mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
油菜素内酯在黄瓜上的应用效果研究

通过发芽期浸种和幼苗期喷施试验,分别研究了油菜素内酯(BR)不同处理对黄瓜种子萌芽和幼苗生长的影响.试验结果表明,适宜浓度油菜素内酯可提高种子发芽势、发芽率,促进胚根伸长和侧根发生,其中以0.1 mg/kg浓度浸种的效果最为显著.相同浓度的油菜素内酯对不同品种的影响也有差异.在幼苗期试验中喷施油菜素内酯,有利于幼苗生长,0.01 mg/kg浓度喷施的效果最为显著,促进了幼苗的营养生长,提高了幼苗的株高、茎粗和干物质积累量,叶面积和壮苗指标也有所增加,对培育壮苗有一定的促进作用.
裂颖与去壳对水稻种子萌发生理的初步研究

利用3个在四川生产应用比较普遍的杂交水稻品种为材料,将试验种子做裂颖、去壳处理,以正常颖壳种子为对照,研究颖壳对种子萌芽生长的影响.结果表明,萌芽速度、物质运转效率和贮藏物质消耗率为:去壳＞裂颖＞完整;随萌发时间的延长,α-淀粉酶活性下降速率为:去壳＞裂颖＞完整;根冠比为:去壳＜裂颖＜完整;叶绿素含量为:完整处理为最高,裂颖与去壳偏低.表明颖壳对水稻种子正常萌芽至关重要,是水稻幼苗健康生长的保障,是培育优质稻苗的基础.
改进的盐溶蛋白电泳法鉴定玉米品种农大108种子纯度及品种真实性

本试验在《玉米种子纯度盐溶蛋白电泳鉴定方法》的基础上,通过对分离胶中丙烯酰胺和N,N-亚甲基双丙烯酰胺的浓度进行研究,建立了一种适合于鉴定玉米品种农大108种子纯度和品种真实性的方法.结果表明,该方法对农大108的种子纯度和品种真实性进行检测,具有电泳谱带清晰、分辨率高和重现性好等特点.
耐密超高产杂交玉米新品种顺单6号的选育与应用

顺单6号系安顺市农科所针对贵州省喀斯特山区海拔落差大,光照差,积温低等生态、气候条件和土壤瘠薄、干旱频繁等客观条件,对引进的P类群自交系和Mo 17自交系通过导入北方血源和地方血源基因,进行定向选育而成的耐密、超高产杂交玉米新品种.2008年通过贵州省农作物品种审定委员会审定,2006～2008年参加贵州省"十一·五"重大专项"超级玉米品种示范",在安顺市海拔1400m的地区最高单产达933.1kg/667m~2,"百亩"连片单产达814kg/667m~2,该品种适宜在贵州山区推广种植.
水杨酸对铜胁迫下玉米幼苗生理特性的影响

研究了不同浓度的水杨酸(SA)对铜(Cu~(2+))胁迫下玉米幼苗生理特性的影响.结果表明:在Cu~(2+)胁迫下,玉米幼苗生长受到一定抑制作用;在一定范围内,外源SA对Cu~(2+)的影响有抵抗作用,表现为玉米幼苗叶片叶绿素和可溶性蛋白质的含量、SOD、POD的活性均升高,MDA及矿质元素的积累降低等.
大果蔷薇种子的休眠与萌发初探

运用生物鉴定(白菜籽发芽实验),赤霉素溶液浸种和低温层积等方法,探讨大果蔷薇种子休眠的原因和解除休眠的措施.结果表明:大果蔷薇种子的种皮和种胚都含有发芽抑制物和缺乏促进发芽的物质,通过500mg/L赤霉素溶液浸种和5℃低温层积,可以有效地解除休眠,促进萌发,而运用赤霉素溶液浸种后结合低温层积处理效果最佳.
青贮玉米育种初探

青贮玉米是发展畜牧业不可或缺的基础饲料之一,也是最经济的饲料.本文对青贮玉米发展的必要性、评价指标、育种的目标进行了综述,并且通过对近5年来国审青贮玉米的各个指标及父母本血缘关系的汇总、分析,得出了在青贮玉米育种过程中应该注意的6个方面,为今后青贮玉米育种研究提供参考.
甘蓝型优质高产杂交油菜新品种油研50恢复系6215 R的选育

1996年春,以R 08(从中国油料作物研究所引进的甘蓝型油菜黑籽双低常规品系89008中系选的优系)为母本和甘蓝型油菜黑籽双低品种6218(从上海市大面积油菜生产区引进的沪油15中的1个选系)为父本进行杂交,在此基础上经过7年8代的连续定向选择,于2002年育成了甘蓝型油菜双低常规优质品系(隐性核不育恢复系)6215 R.其芥酸含量均在1%以下,硫甙23.6～28.6 μmol/g,含油量42.6%～43.7%,种子蛋白质21.6%～23.8%.以该品系作恢复系组配的优质杂交油菜新组合油YL 050已通过贵州省2005～2007年区试和生产试验,于2007年12月通过贵州省农作物品种审定委员会审定,正式定名为油研50.
新引东盟印度优质香稻品种(系)的种性和产量鉴定及利用评价

从泰国、菲律宾及印度引进6个优质香稻新品种(系),2008年早季在广西农业科学院水稻研究所试验田种植,观察其生物学特征特性、经济性状、米质及抗性表现,并与本地对照进行产比.结果表明,所引品种(系)产量表现不一,差异明显,其中5个品种(系)的农艺性状不够整齐一致,有3个品种(系)分离明显.但共性是米质特优,谷粒细长,色香味上佳,株叶形态好,叶片细小厚直,抗倒伏抗病虫性能好,株高和生育期适中,均感温,适合广西及华南部分地区作高档有机米直接利用和作亲本转育利用.
保障我国粮食安全的水稻品种创新与应用研究

以宣城市水稻生产现状和品种创新成果为例,探讨加强水稻品种创新和应用研究的意义,提出以科学发展观统领水稻科技创新工作,全面提升科研工作者实践能力,有利于实现原始创新和集成创新,促进成果转化.
人工加速老化对蒙古莸种子发芽的影响

以蒙古莸种子为对象,研究人工加速老化对其发芽的影响.将蒙古莸种子分别置于40 ℃和45 ℃,100%相对湿度下进行人工加速老化,老化处理时间为0(ck)、12、24、36、48、60、72 h.结果表明,随着老化温度的升高和老化时间的延长,蒙古莸种子的发芽势、发芽率、发芽指数和活力指数均呈现明显的下降趋势.老化处理的温度、时间及二者之间的交互作用均对蒙古莸种子活力造成显著性影响.
心尖球囊综合征一例并文献复习

心尖球囊综合征是近年来日益受到重视的一类心肌病变,该疾病的临床表现类似急性冠状动脉(冠脉)综合征,患者往往被误诊为冠脉痉挛或冠脉内血栓的自发溶解等机制导致的急性冠脉事件.
前列腺导管腺癌一例报告

患者,67岁.血尿1年加重3个月,伴尿频、尿急和尿痛于2004年11月入院.直肠指诊前列腺增大,质韧、边缘清楚、中央沟变浅,未触及结节.直肠指诊后血尿加重.血清PSA 7.24 ng/ml,游离PSA 0.76 ng/ml.超声检查前列腺大小4.6 cm×4.1 cm×4.1 cm,内腺2.4 cm×2.4 cm×2.8 tin,内外腺间见高回声,内腺见低回声结节,膀胱壁左侧见1.1 cm×1.0 cm低回声病变.MRI检查示前列腺外周区增大,呈等T1长T2混杂信号,与膀胱直肠关系密切,直肠间隙存在,精囊无异常.
急性肺损伤患者肺复张手法的应用评价

背景和目的:对于急性肺损伤(ALI)患者应用肺复张手法的安全性和有效性尚存争议,本研究旨在对成人ALI患者接受肺复张手法出现的生理学效应和不良事件进行系统评价.方法:对Au病例的系列、观察性研究和随机临床试验的结果进行分类综述.
环保型硫酸钡PVC复合防护板屏蔽性能的研究

在放射防护器材应用领域中,广泛使用传统的防护材料铅板、防护涂料板、复合防护板等材料.这些防护材料大多掺有氧化铅粉等重金属物质以提高防护质量,而且铅价格昂贵,大大提高了防护成本,而氧化铅粉等重金属极易转移到环境中造成严重的环境污染.为避免重金属铅对环境的污染,降低防护屏蔽成本,寻找能够替代铅的新型辐射屏蔽材料,对环保型硫酸钡PVC复合防护板的辐射屏蔽性能进行了研究.
脾脏弥漫性毛细血管瘤病一例

患者男,19岁,藏族.主因腹部肿块伴间断性呕血2年,加重2个月于2007年10月20日收入西藏军区总医院.体检:腹部膨隆,左上腹压痛阳性,反跳痛阴性.脾Ⅱ度肿大,脾区压痛阳性,腹部移动性浊音阴性.血常规:白细胞(WBC):6.4×10 9/L,红细胞(RBC):3.58×10 12/L,血红蛋白(Hb):6.1g/L,血小板(PLT):30×10 9/L.骨髓象:红细胞和巨核细胞两系增生,粒系比例减低,粒、红两系各级形态轻度异常.
杂色曲霉素致癌性及生物学效应的研究

杂色曲霉素(sterigmatocystin,ST)是由杂色曲霉、构巢曲霉等产生的一种具有致癌性的真菌毒素,在化学结构上属于黄曲霉素前体物质,可与DNA开成加合物.
不合理使用人参多糖注射液分析

目的:对我院人参多糖注射液使用情况进行分析,为临床合理用药提供依据.方法:逐项调查使用人参多糖注射液患者的诊断、给药途径、单次用量和给药频率,进行分类、统计分析.结果:人参多糖注射液的适应证相符率为77%,使用途径规范率为3%,给药频率规范率为4%,单次用量规范率为5%.人参多糖注射液在给药途径、单次用量、给药频率和适应证四个方面存在不规范现象.结论:应严格按说明书的规定使用药品.
Removal of vanadium from ammonium molybdate solution by ion exchange

The separation techniques of vanadium and molybdenum were summarized, and a new method of removal V(Ⅴ) from Mo(Ⅵ) by adsorption with chelate resin was presented. Nine kinds of chelate resins were used to investigate the adsorbent capability of V(Ⅴ) in ammonium molybdate solution with static method. The test results show that DDAS, CUW and CW-2 resins can easily adsorb V(Ⅴ) in ammonium molybdate solution, but hardly adsorb Mo(Ⅵ). The dynamic experimental results show more than 99.5% of V(Ⅴ) can be adsorbed, and the adsorption rate of Mo(Ⅵ) is less than 0.27% at 294-296 K for 60 min at pH 7.42-8.02. The mass ratio of V to Mo decreases to l/5 0000 in the effluent from 1/255 in the initial solution. The loaded resin can be desorbed by 5% NH_3·H_2O solution, and the vanadium desorption rate can reach 99.6%. The max concentration of vanadium in desorbed solution can reach 20 g/L, while the concentration of molybdenum is less than 0.8 g/L.
Preparation and properties of SiCN diffusion barrier layer for Cu interconnect in ULSI

SiCN thin films and Cu/SiCN/Si structures were fabricated by magnetron sputtering. And some samples underwent the rapid thermal annealing(RTA) processing. The thin-film surface morphology, crystal structure and electronic properties were characterized by atomic force microscopy(AFM), X-ray diffractometry(XRD), Fourier transform infrared transmission(FTIR) and four-point probe(FPP) analyses. The results reveal the formation of complex networks among the three elements, Si, C and N, and the existence of different chemical bonds in the SiCN films, such as Si-C, Si-N, C-N and C=N. The as-deposited SiCN thin films are amorphous in the Cu/SiCN/Si structures and have good thermal stability, and the SiCN thin films are still able to prevent the diffusion reaction between Cu and Si interface after RTA processing at 600 ℃ for 5 min.
Electrochemical noise characteristics in corrosion process of AZ91D magnesium alloy in neutral chloride solution

The corrosion process of AZ91D magnesium alloy in neutral 1% (mass fraction) sodium chloride aqueous solution was investigated by electrochemical noise(EN), SEM and EDX. Fractal theory was primarily used to depict the corrosion process of the alloy. The fast wavelet transform(FWT), as well as the fast Fourier transform(FFT), was employed to analyze the EN data. The results show that the overall corrosion process can be described by three stages. The first stage corresponds to the pit nucleation and growth; the second stage involves the growth of a passive oxide layer; and the third stage involves reactivation. With increasing immersion time, fractal dimension increases fast initially, fluctuates in the medium and increases again at last. Pitting corrosion and fractal dimension increase due to the initiation and formation of pits in the initial and the end of immersion, while depresses due to the passivation in the medium period. The results of SEM and EDX support the above conclusions.
Extraction of niobium from sulfate leach liquor of Egyptian ore sample by triazoloquinazolinone

The refractory niobium bearing minerals, Samarskite, Fergusonite, Betafite and Pyrochlore of the ore sample obtained from Kadabora, Egypt, was subjected to sulfuric acid leaching using acid concentrations varied from 17.6 to 4.5 mol/ L. The extraction of niobium from the sulfate leach liquors was done using the synthesized 8,9-dihydro[1,2,4]triazolo[1,5-a]quinazolin- 6(7H)-one dissolved in methylene chloride. It has been found that extraction efficiency of 84% was achieved by contacting equal volumes of 0.32% extractant with 4.5 mol/L sulfate solution for 15 min. The stripping was performed by 0.5 mol/L HF with efficiency of 86.7%.
Effect of predeformation on semi-solid microstructure of ZK60+RE magnesium alloy

Microscopical techniques were used to provide the semi-solid microstructure evolutions of ZK60+RE alloys formed by compression and equal channel angular extrusion(ECAE), respectively. It is found that after compression and ECAE, as-cast microstructures exhibit an obvious directional characteristic. The predeformation exerts a significant influence on the formation of thixotropic microstructures during partial remelting. Coalescence and Ostwald ripening are operative in the semi-solid mixture for both compression and ECAE formed alloys. Furthermore, the degree of spheroidization of ECAE formed alloy is better than that of compression formed alloy in appearance.
Properties of nanocrystalline copper prepared by vacuum-warm-compaction method

Nanocrystalline Cu with average grain size of 22.8-25.3 nm was prepared by vacuum-warm-compaction method. Scanning electronic microscope, HMV-2 type microhardness tester, X-ray diffractometer, and 6157 type electrometer were used to determine the microstructure, microhardness and electrical resistivity of as-prepared nanocrystalline Cu, respectively. The results show that the microhardness of nanocrystalline Cu increases with larger pressure, longer duration of pressure or higher temperature. The highest microhardness of nanocrystalline Cu is 3.8 GPa, which is 7 times higher than that of coarse-grained copper. The electrical resistivity of as-prepared specimens is (1.2-1.4)×10~(-7) Ω·m at temperature 233-293 K, which is 5-6 times higher than that of the coarse-grained copper.
Compound forming technology of outside 3D integral fin of copper tubes

Using rolling-ploughing-extrusion compound processing methods, a 3D integral-fin structure on outside surface of red copper tube with diameter of 16.0 mm and wall thickness of 1.5 mm was obtained. When both rolling depth and ploughing-extrusion (P-E) depth were 0.2 mm, rotating speed was 50 r/min, feed speed was 0.16 mm/r, 3D fin structures with height of 0.25 mm were gotten. Two different fin structures were obtained in grooves formed with rolling-ploughing-extrusion compound forming technology and observed by scanning electron microscope(SEM). One is the compound structure with V-shaped groove and U-shaped groove, and the other is the single structure with V-shaped grooves. Two kinds of groove structures obtained by rolling processing and ploughing extrusion processing are restricted together by groove interval and rolling depth, and pitch and P-E depth, respectively. Based on the analysis of interaction of rolling and P-E processing, it is found from the result that the outside 3D integral-fin can be achieved by rolling-ploughing-extrusion compound processing when single V-shaped groove structures are formed by both rolling and P-E processing.
丹参酮Ⅱ-A对抗炎症因子IL-10的调节作用时效关系

IL-10被称为细胞因子合成抑制因子,为体内重要的免疫抑制因子,主要由T细胞产生,其主要的生物学特性是抑制IL-2、IFN-γ、IFN-β的产生,此外也可促进细胞毒性淋巴细胞的诱导,增强B细胞的增殖与分化,产生免疫球蛋白,抑制单核-巨噬细胞抗原传递功能.IL-10是一种研究较为清楚的抗炎症因子[1～3],可以抑制巨噬细胞中(ROI)和(RNI)的表达[4,5].它通过反控调节抑制了许多免疫活性细胞因子,间接的参与了Th1反应,从而限制并最终抑制了炎症反应[6].动物模型或临床治疗均表明,利用IL-10对炎症的治疗都有不错的疗效,它可以维持自身免疫系统的稳定,从而保护宿主不被炎症感染.本实验检测了丹参酮Ⅱ-A在刺激RAW264.7细胞过程中,IL-10的含量变化,进而揭示丹参酮Ⅱ-A对IL-10的作用关系.
Effect of Ca and Y additions on oxidation behavior of AZ91 alloy at elevated temperatures

In order to develop the ignition-proof magnesium alloy, the effect of alloying elements, Ca and Y, on the oxidation behavior of AZ91 magnesium alloy at elevated temperatures was investigated. The ignition-proof performance, oxide products and oxidation kinetics of Ca- and Y-containing AZ91 alloys were studied. The results indicate that the proper addition of Ca can increase the ignition point of AZ91 alloy greatly. However, the oxide film of Ca-bearing AZ91 alloy formed at elevated temperature is thick and brittle, which is prone to crack in melting and cooling process. In addition, the oxide film of AZ91-xCa alloy is incompact and cannot inhibit the diffusion of reaction particles. The oxide film of AZ91-xCa alloy turns to thin and plastic one after Y is added, and the density of the oxide film increases greatly due to the formation of composite oxide film composed of MgO, CaO and Y_2O_3.
Design of highly efficient elliptic curve crypto-processor with two multiplications over GF(2~(163))

In this article, a parallel hardware processor is presented to compute elliptic curve scalar multiplication in polynomial basis representation. The processor is applicable to the operations of scalar multiplication by using a modular arithmetic logic unit (MALU). The MALU consists of two multiplications, one addition, and one squaring. The two multiplications and the addition or squaring can be computed in parallel. The whole computations of scalar multiplication over GF(2~(163)) can be performed in 3 064 cycles. The simulation results based on Xilinx Virtex2 XC2V6000 FPGAs show that the proposed design can compute random GF(2~(163)) elliptic curve scalar multiplication operations in 31.17 μs, and the resource occupies 3 994 registers and 15 527 LUTs, which indicates that the crypto-processor is suitable for high-performance application.
对脊髓型颈椎病手术入路与术式的思考

颈椎病作为骨科的常见病,其诊断和治疗一直受到重视.应用手术方法治疗颈椎病已经历了半个多世纪.20世纪60年代至70年代,颈椎病的手术治疗以经前路途径为主,Smith-Robinson的颈前路椎间盘切除减压和椎体间植骨融合技术曾一度成为颈椎病治疗的主流术式.80年代后期,伴随对颈椎管狭窄和颈椎后纵韧带骨化认识的不断深入,同时也在一定程度上受到日本学者对颈椎病治疗理念的影响,颈椎后路椎板成形椎管扩大术(leminoplasty)逐渐成为与颈椎前路椎间盘切除减压术式并重的常用手术技术.
New technologies in the gastrointestinal clinic and research: Impedance and high-resolution manometry

The last five years have been an exciting time in the study of esophageal motor disorders due to the recent advances in esophageal function testing. New technologies have emerged, such as intraluminal impedance, while conventional techniques, such as manometry, have enjoyed many improvements due to advances in transducer technology, computerization and graphic data presentation. While these techniques provide more detailed information regarding esophageal function, our understanding of whether they can improve our ability to diagnose and treat patients more effectively is evolving. These techniques are also excellent research tools and they have added substantially to our understanding of esophageal motor function in dysphagia. This review describes the potential benefits that these new technologies may have over conventional techniques for the evaluation of dysphagia.
校医院门诊口服抗菌药物情况分析

随着医药科学的发展,临床药物的新陈交替显著加快,为提高临床用药的安全性和有效性,笔者对校医院门诊2006～2008年口服抗菌药物使用情况进行分析,以掌握抗菌药物使用情况,为合理用药提供参考依据.
《中国医学史》双语教学初探

医学史是综合医学知识和人文知识的交叉学科,对于医学院校开展人文素质教育具有重要的意义~([1]);笔者在讲授《中国医学史》的过程中,运用汉、英两种语言,在教授医学史知识的同时,给学生们创造学习和使用英语的空间,培养他们使用英、汉双语思维并根据交际对象和工作环境的需要进行切换的能力,最终具备跨文化交流能力,树立跨文化意识.通过教学实践,收到了较好的效果.现总结如下.
复方颠倒散药物面膜的制备及临床疗效观察

目的 制备复方颠倒散药物面膜并观察其疗效.方法 根据单因素考察和正交实验设计优化处方,采用乳膏剂的制备方法制备复方颠倒散药物面膜;观察37例患者应用后的治疗效果.结果 该面膜制备工艺可行,质量控制标准可靠,临床有效率86.5%.结论 该制剂组方科学,工艺合理简单,质量稳定可靠,临床疗效确切,适合于轻中度痤疮患者的治疗.
肺炎支原体培养和白细胞检测在小儿肺炎中的应用

小儿患支原体肺炎,症状往往不太典型,容易引起误诊,并且学龄前小儿肺炎支原体(M.pneumoniae,MP)感染有增加趁势,对MP感染者也不太重视检查白细胞.
贵州产金星蕨科药用植物的种类和分布研究

目的 对贵州产金星蕨科药用植物的种类和分布进行研究.方法 通过野外考察、标本鉴定以及资料的收集、分析和研究等.结果 基本弄清了贵州产金星蕨科药用植物的种类和分布情况.结论 贵州有金星蕨科植物共56种,可作药用植物26种,除少数种外,贵州各地均有分布.
黔产瘤足蕨科、膜蕨科、裸子蕨科、书带蕨科药用植物的资源研究

目的 对黔产瘤足蕨科、膜蕨科、裸子蕨科、书带蕨科药用蕨类植物的种类和分布进行研究.方法 通过野外考察、标本鉴定以及资料的收集、分析和研究等.结果 基本弄清了黔产瘤足蕨科、膜蕨科、裸子蕨科、书带蕨科药用蕨类植物的种类和分布情况.结论 贵州有瘤足蕨科、膜蕨科、裸子蕨科、书带蕨科植物共50种,可作药用植物22种,除少数种外,贵州各地均有分布.
培土生金法治疗老年慢性肺部感染的临床观察

目的 观察以中医培土生金法治疗老年慢性肺部感染的临床疗效.方法 30例入选患者以中药口服治疗,方药以六君子汤(南沙参、茯苓、法半夏、陈皮、白术、甘草)为基础方,随证加减,1剂/d,连服1个月.结果 总有效率86.67%;治疗前后积分比较,治疗前积分高于治疗后积分(P<0.01),差别有统计学意义.结论 培土生金法是治疗老年慢性肺部感染有效的方法.
中医药治疗对慢性胃炎患者生存质量的影响

目的 运用SF-36量表来评价中医药治疗对肝胃不和型慢性浅表性胃炎患者生存质量的改善情况.方法 选择符合纳入标准的病例80例,运用具有疏肝理气,和胃解郁的小柴胡汤加减治疗,疗程4周,治疗前后分别填写临床症状调查量表和SF-36量表;对照组为健康人群,采用调查问卷形式填写SF-36量表.结果 和健康人群比较,患者RP,BP,GH,VT,MH 5个维度积分较正常人群低(P<0.05),经治疗后,患者的胃脘疼痛、上腹胀的症状改善明显,RP,BP,GH,VT,SF和MH 6个维度的积分较治疗前有显著改善(P<0.05).结论 疏肝理气,和胃解郁法治疗肝胃不和型慢性浅表性胃炎,可以改善患者的临床症状和生存质量,具有身心双重调节的优势.
硫酸阿米卡星-有机蒙脱土抗菌复合物的制备及性能

目的 合成一种新型抗菌复合材料.方法 以离子交换的方式将硫酸阿米卡星插入到蒙脱土的层间,制备有机蒙脱土,通过FTIR、XRD对复合材料的性能进行表征,通过抑菌实验及体外释放试验检测抗菌活性和缓释效果.结果 硫酸阿米卡星已进入蒙脱土层间,d_(001)面层间距从1.531 nm增加到1.915 nm.结论 抗菌有机蒙脱土具有良好的抗菌性能及缓释效果.
藏药朗庆阿塔对四氯化碳所致肝纤维化大鼠的治疗作用

目的 研究藏药朗庆阿塔治疗四氯化碳致大鼠肝纤维化的药效作用及机理.方法 建立CCl_4 诱导的化学性肝纤维化模型,观察藏药朗庆阿塔对肝纤维化大鼠血清的ALT,AST,ALP,Tbil,LN,HA,CⅣ,PⅢNP及对大鼠肝脏指数、羟脯氨酸(Hyp)含量和肝脏病理学变化的影响.结果 朗庆阿塔给药(2.85,5.7,11.4g生药/kg,ig)均显著降低模型大鼠的血清ALT,AST,ALP活性,减少血清中HA,PⅢNP和肝组织中Hyp的含量,明显改善肝脏组织的病理性损伤.结论 藏药朗庆阿塔对CCl_4致大鼠肝纤维化有明显治疗作用.
超临界二氧化碳萃取与分子蒸馏技术联用提取姜黄有效成分的研究

目的 筛选提取姜黄有效成分的最佳工艺条件.方法 用正交实验对提取姜黄素和姜黄精油过程中各操作参数进行优化.结果 新工艺完成了姜黄油和姜黄素的分步提取,而且一定程度上达到了姜黄油和姜黄素的提取、分离同时实现的效果.姜黄素提取率达到93.60%,姜黄精油得率达5.49%.结论 姜黄有效成分提取工艺最佳条件为:夹带剂和原料的重量比为6:1,分子蒸馏温度120℃,分子蒸馏压力为5 Pa.
正交实验法筛选千斤拔多糖的提取分离工艺

目的 研究千斤拔多糖的提取分离的最佳工艺条件.方法 采用正交设计法筛选.结果 千斤拔多糖的最佳提取分离工艺为:采用加热回流法,石油醚(30～60 ℃)回流3 h;滤渣用乙醚回流5 h;滤渣用95 %乙醇回流5 h,滤渣用18倍量提取3次,2 h/次,提取液浓缩至10 ml,加入乙醇后使溶液中乙醇的浓度约为90%,静置8 h后抽滤,真空干燥即得千斤拔多糖粗品.结论 该实验为千斤拔多糖的提取分离的条件提供了参考,为千斤拔的进一步开发研究提供了依据.
强精汤治疗少弱精症临床疗效观察

目的 研究强精汤治疗男性少弱精不育症临床疗效和对精子质量的影响.方法 60例男性少弱精子不育症患者随机分为治疗组30例,口服强精汤;对照组30例,口服硫酸锌片和维生素E胶囊治疗.两组均以3个月为1疗程.结果 治疗组和对照组临床治愈率分别为36.67%,16.67%;总有效率分别为90.00%,70.00%.治疗组的临床治愈率和总有效率优于对照组(P<0.01).治疗组治疗后精子密度和精子活力提高较治疗前和对照组治疗后更显著(P<0.01).结论 强精汤能明显增加精子密度,提高精子活力,对男性少弱精子致不育症有明显疗效.
中西医联合治疗28例真菌感染诱发哮喘

引起变态反应的真菌主要为空气传播非致病性腐生菌,真菌的孢子及菌丝均有抗原性,同属不同种的真菌可有交叉抗原性(~[1]),临床上以发作性喘息为主要表现,与支气管哮喘、COPD急性发作等难以鉴别.
可摘局部义齿修复后基牙金属全冠制作的临床体会

可摘局部义齿磨切牙体少,适应证广,价格适宜,但修复后多伴有不同程度的食物嵌塞,基牙邻接面易发生龋损,有些基牙常规充填治疗效果不好,往往需要做全冠加以保护.患者原义齿功能良好,不愿意更换,在其基牙上制作全冠后必须保证和原义齿的良好密合.笔者收集我院2005-09～2007-12 40 例共51 颗龋损基牙采用简便易行的方法制作金属全冠,收到良好的效果,现介绍如下.
Theoretical Study on Drift of Ca~(2+) Spiral Waves Controlled by Electric Field

Based on the Tang-Othmer Ca~(2+) model, the drift behavior of intracellular Ca~(2+) spiral waves under the influence of weak electric field is investigated. Numerical results show that the dependence of drift velocity of the spiral tip on dc electric field is similar to experimental observations in BZ system. When an ac electric field is applied, interesting resonant-drift phenomenon is observed with ω = 2ω_0. All results can be explained analytically using a proximate method.
Casimir Effect of Massive Scalar Field with Hybrid Boundary Condition in (1+1)-Dimensional Spacetime

The Casimir energy of maesive scalar field with hybrid (Dirichlet-Neumann) boundary condition is calcu-lated. In order to regularize the model, the typical methods named as mode summation method and Green's function method are used respectively. It is found that the regularized zero-point energy density depends on the scalar field's mass. When the field is massless, the result is consistent with previous literatures.
逆行前臂骨间后动脉岛状扩张皮瓣的应用

逆行前臂骨间后动脉岛状皮瓣是覆盖前臂远1/3段、腕和手皮肤缺损的可靠方法之一[1],但该皮瓣切取后,前臂背侧供区多需移植皮片修复,于明显部位留有皮片痕迹而有碍美观,是其不足.
应用二维电泳及质谱法筛选胰腺癌血清标志物

在中国,胰腺癌发病率逐渐增加,目前其肿瘤相关致死率已跃居第6位~[1].早期发现是胰腺癌得以及时治疗的前提之一.目前缺乏理想的胰腺癌血清学标志物.蛋白质组学为肿瘤研究提供了新的思维和技术平台~[2].在本研究中,我们初步探讨了二维电泳及质谱法筛选胰腺癌血清标志物中的应用,并希望发现一些与胰腺癌相关的标志物,为胰腺癌的早期诊断提供线索.
丙谷胺与奥曲肽对人大肠癌LoVo细胞增殖和细胞周期的影响

胃泌素(GAS)对结直肠癌细胞的增殖具有促进作用,而生长抑素(SS)具有广泛的抑制作用,可抑制人肠癌的生长~([1]).本研究旨在观察研究胃泌素受体拮抗剂(丙谷胺)及人工合成的八肽生长抑素(奥曲肽)对人大肠癌LoVo细胞增殖和细胞周期的影响,探讨丙谷胺与生长抑素对大肠癌细胞增殖的具体调控机制.
人端粒酶逆转录酶-双自杀基因对肝癌的靶向杀伤作用

目前联合基因治疗最常用的是有单纯疱疹病毒胸苷激酶(HSV-TK)和大肠杆菌胞嘧啶脱氨酶(CD).同时,肿瘤的基因治疗要求导人的自杀基因表达严格限制于靶细胞(肿瘤细胞),而对正常细胞的生长无影响,因此寻找肿瘤细胞的靶点成为哌待解决的现实问题~([1]).端粒酶是维持端粒长度的一种逆转录酶,对细胞增殖、衰老及永生化和癌变起重要作用~([2]).在端粒酶的二三个亚单位中端粒酶逆转录酶(hTERT)是其活性的关键限速步骤,因而hTERT启动子将成为基因靶向表达的理想开关~([3]).已有研究证实CD、TK自杀基因治疗肿瘤已取得了初步成效~([4,5]),但是两者联合应用,尤其是在hTERT启动子特异调控下靶向抗肝癌,研究尚少.本研究旨在观察评价hTERT启动子驱动下的联合自杀基因体系对肝癌细胞靶向高效表达.
颈动脉粥样硬化斑块炎症与钙化相关因子的关系

本研究旨在检测颈动脉内膜切除术(CEA)未钙化和钙化斑块纤维帽及周边区域上单核细胞趋化活化蛋白-1(MCP-1)和白细胞介素-8(IL-8),骨形成蛋白-6(BMP-6)和骨钙蛋白(Osteocalcin)基因的表达,探讨炎症与钙化的关系.
青年医师在外科研究中应注意的问题

当今临床外科发展迅速,日新月异.我们在不断地学习新知识、新技术,以提高临床诊断和处理能力.众所周知,还有太多的人体奥秘至今仍然不为人知,需要我们去更深入地探究.人体的结构、功能是如此的复杂,在特定情况下又是变化多端,如何掌握其规律并予以控制、调整;相当多疾病的病因、发病机制至今仍未明瞭;如何使治疗措施达到更完美的程度等,这些都是有待我们深入研究的内容.
大鼠肺移植后闭塞性细支气管炎模型的改进

肺移植已成为终末期肺疾病唯一有效的治疗方法,但是闭塞性细支气管炎(OB)却是肺移植后长期存活的主要障碍.目前用于OB研究的大鼠动物模型主要是采用同种异体气管腹腔大网膜包埋或皮下移植的方法.我们对原有动物模型的制作方法加以改进,采用大鼠同种异体气管原位移植,建立了一种更接近临床的OB实验模型.
苏州市烧伤医疗资源调查分析

烧伤是最常见的意外伤害之一.随着经济的发展和人民生活水平的提高,我国许多地区烧伤的发病率明显降低.但是地处全国经济最活跃的苏南地区以及作为新兴制造业基地,苏州市近几年来的烧伤发病率却呈上升趋势.2006年全市发生火灾2638起,同比上升18.24%,现场死亡9人;2007年发生火灾1183起(同比降低),现场死亡31人、伤11人(同比增加),直接经济损失1068.32万元(同比上升17.26%).
颅内肿瘤影像学分析的重要性

影像学方法的恰当应用以及将影像学技术与其他新技术的融合,对神经系统肿瘤的诊断、鉴别诊断、治疗方案的选择和疗效的评价具有重要意义.在选择影像学检查时首先要对各种不同检查方法的优缺点有所了解.如CT对骨性病变(包括钙化)显示优于NRI,但后颅窝结构常常因为伪影而显示不清,且有X线暴露的潜在风险.MRI虽然成像质量优越,但费时较多,颅内有金属物时检查受限.
颅底腺样囊性癌(附四例报告)

南京军区南京总医院神经外科自2005年8月至2007年8月共收治4例颅底腺样囊性癌(adenoid cystic carcinoma,ACC)患者,术前误诊为脑膜瘤、脊索瘤、血管外皮瘤、鼻咽癌、颅底骨软骨瘤等,经术后病理检查明确诊断.现结合文献探讨4例颅底腺样囊性癌的临床特点.
规范诊治低位直肠癌以进一步提高疗效

近年来我国低位直肠癌的诊治已经取得了长足的进步,TME技术和微创手术较广泛开展,保肛率明显上升,短期及长期疗效获得显著提高~[1-3].但不可否认我国和世界先进水平相比还存在不小的差距,其中低位直肠癌诊治规范化问题尤为突出.
特发性骨髓纤维化患者JAK2V617F和MPLW515L点突变及JAK2外显子12突变的研究

特发性骨髓纤维化(IMF)为慢性骨髓增殖性疾病(CMPD)的一种,缺乏特异性诊治.现在研究表明近一半的IMF患者存在JAK2V617F点突变,另外,MPLW515突变及JAK2外显子12突变的发现提示MPD除了JAK2V617F点突变以外存在其他的发病机制[1].本研究应用等位基因特异性-聚合酶链反应(AS-PCR)及基因测序检测30例IMF患者的JAK2V617F、MPLW515L点突变及JAK2外显子12突变,了解其在IMF患者中的发生情况.
功能性消化不良的再认识——罗马Ⅲ标准解读

功能性消化不良(FD)是常见的功能性胃肠病(FGIDs).近年来,随着神经胃肠病学、功能性影像学、心理学以及受体药物学的进展,对FGIDs的认识已进入了一个新的时代,FD从罗马Ⅰ到罗马Ⅲ标准不断更新的修订之路正反映了这一认识历程.罗马Ⅲ标准有关FD定义、分型、诊断及治疗等均有较大改动并注入了许多新的理念.
颈动脉窦过敏综合征麻醉处理1例

患者,男性,62岁,体重63.5 kg,因反复头痛、晕厥半年,咽痛3月入院.查体:体温36.5℃,血压(BP)170/100 mm Hg(1 kPa=7.5 mm Hg),心率(HR)70次/min,呼吸频率(RB)20次/min;双肺呼吸音清,心脏听诊律整,未闻及杂音;血常规、电解质、肝功能、心肌酶学指标未见明显异常;心电图,超声心动图未见异常;既往史、家族史无异常.
膝关节内侧半月板后角止点撕脱骨折和半月板小骨二例报告

本文报告膝关节内侧半月板后角止点撕脱骨折和半月板小骨(meniscal ossicle)各1例.结合尸体解剖研究及文献综述,我们认为内侧半月板后角半月板小骨的成因可能为陈旧性内侧半月板后角止点撕脱骨折、半月板损伤后的异位骨化及籽骨.本文2例关节镜术中均未对半月板小骨进行处理,预后良好.
蛋白糖基化改变与类风湿关节炎发病关系研究进展

类风湿关节炎(rheumatoid arthritis,RA)是一种以慢性多关节炎症为主要表现的全身性自身免疫性疾病,发病机制复杂,目前认为主要与人类白细胞抗原DR4基因(HLA-DR4)相关遗传因素、瓜氨酸化现象、调节性T细胞等因素有关~([1]),同时也与免疫球蛋白IgG的末端半乳糖残基丢失密切相关.新的研究也进一步证实,RA中除半乳糖残基的改变外,还存在其他蛋白质的多种糖基化改变.说明蛋白糖基化改变在RA发病中发挥着重要作用.
超声诊断冠状静脉窦型无顶综合征并法洛四联症1例

患儿男,6个月,主因"查体发现心脏畸形半年"入院.查体:心界大,胸骨左缘3、4肋间可闻及收缩期Ⅲ/6级喷射性杂音.超声心动检查:心房正位,心室右袢,右心房室增大,房间隔近冠状静脉窦口处缺失6 mm,室间隔膜周至室上嵴回声缺失13 mm,主动脉增宽骑跨于室间隔上,骑跨率约40%,右室前壁至室上嵴处可见粗大异常肌束;肺动脉瓣增厚粘连,回声增强,开放受限,连续多普勒测最大前向血流速度为3.1 m/s,压差39 mm Hg(1 mm Hg=0.133 kPa);主肺动脉及左右肺动脉发育良好;三尖瓣前叶轻度脱垂,彩色多普勒显示三尖瓣轻度反流;胸骨上凹主动脉横切面可见永存左上腔静脉入左心房,左心房后下与冠状静脉窦处回声缺失16 mm,彩色多普勒示蓝色血流信号自左心房→冠状静脉窦→右心房.
无脊髓损伤胸腰椎骨折的治疗选择

胸腰椎骨折是一种临床常见的脊柱损伤,其中大部分合并有脊髓损伤,也有部分患者无脊髓损伤.据我院资料统计,无脊髓损伤的胸腰椎骨折约占整个胸腰椎骨折的33.7%.
下尺桡关节的解剖学及生物力学研究进展

下尺桡关节(distal radioulnar joint,DRUJ)是低等动物向高等动物进化的标志之一,是由单纯的韧带联合性负重关节进化成的高度灵活的滑膜关节.它使人手脑之间功能进一步协调,使之得以控制生存环境和使用工具~([1]).
Magneto-optical and Microwave Properties of LuBiIG Thin Films Prepared by Liquid Phase Epitaxy Method from Lead-Free Flux

Lu_(2.1)Bi_(0.9)Fe_5O_(12) (LuBiIG) garnet films are prepared by liquid phase epitaxy (LPE) method on gadolinium gallium garnet (GGG) substrates from lead-free flux. Three-inch single crystal garnet films with (444) orientation and good surface are successfully fabricated. The lattice mismatch to the GGG(111) substrate is as small as 0.08%. The ferromagnetic resonance (FMR) linewidth of the film is 2ΔH = 2.8-5.1 Oe, the Faraday rotation is 1.64deg/μm at 633nm at room temperature and the optical absorption coefficient of the film is 600cm~(-1) in visible range and about 100-170cm~(-1) when the wavelength is larger than 800nm. The epitaxy film possesses dominating in-plane magnetization with a saturation magnetization of about 1562G. These superior optical, magnetic-optical (MO) and microwave properties of our garnet films have potential applications in both MO and microwave devices.
Water Transport through Multinanopores Membranes

We investigate the influence of correlation between water molecules transport through the neighbouring nanopores,whose centres are at a distance of only 6.2A,using the molecular dynamics simulations.Water molecule distribution in nanopore and average water flow are obtained.It is found that the average water molecule number and water flow are slightly different between a system made of the neighbouring nanopores and a system of a single pore.This indicates that transport of water chains in neighbouring pores do no show significant influence each other.These findings should be helpful in designing efficient artificial membrane made of nanopores and providing an insight into effects of the biological channel structure on the water permeation.
A Parallel Study on (BN)_n and (HA1NH)_n (n=11-22) Clusters:Geometry and Stability

A parallel study on (BN)_n and (HA1NH)_n (n=11-22) clusters is presented herein with ab initio HF/6-31G* method. Two types of structures,i.e. cage-like and needle-shaped,are constructed. The calculated results indicate that the classical cage-like geometry is energetically more favourable for (BN)_n while the needle-shaped (HA1NH)_n structures are more stable than their cage-like counterparts.It is suggested that the nanostructures with higher structural similarity to the corresponding bulk phases possess greater stability.This idea leads to the viable way to intercept segment from bulk materials to construct models for theoretical study of complex nanostruct ares.