mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow

Direct numerical simulations of a spatially evolving supersonic flat-plate turbulent boundary layer flow with free Mach number M∞ = 2.25 and Reynolds number Re = 365000/in are performed. The transition process from laminar to turbulent flow is obtained by solving the three-dimensional compressible Navier–Stokes equations, using high-order accurate difference schemes. The obtained statistical results agree well with the experimental and theoretical data. From the numerical results it can be seen that the transition process under the considered conditions is the process which skips the Tollmien–Schlichting instability and the second instability through the instability of high gradient shear layer and becomes of laminar flow breakdown. This means that the transition process is a bypass-type transition process. The spanwise asymmetry of the disturbance locally upstream imposed is important to induce the bypass-type transition. Furthermore, with increasing the time disturbance frequency the transition will delay. When the time disturbance frequency is large enough, the transition will disappear.
Phase synchronization and anti-phase synchronization of chaos for degenerate optical parametric oscillator

We have investigated chaotic synchronization in the generalized sense for the degenerate optical parametric oscillator (DOPO). The numerical results show that two unidirectional coupling DOPOs in chaos can be completely phase synchronization or anti-phase synchronization with a suitable coupling coefficient under which the maximum condition Lyapunov exponent (MCLE) is negative. Phase synchronization and anti-phase synchronization of chaos can be realized through positive and negative coupling. On the other hand, the different synchronization states depend on the coupling types used in the DOPO systems.
Bifurcation behaviours of peak current controlled PFC boost converter

Bifurcation behaviours of the peak current controlled power-factor-correction (PFC) boost converter, including fast-scale instability and low-frequency bifurcation, are investigated in this paper. Conventionally, the PFC converter is analysed in continuous conduction mode (CCM). This prevents us from recognizing the overall dynamics of the converter. It has been pointed out that the discontinuous conduction mode (DCM) can occur in the PFC boost converter, especially in the light load condition. Therefore, the DCM model is employed to analyse the PFC converter to cover the possible DCM operation. By this way, the low-frequency bifurcation diagram is derived, which makes the route from period-double bifurcation to chaos clear. The bifurcation diagrams versus the load resistance and the output capacitance also indicate the stable operation boundary of the converter, which is useful for converter design.
Chaotification, Devaney chaos, TS fuzzy system, two complement arithmetic

Due to the interactions among coupled spatiotemporal subsystems, it is difficult to achieve the tracking control of the coupled spatiotemporal chaos. However, every subsystem of the coupled spatiotemporal chaos can be approximated by a set of fuzzy models, of which each represents a linearized model of the subsystem corresponding to the operating point of the controlled system. Based on these fuzzy models, an H∞ fuzzy tracking control scheme is suggested, where a linear matrix inequalities (LMI) is employed to represent the feedback controller. The parameters of controller are obtained by using convex optimization techniques of LMI. The model reference tracking control of the coupled spatiotemporal chaos is achieved and the stability of the system is also guaranteed. The tracking performance is tested by simulation as an example.
Time evolution of the intensity correlation function in a single-mode laser driven by both the coloured pump noise with signal modulation and the quantum noise with cross-correlation between the real and imaginary parts

Using the linear approximation, we have studied the time evolution of intensity correlation function C(t) in a single-mode laser driven by both the coloured pump noise with signal modulation and the quantum noise with cross-correlation between its real and imaginary parts. In the case of the pump noise with self-correlation time τ<<1, we find that the time evolution of C(t) varies with modulation signal frequency Ω, amplitude B and net gain a0. (i) As Ω increases, the time evolution of C(t) changes from monotonically descending to flat descending and finally to damply oscillating; (ii) as B increases, it changes from monotonically descending to maximal; (iii) as net gain a0 increases, it changes repeatedly from monotonically descending to monotonically ascending and to maximal, finally to monotonically descending again. However, in the case of τ>>1, the time evolution of C(t) only exhibits a form of damping oscillation.
六味地黄制剂对糖尿病肾病大鼠肾功能的影响

糖尿病肾病（diabetic nephropathy，DN）是糖尿病的严重并发症和主要死亡原因。目前尚缺乏有效的防治DN的手段。如何有效地治疗DN，延缓肾脏功能减退的进程，是广大临床医师必须面对并急待解决的难题。本课题组通过观察六味地黄制剂对DN大鼠肾脏功能的影响，旨在阐释中医经典方药延缓和控制DN的作用机制。[第一段]
C~＋和Ti~＋注入铝型材热挤压模表面改性研究

应用MEVVA源离子注入技术，在氮化处理基础上对H13钢模具进行了C和Ti双重离子注入表面改性研究。结果表明，C和Ti双重离子注入可以显著提高H13钢的表面硬度和耐磨性，降低摩擦系数，从而大幅度提高模具的使用寿命和产品质量，使模具挤压产量由离子注入前的3．51t提高到9．86t，提高了近200％。[著者文摘]
正交试验优选那如-3凝胶剂的提取工艺研究

那如-3凝胶剂是由草乌、诃子、荜茇组成的新型蒙药制剂，具有祛寒、痛痹、除湿、通络的协同作用，用于治疗风湿病。那如-3传统剂型丸剂口服困难且毒性较大，具有一定的局限性，故拟将其剂型改为凝胶剂，本实验采用3种不同的方法提取有效成分，以草乌中生物碱和荜茇中胡椒碱作为指标优选出最佳提取方法并对其提取工艺条件进行了考察。[第一段]
毛囊闭锁三联症的诊断与治疗

毛囊闭锁三联症主要表现为聚合性痤疮、化脓性汗腺炎和头部脓肿性穿掘性毛囊周围炎。该病为常染色体显性遗传，具有独特的临床表现。治疗上常采用维A酸及对症处理。该文对毛囊闭锁三联症的病因、发病机制、临床表现、组织病理学特征、诊断、鉴别诊断和治疗作一系统性综述。[著者文摘]
葡萄酒中的多糖及其作用

介绍了葡萄酒中多糖的来源、多糖对葡萄酒酒石稳定性、蛋白质稳定性及感官质量等方面的影响,探讨了提高葡萄酒中多糖含量的工艺途径等.[著者文摘]
食品添加剂双乙酸钠的无溶剂合成新工艺研究

用醋酸、固体烧碱为原料,无溶剂法合成食品添加剂双乙酸钠.探索最佳工艺条件为：醋酸烧碱投料摩尔比2.05～2.15：1,反应时间2h,反应温度110～120℃.产品收率达到97%以上,质量符合联合国粮农组织（FAO）和世界卫生组织（WHO）双乙酸钠食品添加剂质量标准.[著者文摘]
风险与保障：基于农村养老问题的一个实证分析

在养老问题引起全社会关注和城镇养老保障日趋完善的今天，我国农村基本上还在依赖着传统的家庭养老与土地养老方式。实证研究却发现，相对于现实生活的压力和对疾病风险的担心来说，农民在自己的养老问题上并未像许多学者那样表现出强烈的忧虑。其原因可能在于农民的生活方式和养老保障传统，在于他们对国家和社会解决养老保障的极小预期，但更主要的原因还是相对于其他一些即期风险来说，养老风险是很多农民管不了的问题。这一结果可以解释我国农村养老保障制度的不合理与长期缺位，同时也能说明我国社会保障制度建设过程中已形成的一种对农民的社会排斥。[著者文摘]
天线阵列方位对MIMO无线信道性能的影响

分析收发天线阵列的方位对MIMO无线信道的空域相关性及其容量的影响，得出在散射信号角度扩展较小时，这种影响不容忽视，为得到更大的信道容量，应使阵列法线尽可能指向来波／去波平均方向。数值结果证实了天线阵列方位对相关系数的影响，并指出这种影响随天线阵列法线偏离其信号平均方向而增大。仿真结果表明信号角度扩展较小的阵列的方位对信道容量影响更大，增大信号角度扩展可以削弱以至消除这种影响。[著者文摘]
中小油脂加工企业电气系统设计

根据中小油脂加工企业生产特点和供电情况，帮助工程技术人员确定工厂供配电最优方案和各环节电气系统的设计，尤其是变压器、复合开关及隔离开关、自动空气开关，电机的各种控制方式，电缆、避雷与接地、电器设备的选择。
大型榨油机的设计

介绍了大型榨油机的设计特点。大型榨油机的设计运用了传统的机械螺旋压榨原理，采用先进的控制系统，能承受高负荷的硬齿面减速器，易损件采用特殊的加工工艺使耐磨度大大提高。实践证明，该机具有能耗低、产量大、压缩比大、操作简便等优点，值得油脂企业推广使用。
白叶枯病抗性基因Xa21、Xa4和Xa23的聚合及其效应分析

水稻自叶枯病（Xanthomonas oryzae pv．oryzae，Xoo）是由水稻黄单胞杆菌引起的细菌性病害，是世界水稻三大病害之一，常年给水稻生产造成不同程度的损失。水稻受害后，叶片枯萎，影响光合作用，千粒重降低，一般减产20％-30％。严重的可减产80％，甚至绝收。培育和种植抗病品种是从根本上控制白叶枯病的有效措施。但长期以来，我国利用的自叶枯病抗性基因单一，籼稻的抗源几乎都是Xa4。而粳稻的抗源集中在xa3，特别是杂交水稻的抗性更差。由于水稻对白叶枯病的抗性具有专化性，[第一段]
农村宅基地整理模式与方法研究--以武汉市新洲区为例

农村宅基地用地是一种重要的土地消费形式,对人类生存和社会的可持续发展都具有十分重要的意义.分析了新洲区农村宅基地的利用概况和利用方面存在的问题,进而论述了新洲区农村宅基地整理与利用的步骤、模式及方法.
不同浓度园试营养液配方对生菜生长的影响

以散叶生菜为试验材料,在自动化温室试验环境下,用5种不同浓度(50、100、150、200、300倍)的标准园试营养液进行栽培试验,观察其对生菜生长的影响.结果表明:在一定范围内(50～300倍),营养液浓度越高,生菜各产量因子(叶片数、叶长×叶宽、株高、株鲜重、根鲜重、株干重、根干重)数值呈不同程度增加.经显著性分析发现,各浓度处理间叶片数差异不显著,而叶长×叶宽、株高、株鲜重、根鲜重、株干重、根干重差异较显著.综合考虑,园试配方营养液浓度以150倍为最佳.
皖北地区设施栽培土壤酸化特征研究

测定了皖北地区典型设施土壤的pH值和交换性酸,研究了旱地改为菜园土后,土壤pH值和交换性酸含量变化,结果表明:普通农田改为菜园土后,土壤的酸化速度加快,在潮土上形成的菜园土10年左右变为酸性土壤,在砂姜黑土上形成的菜园土5年左右便开始酸化,种植蔬菜时间越长,土壤pH值下降越多.菜园土的酸化主要发生在耕作层,并产生一定数量的交换性酸.
头孢吡肟治疗中性粒细胞减少伴发热115例临床观察

感染是血液系统恶性疾病的首要并发症,尤其是在大剂量化疗后中性粒细胞缺乏的状态下,各种细菌感染的发生率及其耐药率之高已经严重影响了白血病的预后[1].如何选择有效的抗生素进行经验性治疗已引起了广泛的关注.本研究通过对头孢吡肟(马斯平)治疗恶性血液病患者中性粒细胞减少伴发热的疗效观察,旨在为化疗合并感染抗生素的合理选择提供有价值的经验.
秋延辣椒杂交制种栽培技术操作规程

利用多年制种经验,规范制种技术规程:选地轮作,严格隔离;2月中下旬适期播种,培育40～50 d的壮苗;地膜覆盖,保墒增产,4月下旬至5月上旬,适时定植;去杂保纯,选择重点放在始花节位、门椒形状,色泽、果肉厚度、风味等,凡不符合父本或母本品种特征特性的植株一律拔除;少干整枝:大果、中果型品种采用4～6干、6～8干整枝;加强管理,合理追肥;培训技工,去雄标记,专人采粉,适时授粉;铁环标记;预防为主,病虫早治;适时采种,晾晒入库.
早熟高糖甘蔗新品种粤糖89-240的选育

粤糖89-240系广州甘蔗糖业研究所从CP72-1210×桂糖73-167杂交组合后代中选育成的甘蔗新品种。该品种早熟高糖，萌芽快、齐，分蘖性好，宿根性较强；中至中大茎，实心，不易倒伏，老叶较容易脱壳；11月份蔗糖分达14％，较对照种粤糖63．237同期蔗糖分高近2个百分点，平均蔗糖分14．70％，平均蔗茎产量82．5t／hm^2，分别比对照种新台糖10号高0．23％(绝对值)、增产蔗17％；人工接种中抗黑穗病、抗嵌纹病；适宜粤西、粤北及广西、云南等中等或中等以上的旱坡地或水旱田种植。
不同激素配方对四倍体刺槐组织培养的影响分析

本试验分析研究了水解乳蛋白(LH)、蔗糖、BA、NAA和IBA等物质对四倍体刺槐嫩梢增殖倍数、嫩梢长度以及根诱导的影响。试验结果表明：增殖时，适宜的BA浓度为0.5mg／L，NAA浓度为0．05mg／L，蔗糖浓度为30g／L，增加LH有利于提高增殖倍数。NAA对诱导生根有很大作用，其适宜的浓度为0.5～1．0mg／L。
玉米6个产量性状与产量的灰色关联度分析

应用灰色关联度分析法，对玉米12个组合的6个主要数量性状与籽粒产量进行分析。结果表明：玉米单交种的产量与各产量性状关联度的大小顺序为：结实长>百粒重>穗位>株高>生育期>行数。目的是为高产玉米杂交种的选育提供科学依据。
植物化学诱变技术在育种中的运用及其进展——Ⅰ．化学诱变技术及诱变效率

综述了对植物化学诱变技术、突变体筛选技术、分子检测技术及其理论基础近年来的进展，并进行了较系统的阐述。化学诱变获得成功的关键是高效的诱变技术结合高效的突变体筛选技术，同时，帮助早期隐性突变发现的分子检测技术，作为辅助手段也是有利的。本文着重介绍了当代化学诱变技术、发生突变的机理、突变谱和诱变效率，并选择性地介绍了几种公认有效的突变剂的作用机理。
颈椎外伤前路手术早期并发症原因分析（附138例临床报告）

近年来，颈椎前路手术在颈椎外伤的治疗方面逐渐得到普及，由于颈前路解剖复杂，手术难度大，因此术中、术后各种并发症较常发生。我院自1992年1月至2004年1月，行前路手术的颈椎外伤患者共138例，发生早期并发症22例(30例次)，现报告如下。
The Thermodynamic and Dynamical Features of Double Front  Structures During 21-31 July 1998 in China

The daily 1°× 1° data of the Aviation （AVN） model, the black body temperature （TBB） data of cloud top, and cloud images by geostationary meteorological satellite （GMS） are used to identify a dew-point front near the periphery of the western Pacific subtropical high （WPSH）. The results clearly demonstrate the existence of the dew-point front, and its thermodynamic and dynamic structural characteristics are analyzed in detail. The dew-point front is a transitional belt between the moist southwest monsoon flow and the dry adiabatic sinking flow near the WPSH, manifested by a large horizontal moisture gradient in the mid-lower troposphere and conjugated with the mei-yu front to form a predominant double-front structure associated with intense rainfall in the mei-yu period. The mei-yu front is located between 30° and 35°N, vertically extends from the ground level to the upper level and shifts northward. The dew-point front is to the south of the mei-yu front and lies up against the periphery of the WPSH. Generally, it is located between 850 hPa and 500 hPa. On the dew-point front side, the southwesterly prevails at the lower level and the northeasterly at the upper level; this wind distribution is different from that on the mei-yu front side. Vertical ascending motion exists between the two fronts, and there are descending motions on the north side of the mei~yu front and on the south side of the dew-point front~ which form a secondary circulation. The dynamics of the double fronts also have some interesting features. At the lower level, positive vertical vorticity and obvious convergence between the two fronts are clearly identified. At the mid-lower level, negative local change of the divergence （corresponding to increasing convergence） is often embedded in the two fronts or against the mei-yu front. Most cloud clusters occur between the two fronts and propagate down stream in a wave-like manner.
足部皮瓣在拇指及手指再造与修复中的应用

自从张涤生等[1](1979)采用带足背皮瓣的第二趾移植一期完成拇指再造以来,把原需多次手术合并成一次手术完成,减少多次手术的痛苦和经济负担;Morrison等[2](1980)对拇指皮肤撕脱伤采用踇趾甲皮瓣移植修复,获得良好的外形,又不缺失足趾,为这类病例的再造带来了理想的再造方法;Founche等[3](1980)选用踇趾趾腹皮瓣修复拇指指腹缺损,这些给我们以极大的启示.Khouri等[4](1992)及侯瑞兴等[5](1998)对手指皮肤撕脱伤的患者采用第二趾甲皮瓣移植修复,也获得良好的外形与功能.随着显微外科技术的发展和足趾组织移植拇、手指再造与修复在临床应用的拓宽,我们根据患者不同伤情在足部设计不同的皮瓣,对拇、手指及组织缺损进行修复与重建,获得了良好的临床效果[6-8].
siRNA, miRNA and HIV: promises and challenges

Small interfering RNA (siRNA) and microRNA (miRNA) are small RNAs of 18-25 nucleotides (nt) in length that play important roles in regulating gene expression. They are incorporated into an RNA-induced silencing complex (RISC) and serve as guides for silencing their corresponding target mRNAs based on complementary base-pairing. The promise of gene silencing has led many researchers to consider siRNA as an anti-viral tool. However, in long-term settings, many viruses appear to escape from this therapeutical strategy. An example of this may be seen in the case of human immunodeficiency virus type-1 (HIV-1) which is able to evade RNA silencing by either mutating the siRNA-targeted sequence or by encoding for a partial suppressor of RNAi (RNA interference). On the other hand, because miRNA targeting does not require absolute complementarity of base-pairing, mutational escape by viruses from miRNA-specified silencing may be more difficult to achieve. In this review, we discuss stratagems used by various viruses to avoid the cells' antiviral si/mi-RNA defenses and notions of how viruses might control and regulate host cell genes by encoding viral miRNAs (vmiRNAs).
Influence of the Ionosphere on the Observation of the Mid-Latitude Pi2 Pulsations at the Global Scale

Results of our investigation showed that occurrence frequency of Pi2 over a 24 hour period undergoes seasonal variations in time coincidence with foF2. In the winter months, at sunrise and sunset (when foF2gradients are the largest) the observation probability of these oscillations is minimal. At periods of summer solstice when the F2-layer persists almost round the clock, no effect of Pi2 pulsation attenuation is observed at sunrise and sunset. The pulsation amplitudes behave in a similar manner. Results of this study suggest the conclusion that the propagation of signal from the Pi2 sourse into the mid-latitudes, and also the parameters of these pulsations are essentially affected by electron density in the ionospheric F2-layer.
Microwave Brightness Temperature and Lunar Son Dielectric Property Retrieve

Among many scientific objectives of lunar exploration, investigations on lunar soil become more and more attractive to the scientists duo to the existence of abundant 3He and ilmenite in the lunar soil and their possible utilization. Although the soil composition determination on the lunar surface is available by visible light spectrometer, γ/X-ray spectrometer etc, the evaluations on the total reserves of 3He and ilmenite in the lunar deep and on the thickness of the lunar soil are still impossible so far. In this paper, the authors first give a rough analysis of the microwave brightness temperature images of the lunar disc observed using the NRAO 12 Meter Telescope and Siberian Solar Radio Telescope; then introduce our researches on the microwave dielectric properties of lunar soil simulators; finally, discuss some basic relations between the microwave brightness temperature and lunar soil properties.
Determination of Vapor Pressures for Binary and Ternary Mixtures Containing Ionic Liquid 1-propy1- 3-methylimidazolium Bromide

Vapor pressure values of binary systems water ＋ ethanol, water ＋ ionic liquid 1-propyl-3- methylimidazolium bromide （[PMIM] [Br]）, ethanol ＋ [PMIM] [Br] and ternary system water ＋ ethanol ＋ [PMIM] [Br] at different temperatures were measured by using a modified boiling point method in various concentrations of （16.66%, 33.7%）, （17.4%, 33.9%） and （16.5%, 32%） mass percent of ionic liquid, respectively. The experimental vapor pressures of solvent were well correlated by the Antoine-type equation, and the overall average absolute deviation （AAD） was found to be 0.39%. The experimental results for mixtures containing ionic liquid indicate that the vapor pressure of the solvents can be decreased noticeably to different extent due to the affinity difference between ionic liquid and solvent, which is similar to the salt effect of common inorganic salts. As a result, ionic liquid may find industrial applications in extractive distillations for the system with a low separation factor or even for an azeotropic mixture.
促红细胞生成素对大鼠急性脊髓损伤神经保护机制的研究

促红细胞生成索（erythropoietin，EPO）过去一直被认为是调节红细胞生成的糖赁白，主要产生于胎儿肝脏和成人的肾脏，刺激骨髓的造血于细胞向红细胞分化。但最近研究表明，EPO是一种多功能霄养因子及神经保护因子，具有调节中枢神经系统发育、神经营养及神经保护作用，能保护大脑在缺血、缺氧和神经系统变性疾病的神经元损伤，是一个新的有发展前景的神经保护剂。
Calmodulin regulates the post-anaphase reposition of centrioles during cytokinesis 

A transient postanaphase repositioning of the centriole is found to control the completion of cytokinesis. Using a green fluorescent protein-calmodulin fusion protein as a living cell probe, we have previously found that calmodulin is associated with the initiation and progression of cytokinesis. In this study, we further studied the effect of calmodulin on the repositioning of the centriole and subsequent cell cycle progression. When activity of calmodulin is inhibited, the regression of the centriole from the intercellular bridge to the cell center is blocked, and thus the completion of cell division is repressed and two daughter cells are linked by longer cell bridge in perturbed cells. W7 treatment during cytokinesis also results in unfinished cytokinesis and stopped G1 phase. These results suggest that calmodulin activity is required for centriole repositioning and can affect the completion of cytokinesis and cell cycle progression.
Ultrastructure and histochemistry of rat myocardial capillary endothelial cells in response to diabetes and hypertension

Insufficient growth and rarefaction of capillaries, followed by endothelial dysfunction may represent one of the most critical mechanisms involved in heart damage. In this study we examined histochemical and ultrastructural changes in myocardial capillary endothelium in two models of heart failure streptozotocin-induced diabetes mellitus (STZ) and NO-deficient hypertension in male Wistar rats. Diabetes was induced by a single i.v. dose of STZ (45 mg/kg) and chronic 9-week stage was analysed. To induce NO-deficient hypertension, animals were treated with inhibitor of NO synthase L-nitroarginine methylester (L-NAME) (40 mg/kg) for 4 weeks. Left ventricular tissue was processed for enzyme catalytic histochemistry of capillary alkaline phosphatase (AlPh), dipeptidyl peptidase IV (DPP IV), and endothelial NO synthase/NADPH-diaphorase (NOS) and for ultrastructural analysis. In diabetic and hypertensive rats, lower/absent AlPh and DPP IV activities were found in focal micro-areas. NOS activity was significantly reduced and persisted only locally. Quantitative evaluation demonstrated reduction of reaction product intensity of AlPh, DPP and NOS by 49.50%, 74.36%, 20.05% in diabetic and 62.93%, 82.71%, 37.65% in hypertensive rats. Subcellular alterations of endothelial cells were found in heart of both groups suggesting injury of capillary function as well as compensatory processes. Endothelial injury was more significant in diabetic animals, in contrast the adaptation was more evident in hypertensive ones. Concluding: both STZ-induced diabetes- and NO-deficient hypertension-related cardiomyopathy were accompanied by similar features of structural remodelling of cardiac capillary network manifested as angiogenesis and angiopathy. The latter was however, predominant and may accelerate disappearance of capillary endothelium contributing to myocardial dysfunction.
Preparation of Multicomponent Schr?dinger Cat States Through Resonant Atom-Field Interaction

A simple method is presented for generating multicomponent Schr?dinger cat states through resonant atom-field interactions. In the scheme n two-level atoms, initially in ground states, are sent through a resonant cavity filled with a strong coherent field sequentially. Then state-selective measurements are performed on the atoms. The detections of the atoms in ground states collapse the cavity field onto a superposition of 2n coherent states. This is the first way for producing superpositions of many coherent states through resonant atom-field interaction.
第2届南方电网技术论坛主旨报告荟萃

[编者按]中国南方电网有限责任公司科技工作会议暨第二届南方电网技术论坛于2005年10月11日至12日在广州成功举行.大会邀请了有关专家作论坛主旨报告,内容涉及大电网的协调控制、灾变防御体系、安全评估策略、特高压技术和设备等,对中国拟构建的特高压电网研究有一定的参考价值.<南方电网技术研究>将其编辑成论坛主旨报告荟萃,发表于2005年第6期.本刊特转载该文,以飨读者.
急性重度有机磷农药中毒32例的救治

0引言在急性重度有机磷农药中毒(AOPP)救治过程中,早期的内科常规处理,结合抗胆碱药及复能剂的应用,并积极进行肠道水疗,血液灌流,后期营养支持等综合救治,能提高AOPP在基层医院的抢救成功率、存活率.我院2000-3/2005-03收治32例重度AOPP患者,获得满意治疗效果.
体外循环下切除累及右肺动脉根部左心房及上腔静脉的肺癌1例

病人 男，55岁。咳嗽1个月。CT见肿瘤位于右肺上叶，已侵及右肺动脉根部。常规心包内处理肺动脉困难，且肿瘤与左心房及上腔静脉较密切（图1-3）。纤维支气管镜取病理证实为鳞癌，骨扫描等未见远处转移征象。考虑先行化疗可能增加组织脆性，手术风险增大或失去手术机会，且病人强烈要求手术，经讨论准备手术探查，做好体外循环准备.
吞服大量金属汞异物两例

例1 患者女，50岁，农民。2004年3月26日上午9时许吞服金属汞约3500g，同时服白酒150g。11时被送至医院，用牛乳洗胃，洗出汞1500g。患者感腹部坠胀不适转我院，无恶心、呕吐及腹泻。既往患者于家中间歇以汞齐法炼金2～3年。体检：体温、心率、呼吸、血压均正常，意识清，牙龈无汞线，齿龈无肿胀，口腔黏膜无溃疡。心肺未见异常。腹软，无明显压痛，肝、脾肋下未及，肠鸣音约3次／min。卧位下三颤试验（-）。血常规、尿常规、肝功能、肾功能、血生化均正常，大便潜血（-），空白尿汞0．042mg／L，X线胸片、心电图无异常。诊断：吞服金属汞异物、汞中毒观察.
刺激性接触性皮炎的研究进展

接触性皮炎(contact dermatitis,CD)是指接触外源化合物而导致的皮肤炎性疾患,根据发病机制的不同通常将其分为刺激性接触性皮炎(irritant contact dermatitis,ICD)和变应性接触性皮炎(allergic contact dermatitis,ACD)[1].ICD是一种不产生特异性抗体的皮肤炎症,而ACD属于T细胞介导的Ⅳ型超敏反应,需要预先致敏才能发生.另外,ICD形态变化广泛,在急性期主要表现为皮肤红斑、水肿、脱屑和角质形成细胞囊泡化样变,在慢性期主要表现为皮肤裂隙、苔藓化和角化过度.由于这些变化都是非特异性表现,使得ICD通常很难与ACD以及内源性皮炎相区别
基于延拓法的电力系统稳定模型中二维参数局部分岔边界的计算

该文提出表示微分．代数模型中的奇异性、鞍结点和霍普夫分岔的代数方程以便应用延拓法来求解获得二维参数的分岔边界。该方程保留了电力系统稳定微分．代数模型的形式不变，也未涉及到矩阵求逆或行列式值的计算，同时该方程也具有直接法计算分岔时速度快的优点。其缺点是方程的维数增加了。应用所提方法计算了一简单电压稳定和一多机电力系统稳定模型中的二维参数局部分岔边界，并和实域仿真进行比较，结果表明该方法是准确可行的。Based on two numerical methods used in bifurcation analysis, this paper proposed a set of algebraic equations that could be solved by continuation method to calculate two-dimensional singularity induced, saddle-node and Hopf bifurcations boundary in differential- algebraic equations (DAE). These algebraic equations keep the form of power system stability DAE model unchanged, also they need neither to inverse matrix nor compute the determinant, in the meantime they have the same advantage of rapid convergent speed as the direct method. The drawback is that their dimension is increased.. The method was applied in a .simple voltage stability power system and a multi-machine power system to calculate their two-dimensional parameter local bifurcation boundary The results are checked with those obtained by time domain simulation method to illustrate its capability and accuracy.
慢性乙型肝炎患者拉米夫定停药后疗效持久性的观察

为提高拉米夫定的治疗效果,减少停药后的病情复发,我国拉米夫定临床应用专家组修订发表了<2004年拉米夫定临床应用专家共识>[1],继续对拉米夫定的疗程进行了规定.我们对88例应用拉米夫定的慢性乙型肝炎(慢乙肝)患者进行了停药后疗效持久性的初步观察,报告如下.
中国北方地区乙型肝炎病毒基因型分布的临床意

近年发现,根据HBV DNA-S区的碱基不同,HBV的基因型可分为A～H 8个基因型,不同基因型在各地区的感染率各异,感染后临床表现及对药物治疗反应有区别,为深化研究乙型肝炎的流行、预防和治疗特点,对我院收治的北方地区慢性HBV感染者进行了HBV DNA基因型检测,结合被检测者的临床情况作简要分析,发现其中一些规律,报告如下.
我国HIV-1 B'亚型毒株GAG蛋白抗原表位变异研究

在HIV-1感染者体内针对病毒病原体产生特异性免疫应答的过程中,病毒自身所携带的抗原表位是机体免疫系统直接作用的靶点,对激活机体免疫应答起着至关重要的作用.但HIV的抗原表位不是一成不变的,而是在宿主免疫压力下不断地发生着各种各样的变化,这种变化正是HIV-1病毒逃避机体免疫监视的重要机制之一.我们试从抗原表位的角度对我国HIV-1 B'亚型毒株gag基因的变异进行分析,以期获得的抗原表位变化的数据资料可以为我国HIV-1 B'亚型疫苗的研制提供指导.
先天性双腔右心室彩色多普勒超声心动图分析

先天性双腔右心室（DCRV）是一种较少见的先天性心脏畸形，又称右室腔梗阻或右室异常肌束性狭窄．其血流动力学改变类似于漏斗部狭窄或肺动脉瓣狭窄，且常合并其他心脏畸形，较少单独存在，其临床症状又多与所合并的畸形类似，故容易被漏诊或误诊。笔者总结了本院19例经手术证实为DCRV患儿的彩色多普勒超声心动图特点，报告如下。
骨伤愈合仪配合活血安痛酊治疗膝骨关节炎的临床观察和护理方法

膝骨性关节炎（knee osteoarthritis，KOA）是临床上常见的骨科疾病，其主要症状为膝关节疼痛，无力，活动受限，严重者出现皓形，对患者的工作、生活带来极大的影响。我科自2002年5月至2005年5月采用电脑骨伤愈合仪（豪华型，长沙天任企业集团研制生产）配合活血安痛酊离子导入治疗膝关节骨关节炎66例，通过对比临床观察和专项护理方法，疗效满意，现报告如下。
内源性硫化氢在心血管疾病中的作用

硫化氢（H2S）作为一种有毒气体，人类认识和研究其作用已有300多年历史。直到上世纪90年代中期，人们发现包括人类在内的哺乳动物可代谢生成气体分子H2S，对神经系统特别是海马的功能具有调节作用，并可以调节消化道和血管平滑肌的张力，而其作用特点有别于另外两种气体信号分子NO及CO。最近研究证实，内源性H2S直接作用于KATP，通道实现对血管的调节作用；
热能辅助型太阳能箱式干燥器的设计与试验

基于我国农村对农副产品干燥设备的需求现状，设计了一种热能辅助型太阳能箱式干燥器。该装置由干燥箱、热风炉和循环系统构成。采用中空阳光板作为盖板，物料筛底部为带蜂窝的整体槽形风箱，进风口设有冷，热风调节阀，有效地控制了风量、物料受风及干燥的均匀度。对香菇的干燥试验表明，其干燥品质和效率均高于同类干燥器。
醋柳黄酮滴丸溶出度研究

醋柳黄酮系从沙棘中提取加工的有效部位,其中主要包括异鼠李素和槲皮素及其苷.醋柳黄酮制剂主要用于心气虚弱,心脉瘀阻,痰湿困脾所致心慌、心悸、心痛、气短胸闷、血脉不畅及咳累等症。[第一段]
道路对景观的影响及其生态风险评价——以澜沧江流域为例

道路贯穿于各类景观。道路网络的发展也产生了许多生态效应。道路的生态风险分析是基于生态效应，通过格局和过程的研究，综合评估各类潜在生态影响及其累积性后果。从景观生态学理论入手．分析了道路对景观的影响，将道路对景观的影响区分为建设期和运营期2个阶段，并提出了基于格局和过程的生态环境指数，进而得出道路综合生态风险评价的方法。以澜沧江流域上中下游的3个典型区为例，研究道路对景观的影响。结果表明，虽然不同案例区道路影响的景观类型和格局不同，其风险的分布也不同．但综合风险指数和道路密度具有很高的一致性。[著者文摘]Road and road networks bring forth many ecological effects, as they run through all kinds of landscapes, while road ecological risk analysis is to comprehensively assess various potential ecological effects and their accumula-tive effects trough pattern and process research. Focused on the impact of roads on landscape, the road effects were divided into construction period and passage period, with two indexes based on different effects on pat-tern and process to describe the effects put forward and the comprehensive ecological risk index deduced. Tak-ing three case areas at upper, middle, and lower reaches of Lancanjiang River valley as examples, this paper an-alyzed that the road impact on landscape, and calculated their ecological risk index. The results indicated that though ecological risk distributed differently in each area, road density had high positive linear correlations with risk indexes.