mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Correlation between discharging property and coatings microstructure during plasma electrolytic oxidation

The voltage-current properties during plasma electrolytic discharge were determined by measuring the current density and cell voltage as functions of processing time and then by mathematical transformation. Correlation between discharge I-V property and the coatings microstructure on aluminum alloy during plasma electrolytic oxidation was determined by comparing the voltage-current properties at different process stages with SEM results of the corresponding coatings. The results show that the uniform passive film corresponds to a I-V property with one critical voltage, and a compound of porous layer and sintered ceramic particles corresponds to a I-V property with two critical voltages. The growth regularity of PEO cermet coatings was also studied.
Effect of viscosity on material behavior in friction stir welding process

Temperature-dependent elastic viscoplastic material model was used for the numerical simulation of the friction stir welding process. The non-elastic response of the rate-dependent material in the large deformation problems was calculated by using the closest point algorithm. The numerical results show that the shape of the equivalent plastic strain looks like onion rings and the spacing of the rings is approximately equal to the forward movement of the tool in one rotation. The equivalent plastic strain is increased with the increase of viscosity coefficient due to the increase of friction stress in the pin-plate interface. The region which is influenced by the rotating tool is decreased with the decrease of viscosity coefficient. The radial and circumferential stresses in front of the pin are greater than the ones behind the pin. This difference can be reduced with the decrease of viscosity.
Formation of integral fins function-surface by extrusion-ploughing process

An extrusion-ploughing process was presented to fabricate the integral fin function-surface. Cutting edge inclination angle and rake angle can be calculated from the tool's geometry relationship. The description of fins' geometry characters was standardized. The experiments show that, when the middle cutting edge's inclination angle η is less than 35°, continuous fin will come out; when η is between 35° and 55°, the fins will be saw-tooth ones, and the fins will be torn when this angle is above 55°; when the extrusion angle θ is between 60° and 150°, the fins will appear, or else, the fins will be torn into chips from the base. Forming angle and clearance angle have little effect on fin's formation. For continuous fin, its height is close to cutting depth when it is small, but it will become approximately constant as cutting depth grows; for saw-tooth fins, the width, the height, as well as the clearance will increase with the increase of cutting depth, but the increment of clearance is small; neither for continuous fin, nor for saw-tooth ones, cutting velocity has little influence on their structure parameters.
Preparation of AZ91D magnesium alloy semi-solid billet by new strain induced melt activated method

New strain induced melt activated (new SIMA) method for preparing AZ91D magnesium alloy semi-solid billet is introduced by applying equal channel angular extrusion into strain induced step in SIMA method, by which semi-solid billet with fine spheroidal grains and average grain size of 18 μm can be prepared. Furthermore, average grain size of semi-solid billet is reduced with increasing extrusion pass of AZ91D magnesium alloy obtained in ECAE process. By using semi-solid billet prepared by new SIMA, thixoforged magazine plates component with high mechanical properties such as yield strength of 201.4 MPa, ultimate tensile strength of 321.8 MPa and elongation of 15.3%, can be obtained.
Liquid phase separation of Cu-Cr alloys during rapid cooling

The ribbons of Cu-Cr alloys with high Cr content (15%-35%, mass fraction) were prepared by rapid solidification. The microstructures of solidified samples, were analyzed by scanning electron microscopy and transmission electron microscopy. The results reveal that a representative liquid phase separation microstructures are observed in Cu75Cr25 ribbons solidified at a cooling rate of about 104K/s. The liquid phase separation is not restrained when the cooling rate is enhanced to about 107K/s. However, the size of Cr particles solidified from Cr-rich liquid or Cr-rich regions in alloy melts could be refined by increasing the cooling rates. The size of Cr particles increases with increasing Cr contents when the ribbons contain 15% to 35%Cr.
涂阳肺结核745例转归分析

0 引言自1996年河南省开封市采取了由市结核病防治所医师直接对患者进行防痨宣教并确定、培训和指导督导点的办法落实结核患者的督导管理。为评价此策略的效果和项目方案的近远期疗效，对我所治疗管理的745例新发涂阳肺结核患者治疗转归情况进行了分析。
超声引导下自凝刀射频治疗子宫肌瘤及功血

子宫肌瘤和功能性子宫出血一直是妇产科的常见病、多发病，在育龄妇女中的发病率分别为20％和30％，绝经前期功血发病率达50％，近年，在众多的介入治疗方法中，自凝刀射频介入治疗子宫肌瘤及功血，以其对靶器官治疗的绝对微创为特色已得到公认，我们2002-11开展了超声引导下自凝刀射频治疗子宫肌瘤和功血以来，已治疗108例子宫肌瘤和63例功血，收到满意疗效．
颈部皮肤软组织扩张术56例的围手术期护理

1临床资料 本组患者56（男35，女21）例，年龄8。49岁，均为烧伤后颈部瘢痕增生需要整形的患者．应用扩张器共91个，其中应用一个扩张器30例，多个扩张器26例（2。5个）．扩张器容积为50—500mL，手术分二期实行．一期手术是将扩张器埋入颈部或颈侧皮下浅筋膜深面，术后常规扩张，达到预期效果后行二期手术．二期手术是切除需整形部位的瘢痕，用扩张后额外的皮肤修复．
超声诊断子宫肌瘤钙化1例

1、病例报告 女，75风貌，常规体检就诊进行B超，彩超及CT检查，既往无异常病史，停经20a，无明显临床体征，有长期服用钙剂史，应用西门子Adra-LC型超声诊断仪，使用中心频率3.5MHz电子凸阵控头，膀胱充盈，经腹壁扫查，超声诊断为盆腔内3.0cm×3.2cm实性包块，建议进一步检查，随后应用西门子Sequoia512型彩超仪，中心频率3.5MHz电子凸阵探头进行常规经腹扫查。
新烟区烤坏烟原因分析

南陵县作为新启动的烟区。烘烤技术相对薄弱，严重影响了烟叶烘烤质量。调查表明。烤坏烟主要表现有挂灰烟、蒸片、黑糟烟、青黄烟、洇筋、涸片、烤红等。从烘烤角度看。原因主要有烟叶采收成熟不够，烘烤枝术掌握不当，烤房的结构或性能不良等。
中西医结合治疗蛋雏鸡大肠杆菌病的研究

使用自拟复方中草药对山东省临沂市不同地方的8起蛋雏鸡大肠杆菌病进行了临床中西医结合治疗试验。结果表明：在用药后停止死亡时间上中西医结合组比西药组早2．37d，在鸡群恢复正常时间上早3．18d，在死亡率上低3．6％，在有效率上高3．6％。
波姬红无花果茎段离体快繁研究

波姬红无花果茎段快繁中，以MS＋BA1．0mg／L＋NAA0．2mg／L＋糖30g/L＋琼脂7g/L为分化和增殖培养基，分生倍数可达9以上；以1／2MS＋IBA0．5mg／L＋糖20g/L＋琼脂7g／L为生根培养基，生根率可达90％；试管苗移栽成活率达85％以上，移栽前期保温保湿是提高成活率的关键。
果桑主栽品种“大白鹅”的组织培养与快速繁殖研究

以果桑“大白鹅”的茎及茎尖为外植体，在诱导及增殖培养基（MS＋6-BA1mg／L＋NAA0．1mg／L）、生根培养基（1／2MS＋IBA1mg／L）上，成功地实现了果桑“大白鹅”组织培养和快速繁殖。
35kV简易母线保护动作分析

对某110kV变电站35kV简易母线保护动作原因进行了详细分析，并通过现场试验查证了简易母线装置的动作逻辑，找出了保护逻辑所存在的问题，提出了改进措施，旨在能更好地完善简易母线保护的运行和维护，具有一定的现实意义。
贵州省植烟土壤氮素释放特征研究（Ⅲ）——不同栽培措施对黔南烟区烤烟质量的影响

烤烟生长后期土壤氮素供应不同将导致烤烟上部叶品质差异，试验表明，不同处理的上部叶总氮和烟碱含量差异显著，提前起高垄深移栽盖膜处理上部叶总氮和烟碱含量最接近优质烤烟标准。
应用差异凝胶电泳对卵巢癌顺铂化疗耐药的蛋白组学研究

卵巢癌的死亡率高居妇科恶性肿瘤之首，其主要原因为早期诊断较为困难，确诊时临床期别较晚及化学治疗（化疗）耐药等，以顺铂为主的联合化疗仍是卵巢癌术后的主要辅助治疗手段，如何克服或预防耐药成为肿瘤治疗研究的热点。随着后基因组时代的到来及蛋白质组学理论及技术的迅速发展及完善，从蛋白质这一全新的角度探讨卵巢癌的顺铂耐药机制已成为可能。本研究采用差异凝胶电泳（DIGE）技术比较分析了卵巢癌顺铂敏感株（COC1）及耐药株（COC1／DDP）的差异蛋白，期待找到与顺铂耐药相关的关键分子。
巨噬细胞活化综合征的研究进展

巨噬细胞活化综合征（MAS）是儿童慢性风湿性疾病的致命性并发症，多见于全身型幼年特发性关节炎（JIA）。以肝脾大、淋巴结肿大、全血细胞减少、肝功能异常、弥散性血管内凝血（DIC）和中枢神经障碍为特征性表现，骨髓病理显示有大量分化良好的巨噬细胞吞噬血细胞现象。近期研究表明，MAS的发病与T淋巴细胞和巨噬细胞增生活化失控及NK细胞穿孔素（perforin）编码基因突变所致的细胞毒功能下降相关。对MAS发病机制的深入认识，有助于确定更好的治疗方案，改善患者的预后。
MRI相位对比法评估门静脉流量指标在乙肝慢性肝病中的应用

慢性肝炎、肝硬化是严重影响人类健康的疾病，慢性肝病影像学研究以往着重于大体形态学方面，磁共振功能成像的研究做的不多，相位对比法（phase contrast，PC）评估门静脉流量的研究以及与肝纤维化血清标志物（被许多肝纤维化方面的专家认为是和肝脏穿刺活检“金标准”一样好的工具）的对照研究更是鲜见报道。本研究对乙肝慢性肝病患者应用相位对比法测量门静脉流量指标，并与血清肝纤维化标志物作初步对照、分析，以验证相位对比法门脉流量指标的诊断性能。
搁置争议积极实践：代谢综合征的争议与共识

代谢综合征（metabolic syndrome，MS）是近年来国内外医学界关注的热点，其主要特征为多重代谢危险因素聚集，主要的病理生理机制涉及腹型肥胖和胰岛素抵抗（IR）等，主要临床后果为动脉粥样硬化性心血管病（ASCVD）和2型糖尿病，但有关MS的定义、诊断标准、发病机制和防治措施也一直是学术界的非共识问题。2005年4月国际糖尿病联盟（IDF）提出代谢综合征全球共识定义后，同年9月美国和欧洲糖尿病协会（ADA／EASD）对MS的定义和临床应用提出质疑，同月，美国心脏协会和美国国立卫生院心肺血液研究所（AHA／NHLBI）则发表声明，确认和建议继续应用MS定义。
呼吸机相关肺损伤早期胶原表达机制的研究

肺纤维化是急性呼吸窘迫综合征（ARDS）后期常见的病死原因之一。近来研究显示，小潮气量（VT）通气可降低ARDS病死率。但机械通气对肺纤维化的影响尚不明确。胶原合成增加是肺纤维化的主要特征。过氧化物酶体增殖活化受体γ（PPAR-γ）是核激素受体蛋白超家族成员之一，主要分布于脂肪组织、肺组织和免疫系统等。核因子κB（NF—κB）是调节各种细胞因子、趋化因子、生长因子和细胞黏附基因表达的一个重要的转录因子。目前有研究显示，NF—κB和PPAR-γ调节肝脏和胰腺等组织的胶原合成，进而参与纤维化的调控，但是对肺纤维化的影响尚未见报道。本实验以高VT机械通气复制呼吸机相关性肺损伤模型，观察不同VT对大鼠肺胶原合成的影响及可能的机制，为机械通气在ARDS中的合理应用提供实验依据。
既往发生过短暂性脑缺血或者小型卒中的患者大脑出血的风险预测

欧盟国家每年大约有100万人发生脑卒中,其中脑缺血性卒中占80%,脑出血占15%,蛛网膜下腔出血占5%.其中短暂性脑缺血发作（TIA）第1年后脑卒中发生率大概12%,因此抗凝药物和抗血小板聚集药物被应用于预防脑卒中的发生。
Wernicke脑病MR随访一例

患者男，41岁，因精神意识障碍1d会诊。7d前行食管癌手术。体格检查：嗜睡，表情淡漠，有答非所问、虚构、双眼外展不全伴自发眼震，指鼻及跟膝试验准稳，肌力Ⅴ级，站立不稳，无病理征。
农业职教为农业经济服务的现状分析与对策

通过对我国农业职教和农业经济运行情况的剖析，用系统观点揭示出农业职教与农业经济之间被分割为两个独立的子系统，尊明现行农业职教为农业经济服务不利的根源是两者之间的负熵流交换。因此，一方面，要使农业职教与农业经济相适应。另一方面，要使农业职教与农业经济形成互动体系，采取有力措施发展农业职教，促进农业经济发展。
高密度培养重组菌生产鸡传染性支气管炎DNA疫苗

目的：高密度、高质粒拷贝数培养工程菌生产重组DNA疫苗pCDNA-M。方法：应用20L自控发酵罐，采用补料分批培养技术，控制补料的补加使溶氧控制在30％～60％，pH值控制在7左右。结果：重组菌E．coli JM109／pCDNA-M发酵液OD600达到45。经纯化后最终质粒DNA得率为100mg/L，质粒没有发生丢失现象。结论：该实验为禽传染性支气管炎DNA疫苗的大规模生产奠定了基础。
灌后覆膜及组合技术在旱地玉米栽培中的应用

应用灌后覆膜技术栽培玉米解决了春旱播种难问题，并收到了较好的社会效益、生态效益和经济效益。为了解决夏季干旱影响玉米稳产高产的问题，对灌后覆膜技术与双垄沟覆膜集水技术组合在一起应用于旱地玉米栽培进行探讨。
大豆三系杂交组合的优势研究

利用现有不育系和恢复系人工组配杂交组合20个，并对其进行杂种优势测定和育性的稳定性鉴定。结果表明：参试杂交组合的竞争优势率在-30．3％-64．1％，变幅较大，其中有5个组合的优势率超过30％，且育性稳定，对当地适应性强，应用于生产的可能性较大。单株有效分枝数、单株有效结英数和粒数等性状优势明显，但对杂交组合的竞争优势率的影响不确定，而单株粒重对各组合的竞争优势率起着决定作用。
2005年6月27日皖江流域特大暴雨过程分析

利用高空观测气象资料和T213分析资料对2005年6月27日皖江流域特大暴雨过程进行了天气学和动力学诊断分析。结果表明：500hPa西风带低槽东移南下，西太平洋副热带高压增强北抬，冷暖空气在皖江流域汇合；高、低空急流分别在章丘和安庆附近；从印度洋北部经南海到皖江流域为水汽输送带；中低层处于对流性不稳定状态。特大暴雨就是在上述有利天气形势下产生的。
强化栽培条件下氮肥施用技术探讨

在强化栽培条件下，氮肥施用技术对产量影响较大。减少基肥和分蘖肥的氮肥用量，可有效减少无效分蘖，控制群体过大；增加穗肥的氮肥用量，能提高成穗率，攻取大穗，是实现高产的重要途径。
优质抗病粳稻新品种种植比较

通过对引进的4个杂交粳稻、8个常规粳稻品种种植比较试验。筛选、推介出适宜皖东地区推广种植的Ⅲ优98、天协1号（CK）、徐优201、盐粳9号、扬粳9538等5个优质高产抗病粳稻新品种。
月季切花衰老机理研究进展

月季切花衰老与采后的水分代谢、呼吸代谢、细胞内膜及膜脂过氧化、细胞内合物的降解等因素密切相关，且各个影响因素相互联系、共同作用。综述了月季切花衰老机理的研究进展。
正常人与冠心病患者太溪穴红外辐射光谱研究

1 对象及方法1．1 对象的选择健康成年人47例，自愿参加检测者；其中男25例，女22例；年龄最小38岁，最大64岁，平均年龄50．6岁。正常人的选择按如下标准纳入：（1）身体健康，无心、肝、肾、脑等严重躯体疾病史，无精神疾病史；（2）受试者依从性好，自愿参加检测者。
大疱性表皮松解型药疹的临床分析

大疱性表皮松解型药疹属皮肤科的急重症。1995-2004年，我们收治了哈尔滨市及周边其他市县的大疱性表皮松解型药疹患者40例，应用综合治疗手段，取得了较为满意的疗效，现将临床经验总结如下。
环状红斑样蕈样肉芽肿一例

患者女，35岁。因全身皮疹5年，加重1年，于2005年7月入院治疗。5年前于感冒后右腰部和双腿出现丘疹，无明显症状，后渐向周围扩大呈环形，在当地医院诊断为玫瑰糠疹，副银屑病。
白介素20 mRNA在寻常性银屑病患者皮损中的表达

有研究表明，白介素20（IL-20）是介导银屑病发生的重要细胞因子之一。为探讨IL-20mRNA与寻常性银屑病发病之间的关系，我们采用原位杂交技术检测寻常性银屑病患者皮损和正常人皮肤组织中IL-20mRNA表达情况。
口服特比萘芬、伊曲康唑和氟康唑治疗甲真菌病随机对照Meta分析

甲真菌病的治疗必须有足够的疗程，等到新甲长出才能认为治疗成功，患者的治疗费用较高，故采用安全、有效、经济的治疗方案尤为重要。近年对特比萘芬、伊曲康唑和氟康唑治疗甲真菌病进行了大量随机对照临床研究。本文对特比萘芬、伊曲康唑和氟康唑治疗甲真菌病的随机对照研究进行系统评价。
气相色谱-质谱选择离子法评价系统性念珠菌感染与尿液中D／L阿拉伯糖醇比值的关系

真菌代谢产物的检测在深部真菌感染诊断上的重要意义正成为近年关注的热点。阿拉伯糖醇是真菌代谢产物之一，与系统性念珠菌感染关系密切。它包括两种同分异构体：D-阿拉伯糖醇（D—arabinit01）和L-阿拉伯糖醇（L—arabinit01）。两者均可存在于正常人血液和尿液中，其中D-阿拉伯糖醇是大多数念珠菌的主要代谢产物。在系统性念珠菌感染时，血、尿中D-阿拉伯糖醇浓度会增高，L-阿拉伯糖醇并无明显增高，所以D／L-阿拉伯糖醇比值相应增高，可作为预测系统性念珠菌感染的一个指标。本研究采用气相色谱-质谱选择离子法检测系统性念珠菌感染和疑似感染者尿液中的D／L-阿拉伯糖醇比值．探讨临床系统性念珠菌感染与尿液中D／L-阿拉伯糖醇比值的关系。
以低血钾为首发症状的原发性醛固酮增多症四例

原发性醛固酮增多症（PA）是以高血压伴低血钾、血浆肾素活性降低、醛固酮水平增高为特征的临床综合征.PA多以高血压为首发症状,而以低血钾为首发或惟一表现的PA较少,现将我院近年来发现的4例报道如下.
第47届美国血液学年会纪要

美国第47届血液学年会于2005年12月10—13日在美国佐治亚州亚特兰大举行。来自世界各地的18500名代表参加了会议。本届年会包括14个科学专题会议，27个教育会议和20个特别专题会议。大会共收到有创新、有科学价值的基础医学与临床研究论文5593篇，其中842篇在会议上做口头报告，另有2960篇论文以壁报的形式交流。现将会议主要内容介绍如下。
内科住院患者静脉血栓栓塞的预防

临床资料已经证实静脉血栓栓塞是住院患者常见的病变和重要的死亡原因。静脉血栓栓塞一经明确诊断往往可以得到充分重视和及时治疗，在外科住院患者特别是手术后患者静脉血栓栓塞的预防也已经得到广泛重视和有效治疗。然而，在内科住院患者中静脉血栓栓塞的预防还远远没有得到足够的重视，原因可能一是内科住院患者病情较外科患者复杂，难以及时识别高危静脉血栓栓塞患者；二是成功预防内科住院患者静脉血栓栓塞的循证医学资料不如外科患者的多，还没有被内科医生们普遍接受。鉴于此，现将内科住院患者静脉血栓栓塞的发生率、危险度识别、预防治疗的疗效及方法进行综述。
以肾病综合征为表现慢性移植物抗宿主病一例

患者男，31岁。因尿中泡沫增多20d，颜面、双下肢水肿1周，于2004年9月5日入院。既往于2003年6月体检发现急性非淋巴细胞性白血病（M2b型），经化疗后病情缓解。患者于2004年2月26日行异基因骨髓移植（供体为其哥哥），术后服环孢素A（CsA）治疗，CsA25mg／d。入院体检：T37．2℃，BP90／55mmHg（1mmHg=0．133kPa）。皮肤、黏膜无皮疹、黄疸、出血点，浅表淋巴结无肿大。
既往有偿献血（浆）人群中艾滋病毒与丙型肝炎病毒共感染研究

我们通过对我国中部地区90年代中期因有偿献血感染人类免疫缺陷病毒（HIV）的300例患者的血液标本进行HIV、丙型肝炎病毒（HCV）的血清学和分子生物学检测，了解有偿献血HIV感染人群的HCV共感染率、共感染者流行病学和基因型分布特征。
头颈部皮肤恶性黑色素瘤研究新进展

头颈部皮肤的面积仅占全身表面积的9%,而头颈部原发性皮肤黑色素瘤(Cutaneous malignant melanoma,CMM)大约占全身黑色素瘤的25%～30%[1].本文就头颈部CMM的发病危险因素、术前检查、治疗以及随访复查等方面的近期进展作以下综述.
HPLC测定栽培甘草中甘草苷的含量

甘草中除三萜类为有效成分外，其黄酮类成分具有抗氧化、抗病毒、抗炎、抗溃疡作用。因此作者对栽培于内蒙古杭锦旗、赤峰，甘肃酒泉不同生长年限甘草中黄酮类成分甘草苷的含量进行了测定，了解不同生长年限的人工栽培甘草中黄酮类成分含量变化规律，以指导人工栽培甘草的合理生产、应用。同时也对不同商品等级野生甘草中的甘草苷进行了含量测定，以便与栽培甘草进行对照。
牛黄降压胶囊治疗偏头痛的临床观察

偏头痛为临床常见病、多发病，西医常采用对症止痛治疗，复发率高。笔者自1997年1月以来，应用牛黄降压胶囊治疗肝火旺盛型偏头痛200例，并与西比林治疗的120例作对照比较，现报告如下。
毛脉酸模次生代谢产物动态特征及其与环境因子的相关性分析

植物的次生代谢是植物在长期进化中与环境相互作用的结果，其产生和变化比初生代谢产物与环境有着更强的相关性和对应性。关于植物次生代谢产物与环境关系的探索和阐明，既有利于提高资源植物生物工程的效率和质量，也有助于传统中药药源植物的标准化和目标化种植。
舒冠宁片剂药效学的试验研究

舒冠宁片是由丹参、红花、桃仁等组成的中药复方制剂，具有活血化瘀、行气止痛等功效。临床用于治疗冠心病、心绞痛、心血管供血不足等有一定疗效。为研究舒冠宁的作用机制，本研究进行了与其功能主治相关的药效学试验。
石菖蒲临床应用一得

石菖蒲载于《本经》之首，谓其有“主风寒湿痹，咳逆上气，开心孔，补五脏，通九窍，明耳目，出音声”。其味辛性温，有馨香弥渗之气，具行散开豁之力，芳香化湿、醒脾健胃，化浊祛痰、益心宁神，为宣痹通络，聪耳开窍之要药。历代医家用之治癫痫、痰厥、热病神昏、健忘、中风失语、耳鸣骤聋，气闭耳聋，心胸烦闷，胃痛，腹痛，风寒湿痹，痈疽肿毒，跌打损伤等疑难病症。笔者常于临床用其为主药随症辨证施药，石菖蒲确有定志宁神，益智醒脑，通关复苏之效，所治疑难痼疾之有效配伍简叙如下。
HPLC测定养血颗粒中2，3，5，4′-四羟基二苯乙烯-2-O-β-D葡萄糖苷的含量

养血颗粒由制何首乌、枸杞子、熟地黄、山楂、桑寄生、杜仲等中药组成，具有养血调脂、补肝益肾的作用，用于治疗肝肾精血亏虚、头晕、须发早白、高血脂等症疗效显著。养血颗粒中2，3，5，4′-四羟基二苯乙烯-2-O-β-D葡萄糖苷具有降血脂的作用，并对蛋白激酶C活性有一定的抑制作用，是其主要有效成分之一。为控制本品的质量，作者参照文献，采用HPLC测定了养血颗粒中2，3，5，4′-四羟基二苯乙烯-2-O-β-D葡萄糖苷的含量。
关于异丙嗪在儿童喘息性疾病中应用的讨论

我刊2005年第7期“专家释疑”中,董宗祈教授就小儿喘息性疾病能否常规应用异丙嗪的问题发表了意见,以后本刊又收到多位读者来信,对其中的观点提出疑问,今本刊又请董宗祈教授作了答复.读者-作者之间的切磋、交流,既体现了本刊的办刊宗旨,又体现了一种学术民主.有关异丙嗪在儿科的应用，2005年1月，美国食品药品管理局曾发出警示，报告曾有2岁以下小儿使用异丙嗪出现呼吸抑制甚至死亡的报告。建议对2岁以下小儿不宜使用，并在说明书中加了警示语，对处方信息的剂量和用法部分作了修改，这条信息可作为临床医生的参考。当然，任何药物的不良反应常与使用剂量和方法有关，也与个体差异相关，如何发挥有效的药理作用，尽可能避免不良反应，是每个医师的职责所在。因此，提倡在实践中学习，在临床工作中提高。
褪黑素对新生大鼠缺氧缺血性脑损伤保护作用的实验研究

褪黑素（melatonin,MT）是松果体腺分泌的一种吲哚胺类激素,近年研究发现它的强大氧自由基清除作用对脑缺血损伤、癫癎发作、外周神经损伤等多种神经系统疾病有保护作用,但在新生大鼠缺氧缺血性脑损伤（HIBD）的作用还少见报道.2004年3月至12月我们进行了MT对新生动物缺氧缺血性脑损伤保护作用的研究,报道如下.
特巨大型游离型腰椎间盘突出症一例报告

患者 男，56岁，因腰痛伴双下肢麻痛1个月入院。患者发病前有腰部扭伤史，保守治疗效果欠佳；入院前1d出现大小便困难，但仍可自主排尿（便）。查体：跛行，腰明显右侧凸，L4棘突压痛、叩击痛，双侧旁开约1.5cm处有压痛，并向双下肢放射。
重症肌无力与神经心理损害

重症肌无力（myasthenia gravis,MG）是一种神经-肌肉接头乙酰胆碱传递障碍的自身免疫性疾病.传统上认为MG不会累及中枢胆碱能传递系统,但一些研究证明MG病人除肌无力外还有认知功能、情感、睡眠、精神等方面的障碍,提示中枢神经系统可能受累.
High-resolution Surface Relative Humidity Computation Using MODIS Image in Peninsular Malaysia

Forest fire is a serious disaster all over the world. The Fire Weather Index (FWI) System can be used in applied forestry as a tool to investigate and manage all types of fire. Relative humidity (RH) is a very important parameter to calculate FWI. However, RH interpolated from meteorological data may not be able to provide precise and confident values for areas between far separated stations. The principal objective of this study is to provide high-resolution RH for FWI using MODIS data. The precipitable water vapor (PW) can be retrieved from MODIS using split window techniques. Four-year-time-series (2000-2003) of 8-day mean PW and specific humidity (Q) of Peninsular Malaysia were analyzed and the statistic expression between PW and Q was developed. The root-mean-square-error (RMSE) of Q estimated by PW is generally less than 0.0004 and the correlation coefficient is 0.90. Based on the experiential formula between PW and Q, surface RH can be computed with combination of auxiliary data such as DEM and air temperature (Ta). The mean absolute errors of the estimated RH in Peninsular Malaysia are less than 5% compared to the measured RH and the correlation coefficient is 0.8219. It is proven to be a simple and feasible model to compute high-resolution RH using remote sensing data.
Cloning and expression of Hsp22.4 gene from Chaetomium globosum

A study was conducted on the molecular mechanism of small heat shock proteins (sHSPs) in Chaetomium globosum. Heat shock protein 22.4 (Hsp22.4) from C. globosum was cloned and expressed in Escherichia coli. BlastX analysis revealed that the Hsp22.4 gene from C. globosum shared the highest identity in amino acid sequence with a Hsp gene from Neurospora crassa, and the identity between them was 65%. The C. globosum Hsp22.4 gene was inserted into the expressive vector of pGEX-4T-2 and the recombinant plasmid named pGEX-HSP. E. coli BL21 transformed with pGEX-HSP plasnid was induced by IPTG, and the expressed proteins were analyzed with SDS-PAGE. A 50 kD protein was specially expressed in E. coli BL21, and the result was consistent with expectation, and showed that the Hsp22.4 gene had been expressed in E. coli. Our study has made a foundation for further studying the function of sHSPs protein.
Determination of forest soil organic nitrogen determination using technique of X-ray absorption near-edge structure

The forest soil organic N was investigated using N K-edge X-ray absorption near-edge structure (XANES) to gain an insight into the relationship between N speciation and its transformation in quantity. Soil samples were collected from spruce, hemlock and pine forests in central Taiwan. Results showed that various organic N types could be revealed by XANES spectra. Amide and pyrrolic N are the major parts of the composition in the humic substance, soluble organic nitrogen and original soils. The relative distribution of N speciation differed in treatments and vegetations samples. The spruce had a significant difference from the hemlock in soluble organic nitrogen (SON) spectra at 402.3 eV energy peak. In the A-horizon soils, the relative amount of pyridinic N was much higher than that in the O-horizon soils, indicating N transformation in quantity in the mineral horizon was different from that in the organic horizon, which might play an important role in N cycling of forest ecosystems.
Anatomical adaptations of three species of Chinese xerophytes (Zygophyllaceae)

Secondary xylem characteristics and horizontal variations were described in three xerophytic species, Zygophyllum xanthoxylon,Nitraria tangutorum, Tetraena mongolica of Zygophyllaceae native to western China. All the species have obvious growth ring boundaries except sometimes discontinuous in T. mongolica and Z. xanthoxylum ring to semi-ring-porosity; simple perforation plate; alternate intervessel pitting; non-septate fibres; paratracheal confluent axial parenchyma; helical thickenings and heterocellular rays. However the vessel arrangement and quantitative features of vessels were different. Vessel elements tend to be shorter and narrower and more frequent in T.nongolica than in other two species that are hardly different could lead to greater conductive safety. The variation of vessel element length and fibre length along radial direction showed irregular tendency. There was significant difference in both fibre length and vessel element length among-tree and within-tree. Furthermore, the relationships between anatomical features and adaptability to desert environments were also discussed.
Dynamics of Zn between soil and plant in Northeast Leymus chinensis grassland

A study was conducted to determine the dynamic of Zn content between soil and plant in the natural protection zone of Leymus chinensis grassland in Changling County (44°30′-44°45′N; 123°31′-124°10′E), Jilin Province, China. Results showed that the total Zn content was lower, available Zn content had a moderate level in the soil, and the plants was not lack of Zn. During the growing season, content of total Zn and available Zn in soil showed a down-trend distribution along the soil profile. Content of total Zn had a significantly positive correlation with that of the organic matter, but it was negatively correlated to soil pH. Monthly dynamic of the average content of total Zn showed a "V" type curve in the growing season from May to August, and July was the nadir. The trend of the average content of available Zn was similar to thecontent of total Zn, but was down after August; Zn content variation in the organs and litter of L. chinensis was great,with the order of root＞rhizome ＞leaf＞stem＞litter. The ratio of available Zn content in A layer versus B layer was more than 2 times that of the total Zn, which indicated that the soil of A layer had higher enrichment capacity of available Zn. The enrichment of Zn in the root of L.chinensis was 44.17 times as that in the soil. The absorbing intensity of root had a significantly negative correlation with the activity of Zn in the soil (r=-0.8800, p＜0 01).
Microbial biomass in subtropical forest soils: effect of conversion of natural secondary broad-leaved forest to Cunninghamia lanceolata plantation

Conversion of natural secondary broad-leaved forest to Cunninghamia lanceolata plantation is a common management practice in subtropical China. In this study, we compared soil physico-chemical properties, microbial biomass in one natural secondary broad-leaved forest and two C. lanceolata plantation sites to estimate the effects of forest conversion on soil microbial biomass at the Huitong Experimental Station of Forestry Ecology, Chinese Academy of Sciences. Concentrations of soil organic carbon, total nitrogen, NH4+-N and microbial biomass carbon and nitrogen were much lower under C. lanceolata plantations as compared to natural secondary broad-leaved forest.Soil microbial biomass C in the first and second rotation of C. lanceolata plantations was only 53%, 46% of that in natural secondary broad-leaved forest, and microbial biomass N was 97% and 79%, respectively. The contribution of microbial biomass C to soil organic C was also lower in the plantation sites. However, the contribution of microbial N to total nitrogen and NH4+-N was greater in the C. lanceolata plantation sites. Therefore, conversion of natural secondary broad-leaved forest to C. lanceolata plantation and continuous planting of C.lanceolata led to the decline in soil microbial biomass and the degradation of forest soil in subtropical China.
Comparison of foliar nutrient concentrations between natural and artificial forests of Pinus sylvestris var. mongolica on sandy land, China

In order to examine the causes of degradationof Pinus sylvestris var. mongolica plantations on sandy land, the foliar concentrations of N, P, K and C were analyzed and compared between the field grown P. sylvestris var. mongolica trees from two provenances (natural forests and plantations). The results indicated that natural tree needles had lower N, P and C concentrations, and higher K concentrations than those of plantation tree needles. For plantation tree needles, ratios of N: P, P: K and N: K increased with tree age before 45 years old; but they were not clear for the natural tree needles. Compared with the conclusions reported on Pinus spp., we found that the foliar N and P concentrations were in the optimal range for both natural and plantation tree needles. This result suggested that N or P might not be the absolute limit factors in plant nutrient for P. sylvestris var. mongolica on sandy land. However, foliar K concentrations in both natural and plantation tree needles were much lower than those reported on Pinus spp. (＞4.80 g kg-1).The N: P ratio of natural needles was in the adequate ranges, but N:P ratio of plantation needles was out of the adequate ranges. These results indicated that there was a better balanced nutrition status in the natural forest than in the plantations. If only considering the foliar nutrient concentrations of P. sylvestris var. mongolica from different provenances, it might be concluded that the degradation phenomenon of P. sylvestris var. mongolica plantations was not induced by nutrition deficiency of absolute nutrients of N and P, but might be induced by other mineral nutrients or by the effectiveness of N and P nutrients. The unbalanced nutrition status and relatively quick decomposition of needles in the plantations might also contribute to the degradation.
Molecular basis of inherited calcium channelopathies: role of mutations in pore-forming subunits

The pore-forming alpha subunits of voltage-gated calcium channels contain the essential biophysical machinery that underlies calcium influx in response to cell depolarization. In combination with requisite auxiliary subunits, these pore subunits form calcium channel complexes that are pivotal to the physiology and pharmacology of diverse cells ranging from sperm to neurons. Not surprisingly, mutations in the pore subunits generate diverse pathologies, termed channelopathies, that range from failures in excitation-contraction coupling to night blindness. Over the last decade, major insights into the mechanisms of pathogenesis have been derived from animals showing spontaneous or induced mutations. In parallel, there has been considerable growth in our understanding of the workings of voltage-gated ion channels from a structure-function, regulation and cell biology perspective. Here we document our current understanding of the mutations underlying channelopathies involving the voltage-gated calcium channel alpha subunits in humans and other species.