccharides and other secondary compounds with CTAB-free buffer from homogenate; 2) adoption of 3% CTAB rather than 2% CTAB in the exaction medium; and 3) using of high concentration of salt prior to DNA precipitation with isopropanol to remove resid-ual polysaccharides. The isolated DNA has been proved suitable for RAPD-PCR amplification and restriction digestion. This modified procedure is simple, inexpensive and reliable, and is also applicable to many other plant taxa with high polysaccharides.
AVO纵横波反演

作者在本文介绍了，利用地震资料AVO纵横波分离（加权叠加）技术求出的纵波剖面、横波剖面，再进行模拟退火反演而求出的纵波速度（Vp)、横波速度（Vs)、密度（d)、拉梅常数（λ）、剪切模量（μ）、流体压力（Pf)及泊松比（σ）等参数的一项实用AVO油气预测技术。
地震资料处理中的并行计算机技术（综述）

作者在本文中从地震资料并行处理的工业需求，地震资料自身的特点和现代地震数据处理对高性能计算机的要求出发，简述了为什么要用并行机进行大规模并行处理的原因。通过分析目前国内外有代表性的两种并行机（IBM SP2和Intel Paragon)的体系结构，给出了并行机硬件的发展现状。作者在文中还着重对前苏联以及我国近几年引进的国外地震处理系统的并行功能和应用情况进行了阐述。并结合课题研究，提出了地震资料并行处理的一个发展方向-基于微机群的地震资料交互、并行处理系统。最后，作者对发展并行计算机提出了几点建议。
地学核技术识别成矿流体地球化学界面的试验

作者在本文中应用地学核技术方法进行了成矿流体地球化学界面的识别试验，结果表明，多元素X射线荧光测量技术、地气中子活化分析技术、γ能谱测量技术均可有效地识别地球化学界面的标志。
Effects of Nitrate on the Growth of Lateral Root and Nitrogen Absorption in Rice

Lateral root is primary organ for plant to explore and utilize soil nutrient efficiently. The develop-ment of lateral roots (LR) is controlled by both genetic factors and nutrient status in environment. To investi-gate the effects of nitrate (NO_3~-) on rice lateral root growth and nitrogen (N) uptake efficiency under upland condition, three treatments, including root-split culture and whole plant culture in N sufficient and deficient conditions, were used in a vermiculite culture experiment. Root-split treatment showed that the growth of later-al roots was stimulated by localized nitrate supply. However, in whole plant culture, elongation of lateral roots was induced by NO_3~- deficiency. The effects of NO_3~- on rice lateral root growth were genotype-dependent. Similar N concentration, soluble sugar concentration and N content in shoot were observed in both root-split treatment and whole plant culture under NOf sufficient condition, suggesting that the nitrogen requirement for rice normal growth could be satisfied with only half of roots supplied with NO_3~- . In the root-split treatment, N uptake was positively correlated with the average of lateral root length (ALRL) in NO_3~--supplied side, suggest-ing that the ALRL is important for rice root N uptake in the environment where the nitrogen nutrient is limiting factor. No significant correlation was observed between N uptake and ALRL in whole plant culture under N sufficient condition, which implies that the length of lateral roots may not be the main factor to determine the rice root N uptake in nutrient-rich zone. Morphological and metabolic evidence in this study provided some prospects for genetic improvement of root system characters to improve the efficiency of nutrient absorption in rice.
Ultrastructure of the Multicellular Nodules in Hypericum perforatum Leaves

With the development of the multicellular nodules in the leaves of Hypericum perforatum L., plastids increased both in number and volume, and some plastids degenerated and were surrounded by dark tubular elements and vesicles. Some vesicles fused with vacuoles and secreted substances into vacuoles. There are many multivesicles, multimembrane structures and osmiophilic droplets in vacuoles of nodule cells. Meanwhile, dictyosome secreted vesicles into the vacuoles. However, there is a large central vacuole complete-ly filled with secretoiy materials (hypericin) in matured multicellular nodules. This suggests that the osmio-philic droplets may be a precursor of hypericin originated from the degenerated plastids. There were abundant endoplasmic reticulums and dictyosomes between the plastids and osmiophilic droplets, suggesting that they may be involved in the synthesis and/or transport of the precursor of hypericin.
Progress in the Breeding of Soybean for High Photosynthetic Efficiency

Studies for many years have indicated that the seed yield of ( Glycine max L. Merr.) soybean can be increased by increasing photosynthetic efficiency. The yield of cultivars with high photosynthetic efficiency (HPE) increased by 30% -40% in comparison with the cultivars with normal photosynthetic efficiency, indicating that the breeding of soybean by increasing HPE may have a blight prospect. HPE breeding can be used as the temporal monitoring in tlie breeding process to avoid the divergency of the predetermined goal, although HPE breeding does not shorten the breeding time. It was observed that limited C4 pathway exists in soybean leaf and pod, suggesting that by increasing the genetic expression of some C4 enzymes in C3 crops through tra-ditional or genetic engineering techniques, new breakthroughs in increasing the photosynthetic efficiency of C3 plant may be practicable in the future.
Seasonal Changes in the Ultrastructure of the Vascular Cambium in Shoots of Populus tomentosa

Wood is the product of cambial activity in trees, and the seasonal activity style of cambium direct-ly influences wood biomass production, structures and properties. The seasonal changes in the ultrastracture of the vascular cambium activity of Populus tomentosa Carr. planted in Beijing area were examined in shoot tis-sues collected during 15 months by means of transmission electron microscopy. Before xylem mother cells reac-tivated completely, the dividing fusiform cells in cambium and new phloem cells had appeared at the same time. The initiation of cambial activity may be related to the bud sprouting and the young leaf growth in shoots. More details about the ultrastructural changes of cambial cells at the onset of cambial activity have been gained. When the large vacuole in active cambial cells divided into smaller ones during the dormant phase, proteinaceous material that disappeared in active cambial cells refilled many of these small vacuoles. In addi-tion, lipid droplets and starch granules had the same cycles as proteinaceous material. The plasmalemma in-vaginations of fusiform cells were observed not only in active phase but also in dormancy, The endomembrane system consisting of nuclear membrane, endoplasmic reticulum (ER), dictyosomes and their secretory vesi-cles, changed in form and distribution at different phases during a cycle and performed important roles at the onset of active cambium and during the wall formation process of secondary xylem cells. The tangential walls remained relatively thin throughout the year but the radial walls thickened markedly when the cambium was dormant. During the transition from dormancy to activity, a partial autolysis occurred in the radial walls of the cambial cells, especially at the cell wall junctions. A notable feature of the cells at the onset of cambial activity was the thinning of the radial walls.
Implementation and Study of a Novel Doubly Salient Structure Starter/Generator System

A new type of double salient starter /generator is presented. which can be used in aircraft Low Voltage Direct Current (LVDC), Variable Speed Constant Frequency (VSCF) and High Volt-age Direct Current (HVDC) systems. The operational theory of the motor and generator is analyzed, and corresponding control strategies are given. An 18kW prototype has been implemented to verify the system performance. It is shown that the DSM S/G system possesses simple structure, high effi-ciency and flexible control. It is appropriate to be used for aircraft application.
分形理论在焊接图象处理中的应用

针对焊接过程中的图象处理问题，如检测焊缝边缘位置和确定焊接熔池的边缘大小和形状等问题，由于传统图象处理方法易受噪声和其他干扰信息的影响，因此很难准确及时地处理图象，为了克服此弱点，在比较了焊接过程中图象处理的微观算法和宏观算法的基础上，提出了运用分形理论的综合图象处理方法，该方法是根据焊接过程图象的特点，首先利用图象边缘的分形特征来进行区域分割，以便检测出图象边缘所在的模糊区域，然后用边缘检测方法的Laplace算子和最小二乘法拟合曲线来识别出图象的边缘，同时用该方法进行了实时焊接图象处理实验，实验结果证明，该方法不仅能准确识别出焊接焊缝或熔池图象的边缘，而且节省了图象处理的时间，为焊接过程的实时控制提供了可靠的信息。
固溶体技术用于AlN—SiC微波衰减材料改性

结合AlN-SiC二元系相图的理论分析，提出了利用固溶体技术实现AlN-SiC微波衰减材料性能优化的研究思路；采用热压烧结工艺，通过合理的烧结温度及保温时间的控制，制备了性能优异的AlN-SiC微波衰减材料。通过XRD、SEM、网络分析仪等测试手段，研究了材料的显微结构（晶粒尺寸和晶粒形状等）对材料微波衰减性能的影响。结果表明，AlN-SiC局部固溶体具有广频衰减特性，而AlN-SiC均质固溶体具有选频衰减特性；并初步探讨了AlN-SiC固溶体陶瓷的微波衰减机理。
参与式贫困评估在中国的应用

通过在广西、云南、宁夏和贵州开展的为期3期共5个县的参与式贫困评估，就参与式贫困评估的概念，为什么要使用参与式贫困评估，应用过程，以及应用中碰到的问题和困难进行了阐述,建议把参与式贫困评估纳入扶贫项目中，以识别真正的贫困人口，了解他们的需要，提高农民的参与程度，达到更有效的扶贫效果。
opology and Vortex Structures of Turbine Cascade with Different Tip Clearances

This paper uses the topology theory to analyze the surface flow spectrums of straight, positively curved and negatively curved cascades with relative tip clearances of 0. 023 and 0.036, finds apparent differences of topology and vortex structures in the blade tip and the suction side wall corner of single type of cascade with this two clearances, and studies the mechanism of the difference formation as well as their effects on the energy loss.
玫烟色拟青霉的培养及固体培养基筛选

本文记述了玫烟色拟青霉（Paecilomyces fumosoroseus)在6种不同固体培养基上进行三级扩大培养的方法及培养性状，其中以麦麸和米糠混合的固体培养基产孢量可达283亿／g，该菌在这种培养基上产孢量大，容易生长，且该培养基经济实用，容易得到，判断该培养基为优良培养基。
水稻新型三系雄性不育系黔丰11A的选育及应用前景

通过对新选三系雄性不育系黔丰A的各个性状分析，结果显示：该不育系的花粉败育率为99．9％，左右，株高60cm左右，分蘖力强，千粒重28克左右；柱头外露率为85．1％，高于各对照不育系，其组配的杂交F1的结实率（％）和单株产量都分别比对照种汕优63高。
光温敏两用核不育系杂株类型分析及提纯技术探讨

通过对温敏型两用核不育系360S杂株类型分析，结果表明：生物学混杂和机械混杂是两和核不育系亲本种子纯度降低的主要原因，基于此，采用提纯技术，排除生物学混杂与机械混杂，可以提高不育系种子纯度和F1代种子纯度，并提出了在贵阳和三亚自然光温条件下光温敏核不育系提纯繁殖技术程序。
海洛因依赖者人格特征研究

目的 探讨海洛因依赖者有无典型人格特征，探讨利用MMPI剖析图特征将海洛因依赖者分型是否有临床意义及病因学意义。方法 临床研究主要采用简式MMPI（399项）问卷对169例海洛因依赖者进行测查。结果 海洛因依赖者MMPI多项临床量表分明显升高，根据MMPI剖析图两点编码类型将海洛因依赖者分成A、B两型；A型为28/82、48/84、68/86，B型为其他两点编码类型，A型海洛因依赖者最长操守时间明显少于B型，其他临床变量均无显著性差异。结论 多种形式的心理异常是海洛因依赖者普遍的人格特征。根据MMPI剖析图两点编码类型将海洛因依赖者分两型有一定的临床意义。
复合桩基优化设计方法与工程验证

提出用基于Geddes应力解的分层总和法计算桩群分担荷载所引起的地基沉降，用基于Boussinesq解的分层总和法计算承台下土分担的荷载所引起的地基沉降，将两者之和作为桩基沉降量，结合一个具体的工程将该方法计算的沉降量和其它方法计算的沉降量及实测值进行对比，通过研究沉降量与各种因素的关系，对复合桩基的优化设计进行了探讨。
放电间隙和显示电极宽度对彩色AC—PDP光电特性的影响

为了提高彩色AC-PDP的性能，以放电间隙和显示电极宽度对表面放电型AC-PDP光电特性的影响进行实验研究和理论分析。结果表明，表面放电型AC-PDP显示电极间的放电不符合巴邢定律，即着火电压Uf不是气体压强p和放电间隙g1乘积的函数，并且在Uf-pg1曲线上，随着g1增加，最小着火电压Ufmin上升，（pg1)min向增大的方向偏移，同时放电间隙增加还引起维持电压余度增大，亮度和光效提高；随着显示电极宽度增加，平均放电电流增大，亮度提高，而光效保持不变。根据这些实验结果，总结出放电间隙和显示电极宽度的设计方法。
静电加速器高频离子源引出电极的光学设计

高频离子源管道式引出电极的几何参数对束流引出具有重要影响。本文通过建立束流最佳引出数学模型，对引出电极的几何参数进行了离子光学计算，确定了适合引出H^+,N^+,Ar^+等多种束流的引出电极合适的几何参数，并综合气耗、束流强度等因素设计了用于5.5 MeV静电加速器高频离子源的引出电极。理论计算和实验表明了该设计方法的有效性。
4π探测器获取系统多路模拟求和电路的研究

介绍了一种高速多路模拟求和电路，它接收≥20mV的小幅度信号，在其SUMBUS（求和总线）产生每路50mV的输出信号，求和电路的输出信号可用于多重性鉴别和产生4π多重探测器数据获取系统的tigger信号。
某型直升机主减滑油冷却风扇性能测试及分析

叙述了某型直升机主减滑油冷却风扇性能测试试验情况，并对进口风扇和国产风扇的性能作了分析比较，为该型直升机国产化风扇性能作出了结论，同时为直升机用风扇性能试验总结了经验。
PLC控制加工中心刀库的选刀与CNC系统的通信研究

研究采用计算机记忆式的选刀方式，通过编程方法实现软件选刀功能，采用汇编语言编程实现在自动换刀过程中加工中心CNC系统与刀库控制PLC间的通信。
电火花加工脉冲电源研究现状与发展趋势

针对传统电火花加工脉冲电源使用的缺点和局限性，介绍了当前电火花加工脉冲电源的研究现状和新的发展趋势，并对几种新型脉冲电源的研究和应用进行了分析。
磁流变抛光液的研制

磁流变抛光是近十年来新兴的一种先进光学制造技术。首先简要介绍了磁流变抛光的抛光机理。然后对在磁流变抛光中起重要作用的磁流变抛光液的组成、流变性和稳定性进行了研究。在外加磁场强度高于318kA/m时，磁流变抛光液的剪切应力大于20kPa，该应力足以完成磁流变抛光。最后给出一个磁流变抛光的实例。证明了磁流变抛光液的实用性。实验中磁流变抛光的最大材料去除率约为0.2μm/s.
高速波形产生及频率调制技术研究

在利用可编程电路实现高速直接数字合成的基础上，提出了一种通过实时改变直接数字合成频率控制字，直接实现波形频率调制的方法。重点对高速相位累加器、FM、扫频、FSK等调制的实现方法进行了分析并基于FPJ进行，数据能够稳定建立，频率合成正确。
用于燃料电池电动汽车的双单端正激变换器

由于燃料电池的输出特性比较软，难以直接与电动汽车的电机驱动器相匹配，必须采用DC／DC变换器来改善其输出特性．采用正激变换器必须要有磁复位电路才能正常工作．单管正激变换器由于输出功率不大、效率不高，不能满足电动汽车对DC／DC变换器大功率输出的要求，而双单端正激变换器则能够从质量、效率、体积和可靠性等方面满足燃料电池电动汽车对DC／DC变换器的要求，是合适的DC／DC变换器主电路方案．据此分析比较了正激变换器的4种磁复位技术，在此基础上，详细分析了双单端正激变换器的工作原理和独特优点，并对双单端正激变换器在燃料电池电动汽车中应用的可行性及相应的控制方案进行了研究。
南沙海域主要沉积盆地局部构造特征及组合样式研究

局部构造是盆地油气聚集的场所，研究其形态和成因以及空间展布特点，有利于认识盆地的油气富集规律和油气藏特点对提高钻探成功率有重要的实用意义。总结了曾母盆地、北康盆地和南薇西盆地局部构造的基本规律，研究了局部构造的组合样式以及配套形成的油气圈闭类型，认为南沙海域具有形成有利局部构造的区域构造环境。主要沉积盆地中形成的局部构造与断层的控制因素密切相关；各沉积盐地局部构造的组合形式和圈闭类型，取决于构造发育部位以及所受区域构造运动的改造程度。
一种稳定的文本检索算法

目前信息检索方法的主流是统计方法。统计方法常常依赖于特定参数以适应不同的数据集合和检索任务，因此应用较为困难。本文试图寻找一种较为稳定的文本检索算法以减少检索方法中的不确定性。在TREC 2002的索评测中，本文的方法取得了良好的性能表现。通过遗传算法对这种方法的稳定性和参数配置进行了验证，为自动参数优化的进一步研究奠定了基础。
精细构造解释与储层预测技术在泌阳凹陷中南部地区二次勘探中的应用

泌阳凹陷属陆相断陷式碎屑沉积盆地，中南部地区储层为扇三角洲和辫状河三角洲前缘沉积，相变快，成岩不均一，地震速度变化快，储层呈砂泥薄互层状，圈闭类型有断鼻、断块和地层加岩性圈闭。针对深层系构造特征、储层特征及速度变化特点，采用层位标定与层位综合解释技术、断层精细解释技术和变速成图技术，有效地进行了构造精细解释；采用测井约束波阻抗反演和地震属性分析技术，进行了砂泥薄互层储层预测。研究成果在泌阳凹陷中南部地区二次勘探中取得明显效果。
薄互层储层预测方法

针对松辽盆地葡萄花油层三角洲沉积薄互层储层的特点，研究不同微相的砂岩与测井特征、地震属性的关系，探讨利用沉积微相、波形特征定性侦测砂岩储层发育带的技术。利用地震属性预测技术定量预测储层厚度结果表明，本区整个油层砂岩总厚度与地震属性有很高的相关度，厚砂层的预测符合率较高。
一个可能的生物礁预测

礁体预测是长兴组储层预测的关键，然而“想打的打不到，不想打的又碰到”是长兴组生物礁预i贝0现实状况的描述。相关的研究将生物礁的反射特征归结为直接标志和间接标志两大类，但现有资料表明，具有这样典型反射特征的生物礁是少部分，大多数生物礁反射特征并不明显。在石柱复向斜建南构造带上，发现了长兴组顶一个很明显的异常反射，通过礁体的沉积特征、地震相特征及AVO响应特征对该异常反射进行全面分析，认为很可能是礁的异常反射，但有待钻井最终验证。
证券投资基金的管理费率设计研究

针对目前不同公司的新基金在发行中都面临投资者认购不积极的问题，认为基金经理和投资者之间关于基金经理投资能力的信息不对称是造成这一现象的主要原因之一，然后，利用期权定价的思想，将管理费率和基金业绩及市场收益挂钩，设计了上下限费率条款，通过仿真计算，分析了投资能力不同的基金为吸引投资者的积极认购，在费率参数设计上的区别。
大地电磁法张量阻抗通用计算公式

在研究大地电磁三维数值模拟时必须解决如何利用数值模拟得到的电、磁场值计算张量阻抗元素的问题。为此，本文从理论上系统地推导了适用于复杂地电模型的张量阻抗通用计算公式，给出了由数值模拟得到的离散电场、磁场值计算阻抗元素的方法。通过深入分析，还得到了每个通用张量阻抗元素计算公式的直观表达式，显示出明确的物理意义。例如％表示在源场α·SX和SY的作用下，在x方向产生的电场分量加权线性叠加结果和在y方向产生的磁场分量加权线性叠加结果的比值，从而深化了对张量阻抗的认识。