Flow Field of Circulating Fluidized Bed Reactor with Venturi Inlet Configuration

Different two-equation k-ε models were used to simulate the gas flow field generated by a new type of circulating fluidized bed reactor with venturi gas distributor. The numerical results were compared with the experimental data. It has been shown that the simulation results from the standard k-ε model have the best match with the experimental data. Based on this model, the gas flow field in the venturi diffuser and riser was analyzed by the concept of velocity nonuniformity and dead zone percentage. Both the nonuniformity of gas velocity and the dead zone percentage reach the maximum at the venturi outlet due to the effect of the vortex. At the same time, it provides a good platform for the further optimization of the inlet configuration of circulating fluidized bed reactor.     

肠梗阻的诊疗现状

肠梗阻是外科常见的急腹症之一，诊断有时比较困难，特别是早期绞窄性肠梗阻易与其他一些疾病混淆如：急性坏死性胰腺炎，输尿管结石，卵巢囊肿扭转等，须做相关的以及特异性检查才能确诊。在治疗上根据病情做出非手术治疗和手术治疗。肠梗阻的手术治疗中除了以往的开放性手术，随着微创外科的迅速发展腹腔镜治疗肠梗阻充分的发挥了它的优势。目前，腹腔镜治疗小肠梗阻手术开展的比较广泛，国内外报道也很多，有关肿瘤、结核、克隆病等引起小肠梗阻的治疗也逐渐多起来。     

罗哌卡因、布比卡因和丁卡因鞍麻用于肛肠手术的临床观察

[目的]探讨等效剂量罗哌卡因、布比卡因和丁卡因鞍麻用于肛肠手术的临床效果的异同,并对其安全性进行评价.[方法]选择择期肛肠手术病人120例,ASAI-II级,体重60~80 kg,随机分为等效剂量罗哌卡因(R)、布比卡因(B)和丁卡因(D)3组,每组40例,合并有高血压、糖尿病病人排除在研究之外.3种药物均采用重比重配方:①0.75%罗哌卡因1.6 mL+10%葡萄糖液1.4 mL;②0.75%布比卡因1 mL+10%葡萄糖液2 mL;③1%丁卡因0.6 mL+10%葡萄糖2.4 mL,分别以硬膜外—腰麻联合阻滞穿刺针穿刺成功后注入蛛网膜下腔,给药后10 m in内测1次/m in,以后5 m in测1次到25 m in,观察感觉阻滞起效时间直到运动恢复时间.若手术时间过长时硬膜外分次追加1.5%利多卡因8~15 mL.[结果]3组病人的年龄、身高、体重、ASA分及和手术时间无明显差异.3组的感觉阻滞起效时间和最大感觉阻滞平面没有显著差异,在最大阻滞时间上R>D(P<0.05);运动阻滞方面,3组的运动阻滞起效时间,B rom age评分及运动恢复时间无统计学差异,但R组达到最大运动阻滞时间明显较其他组长,3组副作用及不良反应发生率无显著差异.[结论]罗哌卡因适用于鞍麻行肛肠手术,与等效剂量的药物鞍麻用于肛肠手术的麻醉效能相似,3种药物的感觉和运动的阻滞起效时间、程度、恢复时间、阻滞平面相似,但R的最大阻滞时间和最大运动阻滞时间较其他两组延长.     

山东省交通医院内镜治疗巨大胆管结石的临床应用研究 肝内外胆管结石不用手术从口中取出来（获省科学技术进步二等奖）

诊疗方法：对胆管结石患者，不用开刀，用内窥镜将结石从口中取出，这项高难技术在山东省交通医院内外镜外科治疗中心得到成功应用。     

信息技术在阅读教学中的作用——《手术台上的指示》教学案例分析

[教学片段] 生（全体）打开自己制作的powerpoint，有感情朗诵诗歌《你是这样的人》。 出示《十里长街送总理》的主题网站，其中有视频、音乐及图片。     

Video-assisted thoracoscopic surgery （VATS） for bilateral primary spontaneous pneumothorax

Objective:To review our experience of the treatment of bilateral primary spontaneous pneumothorax (PSP) by video-assisted thoracoscopic surgery (VATS). Materials and methods: Retrospective chart review was followed by an on-clinic or telephone interview. Patients were cared for by one thoracic surgeon in four medical centers or community hospitals in Northern and Central Taiwan. Thirteen patients with bilateral PSP underwent bilateral VATS simultaneously or sequentially from July 1994 to December 2005. Results: Twelve males and one female, with age ranging from 15 to 36 years (mean 23.1 years), were treated with VATS for bilateral PSP, under the indications of bilateral pneumothoracis simultaneously (n=4) or sequentially (n=9). The interval between the first and second contra-lateral VATS procedure for non-simultaneous PSP patients ranged from 7 d to 6 years. Eleven of 13 patients (84.6%) had prominent pulmonary bullae/blebs, and underwent bullae resection with mechanical or chemical pleurodesis. The mean operative time was (45.6±18.3) min (range 25-96 min) and (120.6±28.7) min (range 84-166 min) respectively for the non-simultaneous (second VATS for the recurrence of contralateral side after first VATS) and simultaneous (bilateral VATS in one operation) procedures. There was no postoperative mortality. However, prolonged air leakage (>7 d) occurred in one patient (7.7%) who recovered after conservative treatment. The mean duration of chest tube drainage was 3.1 d and the median follow up period was 3.4 years. Conclusions: VATS is a safe and effective procedure in the treatment of bilateral PSP. Bilateral VATS is only recommended for patients with simultaneously bilateral PSP, because the incidence of recurrence, even with visible bullae, was not so high in my group and in some previous literature. Bilateral VATS in a supine position should only be used in selective cases, because of possible pleural adhesion or hidden bullae on the posterior side.     

重度妊娠高血压综合征并心衰患者的麻醉处理

妊娠高血压综合征可导致孕产妇和围产儿死亡率增高。妊娠高血压综合征患者出现心衰症状未能得到有效控制，应及时终止妊娠，其中剖宫产围麻醉期处理对母婴安全尤其显得重要。现将我院2005．10～2007．3月对12例重度妊娠高血压综合征并心衰患者实施急诊剖宫产手术的麻醉处理报告如下。     

外伤性肝破裂36例诊治体会

在腹部创伤中 ,肝破裂是较常见的 .特别是随着交通业的不断发展 ,外伤性肝破裂的发病率越来越高 ,虽然多数患者经手术治疗得以康复 ,但少数伤员往往死于严重的致命伤 .本文对我们近 10年来收治的 36例外伤性肝破裂诊治体会进行总结 .1　临床资料1.1　一般资料　　本组 36例 ,其中男 2 7例 ,女 9例 .年龄 7～ 5 2岁 ,平均 2 9岁 .受伤原因为交通事故 2 1例 ,挤压伤 6例 ,刀戳伤 5例 ,坠跌伤 3例 ,枪弹伤 (鸟铳自伤 ) 1例 .闭合性伤 30例 ,开放性伤 6例 .合并其他脏器伤者 2 9例 ,合并伤发生率 80 .6 % ,其中合并脑外伤 11例 ,肺挫伤、气胸 8…     

应用拉氏变换中延迟性质时象函数的唯一性问题

举例说明在应用拉氏变换中延迟性质时。出现不同象函数的原因。从理论上论证了象函数的唯一性。并指出正确解法。     

用于医学的形状记忆纤维

令人惊异的形状记忆聚合物技术是德国亚琛(Aachen)市的Mnemo Science公司开发的，将得到一家美国医药集团C．R．Bard Inc．10亿美元的支持。