罗比卡因对兔眼表面麻醉作用的实验研究

目的:探讨罗比卡因的表面麻醉作用.方法:14只兔(28只眼) 均分为4组,分别滴入0.75%的布比卡因、罗比卡因、丁卡因和生理盐水,用兔角膜刺激法比较3种局麻药的表面麻醉作用.结果:0.75%的罗比卡因滴入兔眼后3 min即达峰效应,持续15 min以上,其作用与同浓度的布比卡因相似,比同浓度的丁卡因弱(P＜0.05).结论:罗比卡因也有较强的表面麻醉作用.     

胫骨平台骨折Schatzker分型与膝关节功能相关性分析

目的：探讨胫骨平台骨折Schatzker分型与术后膝关节功能相关性。方法选取2010年1月至2014年12月收治的胫骨平台骨折患者120例,根据X线片、CT及三维重建进行Schatzker分型,分为6组,对各组术后膝关节功能进行随访并进行统计学分析。结果经Kruskal‐Wallis检验,6组膝关节功能评价优良等级分布比较差异有统计学意义（P＜0．01）,进一步两两比较,1、2组分别与4、5、6组比较,差异有统计学意义（P＜0．05）。结论胫骨平台骨折Schatzker分型与术后膝关节功能密切相关,Ⅳ、Ⅴ、Ⅵ型骨折术后膝关节功能评分明显较差。     

失碳长春碱联合化疗治疗晚期乳腺癌

目的观察以失碳长春碱（Ｎａｖｅｂｉｎｅ）为主的联合化疗治疗晚期乳癌的近期疗效和毒性。方法用失碳长春碱联合阿霉素或５－氟脲嘧啶或顺铂治疗晚期乳癌２０例。结果可评价疗效的１８例中,部分缓解８例,轻微缓解３例,稳定５例,进展２例,无完全缓解病例,有效率４４．４％。化疗后卡氏评分总体评价较化疗前提高（Ｐ＜０．０１）,有显著性差异。毒性反应主要是骨髓抑制、消化道反应、脱发、静脉炎,神经毒性亦可见到,多为轻度,无麻痹性肠梗阻发生。结论含失碳长春碱的联合化疗治疗晚期乳癌有较好疗效,但骨髓毒性亦较重,使用时应谨慎     

超声复合微泡促进骨髓间充质干细胞归巢对大鼠前列腺炎的治疗作用

目的 研究静脉注射骨髓间充质干细胞(bone marrow mesenchymal stem cells,BMSCs)对大鼠前列腺炎的治疗作用.方法 贴壁法分离、培养、扩增BMSCs.将50只SD大鼠按随机数字表法分为慢性细菌性前列腺炎(chronic bacterial prostatitis,CBP)组、CBP+BMSCs组、CBP+超声复合微泡(microbubble-enhanced therapeutic ultrasound,MEUS)组、CBP+ MEUS+ BMSCs组和正常对照组,每组10只.在小动物超声引导下向大鼠前列腺两侧叶内注射大肠埃希菌建立前列腺炎症模型,注入细菌1～14 d为急性炎症期,4～ 12周为慢性炎症期,对照组注入等量PBS.建模28 d后经静脉单纯注入BMSCs、单纯行MEUS及行MEUS+注入BMSCs,活体成像观察BMSCs向前列腺归巢情况.观察移植BMSCs 2周后大鼠前列腺组织病理学变化并作炎症评分,RT-PCR检测炎症因子IL-1β、TNF-α mRNA,ELISA检测IL-1β、TNF-α蛋白含量,统计分析各组表达差异.结果 前列腺组织病理学提示CBP组、CBP+ BMSCs组、CBP+ MEUS组前列腺呈典型炎症病理变化,腺管上皮增生,层次增加,炎细胞浸润,纤维组织增生,而CBP+ MEUS+ BMSCs组大鼠前列腺炎症明显减轻.RT-PCR检测结果提示CBP组炎症因子IL-1β(0.282±0.067)、TNF-α(0.631 ±0.116),CBP+BMSCs组IL-1[β(0.893 ±0.117)、TNF-α(0.876 ±0.137),CBP+ MEUS组IL-1β(0.683 ±0.097)、TNF-α(0.814±0.127)高于正常对照组IL-1β(0.282±0.067)、TNF-α(0.256±0.059)和CBP+MEUS+BMSCs组IL-1β(0.322±0.086)、TNF-α(0.313 ±0.079) (P ＜0.05);ELISA检测结果显示CBP组炎症因子IL-1β[(315.14±86.08) pg/mL]、TNF-α[(86.41 ±24.32) pg/mL],CBP+BMSCs组IL-1 β[(278.87±72.04) pg/mL]、TNF-α[(67.77±16.98) pg/mL],CBP+ MEUS组IL-1 β[(321.24 ±93.12) pg/mL]、TNF-α[(79.14±19.17) pg/mL]含量均显著高于正常对照组[IL-1β(43.36±11.35) pg/mL、TNF-α(13.26±3.97) pg/mL]和CBP+MEUS+BMSCs组[IL-1 β (65.34±17.23) pg/mL、TNF-α(19.94±5.37) pg/mL],差异有统计学意义(P＜0.01),而CBP+ MEUS+ BMSCs组与正常对照组比较差异无统计学意义(P＞0.05).结论 超声复合微泡促进BMSCs向前列腺归巢,能够减轻前列腺炎症反应,可能为前列腺炎的治疗带来新策略.     

Effects of Corocalm (Shuguan Capsule, 疏冠胶囊) on acute myocardial ischemia in anesthetized dogs

Objective:To investigate the effects of Corocalm (Shuguan Capsule,疏冠胶囊) on acute myocardial ischemia in anesthetized dogs and its possible therapeutic mechanism.Methods:The acute ischemia model was established by ligating the left anterior descending (LAD) artery.Twenty- five dogs were randomly divided into 5 groups (5 clogs in each group):the control group (treated with normal saline 3 mL/kg),the refined Guanxin Capsule group (精制冠心胶囊,GXC 200 mg/kg),high and low dose Corocalm groups (48.5 mg/kg for low dose group and 194.0 mg/kg for high dose group) and the Diltiazem group (5 mg/kg).The animals were treated via a single duodenal administration after the model was established.The experiments used epicardial electrocardiogram (EECG) to measure the scope and degree of myocardial ischemia.Simultaneously,the coronary blood flow (CBF) and serum activity levels of creatine phosphokinase (CK) and lactate dehydrogenase (LDH) were measured by electromagnetic flow meter and automatic biochemical analyzer respectively.The plasma endothelin (ET) content was quantified by radioimmunoassay.Results:Corocalm (48.5 mg/kg and 194.0 mg/kg) significantly decreased the degree and scope of myocardial ischemia,reduced the infarct area,markedly increased the CBF,and inhibited the increase of CK and LDH activities and ET levels induced by myocardial ischemia/infarction.Conclusion:Corocalm could improve the state of acute myocardial ischemia and infarction in dogs.The mechanism of action might be correlated to increasing CBF, inhibiting CK and LDH activities and preventing ET release.     

Impact of Precursor Concentration on Perovskite Crystallization for Efficient Wide-Bandgap Solar Cells

High-crystalline-quality wide-bandgap metal halide perovskite materials that achieve superior performance in perovskite solar cells (PSCs) have been widely explored. Precursor concentration plays a crucial role in the wide-bandgap perovskite crystallization process. Herein, we investigated the influence of precursor concentration on the morphology, crystallinity, optical property, and defect density of perovskite materials and the photoelectric performance of solar cells. We found that the precursor concentration was the key factor for accurately controlling the nucleation and crystal growth process, which determines the crystallization of perovskite materials. The precursor concentration based on Cs_0.05FA_0.8MA_0.15Pb(I_0.84Br_0.16)₃ perovskite was controlled from 0.8 M to 2.3 M. The perovskite grains grow larger with the increase in concentration, while the grain boundary and bulk defect decrease. After regulation and optimization, the champion PSC with the 2.0 M precursor concentration exhibits a power conversion efficiency (PCE) of 21.13%. The management of precursor concentration provides an effective way for obtaining high-crystalline-quality wide-bandgap perovskite materials and high-performance PSCs.     

Experimental and Numerical Study on Uniaxial Compression Failure of Concrete Confined by Nylon Ties

The developments in the cisvil engineering fields have led to an increased demand for structural reinforcements. Therefore, designing an effective, green, convenient, and low-cost reinforcement method is considerably important. Nylon ties have high strength and good heat resistance, and they can retain good tensile properties after high-temperature cooling. Further, they are inexpensive and can be recycled. Thus, they are considered suitable for structural reinforcement engineering. In this study, the core concrete was reinforced by the active confinement of prestressed nylon ties. A uniaxial compression test was performed to evaluate the reinforcement effect of the preload generated by the high-temperature cooling of the tie rod on the core concrete. The results show that nylon ties can effectively improve the mechanical properties of the core concrete. Combined with numerical simulation technology, a damage model of a confined concrete column (CC) was established, and the damage evolution law of CC under uniaxial axial compression was analyzed. Combined with numerical simulation and experimental research, the effectiveness of nylon tie reinforced concrete and the reliability of the damage model were verified, providing a reference for research on engineering reinforcement.     

无张力疝修补术治疗成年人腹股沟疝临床效果评价

目的评价无张力疝修补手术治疗成年人腹股沟疝的疗效。方法回顾性分析402例成年腹股沟疝行无张力疝修补手术临床资料。方法362名患者共施行了402例无张力疝修补术，其中123例行疝环充填式无张力疝修补术，88例行Lichtenstein手术，191例行腹膜前间隙修补术。结果单侧疝及双侧疝平均手术时间分别为37min与83min。术后并发症包括1例切口感染，2例腹股沟区疼痛，4例阴囊血肿，9例尿潴留。腹股沟疝患者均于术后3—9d痊愈出院。88．4％（320／362）病例获得随访，随访时间5-36个月。结论采用无张力疝修补手术治疗成年人腹股沟疝具有安全性高，并发症少，复发率低的优点。     

肝胆管结石并高位胆管狭窄的外科治疗

治疗肝胆管结石并高位胆管狭窄７４例。术中通过高位胆管的充分暴露，１～３级胆管切开整形、肝切除的正确应用，纤维胆道镜检及取石，大口胆肠内引流等多种手术的联合使用，提高了手术疗效，降低了残石率．认为术前详细的路道影像学检查、对手术难度的充分预测、术式的正确选择等非常重要．强调术中病肝切除的重要性．     

军队基层医院临床路径的建立及应用效果评价

目的:探讨了军队基层医院临床路径的建立及其应用效果。方法:以2009年10月至2012年3月某师医院收治的患者为临床路径组,选取同时期另一师医院收治的单纯性腹股沟疝的患者为对照组,对比观察两组的住院天数、平均住院总费用以及满意度。结果:临床路径组与对照组相比,住院天数、平均住院总费用均显著降低,差异具有统计学意义(P<0.05);临床路径组患者的满意率(92.56%)较对照组(72.31%)提高了20.25%(P<0.05),差异具有统计学意义(P<0.05)。医护人员满意率(95.68%)较对照组(74.36%)提高了21.32%(P<0.05),差异具有统计学意义(P<0.05)。结论:临床路径在不影响治疗效果的同时,减少了诊疗护理过程中的医疗缺陷发生率,显著缩短了住院天数,降低了住院费用,提升了患者和医护人员满意度。