|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 学习资源标准的新发展与学习资源的发展趋势显示文摘学习资源的质量和数量直接影响着数字化学习的效果,而学习资源标准的发展又引领着资源建设和共享的实践活动的发展,是学习资源研究和应用的'制高点'。本文详细的介绍了IMS Common Cartridge和SCORM 2.0两个最新的学习资源规范的研究进展,并结合泛在学习的需求,分析和评述了它们各自的特色和不足。在此基础上,本文进一步对未来学习资源形态的可进化性、分布式、社会性、情境性、开放性、复合性等发展趋势做了简要的展望。 | 程罡 徐瑾 余胜泉 | 2009 | 远程教育杂志2009，27，4： | 53 |
| 2 | Identification and mapping of genes for improving yield from Chinese common wild rice (O.rufipogon Griff.) using advanced backcross QTL analysis显示文摘To identify useful genes from wild rice which have been lost or weakened in cultivated rice has become more and more important for modern breeding strategy. In this study, a BC4 population derived from 94W1, an accession of common wild rice (Oryza rufipogon Griff.) from Dongxiang in Jiangxi Province of China, as the donor, and a high-yielding Indica cultivar (O. sativa L.), 'Guichao 2', as the recipient, was used to identify quantitative trait loci (QTL) associated with yield and its components. Based on the analysis for the genotype of BC4F1 population with 87 SSR markers distributed throughout the genome and investigation of the plant height, yield and yield components of BC4F2, a total of 52 QTLs, were detected. Of 7 QTLs associated with grain yield per plant, 2 QTLs on chromosome 2 and chromosome 11 for grain yield, explaining 16% and 11% of the phenotypic variance respectively, were identified. The alleles from Dongxiang common wild rice in those two loci could increase the yield of 'Guichao 2' by | Dejun Li Chuanqing Sun Yongcai Fu Cheng Li Zuofeng Zhu Liang Chen Hongwei Cai Xiangkun Wang | 2002 | Chinese Science Bulletin2002，47，18： | 39 |
| 3 | 基于HHT和CSSD的多域融合自适应脑电特征提取方法显示文摘为改善运动想象脑电信号特征提取的自适应性和实时性,提出一种基于希尔伯特-黄变换(HHT)与共空域子空间分解算法(CSSD)的特征提取方法(HCSSD).在对脑电信号进行预处理的基础上,定义一种相对距离准则优选脑电极组合;计算脑电的Hilbert瞬时能量谱和边际能量谱,以获取脑电的时-频特征,并基于CSSD提取其空域特征,采用串行特征融合策略得到脑电的时-频-空特征;设计学习矢量量化神经网络分类器,实现脑电数据分类.在训练集与测试集间隔一周且减少导联数量的情况下,基于HCSSD对左手小指和舌头的运动想象ECoG脑电数据的平均识别率为92%.实验结果表明:HCSSD在增强特征提取方法的自适应性、改善实时性的同时,提高了脑电信号识别率,为便携式BCI系统在康复领域的应用创造了条件. | 李明爱 崔燕 杨金福 郝冬梅 | 2013 | 电子学报2013，41，12： | 36 |
| 4 | Role of laparoscopic common bile duct exploration in the management of choledocholithiasis显示文摘Surgical fraternity has not yet arrived at any consensus for adequate treatment of choledocholithiasis. Sequential treatment in the form of pre-operative endoscopic retrograde cholangio-pancreatography followed by laparoscopic cholecystectomy(LC) is considered as optimal treatment till date. With refinements in technique and expertise in field of minimal access surgery, many centres in the world have started offering one stage management of choledocholithiasis by LC with laparoscopic common bile duct exploration(LCBDE). Various modalities have been tried for entering into concurrent common bile duct(CBD) [transcystic(TC) vs transcholedochal(TD)], for confirming stone clearance(intraoperative cholangiogram vs choledochoscopy), and for closure of choledochotomy(T-tube vs biliary stent vs primary closure) during LCBDE. Both TC and TD approaches are safe and effective. TD stone extraction is involved with an increased risk of bile leaks and requires more expertise in intra-corporeal suturing and choledochoscopy. Choice depends on number of stones, size of stone, diameter of cystic duct and CBD. This review article was undertaken to evaluate the role of LCBDE for the management of choledocholithiasis. | Nikhil Gupta | 2016 | World Journal of Gastrointestinal Surgery2016，8，5： | 40 |
| 5 | Endoscopic management of postoperative bile leaks显示文摘BACKGROUND: Significant bile leak as an uncommon complication after biliary tract surgery may constitute a serious and difficult management problem. Surgical management of biliary fistulae is associated with high morbidity and mortality. Biliary endoscopic procedures have become the treatment of choice for management of biliary Gstulae. METHODS: Ninety patients presented with bile leaks after cholecystectomy ( open cholecystectomy in 45 patients, cholecystectomy with common bile duct exploration in 20 and laparoscopic cholecystectomy in 25). The presence of bile leaks was confirmed by ERCP and the appearance of bile in percutaneous drainage of abdominal collections. Of the 90 patients with postoperative bile leaks, 18 patients had complete transaction of the common bile duct by ERCP and were subjected to bilioenteric anastomosis. In the remaining patients after cholangiography and localization of the site of bile leaks. therapeutic procedures like sphinctero-tomy, biliary stenting and nasobiliary drainage ( NBD ) were performed. If residual stones were seen in the common bile duct, sphincterotomy was followed by stone extraction using dormia basket. Nasobiliary drain or stents of 7F size were placed according to the standard techniques. The NBD was removed when bile leak stopped and closure of the fistula confirmed cholangiographically. The stents were removed after an interval of 6-8 weeks. RESULTS: Bile leaks in 72 patients occurred in the cystic duct (38 patients), the common bile duct (30 ), and the right hepatic duct (4). Of the 72 patients with post-operative bile leak, 24 had associated retained common bile duct stones and 1 had ascaris in common bile duct. All the 72 patients were subjected to therapeutic procedures including sphincterotomy with stone extraction followed by biliary stenting (24 patients), removal of ascaris and biliary stenting (1), sphincterotomy with biliary stenting (18), sphincterotomy with NBD (12), biliary stenting alone (12), and NBD alone (5). Bile leaks stopped in all patients at a median interval of 3 days (range 3-16 days) after endoscopic in- terventions. No difference was observed in efficacy and in time for the treatment of bile leak by sphincterotomy with endoprosthesis or endoprosthesis alone in patients with bile leak after surgery. CONCLUSIONS: Post-cholecystectomy bile leaks occur most commonly in the cystic duct and associated common bile duct stones are found in one-third of cases. Endoscopic therapy is safe and effective in the management of bile leaks and fistulae after surgery. Sphincterotomy with endoprosthesis or endoprosthesis alone is equally effective in the management of postoperative bile leak. | Naresh Agarwal Barjesh Chander Sharma Sanjay Garg Rakesh Kumar Shiv K Sarin | 2006 | Hepatobiliary & Pancreatic Diseases International2006，5，2： | 33 |
| 6 | 外军无人机数据链的发展现状与趋势显示文摘无人机数据链是无人机的重要组成部分,是飞行器与地面系统联系的纽带。首先按照飞行高度和重量对无人机进行了分类,在此基础上概述了外军无人机数据链的发展现状;然后介绍了几种典型无人机数据链如数字数据链(DDL)、战术通用数据链(TCDL)和Quint网络技术(QNT)数据链的发展和性能,并分析和展望了无人机数据链通用化、安全化、网络化等发展趋势;最后总结了外军无人机数据链发展的经验,希望为从事无人机和数据链研究的工程技术人员提供参考。 | 李桂花 | 2014 | 电讯技术2014，54，6： | 34 |
| 7 | Endoscopic treatment of difficult extrahepatic bile duct stones, EPBD or EST: An anatomic view显示文摘Large bile duct stone(> 10 mm) or multiple stones(≥ 3) are challenging for endoscopists. Endoscopic sphincterotomy(EST) is a routine therapeutic endoscopic retrograde cholangiopancreatography(ERCP) procedure usually used. It is safe and effective, but severe perforation or massive bleeding are the main causes of mortality. Because of the permanent destroy ofOddi sphincter, the use of EST is still controversial. Endoscopic papillary balloon dilation(EPBD) gives another way to open the sphincter. Less incidence of bleeding, perforation and partly preserving the Oddi sphincter's function are the main advantages. But high incidence of post-ERCP pancreatitis becomes a predominant problem. According to the anatomical feature of Oddi sphincter, limited EST + EPBD seems a more reasonable procedure. Compared to the former two procedures, it makes the stone extraction process much easier with lower incidences of short-term and long-term complications. | Jun Ding Fu Li Hong-Yi Zhu Xi-Wen Zhang | 2015 | World Journal of Gastrointestinal Endoscopy2015，7，3： | 29 |
| 8 | Modern approach to cholecysto-choledocholithiasis显示文摘Gallstones and common bile duct calculi are found to be associated in 8%-20% of patients, leading to possible life-threatening complications, such as acute biliary pancreatitis, jaundice and cholangitis. The gold standard of care for gallbladder calculi and isolated common bile duct stones is represented by laparoscopic cholecystectomy and endoscopic retrograde cholangiopancreatography, respectively, while a debate still exists regarding how to treat the two diseases at the same time. Many therapeutic options are also available when the two conditions are associated, including many different types of treatment, which local professionals often administer. The need to limit maximum discomfort and risks for the patients, combined with the economic pressure of reducing costs and utilizing resources, favors single-step procedures. However, a multitude of data fail to strongly demonstrate the superiority of any technique(including a two or multi-step approach), while rigorous clinical trials that include so many different types of treatment are still lacking, and it is most likely unrealistic to conduct them in the future. Therefore, the choice of the best management is often led by the local presence of professional expertise and resources, rather than by a real superiority of one strategy over another. | Lapo Bencini Cinzia Tommasi Roberto Manetti Marco Farsi | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，2： | 28 |
| 9 | Meta-analysis comparison of endoscopic papillary balloon dilatation and endoscopic sphincteropapillotomy显示文摘AIM: To assess endoscopic papillary balloon dilatation (EPBD) and endoscopic sphincteropapillotomy (EST) for common bile duct (CBD) stone removal using a meta-analysis. METHODS: Randomized controlled trials published from 1990 to 2012 comparing EPBD with EST for CBD stone removal were evaluated. This meta-analysis was performed to estimate short-term and long-term com-plications of these two treatments. The fixed random effect model or random effect model was established to analysis the data. Results were obtained by analyz-ing the relative risk, odds ratio, and 95%CI for a given comparison using RevMan 5.1. Statistical significance was defined asP < 0.05. Risk of bias was evaluated us-ing a funnel plot. RESULTS: Of the 1975 patients analyzed, 980 of them were treated with EPBD and 995 were treated with EST. Of the patient population, patients in the EPBDgroup were younger (OR=-1.16, 95%CI:-1.49 to 0.84, P<0.01). There were no significant differences in gender proportion, average size of stones, number of gallstones, previous cholecystectomy, the incidence of duodenal diverticulum, CBD diameter or the total follow-up time between EST and EPBD groups. Com-pared with EST, the total stone clearance in the EPBD group decreased (OR=0.64, 95%CI: 0.42 to 0.96,P=0.03), the use of stone extraction baskets significantly increased (OR=1.91, 95%CI: 1.41 to 2.59, P<0.01), and the incidence of pancreatitis significantly increased (OR=2.79, 95%CI: 1.74 to 4.45, P<0.0001). The incidence of bleeding (OR=0.12, 95%CI: 0.04 to 0.34, P<0.01) and cholecystitis (OR=0.41, 95%CI: 0.20 to 0.84, P=0.02) significantly decreased. The stone re-currence rate also was significantly reduced in EPBD (OR=0.48, 95%CI: 0.26 to 0.90, P=0.02). There were no significant differences between the two groups with the incidence of stone removal at first attempt, hours of operation, total short-term complications and infection, perforation, or acute cholangitis. CONCLUSION: Although the incidence of pancreatitis was higher, the overall stone clearance rate and risk of bleeding was lower with EPBD compared to EST. | Hong-Chuan Zhao Liang He Da-Chen Zhou Xiao-Ping Geng Fa-Ming Pan | 2013 | World Journal of Gastroenterology2013，19，24： | 27 |
| 10 | Causes associated with recurrent choledocholithiasis following therapeutic endoscopic retrograde cholangiopancreatography: A large sample sized retrospective study显示文摘BACKGROUND Recurrence of primary choledocholithiasis commonly occurs after complete removal of stones by therapeutic endoscopic retrograde cholangiopancreatography(ERCP). The potential causes of the recurrence of choledocholithiasis after ERCP are unclear.AIM To analyze the potential causes of the recurrence of choledocholithiasis after ERCP.METHODS The ERCP database of our medical center for the period between January 2007 and January 2016 was retrospectively reviewed, and information regarding eligible patients who had choledocholithiasis recurrence was collected. A 1:1 case-control study was performed for this investigation. Data including general characteristics of the patients, past medical history, ERCP-related factors,common bile duct(CBD)-related factors, laboratory indicators, and treatment was analyzed by univariate and multivariate logistic regression analysis and KaplanMeier analysisly.RESULTS First recurrence of choledocholithiasis occurred in 477 patients; among these patients, the second and several instance(≥ 3 times) recurrence rates were 19.5%and 44.07%, respectively. The average time to first choledocholithiasis recurrence was 21.65 mo. A total of 477 patients who did not have recurrence were selected as a control group. Multivariate logistic regression analysis showed that age > 65 years(odds ratio [OR] = 1.556; P = 0.018), combined history of choledocholithotomy(OR = 2.458; P < 0.01), endoscopic papillary balloon dilation(OR = 5.679; P = 0.000), endoscopic sphincterotomy(OR = 3.463; P = 0.000), CBD stent implantation(OR = 5.780; P = 0.000), multiple ERCP procedures(≥2; OR =2.75; P = 0.000), stones in the intrahepatic bile duct(OR = 2.308; P = 0.000),periampullary diverticula(OR = 1.627; P < 0.01), choledocholithiasis diameter ≥10 mm(OR = 1.599; P < 0.01), bile duct-duodenal fistula(OR = 2.69; P < 0.05),combined biliary tract infections(OR = 1.057; P < 0.01), and no preoperative antibiotic use(OR = 0.528; P < 0.01) were independent risk factors for the recurrence of choledocholithiasis after ERCP.CONCLUSION Patient age greater than 65 years is an independent risk factor for the development of recurrent choledocholithiasis following ERCP, as is history of biliary surgeries, measures during ERCP, and prevention of postoperative complications. | Feng Deng Mi Zhou Ping-Ping Liu Jun-Bo Hong Guo-Hua Li Xiao-Jiang Zhou You-Xiang Chen | 2019 | World Journal of Clinical Cases2019，7，9： | 26 |
| 11 | Common bile duct stones on multidetector computed tomography:Attenuation patterns and detectability显示文摘AIM:To investigate the attenuation patterns and detectability of common bile duct(CBD) stones by multidetector computed tomography(MDCT).METHODS:Between March 2010 and February 2012,191 patients with suspicion of CBD stones undergoing both MDCT and endoscopic retrograde cholangiopancreatography(ERCP) were enrolled and reviewed retrospectively.The attenuation patterns of CBD stones on MDCT were classified as heavily calcified,radiopaque,less radiopaque,or undetectable.The association between the attenuation patterns of CBD stones on MDCT and stone type consisting of pure cholesterol,mixed cholesterol,brown pigment,and black pigment and the factors related to the detectability of CBD stones by MDCT were evaluated.RESULTS:MDCT showed CBD stones in 111 of 130 patients in whom the CBD stones were demonstrated by ERCP with 85.4% sensitivity.The attenuation patterns of CBD stones on MDCT were heavily calcified 34(26%),radiopaque 31(24%),less radiopaque 46(35%),and undetectable 19(15%).The radiopacity of CBD stones differed significantly according to stone type(P < 0.001).From the receiver operating characteristic curve,stone size was useful for the determination of CBD stone by MDCT(area under curve 0.779,P < 0.001) and appropriate cut-off stone size on MDCT was 5 mm.The factors related to detectability of CBD stones on MDCT were age,stone type,and stone size on multivariate analysis(P < 0.05).CONCLUSION:The radiopacity of CBD stones on MDCT differed according to stone type.Stone type and stone size were related to the detectability by MDCT,and appropriate cut-off stone size was 5 mm. | Chang Whan Kim Jae Hyuck Chang Yeon Soo Lim Tae Ho Kim In Seok Lee Sok Won Han | 2013 | World Journal of Gastroenterology2013，19，11： | 24 |
| 12 | Reappraisal of endoscopic papillary balloon dilation for the management of common bile duct stones显示文摘Although endoscopic sphincterotomy(EST) is still considered as a gold standard treatment for common bile duct(CBD) stones in western guideline, endoscopic papillary balloon dilation(EPBD) is commonly used by the endoscopists in Asia as the first-line treatment for CBD stones. Besides the advantages of a technical easy procedure, endoscopic papillary large balloon dilation(EPLBD) can facilitate the removal of large CBD stones.The indication of EPBD is now extended from removal of the small stones by using traditional balloon, to removal of large stones and avoidance of lithotripsy by using large balloon alone or after EST. According to the reports of antegrade papillary balloon dilatation, balloon dilation itself is not the cause of pancreatitis. On the contrary, adequate dilation of papillary orifice can reduce the trauma to the papilla and pancreas by the basket or lithotripter during the procedure of stone extraction. EPLBD alone is as effective as EPLBD with limited EST. Longer ballooning time may be beneficial in EPLBD alone to achieve adequate loosening of papillary orifice. The longer ballooning time does not increase the risk of pancreatitis but may reduce the bleeding episodes in patients with coagulopathy. Slowly inflation of the balloon, but not exceed the diameter of bile duct and tolerance of the patients are important to prevent the complication of perforation. EPBLD alone or with EST are not the sphincter preserved procedures, regular follow up is necessary for early detection and management of CBD stones recurrence. | Kwok-Hung Lai Hoi-Hung Chan Tzung-Jiun Tsai Jin-Shiung Cheng Ping-I Hsu | 2015 | World Journal of Gastrointestinal Endoscopy2015，7，2： | 24 |
| 13 | 转基因水稻基因飘流研究十年回顾显示文摘中国是世界最大的水稻生产国和亚洲栽培稻的起源中心之一。随着中国转基因水稻研发的快速发展,需要研究水稻转基因飘流可能对环境和食品安全带来的潜在风险。基因飘流及其数据是对转基因水稻进行科学评估和监管的重要参数。为此,从2002年开始组建了研究团队,对转基因水稻的基因飘流进行了为期10年的系统研究。取得的结果主要包括:(1)阐明了水稻基因飘流的基本规律,揭示了影响水稻基因飘流的生物学和气象学主控因子。沿水稻开花期的主流风向,采用长方形田间试验设计,分别在三亚、广州和杭州3个点2-3个生长季,研究了纯合转bar基因花粉供体L201或B2(姐妹系,抗除草剂Basta)向19个非转基因受体(包括不育系、常规稻品种、杂交稻F1和普通野生稻)在不同距离上的基因飘流率,明确了转基因向不育系的飘流率最高,向普通栽培稻品种的基因飘流率最低(相邻种植时小于1%或0.1%),向普通野生稻的基因飘流率介于不育系和常规稻之间,向不育系的最大基因飘流率比向普通野生稻和栽培稻要大1-3个数量级;基因飘流率随距离增加呈负指数曲线衰减,且存在急剧降低的'拐点','拐点'的距离与试验点水稻开花期的风速密切相关,广州和杭州为1-2 m,三亚约为5 m;采用圆形、以花粉供体为中心的田间试验设计,以异交结实率很高的不育系博A作受体,清晰地解析了风向与基因飘流率的数值关系,主流和次主流风向下游4个扇区的基因飘流事件累计达90%-96%,而逆风向和侧逆风向4个扇区仅为4%-10%。综上所述,水稻转基因飘流率与常规育成品种间的异交率(一般在1%以下)基本相同,在数量级上转基因并未增加新的风险。(2)建立了以气象资料为参数的水稻花粉扩散和基因飘流普适模型,计算和预测了中国南方稻区17省、市的最大基因飘流阈值距离(maximum threshold distances,MTDs)。受东南季风和地形地貌的影响,中国南方稻区MTDs的空间分布特征为:东西之间有自东向西逐渐减小的趋势,南北之间首先在南方丘陵地区逐渐减小、越过南岭后再向东南沿海地区逐渐增大。(3)利用人工构建的普通野生稻与基因(Bt或bar)飘流后代栽/野F1杂种混栽群体,经多年多代跟踪观察,分析了转基因飘流至普通野生稻后的命运,发现栽/野F1杂种在3-5年后完全消失,混栽群体中检测不到外源的Bt和bar,有理由推测普通野生稻具有自我保护的机制。(4)研究了小规模田间试验中采用花期隔离和布帐隔离措施降低水稻基因飘流率的效果;调查了海南、广东、广西普通野生稻原生境居群与相邻种植的栽培稻花期相遇情况,建立了相应的数据库;研究了基因拆分技术作为生物学限控措施从根本上限控基因飘流的效果;以本研究的结果及对国际上主要农作物基因飘流的调研数据为基础,提出了在水稻基因飘流风险评估和监管中采用分类管理和阈值管理的原则。在10年回顾和科学分析的基础上,对未来研究的重点也进行了展望。 | 贾士荣 袁潜华 王丰 姚克敏 裴新梧 胡凝 王志兴 王旭静 柳武革 钱前 | 2014 | 中国农业科学2014，47，1： | 20 |
| 14 | Intraoperative endoscopic sphincterotomy for common bile duct stones during laparoscopic cholecystectomy显示文摘INTRODUCTION The advent of laparoscopic cholecystectomy(LC)inthe late 1980s gained widespread acceptance withina short period of time and has become the preferredtreatment for symptomatic gallstones,but themanagement of coexisting gallbladder and commonbile duct(CBD)stones has remained controversialbecause the various strategies proposed have theirlimitations.In fact,choledocholithiasis | De Fei Hong Ming Gao Urs Bryner Xiu Jun Cai Yi Ping Mou | 2000 | World Journal of Gastroenterology2000，6，3： | 19 |
| 15 | Outcomes of endoscopic sphincterotomy vs open choledochotomy for common bile duct stones显示文摘BACKGROUND Endoscopic sphincterotomy(EST) for the management of common bile duct stones(CBDS) is used increasingly widely because it is a minimally invasive procedure. However, some clinical practitioners argued that EST may be complicated by post-endoscopic retrograde cholangiopancreatography(ERCP)pancreatitis(PEP) and accompanied by a higher recurrence of CBDS than open choledochotomy(OCT). Whether any differences in outcomes exist between these two approaches for treating CBDS has not been thoroughly elucidated to date.AIM To compare the outcomes of EST vs OCT for the management of CBDS and to clarify the risk factors associated with stone recurrence.METHODS Patients who underwent EST or OCT for CBDS between January 2010 and December 2012 were enrolled in this retrospective study. Follow-up data were obtained through telephone or by searching the medical records. Statistical analysis was carried out for 302 patients who had a follow-up period of at least 5 years or had a recurrence. Propensity score matching(1:1) was performed to adjust for clinical differences. A logistic regression model was used to identify potential risk factors for recurrence, and a receiver operating characteristic(ROC)curve was generated for qualifying independent risk factors.RESULTS In total, 302 patients undergoing successful EST(n = 168) or OCT(n = 134) were enrolled in the study and were followed for a median of 6.3 years. After propensity score matching, 176 patients remained, and all covariates were balanced. EST was associated with significantly shorter time to relieving biliary obstruction, anesthetic duration, procedure time, and hospital stay than OCT(P <0.001). The number of complete stone clearance sessions increased significantly in the EST group(P = 0.009). The overall incidence of complications and mortality did not differ significantly between the two groups. Recurrent CBDS occurred in18.8%(33/176) of the patients overall, but no difference was found between the EST(20.5%, 18/88) and OCT(17.0%, 15/88) groups. Factors associated with CBDS recurrence included common bile duct(CBD) diameter > 15 mm(OR =2.72; 95%CI: 1.26-5.87; P = 0.011), multiple CBDS(OR = 5.09; 95%CI: 2.58-10.07; P< 0.001), and distal CBD angle ≤ 145°(OR = 2.92; 95%CI: 1.54-5.55; P = 0.001). The prediction model incorporating these factors demonstrated an area under the receiver operating characteristic curve of 0.81(95%CI: 0.76-0.87).CONCLUSION EST is superior to OCT with regard to time to biliary obstruction relief, anesthetic duration, procedure time, and hospital stay and is not associated with an increased recurrence rate or mortality compared with OCT in the management of CBDS. | Xiao-Dong Zhou Qiao-Feng Chen Yuan-Yuan Zhang Ming-Ju Yu Chang Zhong Zhi-Jian Liu Guo-Hua Li Xiao-Jiang Zhou Jun-Bo Hong You-Xiang Chen | 2019 | World Journal of Gastroenterology2019，25，4： | 17 |
| 16 | Wheat breeding in northern China: Achievements and technical advances显示文摘Common wheat is the major cereal crop that underpins the food safety of China. Both winter wheat and spring wheat are grown on ~24 million ha. This review aims to summarize the current status of wheat production and breeding progress in the northern wheat production areas of the country, and to review recently advanced technologies being applied in wheat breeding, including the use of dwarf-male-sterile(DMS) wheat, speed breeding and specialized wheat breeding SNP chips. Crossing is the initial step in most breeding programs. DMS wheat is a convenient tool for large scale production of hybrid seed. Speed breeding or accelerated generation turnover attempts to reduce the time taken in cultivar development. Several different SNP chips are high-throughput, genome-wide genotyping platforms for breeding and research. | Hongjie Li Yang Zhou Wenli Xin Yiqin Wei Junling Zhang Lilei Guo | 2019 | The Crop Journal2019，7，6： | 16 |
| 17 | Ursodeoxycholic acid combined with percutaneous transhepatic balloon dilation for management of gallstones after elimination of common bile duct stones显示文摘AIM To evaluate the effectiveness and safety of combined ursodeoxycholic acid and percutaneous transhepatic balloon dilation for management of gallstones after expulsion of common bile duct(CBD) stones.METHODS From April 2014 to May 2016, 15 consecutive patients(6 men and 9 women) aged 45-86(mean, 69.07 ± 9.91) years suffering from CBD stones associated with gallstones were evaluated. Good gallbladder contraction function was confirmed by type B ultrasonography. Dilation of the CBD and cystic duct was detected. Percutaneous transhepatic balloon dilation of the papilla was performed, ursodeoxycholic acid was administered, and all patients had a high-fat diet. All subjects underwent repeated cholangiography, and percutaneous transhepatic removal was carried out in patients with secondary CBD stones originating from the gallbladder. RESULTS All patients underwent percutaneous transhepatic balloon dilation with a primary success rate of 100%. The combined therapy was successful in 86.7% of patients with concomitant CBD stones and gallstones. No remaining stones were detected in the gallbladder. Transient adverse events include abdominal pain(n = 1), abdominal distension(n = 1), and fever(n = 1). Complications were treated successfully via nonsurgical management without long-term complications. No procedure-related mortality occurred. CONCLUSION For patients with concomitant CBD stones and gallstones, after percutaneous transhepatic removal of primary CBD stones, oral ursodeoxycholic acid and a high-fat diet followed by percutaneous transhepatic removal of secondary CBD stones appear to be a feasible and effective option for management of gallstones. | Hai-Yang Chang Chang-Jun Wang Bin Liu Yong-Zheng Wang Wu-Jie Wang Wei Wang Dong Li Yu-Liang | 2018 | World Journal of Gastroenterology2018，24，39： | 15 |
| 18 | Percutaneous transhepatic extraction and balloon dilation for simultaneous gallbladder stones and common bile duct stones:A novel technique显示文摘AIM To evaluate the clinical efficacy and safety of an innovative percutaneous transhepatic extraction and balloon dilation(PTEBD) technique for clearance of gallbladder stones in patients with concomitant stones in the common bile duct(CBD).METHODS The data from 17 consecutive patients who underwent PTEBD for clearance of gallbladder stones were retrospectively analyzed. After removal of the CBD stones by percutaneous transhepatic balloon dilation(PTBD), the gallbladder stones were extracted to the CBD and pushed into the duodenum with a balloon after dilation of the sphincter of Oddi. Large stones were fragmented using a metallic basket. The patients were monitored for immediate adverse events including hemorrhage, perforation, pancreatitis, and cholangitis. During the two-year follow-up, they were monitored for stone recurrence, reflux cholangitis, and other longterm adverse events.RESULTS Gallbladder stones were successfully removed in 16(94.1%) patients. PTEBD was repeated in one patient. The mean hospitalization duration was 15.9 ± 2.2 d. Biliary duct infection and hemorrhage occurred in one(5.9%) patient. No severe adverse events, including pancreatitis or perforation of the gastrointestinal or biliary tract occurred. Neither gallbladder stone recurrence nor refluxing cholangitis had occurred two years after the procedure.CONCLUSION Sequential PTBD and PTEBD are safe and effective for patients with simultaneous gallbladder and CBD stones. These techniques provide a new therapeutic approach for certain subgroups of patients in whom endoscopic retrograde cholangiopancreatography/endoscopic sphincterotomy or surgery is not appropriate. | Bin Liu De-Shun Wu Pi-Kun Cao Yong-Zheng Wang Wu-Jie Wang Wei Wang Hai-Yang Chang Dong Li Xiao Li Yancu Hertzanu Yu-Liang Li | 2018 | World Journal of Gastroenterology2018，24，33： | 15 |
| 19 | Big-data analysis: A clinical pathway on endoscopic retrograde cholangiopancreatography for common bile duct stones显示文摘BACKGROUND A clinical pathway(CP)is a standardized approach for disease management.However,big data-based evidence is rarely involved in CP for related common bile duct(CBD)stones,let alone outcome comparisons before and after CP implementation.AIM To investigate the value of CP implementation in patients with CBD stones undergoing endoscopic retrograde cholangiopancreatography(ERCP).METHODS This retrospective study was conducted at Nanjing Drum Tower Hospital in patients with CBD stones undergoing ERCP from January 2007 to December 2017.The data and outcomes were compared by using univariate and multivariable regression/linear models between the patients who received conventional care(non-pathway group,n=467)and CP care(pathway group,n=2196).RESULTS At baseline,the main differences observed between the two groups were the percentage of patients with multiple stones(P<0.001)and incidence of cholangitis complication(P<0.05).The percentage of antibiotic use and complications in the CP group were significantly less than those in the nonpathway group[adjusted odds ratio(OR)=0.72,95%confidence interval(CI):0.55-0.93,P=0.012,adjusted OR=0.44,95%CI:0.33-0.59,P<0.001,respectively].Patients spent lower costs on hospitalization,operation,nursing,medication,and medical consumable materials(P<0.001 for all),and even experienced shorter length of hospital stay(LOHS)(P<0.001)after the CP implementation.No significant differences in clinical outcomes,readmission rate,or secondary surgery rate were presented between the patients in the non-pathway and CP groups.CONCLUSION Implementing a CP for patients with CBD stones is a safe mode to reduce the LOHS,hospital costs,antibiotic use,and complication rate. | Wei Zhang Bing-Yi Wang Xiao-Yan Du Wei-Wei Fang Han Wu Lei Wang Yu-Zheng Zhuge Xiao-Ping Zou | 2019 | World Journal of Gastroenterology2019，25，8： | 14 |
| 20 | AP1000核电站数字化反应堆保护系统显示文摘三代核电技术AP1000将是我国今后长期发展的核电技术,已经过美国核管理委员会最终设计批准,应用于浙江三门1000 MW核电站。AP1000核电站核反应堆设计采用先进的非能动安全技术与数字化反应堆保护系统。该文介绍了AP1000核电站反应堆保护系统的数字化仪控平台Common Q、反应堆保护系统的总体结构和设计特点等方面的内容。 | 冀焕青 | 2013 | 自动化与仪表2013，28，2： | 13 |
您所在的机构暂未开通此部分的功能，请联系管理员