维普中文期刊产品整合服务
269篇 您的检索式:作者名="Noman"
    题名 作者 年代 出处 被引量
1Type Ⅰ and type Ⅱ Helicobacter pylori infection status and their impact on gastrin and pepsinogen level in a gastric cancer prevalent area显示文摘BACKGROUND Type I Helicobacter pylori(H.pylori)infection causes severe gastric inflammation and is a predisposing factor for gastric carcinogenesis.However,its infection status in stepwise gastric disease progression in this gastric cancer prevalent area has not been evaluated;it is also not known its impact on commonly used epidemiological gastric cancer risk markers such as gastrin-17(G-17)and pepsinogens(PGs)during clinical practice.AIM To explore the prevalence of type I and type II H.pylori infection status and their impact on G-17 and PG levels in clinical practice.METHODS Thirty-five hundred and seventy-two hospital admitted patients with upper gastrointestinal symptoms were examined,and 523 patients were enrolled in this study.H.pylori infection was confirmed by both 13C-urea breath test and serological assay.Patients were divided into non-atrophic gastritis(NAG),nonatrophic gastritis with erosion(NAGE),chronic atrophic gastritis(CAG),peptic ulcers(PU)and gastric cancer(GC)groups.Their serological G-17,PG I and PG II values and PG I/PG II ratio were also measured.RESULTS A total H.pylori infection rate of 3572 examined patients was 75.9%,the infection rate of 523 enrolled patients was 76.9%,among which type I H.pylori infection accounted for 72.4%(291/402)and type II was 27.6%;88.4%of GC patients were H.pylori positive,and 84.2%of them were type I infection,only 11.6%of GC patients were H.pylori negative.Infection rates of type I H.pylori in NAG,NAGE,CAG,PU and GC groups were 67.9%,62.7%,79.7%,77.6%and 84.2%,respectively.H.pylori infection resulted in significantly higher G-17 and PG II values and decreased PG I/PG II ratio.Both types of H.pylori induced higher G-17 level,but type I strain infection resulted in an increased PG II level and decreased PG I/PG II ratio in NAG,NAGE and CAG groups over uninfected controls.Overall PG I levels showed no difference among all disease groups and in the presence or absence of H.pylori;in stratified analysis,its level was increased in GC and PU patients in H.pylori and type I H.pylori-positive groups.CONCLUSION Type I H.pylori infection is the major form of infection in this geographic region,and a very low percentage(11.6%)of GC patients are not infected by H.pylori.Both types of H.pylori induce an increase in G-17 level,while type I H.pylori is the major strain that affects PG I and PG IIs level and PG I/PG II ratio in stepwise chronic gastric disease.The data provide insights into H.pylori infection status and indicate the necessity and urgency for bacteria eradication and disease prevention in clinical practice.Lin Yuan Jun-Bo Zhao Ying-Lei Zhou Ya-Bin Qi Qiong-Ya Guo Hai-Hui Zhang Muhammad Noman Khan Ling Lan Chang-He Jia Yan-Rui Zhang Song-Ze Ding 2020World Journal of Gastroenterology2020,26,25:29
2Waste heat recovery from heavy-duty diesel engine exhaust gases by medium temperature ORC system显示文摘A medium-temperature waste-heat recovery system based on the organic Rankine cycle (ORC) is designed to recover the exhaust energy from a heavy-duty diesel engine. Analysis of the 1st law of thermodynamics for an ORC system is performed. This analysis contains two parts. The first part is an analysis with undefined heat exchangers to gain an understanding of the ORC and find out suitable organic fluid parameters for a better ORC efficiency. The second part of the analysis uses combined engine test results and two designs of heat exchangers. By comparing the two designs, an improved system of heat exchangers is described. This analysis also quantifies the effect of engine parameters on ORC system. The study concludes that the supercritical Rankine cycle is a better approach towards waste heat recovery. The ORC system is found to perform better under part-load conditions if the medium-high power condition rather than rated working point of the engine is used as the design parameter. The ORC system achieves the highest waste-heat recovery efficiency of up to 10-15% for the optimised heat ex-changer design.WEI MingShan FANG JinLi MA ChaoChen DANISH Syed Noman 2011Science China(Technological Sciences)2011,54,10:16
3Gut bless you:The microbiota-gut-brain axis in irritable bowel syndrome显示文摘Irritable bowel syndrome(IBS)is a common clinical label for medically unexplained gastrointestinal symptoms,recently described as a disturbance of the microbiota-gut-brain axis.Despite decades of research,the pathophysiology of this highly heterogeneous disorder remains elusive.However,a dramatic change in the understanding of the underlying pathophysiological mechanisms surfaced when the importance of gut microbiota protruded the scientific picture.Are we getting any closer to understanding IBS’etiology,or are we drowning in unspecific,conflicting data because we possess limited tools to unravel the cluster of secrets our gut microbiota is concealing?In this comprehensive review we are discussing some of the major important features of IBS and their interaction with gut microbiota,clinical microbiota-altering treatment such as the low FODMAP diet and fecal microbiota transplantation,neuroimaging and methods in microbiota analyses,and current and future challenges with big data analysis in IBS.Eline Margrete Randulff Hillestad Aina van der Meeren Bharat Halandur Nagaraja Ben RenéBjørsvik Noman Haleem Alfonso Benitez-Paez Yolanda Sanz Trygve Hausken Gülen Arslan Lied Arvid Lundervold Birgitte Berentsen 2022World Journal of Gastroenterology2022,28,4:15
4Pancreatic cystic neoplasms:a review of preoperative diagnosis and management显示文摘Pancreatic cystic neoplasms(PCNs) are a diverse group of neoplasms in the pancreas,and are more increasingly encountered with widespread abdominal screening and improved imaging techniques.The most common types of PCNs are serous cystic neoplasms(SCNs),mucinous cystic neoplasms(MCNs),and intraductal papillary mucinous neoplasms(IPMNs).Clinicians frequently feel bewildered in the differential diagnosis and subsequent management among the various types of lesions in the pancreas,which may lead to overtreatment or delayed treatment.The current review provides recent developments in the understanding of the three most common types of PCNs,the latest modalities used in preoperative diagnosis and differential diagnosis,as well as the most up to date management.Suggestions for diagnosis and differential diagnosis of SCNs,MCNs,and IPMNs are also provided for young surgeons.Better understanding of these neoplasms is essential for clinicians to make accurate diagnosis and to provide the best management for patients.Xue-li BAI Qi ZHANG Noman MASOOD Waqas MASOOD Yun ZHANG Ting-bo LIANG 2013Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2013,14,3:11
5Duct-to-mucosa versus invagination pancreaticojejunostomy after pancreaticoduodenectomy: a meta-analysis显示文摘BAI Xue-li ZHANG Qi Noman Masood Waqas Masood GAO Shun-liang ZHANG Yun Shazmeen Shahed LIANG Ting-bo 2013Chinese Medical Journal2013,,22:9
6COMPARISON OF TWO METHODS TO INCREASE TIP CLEARANCE AND ITS EFFECT ON PERFORMANCE OF TURBOCHARGER CENTRIFUGAL COMPRESSOR STAGE显示文摘在片尖端和离心压气机的套之间的尖端清理能通过二个方法被改变:由改变片高度(M1 ) 或由改变套直径(M2 ) 。数字模拟被执行在舞台和 impeller 性能上比较这二个方法和他们的效果。impeller 并且更弥漫通过转子定子边界使用被连接冻结的转子途径。全面阶段性能和流动配置从没有差距为九个尖端清理层次被调查了到 1 公里。Impeller 和更弥漫的表演也独立被介绍。而 M2 在尖端清理的 0.5mm 上面被发现有益,外套和 impeller 性能对在 0.5 公里的尖端清理下面的 M1 比较地更好,这被发现了。有尖端清理的增加的 M1 和 M2 表演表演降级。二个模型为阶段总数压力比率和效率被建议了,它被发现与试验性的结果一致。impeller 效率和压力比率被发现在为两个的 0.1 公里的尖端清理最大最小的更弥漫的有效性也在一样的清理被观察的案例铺平。更弥漫的有效性被发现在为两个盒子的零差距最大。因为让零那么为 unshroudedimpellers 豁开实际上是不可能的,最佳厚度为 M1 和 0.5 公里向前是 0.5 公里更弥漫的有效性的 M2in 术语,这被结束。集体平均流动参数,熵,片装载图和相对压力域被介绍,显示出在有尖端清理的 impeller 经过以内的损失生产。SYED Noman Danish 2007Chinese Journal of Mechanical Engineering2007,20,4:5
7Spatial and seasonal distribution of intertidal macrobenthos with their biomass and functional feeding guilds in the Naf River estuary, Bangladesh显示文摘The Naf River estuary is one of the most productive ecological ecosystems in Bangladesh providing an important feeding area for fishes and other aquatic animals.However,detailed information on macrobenthic communities is rarely available in this area.Our study focused on the seasonal and spatial variability of macrobenthic community structure with their biomass and functional guilds.In total,fortyseven taxa were identified under nine major groups and seven functional feeding guilds.Among macrobenthic taxa,Polychaeta was dominant in both seasons and all over the estuary contributing 60%of total benthos.The mean abundance of macrobenthos was higher during the pre-monsoon(2 972±1 994 inds./m^2)than the monsoon(1 572±361 inds./m^2)being maximum at mid-estuary region and minimum at upper and lower estuary regions.Of the diversity indices,density(P=0.01,P=0.003),the number of taxa(P=0.000 3,P=0.000 9)and Margalef′s Index(P=0.000 4,P=0.001)of macrobenthos were significantly different among stations and seasons.Shannon-Weiner index(P=0.009,P=0.12)and Pielou’s evenness index(P=0.03,P=0.14)had significant differences among stations but not among seasons.Cluster analysis suggested that distribution of macrofauna is strongly influenced by seasonality.Among the feeding types,carnivorous were found to be dominant at the upper and mid-estuarine regions,and herbivorous were at lower estuarine regions.Carnivorous species were dominant in both seasons.Omnivores have shown to be the most abundant feeding type in terms of biomass though herbivores were highest during monsoon.Md. Abu NOMAN MAMUNUR Rashid M SHAHANUL Islam M. Belal HOSSAIN 2019Journal of Oceanology and Limnology2019,37,3:3
8Diversity of bacteria in different life stages and their impact on the development and reproduction of Zeugodacus tau(Diptera:Tephritidae)显示文摘Fruit flies usually harbor diverse communities of bacteria in their digestive systems,which are known to play a significant role in their fitness.However,little information is available on Zeugodacus tau,a polyphagous pest worldwide.This study reports the first extensive analysis of bacterial communities in different life stages and their effect on the development and reproduction of laboratory-reared Z tan.Cultured bacteria were identified using the conventional method and all bacteria were identified by highthroughput technologies(16S ribosomal RNA gene sequencing of V3-V4 region).A total of six bacterial phyla were identified in larvae,pupae,and male and female adult flies,which were distributed into 14 classes,32 orders,58 families and 96 genera.Proteobacteria was the most represented phylum in all the stages except larvae.Enterobacter,Klebsiella,Providencia,and Pseudomonas were identified by conventional and next-generation sequencing analysis in both male and female adult flies,and Enterobacter was found to be the main genus.After being fed with antibiotics from the first instar larvae,bacterial diversity changed markedly in the adult stage.Untreated flies laid eggs and needed 20 days before oviposition while the treated flies showed ovary development inhibited and were not able to lay eggs,probably due to the alteration of the microbiota.These findings provide the cornerstone for unexplored research on bacterial function in Z tau,which will help to develop an environmentally friendly management technique for this kind of harmful insect.MdShibly Noman Ge Shi Li-Jun Liu Zhi-Hong Li 2021Insect Science2021,28,2:3
9Gastric mucosal precancerous lesions in Helicobacter pyloriinfected pediatric patients in central China:A single-center,retrospective investigation显示文摘BACKGROUND Helicobacter pylori(H.pylori)infects about 50%of the world population and is the major cause of chronic gastritis,peptic ulcers,and gastric cancer.Chronic H.pylori infection induces gastric mucosal precancerous lesions mostly in adulthood,and it is debatable whether these pathological conditions can occur in childhood and adolescents as well.Since this is a critical issue to determine if intervention should be offered for this population group,we investigated the gastric mucosal precancerous lesions in pediatric patients in an area in central China with a high prevalence of H.pylori and gastric cancer.AIM To investigate the relationship of H.pylori infection and gastric mucosal precancerous lesions in children and adolescents in central China.METHODS We screened 4258 ward-admitted children and adolescent patients with upper gastrointestinal symptoms,and finally enrolled 1015 pediatric patients with H.pylori infection and endoscopic and histological data.H.pylori infection status was determined by rapid urease test and histopathological examination.Both clinical and pathological data were collected and analyzed retrospectively.Occurrence of gastric mucosal precancerous lesions,inflammatory activity and degree of inflammatory cell infiltration between H.pylori-positive and-negative groups were compared.RESULTS Among the 1015 eligible children and adolescents,the overall H.pylori infection rate was 84.14%(854/1015).The infection rate increased with age.The incidence of gastric mucosal precancerous lesions in H.pylori-infected children was 4.33%(37/854),which included atrophic gastritis(17 cases),intestinal metaplasia(11 cases)and dysplasia(9 cases).In H.pylori-negative patients,only 1 atrophic gastritis case[0.62%,(1/161)]was found(P<0.05).Active inflammation in H.pyloriinfected patients was significantly higher than that in non-infected patients,and the H.pyloriinfected group showed more severe lymphocyte and neutrophil granulocyte infiltration(P<0.001).In addition,endoscopy revealed that the most common findings in H.pylori-positive patients were antral nodularity,but in H.pylori-negative patients only superficial gastritis was observed.CONCLUSION In children and adolescents,gastric mucosal precancerous lesions occurred in 4.33%of H.pyloriinfected patients in central China.These cases included atrophic gastritis,intestinal metaplasia,and dysplasia.The data revealed an obvious critical issue requiring future investigation and intervention for this population group.Miao Yu Jing Ma Xiao-Xia Song Qiao-Qiao Shao Xue-Chun Yu Muhammad Noman Khan Ya-Bin Qi Ruo-Bing Hu Pei-Ru Wei Wei Xiao Bai-Ling Jia Yan-Bo Cheng Ling-Fei Kong Chuan-Liang Chen Song-Ze Ding 2022World Journal of Gastroenterology2022,28,28:2
10Effect of river plume on phytoplankton community structure in Zhujiang River estuary显示文摘To examine the phytoplankton assemblages and the effect of diluted waters on them,a research cruise was conducted from July 19 to August 7,2015 in the Zhujiang(Pearl)River estuary in the northern South China Sea(21°N–23.5°N,111°E–117°E).Samples were collected from 65 stations including one for time-series sampling.A total of 212 phytoplankton taxa were identified from 61 genera belonging to 4 phyla.Among them,122 species identified from 42 genera of Bacillariophyta and 83 species from 15 genera of Pyrrophyta.Chain-forming diatoms dominated the phytoplankton community where Pseudonitzschia delicatissima,Guinardia striata,Thalassionema nitzschioides,and P.pungens comprised about 52%of the total abundance.However,higher cell abundances concentrated on both sides of the estuary,because of low salinity and high nutrients brought by diluted water.In addition,Canonical Correspondence Analysis revealed that salinity and dissolved inorganic nitrogen shaped the species composition in the study area.Furthermore,the Jaccard similarity index showed prevailing high similarity in the distribution of species in low-salinity diluted waters,and the Bray-Curtis similarity depicted distinguished grouping for phytoplankton assemblages along the salinity gradient.However,phytoplankton diel vertical cycles showed maximum abundance occurred at 2:00 am,which was mainly contributed by benthic phytoplankton species Pseudo-nitzschia spp.and T.nitzschioides.Qi ZHONG Bing XUE Md Abu NOMAN Yuqiu WEI Haijiao LIU Hongbin LIU Liping ZHENG Hongmei JING Jun SUN 2021Journal of Oceanology and Limnology2021,39,2:2
11Synthesis of yttrium and cerium doped ZnO nanoparticles as highly inexpensive and stable photocatalysts for hydrogen evolution显示文摘Yttrium and cerium co-doped ZnO nanoparticles were synthesized by combustion route and characterized using X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET),energy dispersive spectroscopy(EDS),X-ray photoelectron spectroscopy(XPS),UV-visible diffuse reflectance spectroscopy(UV-vis DRS),photoluminescence(PL)and electrochemical impedance spectroscopy(EIS)techniques.The introduction of yttrium ions has efficiently increased the relative percentage of Ce^(3+)ions in ZnO.Yttrium and cerium co-doped ZnO shows efficient photo activity for hydrogen evolution(10.61 mmol/((g·h))higher than previously reported optimal value for rare earth codoped ZnO photocatalysts.This remarkably increased hydrogen evolution can be ascribed to the synergy between electronic anchoring effect of Y^(3+)/Y^(2+)and Ce^(4+)/Ce^(3+)redox couples.This report presents new idea for the synthesis of efficient photocatalyst using economical route and ion anchoring effect.The hydrogen evolution was also tested using Na_(2)S and Na_(2)SO_(3)as electron donors under visible light illumination.The synthesized photocatalysts also exhibit high stability.Irshad Ahmad Muhammad Shoaib Akhtar Mian Faisal Manzoor Muhammad Wajid Muhammad Noman Ejaz Ahmed Mukhtar Ahmad Waheed Qamar Khan Anwar M.Rana 2021Journal of Rare Earths2021,39,4:2
12Anti-tumor necrosis factor treatment restores the gut barrier in Crohn’s disease显示文摘Peter Suenaert Veerle Bulteel Liesbeth Lemmens Maja Noman Benny Geypens Gert Van Assche Karel Geboes Jan L Ceuppens Paul Rutgeerts 2002The American Journal of Gastroenterology2002,,8:2
13An Ensemble Learning Based Approach for Detecting and Tracking COVID19 Rumors显示文摘Rumors regarding epidemic diseases such as COVID 19,medicines and treatments,diagnostic methods and public emergencies can have harmful impacts on health and political,social and other aspects of people’s lives,especially during emergency situations and health crises.With huge amounts of content being posted to social media every second during these situations,it becomes very difficult to detect fake news(rumors)that poses threats to the stability and sustainability of the healthcare sector.A rumor is defined as a statement for which truthfulness has not been verified.During COVID 19,people found difficulty in obtaining the most truthful news easily because of the huge amount of unverified information on social media.Several methods have been applied for detecting rumors and tracking their sources for COVID 19-related information.However,very few studies have been conducted for this purpose for the Arabic language,which has unique characteristics.Therefore,this paper proposes a comprehensive approach which includes two phases:detection and tracking.In the detection phase of the study carried out,several standalone and ensemble machine learning methods were applied on the Arcov-19 dataset.A new detection model was used which combined two models:The Genetic Algorithm Based Support Vector Machine(that works on users’and tweets’features)and the stacking ensemble method(that works on tweets’texts).In the tracking phase,several similarity-based techniques were used to obtain the top 1%of similar tweets to a target tweet/post,which helped to find the source of the rumors.The experiments showed interesting results in terms of accuracy,precision,recall and F1-Score for rumor detection(the accuracy reached 92.63%),and showed interesting findings in the tracking phase,in terms of ROUGE L precision,recall and F1-Score for similarity techniques.Sultan Noman Qasem Mohammed Al-Sarem Faisal Saeed 2022Computers, Materials & Continua2022,,1:2
14Sister Mary Joseph's nodule as a first sign of pancreatic cancer显示文摘Sister Mary Joseph's nodule(SMJN) refers to a metastatic tumor of the umbilicus.It is a rare entity which arises from a malignancy in the intra-abdominal cavity.We herein describe a patient who presented with SMJN as his first sign of pancreatic cancer.It is an even more unusual case of SMJN.We therefore,suggest that pancreatic cancer should be included in the differential diagnosis when an umbilical mass is found.With the progress made in surgical procedures and other modalities,an early diagnosis will dramatically improve the prognosis of the patients.Xue-Li Bai Qi Zhang Waqas Masood Noman Masood Yin Tang Chun-Hui Cao Qi-Han Fu Yun Zhang Shun-Liang Gao Ting-Bo Liang 2012World Journal of Gastroenterology2012,18,45:2
15Ornidazole for prophylaxis of postoperative Crohn’s disease recurrence: A randomized, double-blind, placebo-controlled trial显示文摘Paul Rutgeerts Gert van Assche Séverine Vermeire Geert D’Haens Filip Baert Maja Noman Isolde Aerden Gert de Hertogh Karel Geboes Martin Hiele Andre D’Hoore Freddy Penninckx 2005Gastroenterology2005,,4:2
16Levels of C-reactive Protein Are Associated With Response to Infliximab Therapy in Patients With Crohn’s Disease显示文摘Matthias Jürgens Jestinah M. Mahachie John Isabelle Cleynen Fabian Schnitzler Herma Fidder Wouter van Moerkercke Vera Ballet Maja Noman Ilse Hoffman Gert van Assche Paul J. Rutgeerts Kristel van Steen Severine Vermeire 2011Clinical Gastroenterology and Hepatology2011,,5:2
17A bot- tom-up approach to workflow cooperation for short-term virtual en- terprises显示文摘Samir Tata Kais Klai Nomane Ould Ahmod M'bareck 2008IEEE Transactions on Services Computer2008,1,4:1
18Char- acterization of surface oxidation carbon and their influenceon dynamic adsorption显示文摘N V Beck S E Meech P R Noman L A Pears 2001Carbon2001,40,4:1
19Scieening human populations for chromosame aberrations显示文摘Noman A 1985Mutat Res1985,143,:1
20The Unilateral Creation of International Law during the War on Terror: Murder by an Unprivileged Belligerent Is Not a War Crime 显示文摘Noman Goheer 2006New York City Law Review2006,,2:1
返回顶部 每页显示:
共14页 首页 上一页 第1页 下一页 末页 /14 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费