吴江地区多重耐药鲍曼不动杆菌碳青霉烯酶基因携带情况及同源性

目的了解吴江地区临床分离多重耐药鲍曼不动杆菌(MDRAB)碳青霉烯酶基因携带情况和同源性。方法收集吴江地区3所综合性医院2010年1月—2013年12月临床分离的非重复MDRAB 44株,测定其最低抑菌浓度(MIC);采用聚合酶链反应（PCR）扩增碳青霉烯酶基因OXA 51、OXA 23、OXA 24、OXA 58、IMP、TEM、SHV和GES,脉冲场凝胶电泳(PFGE)分析菌株同源性。结果44株MDRAB主要来源标本为痰（占93.18%）,主要分布在重症监护病房（ICU）、呼吸科和神经外科,各占45.45%、27.27%和13.64%;MDRAB对米诺环素和多粘菌素B均敏感,对哌拉西林、氨苄西林/舒巴坦、头孢他啶、庆大霉素、阿米卡星、环丙沙星耐药率均为100.00%,对亚胺培南和美罗培南耐药率均为97.73%。44株MDRAB均检出OXA 51、OXA 23和TEM基因,其中12株菌GES基因阳性,OXA 58和SHV基因阳性各1株,未检测到OXA 24及IMP基因;MDRAB分为A—G 7个型别,分别为19、3、9、3、1、4、5株。A型主要来源于吴江地区的两所大型综合性医院（吴江第一人民医院和盛泽医院）,吴江第一人民医院未发现B、D和E型;E型仅1株,分布在永鼎医院,其余型别散在分布。结论吴江地区临床分离鲍曼不动杆菌多重耐药严重,基因OXA 23和TEM是鲍曼不动杆菌多重耐药的主要原因,并以A、C型为主,呈克隆性传播。     

强脉冲光治疗雀斑的临床探讨

目的:探讨强脉冲光对面部雀斑的治疗效果.方法:采用强脉冲光治疗仪波长为560nm～1 200nm滤光片治疗181例面部雀斑病变患者,治疗4次～5次,每次时间间隔为3周,每位患者进行对比拍照、记录参数并进行临床疗效评估.结果:181例雀斑患者的显效率为:99.44%(180/181).结论:强脉冲光对雀斑有良好的疗效.     

《世医得效方》之洗方荆叶散特色及医案分析

从方药特色研究危亦林《世医得效方》之洗方荆叶散药物组成、方剂配伍及使用方法 特色,从典型病案探讨荆叶散临床特色功效,得出洗方荆叶散能够活血化瘀,行气止痛,消肿利水,主治一切骨折筋伤导致的瘀血疼痛.提示洗方荆叶散疗效确切、使用简便、安全无不良反应,具有很好的推广应用价值.     

Exposure to organic solvents during cosmetic finishing of cars

The objectives of this study were to assess the exposure to organic solvents during degreasing, washing and polishing of cars, and to obtain information about acute health symptoms in car-finishing workers. Fifteen car shops participated in this study, and at these locations 36 workers had car finishing as their main working task. All 36 car-finishing workers and 17 randomly selected office workers from six of these car shops completed questionnaires on acute health symptoms. Personal monitoring of exposure to organic solvents was carried out in three representative shops. The highest exposure levels were found during degreasing of new cars, the median level of aliphatic hydrocarbons (C9-C13) being 22 p.p.m. (range 7-215 p.p.m.). This exposure level represents 50% (range 20-540%) of the Norwegian 8 h limit value for additive factor for these compounds. Only 28% of the workers used gas respirators regularly during this process. Very low exposure levels were detected during washing of second-hand cars and during polishing processes. The present study shows that car-finishing workers are exposed to high levels of organic solvents only for short periods of time. It seems that they are not adequately protected during these periods. However, the presence of acute symptoms was low, i.e. comparable to the prevalences in the reference group.     

中医药内服外治外阴白斑临床疗效研究

目的:本文旨在探索中药内服外用治疗外阴白斑。方法:将600例患者按治疗方案不同分为三组。治疗Ⅰ组:150例,口服中药,患部中药洗剂蘸洗、自制白斑软膏涂抹;治疗Ⅱ组:185例,无口服药,其它治疗同Ⅰ组;治疗Ⅲ组:265例,单独外用白斑软膏。结果:治疗Ⅰ组痊愈68%(102例),显效26.7%(40例),有效5.3%(8例),无效0%;治疗Ⅱ组痊愈11.4%(21人),基本治愈14.1%(26例),好转63.8%(118例),无效10.8%(20例);治疗Ⅲ组痊愈1.1%(3例),显效2.6%(7例),有效46.0%(122例),无效50.2%(133例)。结论:内服中药外用中药洗剂和白斑软膏治疗外阴白斑取得明显效果。     

Photocatalytic Activity of Silicon Nanowires Decorated with PbS Nanoparticles Deposited by Pulsed Laser Deposition for Efficient Wastewater Treatment

The present work aims to study the photocatalytic properties of nanohybrids composed of silicon nanowires (SiNWs) decorated with PbS nanoparticles (NPs). The elaborated material was intended to be utilized in wastewater treatment. The SiNWs were elaborated from the Metal Assisted Chemical Etching route (MACE), while the PbS NPs were deposited at room temperature onto SiNWs using the pulsed laser deposition (PLD) technique. The influence of decorating SiNWs (having different lengths) with PbS-NPs on their structural, morphological, optoelectronic, and photocatalytic properties was scrutinized. PbS/SiNWs nanohybrids exhibited enhanced photocatalytic degradation towards Black Amido (BA) dye for 20 µm SiNWs length and 0.2% of BA volume concentration. These optimized conditions may insinuate that this nanocomposite-like structure is a promising efficient photocatalytic systems contender, cost-effective, and recyclable for organic compound purification from wastewaters.     

低强度脉冲式超声波机械力生物链内源性干细胞激活与功能修复的研究进展

近年来,以低强度脉冲式超声波(LIPUS)为代表的机械力治疗手段已被广泛用于康复医学、骨折修复、神经损伤修复、泌尿系统疾病等领域.目前研究表明,LIPUS可能通过激活内源性干细胞参与组织修复,但是机械力如何通过生物链的转化而激活干细胞的具体机制尚不明确,因此对机械力生物链传导过程的进一步探索有助于揭示LIPUS的作用机...     

New Insight into the Gas Phase Reaction Dynamics in Pulsed Laser Deposition of Multi-Elemental Oxides

The gas-phase reaction dynamics and kinetics in a laser induced plasma are very much dependent on the interactions of the evaporated target material and the background gas. For metal (M) and metal–oxygen (MO) species ablated in an Ar and O₂ background, the expansion dynamics in O₂ are similar to the expansion dynamics in Ar for M⁺ ions with an MO⁺ dissociation energy smaller than O₂. This is different for metal ions with an MO⁺ dissociation energy larger than for O₂. This study shows that the plume expansion in O₂ differentiates itself from the expansion in Ar due to the formation of MO⁺ species. It also shows that at a high oxygen background pressure, the preferred kinetic energy range to form MO species as a result of chemical reactions in an expanding plasma, is up to 5 eV.     

CO2 点阵激光和强脉冲光治疗面部光老化的疗效比较

目的 对CO2点阵激光和强脉冲光治疗面部光老化的效果进行比较。方法 选取我院2017年 1月-2018年1月收治的面部光老化患者100例,随机分为对照组及观察组,各50例。对照组行强脉冲光治疗, 观察组行CO2点阵激光治疗,比较两组治疗效果、不良反应发生率及复发率。结果 观察组治疗总有效率为 96.00%,高于对照组的84.00%（P＜0.05）;观察组不良反应发生率为6.00%,低于对照组的20.00%（P＜0.05）; 观察组复发率为6.00%,低于对照组的22.00%（P＜0.05）。结论 与强脉冲光相比,采用点阵激光技术治疗面 部皮肤光老化,能够有效改善患者的满意程度,治疗后要注意使用抗生素避免皮肤感染,通过多种措施预防 不良反应,为治疗效果提供保证。     

二妙汤加味内服结合外洗治疗湿热浸淫型小儿湿疹72例临床观察

[目的]探讨二妙汤加味内服结合外洗治疗湿热浸淫型小儿湿疹的临床疗效.[方法]选取2018年6—9月天津市西青区妇幼保健和计划生育服务中心就诊的湿热浸淫型湿疹患儿72例,随机分为治疗组(36例)、对照组(36例).对照组给予丁酸氢化可的松乳膏外涂,治疗组给予二妙汤加味内服加外洗治疗.两组均连续治疗4周,观测4周后临床疗效...