检索结果-南通市图书馆

Stents for colorectal obstruction:Past,present,and future

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第2期22卷 842-852页

作者： Eui Joo kim yoon Jae kim Department of Internal Medicine Gachon University Gil Medical CenterIncheon 405-760South Korea

Since the development of uncovered self-expanding metal stents(SEMS) in the 1990 s, endoscopic stents have evolved dramatically. Application of new materialsand new designs has expanded the indications for enteral SEMS. At present, enteral stents are considered the first-line modality for palliative care, and numerous types of enteral stents are under development for extended clinical usage, beyond a merely palliative purpose. Herein, we will discuss the current status and the future development of lower enteral stents.

关键词： Colon Obstruction Stent Self-expandingmetal stents Self-expanding metal stents

Efficacy and safety of newly developed cross-linked dextran gel injection for glans penis augmentation with a novel technique

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2018年第1期20卷 80-84页

作者： Dae yul yang Kyungtae Ko Seong Ho Lee Du Geon Moon Jong Wook kim Won Ki Lee Department of Urology College of Medicine Hallym University Chuncheon Korea Department of Urology College of Medicine Korea University Seoul Korea.

There is no safe and effective standard method for glans penis augmentation. Furthermore, there has been scant research on glans penis augmentation due to a poor understanding of glans anatomy, technical difficulty, and a lack of suitable substances for augmentation. Cross-linked dextran gel is a newly developed filler for soft-tissue augmentation. We evaluated the efficacy and safety of using a novel technique to inject cross-linked dextran gel for glans penis augmentation during a 24-week follow-up study. This prospective, single-arm, multicenter study enrolled twenty healthy adult men who underwent glans penis augmentation between June and August 2013. Cross-linked dextran gel was injected into the glans penis using a simple and easy technique. The sizes of the glans penis and individual satisfaction were assessed. Any adverse event was also reported. A total of 18 individuals were analyzed; two of them were lost to follow-up. The mean procedure time and injected volume were about 30 rain and 6.6 ＋- 0.9 ml, respectively. The mean surface areas of the glans at baseline and 24 weeks were 20.0 _＋ 3.5 cm2 and 33.6 -＋ 5.4 cm2, respectively, representing a mean increase of 68.7% _＋ 14.0% （P 〈 0.001）. Sixteen individuals （88.9%） were satisfied with the outcomes, and none were dissatisfied. There were no serious adverse events during the study. Cross-linked dextran gel injection for glans penis augmentation was easy and showed a significant augmentative effect on the glans penis, good durability, and was well tolerated without serious adverse events. Therefore, cross-linked dextran gel injection may be an effective, new technique for glans penis augmentation.

关键词： cosmetic technique dermal fillers dextran glans penis

Ethnic differences in gastric cancer genetic susceptibility:Allele flips of interleukin gene

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第16期20卷 4558-4565页

作者： Juwon kim yoonjung kim Kyung-A Lee Department of Laboratory Medicine Yonsei University Wonju College of MedicineGangwon-do 220-701South Korea Department of Laboratory Medicine Yonsei University College of MedicineSeoul 135-720South Korea

Polymorphisms in promoter regions of inflammatory cytokines have been widely studied,and potentially functional polymorphisms have been *** results from meta-analyses of interleukin(IL)-1B and IL-10 polymorphisms show differences in gastric cancer susceptibilities between Caucasian and Asian *** particular,we note the suggestion of an allele flip in IL-1B and IL-10 gene *** Asian populations,the IL-1B-1464G/-511C/-31T haplotype indicates risk for gastric cancer,while the opposite haplotype,IL-1B-1464C/-511T/-31C is the risk-related allele in ***,while IL-10-1082G/-819C/-592C is associated with gastric cancer in Asians,IL-10-1082A/-819T/-592T is linked to gastric cancer risk in *** seemingly contradictory results may be attributed to distinct carcinogenic mechanisms underlying the different gastric cancer *** allele flip observed in IL-10 and gastric cancer appears to reflect allelic heterogeneity,similar to that observed in *** this review,we focus on the allele flip phenomenon observed between different ethnic groups in an effort to resolve certain controversial results from recent studies on interleukin *** addition,we re-emphasize the importance of stratifying gastric cancer subtypes based on anatomical site and Lauren classification to prevent false associations arising through dilution of true ones.

关键词： Allele flip Gastric cancer Interleukin gene

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

嗜水气单胞菌细胞提取物特性的分析

浙江大学学报（农业与生命科学版） 2005年第5期31卷 555-560页

作者：沈锦玉余旭平 kim Thompson Alexandra Adams 浙江省淡水水产研究所浙江湖州313001 浙江大学动物科学院浙江杭州310029 Aquaculture of Institute Stirling University

对六株嗜水气单胞菌的全细胞和外膜成份在不同的培养条件下进行SDS-PAGE、免疫转印分析.在同一培养条件下6个供试菌株全细胞的蛋白质电泳图谱不同.同一菌株在五种不同的培养条件下,其蛋白质电泳图谱相似但有差异.6株菌株的细菌外膜提取... 详细信息

对六株嗜水气单胞菌的全细胞和外膜成份在不同的培养条件下进行SDS-PAGE、免疫转印分析.在同一培养条件下6个供试菌株全细胞的蛋白质电泳图谱不同.同一菌株在五种不同的培养条件下,其蛋白质电泳图谱相似但有差异.6株菌株的细菌外膜提取物的蛋白质电泳图谱不同,同一菌株在5种不同的培养条件下,其蛋白质电泳图谱相似但有差异,但所有的图谱均具有34 kDa和30 kDa的条带.用Schiff s试剂,银染及生物素标记(BS-1,ConA,UEA-1)法测定及分析提取物中糖或碳水化合物的特征.生物素标记及经蛋白酶K处理后的所有菌株的提取物均显示不同分子量碳水化合物的条带,但具有相同分子量的条带,其中32 kDa条带被三种生物素及银染所显示,而34 kDa仅被生物素BS-1和UEA-1所识别.经Schiff s试剂染色后,仅出现少量的条带.用免疫转印法测定菌体提取物的抗原性,结果显示,提取物有多条不同的条带被两种血清所识别,且用活菌制备的血清比死菌的要强得多.所有菌株在不同培养条件下的提取物均具35 kDa条带被鱼血清所识别.所以,35 kDa条带可能是嗜水气单胞菌的共同抗原.同时,用ELISA法测定,证明鱼血清与其它菌株间有较强的交叉反应.

关键词：嗜水气单胞菌细菌外膜提取物 SDS-PAGE 免疫转印

Controlling the contact levels of details for fast and precise haptic collision detection

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2017年第8期18卷 1117-1130页

作者： A Ram CHOI Sung Min kim Mee young SUNG Department of Computer Science and Engineering lncheon National University lncheon Korea

For accurate and stable haptic rendering, collision detection for interactive haptic applications has to be done by filling in or covering target objects as tightly as possible with bounding volumes （spheres, axis-aligned bounding boxes, oriented bounding boxes, or polytopes）. In this paper, we propose a method for creating bounding spheres with respect to the contact levels of details （CLOD）, which can fit objects while maintaining the balance between high speed and precision of collision detection. Our method is composed mainly of two parts： bounding sphere formation and two-level collision detection. To specify further, bounding sphere formation can be divided into two steps： creating spheres and clustering spheres. Two-level collision detection has two stages as well： fast detection of spheres and precise detection in spheres. First, bounding spheres are created for initial fast probing to detect collisions of spheres. Once a collision is probed, a more precise detection is executed by examining the distance between a haptie pointer and each mesh inside the colliding boundaries. To achieve this refmed level of detection, a special data structure of a bounding volume needs to be defined to include all mesh information in the sphere. After performing a number of experiments to examine the usefulness and performance of our method, we have concluded that our algorithm is fast and precise enough for haptic simulations. The high speed detection is achieved through the clustering of spheres, while detection precision is realized by voxel-based direct collision detection. Our method retains its originality through the CLOD by distance-based clustering.

关键词： Collision detection Haptic rendering Bounding sphere Clustering Contact levels of details (CLOD)

Nonlinear State Feedback Control of PEM Fuel Cell Systems

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Energy and Power Engineering 2010年第2期4卷 8-14页

作者： E.S. kim C.J. kim Department of Control and Instrumentation Engineering Halla university Wonju 220-712 Republic of Korea Department of Control and lnstrumentation Engineering Halla university Wonju 220-712 Republic of Korea

In this paper, the nonlinear state feedback controller has been developed to control the pressures of the oxygen and the hydrogen in the PEM（Proton Exchange Membrane） fuel cell system. Nonlinear model of the PEM fuel cell system was introduced to study the design problems of the state observer and model based controller. A cascade observer using the filtering technique was used to estimate the pressure derivatives of the cathode and the anode in the system. In order to estimate the pressures of the cathode and the anode, the sliding mode observer was designed by using these pressure derivatives. To estimate the oxygen pressure and the hydrogen pressure in the system, the nonlinear state observer was designed by using the cathode pressure estimates and the anode it. These results will be very useful to design the state feedback controller. The validity of the proposed observers and the controller has been investigated by using a Lyapunov＇s stability analysis strategy.

关键词： PEM fuel cell cascade observer sliding mode state feedback.

Influence of a microscopic positive proximal margin in the treatment of gastric adenocarcinoma of the cardia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2006年第24期12卷 3883-3886页

作者： Jian-Guo Shen Jae-Ho Cheong Woo-Jin Hyung Junuk kim Seung-Ho Choi Sung-Hoon Noh Department of Surgery Yonsei University College ot'Medicine Seoul- 120-752 Korea ' Department of Surgical Oncology Sir Run Run Shaw Hospital College of Medicine Zhejiang University Hangzhou 310016 China

AIM： To investigate the influence of a positive proximal margin in total gastrectorny patients with gastric adenocarcinorna of the cardia. METHODS： Medical records of 191 patients with total gastrectornies for adenocarcinorna of the cardia between 1995 and 2000 were reviewed. The clinicopathologic features associated with a positive margin were determined, and the predictors for survival were analyzed. RESULTS： The incidence of positive proximal margin was 8.4% （16/191）. The positive margins were associated with advanced diseases. The tumor size and the depth of tumor invasion were independent risk factors for a positive margin. The mean survival in the positive margin group was 33.9 mo as *** 62.4 mo in the negative group （P 〈 0.001）. However, the difference in survival lost significance in subgroup analysis according to stage. Multivariate analysis identified that a positive margin was not an independent prognostic factor for survival. CONCLUSION： A positive margin is more of an indication of advanced disease in patients with gastric adenocarcinoma of the cardia rather than an independent prognostic factor for survival.

关键词： Resection margin Gastric cancer Totalgastrectomy Outcome

Endoscopic papillary large balloon dilation in patients with periampullary diverticula

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第41期19卷 7168-7176页

作者： Kook Hyun kim Tae Nyeun kim Division of Gastroenterology and Hepatology Department of Internal medicineYeungnam University College of MedicineDaegu 705-717South Korea

AIM:To evaluate the safety and effectiveness of endoscopic papillary large balloon dilation(EPLBD)for bile duct stone extraction in patients with periampullary ***:The records of 223 patients with large common bile duct stones(≥10 mm)who underwent EPLBD(12-20 mm balloon diameter)with or without limited endoscopic sphincterotomy(ES)from July 2006to April 2011 were retrospectively *** these patients,93(41.7%)had periampullary diverticula(PAD),which was categorized into three *** clinical variables of EPLBD with limited ES(EPLBD+ES)and EPLBD alone were analyzed according to the presence of ***:Patients with PAD were significantly older than those without(75.2±8.8 years vs 69.7±10.9years,P=0.000).The rates of overall stone removal and complete stone removal in the first session were not significantly different between the PAD and nonPAD groups,however,there was significantly less need for mechanical lithotripsy in the PAD group(3.2%vs 11.5%,P=0.026).Overall stone removal rates,complete stone removal rates in the first session and the use of mechanical lithotripsy were not significantly different between EPLBD+ES and EPLBD alone in patients with PAD(96.6%vs 97.1%;72.9%vs 88.2%;and 5.1%vs 0%,respectively).No significant differences with respect to the rates of pancreatitis,perforation,and bleeding were observed between EPLBD+ES and EPLBD alone in the PAD group(3.4%vs 14.7%,P=0.095;0%vs 0%;and 3.4%vs 8.8%,P=0.351,respectively).CONCLUSION:EPLBD with limited ES and EPLBD alone are safe and effective modalities for common bile duct stone removal in patients with PAD,regardless of PAD subtypes.

关键词： Endoscopic papillary large balloon dilation Endoscopic sphincterotomy Periampullary diverticula

Molecular cloning and mRNA expression of peptidoglycan recognition protein (PGRP-6) gene in common carp, Cyprinus carpio

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular cloning and mRNA expression of peptidoglycan recog...