mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Development of cork oak (Quercus suber L.) seedlings in response to tree shelters and mulching in northwestern Tunisia

The need for reforestation in cork oak (Quercus suber L.) areas is challenged by difficulties. Principal among these is herbivory of young plants, vegetative competition, and slow growth rates of cork oak seedlings. We evaluated the early development of cork oak seedlings treated using tree shelters and mulching in northwestern Tunisia. We tested three tree shelter treatments (non-vented, vented, and control) to shield seedlings from animal damage and five mulch types to control competing vegetation (Italian Stone Pine, Lentisk, combination of Italian Stone Pine and Lentisk (organic mulches), gravel (inorganic mulch) and no mulch). At the end of the two-year experiment, sheltered seedlings were 89-99% taller than unshelteredseedlings and had higher numbers and lengths of shoot growth flushes. In contrast, both stem diameter growth and dry weight biomass (from samples extracted after two years) were significantly reduced inside tree shelters. Root-to-shoot ratio was not significantly different in sheltered vs. unsheltered seedlings, suggesting that tree shelters do not adversely affect this parameter. Mulching alone did not favour growth, but could be beneficial when combined with tree shelters. The combination of vented tree shelters and gravel mulch was the most effective treatment for promoting diameter, height and stem volume growth.
Forest structure and woody plant species composition after a wildfire in beech forests in the north of Iran

Beech (Fagus orientalis Lipsky) forest covers about 565,000 ha of land in Guilan province, north of Iran and forms a major carbon pool. It is an important economic, soil protection and recreation resource. We studied long-term effects of fire on the structure and composition 37 years after fire occurrence in these forests. To do this research, we selected 85 ha burned and 85 ha unburned beech forests). The results indicated that the fire had not changed the overall uneven-aged structure, but it changed forest composition from pure stands to mixed stands that now include species such as Carpinus betulus, Acer cappadocicum and Alnus subcordata. The density of trees and regeneration was significantly increased, while the density of shrubs significantly decreased. The main reasons for increased tree regeneration were attributed to (1) reduction of litter depth, and (2) increase in available light from opening of the canopy and reduction in shrub competition. It is apparent that the forest is on a path to return to its natural state before the fire after 37 years.
实时定量PCR检测胆囊结石患者胆汁中华支睾吸虫DNA

目的探讨用实时定量PCR技术检测胆囊结石患者胆汁标本中的华支睾吸虫DNA。方法随机选取40例实施内镜取石保胆手术胆囊结石患者的胆汁标本,对胆汁沉渣分别进行显微镜检及实时定量PCR检测。同时收集患者的血清、粪便标本,分别进行免疫学检测及粪便镜检。结果建立的实时定量PCR法特异性良好,对华支睾吸虫DNA的最低检测限为0.1pg/μL;40例胆囊胆汁标本中有21例镜检发现虫卵(阳性率为52.5%),实时定量PCR检测结果与镜检结果一致;免疫学检测抗体阳性20例(阳性率为50%),与前二者的符合率为82.5%(33/40);粪便镜检虫卵阳性9例(阳性率为22.5%),与其他3种方法比较,差异有统计学意义(χ~2=9.12,P<0.01)。结论建立的实时定量PCR技术可用于胆囊结石患者华支睾吸虫感染的检测。
MicroRNA and histopathological characterization of pure mucinous breast carcinoma

Objective: Pure mucinous breast carcinoma (PMBC) is an uncommon histological type of breast cancer characterized by a large amount of mucin production. MicroRNA (miRNA) is a large class of small noncoding RNA of about 22 nt involved in the regulation of various biological processes. This study aims to identify the miRNA expression profile in PMBC. Methods: MiRNA expression profiles in 11 PMBCs were analyzed by miRNA-microarray and real-time polymerase chain reaction (PCR). Thirty-one PMBCs and 27 invasive ductal carcinoma of no special types (IDC-NSTs) were assessed by immunohistochemistry using antibodies against ER, PR-progesterone receptor, HER2, Ki-67, Bcl-2, p53, PCNA, and CK5 and 6. Results: We analyzed the miRNA expression in 11 PMBCs and corresponding normal tissues using miRNA-microarray and real-time PCR, and found that miR-143 and miR-224-5p were significantly downregulated in mucinous carcinoma tissue. Compared with IDC-NSTs, PMBC showed a significantly higher ER positive rate, lower HER-2 positive rate, and lower cell proliferation rates. Conclusions: To our knowledge, this is the first study to demonstrate the miRNA expression profile of PMBC, and our findings may lead to further understanding of this type of breast cancer.
Assessment of Soil Water Content in Field with Antecedent Precipitation Index and Groundwater Depth in the Yangtze River Estuary

To better understand soil moisture dynamics in the Yangtze River Estuary (YRE) and predict its variation in a simple way, a field monitoring experiment was carried out along the north branch of the Yangtze River, where seawater intrusion was strong and salt-water variation is one of the limiting factors of local agriculture. In present paper, relation between antecedent precipitation index (API) and soil water content is studied, and effects of groundwater depth on soil water content was analyzed. A relatively accurate prediction result of soil water content was reached using a neural network model. The impact analysis result showed that the variation of the API was consistent with soil water content and it displayed significant correlations with soil water content in both 20 and 50 cm soil layer, and higher correlation was observed in the layer of 20 cm. Groundwater impact analysis suggested that soil moisture was affected by the depth of groundwater, and was affected more greatly by groundwater at depth of 50 cm than that at 20 cm layer. By introducing API, groundwater depth and temperature together, a BP artificial network model was established to predict soil water content and an acceptable agreement was achieved. The model can be used for supplementing monitoring data of soil water content and predicting soil water content in shallow groundwater areas, and can provide favorable support for the research of water and salt transport in estuary area.
An Experimental Method to Quantify Extractable Amino Acids in Soils from Southeast China

The extraction and comparison of soil amino acids using different extractants (deionized water, K_2SO_4, Na_2SO_4, NaCl, KCl) were reported. Results showed that 0.5 mol L~(-1) K_2SO_4 with a 5 times extraction was a better method to assess the concentration of extractable amino acids in soils. The total amino acids extracted from soil planted for tea were similar to the total inorganic nitrogen. While they extracted from vegetable soil and paddy soil were much lower than the total inorganic nitrogen.
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil

Increasing K~+ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K~+ adsorption because of changes in the chemical and mineralogical properties of a rice (Oryza sativa L.). The aims of this study were (i) to determine clay minerals in paddy soil clay size fractions using X-ray diffraction methods and a numerical diagramdecomposition method; (ii) to measure K~+ adsorption isotherms before and after H_2O_2 oxidation of organic matter, and (iii) to investigate whether K~+ adsorption is correlated with changes in soil chemical and mineral properties. The 30-yr longterm fertilization treatments caused little change in soil organic C (SOC) but a large variation in soil mineral composition. The whole-clay fraction (<5 μm) corresponded more to the fertilization treatment than the fine-clay fraction (<1 μm) in terms of percentage of illite peak area. The total percentage of vermiculite-chlorite peak area was significantly negatively correlated with the total percentage of illite peak area in the <5 μm soil particles (R=-0.946, P<0.0006). Different fertilization treatments gave significantly different results in K~+ adsorption. The SOC oxidation test showed positive effects of SOC on K+ adsorption at lower K~+ concentration (120 mg L~(-1)) and negative effects at higher K~+ concentration (240 mg L~(-1)). The K~+ adsorption by soil clay minerals after SOC oxidization accounted for 60-158% of that by unoxidized soils, suggesting a more important role of soil minerals than SOC on K~+ adsorption. The K~+ adsorption potential was significantly correlated to the amount of poorly crystallized illite present (R=0.879, P=0.012). The availability of adsorbed K~+ for plant growth needs further study.
Maize Yield Gains in Northeast China in the Last Six Decades

In 2010, Chinese maize yields increased from 961.5 kg ha~(-1) in 1949 to 5 453.8 kg ha~(-1). This increase is the result of genetic improvements, an increase in nitrogen application, and refinement of planting densities. The objective of this study was to provide a theoretical basis for maize production research by analyzing the maize yield gain characteristics. Six varieties of maize were selected for the study; each selection is representative of a typical or commonly used maize variety from a specific decade, beginning from the 1950s and continuing through each decade into the 2000s. The selections and their corresponding decade were as follows: Baihe, 1950s; Jidan 101, 1960s; Zhongdan 2, 1970s; Yedan 13, 1980s; Zhengdan 958, 1990s; and Xianyu 335, 2000s. Each variety was planted under four different densities (37 500, 52 500, 67 500, and 82 500 plants ha~(-1)) and four different nitrogen applications (0, 150, 225, and 300 kg ha~(-1)) to study the effects on yield gain characteristics. The obtained results demonstrated that there was a maize yield increase of 123.19% between the 1950s variety and the 2000s variety. Modern Chinese maize varieties had a higher yield advantage. They also displayed the additional potential to acquire higher yield under increased planting densities and nitrogen applications. At the present cultivation levels (planting at 67 500 plants ha-1 with 225 kg ha~(-1) nitrogen application), the contribution types and corresponding yield increase percentages were as follows: genetic improvement, 45.37%; agronomic-management improvement, 30.94%; and genotype× agronomicmanagement interaction, 23.69%. At high-yielding cultivation levels (planting at 82 500 plants ha~(-1) with 300 kg ha~(-1) nitrogen application), the contribution types and corresponding yield increase percentages were as follows: genetic improvement, 31.30%; agronomic-management improvement, 36.23%; and genotype × agronomic-management interaction, 32.47%. The contribution of agronomic-management and genotype × agronomic-management interaction to yield increase would be larger with the corresponding management improvement. To further increase maize grain yield in China, researchers should further examine the effects of agronomic-management on maize yield and the adaptation of variety to agronomic-management.
Energy Requirements for Maintenance and Growth of German Mutton Merino Crossbred Lambs

A comparative slaughter trial and a metabolism trial were conducted to determine the requirement of net energy (NE) and metabolizable energy (ME) by the crossbreed of German Mutton Merino×Inner Mongolia Merino for fattening from 35 to 50 kg of body weight (BW). 49 crossbred female lambs ((33.9±2.3) (SD) kg BW) of German Mutton Merino×Inner Mongolia Merino were used. 34 lambs were randomly chosen for comparative slaughter, which were offered an identical mixture diet (concentrate:roughage=55:45) at 100, 75 or 55% of ad libitum intake, whereas the remainders were used in the metabolism trial to evaluate the ME of the diet after methane production was measured by open-circuit respirometry. As feed intake decreased from 100 to 75 and 55% of ad libitum intake, the apparent digestibility of dry matter (DM) linearly increased (P=0.010) from 60.8 to 63.6 and 66.9%, respectively, and methane production decreased from 52.1 to 44.3 and 39.9 L d~(-1), respectively, but the ratio of methane energy to gross energy intake increased linearly (P=0.010) from 8.20 to 8.96 and 10.97%, respectively. Consequently, the ME values of the diet increased from 9.35 to 9.64 and 9.85 MJ kg~(-1) DM, respectively. The NE requirement for maintenance (NE_m) was 255 kJ kg~(-1) BW~(0.75), and the ME requirement for maintenance (ME_m) was 352 kJ kg~(-1) BW~(0.75), with a partial energy efficiency for maintenance (k_m) of 0.72. The NE requirement for growth (NE_g) ranged from 1.26 to 4.66 MJ d-1 as average daily gains increased from 100 to 300 g d~(-1), with a partial energy efficiency for growth (k_g) of 0.45. These results indicated that the NE_g required by crossbred female lambs of German Mutton Merino×Inner Mongolia Merino was lower than the recommendation of the American or British nutritional system.
Molecular Cloning and Characterization of Three Novel Genes Related to Fatty Acid Degradation and Their Responses to Abiotic Stresses in Gossypium hirsutum L

Fatty acid metabolism is responsible not only for oilseed metabolism but also for plant responses to abiotic stresses. In this study, three novel genes related to fatty acid degradation designated GhACX, Gh4CL, and GhMFP, respectively, were isolated from Gossypium hirsutum acc. TM-1. The phylogenetic analysis revealed that amino acid sequences of GhACX and GhMFP have the highest homology with those from Vitis vinifera, and Gh4CL has a closer genetic relationship with that from Camellia sinensis. Tissue- and organ-specific analysis showed that the three genes expressed widely in all the tested tissues, including ovules and fiber at different developing stages, with expressed preferentially in some organs. Among them, GhACX showed the most abundant transcripts in seeds at 25 d post anthesis (DPA), however, GhMFP and Gh4CL have the strongest expression level in ovules on the day of anthesis. Based on real-time quantitative RT-PCR, the three genes were differentially regulated when induced under wounding, methyl jasmonate (MeJA), cold, and abscisic acid (ABA) treatments. The characterization and expression pattern of three novel fatty acid degradation related genes will aid both to understand the roles of fatty acid degradation related genes as precursor in stress stimuli and to elucidate the physiological function in cotton oilseed metabolism.
MITF与Waardenburg综合征

在生物学上,许多具有重要意义的发现是从研究小鼠开始的,MITF也不例外。1992年,第一例Mitf插入突变转基因小鼠被报导,它是建立在C57BL/6xC3H杂交背景上的VGA-9鼠系,具有特定的表型:白色皮毛,小眼畸形,纯合子VGA-9小鼠在出生2个月时丧失对声音的反应;电镜观察可见VGA-9小鼠耳蜗血管纹中间细胞即黑色素细胞缺失。在1993年和1994年,VGA-9小鼠的基因,即Mitf基因和它的人类同源基因MITF基因被成功克隆,这种小鼠也被用作Waardenburg综合征的动物模型。至今为止,在Mitf基因位点上,共有20多个等位基因被鉴定。
GJB2结构功能及致病机制研究

遗传性耳聋包括非综合征型耳聋(non-syndrom?ic hearing impairment,NSHI)和综合征型耳聋(syn?dromic hearing impairment,SHI),其中NSHI占70 %,遗传缺陷是以感音神经性聋为主,基本无其他异常;SHI占30%,临床表现除听力障碍以外还伴有其他症状和体征。迄今为止,发现400多个遗传性综合征与耳聋有关,140多个基因位点与NSHI有关,确定60多个耳聋基因。缝隙连接蛋白2简称GJB2(gap junction protein, beta-2),是第一个被发现导致常染色体隐性遗传性耳聋的位点,因此被命名为DF?NB1。1997年发现GJB2突变与NSHI相关,包括常染色体显性遗传性聋DFNA3和常染色体隐性遗传性聋DFNB1。常染色体隐性遗传性耳聋患者中,约有50%为GJB2突变引起,也称为易感基因。我国GJB2突变检出率高达21.01%,GJB2突变在遗传性耳聋中占有非常重要地位。GJB2突变可引起NSHI,也可引起SHI,在NSHI中既有常染色体隐性遗传,也有显性遗传,而在SHI中只发现显性遗传,目前无隐性遗传报道。本文将综述GJB2结构和功能以及在不同遗传方式下GJB2突变可能的致聋机制。
经导管主动脉瓣置入术救治重度主动脉瓣狭窄患者2例分析

主动脉瓣狭窄(AS)是常见的瓣膜性心脏病,随着年龄的增加,因局部严重钙化引起的AS发病率明显上升,超过65岁以上的人群的发病率为2% ~7%.AS患者一旦出现症状预后很差,平均生存期在出现心绞痛、晕厥和心力衰竭后分别为5年、3年和2年,未行手术干预的1年病死率为38%。药物治疗仅能一过性改善症状,对预后无作用;外科换瓣治疗是AS治疗的首选,但对于高龄且合并多脏器功能不全的患者,外科手术风险大,部分患者不能耐受。经导管主动脉瓣膜置换(TAVI)具有微创、无需体外循环和输血以及恢复快等优点,为外科手术高危或不能耐受手术的AS患者提供了一种新的治疗手段。该技术在国外尤其是欧洲已成熟开展,截至目前全球有超过60 000例患者接受了TAVI手术。经浙江省卫生厅医政处和浙江大学医学院附属第二医院伦理委员会批准,以及患者和家属充分知情同意后,2013年3月11日,笔者成功开展了2例经导管主动脉瓣置人术并进行了1月随访,现报道如下。
乳腺胶原小体病2例报道

乳腺胶原小体病(collagenous spherulosis,CS)是一种罕见的良性病变。由Clement在1987年首先描述,多是在镜下偶然所见,呈单灶或多灶性分布。此病变常与其他良、恶性增生性病变相伴随,易与乳腺导管不典型增生、筛状导管原位癌及腺样囊性癌等相混淆。现结合本院遇到的2例乳腺胶原小体病的临床病理特点并结合相关文献报告如下,以进一步加深认识。
大麻素2型受体镇痛机制的研究进展

由于大麻素2型受体(cannabinoid receptor 2,CB2受体)主要分布于外周,其镇痛效应没有中枢的精神作用,是镇痛治疗的重要靶标。CB2受体激动剂在慢性痛,特别是炎性痛、神经病理痛中的治疗作用最近获得重视,高亲和力的CB2受体外源性配体被逐步研发。本文就CB2受体镇痛机制的研究进展进行简单介绍,为CB2受体激动剂的临床应用提供理论依据。
对血流感染实验室诊断的最新认识

血流感染(BSI)包括菌血症、败血症和脓毒症,是危及人类生命的全身性感染疾病,严重者可引起休克、弥散性血管内凝血(DIC)、多脏器功能衰竭乃至死亡。美国每年发生败血症约750 000例,并导致大约215 000例死亡~([1])。在儿童中革兰阳性菌和革兰阴性菌引起的BSI死亡率分别为19.2%和45.2%~([2])。本综述通过国外血培养相关文献中的精髓,向国内同仁介绍BSI实验室检查最新进展,为提高国内BSI的诊断水平提供参考。
Specific Index Parameter Definition for Quantitative Evaluation of Electromagnetic Actuator Topologies

The fast electromagnetic drive mechanism based on fast switch shows extensive applications in many areas,but there is still a lack of unified evaluation parameters as to evaluate the dynamic characteristics due to diversity and complexity of the mechanisms.Three interrelated evaluation parameters are presented for topology analysis,namely the electromagnetic force sensitivity coefficient,the initial time constant and the sensitivity contribution coefficient.The specific parameters based on evaluation can provide a basis for structural performance assessment as well as topology optimization.Comparison between the dynamic parameters of the discoid repulsion mechanism and the solenoid thrust mechanism shows that,the discoid one is superior to the solenoid one.The proposed research is to establish a general methodology for topology analysis and optimization of the electromagnetic mechanisms.
State Evaluation Method Based on Multiagent System for High Voltage Circuit Breaker’s Mechanical Properties

To realize multi-signal joint diagnosis in circuit breaker’s state evaluation methods,and to improve their evaluation accuracy,we proposed an intelligent evaluation model of circuit breaker mechanical properties based on multiagent system.Taking a circuit breaker which has mono-stable permanent magnetic operating mechanism as the example,its model involves four kinds of signals: auxiliary contact,operating mechanism current,travel of the contact,and mechanical vibration.Detailed analyses on the evaluation agent’s architecture and the process of the system’s multiagent evaluation and ratiocination were also proposed.Moreover,it is proved by three application cases that the proposed method could accurately evaluate circuit breaker status not only with normal signals,but also in certain signal failure situations;meanwhile the model has a strong self-learning ability.
Simulation of the Arc Behavior in Puffer-type High Voltage Circuit Breaker Consideringthe Influence of Nozzle Ablation

In order to investigate the influence of nozzle ablation to arc,a 2-D axisymmetric magneto-hydro-dynamics arc model is developed to simulate the arc behavior during the whole interruption process in a puffer-type high voltage circuit breaker,considering the nozzle ablating and the mixing process of Polytetrafluoroethylene(PTFE) vapor with SF6.The results show that the arc radius firstly increases and then decreases as arc current varies according to its sinusoida waveform.At 3.5 ms after arc initiation the nozzle ablation starts,and 2.5 ms later the current nearly reaches its peak value and nozzle ablation develops intensely.Meanwhile the nozzle is blocked by arc at this time and consequently the vapor concentration in nozzle reaches the highest.Then while the current decreasing and open distance increaseing the vapor concentration gradually decreases.Before current zero the extinction peak of arc voltage occurs.It indicates that the PTFE vapor enhances pressure rise in arc quenching chamber and strengthens the arc blocking effect on nozzle;the arc radius is wider and arc temperature is lower when nozzle ablation is considered.
Insulation Defects Discrimination in GIS by Fisher Discriminant Analysis of Partial Discharge

To monitor the condition of online power apparatus accurately and provide appropriate guidance on their maintenance,a fundamental ultra-high frequency(UHF) database of partial discharges corresponding to different types of defects is presented for the observation of insulation state of gas insulated switchgear(GIS).In order to imitate the defects in a GIS online,five types of typical partial discharge(PD) sources(i.e.floating metal,protrusion,bouncing particles,void in spacer,and particle on the surface of solid insulation) were designed and fabricated.A wideband UHF sensor and an amplifier were applied to obtain UHF signals.Based on the characteristics of the five different defects,nine meaningful parameters which were independent of the phase of the applied voltage were extracted from the PD samples and then discussed.In this paper,Fisher discriminant analysis(FDA),a pattern recognition algorithm,was applied for the purpose of classifying the defects.In this way,there was no need to set complicated parameters and kernel function,and the total discrimination accuracy of test samples was 97.6%.It indicates that based on the nine especial parameters,the typical defects in GIS can be identified exactly by means of FDA.Hence the analysis method could be possibly regarded as a universal classification method.
Numerical Prediction on the Thermal Interrupting Capabilityof HV SF_6 Gas Circuit Breakers

The design technology for HV SF_6 gas circuit breakers is very demanding.A numerical method for prediction of the thermal interruption capability of SF_6 gas circuit breakers is established based on the two-dimensional magneto-hydrodynamic(MHD) model and a commercial CFD(computational fluid dynamics) software,FLUENT.Nozzle ablation effect is considered by introducing an independent mass conservation equation for the ablated material to the overall conservation equations of mass,momentum,and energy.The ohmic heating and the radiation of the electric arc are considered in the model by adding relevant source terms.To predict the thermal interruption capability,the arc conductance 200 ns before current zero is used as an indicator.The CFD model is applied for the high current arcing phase,and Mayr arc model is used near the current zero period.The arc conductance at 200 ns before current zero(G200) for various arcing periods are computed by the present method.It shows that there exist a limit of the G200.For those whose arcing periods are within the arcing window,the related G200 are below the limit,therefore result a successful current interruption,and vice versa.The validation of the developed computer simulation tool is therefore verified.The numerical prediction by the simulation tool is verified by the direct interrupting test of 550 kV gas circuit breaker(GCB).The developed computer simulation tool was applied in the design of a 550 kV GCB.Significant benefits have been achieved in terms of both the cost saving and shorten of the development cycle.
简析国家自然科学基金项目计划书指标的科学性与合理性

国家自然科学基金项目(以下简称科学基金项目)是国内各大高校和科研院所开展基础研究与应用基础研究的重要经费来源。其项目支持稳定、连续、强度较高,对人才培养、学科发展、学术交流等方面都起到了重要的推动作用。中国科学院南京土壤研究所(以下简称我所)一直高度重视科学基金的申请和管理工作,积极鼓励和大力支持青年科研骨干申请和承担科学基金项目。
科学普及中的跨界

中国拥有世界上第一部科普法规《中华人民共和国科学技术普及法》,在国务院发布的《国家中长期科学和技术发展规划纲要(2006~2020年)》中,特别提到要“提高全民族科学文化素质,营造有利于科技创新的社会环境”。这些既说明了中国政府对科普的重视程度,也说明了中国科普的任重道远。如何在新时期进一步提升已有的科普的广度和深度,从而在全社会尤其是年轻一代国民培养良好的科学涵养,提高人口素质,需要紧跟时代步伐,对科普的模式进行一些新的尝试和思考,美国科学界与影视娱乐界的跨界合作成功经验值得借鉴。
可体外培养扩增的“人造精子”入选2012年“中国科学十大进展”——专访李劲松研究员

李劲松,中国科学院上海生命科学研究院生物化学与细胞生物学研究所研究员。1971年10月出生于江西省南昌市。1993年7月毕业于江西农业大学畜牧兽医学院,获理学学士学位;1996年7月毕业于扬州大学畜牧兽医学院,获理学硕士学位;2002年7月毕业于中国科学院动物研究所,获得博士学位;2002年8月至2007年7月在美国洛克菲勒大学从事博士后研究;2007年8月获中科院“百人计划”引进国外杰出人才项目资助,担任中科院上海生科院生物化学与细胞生物学研究所研究员,表观重编程研究组组长。
键连接在水轮发电机转子上的应用

键(一般用45号钢制成)是用来连接轴上零件并对其起周向固定的作用,以达到传递扭矩的一种机械零件,键连接是通过键实现轴和轴上零件间的周向固定以传递运动和转矩。作为一种标准件,键在各制造、安装、加工部门中起着不可替代的作用。
非开挖定向钻进牵引拖拉埋管技术在风力发电工程中的应用

通过对导向孔钻进前,钻进过程中、回扩过程及管线回拉后的测量监控,管道气密性试验等工艺指标的控制,通过监理检验,达到了预期制定的控制目标。实践证明,非开挖定向钻进牵引拖拉电缆保护管铺设施工技术为跨河道、盐池、地面建筑物等复杂地段电缆保护管铺设施工,提供了可靠的技术数据和施工经验,该施工方法也得到甲方的充分肯定,作为成熟的施工经验,可以在其他风电工程中采用、推广。
多基线数字近景摄影测量系统Lensphoto在呼和浩特抽水蓄能电站工程中的应用

多基线数字近景摄影测量系统Lensphoto是基于摄影测量专家张祖勋院士最新提出的,以计算机视觉原理(多基线)代替人眼双目视觉(单基线)传统摄影测量原理,从空间一个点由两条光线交会的摄影测量基本法则变化为空间一个点由多条光线交会而成的全新概念,从而研发产生的一套全新的数字近景摄影测量系统。