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    题名 作者 年代 出处 被引量
1Increasing Incidence and Prevalence of the Inflammatory Bowel Diseases With Time, Based on Systematic Review显示文摘Natalie A. Molodecky Ing Shian Soon Doreen M. Rabi William A. Ghali Mollie Ferris Greg Chernoff Eric I. Benchimol Remo Panaccione Subrata Ghosh Herman W. Barkema Gilaad G. Kaplan 2012Gastroenterology2012,,1:33
2Upper-gastrointestinal bleeding secondary to peptic ulcer disease:Incidence and outcomes显示文摘AIM:To evaluate the incidence,surgery,mortality,and readmission of upper gastrointestinal bleeding(UGIB)secondary to peptic ulcer disease(PUD).METHODS:Administrative databases identified all hospitalizations for UGIB secondary to PUD in Alberta,Canada from 2004 to 2010(n=7079)using the International Classification of Diseases Codes(ICD-10).A subset of the data was validated using endoscopy reports.Positive predictive value and sensitivity with 95%confidence intervals(CI)were calculated.Incidence of UGIB secondary to PUD was calculated.Logistic regression was used to evaluate surgery,in-hospital mortality,and 30-d readmission to hospital with recurrent UGIB secondary to PUD.Co-variants accounted for in our logistic regression model included:age,sex,area of residence(i.e.,urban vs rural),number of Charlson comorbidities,presence of perforated PUD,undergoing upper endoscopy,year of admission,and interventional radiological attempt at controlling bleeding.A subgroup analysis(n=6356)compared outcomes of patients with gastric ulcers to those with duodenal ulcers.Adjusted estimates are presented as odds ratios(OR)with95%CI.RESULTS:The positive predictive value and sensitivity of ICD-10 coding for UGIB secondary to PUD were85.2%(95%CI:80.2%-90.2%)and 77.1%(95%CI:69.1%-85.2%),respectively.The annual incidence between 2004 and 2010 ranged from 35.4 to 41.2 per100000.Overall risk of surgery,in-hospital mortality,and 30-d readmission to hospital for UGIB secondary to PUD were 4.3%,8.5%,and 4.7%,respectively.Interventional radiology to control bleeding was performed in 0.6%of patients and 76%of these patients avoided surgical intervention.Thirty-day readmission significantly increased from 3.1%in 2004 to 5.2%in 2010(OR=1.07;95%CI:1.01-1.14).Rural residents(OR rural vs urban:2.35;95%CI:1.83-3.01)and older individuals(OR≥65 vs<65:1.57;95%CI:1.21-2.04)were at higher odds of being readmitted to hospital.Patients with duodenal ulcers had higher odds of dying(OR=1.27;95%CI:1.05-1.53),requiring surgery(OR=1.73;95%CI:1.34-2.23),and being readmitted to hospital(OR=1.54;95%CI:1.19-1.99)when compared to gastric ulcers.CONCLUSION:UGIB secondary to PUD,particularly duodenal ulcers,was associated with significant morbidity and mortality.Early readmissions increased over time and occurred more commonly in rural areas.Samuel Quan Alexandra Frolkis Kaylee Milne Natalie Molodecky Hong Yang Elijah Dixon Chad G Ball Robert P Myers Subrata Ghosh Robert Hilsden Sander Veldhuyzen van Zanten Gilaad G Kaplan 2014World Journal of Gastroenterology2014,20,46:21
3Sitagliptin in patients with non-alcoholic steatohepatitis: A randomized, placebo-controlled trial显示文摘AIM To evaluate the effect of sitagliptin vs placebo on histologic and non-histologic parameters of nonalcoholic steatohepatitis(NASH).METHODS Twelve patients with biopsy-proven NASH were randomized to sitagliptin(100 mg daily)(n=6)or placebo(n=6)for 24 wk.The primary outcome was improvement in liver fibrosis after 24 wk.Secondary outcomes included evaluation of changes in NAFLD activity score(NAS),individual components of NAS(hepatocyte ballooning,lobular inflammation,and steatosis),glycemic control and insulin resistance[including measurements of glycated hemoglobin(Hb A1C)and adipocytokines],lipid profile including free fatty acids,adipose distribution measured using magnetic resonance imaging(MRI),and thrombosis markers(platelet aggregation and plasminogen activator inhibitor 1 levels).We also sought to determine the correlation between changes in hepatic fat fraction(%)[as measured using the Iterative Decomposition of water and fat with Echo Asymmetry and Least-squares estimation(IDEAL)MRI technique]and changes in hepatic steatosis on liver biopsy.RESULTS Sitagliptin was not significantly better than placebo at reducing liver fibrosis score as measured on liver biopsy(mean difference between sitagliptin and placebo arms,0.40,P=0.82).There were no significant improvements evident with the use of sitagliptin vs placebo for the secondary histologic outcomes of NAS total score as well as for the individual components of NAS.Compared to baseline,those patients who received sitagliptin demonstrated improved Hb A1C(6.7%±0.4%vs 7.9%±1.0%,P=0.02),and trended towards improved adiponectin levels(4.7±3.5μg/m L vs 3.9±2.7μg/m L,P=0.06)and triglyceride levels(1.26±0.43 mmol/L vs 2.80±1.64 mmol/L,P=0.08).However,when compared with placebo,sitagliptin did not cause a statistically significant improvement in Hb A1C(mean difference,-0.7%,P=0.19)nor triglyceride levels(mean difference-1.10mmol/L,P=0.19)but did trend towards improved adiponectin levels only(mean difference,0.60μg/m L,P=0.095).No significant changes in anthropometrics,liver enzymes,other adipocytokines,lipid profile,thrombosis parameters,or adipose distribution were demonstrated.The MRI IDEAL procedure correlated well with steatosis scores obtained on liver biopsy in both groups at baseline and post-treatment,and the Spearman correlation coefficients ranged from r=0.819(baseline)to r=0.878(post-treatment),P=0.002.CONCLUSION Sitagliptin does not improve fibrosis score or NAS after 24 wk of therapy.The MRI IDEAL technique may be useful for non-invasive measurement of hepatic steatosis.Tisha R Joy Charles A McKenzie Rommel G Tirona Kelly Summers Shannon Seney Subrata Chakrabarti Neel Malhotra Melanie D Beaton 2017World Journal of Gastroenterology2017,23,1:18
4周期素A过表达诱导S期细胞凋亡的研究显示文摘目的 探讨细胞周期 S期滞留细胞凋亡的分子基础。方法 用 Westernblot法测定 L- 2和 Br1-3pr- 1两细胞株细胞周期 S期进程相关分子 Rb、周期素 A、E、CDK2、CDC2及与细胞凋亡直接相关分子 Bcl- 2和Bax的表达 ,并用组蛋白磷酸化法测定周期素 A、E、CDK2和 CDC2相关激酶的活性。结果 经 PAL A处理后 ,发生 S期细胞凋亡的 L- 2细胞与不发生 S期细胞凋亡的 Br1- 3pr- 1细胞比较 ,其周期素 A的表达明显增加 ,Bcl- 2的表达下降。但经 PAL A处理后 ,其他分子的表达和激酶活性在上述两种细胞之间无明显差异。结论 周期素 A可能是 S期检查点基因的重要候选者 ,并可能通过调节 Bcl- 2的表达来控制 S期滞留细胞凋亡的发生。尹海林 Subrata Sen 杨文 杨光武 刘学旭 2001华西医科大学学报2001,32,2:7
5Combination Therapy With Infliximab and Azathioprine Is Superior to Monotherapy With Either Agent in Ulcerative Colitis显示文摘Remo Panaccione Subrata Ghosh Stephen Middleton Juan R. Márquez Boyd B. Scott Laurence Flint Hubert JF. van Hoogstraten Annie C. Chen Hanzhe Zheng Silvio Danese Paul Rutgeerts 2013Gastroenterology2013,,:5
6Effect of fish oil enriched enteral diet on inflammatory bowel disease tissues in organ culture: Differential effects on ulcerative colitis and Crohn's disease显示文摘AIM: To investigate the influence of fish oil enriched enteral diet on intestinal tissues taken from Crohn's disease (CD), ulcerative colitis (UC) and non-inflamed non-IBD control patients in vitro.METHODS: Colonoscopic biopsies from patients with active CD (n = 4), active UC (n = 7), and non-inflamed non-IBD control patients (n = 4) were incubated (three dilutions of 1:20, 1:10, and 1:5) with Waymouth's culture medium and enteral elemental diet (EO28, SHS, Liverpool, UK) modified in the fatty acid composition with fish oil (EF) in an organ culture system for 24 h. In each experimental set-up, incubation with Waymouth's medium alone as control was included. Tissue viability was assessed by adding bromodeoxyuridine (BrdU) to the culture fluid and immunohistochemically staining for BrdU uptake. Cytokine ratio of IL-1ra/IL-1β (low ratio indicative of inflammation) and production of those cytokines as a percentage of medium control were assayed in the culture supernatant. RESULTS: Incubation of CD-affected tissue with EF (1:20, 1:10, and 1:5) modestly and non-significantly increased IL-1ra/IL-1β ratio as compared with medium control (CD 39.1±16.1; 26.5±7.8, 47.1±16.8 vs control 13.0±2.2), but incubation of UC-affected tissues increased IL-1ra/IL-1β ratio significantly in all three dilutions (UC 69.1±32.2, P<0.05; 76.1±36.4, P = 0.05;84.5±37.3, P<0.02; vs control 10.2±3.7). Incubation of non-inflamed non-IBD control tissue did not increase the IL-1ra/IL-1β ratio in any dilution compared to medium control (69.3±47.0, 54.1±30.6, 79.4±34.0 vs control 76.1±37.3). Average percentage production of IL-1β indexed against medium control was significantly less in UC after EF incubation as compared with CD (UC 24.0±4.8 vs CD 51.8±8.1; P<0.05). Average percentage production of IL-1ra was markedly higher in UC (135.9±3.4) than that in control patients (36.5±4.3) (P<0.0001).CONCLUSION: IBD tissues, after incubation with elemental diet modified in its fatty acid composition with fish oil, show an increase in IL-1ra/IL-1β cytokine ratio. This effect of ω-3 fatty acid modulation is significantly more marked in UC compared with CD and is accompanied by both a reduction of IL-1β and increase of IL-1ra. The positive direct anti-inflammatory effect of elemental diet with fish oil in tissue affected with UC suggests dietary treatment of UC may be possible.Doris Meister Subrata Ghosh 2005World Journal of Gastroenterology2005,11,47:5
7Inflammatory bowel disease-related colorectal cancer:Past,present and future perspectives显示文摘Inflammatory bowel disease-related colorectal cancer(IBD-CRC)is one of the most serious complications of IBD contributing to significant mortality in this cohort of patients.IBD is often associated with diet and lifestyle-related gut microbial dysbiosis,the interaction of genetic and environmental factors,leading to chronic gut inflammation.According to the“common ground hypothesis”,microbial dysbiosis and intestinal barrier impairment are at the core of the chronic inflammatory process associated with IBD-CRC.Among the many underlying factors known to increase the risk of IBD-CRC,perhaps the most important factor is chronic persistent inflammation.The persistent inflammation in the colon results in increased proliferation of cells necessary for repair but this also increases the risk of dysplastic changes due to chromosomal and microsatellite instability.Multiple pathways have been identified,regulated by many positive and negative factors involved in the development of cancer,which in this case follows the‘inflammation-dysplasia-carcinoma’sequence.Strategies to lower this risk are extremely important to reduce morbidity and mortality due to IBD-CRC,among which colonoscopic surveillance is the most widely accepted and implemented modality,forming part of many national and international guidelines.However,the effectiveness of surveillance in IBD has been a topic of much debate in recent years for multiple reasons—cost-benefit to health systems,resource requirements,and also because of studies showing conflicting long-term data.Our review provides a comprehensive overview of past,present,and future perspectives of IBD-CRC.We explore and analyse evidence from studies over decades and current best practices followed globally.In the future directions section,we cover emerging novel endoscopic techniques and artificial intelligence that could play an important role in managing the risk of IBD-CRC.Snehali Majumder Uday Nagesh Shivaji Rangarajan Kasturi Alben Sigamani Subrata Ghosh Marietta Iacucci 2022World Journal of Gastrointestinal Oncology2022,14,3:5
81α,25-dihydroxyvitamin D_(3) prevents DNA damage and restores antioxidant enzymes in rat hepatocarcinogenesis induced by diethylnitrosamine and promoted by phenobarbital显示文摘AIM:To investigate the chemopreventive iffects of 1α,25-dihydroxyvitamin D3 in diethylnitrosamine induced,phenobarbital promoted rat hepatocarcinogenesis.METHODS:The rats were randomly divided into 6 different groups(A-F).Group A,C and E rats received a single intraperitoneal (i.p) injection of diethylnitrosamine (DEN) at a dose of 200 mg/kg body mass in 9 g/L NaCl solution at 4 wk of age ,while group B served as normal vehicle control received normal saline once.After a brief recovery of 2 WK, all the DEN treated rats were given phenobarbital (PB) at 0.5g/L daily in the basal diet till WK 20.Group C was started 4 wk prior to DEN injection and continued thereafter till wk 20 at a dose (os) twice a week.Group E received the treatment of 1α,25-(OH)2D3 at the same dose mentioned as above for 15 wk.The rats in group D and F received 1α,25-(OH)2D3 alone as in group C without DEN injection.RESULTS:The comet assay showed statistically higher mean values for length to width ratios (L:W) of DNA mass and tailed cells (p<0.01;p<0.01 respectively) in DEN treated rats as compared to their normal controls.Continuous supplementation of 1α,25-dihydroxyvitaminD3 showed a significant (p<0.01) decrease in L:W ratio of DNA mass tailed cells.Furthermore,1α,25-(OH)2D3 supplementations elevated the super oxide dismutase (SOD) activety,hepatic malondialdehyde(MDA) levle,reduced glutathione (GSH) and glutathione S-transferase (GST) activety (p<0.01,p<0.01,p<0.05 and p<0.05 respectively).As an endpoint marker histological changes were observed to establish the chemopreventive effects of 1α,25-dihydroxyvitaminD3.CONCLUSION:Supplementations of 1α,25-(OH)2D3 has a marked protection against hepatic nodelogenesis,antioxidant enzymes and DNA damages in DEN induced rat hepatocarcinogenesis promoted by phenobarbital.Mahendrakumar Chandrasekharappa Banakar Suresh Kanna Paramasivan Mitali Basu Chattopadhyay Subrata Datta Prabir Chakraborty Malay Chatterjee Kalaiselvi Kannan Elayaraja Thygarajan 2004World Journal of Gastroenterology2004,10,9:5
9Increasing Incidence and Prevalence of the Inflammatory Bowel Diseases With Time, Based on Systematic Review显示文摘Natalie A. Molodecky Ing Shian Soon Doreen M. Rabi William A. Ghali Mollie Ferris Greg Chernoff Eric I. Benchimol Remo Panaccione Subrata Ghosh Herman W. Barkema Gilaad G. Kaplan 2012Gastroenterology2012,,1:3
10In Vitro Nicotine-Induced Oxidative Stress in Mice Peritoneal Macrophages: A Dose-Dependent Approach显示文摘Santanu Kar Mahapatra Subhasis Das Surajit Bhattacharjee N. Gautam Subrata Majumdar Somenath Roy 2009Toxicology Mechanisms and Methods2009,,2:3
11Wear and performance analysis of a 4-stroke diesel engine employing nanolubricants显示文摘Ankit Kotia Sheeba Borkakoti Subrata Kumar Ghosh 2018Particuology2018,16,2:3
12Ellagic acid facilitates indomethacin-induced gastric ulcer healing via COX-2 up-regulation显示文摘导致消炎痛的胃的溃疡在试验性的老鼠模型由 ellagic 酸(EA ) 愈合的机制在我们的学习被描述。溃疡索引(UI ) 和 myeloperoxidase (军邮局) 胃纸巾的活动在消炎痛以后在第三天显示出最大的溃疡(18 mg/kg,单个剂量) 管理。UI 和军邮局活动的初步的观察建议 EA 拥有愈合溃疡的活动。另外的反溃疡参数象前列腺素 E2 的层次那样, cyclooxygenase (艇长) 1 和 2 酶,反煽动性的 cytokines [ interleukin ( IL ) -4 和-5], pro-angiogenic 因素例如脉管的 endothelial 生长因素, hepatocyte 生长因素( HGF ),并且 endothelial 生长因素( EGF )由消炎痛是下面调整的。为 3 天的处理转移了的 EA (7 mg/kg/day ) 导致消炎痛的支持 inflammatory 愈合的生物化学的参数站在一起。这些活动与 EA 的能力被相关改变愈合的 COX-2-dependent 小径。然而, EA 的愈合溃疡的活动被特定的 COX-2 禁止者, celecoxib,和 NS-398 的管理前损害。一起拿,这些结果建议 EA 处理加速溃疡由导致 IL-4 愈合, EGF/HGF 铺平并且提高 COX-2 表示。Ananya Chatterjee Sirshendu Chatterjee Smita Das Arpita Saha Subrata Chattopadhyay Sandip K.Bandyopadhyay 2012Acta Biochimica et Biophysica Sinica2012,44,7:3
13Hemodynamic effects of propranolol with spironolactone in patients with variceal bleeds: A randomized controlled trial显示文摘AIM: To study the hemodynamic effects of spironolactone with propranolol vs propranolol alone in the secondary prophylaxis of variceal bleeding. METHODS: Thirty-five cirrhotics with variceal bleeding randomly received propranolol (n = 17: Group A) or spironolactone plus propranolol (n = 18: Group B). Hemodynamic assessment was performed at baseline and on the eighth day. RESULTS: Spironolactone with propranolol caused a greater reduction in the hepatic venous pressure gradient than propranolol alone (26.94% vs 10.2%; P < 0.01). Fourteen out of eighteen patients on the combination treatment had a reduction in hepatic venous pressure gradient to ≤ 12 mmHg or a 20% reduction from baseline in contrast to only six out of seventeen (6/17) on propranolol alone (P < 0.05). CONCLUSION: Spironolactone with propranolol results in a better response with a greater reduction in hepatic venous pressure gradient in the secondary prophylaxis of variceal bleeding. A greater number of patients may be protected by this combination therapy than by propranolol alone. Hence, this combination may be recommended for secondary prophylaxis in patients with variceal bleeding.Binay K De Deep Dutta Rimi Som Pranab K Biswas Subrata K Pal Anirban Biswas 2008World Journal of Gastroenterology2008,14,12:3
14耐火材料技术的近期发展显示文摘近十年来耐火材料技术取得了很大发展。在各种结合剂和原料方面开发了新型系列产品。特别在不定形耐火材料方面取得了一些重要进展,这些进展不仅表现在原材料方面,而且也表现在施工工艺方面:炼钢使用碱性耐火砖的主要技术进步是采用了溅渣护炉工艺。通过溅渣护炉,将新形成的渣覆盖在炉墙表面,使得碱性氧气转炉的炉龄大为提高,一般在冶炼几千炉后才需重新筑衬.在不定形耐火材料技术方面,开发了几种新型的结合剂和依靠泵送这样的机械手段进行快速施工的工艺。新的结合剂也有助于简化养生、干燥和烘烤工艺,缩短了小修时间。这些耐火材料及其快速的施工工艺(包括初始施工和修补),有助于炼钢生产者缩短小修时间:文章着重介绍无水泥结合剂和特殊配方的低水泥产品。Subrata Banerjee 姚金甫(译) 杜锋(校) 2005世界钢铁2005,5,5:3
15Coral-Like Yolk–Shell-Structured Nickel Oxide/Carbon Composite Microspheres for High-Performance Li-Ion Storage Anodes显示文摘In this study, coral?like yolk–shell?structured NiO/C composite microspheres(denoted as CYS?NiO/C) were prepared using spray pyrolysis. The unique yolk–shell structure was characterized, and the formation mechanism of the structure was proposed. Both the phase separation of the polyvinylpyrrolidone and polystyrene(PS) colloidal solution and the decompo?sition of the size?controlled PS nanobeads in the droplet played crucial roles in the formation of the unique coral?like yolk–shell structure. The CYS?NiO/C microspheres delivered a reversible discharge capacity of 991 mAh g^(-1) after 500 cycles at the current density of 1.0 A g^(-1). The dis?charge capacity of the CYS?NiO/C microspheres after the 1000 th cycle at the current density of 2.0 A g^(-1) was 635 mAh g^(-1), and the capacity retention measured from the second cycle was 91%. The final discharge capacities of the CYS?NiO/C microspheres at the current densities of 0.5, 1.5, 3.0, 5.0, 7.0, and 10.0 A g^(-1) were 753, 648, 560, 490, 440, and 389 mAh g^(-1), respectively. The synergetic e ect of the coral?like yolk–shell structure with well?defined interconnected mesopores and highly conductive carbon resulted in the excellent Li+?ion storage properties of the CYS?NiO/C microspheres.Min Su Jo Subrata Ghosh Sang Mun Jeong Yun Chan Kang Jung Sang Cho 2019Nano-Micro Letters2019,11,1:2
16Acanthus ilicifolius plant extract prevents DNA alterations in a transplantable Ehrlich ascites carcinoma-bearing murine model显示文摘AIM: To investigate the chemopreventive efficacy of the Indian medicinal plant Acanthus ilicifolius L Acanthaceae in a transplantable Ehrlich ascites carcinoma (EAC)- bearing murine model. METHODS: Male Swiss albino mice were divided into four groups: Group A was the untreated normal control; Group B was the EAC control mice group that received serial, intraperitoneal (ip) inoculations of rapidly proliferating 2 x 105 viable EAC cells in 0.2 mL of sterile phosphate buffered saline; Group C was the plant extract-treated group that received the aqueous leaf extract (ALE) of the plant at a dose of 2.5 mg/kg body weight by single ip injections, once daily for 10, 20 and 30 consecutive days following tumour inoculation (ALE control); and Group D was the EAC + ALE- treatment group. The chemopreventive potential of the ALE was evaluated in a murine model by studying various biological parameters and genotoxic markers, such as tumour cell count, mean survival of the animals, haematological indices, hepatocellular histology, immunohistochemical expression of liver metallothionein (MT) protein, sister-chromatid exchanges (SCEs), and DNA alterations.RESULTS: Treatment of the EAC-bearing mice with the ALE significantly (P < 0.001) reduced viable tumour cell count by 68.34% (228.7 x 106 ± 0.53) when compared to EAC control mice (72.4 x 106 ± 0.49), and restored body and organ weights almost to the normal values. ALE administration also increased (P < 0.001) mean survival of the hosts from 35 ± 3.46 d in EAC control mice to 83 ± 2.69 d in EAC + ALE-treated mice. Haematological indices also showed marked improvement with administration of ALE in EAC-bearing animals. There was a significant increase in RBC count (P < 0.001), hemoglobin percent (P < 0.001), and haematocrit value (P < 0.001) from 4.3 ± 0.12, 6.4 ± 0.93, and 17.63 ± 0.72 respectively in EAC control mice to 7.1 ± 0.13, 12.1 ± 0.77, and 30.23 ± 0.57 respectively in EAC + ALE-treated group, along with concurrent decrement (P < 0.001) in WBC count from 18.8 ± 0.54 in EAC control to 8.4 ± 0.71 in EAC + ALE. Furthermore, treatment with ALE substantially improved hepatocellular architecture and no noticeable neoplastic lesions or foci of cellular alteration were observed. Daily administration of the ALE was found to limit liver MT expression, an important marker of cell proliferation with concomitant reduction in MT immunoreactivity (62.25 ± 2.58 vs 86.24 ± 5.69, P < 0.01). ALE was also potentially effective in reducing (P < 0.001) the frequency of SCEs from 14.94 ± 2.14 in EAC control to 5.12 ± 1.16 in EAC + ALE-treated group. Finally, in comparison to the EAC control, ALE was able to suppress in vivo DNA damage by abating the generations of ‘tailed’ DNA by 53.59% (98.65 ± 2.31 vs 45.06 ± 1.14, P < 0.001), and DNA single-strand breaks (SSBs) by 38.53% (3.14 ± 0.31 vs 1.93 ± 0.23, P < 0.01) in EAC-bearing murine liver. CONCLUSION: Our data indicate that, ALE is beneficial in restoring haematological and hepatic histological profiles and in lengthening the survival of the animals against the proliferation of ascites tumour in vivo. Finally, the chemopreventive efficacy of the ALE is manifested in limiting MT expression and in preventing DNA alterations in murine liver. The promising results of this study suggest further investigation into the chemopreventive mechanisms of the medicinal plant A. ilicifolius in vivo and in vitro.Tridib Chakraborty Dipak Bhuniya Mary Chatterjee Mosiur Rahaman Dipak Singha Baidya Nath Chatterjee Subrata Datta Ajay Rana Kartick Samanta Sunil Srivastawa Sankar K Maitra Malay Chatterjee 2007World Journal of Gastroenterology2007,13,48:2
17A survey on control issues in renewable energy integration and microgrid显示文摘This paper describes the usefulness of renewable energy throughout the world to generate power. Renewable energy adds a remarkable scope in power system. Renewable energy sources act as the prime mover of a microgrid. The Microgrid is a small network of power system with distributed generation (DG) units connected in parallel. The integration challenges of renewable energy sources and the control of microgrid are described in this paper. The varied nature of DG system produces voltage and frequency deviation. The unknown nature of the load produces un-modeled dynamics. This un-modeled dynamic introduces measurable effects on the performance of the microgrid. This paper investigates the performance of the microgrid against different scenarios. The voltage of the microgrid is controlled by using different controllers and their results are also investigated. The performance of controllers is investigated using MATLAB/Simulink SimPowerSystems.Faisal R.Badal Purnima Das Subrata K.Sarker Sajal K.Das 2019Protection and Control of Modern Power Systems2019,4,1:2
18Postoperative Complications and Mortality Following Colectomy for Ulcerative Colitis显示文摘Shanika de Silva Christopher Ma Marie–Claude Proulx Marcelo Crespin Belle S. Kaplan James Hubbard Martin Prusinkiewicz Andrew Fong Remo Panaccione Subrata Ghosh Paul L. Beck Anthony MacLean Donald Buie Gilaad G. Kaplan 2011Clinical Gastroenterology and Hepatology2011,,11:2
19Contributions of Inflammatory Processes to the Development of the Early Stages of Diabetic Retinopathy显示文摘Timothy S. Kern Subrata Chakrabarti 2007Experimental Diabetes Research2007,,:2
20溃疡性结肠炎显示文摘Subrata Ghosh Alan Shand Anne Ferguson 王纯巍 2002英国医学杂志中文版2002,5,3:2
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