mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Treatment and hydraulic performances of the NiiMi process for landscape water

This paper describes the NiiMi process designed to treat landscape water. The main aim of the research was to in-vestigate the feasibility of NiiMi for removing organic and nutriment materials from landscape water. During the batch-scale NiiMi operation, the removal rates of color ranged from 66.7%-80%, of turbidity from 31.7%-89.3%, of chemical oxygen de-mand (COD) from 7%-36.5%, of total phosphor (TP) from 43%-84.2%, of soluble phosphate from 42.9%-100%, of total nitrogen removal efficiencies of COD, TP, soluble phosphate and TN decreased with the decline in the temperature. The NiiMi process had a strong shock loading ability for the removal of the organics, turbidity, TP, soluble phosphate, TN and NH_4~+-N. Three sodium chloride tracer studies were conducted, labeled as TS1, TS2, and TS3, respectively. The mean hydraulic retention times (mean HRTs) were 31 h and 28 h for TS1 and TS2, respectively, indicating the occurrence of a dead zone volume of 12% and 20% for TS1 and TS2, respectively. TS1 and TS2 displayed the occurrence of short-circuiting in the NiiMi system. The comparison results between TS1 and TS2 were further confirmed in the values obtained for some indicators, such as volumetric efficiency (e), short-circuiting (S), hydraulic efficiency (λ) and number of continuously stirred tank reactors (N).
Factors influencing the formation of chlorination brominated trihalomethanes in drinking water

The formation of brominated trihalomethanes (THMs-Br) which is proved more carcinogenic than their chlorinated analogues reported was very different at various water qualities. This study was performed to assess the effects of water quality parameters (bromide concentration, pH value and ammonia concentration), chlorination conditions (chlorine dose, reaction time) and ratios of Br~-/DOC and Br~-/Cl_2 consumption on the formation and distribution of THMs-Br in chlorination. The results showed good correlation between the bromine incorporation factor (BIF) n(Br) and Br~-/Cl_2 consumption ratio. The formation of total THM (TTHM) was found to decrease with increasing ammonia concentration but to increase with bromide concentration and pH value. The n(Br) trends were significantly affected by the presence of bromide concentration. The effects on the molar yields of THMs were more strongly influenced by bromide concentration and dissolved organic carbon (DOC) concentration than pH value and natural organic matter (NOM) source. High Br~-/DOC and Br~-/Cl_2 favor the formation of THMs-Br over chlorinated THMs (THMs-Cl). The experimental data including the main parameters such as bromide, DOC, ammonia, pH and reaction time were used for developing the predictive model for THMs-Br.
癌基因BRAF突变在黑色素细胞痣与黑色素瘤中的作用

BRAF(v-raf murine sarcoma viral oncogenehomolog B1)是一种癌基因,位于RAS/RAF/MEK/ERK信号传导通路上.2002年以来,学者们相继发现在黑色素瘤中存在高频率的BRAF突变,这种T到A的突变发生在第15号外显子激酶结构域的单个位点,导致第600个密码子编码的氨基酸发生错义突变(BRAF~(V600E)),从而激活RAS/RAF/MEK/ERK通路,揭示可能与肿瘤发生相关~([1]).
肝脏多发性占位

病历摘要患者男,37岁,因发现肝脏多发占位1周入院.患者1周前行超声检查时发现肝脏多发占位,至当地医院行腹部CT、MRI等检查,见肝内多发类圆形异常密度灶,边界不清,内有多发点状高密度影,寄生虫(包虫)感染可能性大,血管瘤不能除外.患者长期从事运输业,曾至全国各地,饮食、生活习惯入乡随俗.病程中无恶心、呕吐、反酸、暧气、腹痛、腹胀、腹泻、发热等不适.未发现皮肤包块、肌肉酸痛.患者精神、食欲、睡眠佳,粪、尿常规正常.体重无改变.
高压氧治疗对大面积脑梗死恢复期患者肢体运动功能的影响

目的 观察高压氧治疗对大面积脑梗死患者肢体运动功能恢复的促进作用.方法 50例脑梗死住院患者,分成高压氧治疗组和常规治疗组,2组患者均给予常规药物治疗,高压氧治疗组另加入高压氧治疗,每日1次,共20次.观察治疗前、后患者神经功能缺损评分、运动功能和ADL评分变化.结果 治疗后,2组各项功能评分均较治疗前有明显改善(P<0.05),高压氧组疗效优于常规治疗组(P<0.05).结论 在常规药物治疗的基础上增加高压氧治疗能明显促进大面积脑梗死患者运动功能的恢复.
右侧精囊原发小圆细胞肿瘤一例

患者男,20岁.主因尿急、尿频,右侧大腿活动受限,于2009年2月8日收入院,无发热、体重减轻.实验室检查:癌胚抗原121.70μg/L(参考值:0～3.40μg/L);白细胞:5.60×10~9/L(参考值4.00×10~9/L～10.00×10~9/L),中性粒细胞百分比为83.90%(参考值:50.00%～70.00%),淋巴细胞百分比为9.40%(参考值:20.00%～40.00%),红细胞为4.28×10~(12)/L(参考值:4.38×1012/L～5.86×10~(12)/L),红细胞压积为39.30%(参考值:40.00%～52.00%).
甲状软骨窗径路治疗特殊的喉深部病变二例

少数声带深层甚至声门旁间隙内病变,应用显微喉镜手术或黏膜损伤过多,或不易暴露;而传统的喉外科手术,包括喉裂开术、喉部分切除术,以及经舌甲膜或咽侧(梨状窝)径路等,从手术的创伤度和术后嗓音功能的保护来看,亦有其局限性.
心血管疾病抗栓抗凝药物治疗中临床药师的干预

目的:从抗栓杭凝药物应用方面探讨临床药师开展临床药学工作在心血管疾病治疗中的作用.方法:临床药师在参与临床查房工作中发挥药物知识比较全面的优势,从治疗方案中抗栓、抗凝药物用法用量、不良反应、用药教育、相互作用等方面入手,规范抗栓抗凝药物的应用.结果:通过临床药师对抗栓抗凝药物用药进行干预,提高了临床药物治疗水平.结论:在提高抗栓、抗凝药物治疗水平的同时也提升了药师的综合素质,使药物应用更有效、更合理.
黄连的炮制历史沿革及其炮制品现代研究进展

目的:研究黄连不同炮制品的炮制机制.方法:在查阅中医药古籍的基础上,论述了黄连的炮制历史沿革,总结出了黄连的27种不同的炮制方法,对黄连的27种炮制方法进行了整理,理清了黄连的炮制发展过程.结果:通过对黄连炮制品现代研究的文献整理,分析了黄连的现代研究状况,并对黄连炮制品的后续研究工作提出了一些想法.结论:应该从药物的"三个层次多维结构"的物质基础入手,结合炮制前后物质基础各成分、组分ADME特性来研究黄连不同炮制品的炮制机制.
关于加强乡村医生队伍建设的意见

各省、自治区、直辖市卫生厅局、财政厅局:乡村医生队伍是我国卫生技术队伍的重要组成部分.为进一步规范乡村医生队伍管理,提高服务素质,保证农村居民获得均等化的公共卫生服务和安全、有效、方便、价廉的基本医疗服务,根据<中共中央国务院关于深化医药卫生体制改革的意见>(中发[2009]6号)、<国务院关于印发医药卫生体制改革近期重点实施方案(2009～2011年)的通知>(国发[2009]12号)等有关文件要求,现就加强乡村医生队伍建设提出以下意见:
基于bootstrap方法的组间判决

在临床实践中,当针对某种疾病出现一种新的干预手段,例如新药、新的诊断方法或者新疗法等时,经常需要判断新的干预手段与已有的干预手段是否有类似的效果.在医学实践中所得到的数据有其特殊性.首先,试验数据的概率分布通常是未知的,并且经常不满足正态性.其次,数据的样本量比较小,有时甚至只有三五个.最后,由于试验对象的个体性差异,数据的变异往往比较大.
2009年度国家自然科学基金项目申请与资助情况综述及2010年管理工作新举措

2009年度国家自然科学基金经费预算继续保持增长态势,从2008年度的52亿元增加到63亿元,共安排资助计划71亿元.国家自然科学基金委员会(以下简称自然科学基金委)根据"更加侧重基础、更加侧重前沿、更加侧重人才"的战略导向,准确把握项目定位和资助政策,认真组织评审工作,着力提高评审质量和资助效益,圆满完成了项目评审与资助工作.
小剂量红霉素口服辅助治疗巨细胞病毒感染的疗效观察

巨细胞病毒感染(cytomegalovirus infection)是由人巨细胞病毒(cytomegalovirus,CMV)所引起的.大多数人感染后没有症状,但在免疫力低下或缺陷的特殊人群如胎儿、新生儿、婴幼儿、先天性免疫缺陷病、器官移植和艾滋病患者则可发生致命性感染;它也是引起先天性缺陷的主要原因.
优质高产小麦新品种中优335的选育

中优335是中国农业科学院作物科学研究所小麦改良中心培育的优质、高产小麦新品种,组合为中优9701/CA9553.中优335兼有双亲优点,实现了优质与高产较好地结合,2009年8月通过天津市品种审定,审定号为津审麦2009002.
粉尘分类及其采样与采样器的研究进展

我国是尘肺危害最严重的国家[1].尘肺防治工作是我国职业卫生工作的重点之一,到目前为止,积累了大量的粉尘检测数据.随着职业卫生工作国际交流的日益增多,早在加世纪90年代末,国际上已意识到各国职业卫生使用的粉尘分类标准、采样方法和采样仪器并不完全一致,获得的粉尘检测结果只适合本国使用[2].
唐山市售蔬菜和水果中有机磷及氨基甲酸酯类农药残留情况

目的 了解唐山市售蔬菜及水果中有机磷及氨基甲酸酯类农药残留的情况.方法 在唐山市路北区和路南区的各大农贸市场及超市销售点通过网格布点法选取10个采样点(路北区取6个,路南区取4个)进行采样,采用酶抑制法对12种蔬菜(包括白菜、菠菜、韭菜、油菜、芹菜、蒜苔、西红柿、豆角、黄瓜、洋葱、胡萝卜、土豆)以及6种水果(包括苹果、梨、香蕉、草莓、橙子、桂圆)中的有机磷及氨基甲酸酯类农药残留量进行测量.结果 共采集蔬菜样品240份,其中农药残留总检出率为97.9%,超标率3.75%.水果样品120份,其中农药残留总检出率为93.3%,超标率0%.各采样点间各种蔬菜、水果农药残留状况无明显差别.结论 唐山市售蔬菜、水果中普遍存在着有机磷及氨基甲酸酯类农药残留.
甲状腺滤泡性癌的超声诊断及误诊分析

随着高频超声的发展,超声已成为目前诊断甲状腺疾病的主要检查手段.本研究就39例滤泡性癌的超声图像、病理及临床资料进行回顾性分析,拟探讨甲状腺滤泡性癌的超声图像特征.
经皮骶髂关节空心螺钉联合骨盆外固定架治疗C型骨盆骨折48例

17%骨盆骨折属不稳定型~([1-3]),TileC型骨盆骨折是同时存在旋转和垂直两个方向不稳定的骨盆骨折.近年经皮骶髂螺钉固定技术得到广泛应用~([2-5]).2001年3月-2007年7月,笔者采用经皮骶髂螺钉固定技术联合骨盆外固定架治疗48例Tile c型骨瓮骨折患者(经皮组),疗效满意.现报告如下.
汶川地震后1个月内不同受灾群体心理应激状况调查

地震等突发灾难作为一种社会性的应激源,是一种使个体产生无法抵御的感觉并失去控制的情境,远超受灾者的应付能力,个体会产生生理、神经内分泌、神经生化、免疫功能及一系列心理行为变化.
老年肺结核病人生活满意度及影响因素分析

中国是世界上结核病负担最重的22个国家之一,其病例总数位居第2~([1]),同时也是世界上老年人口最多的国家~([2]).随着医学模式的转变,人们已逐渐认识到医疗的目的不只是生命的延长,也应注重生活质量,生活质量的测量能够作为评价治疗结果的终点和治疗反应的预测~([3]),也能提供有关康复重要的信息和适当的三级干预~([4]).
Oxidative coupling of methane over La-promoted CaO catalysts:Influence of precursors and catalyst preparation method

The oxidative coupling of methane to C_2 hydrocarbons has been studied over a series of La-promoted CaO(La/Ca=0.05)catalysts,prepared using different precursor salts for CaO and La_2O_3(viz.acetates,carbonates,nitrates and hydroxides)and catalyst preparation methods(viz.physical mixing of precursors,co-precipitation using ammonium carbonate/sodium carbonate as a precipitating agent),under different reaction strength distribution of the catalysts have also been investigated.The surface properties and catalytic activity/selectivity of the La-promoted CaO catalysts vary from catalyst to catalyst depending on the catalyst precursors used and catalyst preparation method.The basicity/base strength distribution is strongly influenced by the precursors(for CaO and La_2O_3)and catalyst preparation method.Basicity(total and strong basic sites measured in terms of CO_2 chemisorbed at 50℃ and 500℃,respectively)observed for the catalyst prepared by co-precipitation method is higher than that of the catalysts prepared by physical mixing method.The catalysts prepared by the nitrates of La-and Ca-and coprecipitated by the solution of sodium carbonate and ammonium carbonate exhibit different catalytic performance in OCM.The finding that no direct relationship between the surface basicity and catalytic activity/selectivity in OCM exists indicates that basicity is not solely responsible for obtaining high selectivity to C_2 hydrocarbons.
Ce-promoted Mn/Na_2WO_4/SiO_2 catalyst for oxidative coupling of methane at atmospheric pressure

A series of Ce-promoted Mn-Na_2WO_4/SiO_2 catalysts were prepared by incipient wetness impregnation method,and their catalytic performance for oxidative coupling of methane(OCM)was investigated at atmospheric pressure in a micro-quartz-tube reactor.The catalysts were characterized by X-ray diffraction(XRD),temperature program reduction(TPR)and BET surface area.Ce promoter increased surface area and Na_2WO_4 species dispersion,which enriched the amount of the surface species.In addition,Ce promoter increased the Na/W species reduction,but the reduction peak shifted to higher temperature.Stability test of 5wt%Ce catalyst indicated suitable performance and stability.The selectivity and yield of C_(2+) hydrocarbons after 50 h operation reached 65.5% and 19.6%,respectively,at 840℃ over 5wt%Ce-2wt%Mn-5wt%Na_2WO_4/SiO_2 catalyst.
Kinetic models of natural gas combustion in an internal combustion engine

In this study,combustion of methane was simulated using four kinetic models of methane in CHEMKIN 4.1.1 for 0-D closed internal combustion(IC)engine reactor.Two detailed(GRIMECH3.0 & UBC MECH2.0)and two reduced(One step & Four steps)models were examined for various IC engine designs.The detailed models(GRIMECH3.0,& UBC MECH2.0)and 4-step models successfully predicted the combustion while global model was unable to predict any combustion reaction.This study illustrated that the detailed model showed good concordances in the prediction of chamber pressure,temperature and major combustion species profiles.The detailed models also exhibited the capabilities to predict the pollutants formation in an IC engine while the reduced schemes showed failure in the prediction of pollutants emissions.Although,there are discrepancies among the profiles of four considered model,the detailed models(GRIMECH3.0 & UBC MECH2.0)produced the acceptable agreement in the species prediction and formation of pollutants.
NODAL O(h~4)-SUPERCONVERGENCE IN 3D BY AVERAGING PIECEWISE LINEAR, BILINEARR, AND TRILINEAR FE APPROXIMATIONS

We construct and analyse a nodal O(h~4)-superconvergent FE scheme for approximating the Poisson equation with homogeneous boundary conditions in three-dimensional domains by means of piecewise trilinear functions.The scheme is based on averaging the equations that arise from FE approximations on uniform cubic, tetrahedral, and prismatic partitions.This approach presents a three-dimeusional generalization of a two-dimensional averaging of linear and bilinear elements which also exhibits nodal O(h~4)-superconvergence (ultracon-vergence).The obtained superconvergence result is illustrated by two numerical examples.
缺氧缺血性脑病患儿有核红细胞致白细胞计数分类失误1例

本科遇见1例新生儿缺氧缺血性脑病(HIE)患儿,行外周血液常规检查时因有核红细胞(NRBC)过高引起白细胞计数和分类严重失误,报道如下.
iQ200尿沉渣分析仪在尿路感染诊断中的应用

目前诊断尿路感染的最主要的方法是中段尿的细菌培养,但整个过程耗时常超过48 h.iQ200全自动尿沉渣分析仪(简称i0200)能快速、定量分析尿液中包括细菌在内的多种有形成分.本研究旨在探讨应用iQ200对尿路感染可疑标本进行快速筛查的可能性.
血管紧张素Ⅱ受体拮抗剂抗心房颤动的研究进展

心房颤动(Af)是临床上最常见的快速性心律失常之一,有较高的致残率和致死率,是脑卒中最强的独立危险因素,15%的脑卒中事件与Af有关~([1]).因此,恢复窦性心律不仅可改善症状,而且可减少血栓栓塞,降低患者死亡率.临床上,Af多发于高血压、慢性心力衰竭、冠心病及瓣膜病变等基础病变之上,随着人口老龄化进程,Af的发生率不断增高,有关Af的预防,尤其是高危人群Af的预防具有重要的理论和临床意义.
战斗机热应激指数的应用研究

对美国预测夏季昼间战斗机低空飞行时座舱内热负荷强度的重要指标战斗机热应激指数(fighter index of thermal stress,FITS)进行了应用性试验.选用受试者6名为均已热习服的健康男性青年.试验选择了分别代表FITS警惕区和危险区的温度值和湿度值(分别称为甲组和乙组).着装条件按中国飞行员配穿个体防护装备.每次暴露时间为90 min.测量环境温度、湿度、皮肤温度、直肠温度、出汗量、心率等指标.结果 显示,试验期间甲、乙两组的温度和湿度控制精度均满足了试验要求,受试者生理指标变化与FIFS警惕区和危险区的相应生理指标变化接近.提示,该指数有应用于中国空军的可能性.
针刺加运动疗法治疗颞颌关节紊乱综合征的临床观察

颞颌关节紊乱综合征是一种常见病,主要症状有关节疼痛、酸胀、关节弹响、张口受限,进食、语言均受影响.部分患者反复发作,久治不愈.治疗常采用药物(消炎、止痛、活血)、理疗等方法,但见效慢,疼痛、关节紧张和粘连无法快速减轻.本研究治疗的65例颞颌关节紊乱综合征,大多数为多方法治疗无效或疗效不显著者,我们应用针刺加运动疗法~([1])治疗颞颌关节紊乱综合征,见效快,效果好,现报告如下.
Identification of Colletotrichum spp. isolated from strawberry in Zhejiang Province and Shanghai City, China

Strawberry anthracnose, caused by Colletotrichum spp., is a major disease of cultivated strawberry. This study identifies 31 isolates of Colletotrichum spp. which cause strawberry anthracnose in Zhejiang Province and Shanghai City, China. Eleven isolates were identified as C. acutatum, 10 as C. gloeosporioides and 10 as C. fragariae based on morphological characteristics, phylogenetic and sequence analyses. Species-specific polymerase chain reaction (PCR) and enzyme digestion further confirmed the identification of the Colletotrichum spp., demonstrating that these three species are currently the causal agents of strawberry anthracnose in the studied regions. Based on analysis of rDNA internal transcribed spacers (ITS) sequences, sequences of all C. acutatum were identical, and little genetic variability was observed between C. fragariae and C. gloeosporioides. However, the conservative nature of the Mvnl specific site from isolates of C. gloeosporioides was confirmed, and this site could be used to differentiate C. gloeosporioides from C. fragafiae.
坏死增生性淋巴结炎伴血尿1例

坏死增生性淋巴结病(NHL)又称坏死性淋巴结炎,以长期发热,痛性淋巴结肿大,白细胞减少,抗生素治疗无效,对激素反应良好为主要表现.本病临床相对少见,易与传染性单核细胞增多症、淋巴结结核、恶性淋巴瘤等疾病混淆,加之临床医生对本病认识不足,容易导致误诊误治,给患者带来不必要的经济及身体负担.
阿立哌唑治疗Tourette综合征对照研究

目的 探讨阿立哌唑治疗Tourette综合征(TS)的疗效和安全性.方法 将82例TS患者按入组顺序分为研究组和对照组后分别予阿立哌唑(5～30 mg/d)和氟哌啶醇(6～16 mg/d)治疗8周.采用耶鲁抽动严重程度总体量表(YGTSS)、副反应量表(TESS)于治疗前、治疗第2、4、8周末对两组进行评估.结果 研究组和治疗组在治疗第2、4、8周末两组YGTSS总分均较治疗前明显下降,差异均有统计学意义( t 值为13.60～13.89和15.37～16.66, P 均小于0.001).两组间治疗前和治疗的第2、4、8周末YGTSS总分和减分率的差异均无统计学意义(总分差异主效应 F =0.41, P =0.80;减分率差异主效应 F=0.38, P =0.77),治疗的第2、4、8周末研究组TESS分低于对照组(秩和检验 P 均小于0.05).结论 阿立哌唑治疗TS的疗效与氟哌啶醇相当,且副作用较轻.
微血管减压术治疗脑神经疾病的并发症分析

微血管减压术就是采用显微外科处理方法,移开与脑神经根有关的压迫血管,采用减压材料如涤纶片、Tefflon毡及明胶海绵等隔开血管和神经,达到术后症状改善的方法.作者所在单位自1982年5月至1998年12月间,采用微血管减压治疗脑神经疾病, 经过门诊或信函随访,资料完整的共计1174例,现对术中、术后的出现的并发症进行分析,报告如下.
支气管舒张试验在急性发作哮喘诊断中的价值

哮喘是儿科最常见的呼吸道疾病之一,其发病率呈逐年上升趋势[1].气道阻塞的可逆性是哮喘的重要特点之一,而支气管舒张试验作为判断气道可逆性的客观指标,在支气管哮喘的诊断方面成为一个重要依据.
100例先天畸形患儿细胞遗传学分析

染色体病是由于染色体数目或结构异常而引起的一类遗传性疾病,染色体畸变可导致患儿智力低下、发育迟缓及先天畸形等一系列临床症状.先天畸形涉及诸多因素,但遗传因素不容忽视.
肺癌心包内全肺切除术应用带蒂膈肌瓣修补心包缺损42例临床观察

目的 探讨肺癌患者经心包内全肺切除术中应用自体带蒂膈肌瓣修补心包缺损.方法 回顾性分析42例经心包内全肺切除术中应用自体带蒂膈肌瓣修补心包缺损患者的临床资料.结果 42例患者术中无1例因心包切开引起不可逆性心律失常;心包修复后,心电图、心脏彩超无特殊改变,心功能良好.结论 经心包内全肺切除术中应用自体带蒂膈肌瓣是修补心包缺损的理想材料,为心包内全肺切除提供了更满意的辅助条件.
乳腺原发性腺泡细胞癌2例分析并文献复习

腺泡细胞癌常见于涎腺,而乳腺腺泡细胞非常罕见.国外报道仅11例.本院2005-2008年经手术切除乳腺腺泡细胞癌2例,现将其临床表现报道如下,同时结合文献复习,对其进行探讨.
中国前三例甲型H1N1流感流行病学和临床特征分析

2009年4月初,一种由包含猪、禽、人3种流感病毒基因片段的甲型H1N1流感病毒引起的人间感染首先在美国和墨西哥报道,并迅速波及全球.截至2009年6月17日,已有88个国家和地区报道发现感染病例.
成人环状胰腺上消化道造影和CT表现1例

患者女,56岁,1个月前出现呕吐,排便、排气不畅.查体:腹部压痛阴性.外院胃镜示:距门齿约110 cm处十二指肠降部狭窄,狭窄上方明显扩张,于狭窄下方取活检,质硬、无弹性.
脾脏翻转畸形伴左膈下异位肾1例

患者女,70岁.主因"间断右上腹疼痛、腹胀3年,近期加重"来我院就诊.查体:右上腹有轻压痛,Murphy征阳性.影像学检查:B超:①慢性胆囊炎,胆囊结石;②脾脏肿块可疑,建议行CT扫描.腹部CT:脾脏位置较低,脾内面向外,与腹壁贴近,脾门及脾血管亦随之向外,清晰可见.脾外面向内,圆隆而光滑.
Crouzon综合征1例

患儿,男,8岁,因"双侧鼻腔流涕2年"就诊.患儿系足月顺产,父母非近亲结婚,母孕期体健,家族中无此特殊面容者.体检:生命体征平稳,智力发育正常.外观头颅略呈塔状,额骨向顶骨倾斜,双眼球明显突出,眼球运动正常,视力正常,眼距宽,鼻根部凹陷,下颌骨前突,上、下齿呈反咬合,牙列排列不齐.
鼻非霍奇金淋巴瘤导致面部毁容1例

非霍奇金氏淋巴瘤(NHL)是一组起源于淋巴组织的恶性肿瘤,较多发生于结外组织,约占25%～30%,最常见于鼻腔及咽部~([1]),鼻腔、咽部(NK/T)常因表现复杂,容易误诊,确诊有一定难度.我院于2009年1月收治1例NHL患者,延误诊治2年导致面部毁容,报道如下.
改良Moberg推进皮瓣修复指端指腹皮肤缺损的临床观察

端软组织创伤缺损,常伴有骨组织的裸露.临床上多采用Moberg皮瓣推进修复.虽然存在指端和指背侧皮肤坏死的风险,且修复缺损长度不宜超过1.5cm,但因其手术操作简单、术后感觉良好且不再继续损失伤指长度等优点([1]),仍然为许多手外科医师在急诊修复中所采用.
生态化学计量学:探索从个体到生态系统的统一化理论

从1909年丹麦哥本哈根大学Johannes Warming(1841-1924)出版第一本生态学教科书<植物生态学>到现在,生态学经历了100年的发展.作为研究生物与生物、生物与环境相互关系的学科,生态学具有高度的综合性和交叉性,研究的问题也具有复杂性和多尺度的特点.正因为这样的学科特点,传统上生态学家多强调研究对象的特殊性、研究问题的局域性,缺乏统一的理论框架.
多发性骨髓瘤VD方案诱导后两种巩固治疗方法的疗效分析

蛋白酶体抑制剂硼替佐米给多发性骨髓瘤(MM)的治疗带来了革命性进步,使初治MM的完全缓解/接近完全缓解(CR/nCR)率达到25%~[1],与自体造血干细胞移植(ASCT)的疗效相似.本研究回顾性分析了经诱导治疗达nCR以上疗效的患者,应用ASCT或含硼替佐米方案两种不同巩固方法的疗效和预后.
罗格列酮经p38MAPK通路下调胃癌细胞基质金属蛋白酶2表达

在我国,胃癌的死亡率居各类恶性肿瘤之首,侵袭和转移是其主要致死原因.过氧化物酶体增殖物激活受体(PPARγ/)是一类由配体激活的核转录因子,与恶性肿瘤的关系已越来越引起人们的关注.以岁格列酮为代表的唑烷二酮类化合物是一类高亲和力PPARγ激动剂,临床用作胰岛素增敏剂.研究证实PPARγ激动剂对多种肿瘤细胞具有抑制作用,我们前期研究已经发现罗格列酮能够通过非PPARγ依赖途径抑制来源于胃癌转移瘤的SGC-7901细胞的侵袭转移,并可下调基质金属蛋白酶2(MMP-2)的表达~[1].本研究拟在此基础上探讨罗格列酮下调MMP-2表达的分子机制.
压疮防护标识及防护方案的设计与使用

制作醒目的 压疮防护标识并制订系统的防护方案,总结两者结合应用于糖尿病卧床患者的临床效果,主要有:增强护士、家属及陪护感官刺激及压疮防护意识,掌握患者的皮肤动态,准确实施相应方案,从而有效提高压疮防护水平,预防压疮.
中美注册护士考试大纲的比较与启示

目的 通过对中美注册护士考试大纲进行比较,为完善中国内地护士执业资格考试提供借鉴.方法 采取比较研究方法为主,辅以文献研究法.结果 美国注册护士考试大纲更贴近临床护理实践,能较好地满足执业准入水平的要求.中国护士执业资格考试大纲在制订依据、考试内容及考查方式等方面还存在不足.结论 美国注册护士考试大纲为中国考试大纲的修订提供了一定的借鉴,建议对中国护士执业考试大纲进行改革.
股骨头坏死动物模型研讨会纪要

由<中华骨科杂志>编辑部、中华医学会骨科分会关节外科学组联合主办的股骨头坏死动物模型研讨会于2009年9月19日在河南省郑州市召开.四川大学华西医院裴福兴教授,郑州大学附一院王义生教授,西安交通大学附二院王坤正教授,北京中日友好医院郭万首教授,上海交通大学附属第九人民医院朱振安教授,中南大学湘雅医院李康华教授,四川大学华西医院的沈彬副教授、康鹏德副教授,以及<中华骨科杂志>编辑部费起礼教授、胡永成教授出席了本次研讨会,就目前股骨头坏死动物模型研究中取得的进展和存在的问题进行了深入细致的探讨,并达成以下共识.
A new mechanism for the electromagnetic transition γ~*N→N~*(1535)

The helicity amplitude A_(1/2)~P for the electromagnetic transition γ~*N→N~*(1535) is investigated. It is found that a new mechanism γ~*→ qq plays an important role in order to improve the description of this transition. On one hand, the A_(1/2)~P is decreased to fall in the data range at the photon point Q~2=0, while on the other hand, the new mechanism makes the function A_(1/2)~P(Q~2) to decrease more slowly vs increasing Q~2, as required by the data.
Bunch length measurement using a traveling wave RF deflector

RF deflectors can be used for bunch length measurement with high resolution. This paper describes a completed 5-band traveling wave RF deflector and the bunch length measurement of the electron beam produced by the photocathode RF gun of the Shanghai DUV-FEL facility. This is the first time that such a transverse RF deflector has been developed and used to measure the bunch length of picosecond order in China. The deflector's VSWR is 1.06, the whole attenuation 0.5 dB, and the bandwidth 4.77 MHz for VSWR less than 1.1. With a laser pulse width of 8.5 ps, beam energy of 4.2 MeV, and bunch charge of 0.64 nC, the bunch lengths for different RF input power into the deflector were measured, and an averaged rms bunch length of 5.25 ps was obtained. A YAG crystal is used as a screen downstream of the deflector, with the calibrated value of 1 pix = 136 μm.
颈椎前路椎体融合与人工间盘置换术后相邻节段蜕变的前瞻性研究

目的 对颈椎前路椎体融合与人工间盘置换术后相邻节段蜕变情况及其治疗效果进行比较.方法 选择2004年3月-2007年10月收治的单节段退行性颈椎间盘突出患者62例,用随机数字表将其随机分为两组.A组33例,行颈椎前路减压植骨融合术;B组29例,前路椎间盘切除后行Bryan人工间盘假体置换术.两组患者术前及术后均进行颈椎X线检查,应用KellgrenX线颈椎蜕变分级来判定是否出现相邻节段新增蜕变或蜕变加重;应用Odem标准进行术后疗效评价.结果 术后随访时间为12～24个月,平均18个月.术后新出现和加重的相邻节段蜕变患者A组为14例,B组为4例,两组比较差异有统计学意义(χ~2=6.14,P＜0.05);伴有症状的蜕变患者A组为9例,B组为1例,两组间差异有统计学意义(χ~2=4.84,P＜0.05).Odem疗效评价结果,A组优良率为84.8%(28/33),B组为86.2%(25/29),两组间差异无统计学意义(χ~2=0.10,P＞0.05).结论 人工间盘置换术能有效减少相邻节段间盘蜕变,延缓或预防相邻节段蜕变疾病症状的发生.
短期应用胰岛素泵治疗老年2型糖尿病19例临床分析

血糖紊乱是2型糖尿病(T2DM)的主要的病理生理基础,研究表明~([1,2]),严格控制血糖使之达到或接近理想水平是预防和减少糖尿病各种并发症的首要基本措施,但血糖越接近正常,发生低血糖的风险越会增加.本研究采用胰岛素泵持续皮下胰岛素注射(CSII)和多次皮下胰岛素注射(MDI)治疗方法,观察血糖控制结果、胰岛素用量及低血糖发生率,评价两种方法对老年T2DM患者治疗后的疗效和安全性.
急性缺血性脑卒中及脑疝个体化分型脱水治疗

急性缺血性脑卒中(AIS)是指各种原因引起的脑部血流中断,导致局部脑组织缺血缺氧性坏死,发生不可逆性坏死的脑血管病,包括脑动脉粥样硬化性血栓形成、脑栓塞、腔隙性脑梗死等,属于中医学"中风病"范畴.AIS发病后脑体积增大、重量增加,进而发生脑水肿、颅内压增高、脑疝形成,甚则危及生命.
差异性应激对青、老年大鼠海马HSP70 mRNA表达的影响

目的 观察重复低强度强迫游泳应激后青、老年大鼠海马HSP70 mRNA表达及习惯化表达;增强应激强度对青、老年大鼠海马HSP70 mRNA表达的影响.方法 采用反转录-聚合酶链反应(RT-PCR)方法 ,观察重复强迫温水游泳应激导致青年组(2个月龄)、老年组(16个月龄)大鼠海马HSP70 mRNA表达的变化和增强应激强度对HSP70 mRNA表达的影响 .结果 重复强迫温水游泳可导致两组大鼠HSP70 mRNA表达习惯化,当再给予4℃冰水游泳应激时,可引起HSP70 mRNA表达增加;老年组大鼠HSP70 mRNA表达在多时段均低于青年组大鼠(P＜0.05).结论 重复应激可以导致HSP70 mRNA表达习惯化,高强度应激可以逆转低强度应激引起的习惯化效应;老年组大鼠应激后HSP70 mRNA表达在多时段低于青年组大鼠.
提高纺织品功能性的表面涂层

表面涂层的纺织材料有诸多应用和最终产品,可采用熔融聚合物、聚合物分散体或溶液、溶剂型涂层配方或类箔片包覆层对织物进行涂层.根据最终用途,可分为背涂层和面涂层.
人工心脏机械瓣膜二尖瓣、主动脉瓣同期置换术后血栓形成导致急性心肌梗死诱发心源性休克1例

1病例资料患者男性,56岁,因"风湿性心脏病行双瓣膜置换术(DVR)术后5年,突发胸闷、心悸、恶心伴出冷汗2h"于2009年3月30日入院.既往有高血压病史.5年前因风湿性心脏病于我院行"二尖瓣、主动脉瓣机械瓣置换术"(二尖瓣为27号St. Jude双叶机械瓣膜,主动脉瓣为23号CarboMedics双叶机械瓣膜),术后恢复良好,口服华法林抗凝治疗,国际标准化比率(1NR)控制在1.8～2.0.患者术前及术后一直存在快速房颤心律.
A new CFAR ship target detection method in SAR imagery

Many ship target detection methods have been developed since it was verified that ship could be imaged with the space-based SAR systems. Most developed detection methods mostly emphasized ship detection rate but not computation time. By making use of the advantages of the K-distribution CFAR method and two-parameter CFAR method, a new CFAR ship target detection algorithm was proposed. In that new method, we use the K-distribution CFAR method to calculate a global threshold with a certain false-alarm rate. Then the threshold is applied to the whole SAR imagery to determine the possible ship target pixels, and a binary image is given as the preliminary result. Mathematical morphological filter are used to filter the binary image. After that step, we use the two-parameter CFAR method to detect the ship targets. In the step, the local sliding window only works in the possible ship target pixels of the SAR imagery. That step avoids the statistical calculation of the background pixels, so the method proposed can much improve the processing speed. In order to test the new method, two SAR imagery with different background were used, and the detection result shows that that method can work well in different background circumstances with high detection rate. Moreover, a synchronous ship detection experiment was carried out in Qingdao port in October 28, 2005 to verify the new method and one ENVISAT ASAR imagery was acquired to detect ship targets. It can be concluded from the experiment that the new method not only has high detection rate, but also is time-consuming, and is suitable for the operational ship detection system.
基于自抗扰和反馈控制的电液位置同步系统

针对液压伺服系统中的非线性和不确定特性,为了改善双电液位置伺服系统的同步性,设计了基于自抗扰和PID反馈补偿控制的电液位置系统,速度环采用自抗扰控制器,对速度系统的内部扰动和外部扰动进行观测,并加以补偿,实现对速度的控制.并在反馈回路中加入PID控制,提高双侧液压下系统动态同步的品质.仿真实验结果表明,这种方案能满足被控对象对高精度同步控制的要求.
扭力轴疲劳寿命影响因素分析

本文分析了装甲车辆悬挂系统关键承力件--力轴加工工艺的重要环节对疲劳寿命的影响,研究并分析了重要工序对扭力轴疲劳寿命的影响程度,便于扭力轴工艺设计人员关注重点工序的设计和制造情况,提高扭力轴的加工制造水平,保证扭力轴整体性能的稳定性.
我国儿科流感嗜血杆菌耐药分析

流感嗜血杆菌(Haemophilus influenzae,Hi)最初由Pfeiffer在1892年描述,40年后,Pittman确定了6种荚膜分型,a～f型无荚膜型,可作为呼吸道正常菌群也可作为呼吸道和侵袭性感染致病菌.国外报告Hib型(Hib)菌株的携带受各种b型配方疫苗使用的影响(例如蛋白结合疫苗、多糖疫苗).Hi主要引起的感染有儿童肺炎、脑膜炎和菌血症,其中主要由b型菌株引起,而成人社区获得性肺炎、急件中耳炎、急性鼻安炎、慢性支气管炎急性发作通常由无荚膜到菌株引起.
电针配合磁珠耳压戒烟疗效观察

目的 观察电针配合磁珠耳压戒烟的临床疗效与单一针刺治疗的相对差异性.方法 将60例患者随机分成电针配合磁珠耳压组和单一针刺组进行对比观察.结果 电针配合磁珠耳压组的有效率明显高于对照组,P<0.05.结论 电针配合磁珠耳压组优于针刺组,是目前戒烟的较佳方法之一.
原发性肝癌的中医治则与治法探讨

以中医学理论为指导,基于周仲瑛教授诊治疑难杂病的学术思想及对原发性肝癌的认识,以"癌毒"为主线,探索中医药对肝癌治则治法.认为应遵循祛邪扶正和急治其标,缓则治本的原则,在抗癌解毒的基础上,针对性使用清热解毒、疏理气机、活血化瘀、祛湿化痰、清热利湿、软坚散结、益气养血、养阴生津、滋阴补肾、健脾助运等治法,从而提高治疗肝癌的临床疗效.
抢抓机遇创新思维开创新时期会计学会工作新局面

全国地方会计学会会长、秘书长工作会议的召开很有意义.一是会议的议题好.中国会计学会和各地方会计学会经过多年的努力,得到了较好发展,有许多经验需要认真总结,有许多经验需要广泛交流,有许多问题需要深入探讨,下一步的发展更需要大家未雨绸缪,早做安排.以"总结过去、交流经验、研究问题、开拓未来"为主题,符合会计学会工作进一步发展的形势和要求.二是会议的时机好.
我国棒束孢-新记录种-炭角棒束孢Isaria xylariiformis

棒束孢Isaria是Clements & Shear于1931年以粉质棒束孢Isaria farinosa(Holmsk.)Fr作为模式种建立的.Brown & Smith(1957),将原分类于棒束孢中的虫生种移入了拟青霉属Paecilomyces中.之后,Samson(1974)把所有瓶梗瓶形、向上突然变细成细长颈部且分生孢子成链的棒束孢又移入了拟青霉中.
Significance of dredging on sediment denitrification in Meiliang Bay, China: A year long simulation study

An experiment for studying the effects of sediment dredging on denitrification in sediments was carried out through a one-year incubation of undredged (control) and dredged cores in laboratory. Dredging the upper 30 cm of sediment can significantly affect physico-chemical characteristics of sediments. Less degradation of organic matter in the dredged sediments was found during the experiment. Denitrification rates in the sediments were estimated by the acetylene blockage technique, and ranged from 21.6 to 102.7 nmol N_2/(g dry weight (dw)·hr) for the undredged sediment and from 6.9 to 26.9 nmol N_2/(g dw·hr) for dredged sediments. The denitrification rates in the undredged sediments were markedly higher (p < 0.05) than those in the dredged sediments throughout the incubation, with the exception of February 2006. The importance of various environmental factors on denitrification was assessed, which indicated that denitrification was regulated by temperature. Nitrate was probably the key factor limiting denitrification in both undredged and dredged sediments. Organic carbon played some role in determining the denitrification rates in the dredged sediments, but not in the undredged sediments. Sediment dredging influenced the mineralization of organic matter and denitrification in the sedimnent; and therefore changed the pattern of inherent cycling of nitrogen.