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| 1 | Role of Helicobacter pylori in gastric cancer:Updates显示文摘Helicobacter pylori(H. pylori) infection is highly prevalent in human,affecting nearly half of the world's population; however,infection remains asymptomatic in majority of population. During its co-existence with humans,H. pylori has evolved various strategies to maintain a mild gastritis and limit the immune response of host. On the other side,presence of H.pylori is also associated with increased risk for the development of various gastric pathologies including gastric cancer(GC). A complex combination of host genetics,environmental agents,and bacterial virulence factors are considered to determine the susceptibility as well as the severity of outcome in a subset of individuals. GC is one of the most common cancers and considered as the third most common cause of cancer related death worldwide. Many studies had proved H. pylori as an important risk factor in the development of non-cardia GC. Although both H. pylori infection and GC are showing decreasing trends in the developed world,they still remain a major threat to human population in the developing countries. The current review attempts to highlight recent progress in the field of research on H. pylori induced GC and aims to provide brief insight into H. pylori pathogenesis,the role of major virulence factors of H. pylori that modulates the host environment and transform the normal gastric epithelium to neoplastic one. This review also emphasizes on the mechanistic understanding of how colonization and various virulence attributes of H. pylori as well as the host innate and adaptive immune responses modulate the diverse signaling pathways that leads to different disease outcomes including GC. | Jahanarah Khatoon Ravi Prakash Rai Kashi Nath Prasad | 2016 | World Journal of Gastrointestinal Oncology2016，8，2： | 13 |
| 2 | Firm performance impacts of digitally enabled supply chain integration capabilities显示文摘 | Arun Rai Ravi Patnayakuni Nainika Seth | 2006 | MIS Quarterly2006，30，： | 1 |
| 3 | Firm performance impacts of digitally enabled supply chain integration capabilities显示文摘 | Rai A Ravi P Seth N | 2006 | Mis Quarterly2006，30，2： | 1 |
| 4 | Immune response to Taenia solium cysticerci after anti-parasitic therapy显示文摘 | Aloukick K. Singh Satyendra K. Singh Amrita Singh Kamlesh K. Gupta Jahanarah Khatoon Amit Prasad Ravi P. Rai Rakesh K. Gupta Mukesh Tripathi Nuzhat Husain Kashi N. Prasad | 2015 | International Journal for Parasitology2015，，： | 1 |
| 5 | 肠道准备质量对腺瘤检出率和结肠镜完成率的影响显示文摘背景和目的:充分的肠道准备对于安全有效的结肠镜检查是非常重要的。结肠镜检查的质量指标应达到至少95%的肠镜完成率和至少25%(50岁以上男性)或15%(50岁以上女性)的腺瘤检出率。本研究旨在探讨肠道准备对腺瘤检出率和肠镜完成率的影响。方法:回顾性纳入2008年1月至2009年12月间接受结肠镜检查的病例。主要结局指标是腺瘤检出率和肠镜完成率(抵达盲肠)。结果:共2519例患者纳入研究,其中1030例(41.0%)肠道准备评价为优,1145例(45.5%)评价为良,240例(9.5%)中等,104例(4.1%)评价为差。肠道准备中、差者肠镜完成率分别为75.4%和72.1%,明显低于肠道准备优、良者(分别为99.9%和99.7%,P<0.001),且前者肠镜完成率质量达标(95%)的比例也明显低于后者(P<0.001)。全组患者中肠镜准备优、良、中、差者腺瘤检出率分别为24.2%、26.8%、32.1%和22.1%,差异无统计学意义(P=0.06),各组腺瘤检出率均质量达标(男性25%,女性15%)。其中女性肠道准备优、良者腺瘤检出率相对更高,男性肠道准备优、良、中者腺瘤检出率相对更高(P<0.001)。多因素分析显示,男性患者腺瘤检出率明显增高,但肠道准备质量对腺瘤检出率并无影响。结论:肠道准备中、差者肠镜完成率明显低于肠道准备优、良者,但肠道准备质量对腺瘤检出率并无影响。 | Tarun Rai Udayakumar Navaneethan Tushar Gohel Amareshwar Podugu Prashanthi N.Thota Ravi P.Kiran Rocio Lopez Madhusudhan R.Sanaka | 2016 | Gastroenterology Report2016，4，2： | 1 |
| 6 | Adenoma detection rate in high-risk patients differs from that in average-risk patients显示文摘 | Madhusudhan R. Sanaka Tarun Rai Udaykumar Navaneethan Tushar D. Gohel Amareshwar Podugu Prashanthi N. Thota Rocio Lopez Ravi P. Kiran Carol A. Burke | 2015 | Gastrointestinal Endoscopy2015，，： | 1 |
| 7 | Ultrasonic-assisted synthesis of grapgite- reinforced A1 matrix nanocomposites 显示文摘 | CHRISTY Roshini P NAGASIVAMUN B RAI Baldev RAVI K R | 2015 | Journal of Materials Engineering and Peformance2015，24，6： | 1 |
| 8 | Peroxisome proliferator-activated receptor-α selective ligand reduces adiposity, improves insulin sensitivity and inhibits atherosclerosis in LDL receptor-deficient mice显示文摘 | Rai Ajit K. Srivastava Ravi Jahagirdar Salman Azhar Somesh Sharma Charles L. Bisgaier | 2006 | Molecular and Cellular Biochemistry (-)2006，，1： | 1 |
| 9 | Technology Investment and Business Performance 显示文摘 | Aran Rai Ravi Patnayakuni and Nainika Patnayakuni | 1997 | Commuicationsof the ACM1997，40，： | 1 |
| 10 | Atrazine and simazine degradation in Pennisetum rhizosphere显示文摘 | Neera Singh M. Megharaj Rai S. Kookana Ravi Naidu N. Sethunathan | 2004 | Chemosphere2004，，3： | 1 |
| 11 | Relational Antecedents of Information Flow Integration for Supply Chain Coordination显示文摘 | Patnayakuni Ravi Rai Anm Seth Nainika | 2006 | Journal of Management Information Systems2006，23，1： | 1 |
| 12 | Acetylcholinesterase: a potential biochemical indicator for biomonitoring of fertilizer industry effluent toxicity in freshwater teleost, Channa striatus显示文摘 | Archana Yadav Anita Gopesh Ravi S. Pandey Devendra K. Rai Bechan Sharma | 2009 | Ecotoxicology2009，，3： | 1 |
| 13 | Thermal Comfort Analysis of Personalized Conditioning System and Performance Assessment with Different Radiant Cooling Systems显示文摘The radiant systems consume less energy and provide better thermal comfort as compared to the conventional system,but the main drawback of radiant technology is inability to cater the latent load and condensation.This problem has engaged researchers to push their emphasis on Personalized Conditioning System(PCS).It forms a micro-climate region near the occupant.This study is aimed at PCS combined with a radiant conditioning system,which evaluates the performance of the PCS and compares it with different radiant cooling systems.A radiant cubicle was used to investigate the performance of the PCS for both heating&cooling modes.For heating mode,the Standard Effective Temperature(SET)was calculated with the help of thermal comfort surveys which were in a range of 23.4℃ to 27.3℃.For cooling mode,four different cases compared the performance of the system which are:Conventional Air Conditioning System(CACS),Radiant Cooled Ceiling System(RCCS),Personalized Radiant Conditioning System(PRCS),and both PRCS-RCCS coupled.It was observed that PRCS alone reaches the thermal comfort criteria with low energy consumption.The energy-saving of RCCS-PRCS was achieved 38%when compared with CACS.It can be concluded that PRCS is a new step in the field of thermal comfort. | Vaibhav Rai Khare Ravi Garg Jyotirmay Mathur Vishal Garg | 2023 | Energy and Built Environment2023，4，1： | 0 |
| 14 | 原发性硬化性肝管炎与克罗恩病患者结肠瘤变的风险显示文摘背景与目的:克罗恩病结肠炎(CC)常伴发原发性硬化性肝管炎(PSC)。然而,在CC/PSC患者中结肠癌或瘤变的风险仍不清楚。本研究目的是研究伴或不伴PSC的CC患者结肠瘤变的风险。方法:本研究系巢式病例对照研究,研究对象是1985-2012年间Cleveland Clinic收治的CC合并PSC患者。比较43例CC合并PSC患者(PSC组)与同期159例CC未合并PSC患者(对照组)的结肠瘤变率。结果:43例PCS组患者中有7例(16.3%)出现结肠癌或瘤变,而159例对照组中有22例(13.8%)出现结肠癌或瘤变(P=0.98)。PSC组出现结肠瘤变的7例患者瘤变均发生在近端结肠(脾曲近端),而对照组仅50%(11/22)的瘤变发生在近端结肠(P=0.001)。Cox回归分析显示,男性患者(HR=2.68;95%CI:1.30-5.54;P=0.008)和CC诊断年龄(HR=1.29;95%CI:1.14-1.47;P<0.001)是发生结肠瘤变的独立危险因素,而硫唑嘌呤/6巯基嘌呤的使用则具有保护作用(HR=0.30;95%CI:0.13-0.70;P=0.005)。合并PSC并不会增加结肠腺瘤的发生风险(HR=0.45;95%CI:0.18-1.13;P=0.09)。结论:合并PSC并不会增加CC患者结肠瘤变的风险。在我们这组CC/PSC病例中,结肠瘤变均发生在近端结肠。 | Udayakumar Navaneethan Tarun Rai Preethi GK Venkatesh Ravi P Kiran | 2016 | Gastroenterology Report2016，4，3： | 0 |
| 15 | Impact of geomorphometric parameters on the occurrence and distribution of landslides in Yamuna River Basin,North-Western Himalaya,India显示文摘The majority of landslides in the Indian Himalayas are triggered by rainfall and earthquake.The geology and geomorphology also play an important role and constitute the major predisposing factor controlling landslides.Additionally,active tectonics modify the landscape,impacting the occurrence and distribution of landslides.The objective of this study is to investigate the role of some of the major predisposing factors to assess landslide patterns in the Yamuna River Basin as it is prone to recurrent landslide hazards.The approach mainly deals with the application of geographical information system-based statistical analysis and quantifying frequency-area distribution of rainfalltriggered landslides for the years 2015 to 2017.The analysis shows that the frequency of landslides is highest in the slope range 40°-70°and the mean landslide size is higher in the slope range 0°-20°and 30°-40°,remaining constant on further increase in slope angle.The study shows that some critical slope range controls both the frequency and size of landslides.Landslides were mostly restricted to south facing slopes.About 91%of the landslide occur in the drainage density range of 1.2 to 2.1 km/km^(2) while landslides show very low occurrence in either lower(<1.2)or higher(>2.1)drainage density.Frequencysize distribution analysis of landslides depicts a distinct cutoff point but an indistinct rollover point.Under-sampling of small landslides can be a reasonable cause for this.Like other studies,the present data fits very well for medium and large landslides following an inverse power law with a scaling exponent of-2.16.Around 80% of landslides are smaller than the cutoff size and 20% larger than this value.The geology and tectonics of Lesser Himalayas and Sivaliks offer favorable conditions for frequent landslides.Areas such as Dehradun,Uttarkashi,Sirmaur,Shimla,and Solan are very prone to landslide activity owing to the presence of poorly consolidated sandstone,conglomerate,quartzites,phyllites,etc.Moreover,the majority of larger landslides are in the Dehradun district where precipitation,drainage density,and lithology are highly favorable to trigger large events.The present study has identified the critical range of predisposing factors responsible for landslides and presents the frequency-size distribution of landslides in the Yamuna River Basin.These are the key inputs in landslide susceptibility mapping and risk assessment.Therefore,the findings from the present analysis can be very helpful in landslide risk reduction and landslide hazard zonation and probably plan critical locations for installation of early warning signals. | Ravi SHANKAR Gyan Prakash SATYAM Prakash Kumar SINGH Nilesh Kumar RAI Ranjit Kumar PASWAN | 2022 | Journal of Mountain Science2022，19，8： | 0 |
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