mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
基于Win DNA与DCOM的多层分布式Web应用系统

本文论述了Windows DNA的结构及其核心部件--COM+的概念与多种服务.分析与研究了多层分布式Web应用系统的特点及支持所需软件体系结构,结合ASP与COM+给出了构造分布式Web应用系统的解决方案.
产后溶血性尿毒症综合征的发病机制及其诊治

产后溶血性尿毒症综合征(postpartum hemolytic uremic syndrome,PHUS)是指在产后(个别可发生在孕末期临产前)以急性微血管病性溶血性贫血、血小板减少及急性肾功能衰竭三大特征为主的综合征.本病特点是妊娠过程顺利,但产后发生肾功能衰竭,临床少见,据报道约25000次分娩中发生1例,其中23.0%在妊娠中期即有严重的肾功能损害,其余均发生在产后[1].由于发病急,进展快,病死率高,1966年Waddle首次报道PHUS病死率为83.0%,我国1980年始有PHUS报道,此后至1985年共报道13例,病死率为53.8%.近年由于对该病认识的提高,治疗手段的进步,病死率逐步下降,1994年报道为33.3%.
双壁波纹管应用于市政排水工程

双壁波纹管在施工过程中要做好管道变形、轴线位置偏移、管道与检查井连接等环节的控制,还应注意浮管,管材的环向弯曲刚度和管道变形的检测、管材价格与质量等事项.
非洲菊离体培养增殖技术

非洲菊为菊科大丁草属多年生宿根草本花卉,是世界5大切花之一.因非洲菊传统的分株繁殖系数很低,满足不了市场对种苗的大量需求,而离体快速繁殖可大大提高繁殖系数以达到规模化生产种苗的目的.
酒糟废水处理工艺改造实例

对原有的高浓度酒糟生产废水处理工艺进行改造,前处理由原来简单的离心过滤改为DDG工艺,厌氧部分由厌氧过滤器改造为膨胀颗粒污泥床反应器;厌氧处理出水的COD由改造前的5～10g/L降为改造后的1.5g/L,并且悬浮物含量也明显降低,再经过后续的好氧处理后即可达到国家三级排放标准.
强夯法加碎石桩处理污水厂地基的设计

以某污水处理厂曝气池的地基处理为例,介绍了强夯法加碎石桩加固饱和软土地基的设计方法.实践证明,对于饱和软土,只要设置排水通道,用强夯法加固地基能够达到预期效果.
基于Analysis Services的OLAP展现工具在教务系统中的应用

本文讲述了OLAP的特点,建立数据仓库的步骤,OLAP的设计和实施,并完成了OLAP展现工具proOLAP,proOLAP系统结构和完成的主要功能,并以教务系统为例用proOLAP对学生成绩进行了分析.
Intranet PC终端与PSTN语音交互系统的设计和实现

本文介绍了内部网内PC终端与电话语音交互的整个流程思想及具体实例.系统主要是采用了客户机/服务器模式,利用Windows的多任务机制,结合Windows MDK低层音频服务,Windows Sockets和语音压缩等技术以及现有的CTI应用产品来实现的,这大大方便了PC端用户跟PSTN的联系.
Dormancy release in male flowers of Cryptomeria japonica

To clarify key characteristics of the process whereby dormancy is released in male flowers of Cryptomeria japonica, twigs with male flowers were collected every three days between December 1992 and February 1993. Half of the twigs collected on each date were chilled at 0°C for three days and the cumulative temperatures required by the chilled and non-chilled flowers for florescence were compared. There was no difference in the cumulative temperature required for florescence between chilled and non-chilled male flowers collected before 19 December. However, for samples collected between 21 December and 21 January, the cumulative temperature needed for the florescence of chilled male flowers was 8–68°C lower than that required for non-chilled male flowers. However, there was little difference again in the cumulative temperature required to induce the florescence of chilled and non-chilled male flowers for collection dates later than 24 January. These results suggest that the dormancy of male C. japonica flowers was gradually released by exposure to low temperature and the process was completed by 24 January. The cumulative temperature required for florescence and the sum of the mean daily temperatures between the date of collection and the date of natural pollen dispersal were almost equal after the dormancy of the male flowers was released. The exact day on which pollen will be released can be predicted using the dormancy characteristics of male flowers.
基于内容的视频检索研究

基于内容的检索能使用户根据媒体特征对媒体内容进行检索和查询．由于多媒体数据中含有丰富的视频数据，并且是随时间动态变化的，其特征很难用一般的静态特征来描述，为了取得视频数据的特征，对视频数据的处理非常重要，本文将介绍基于内容的视频检索中相似索引的处理技术和方法。
巩膜环扎联合眼内注气术治疗黄斑裂孔性视网膜脱离

黄斑裂孔性视网膜脱离是视网膜脱离中较复杂的一类,多发于高度近视、外伤病人,对视力损害较大,治疗上比较困难.我科1995～2002年采取巩膜环扎联合眼内注气术治疗黄斑裂孔性视网膜脱离,疗效理想,手术并发症较小,现报告如下.
基于SSL的安全网站的理论与实践

Web服务器和客户机之间的传输数据的安全性一直是电子商务应用的重中之重.本文首先对SSL理论作深入解剖,然后以普遍使用的IIS 5.0 Web Server为例,避开复杂的编程,通过简单的操作具体实现SSL.
B超导向无水乙醇注射治疗复发性甲状腺囊肿的疗效观察

目的探讨B超导向经皮无水乙醇注射(PEI)治疗复发性甲状腺囊肿的安全性、有效性及临床应用价值.方法 PEI治疗32例复发性甲状腺囊肿,按穿刺出囊液量的1/3注入无水乙醇,每周1次,平均2～7次.结果 PEI治疗后甲状腺囊肿容积显著缩小,平均(79.5±3.6)%,有效率达90.6%.随访2年,无一例复发,囊肿平均缩小(91.1±2.1)%,有效率增至100%.未见明显不良反应.结论 PEI治疗复发性甲状腺囊肿是一种安全、有效的非手术疗法.
Intra- and inter-storm oxygen-18 and deuterium variations of rain, throughfall, and stemflow, and two-component hydrograph separation in a small forested catchment in Japan

Inter- and intra-storm oxygen-18 variations in rain, throughfall, and stemflow were measured to estimate accurate new water inputs to the watershed within a 0.84-ha watershed planted with 80-year-old Cryptomeria japonica and Chamaecyparis obutusa artificial forest at the Hitachi Ohta experimental watershed in Japan. In addition two-component hydrograph separation using oxygen-18 concentrations was conducted with four types of new water concentration: (1) incremental volume-weighted mean concentrations of rainfall; (2) constant concentrations of rainfall; (3) incremental volume-weighted mean concentrations of throughfall; and (4) constant concentrations of throughfall. Six storms from June to October 2000 were investigated. In the 26 July, 24 September, and 29 October storms, old-water percentages at the hydrograph peak were more than 56.4%, 66.6%, and 80.4%, respectively. In the 24 September and 29 October storms, the old-water contribution estimated by incremental volume-weighted mean concentrations of throughfall was the greatest. On the other hand, this was the smallest after the 26 July storm. Thus, by estimating the new water inputs more accurately, the old water contribution could be either large or small. In addition, there was a relative difference of about 5–10% between old water percentages calculated from the four types of new water. The uncertainty associated with the analysis of oxygen-18 concentrations was up to 4.8%. Thus the difference in estimates of new water affected the old water percentage more than the uncertainty of the two-component model itself.
Foley导管阻闭动脉导管行未闭导管缝闭术49例

我院自1990年1月至2001年12月,在体外循环下应用Foley导管治疗49例动脉导管未闭(PDA)病人,现报告如下.一.对象:本组49例,其中男14例,女35例:年龄1-36岁,平均(16.4±8.2)岁;体重8-67kg,平均(33.8±15.8)kg.合并室间隔缺损22例(膜部7例,嵴下型8例、干下型7例),房间隔缺损4例,二尖瓣、三尖瓣返流共6例,主动脉瓣关闭不全1例(中度),肺动脉瓣狭窄1例,左上腔静脉1例,并发感染性心内膜炎8例.
企业集团财务集中管理模式-e化财务集中管理模式的基本框架

在信息时代要提升企业集团财务管理水平，可以将信息技术与先进的管理方法有机融合．构建网络环境下财务集中管理模式-e化财务集中管理模式。e化财务集中管理模式是基于网络环境下实现集团财务统一核算制度、统一报告制度和统一管理制度的一种新的管理模式。集中管理的基础是信息集中，必须利用信息技术构建网络环境．
国有企业整体上市研究——国有企业分拆上市和整体上市模式的案例分析

本文通过对国有企业分拆上市和整体上市模式的案例研究，揭示了分拆上市的弊端．证明了整体上市的可行性，为下一步国有企业改制上市找到了新方向。
Variation of drought over northern China during 1950-2000

Based on China's monthly precipitation data of 629 stations during 1950-2000, we calculated Z indices and separated them into seven Dryness and Wemess grades. Further, a drought area index was proposed to study changes in drought severity in northern China. The results revealed that the different severity of droughts all showed expanding trends in northern China's main agricultural area. Moreover, the area coverage of droughts in different seasons and different regions displayed different trends.
Extreme climate events over northern China during the last 50 years

Climate extremes for agriculture-pasture transitional zone, northern China, are analyzed on the basis of daily mean temperature and precipitation observations for 31 stations in the period 1956-2001. Analysis season for precipitation is May-September, i.e., the rainy season. For temperature is the hottest three months, i.e., June through August. Heavy rain events, defined as those with daily precipitation equal to or larger than 50 mm, show no significant secular trend. A jump-like change, however, is found occurring in about 1980. For the period 1980-1993, the frequency of heavy rain events is significantly lower than the previous periods. Simultaneously, the occurring time of heavy rains expanded, commencing about one month early and ending one month later. Long dry spells are defined as those with longer than 10 days without rainfall. The frequency of long dry spells displays a significant (at the 99% confidence level) trend at the value of +8.3%/10a. That may be one of the major causes of the frequent droughts emerging over northern China during the last decades. Extremely hot and low temperature events are defined as the uppermost 10%daily temperatures and the lowest 10% daily temperatures, respectively. There is a weak and non-significant upward trend in frequency of extremely high temperatures from the 1950s to the mid-1990s. But the number of hot events increases as much as twice since 1997. That coincides well with the sudden rise in mean summer temperature for the same period. Contrary to that, the frequency of low temperature events have been decreasing steadily since the 1950s, with a significant linear trend of-15%/10a.
愿景型领导：中国企业家的实证研究及其启示

本文通过对23位中国企业家的实证研究，得出了具有明显不同的内容导向和心智特征的愿景型领导：灵感主义型、市场主义型和产品主义型：灵感主义型冲动易变，灵感丰富，但忽视产品和市场。市场主义型内省大胆，富有想像力，关注市场，但忽视产品?产品主义型稳重务实，关注组织，关注产品，但忽视市场、23位企业家明显可以分为3种类型：易变者、创造者和改进者。易变者特质主要是灵感主义兼有少许市场主义和产品主义；创造者特质是显著市场主义兼有一定的灵感主义和产品主义；改进者特质主要是产品主义和市场主义。研究表明，企业家成功的关键心智能力不是灵感和想像力，而是远见、洞察力和处理各种关系的聪明；并必须寻求市场和产品间的平衡。
Ecological water demand: the case of the slope systems in the East Liaohe River Basin

The ecological water demand (EWD) is the least water amount required to maintain the structure and the function of the special eco-system and the temporal scale of a study on the EWD must be a season's time. Based on GIS and RS with the source information of hydrological data of 46 hydrological gauges covering 52 years and the digital images of Landsat TM in 1986, 1996 and 2000, the landscape patterns, precipitation and runoff in the East Liaohe River Basin were analyzed.With the result of the above analysis, the spatial and temporal changes of the ecological water demand in the slope systems (EWDSS) of the East Liaohe River Basin (ELRB) were derived.Landscapes in the ELRB are dispersed and strongly disturbed by human actions. The hydrological regime in ELRB has distinct spatial variations. The average annual EWDSS in the ELRB is 504.72mm (324.08-618.89 mm), and the average EWDSS in the growth season (from May to September) is 88.29% of the year's total EWDSS .The ultimate guaranteeing ratio of the EWDSS in ELRB is 90%.The scarce EWDSS area in the whole year and in the growth season are 60.47% and 74.01% of the entire basin respectively. The trend of scarce EWDSS area is most serious according to the quantity and area of scarce EWDSS regions.
Spatial distribution of sandy desertification change in the west of Jilin Province

The sandy land of the western part of Jilin Province is located in the ecotone ofsemi-humid and semi-arid area in the temperate zone of China. The sandy desertification has widelyspread in the region because of the vulnerable natural conditions and the unreasonable humanactivity; as a result of this, the precious land resources and the economic development in the areahave been seriously impacted. In this paper, the sandy land ecologic environment geographicinformation system is established based on the multi-spectral, multi-temporal Landsat TM images andfield investigation. The comprehensive indexes of sandy desertification extent assessment whichinclude vegetation degradation, wind erosion extent and soil depth are presented to classify the sandyland in western Jilin into three levels--slight, moderate and severe sandy desertification with thesupport of GIS platform. The results demonstrate that the sandy desertiffcation has been partlycontrolled in the past twenty years, except some small sites. However, this doesn't necessarily meanthat there is nothing for more concern. The two main causes of sandy desertification have not beeneliminated yet, one is its natural factor, especially the physical and chemical characters of sandy soiland dry climate; another is the immoderate economic activity of human being that has highlyaccelerated the sandy desertification process.
基于复相关系数法的公司绩效评价实证研究

国内比较有影响的企业绩效评价方案，一是中国诚信证券评估有限公司与《中国证券报》联合每年进行的深沪两市上市公司经营绩效综合评价所采用的评价方案，二是在国内证券界有相当影响力的《上市公司》杂志从1999年开始进行的“沪市50强上市公司”评选活动所采用的评价方案，三是财政部等4部委联合颁布的企业绩效评价方案，三是财政部等4部委联合颁布的企业绩效评价方案。
A Thermochemical Study on Complex Nickel(Ⅱ) L-α-Histidine

The formation enthalpy of complex nickel(Ⅱ)-histidine(His) in water was determined by means of microcalorimetry in the temperature range of 298.15-323.15 K. The standard enthalpy of the formation of Ni(His)2+2(aq) was calculated. On the basis of the experimental and the calculated results, three thermodynamic parameters(the activation enthalpy, the activation entropy and the activation free energy), the rate constants, three kinetic parameters(the apparent activation energy, the pre-exponential constant and the reaction order) of the formation reaction of the title complex were obtained.
Delineation of eco-geographic regional system of China

Eco-geographic regionalization has been one of the most important topics in China'sregionalization researches since the end of the 20th century. It is a major ecosystem in geographiczonality. A hierarchical system, which is formed by division or combination of natural features basedon geographic relativity and comparison of major ecosystem factors (including biological andnon-biological) and geographic zonality, is called eco-geographic regional system. This paperintroduces process of China's regionalization development. The first level unit, temperature zone, isdelineated with main criteria of temperature. The second level unit, humidity region, is based oncriteria of water/moisture states. The third level unit, natural region, is divided according to mediumgeomorphologic units. Vegetation types and soils are applied as supplementary criteria to indicatetemperature and water/moisture states. Mapping process from qualitative to quantitative and China'seco-geographic regional system are also explained in this paper.
Photocurrent properties of high-sensitivity GaN ultraviolet photodetectors

GaN epilayers were grown on sapphire substrates by metal-organic chemical vapour deposition. Metal-semiconductor-metal photoconductive detectors were fabricated using this material. The photocurrent properties of the detectors were measured and analysed. The spectrum response shows a high sensitivity in the wavelength region from 330 to 360nm, with a peak at 358nm and a sharp cutoff near 360nm. The maximum responsivities at 358nm were 700A/W (2V) and 7000A/W (30V). The relationship between responsivity and bias indicates that the responsivity increases linearly with bias until 30V. The influence of the spacing between two electrodes on the detector responsivity was also studied.
Immunosuppressive Activities of Fucoidan from Laminaria japonica

Effects of fucoidan from Laminaria japonica on 2,4-dinitrochlorobenzene induced delayed-type hypersensitivity (DTH) reaction and the serum levels of IgG, IgM, complement C3 and C4 were investigated in the present study. Results showed that oral administration of fucoidan at dose of 150 and 300 mg/(kg*d) for 9 days before the hapten challenge significantly inhibited 2,4-dinitrochlorobenzene induced delayed-type hypersensitivity reaction; and also inhibited the humoral immunity. Serum C3 and C4 levels were markedly reduced by fucoidan at dose of 150 and 300 mg/kg; and serum IgG and IgM levels were reduced by fucoidan at dose of 300 mg/kg. The inhibitory effects of fucoidan on delayed-type hypersensitivity suggested that it may be potential medication for chronic inflammatory diseases in the future.
Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant

The origin of pseudo peak was studied by means of micellar electrokinetic capillary chromatography with cetyltrimethylaminium bromide as the pseudo stationary phase. It has been pointed that two peaks may appear for one component under certain conditions. Experiments showed that the relative areas of the two peaks of analyte depended on the time and the temperature of reaction between analyte and surfactant, and the concentration of surfactant in the sample solution. It means that the interaction between the analyte and the surfactant is a slow process, and a stable substance can be produced from the interaction. It is the substance and the analyte that may lead to the formation of two peaks. The fast interaction mechanism between the solute and the micellar should be queried from the experiment result.
Control of spiral waves and turbulent states in a cardiac model by travelling-wave perturbations

We propose a travelling-wave perturbation method to control the spatiotemporal dynamics in a cardiac model. It is numerically demonstrated that the method can successfully suppress the wave instability (alternans in action potential duration) in the one-dimensional case and convert spiral waves and turbulent states to the normal travelling wave states in the two-dimensional case. An experimental scheme is suggested which may provide a new design for a cardiac defibrillator.
Cell image recognition with radial harmonic Fourier moments

Various types of moments have been utilized to recognize image patterns in a number of applications. Multi-distortion invariant - radial harmonic Fourier moments were investigated in the recognition of cell smear images. Image recognition experiments showed that radial harmonic Fourier moments are not only highly concentrated image features but also have a good property of antidistortion and antinoise. They may be used in fast and accurate automatic cell recognition.
Global stabilization of a Lorenz system

In this paper, using feedback linearizing technique, we show that a Lorenz system can be considered as a cascade system. Moreover, this system satisfies the assumptions of global stabilization of cascade systems. Thus continuous state feedback control laws are proposed to globally stabilize the Lorenz system at the equilibrium point. Simulation results are presented to verify our method. This method can be further generalized to other chaotic systems such as Chen system,coupled dynamos system, etc.
Experimental study of conversion from atomic high-order harmonics to x-ray emissions

There are two physical phenomena in a strong laser intensity. One is the high-order harmonic emission; the other is x-ray emission from optical-field ionized plasmas. The experiment of conversion from high-order harmonics to x-ray emissions was given with a 105fs Ti:sapphire laser by adjusting laser intensities. The ingredient in plasma was investigated by the numerical simulations. Our experimental results suggested that the free electrons have detrimental effects on harmonic generation but are favourable for x-ray emission from optical-field ionized plasmas. If we want to obtain more intense harmonic signals as a coherent light source in the soft x-ray region, we must avoid the production of free electrons in plasmas. At the same time, if we want to observe x-rays for the development of high-repetition-rate table-top soft x-ray lasers, we should strip all atoms in the plasmas to a necessary ionized stage by the optical-field-ionization in the field of a high-intensity laser pulse.
Solitons in a generalized (2+1)-dimensional Ablowitz-Kaup-Newell-Segur system

In the previous Letter (Zheng C L and Zhang J F 2002, Chin. Phys. Lett., 19 1399), a localized excitation of the generalized Ablowitz-Kaup-Newell-Segur (GAKNS) system was obtained via the standard Painlevé truncated expansion and a special variable separation approach. In this work, starting from a new variable separation approach, a more general variable separation excitation of this system is derived. The abundance of the localized coherent soliton excitations like dromions, lumps, rings, peakons and oscillating soliton excitations can be constructed by introducing appropriate lower-dimensional soliton patterns. Meanwhile we discuss two kinds of interactions of solitons. One is the interaction between the travelling peakon type soliton excitations, which is not completely elastic. The other is the interaction between the travelling ring type soliton excitations, which is completely elastic.
CAWS600-S型自动站与人工站降水资料的对比分析

随着我国大气探测现代化水平的不断提高,山东省先后有近40个气象台站安装了自动气象站并投入业务运行,其他台站的自动气象站也正在建设中,并将最终取代人工地面观测站成为正式气象记录.
p63基因在喉鳞状细胞癌中的表达及其临床意义

p63基因是由Osada于1998年发现的另一个p53基因家族成员,定位于3q27-3q29.p63与p53蛋白具有非常相似的结构和功能,目前已被认为是一个候选抑癌基因.我们应用原位杂交方法分别检测喉鳞状细胞癌、癌旁增生组织、非典型增生组织和声带息肉中的p63基因表达程度, 藉以探讨p63基因与喉鳞状细胞癌的发生、发展的相互关系.
腹腔镜诊治女性不孕症105例

目的分析不孕症的盆腔因素,评价腹腔镜技术诊治女性不孕症的价值.方法对105例不孕症患者行腹腔镜检查术,寻找不孕原因及进行相应的手术治疗,随访术后妊娠情况.结果105例患者的主要不孕原因按发病率由高到低依次为盆腔粘连、输卵管炎、子宫内膜异位症、多囊卵巢,分别占52.4%、44.8%、23.8%及14.3%.其中单因素不孕者50例,两因素不孕者48例,三因素不孕者2例.术后96例患者得到随访,妊娠率为49.0%,其中单因素不孕者妊娠率为64.0%,两因素以上不孕者妊娠率为32.6%,两者相比差异有显著性(P＜0.05).结论腹腔镜检查可以全面、准确地评价患者的盆腔情况,并同时进行手术,对女性不孕症的治疗有一定效果.
前列腺素E1与高压氧在先天性心脏病肺动脉高压治疗中的应用

目的应用前列腺素E1(PGE1)和高压氧吸入对先天性心脏病(简称先心病,CHD)合并中重度肺动脉高压提高临床手术治疗效果,并初步确定手术时机.方法对10例先心病(CHD)合并中重度肺动脉高压(PH)患儿分别应用PGE1[30 ng/(kg?min)]和PGE1[30 ng/(kg?min)]+高压氧吸入[1～2个疗程(7 d为一疗程),2个标准大气压],PGE1于术前和(或)术后应用,高压氧仅于术前应用,观察手术结果及术后并发症.结果两组在降低平均肺动脉压(mPAP)方面有显著疗效,联合组应用更为显著(P均＜0.05);动脉血氧饱和度(SaO2)、右心射血分数(EF)亦有不同程度改善,术后带机时间明显缩短,术后并发症减少.结论PGE1与高压氧治疗在降低先心病患儿mPAP方面有肯定作用,在提高PH手术成功率、降低病死率及减少并发症方面有明显效果.
面罩机械通气在急性左心衰竭抢救中的临床价值

目的评价面罩机械通气在急性左心衰竭合并低氧血症抢救中应用价值.方法对24例急性左心衰竭患者在常规治疗30 min后不能控制病情加用面罩机械通气,观察治疗效果.结果通气30 min后呼吸困难、紫绀等症状明显改善.2 h后HR、R、MBP明显下降(P＜0.05),PaO_2、潮气量(TV)、LVEF明显增加(P＜0.05),心电图ST-T缺血改变比通气前不同程度改善,心功能进步Ⅰ级13例,心功能进步Ⅱ级9例,总有效率91.7%.面罩耐受性均良好.结论早期合理应用面罩机械通气是抢救急性左心衰竭合并低氧血症的一种快速安全有效的方法.
去大骨瓣开颅超早期显微手术治疗重症高血压脑出血

目的探讨去大骨瓣开颅超早期显微手术治疗重症高血压脑出血的疗效.方法根据头颅CT显示血肿部位和血量,35例均采用去大骨瓣开颅,经侧裂入路或经皮质入路显微手术方法,清除脑内血肿.结果术后24 h～3 d复查头颅CT,示血肿清除及无脑挫裂伤;随访30例5～20个月,按ADL分级,Ⅰ级6例,Ⅱ级10例,Ⅲ级12例,Ⅳ级5例,Ⅴ级死亡2例.恢复良好率(达Ⅲ级以上)占80%.结论去大骨瓣开颅超早期显微手术是治疗重症高血压脑出血行之有效的方法,对脑重要功能无附加损伤,能进一步提高病人的生存生活质量.
松嫩平原西部玉米节水增产技术

玉米是松嫩平原西部的主要粮食作物,由于多种因素的影响,尤其是受降水的制约,玉米产量长期处于徘徊状态,制约了区域粮食产量的发艮.通过采用工程节水技术、生物节水技术、农田覆盖节水技术、耕作节水技术、水肥调控技术、化学调控节水技术和合理的节水灌溉制度等多种途径,改善玉米生长的环境条件,提高玉米产量达到10 000 kg/hm2以上,提高水分利用率30%.
高血压病肾脏损害的诊断与防治

高血压病(hypertensive disease)又称为原发性高血压(primary hypertension或essential hypertension),是一种以血压升高为主要临床表现而病因尚未明确的独立性疾病,占所有高血压患者的90%以上.目前认为高血压病是在一定的遗传改变基础上,由于多种后天因素的作用导致正常血压调节机制失平衡所引起[1-5].高血压病的发病与肾脏的关系是十分密切的.肾脏既是血压调节的重要器官,同时又是高血压损害的主要靶器官之一.一方面,肾脏通过改变对水钠代谢的调节以及分泌加压和降压物质,从多方面影响血压.其中肾脏对血容量的调节以及对肾素-血管紧张素系统的调节起主要作用.尽管有多种原因可以导致高血压,但肾脏功能特别是对水钠排泄的异常是形成或维持高血压的关键.当然肾脏功能的障碍不一定是某一种高血压的直接原因,肾功能障碍也不完全来源于肾脏本身,可以是肾外许多神经体液因素作用于肾脏所产生的继发性变化.但可以这样说:如果肾脏功能完全处于正常,高血压状态不可能持续存在.另一方面,高血压又可造成肾脏功能受损,若高血压一旦对肾脏造成损害,又可以因肾脏对体液平衡调节以及血管活性物质等代谢障碍,加剧了高血压的严重程度,并最终导致肾功能不全[1,2].……
乳腺叶状囊肉瘤二例

例1 女,50岁.主因右乳肿物6年伴胀痛1个月收住院.患者于6年前无意中发现右乳肿物,约枣样大小,不伴疼痛,针吸细胞学诊断"增生乳管上皮细胞",服"乳痹消"治疗,效果欠佳,肿物渐生长未予重视.1个月前,右乳轻度胀痛,不伴乳头溢液,肿物生长加快,3次针吸均未找到癌细胞.
CT诊断成人肠套叠一例

患者 男,69岁.反复腹胀1个月,腹痛30余小时入院.查体:T 39.1℃,P 85次/min,Bp13/9kPa,痛苦面容,腹部稍膨隆,右侧中下腹扪及一包块,质软,边界不清,右中下腹压痛、反跳痛明显.肠鸣音减弱,偶可及气过水声.实验室检查:WBC 20.9*10~9/L,N 0.888,大便潜血试验(+).
发达社会疾病--创伤

"病"和"伤"是危害人类健康乃至生命的两大类疾患.近几十年来,医学有了很大的发展,许多疾病已能得到有效的诊治,但创伤却有所不同.一方面,创伤的救治技术有了很大的进步,一些过去认为必死无疑的危重创伤病人也可能救活以至治愈;另一方面,创伤的发生率不断增高,死伤人数逐年上升,因此创伤已被称为"现代社会疾病"或"发达社会疾病".
二十一世纪初期我国麻醉学发展概况

近年来,我国麻醉学的发展极为迅速,就专业涉猎范围而言,麻醉已不仅仅局限于手术室内.由于麻醉科医生具备呼吸管理经验,处理心血管意外的能力以及各种神经阻滞的技巧,麻醉学已经发展延伸出几个分支专业,即急救复苏、重症监护病房(ICU)、围手术期生理调控和疼痛治疗.特别是进入21世纪以来,随着循证医学(evidence-based medicine,EBM)的观念越来越引起临床麻醉医生的重视,麻醉学专业无论在临床麻醉和基础研究方面都取得了长足的进步,麻醉学科的整体水平得到全面提高,与国际上发达国家的麻醉学发展水平之间的差距越来越小。
B型利钠肽检测对心力衰竭患者的临床评估

近年的研究表明,B型利钠肽(BNP,又称脑钠肽)是在心室容积扩张和压力负荷增加时,由心室释放的一种心脏神经激素.本研究探讨BNP与心力衰竭(心衰)患者的NYHA分级、左室舒张末横径(LVEDD)、左室射血分数(LVEF)的相关性,为临床对心衰的客观评估及早期诊断提供理论依据.……
血管内皮生长因子对恶性腹水诊断的临床价值

血管内皮生长因子(VEGF)是与微血管通透性及血管生成有关的细胞因子,它可以促进宿主毛细血管内皮细胞有丝分裂和刺激毛细血管生长,对于血管内皮细胞的生长、更新、修复和再生是必不可少的.因此,亦可为转移瘤的生长提供足够的血液供应.本研究主要观察VEGF在不同性质腹水中的浓度,探讨VEGF对良、恶性腹水实验室鉴别诊断的临床价值.……
纤维肌痛

纤维肌痛(fibromyalgia,FM)是一个既熟悉又陌生的疾病.是一个介于健康和疾病之间的症状.Goldberg和Bennett指出 FM的疼痛是由于中枢神经的过敏(central sensitization),把周围机体组织一般性疼痛感受高度总合,使患者的疼痛感受高于正常者的感受(pain,2003,102:87-95).
赖特综合征诊治指南(草案)

赖特综合征(Reiter's syndrome)是以关节炎、尿道炎和结膜炎三联征为临床特征的一种特殊临床类型的反应性关节炎,常表现为急性关节炎并且伴有独特的关节外皮肤黏膜症状.1916年Reiter首先作了本病出现关节炎、非淋球菌性尿道炎和结膜炎三联征的描写,故名.
中药贴片电超导透皮给药佐治小儿腹泻

目的探讨中药贴片经电超导透皮给药佐治小儿腹泻的疗效.方法将入选的210例小儿腹泻患者随机分成两组,对照组105例采用常规治疗,观察组105例在常规治疗基础上采用专用中药贴片经电超导透皮给药治疗,药贴置于脐部两侧(天枢穴).结果两组有效率比较差异有显著性(P＜0.05).结论在常规治疗基础上采用专用中药贴片经电超导透皮给药佐治小儿腹泻有效、安全、无明显毒副作用.
非小细胞肺癌组织中脆性组氨酸三联体和p53的表达及意义

我们检测非小细胞肺癌的脆性组氨酸三联体(FHIT)和p53的蛋白表达水平,分析它们与临床病理特征及预后的关系,旨在了解FHIT蛋白的改变与肺癌的发生发展的关系,并为临床诊治肺癌提供理论依据.……
前降钙素与危重病

严重感染、感染性休克、感染致多脏器衰竭患者病死率可达35%～70%[1],主要是由于缺乏早期诊断.因此在细菌学检查、实验室检查前对严重感染的诊断极为重要,有利于及时确定医疗方案,了解疗效,判定预后.过去通过全身炎性反应的症状及体征可作出严重感染或脓毒症的诊断[2],但类似的症状及体征也可出现于非感染性炎症.因此只通过临床表现诊断感染非常困难.我们希望找到一种鉴定炎症的标志物,以利早期治疗,减少发病率和病死率.临床上理想的标志物应易于检测,具有高度的特异性和敏感性,在疾病的早期即可作出诊断,并与感染的严重性有相关性,从而评价疗效及预后.目前已有许多参数(细胞因子等)用于实验,但能达到标准的极少.……
关注干细胞研究进展发挥医学影像学在该领域的作用

干细胞研究是一门新兴的学科,干细胞生物学研究与应用几乎涉及所有的生命科学和生物医学领域,除了在细胞治疗、器官移植、基因治疗具有重要作用外,还将在新基因发掘与基因功能分析、新药开发、组织工程等领域发挥重大的影响.因此,随着1998年人胚胎干细胞的分离及体外培养获得成功后,干细胞研究热潮一浪高过一浪.1999年美国<科学>(
眼眶内囊性畸胎瘤超声表现1例

患者女,25岁,因左上眼睑包块8年,逐渐增大伴疼痛,视物模糊2年入院.查体:右眼视力 1.0,左眼 0.1.右眼外观无明显异常.左眼上睑饱满,可触及1个约 25 mm*20 mm包块,与皮肤无粘连、质软、稍压痛、侵入眶上缘内,眼裂变小.球结膜无充血,角膜透明,前房深浅正常,瞳孔 3 mm,对光反射存在.眼底未见异常.临床诊断:左眼眶内肿瘤.
孤立性脉络膜血管瘤的治疗

络膜血管瘤属于错构瘤性良性肿瘤,它有两种形态,一是边界清楚的孤立性脉络膜血管瘤(circumscribed choroidalhemangioma),另一种则为弥漫性的肿瘤,它常伴有颅面血管瘤病(Sturge-Weber综合征).孤立性脉络膜血管瘤都生长在赤道部以后,大多数肿瘤位于以中心凹为中心的25°范围内.尽管未见肿瘤恶变及肿瘤极少增大,但常出现渗漏引起浆液性视网膜脱离而明显影响视力[1].