mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Applications of Soil Series in Sustainable Land Use of Oasis Farmlands

The issue of agricultural land sustainability is important to every part of the world, especially in the developing countries. Based on the data collected by field investigation and laboratory analysis as well as soil classification theory, the authors discuss the applications of soil series in the arid northwestern China. On the one hand, the application in the layout of rational agricultural of oasis farmlands: (1) two soil series,namely,Lanjiabao (main) and Nijiaxiaying, belong to the moderate and extremely arid region in the study area; accordingly, the layout of crops is the spring wheat and maize (main) and winter wheat;(2) Nijiaxiaying (main) and Lanjiabao, however, fall into the warm-cold and extremely arid region, where the winter wheat (main) and spring wheat grow; and (3) the Shangfusi is part of the warm chilly-arid region, which is used as seasonal pastureland. On the other hand, the application on the soil quality of oasis farmlands, the results indicating that among all soil series, the content of N is very low, however, the content of K is abundant, and the content of P is greatly scarce.
Removal of disinfection by-products formation potential by biologically intensified process

The removal of disinfection by-products formation potential(DBPFP) in artificially intensified biological activated carbon(IBAC) process which is developed on the basis of traditional ozone granular activated carbon was evaluated. By IBAC removals of 31% and 68% for THMFP and HAAFP were obtained respectively. Under identical conditions, the removals of the same substances were 4% and 32% respectively only by the granular activated carbon(GAC) process. Compared with GAC, the high removal rates of the two formed potential substances were due to the increasing of bioactivity of the media and the synergistic capabilities of biological degradation cooperating with activated carbon adsorption of organic compounds. A clear linear correlation ( R2 = 0.9562 and R2 = 0.9007) between DOC HAAFP removal rate and Empty Bed Contact Time(EBCT) of IBAC process was observed, while that between THMFP removal rate and EBCT of GAC was R2 = 0.9782. In addition certain linear correlations between THMFP, HAAFP and UV254 ( R2 = 0.855 and R2 = 0.7702) were found for the treated water. For IBAC process there are also more advantages such as long backwashing cycle time, low backwashing intensity and prolonging activated carbon lifetime and so on.
Persistent organic pollutants control strategy in China 

The development of Persistent Organic Pollutants(POPs) control policy in China in the context of international concerns on POPs was reviewed. The aspects of the Chinese POPs control strategies were analyzed, and compared with those of developed counterparts (e.g. US, EU, Japan). Currently, while the legal framework on POPs management, which complies with international guidelines has been established, it should be improved in the areas of special POPs management, risk assessment, the precautionary principle, lifecycle management and technical support capacity. The analysis of Chinese POPs policy and suggestions for strengthening the sciencebased decision making capacity are not only useful for Chinese decision-makers, but also a case study for developing world and make a great contribution for the global elimination of POPs to make a toxic-free future.
Degradation of 2,6-di-tert-butylphenol by an isolated high-efficiency bacterium strain

An aerobic bacterium strain, F-3-4, capable of effectively degrading 2,6-di-tert-butylphenol (2, 6-DTBP), was isolated and screened out from an acrylic fiber wastewater and the biofilm in the wastewater treatment facilities. This strain was identified as Alcaligenes sp. through morphological, physiological and biochemical examinations. After cultivation, the strain was enhanced by 26.3% in its degradation capacity for 2,6-DTBP. Results indicated that the strain was able to utilize 2,6-DTBP, lysine, lactamine, citrate, n-utenedioic acid and maiic acid as the sole carbon and energy source, alkalinize acetamide, asparagine, L-histidine, acetate, citrate and propionate,but failed to utilize glucose, D-fructose, D-seminose, D-xylose, serine and phenylalanine as the sole carbon and energy source. The optimal growth conditions were determined to be: temperature 37 ℃, pH 7.0, inoculum size 0.1% and shaker rotary speed 250 r/min.Under the optimal conditions, the degradation kinetics of 2,6-DTBP with an initial concentration of 100 mg/L was studied. Results indicated that 62.4% of 2,6-DTBP was removed after 11 d. The degradation kinetics could be expressed by Eckenfelder equation with a half life of 9.38 d. In addition, the initial concentration of 2,6-DTBP played an important role on the degradation ability of the strain. The maximum initial concentration of 2,6-DTBP was determined to be 200 mg/L. Above this level, the strain was overloaded and exhibited significant inhibition.
智能型管网自动补压设备的开发与应用

为了解决二次增压供水中水质二次污染和能量浪费问题,研究设计了智能型管网自动补压设备.该设备对接收到的市政管网和用户管网压力信息进行分析,自动控制水泵的启停和变频调速运行.设备能充分利用市政管网能量,并能避免对市政管网产生破坏和影响.经工程应用,设备运行稳定,节能效果明显.
民用建筑生活用水量与热水量的讨论

根据2003年9月1日正式实施的<建筑给水排水设计规范>(GB 50015-2003)有关规定,结合1997年版的<建筑给水排水设计规范>(GBJ 15-88)情况,通过对典型建筑生活用水最大小时流量和设计小时热水量的计算与比较,提出了对规范中水量计算有关规定的意见与建议.
后"非典"时期医院污水防治对策探讨

"非典"的暴发流行,暴露出医院污水防治中存在诸多问题,形势严峻.在分析总结现行医院污水防治所存在的主要问题的基础上,对后"非典"时期医院污水的防治对策从政策、资金、管理等方面进行了研究探讨.
交通事故案驾驶员确定分析1例

在交通事故案件当中,经常需要确定驾驶员.一般而言,找到方向盘的损伤就比较好确定驾驶员,但有些案件没有典型的方向盘损伤,则需要对尸体、事故现场以及事故车进行细致全面地检查和综合地分析,才能得到正确的鉴定结果.现将笔者鉴定的一起案件报道如下.……
假单孢菌固定化除硫化氢臭气的试验研究

由除硫化氢的生物滤池中分离出1株假单孢菌,对其进行海藻酸钙包埋固定化,在生物流化床反应器中进行了脱除硫化氢的效能和影响因素研究.结果表明:固定化假单孢菌流化床生物反应器去除硫化氢效果良好、抗冲击性强,适宜pH为6～8,温度为20～35℃,临界进气负荷为3.77g/(m3·h).其生物作用将H2S转化为单质硫的转化比例为74.9%;转化为硫酸根的比例为17.1%;转化为硫代硫酸根和亚硫酸根的比例分别为1%和0.2%.
微量检材DNA提取方法

法医DNA鉴定中常见的微量检材,是指含有微量核DNA的降解检材(例如陈旧骨骼等)和附着载体上生物组织量少的检材.为了获得"大量"的检材DNA就必须增加检材用量,扩大反应体系.应用大反应体系提取微量检材DNA时,常出现提取溶液DNA含量过低,而不能获得DNA沉淀.如果不采用有效的方法,就会由于提取操作不当而引起DNA损失,导致PCR反应失败,直接影响案件的侦破和法庭证据的科学性.本文应用正丁醇浓缩法成功地解决了微量检材DNA的提取问题,在实际的案件鉴定中取得了满意的结果.……
白内障摘除术后晶状体前囊膜收缩综合征临床病理分析三例

连续环形撕囊(continuous curvilinear capsulorhexis,CCC)是现代超声乳化白内障吸除术中常用的打开晶状体前囊膜的方法,其优点很多[1,2],但同时也可引发新的手术并发症,如晶状体前囊膜收缩综合征(capsule contraction syndrome,CCS)[1,3].
Triptolide suppresses CD80 and CD86 expressions and IL-12 production in THP-1 cells

Aim: To investigate the effects of triptolide, a diterpenoid triepoxide from Tripterygium wilfordii Hook F (TWHF), on the co-stimulatory molecule expression and interleukin-12 (IL-12) production from THP-1 cells.Methods: THP-1 cells were differentiated into macrophage-like cells by Me2SO, and then cultured with IFN- (500 kU/L) and lipopolysaccharide (LPS) (1 mg/L) with or without triptolide. The surface molecule expressions were analyzed on a FACScan flow cytometer. IL-12p40, IL-12p70 were assayed by ELISA.Results: Tripolide suppressed CD80 and CD86 expressions on IFN- (500 kU/L) and LPS (1 mg/L) activated THP-1 cells at nontoxic dosages of 2.50.625 g/L. Furthermore, the production of IL-12p40 and IL-12p70 were also significantly reduced in THP-1 cells exposed to triptolide.Conclusion: Triptolide impairs the antigen-presenting function by inhibiting CD80 and CD86 expressions and decreased IL-12p40 and IL-12p70 (bioactive form) productions from the activated THP-1 cells.
PXI总线数字输入/输出模块的设计与实现

描述了基于PXI总线的数字输入/输出模块的特点和原理,以及用PCI9030接口芯片和FPGA器件实现的PXI总线接口电路,提出了数字输入/输出电路及高精度延时补偿电路的实现方法。实践证明系统原理和硬件设计是成功的。
《垄断产业改革--基于网络视角的分析》评介

刘戒骄博士完成的专著<垄断产业改革--基于网络视角的分析>(经济管理出版社,2005年)是垄断产业改革研究的一个有创见的理论成果,体现了我国经济学界在这一领域的研究上所达到的较高学术水平. ……
2001-2003年南京市碘盐质量监测报告

南京市属轻度缺碘地区,1984年调查即被定为江苏省碘缺乏病重点病区之一,1996年起在全市范围内实施全民食用加碘盐的干预措施,取得了显著成效,已于2000年达到了国家碘缺乏病消除标准.近年来南京市碘盐质量有了较大提高,为及时了解和掌握全市达到消除标准后碘盐干预措施的落实情况,现将3年来的碘盐监测情况报告如下.
基于虚拟仪器的核能海水淡化实验测控平台

为了测量大型双塔4效高温多效海水淡化实验装置各部位的温度、压强及流量等热工参数,建立了基于虚拟仪器的海水淡化实验测控平台。使用高精度数据采集板及计算机等并在LabVIEW平台中实现了将传感器及热电偶的电压信号采集、输出、存储和分析。成功解决了实验系统的测量和监控任务。
Multivariable Intelligent Decoupling Control System and its Application

Many industrial processes have compositive complexities including multivariable, strong coupling, nonlinearity, time-variant and operating condition variations. Combining multivariable adaptive decoupling control with neural networks, this paper presents a multivariable neural networkbased decoupling control algorithm. This control algorithm is integrated with distributed control technique and intelligent control technique, and a three-leveled intelligent decoupling control system consisting of basic control level, coordinating control level, and management and decision level is developed. The configuration and function of the control system are discussed in detail. This system has been successfully applied in ball mill pulverizing systems of 200MW power units, and remarkable benefits have been obtained.
Modeling and Identification of Multirate Systems

Multirate systems are abundant in industry; for example, many soft-sensor design problems are related to modeling, parameter identification, or state estimation involving multirate systems. The study of multirate systems goes back to the early 1950's, and has become an active research area in systems and control. This paper briefly surveys the history of development in the area of multirate systems, and introduces some basic concepts and latest results on multirate systems, including a polynomial transformation technique and the lifting technique as tools for handling multirate systems, lifted state space models, parameter identification of dual-rate systems, how to determine fast single-rate models from dual-rate models and directly from dual-rate data, and a hierarchical identification method for general multirate systems. Finally, some further research topics for multirate systems are given.
双峰县中晚稻稻曲病重发原因及综合治理对策

稻曲病是双峰县水稻生产上的常见病害,2004年稻曲病呈偏重发生,是近10 a来最严重的一年.其发生特点是:发生面积大、危害严重、损失大.分析其原因,主要是菌源广泛存在、气候条件适宜、品种抗性不强、肥料水平较高、药剂防治不力等.稻曲病的防治应采取"调整耕作制度、选用抗病良种、加强栽培管理、科学施药防治"等策略,以控制其危害.
红壤稻田系统的施肥问题及对策

通过对湖南省近50 a肥料投入与水稻生产情况的分析,结合水稻肥料定位试验的有关结果,提出了红壤稻田系统肥料的管理方略:在维持系统内有机物料循环利用的基础上,合理调节氮磷钾的比例,进行养分的综合管理,是提高土壤肥力、实现水稻高产优质的重要措施之一.
湘南烟区施肥部位对肥料利用率的影响

不同的施肥方法直接影响烟草根系吸收养分的时间和肥料利用率,并决定着作物生长前、中、后期土壤养分的供应状态.为寻找湘南烟区适宜的基底肥施用方法,进行了烟草不同施肥方法的试验.试验表明:T3施肥法对烟叶产量、质量均有较好的效果,其次为T2,T4、T1相对较差,生产上以T2、T3为推广模式.
盐酸乌拉地尔治疗急性肺损伤的临床观察

目的通过乌拉地尔在急性肺损伤(ALI)的应用,观察其改善ALI的氧交换及氧供的作用.方法随机将42例ALI病人分为两组;一组予P-CMV/PSIMV+PEEP及常规治疗,另一组加用盐酸乌拉地尔3～5μg·min-1·kg-1持续静脉点滴,分别在0、6、12、24h监测血压、血气及呼吸功能.结果ALI病人在应用乌拉地尔后体循环血压相对无显著改变;心率早期有轻度升高,但无显著意义,1 d后却有显著下降;动脉血氧分压、氧合指数在短期内改善并不明显,在应用1 d后则较对照组有明显改善;肺的顺应性、呼吸道阻力也在短期内改善并不明显,在应用1 d后则较对照组有明显改善.结论乌拉地尔能明显改善ALI的氧交换及氧供,改善肺的基本病变.
温敏核不育系康201S制种技术研究

2002～2004年连续3 a在芷江对康201S生育特性及制种技术进行了研究.结果表明,康201S苗期长势旺,分蘖力极强,综合抗性较好;育性稳定,播始历期65～70 d,随制种区海拔升高,播始历期及生育期适当延长;开花习性中等,柱头单边外露67%左右,对"九二0"较敏感,制种用"九二0"240～300g/hm2,在抽穗20%～30%时始喷;制种花期宜安排在8月份,但应避开立秋前后的倒秋雨.在栽培方式上宜选择直播或抛秧方式,母本宜适当稀植,并采用2:10～12的父、母本行比.康201S/R527制种播差期以24 d(叶差5.9叶)为宜,父本宜分两期播种.
Approximate Dynamic Programming for Self-Learning Control

This paper introduces a self-learning control approach based on approximate dynamic programming. Dynamic programming was introduced by Bellman in the 1950's for solving optimal control problems of nonlinear dynamical systems. Due to its high computational complexity, the applications of dynamic programming have been limited to simple and small problems. The key step in finding approximate solutions to dynamic programming is to estimate the performance index in dynamic programming. The optimal control signal can then be determined by minimizing (or maximizing) the performance index. Artificial neural networks are very efficient tools in representing the performance index in dynamic programming. This paper assumes the use of neural networks for estimating the performance index in dynamic programming and for generating optimal control signals, thus to achieve optimal control through self-learning.
连续式空中真菌孢子捕捉器的设计

设计一台在野外使用的、能连续7d进行捕捉空中真菌袍子的仪器，该仪器可以对作物周围环境中的真菌孢子相对数量或密度进行连续监测，从而对作物病害进行准确预测，是采集农业生物信息数据，保证环境和农产品安全的有效工具。
运动创伤微创手术与康复

运动创伤外科近年发展很快,从运动创伤基础研究,到临床诊断、治疗等都取得长足的进展.运动损伤的外科治疗目标已从损伤组织的愈合发展为肢体功能的恢复:关节切开手术已被微创手术替代;术后肢体制动由单纯石膏固定发展为支具固定为主,并由此逐渐采用以早期功能活动为特点的康复训练.以最大限度恢复运动功能为治疗目的的现代运动创伤的发展,促使微创外科技术和康复技术,这两个21世纪具有各自学科特色的新型技术交融发展.
举技术创新火炬,做国际市场的领跑者--访珠海炬力集成电路设计有限公司总经理赵广民

珠海炬力在芯片设计领域内异军突起,于2003年被中国半导体行业协会评选为当年度国内最具成长性的十大I C设计企业之一.短短3年的时间内,取得如此突出的成就,请介绍一下贵公司的主要经验是什么.
臂丛神经牵拉样手法治疗单侧神经根型颈椎病的临床研究

目的:探讨臂丛神经牵拉样手法治疗单侧神经根型颈椎病的疗效.方法:将64例神经根型颈椎病患者随机分成2组,治疗组35例,采用颈椎牵引、推拿及臂丛神经牵拉样手法,对照组只行颈椎牵引、推拿,隔天1次,10次1疗程.治疗前后按颈椎病颈椎功能评定表进行评定.结果:治疗前2组患者颈椎功能评分比较差异无显著性(P＜0.05);治疗后2组评分与治疗前比较均明显升高(P＜0.001).治疗组与对照组比较,颈椎功能改善更明显(P＜0.01).结论:臂丛神经牵拉样手法在单侧神经根型颈椎病治疗中是一种安全、有效的治疗手法.
发展国产半导体材料任重道远

中国半导体材料经过40多年的研究与开发,已具备了相当的基础,特别是在改革开放以后,中国半导体材料获得明显的发展,除满足国内市场外,一些材料开始进入国际市场.据统计,我国从事半导体材料研究生产企业约35家,从业人员近4000人,以5英寸、6英寸为主,2003年国内硅单晶产量达1100吨左右,平均年增长率为27.5%.由于自2002年以来国际半导体市场需求的回升,特别是中国半导体产业的快速增长,硅材料企业基本上都处于满负荷生产,有的企业还加快了12英寸硅片的研究开发,以适应未来市场发展的需要.
金优17在陕西安康种植表现及高产栽培技术

金优117在陕西种植表现丰产稳产、生育期适中、适种范围广、抗逆性较强等特点,2 0 0 4年4月通过陕西省农作物品种审定。介绍了该组合的试验示范表现及高产栽培技术要点。
杂交中稻新组合T优300的特征特性及栽培技术要点

T优3 0 0是一个高产、稳产、优质的三系杂交中稻新组合,在湖南省及国家武陵山区区试中表现优异,在生产试验和示范中产量较高,米质较好。该组合在推广过程中应注意选择合适的生态区域,在栽培中应注意控氮增钾 。
秭归县严坪基地杂交水稻制种高产稳产技术总结

秭归县严坪基地从1997—2 0 0 4年累计制种2 2 3 .6hm2 ,连续8a获得优质高产稳产,平均单产4.2 2t hm2 ,最高单产达6.2 5t hm2 。总结了该基地杂交水稻制种高产稳产技术措施。
复方曲安奈德乳膏治疗外耳湿疹32例

外耳湿疹是一种发生在外耳的皮肤病,主要表现为耳廓、外耳道及其周围皮肤的多形性皮疹,其主要特征是瘙痒、多形性皮疹、局部渗液、痂皮,易反复发作.我科2002～2004年使用复方曲安奈德乳膏外用涂搽治疗外耳湿疹32例,疗效满意.现报告如下.……
伊曲康唑治疗浅表性真菌感染的临床疗效及安全性评估

目的了解国产伊曲康唑治疗浅表性真菌病的临床疗效及安全性.方法随机将门诊就诊的真菌感染患者按感染的不同部位分成A,B,C,D 4个组,给予不同给药方法治疗1周,完成治疗后第2,4周分别对疗效及安全性进行评估.结果总有效率达90%以上,不良反应发生率为8.4%.结论国产伊曲康唑治疗浅表性真菌感染疗效好,不良反应少.
围生期血栓前状态的研究进展

深静脉血栓形成(DVT)是妊娠期及产褥期危及母体生命的主要并发症,DVT在妊娠期及产褥期发生较少,但其严重并发症,特别是肺栓塞(PE)将直接威胁孕产妇的生命安全.……
腹膜后纤维化致肾积水的诊治体会

目的探讨腹膜后纤维化(RPF)致肾积水的诊断与治疗方法,以提高本病的早期诊治率.方法通过影像学检查进行诊断和鉴别诊断,根据情况选择保守治疗或手术治疗.结果保守治疗可延缓或阻止病变发展,手术治疗可明显改善症状,挽救肾功能.结论对B超检出的肾积水患者,特别是伴输尿管上段积水者,要考虑到RPF,需进一步行静脉肾盂造影检查,CT及MRI对病变范围、程度以及多结构受累的诊断比较准确.早期病变以保守治疗为主,中晚期病变以手术治疗为主.
防风超临界提取物的止血作用

防风Saposhnikovia divaricata(Turcz.)Schis-chk.为辛温解表药,功能解表祛风、胜湿、止痉;用于治疗感冒头痛、风湿痹痛、风疹瘙痒、破伤风.文献记载防风炒炭,尚可用于治肠风下血[1].
2004年全球矿业勘查回顾

2005年3月6日-9日，在加拿大多伦多举行了Prospects＆Devel叩ers Association of Canada国际大会，这是一次全球探矿者的重要会议。全球600多家与矿业有关的政府部门和组织以及近400家矿业锄探公司组团参加了这次大会，进行了广泛的学术交流和矿业勘查和开发的成果展示。
2003～2004年磁学和磁性材料新进展(Ⅰ)一般磁性、非金属磁性和材料及磁共振

综合介绍2003～2004年间国内外磁学和磁性材料在基础和应用研究方面的若干新进展.这是从1977年开始的每年这方面新进展综述的继续.全文分(Ⅰ)、(Ⅱ)两部分.第一部分含一般磁性和非金属磁性、微波磁学、磁光学、磁电子学、磁记录学、各种磁共振(铁磁、顺磁、核磁共振和M?ssbauer效应).第二部分含金属磁性、稀土磁学、纳米和非晶磁学、磁性材料和磁效应、磁技术和磁应用、交叉磁学(生物磁学、地球磁学、宇宙磁学、原子核磁学和基本粒子磁学).资料取自这一时期的磁学会议和期刊文献.附录中列出2004年国内外有关磁学会议的题录.
无公害稻鸭共作生产技术规程

以基地环境条件选择、品种选择、规范栽培、肥料和农药的使用等为主要内容,构建了一套较系统的无公害稻鸭共作生产技术规程.该项规程在生产上的推广应用,将对提高广东省无公害稻鸭共作生产技术水平,改善品质,提高其市场竞争力,产生积极的推动作用.
臭氧的保鲜机理及其在果蔬贮运中的应用

阐述了臭氧对果蔬的保鲜机理与特点,臭氧产生与测定的方法,臭氧应用于果蔬贮运的消毒、杀菌和防腐保鲜方法,影响臭氧保鲜效果的主要因素及臭氧保鲜的应用前景.
甘薯品种揭薯16的选育及高产栽培技术

甘薯品种揭薯16具有优质、高产、稳产、适应性广、高抗薯瘟病等特点,干物率高达33.5%,干薯产量比对照种广薯111增产极显著,食味评分比对照种广薯111高4.6分,商品价值高.该品种于2003年3月通过了广东省农作物品种审定.
上呼吸道混合感染痰中检岀鞭毛虫一例

我们于2004年1月14日从一上呼吸道混合感染患者痰中检岀鞭毛虫,同时伴有支原体感染.患者,女,86岁,有糖尿病病史9年,平时常规服用降糖降脂及抗生素药物,很少参加户外活动,基本生活自理,但不承担任何劳动.2004年1月6日因腹痛、腹泻、咳嗽,发热住入我院干部一病区,查体T 38.1℃,WBC 4.42×109/L,N 1.5,L 1.74,PLT 102×109/L,X线检查肺纹理增强,空腹血糖7.71/mmol,餐后10.5/mmol,2004年1月14日清晨清洁口腔后留取痰液,送检.
关于改进定性试验报告方式的几点建议

随着新的医疗法的施行,医疗文书的书写受到更加广泛的重视,检验报告在医疗行为中占有重要地位.但是笔者却发现,许多定性试验的传统报告方式存在着易被篡改和易误认等问题,极易岀现医疗纠纷.为做好检验工作者的自身保护,维护医院的利益,笔者认为应对其进行适当改进
临床化学定量测定室间质量评价的有关问题

实验室室间质量评价(EQA)的目的是评价实验室测定结果的准确性,建立起实验室间结果的可比性.EQA是实验室检验质量的客观证据,也是实验室认可的重要依据.但是,现行的室间质评由于评价靶值的设定问题、评价标准的问题,影响着质评结果的客观性;同时,由于实验室人员在仪器校准和方法选择等方面存在的问题以及一些人为因素的影响,在某种程度上使质评结果不能反映实验室的真实能力.正视这些问题的存在,有助于我们逐步解决问题,进一步完善室间质量评价工作.
SD大鼠原代颌下腺细胞体外培养的生物学特征研究

组织工程化涎腺的体外构建首先需要获得增殖活跃、有功能的种子细胞.我们通过本实验进行颌下腺腺细胞的体外培养,并对其在体外的增殖和分化进行了研究.……
采用重心驱动(DCG)的机床

重心驱动不仅是一种能够缩短加工时间,改善轮廓精度,还是能够提高加工面质量的技术.众所周知推着物体移动时,如果没有推到其中点位置,很容易造成物体转动,出现不稳定.因此重心驱动就是利用了"要推中点"这一简单的原理(如图1).……
精索静脉曲张大鼠模型复制的改进

2002年2月至2002年9月,我们改进精索静脉曲张动物模型复制方法,在左肾静脉缩窄基础上,分离结扎左精索内静脉与左髂总静脉间的分支,效果满意,现报告如下.……
口腔扁平苔藓临床疗效研究中的问题及探讨

自从1869年被首次报道以来,口腔扁平苔藓(oral lichen planus, OLP)作为口腔黏膜常见疾病已困扰了人类135年.据一些公开发表的调查资料显示,OLP的发病率为0.1%～4%,癌变率为0.4%～3.7%.本病病程慢性迁延,给患者带来机体和心理的痛苦是显而易见的.因此,OLP的临床治疗研究一直是大家关注的领域.为了解我国OLP治疗研究现状,作者对过去10年(1994年1月至2004年6月)间国内公开发表的关于OLP治疗研究的文献进行检索;并依据循证医学和医学统计学的要求进行评价,分析和总结OLP临床疗效研究中出现的问题,以期有助于临床医师对疗效研究环节的了解和重要性的认识,提高临床科研水平.……
二种剂量异丙酚对胆囊切除术老年患者应激反应的影响

异丙酚是国内外广泛用于临床的短效静脉麻醉药,异丙酚的心血管作用可有效地调节全麻插管及术中麻醉维持期的应激反应[1,3].但是否适用于心血管应激反应较迟钝的老年人尚无定论.本研究拟比较不同剂量异丙酚对胆囊切除术老年患者应激反应的影响,探讨异丙酚用于老年人麻醉较为合适的剂量.
慢性胰腺炎并发脾破裂一例

患者男,40岁.主因"间断上腹痛10年,急性发作2 d"于2004年7月14日入院.患者十余年来多次于大量饮酒后出现突发上腹痛,多次住院诊断为"急性胰腺炎".2 d前,饮白酒300 g后,突发上腹痛,为持续性剧烈疼痛,向腰背部放射,伴恶心未吐,无畏寒发热.遂来我院急诊就诊,查血淀粉酶46 U/L,尿淀粉酶851 U/L.血常规:WBC 13.1×109/L,淋巴 0.16,中性0.81, Hb 164 g/L.腹部CT检查提示胰腺增粗,以体尾部为显著,边界略模糊,胰腺实质内可见散在点条状略高密度影.肝脾未见异常.腹腔内未见积液.为进一步诊治收入院.
Kolmogorov熵在大鼠脑电麻醉深度监测中的应用

将非线性动力学中的Kolmogorov熵应用到大鼠脑电麻醉深度监测分析中,计算并分析了大鼠在戊巴比妥钠腹腔注射麻醉过程中脑电信号的Kolmogorov熵动态变化曲线,结果表明:大鼠注射戊巴比妥钠后,在最初的麻醉过程中,有些脑区呈抑制状态,有些脑区呈兴奋状态;大鼠注射戊巴比妥钠后A脑区进入深度麻醉状态的诱导期时间约为1 300 s,B脑区的约为1 400 s;麻醉时Kolmogorov熵动态变化曲线与原始脑电信号所反映的各脑区抑制与兴奋状态的变化趋势有很好的一致性.因此,Kolmogorov熵可为临床麻醉深度的实时监测提供一个新的方法.
食用榕属植物花序托中毒一例

2004年7月26日,在贵州省安顺市黄果树镇黄果树村二组发生一起因误食了野生榕(Ficus sp.)植物的花序托(被误称为"无花果")后引起的食物中毒事件,中毒3人,均住院接受治疗.调查中,嘱中毒患者家属买来类似的"同种"野果,经鉴定后证实不是无花果(Ficus carice).为进一步查明中毒原因,2004年8月3日在中毒者居住地采集到中毒标本,带回的标本经中毒患者亲自认定,确认标本与中毒患者进食的野果同属一种植物的"果子".……
人口爆炸、户数爆炸还是消费爆炸？

1人口增长是造成资源短缺、生态恶化的主要原因--一般认识　　在人口、资源、环境问题研究中,人们往往认为人口数量的快速增长是造成资源短缺、生态环境恶化的主要原因,并进而将其作为制约可持续发展的主要因素.在所构建的一些分析模型中,也多以人口数量与资源(如土地、水、能源等)数量和消耗量之间的关系,来说明人口数量增长对资源环境所造成的压力.认为人口数量大、增长快,不仅对资源和环境造成巨大的压力,也使经济和社会发展背上沉重的包袱,并因此把计划生育指标这一反映人口数量控制的指标作为评价可持续性的一个指标.
循环经济与生态产业园区：理念与实践

传统的经济增长模式是通过把资源持续不断地变成废弃物，忽视了经济结构内部各产业之间的有机联系和共生关系，忽视了社会经济系统和自然生态系统间的物质、能源和信息的传递、迁移、循环等规律，致使资源枯竭和生态恶化。
铸态高强韧球墨铸铁的研制

针对某些汽车底盘零件性能的技术要求,通过选择合适的化学成分,采用双联熔炼工艺并进行两次脱硫,获得温度和成分稳定的低硫原铁液,选用低稀土球化剂,使用盖包法球化处理工艺,合理的孕育工艺,研制出了一种高强韧球墨铸铁,其抗拉强度和伸长率分别超过700MPa和5%.
基于管理熵和管理耗散的企业制度再造的理论框架

本文以分工关系为主线，说明不确定性、外部性和不可逆性对企业制度的形成和变革之意义。在区分组织强制力和市场强制力的企业制度基础上，提出了一种新的基于管理熵、管理耗散结构理论的企业制度分析的理论框架。基于组织强制力的企业制度的封闭性质，阻隔了企业内部要素结构与外部要素结构之间的互动，降低企业与外界的物质交换和补偿效率。管理熵和管理耗散结构统合了企业的不确定性、不可逆性和外部性与组织的“序”之间的关系。基于管理熵和管理耗散结构的企业制度可以较好地融合组织强制力和市场强制力，通过组织化过程使企业保持较高的开放性，使市场强制力能够对企业成员的行为产生足够的影响，促进企业从外部获得更多的信息并在组织内有效利用，可以增强企业内的系统新信息和新模式的自创生能力，促使企业内部的结构和功能发生改变，以提高企业与环境进行物质、信息和能量交换的能力。
血液病患者血小板输注效率分析

血小板输注可以预防和治疗因血小板减少或血小板功能缺陷引起的出血,可以降低放化疗后血小板减少导致的出血死亡率.但血小板输注也会导致不良反应,主要是血小板输注无效,且其严重后果尚未引起普遍重视.现将我院2001年1月至2003年12月收治的210例急性白血病、再生障碍性贫血(再障)和骨髓增生异常综合征(MDS)患者输注血小板的疗效报告如下,并对其影响因素进行分析.
Comparison Between Computer Simulation of Transport and Diffusion of Cloud Seeding Material Within Stratiform Cloud and the NOAA-14 Satellite Cloud Track 

A precipitation enhancement operation using an aircraft was conducted from 1415 to 1549 LST 14 March 2000 in Shaanxi Province. The NOAA-14 satellite data received at 1535 LST soon after the cloud seeding shows that a vivid cloud track appears on the satellite image. The length, average width and maximum width of the cloud track are 301 km, 8.3 and 11 km, respectively. Using a three-dimensional numerical model of transport and diffusion of seeding material within stratiform clouds, the spatial concentration distribution characteristics of seeding material at different times, especially at the satellite receiving time,are simulated. The model results at the satellite receiving time are compared with the features of the cloud track. The transported position of the cloud seeding material coincides with the position of the track. The width, shape and extent of diffusion of the cloud seeding material are similar to that of the cloud track.The spatial variation of width is consistent with that of the track. The simulated length of each segment of the seeding line accords with the length of every segment of the track. Each segment of the cloud track corresponds to the transport and diffusion of each segment of the seeding line. These results suggest that the cloud track is the direct physical reflection of cloud seeding at the cloud top. The comparison demonstrates that the numerical model of transport and diffusion can simulate the main characteristics of transport and diffusion of seeding material, and the simulated results are sound and trustworthy. The area, volume, width, depth, and lateral diffusive rate corresponding to concentrations 1, 4, and 10 L-1are simulated in order to understand the variations of influencing range.
Optimal Parameter and Uncertainty Estimation of a Land Surface Model: Sensitivity to Parameter Ranges and Model Complexities 

Most previous land-surface model calibration studies have defined global ranges for their parameters to search for optimal parameter sets. Little work has been conducted to study the impacts of realistic versus global ranges as well as model complexities on the calibration and uncertainty estimates. The primary purpose of this paper is to investigate these impacts by employing Bayesian Stochastic Inversion (BSI)to the Chameleon Surface Model (CHASM). The CHASM was designed to explore the general aspects of land-surface energy balance representation within a common modeling framework that can be run from a simple energy balance formulation to a complex mosaic type structure. The BSI is an uncertainty estimation technique based on Bayes theorem, importance sampling, and very fast simulated annealing.The model forcing data and surface flux data were collected at seven sites representing a wide range of climate and vegetation conditions. For each site, four experiments were performed with simple and complex CHASM formulations as well as realistic and global parameter ranges. Twenty eight experiments were conducted and 50 000 parameter sets were used for each run. The results show that the use of global and realistic ranges gives similar simulations for both modes for most sites, but the global ranges tend to produce some unreasonable optimal parameter values. Comparison of simple and complex modes shows that the simple mode has more parameters with unreasonable optimal values. Use of parameter ranges and model complexities have significant impacts on frequency distribution of parameters, marginal posterior probability density functions, and estimates of uncertainty of simulated sensible and latent heat fluxes.Comparison between model complexity and parameter ranges shows that the former has more significant impacts on parameter and uncertainty estimations.
Interdecadal Variations of Phase Delays Between Two Ni(n)o Indices at Different Time Scales

Phase delays between two Nino indices-sea surface temperatures in Nino regions 1+2 and 3.4(1950-2001)-at different time scales are detected by wavelet analysis. Analysis results show that thereare two types of period bifurcations in the Nino indices and that period bifurcation points exist only in the region where the wavelet power is small. Interdecadal variation features of phase delays between the two indices vary with different time scales. In the periods of 40-72 months, the phase delay changes its sign in 1977: Nino 1+2 indices are 2-4 months earlier than Nino 3.4 indices before 1977, but 3-6 months later afterwards. In the periods of 20-40 months, however, the phase delay changes its sign in another way:Nino 1+2 indices are 1-4 months earlier before 1980 and during 1986-90, but 1-4 months later during 1980-83 and 1993-2001.
高分辨气质联用分析大气颗粒物中的二噁英

二噁英由于持久性、高蓄积性、高毒性为人们所广为关注.它是多氯代二苯并二噁英类及多氯代呋喃类的简称(PCDD/PCDF),共有210种同分异构体.其中毒性最强的是2,3,7,8-TCDD,动物实验表明其对天竺鼠(guinea pig)的半致死剂量(LD50)为1μg·kg-1,是迄今为止发现过的致癌性最强的物质.……