mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
杂交粳稻及其亲本抗倒伏的材料学特性研究

对11个杂交粳稻的品系或组合与其相应的12个亲本测定了茎秆的材料学特性,并用DPS分析软件对其相关性进行了分析.结果表明:杂交粳稻品种间和其亲本品种间在材料学特性方面的差异很大.基节弯矩M都对倒伏指数有负向的影响,但是提高M值的途径并不相同.杂交粳稻品种中,增加茎秆的硬度比增加茎秆构成材料更有效;而在亲本品种中则相反.相关性上分析,杂交粳稻中,株高与倒伏指数间存在着显著的正相关关系,但在亲本中并不显著.而秆型指数与其相关性在亲本中达到了显著水平.本试验进一步说明,在杂交粳稻和其亲本中,通过提高茎秆构成材料的质量和数量因素来保持甚至提高植株的抗倒伏能力是可能的.
农业生物节水研究进展

生物节水是未来节水农业的研究重点,节水指标的筛选和耐旱节水高产优质品种的培育对提高水分利用效率和发展优质高效农业具有重要意义.从水分利用效率、作物抗旱节水的生理生化指标和基因工程的应用等方面综述了生物节水技术的研究进展,并讨论了一些指标的利弊,同时提出了未来在节水农业方面需要重点开展的研究工作.
Identification and characterization of glnA promoter and its corresponding trans-regulatory protein GlnR in the rifamycin SV producing actinomycete, Amycolatopsis mediterranei U32

The genetic requirements for the transcription of glnA, encoding the major glutamine synthetase in a rifamycin SV-producing Amycolatopsis mediterranei strain, U32, were investigated. Primer extension experiments showed that the promoter of U32 glnA (pglnA) was likely to have two transcription initiation sites: P1 and P2, located 157 and 45 nucleotides (nt) upstream of the translational start codon, respectively. Gel mobility shift and DNase I footprinting analyses revealed a 30 bp cis-element located at 45 to 75 nt downstream of P1, or 38 to 68 nt upstream of P2. The sequence of the cis-element displayed high similarity to the corresponding regions of pglnA from Streptomyces coelicolor and S. roseosporus. With xylE as a reporter gene, the expression levels of U32 pglnA and its deletion derivatives under different nitrogen-source conditions were analyzed by detecting the catechol dioxygenase activities in S. lividans TK54, S. coelicolor J508 and S. coelicolor FS10 (glnR mutant). These in vivo studies showed that the activation of U32 pglnA in S. coelicolor required GlnR, and the binding of which to the U32 pglnA was further physically confirmed by the gel mobility shift assay. Cloning and heterologous expression of the U32 glnR allowed us to detect the in vitro interaction between the U32 GlnR and the corresponding pglnA cis-element. Further evidence shown by in vivo glnR inactivation and complementation indicated that GlnR is essential for the active transcription of glnA in U32.
Bone Marrow Stromal Cells Express Neural Phenotypes in vitro and Migrate in Brain After Transplantation in vivo

Objective To investigate the differentiation of bone marrow stromal cells (BMSC) into neuron-like cells and to explore their potential use for neural transplantation. Methods BMSC from rats and adult humans were cultured in serum-containing media. Salvia miltiorrhiza was used to induce human BMSC (hBMSC) to differentiate. BMSC were identified with immunocytochemistry. Semi-quantitative RT-PCR was used to examine mRNA expression of neurofilamentl (NF1), nestin and neuron-specific enolase (NSE) in rat BMSC (rBMSC). Rat BMSC labelled by Hoschst33258 were transplanted into striatum of rats to trace migration and distribution. Results BMSC expressed NSE, NF1 and nestin mRNA, and NF1 mRNA and expression was increased with induction of Salvia miltiorrhiza. A small number of hBMSC were stained by anti-nestin, anti-GFAP and anti-S100. Salvia miltiorrhiza could induce hBMSC to differentiate into neuron-like cells.Some differentiated neuron-like cells, that expressed NSE, beta-tubulin and NF-200, showed typical neuron morphology, but some neuron-like cells also expressed alpha smooth muscle protein, making their neuron identification complicated. rBMSC could migrate and adapted in the host brains after being transplanted. Conclusion Bone marrow stromal cells could express phenotypes of neurons, and Salvia miltiorrhiza could induce hBMSC to differentiate into neuron-like cells. If BMSC could be converted into neurons instead of mesenchymal derivatives, they would be an abundant and accessible cellular source to treat a variety of neurological diseases.
Monitoring and fault diagnosis for batch process based on feature extract in Fisher subspace

Multivariate statistical process control methods have been widely used in biochemical industries. Batch process is usually monitored by the method of multi-way principal component analysis (MPCA). In this article, a new batch process monitoring and fault diagnosis method based on feature extract in Fisher subspace is proposed. The feature vector and the feature direction are extracted by projecting the high-dimension process data onto the low-dimension Fisher space. The similarity of feature vector between the current and the reference batch is calculated for on-line process monitoring and the contribution plot of weights in feature direction is calculated for fault diagnosis. The approach overcomes the need for estimating or filling in the unknown portion of the process variables trajectories from the current time to the end of the batch. Simulation results on the benchmark model of penicillin fermentation process can demonstrate that in comparison to the MPCA method, the proposed method is more accurate and efficient for process monitoring and fault diagnosis.
Synthesis, Structure Characterization, and Cu~(2+) Recognition of 3-{[3-(Phenylsulfonamido)benzoyl]methylidene}-3,4-dihydroquinoxaline-2(1H)-one

Aryl diketo acid derivatives are one of the most promising HIV-1 integrase(IN) inhibitors. With a view to substitute the critical diketo acid pharmacophore with the diketo benzimidazole unit, the coupling reaction of compound 4 with o-phenylenediamine was carried out. However, the reaction product, compound 5, was confirmed to be 3-{[3-(phenylsulfonamido)benzoyl]methylidene}-3,4-dihydroquinoxaline-2(1H)-one rather than the 2-benzimidazole derivative by using X-ray diffraction. Owing to its low solubility in water, the evaluation of the anti-HIV IN activity of the synthesized compound 5 could not be carried out. Consequently, the ion-binding properties of compound 5 in the absence of HIV-1 IN were investigated with UV-Vis spectroscopy in organic solvents. The results show that such a compound can selectively recognize Cu~(2+).
Energy Transformation in Mammalian Cell for Low Energy Ion Beam Impinging

This study investigates the stopping power of a mammalian cell for low energy ions. The energy equation of the incident ion has been conducted based on the elastic collision between the pairs of nuclei in order to establish the stopping powers of the mammalian cell for low energy ion implantation. Based on the biological structure of the mammalian cell and the measured thickness of the V79 cell, a physical structural model is proposed that the attached cell is approximately of a model of a constringent multi-membrane structure (C-2M model) in order to analyse the stopping power of the mammalian cell for low energy ions. With this model we have determined the mean line energy transfer, and roughly estimated the depth of ion implantation on the selected Chinese hamster V79 cell for 30 keV N~+ ions at a flux of 1 * 10~(15) ion/cm~2, which is in agreement with those by using Monte Carlo methods.
Construction of eukaryotic expression vector for human CCL21 and characterization of its chemotactic activity

Objective To obtain recombinant human CCL21 with biological activity from eukaryotic expression system for further use in cancer gene therapy. Methods A fragment of human CCL21 gene was obtained from pSK-hCCL21 plasmid digested by Xho I and BamH I, inserted into the responding sites of eukaryotic expression vector pVAX1, and then transfected into COS-7 cells by electroporation method. The expression of hCCL21 protein was detected by western blotting analysis. The in vitro chemotaxis assay was used to test the chemotactic function of the expression product to lymphocytes. Results Human CCL21 protein was expressed by transfected COS-7 cells with recombinant plasmid containing hCCL21 gene, and was verified by western blotting. The in vitro chemotaxis assay demonstrated that human CCL21 protein had a potent chemotactic function to lymphocytes. Conclusion Human CCL21 was successfully and transiently expressed in eukaryotic cells, which lays some foundation for the study of CCL21 gene therapy in murine tumor models.
Hydrothermal Synthesis and Thermal Stability of Natural Mineral Lindgrenite

A natural mineral, lindgrenite Cu_3(MoO_4)_2(OH)_2, was synthesized from a mixture of sodium molybdate, copper sulfate, and morpholine in water under autogenous pressure at 170 ℃. The crystal structure of the mineral was determined and the final refinement for 791 observed reflections with I>2σ(I) gave R1=0.0205 and wR2=0.0496. The thermal stability of the mineral was investigated by using TG-DTA and variable-temperature in situ X-ray diffraction(XRD) techniques. The crystalline Cu_3Mo_2O_9 was obtained when the mineral underwent thermal dehydration at a temperature ranging from 300 to 400 ℃, and the mixture of MoO_3 and CuO was formed through decomposition of Cu_3Mo_2O_9 at a temperature ranging from 650 to 700 ℃. Therefore, the structure of the mineral was thermally unstable at above 300 ℃, suggesting that Lindgrenite was likely formed via the hydrothermal route occurring in the nature.
Preparation and Luminescence Behavior of CaSiO_3∶Eu~(3+)(Bi~(3+))

CaSiO_3:Eu_(0.08)~(3+)Bi_(0.002)~(3+) with a monoclinic perovskite structure was synthesized by using sol-gel method, and its luminescence characteristics were investigated. From the excitation spectrum, it can be seen that the main peaks located at 238, 396, 415, 437 and 359 nm correspond to the charge-transfer band of Eu~(3+)—O~(2-), the absorption transitions of ~7F_(0,1)→~5L_6, ~7F_0→~5D_3, ~7F_1→~5D_3 of Eu~(3+) ions, and ~3P_1→~1S_0 of Bi~(3+) ions, respectively. When the samples were excited with a light of wavelength 359 or 395 nm, it can be seen from the emission spectrum that the electronic dipole transition located at 609 nm corresponding to ~5D_0→~7F_2 of Eu~(3+) ions was stronger than the magnetic dipole transition located at 587 nm corresponding to ~5D_0→~7F_1 of Eu~(3+) ions, which shows that more Eu~(3+) ions were located in nonreversion center lattices. The energy transfer from Bi~(3+) ions to Eu~(3+) ions in the phosphor was also discussed. The results show that Eu3+ ions could be well sensitized by Bi~(3+) ions, and the energy-transfer pattern between Bi~(3+) ions and Eu~(3+) ions was resonance energy transfer.
The first order phase-transition of polycrystal solid surfaces with nanothickness

The fundamental equations of thermodynamics of a film have been used for describing a fundamental property of solid crystalline materials i.e. the first-order phase transition on the grain boundaries by the formation of two-dimensional liquid. The generalized equation that is obtained is used for calculating the premelting temperature of any metal, which has a value in the range of 0.55–0.86 of the melting point. The experimental diffusion coefficient of nitrogen in steel at premelting temperature is the same as in the liquid phase. The described phenomenon of phase transition on the grain boundaries decreases in case of radical modification of the existing process engineering of handling metals. It also provides a precise physical explanation to the super plasticity of fine-structure metal alloys.
AUTO-EXTRACTING TECHNIQUE OF DYNAMIC CHAOS FEATURES FOR NONLINEAR TIME SERIES

The main purpose of nonlinear time series analysis is based on the rebuilding theory of phase space, and to study how to transform the response signal to rebuilt phase space in order to extract dynamic feature information, and to provide effective approach for nonlinear signal analysis and fault diagnosis of nonlinear dynamic system. Now, it has already formed an important offset of nonlinear science. But, traditional method cannot extract chaos features automatically, and it needs man's participation in the whole process. A new method is put forward, which can implement auto-extracting of chaos features for nonlinear time series. Firstly, to confirm time delay τ by autocorrelation method; Secondly, to compute embedded dimension m and correlation dimension D; Thirdly, to compute the maximum Lyapunov index λmax; Finally, to calculate the chaos degree Dch of features extracting has important meaning to fault diagnosis of nonlinear system based on nonlinear chaos features. Examples show validity of the proposed method.
APPLICATION OF INTEGRATION ALGORITHEMS FOR ELASTO-PLASTICITY CONSTITUTIVE MODEL FOR ANISOTROPIC SHEET MATERIALS

Two algorithms of computing stress increment by using the elasto-plasticity constitutive model are firstly formulated, which are the Euler integration method and the radial return method.Hill'48 anisotropic yield criterion is used. The Euler integration method can not obtain more accurate computation of the stress increment as the radial return method unless enough subintervals are taken,by which the Euler integration method will take excessive computing time. Without decreasing any accuracy, the radial return method can save much time. Finally, a square cup deep drawing from NUMISHEET'93 benchmarks is simulated with a self-developed code SheetForm in order to investigate the accuracy and efficiency of the radial return method.
LiMn_2O_4 thin films derived by rapid thermal annealing and their performance as cathode materials for Li ion battery

The LiMn_2O_4 thin film as a cathode material was prepared through solution deposition followed by rapid thermal annealing (RTA). The phase identification and the study of surface morphology were carried out by X-ray diffraction and scanning electron microscopy. Electrochemical properties were examined by cyclic voltammetry, galvanostatic charge-discharge experiments, and electrochemical impedance spectroscopy. The results show that the film prepared by this method is homogeneous, dense, and crack-free. The thin film has a capacity of 38 μAh/(cm~2·μm) with the capacity loss of 0.037% per cycle after being cycled for 100 times. The average diffusion coefficient for lithium ions in the RTA-derived LiMn2O4 thin film is 1 × 10~(-10) cm2·s~(-1).
近十几年新疆水汽源地变化特征

提出确定新疆水汽源地的原则和步骤，用ERA-40再分析资料计算了新疆至大西洋沿岸对流层4个季节典型月份的定常水汽输送场，结合大气可降水量分析了气候意义上新疆的主要水汽源地及近十几年的变化.研究结果表明新疆的水汽主要来自其以西的湖泊或海洋，1，4月的水汽源地是里海和地中海；7月是北大西洋和北冰洋；10月是黑海和里海.再分析资料和观测资料分析都发现，1987年后随着全球增暖，7月和1月中高纬度行星尺度大气的水汽含量增加，地中海所在纬度带减少；新疆上空的水汽更多地直接来自于较高纬度带，来自地中海所在纬度带的水汽输送减少了.
由Langevin方程引出的一类广义M-J集

分析了一典型Langevin问题，即在双势阱和变化的磁场中并受若干个简单冲量函数循环作用的运动带电粒子的动力学．利用频闪采样法，选取适当的磁场强度和时间间隔，将描述粒子速度变化规律的Langevin方程规约为一类简单复映射系．利用实验数学的方法，研究了该复映射系的广义M-J（Mandelbrot-Julia）集的分形结构，并基于广义M-J集的结构特征阐述了Brown运动规律．研究表明：（1） 对广义M-J集分形结构的研究是对Shirriff的由两个简单复映射的组合构造M集工作的推广；（2） 广义M-J集的结构特征可形象地刻画出Brown运动的规律，广义M-J集的无穷嵌套自相似几何结构反映了Brown运动的复杂性；（3） 选取的时间间隔有、无意义，决定了广义M-J集分形结构的连续性；（4） 粒子速度的变化规律依赖于相角主值范围的不同选取；（5） 若改变磁场强度和时间间隔的选取，如选取一随机波动的磁场，则此时广义J集可能会出现内部被填充的结构特征，即在速度空间中粒子的不稳定周期轨道的闭包出现“爆炸”现象．
合采井储气分层产能测试及动态监测天然气烃指纹色谱方法——以松辽盆地北部徐家围子断陷徐深1井为例

提出并确立了合采井储气分层产能贡献的天然气烃指纹色谱测试理论和测试及模拟计算方法，并在松辽盆地北部徐家围子断陷的徐深1井进行了试验验证.将由徐深1井获得的储气分层天然气样品，利用天然气烃指纹色谱方法检测，通过选择特征烃指纹参数来表征各储气分层及天然气；将合采的3个储气分层天然气样品按一定模式混合配比，得到特征烃指纹与不同贡献率之间的对应关系，即建立烃指纹模型参数，用非线性神经网络学习算法训练建立测试模板；再经过测试模板的回归计算、实验室校验及现场测试结果对比的可靠性验证，完成了徐深1井合采天然气3个储气分层产能贡献的定量测试.与分层试气结果对比的绝对误差最大为6%，验证了合采井天然气储气分层产能测试烃指纹色谱方法的有效性，为解决制约天然气勘探及开发生产中储气分层产能评价测试及动态监测的技术瓶颈提供了有效途径.
穴位注射气管炎菌苗治疗梅核气20例

本组20例均来自我院门诊,其中男4例,女16例;年龄最小21岁,最大52岁;病程最短3年,最长12年.20例患者均表现为咽中有异物感,或咽中梗阻,吞之不下,吐之不出,但饮食无障碍,胸胀满,情绪抑郁,多愁善感.就诊前均经过中西药物、针灸长期治疗效果不明显而来本科治疗.
赫赛汀联合泰素帝治疗炎性乳腺癌1例报告

患者,女,49岁,已婚,发现右侧乳房红肿疼痛20 d.查体:T 36.5 ℃,P 70次/min,R 18次/min,双乳不对称,右乳明显肿大,外上、内上象限皮肤中度水肿,皮下散在红色点状物,右乳头下方及外上象限分别触及2.0 cm×1.5 cm×1.0 cm及2.0 cm×1.5 cm×1.5 cm的包块,腋下可触及多个肿大淋巴结.
免疫层析法检测鼠疫菌的敏感性试验

鼠疫抗原胶体金免疫层析法(RGICA)是集中了免疫与层析色谱的特点,使待测样品中的鼠疫FI抗原与吸水纤维上的金标FI单抗不断结合,形成FI-金标FI单抗复合物,再由层析作用,持续通过硝酸纤维素膜,与膜上固相另一株FI单抗结合,该法操作简便、快速、方便携带适用于野外监测快速诊断,为了尽快使胶体金免疫层析法快速诊断应用于鼠疫现场,我们针对不同样本进行了实验室敏感性等试验,这些试验的完成,使RGICA法尽快为鼠疫现场的快速诊断提供依据.
CS3000DCS控制系统在PTA装置的应用

随着计算机技术的不断发展,DCS控制技术得到了飞速的发展和完善.其控制策略涵盖了传统PID控制、逻辑控制、顺序控制等各种控制策略;同时使用PC机为基础的人机接口,使DCS的工程组态得到了简化,提高了工程组态效率.在辽化80万t PTA改扩建项目中采用横河公司的CENTUM CS3000系列DCS系统,完成对装置生产过程的控制,为装置的平稳运行奠定了基础.
不同施氮水平对莴苣产量、品质及氮肥利用率的影响

莴苣(Asparagus lettuce)是菊科一年生或二年生蔬菜,它富含胡萝卜素、硫胺素、核黄素和钙、磷、铁等矿质营养,既能生食、熟食,又可腌制和干制,是人们喜爱的蔬菜之一[1].莴苣在我国栽培面积很广,由于其产量高,对肥料的需求量也较大.但在生产实际中常常由于不合理的施肥,特别是大量地施用化学氮肥[2 - 3],不仅会引起蔬菜产量和品质的下降,还会使肥效降低,并且污染环境,给人类生活带来诸多危害.随着平衡施肥技术向园艺和经济作物的推广,如何拿出令人信服的试验数据以扭转、矫正农家滥用氮素化肥的现状,把握蔬菜作物合理施肥量已成为蔬菜生产面临的紧迫问题[4].本研究试图通过盆栽试验,利用稳定性核素15N示踪技术,在固定P、K肥和有机肥施用量的前提下,探讨不同化学氮肥用量对莴苣产量、品质(硝酸盐、蛋白质、可溶性糖、粗纤维、维生素C含量)和氮肥利用率的影响,旨在探寻莴苣高产、优质、低污染、高氮肥利用率的合理化学氮肥用量,为莴苣的合理施肥提供理论依据.
不同施铜水平下接种AM真菌对海州香薷根际pH的影响

研究表明,丛枝菌根(Arbuscular mycorrhiza, AM)真菌对宿主植物生长和吸收、转运重金属的作用受土壤pH的影响[1 - 3].植物可以通过分泌质子或有机酸等改变根际土壤的pH,接种AM真菌可以改变宿主植物的根系分泌物[4 - 6],从而影响土壤pH.Li等[7]研究发现,接种AM真菌的白三叶在根 - 土界面、菌丝室及菌丝 - 土壤界面的pH均降低.
新生儿颈外静脉穿刺置管术的应用解剖

目的:为新生儿颈外静脉穿刺置管术提供解剖学基础.方法:对16具新生儿尸体标本的颈外静脉及相关结构进行解剖观测.结果:颈外静脉上、中、下3段的外径分别为1.2～2.4(1.8±0.5 mm、1.8～2.9(2.2±0.5 mm、2.4～3.8)(3.0±0.6 mm,长度分别为4.5～8.5)(6.9±1.4 mm、14.7～28.0(20.9±5.2 mm、16.9～29.2)(22.5±7.6 mm).结论:新生儿颈外静脉走行恒定,穿刺点应选中段中点.
124例儿童虐待案分析

世界卫生组织(1999年)将儿童虐待描述为:对儿童有义务抚养,监管及有操纵权的人做出的足以对儿童的健康生存、生长发育及尊严造成实际的或潜在的伤害行为,包括各种形式的躯体和(或)情感虐待、性虐待、忽视、及对其进行经济性剥削.这里所讲的儿童虐待在程度上较为严重，国际上目前将其分为3个类型，即身体虐待，性虐待以及精神虐待。本文通过对124例儿童虐待案的分析探索儿童虐待方式、虐待的原因及其它流行病学特征。
RP-HPLC法测定化瘀颗粒中芍药苷的含量

目的 建立化瘀颗粒中芍药苷的含量测定方法.方法 采用RP-HPLC法进行定量分析.结果 该法精密度、重现性良好,芍药苷在0.521～5.21μg内呈现较好的线性关系,平均加样回收率为99.57%,RSD为2.03%.结论 本方法操作简便,结果准确,重现性好,可以作为该制剂质量控制的方法.
半导体激光治疗运动员耳廓挫伤20例

运动员耳廓挫伤,多见于摔跤、柔道运动员,主要是训练比赛时耳廓反复摩擦、受击(1次或反复),引起耳廓软骨与皮肤之间出血或形成血肿,表现为患耳疼痛,局部压痛,在耳廓出现边界清晰的紫红色圆形肿块,穿刺常可抽出血性液体;若未及时合理处理,耳廓血肿机化形成瘢痕,可因瘢痕挛缩而变形呈菜花状,称为"摔跤耳"[1].2002年1月～2005年5月,我们在常规穿刺抽液后应用半导体激光治疗运动员耳廓挫伤20例,现报告如下.
竹地板表面装饰处理新工艺

竹地板与实木地板、强化木地板、实木复合地板同属木地板包含的四大类产品.竹地板1991年开始机械化生产,近10年得到较大发展,现全国有竹地板生产企业200多家,年生产能力达1 000万m2,实际生产量、出口量呈逐年增大之势(见表1、2).
经济核算加强药品管理

目的:随着我国医院管理规范化,使药品步入系统化、制度化、信息化管理轨道.方法:运用经济核算加强药品管理,以及应用在此基础上的扩展方法,如:物流技术应用、高低限量法、ABC分析法和其它方法.结果:通过各种药品经济管理的模式,减少药品的消耗、控制成本,规范了医院药品的管理.结论:正确的利用经济核算方法,以加强药品管理的质量,是能够提高医院的社会和经济效益的.
乌司他丁与奥曲肽联合治疗急性胰腺炎的疗效观察

目的:观察乌司他丁、奥曲肽联合治疗急性胰腺炎的临床疗效.方法:129例证实急性胰腺炎的患者进入本研究,其中乌司他丁、奥曲肽联合治疗组51例,乌司他丁对照组41例,奥曲肽对照组37例,治疗组分别与两对照组进行临床疗效比较及统计处理.结果:轻症急性胰腺炎中联合治疗组与两对照组差异无显著性(P＞0.05),重症急性胰腺炎中差异有显著性(P＜0.05).结论:乌司他丁、奥曲肽联合治疗轻症急性胰腺炎,未能提高治疗效果,对重症胰腺炎却有良好临床疗效.
突出特色坚持创新做好国防院校国家自然科学基金的申请与项目管理工作

西北工业大学是我国惟一一所以发展航空、航天、航海高新技术为特色、国家重点建设的高水平研究型大学.在基础研究方面,长期得到国家自然科学基金的持续支持,培养、造就了一批高水平的科技队伍,取得了一批自主创新的成果.
碱性成纤维细胞生长因子基因敲除肝细胞与结肠癌细胞的关系

我们通过建立一个全新的三维细胞共培养模型观察肿瘤细胞与宿主细胞之间的关系。同时观察来源于野生型及碱性成纤维细胞生长因子（FGF）-2基因敲除的小鼠的肝细胞对结肠癌细胞的移行、增殖的影响，以及共孵育一段时间后培养液内表皮细胞生长因子（EGF）、血管内皮生长因子（VEGF）浓度的变化。
硫酸软骨素对急性坏死性胰腺炎大鼠细胞连接的作用

在急性坏死性胰腺炎（ANP）发生的早期阶段氧自由基损伤细胞连接结构引起胰腺组织水肿。外源性硫酸软骨素（CS）通过抗氧化作用减轻ANP大鼠胰腺细胞损伤及胰腺水肿。本研究旨在探讨硫酸软骨素稳定ANP大鼠胰腺细胞间连接，减轻胰腺间质水肿的作用机制。
胃肝共存异物一例

患者男,37岁,右上腹隐痛2个月,来院就诊.患者2个月前偶感右上腹隐痛不适,间断低热,无明显急性病史.体检:慢性病容,腹软,肝区轻压痛,右背部扣击痛,腹部未触及包块,无其他阳性发现.B超提示:右肝后段强回声光团,实性包块,边界不清.实验室检查:外周血白细胞10.8*10~9/L,中性0.88,血沉65 mm/1h,大小便常规未见异常.
口腔扁平苔藓与丙型肝炎病毒的研究进展

口腔扁平苔藓(oral lichen planus, OLP)是目前口腔黏膜疾病中除复发性口腔溃疡之外的多见病,其病因未明,治疗过程中病情常反复发作或迁延不愈,给患者造成较大的生理和精神痛苦.目前研究发现丙型肝炎病毒(hepatitis C virus,HCV)感染与OLP的发生、发展具有相关性,这一发现可能为OLP的病因研究及临床治疗都带来新思路和新策略.我们就OLP与HCV感染关系综述如下.
弥漫大B细胞淋巴瘤基因表达谱的研究进展

弥漫大B细胞淋巴瘤(DLBCL)是最常见的一类淋巴瘤,占非霍奇金淋巴瘤的30%左右.DLBCL的临床表现、形态学、免疫表型及遗传学特征极具异质性,越来越多的证据表明其可能并不是一个真正独立的病种.
电针刺激筋缩穴对癫痫大发作和癫痫持续状态动物模型脑电图的影响

目的 观察电针刺激筋缩穴对癫痫大发作和癫痫持续状态动物模型脑电陶的影响。方法 选用成年大耳白家兔40只，分为对照组、模型组与电针组。家兔开颅后用青霉素皮质内注射，制备急性癫痫大发作和癫痫持续状态动物模型。电针组采用电针刺激筋缩穴，观察其对癫痫大发作和癫痫持续状态动物模型脑电图的影响。结果 模型组脑皮质电图显示，癫痫发作波波幅和频率较高。电针刺激癫痫动物模型筋缩穴时，家兔脑皮质电图的癫痫发作波波幅下降、频率降低；电针刺激解除后约30min，脑电图显示癫痫波波幅有所恢复，发作频率有集中的趋势。结论 电针刺激筋缩穴可抑制癫痫大发作和癫痫持续状态，减轻癫痫发作频率或强度。
经腹膜外腹腔镜前列腺癌根治术的护理

腹腔镜前列腺癌根治术是近年来国外治疗前列腺癌的新方法，有出血少、损伤小、恢复较快的优点。方法有经腹腔和腹膜外两种途径，但以经腹腔为主，本科自2003年2月至2005年2月共开展经腹膜外途径前列腺癌根治术19例，均获成功。现将此术式的围手术期护理体会报告如下。
粘虫痘病毒增效蛋白的重组表达及其生物活性

昆虫病毒增效蛋白(enhancin)在体外能促进核型多角体病毒(NPV)对昆虫离体细胞系的感染;在体内能显著提高NPV对昆虫幼虫的感染效果,并可增强苏云金芽孢杆菌(Bt)对幼虫的毒力(Hashimoto et al.,1991;Roelvink et al.,1995).
中国下肢动脉疾病研究系列报道——高危人群下肢动脉疾病的全因及心血管病病死率和危险比

中国下肢动脉疾病研究启动于2004年7月,由著名心血管病专家胡大一教授主持,同济大学心肺血管中心、首都医科大学同仁医院心血管病诊疗中心、北京大学人民医院心血管病研究所等32家单位参加的多中心研究.
拥抱中国乳业第3次商机——"夏进全家好枸杞养生奶"全案策划纪实

通过对乳品行业和夏进乳业的诊断与分析,我们明确夏进必须以"枸杞奶"为尖刀产品,切入"枸杞养生奶"新品类市场,挖掘资源优势,通过品牌营销"插位",在"红海"中开创"蓝海",打造以"枸杞蛋白+牛奶蛋白+闪融技术=DPM"为核心卖点的"全家好养生奶",力做新品类冠军.
酒精性脂肪肝分子机制的研究进展

酒精性脂肪肝是酒精性肝病的三种组织病理学形式之一,其发病机制非常复杂.最近的研究表明:酒精性脂肪肝发生时脂肪酸的氧化和合成失衡,这主要受两个转录因子的调控,即过氧化物酶体增殖物激活受体(peroxisome proliferator-activated receptor,PPAR)和固醇调节元件结合蛋白(sterol regulatory element binding protein,SREBP).乙醇如何作用于PPAR、SREBP?其信号传导通路如何?现综述如下.
依匹斯汀治疗慢性特发性荨麻疹206例

依匹斯汀（Epinastine）是一种新型抗组胺药，为评价该药的临床疗效和安全性，我们于2005年10月至2006年3月，对依匹斯汀治疗慢性特发性荨麻疹（CIU）进行随机、开放性临床观察，现报道如下。
外伤变色牙髓腔钙化的临床研究

目的:研究外伤变色牙髓腔钙化情况.方法: 选择外伤变色牙,拍摄X线片,观察髓腔钙化情况,并作根管治疗术.结果: 93例中有9例髓腔变窄,6例髓腔完全钙化,78例有根尖周稀疏区.结论:年轻恒牙髓腔钙化发生率高于成熟恒牙,并随时间推移髓腔钙化发生率增高,外伤变色牙大多有根尖周稀疏区.
龙政直流双极闭锁事故华东电网频率特性分析

通过数字仿真复现了"11·20"龙政直流双极闭锁事故华东电网的频率响应.分析了频率仿真结果与实际系统频率响应差异的原因,并以事故前系统运行方式为基础,校核计算了华东电网低频减载整定配置方案,初步分析了华东电网频率响应特性.
经皮腰椎成形术致骨水泥肺栓塞一例

患者女性,53岁,因摔伤后腰痛1 d于2006年1月24日入院.1 d 前患者摔倒后出现腰痛,2 h后疼痛加剧,腰椎X线片提示第1腰椎压缩性骨折(图1),为进一步诊治而入院.入院后查体:体温36.5 ℃,呼吸18次/min,血压130/85 mm Hg(1 mm Hg=0.133 kPa).意识清楚,表情痛苦,平卧位.皮肤黏膜无黄染,表浅淋巴结无肿大,两侧呼吸动度一致,两肺呼吸音清晰,心率84次/min,律齐,各瓣膜区未闻及杂音,肝脾未触及.第1腰椎表面压痛.神经系统检查未见异常.血常规、血生化、凝血功能检查及X线胸片未见异常.
表达Ag85B-ESAT6的重组卡介苗在小鼠体内诱导的免疫应答及保护力

超表达分泌蛋白Ag85B的重组卡介苗免疫豚鼠获得的保护效力超过卡介苗[1],这为研究新型结核病疫苗提供了思路.为了全面评估我们构建的融合表达Ag85B与ESAT6的重组卡介苗免疫学特性,我们进一步研究了该菌株在小鼠体内诱发的免疫应答水平及其对结核分枝杆菌毒株感染的保护力.
临床应用经方应抓住哪些要点？

汉·张仲景在<伤寒论>、<金匮要略>中所创立的方剂因其配伍精当,疗效显著,被后世誉称为"经方".纵观<伤寒论>、<金匮要略>,张仲景用经方的主要思维方法是"有是证用是药",追求"汤证相应"的契合关系,即张仲景所云:"病皆与方相应者,乃服之"(<通脉四逆汤方后注>).今人应用经方,必须熟悉张仲景的这种思维方法,掌握经方应用的辨证要点,才能提高疗效.
白头翁治疗外阴色素减退疾病

白头翁系毛莨科植物pulsatilla chinensis(Bge)Regel的干燥根,性味苦寒,入大肠、肝、胃经,能够清热凉血、解毒,主治热毒血痢、温疟寒热、鼻、血痔.导师王秀霞教授善用白头翁治疗外阴色素减退疾病,兹介绍典型病例如下.
新疆滴灌条件下65份棉花资源材料的光合速率

棉花的生物学产量和经济学产量主要来源于光合作用.提高光合效率是棉花增产的主要途径之一.对现有资源材料的光合表现作出正确评价,对于选育高光效棉花品种具有重要的实践意义.在玉米上,李少昆等研究了132个玉米自交系,肯定了玉米自交系间在光合速率上存在着基 因型差异;屠曾平等对水稻品种资源的净光合速率的种间差异也作了系统的测定.棉花光合特性 的研究也有较多报道,但在新疆滴灌条件下对大量不同棉花基因型间光合速率的差异研究开展较少.本文在新疆特有的生态条件下,对收集的65 份棉花资源材料光合速率进行了测定和评价,以期筛选出高光效基因型的棉花资源材料,为棉花光合育种服务.
SSR和AFLP技术鉴定棉花遗传资源的比较研究

选用58个陆地棉抗枯、黄萎病品种,采用SSR和AFLP技术对棉花品种资源进行鉴定,并对两种标记方法加以比较,探讨两种方法的应用效果,为分子标记技术在棉花种质资源研究上的进一步应用提供理论依据.
抗β_1和M_2受体自身抗体和神经内分泌激素与高血压合并肾损害的关系

目的：探讨抗β_1受体和M_2受体自身抗体与高血压病合并肾损害关系.方法：以合成的β_1和M_2受体多肽片段为抗原,应用ELISA技术,检测61例高血压并肾损害患者和60例高血压无肾损患者及40例正常人血清中抗β_1和 M_2受体自身抗体.同时用放射免疫法测定血浆肾素活性（PRA）、血管紧张素Ⅱ（AⅡ）、醛固酮（ALD）浓度,用荧光分析法测定肾上腺素（E）、去甲肾上腺素（NE）水平.结果：高血压病并肾损害组抗β_1和M_2受体抗体阳性率分别为62.2%和49.2%明显高于高血压无肾损害组的11.3% 和 11.7%及正常对照组的15%和10%（P＜0.01, P＜0.001）,高血压病并肾损害组血浆中神经内分泌激素水平（PRA、ALD、CA、E、NE）明显高于高血压组及正常对照（P＜0.05, P＜0.01）.结论：血清抗β_1和 M_2受体自身抗体可能与高血压合并肾损害发病有关,同时伴有神经内分泌激活.
促进证据传播,注重质量改进——14届Cochrane协作网年会概述

一年一度的国际Cochrane协作网第14届年会于2006年10月23～26日在爱尔兰都伯林市成功召开,来自欧洲、亚洲、美洲等30余个国家和地区800余名代表参会.本届年会主席是英国Cochrane中心主任Mike Clarke教授.会议期间,全世界12个Cochrane中心主任和14名协作网指导委员会成员召开了例行的工作会.年会举办了全体大会3场,平行会议2场,专题培训班55个,大会发言交流论文48篇,壁报交流论文168篇.主要内容包括证据的传播,系统评价的质量改进,发展中国家面临的困难与挑战等.最新动态有:诊断试验系统评价、Umbrella系统评价、系统评价研究的实际意义、国际临床试验注册制度新进展等报告.中国Cochrane中心一行4人参加了本届年会并进行了广泛交流.
大体标本摄影在临床病理中的应用

大体标本摄影作为一项国内尚未普及的技术,受到病理工作者和临床医师的广泛关注,此项技术在医院的业务发展和减少医疗纠纷中能起到一定的作用,已逐步得到认同和肯定.我科自2003年开展此项工作,现总结如下,旨在探讨其在病理诊断质量和医疗投诉事件中的作用.
论资本成本的计量及运用

资本成本是特定主体为取得和使用资本而发生或应当发生的经济利益的总流出。仅从筹资决策考察，不同计量模型所确定的资本成本均有标杆作用，但投资项目预期报酬高于必要报酬是企业获取超额回报，并为股东创造价值的理财思想，其决定了资本成本计量模型与预期报酬计量模型之间具有高度关联性，只有实现投资决策和筹资决策之间的高效互动，才能进一步提高该指标在财务资源配置中的适用性和科学性。
预应力结构的卫生间同层排水

预应力结构住宅楼卫生间不能设置沉箱结构,不允许在楼板开＞300mm的孔洞.结合广州市合和新城工程实例,介绍了此种楼板卫生间同层排水立管设于外墙阴角,卫生洁具侧排,卫生间局部下沉安装地漏等一系列设计措施.
关于平流式沉淀池进水和排泥问题的探讨

对平流式沉淀池入口布置形式和排泥量的确定进行了分析,认为其入口布置形式以穿孔花墙为佳.排泥量的确定可分为排泥水量和干泥量,建议确定沉淀池设计排泥水量和设计干泥量时,尽可能取得原水水质的实测资料,在无实测资料的情况下,应结合公式计算法和排泥方式法确定.
耐药结核病及其防治

目前结核病呈现出高发病、高感染、高耐药、高死亡的特点.耐药结核病则是结核病防治工作的重点和难点.为有效控制其发展,本文分析了其产生和流行的医源性和社会性原因,并从7个方面阐述了耐药结核病的防治措施.即广泛普及结核病防治的知识;加强对流动人口的管理和监测;提高对耐药结核病的诊治水平;开展中西医结合和其他辅助治疗;预防社区和医院感染;完善结核病的耐药监测;积极开展抗结核新药、新手段和新方法的研究.On recently years, the tuberculosis shows the characteristic of higher incidence> infection, drug-resistance., and Morbidity" However, the emphasis and difficult is preventing and controling of multidrug resistant tuberculosis. Its nosocomial and societal causes of occuring and prevailing were analyzed and control measures from seven facets were expounded in this article. Those include prevention knowledge widely, strengthen management and supervision of floating population, improve ability of diagnosis and therepy, develop combinasion treatment of traditional Chinese medicine and western medicine and other assistant treatment, prevent community and nosocomial infection, perfect the drug-resistant surveillance system, carry out the study of new drug, measure and treatment to anti-tuberculosis actively.