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Endoscopic management of a new entity-plastobezoar:A case report and review of literature

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World Journal of Gastroenterology 2006年第41期12卷 6730-6733页

作者： SP misra Manisha Dwivedi Vatsala misra Department of Gastroenterology and Pathology Motilal Nehru Medical College Allahabad 211 001India

Foreign bodies and bezoars are commonly encountered in children. We describe a child aged 11 years who ingested large amounts of plastic material used for knitting chairs and charpoys. The conglomerate of plastic threads, entrapped food material and other debris, formed a huge mass occupying the whole stomach. Chronic irritation of the gastric antral mucosa led to ulceration and formation of hyperplastic polyps. We labeled this new entity as a “plastobezoar”. The entire bezoar could be removed endoscopically.

关键词： Bezoar Stomach Gastric Endoscopy Foreign body Gastric polyps Plastic

Ileocecal masses in patients with amebic liver abscess:Etiology and management

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World Journal of Gastroenterology 2006年第12期12卷 1933-1936页

作者： Sri Prakash misra Vatsala misra Marisha Dwivedi Department of Gastroenterology and Pathology Moti Lal Nehru Medical CollegeAllahabad 211001India

AIM. To assess the causes of ileocecal mass in patients with amebic liver abscess. METHODS： Patients with amebic liver abscess and ileocecal mass were carefully examined and investigated by contrast-enhanced CT scan followed by colonoscopy and histological examination of biopsy materials from lesions during colonoscopy. RESULTS： Ileocecal masses were found in seventeen patients with amebic liver abscess. The cause of the mass was ameboma in 14 patients, cecal tuberculosis in 2 patients and adenocarcinoma of the cecum in 1 patient. Colonic ulcers were noted in five of the six （83%） patients with active diarrhea at presentation. The ileocecal mass in all these patients was ameboma. Ulcers were seen in only one of the 11 （9%） patients without diarrhea. The difference was statistically significant from the group with diarrhea （P〈 0.005）. CONCLUSION： Ileocecal mass is not an uncommon finding in patients with amebic liver abscess. Although, the ileocecal mass is due to ameboma formation in most cases, it should not be assumed that this is the case in all patients. Colonoscopy and histological examination of the target biopsies are mandatory to avoid missing a more sinister lesion.

关键词： Amebiasis Ameboma Colon Colonoscopy Diagnosis

Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第11期7卷 1800-1809页

作者： KUMAR Rajeev misra Ashok Department of Mechanical Engineering Birla Institute of Technology Mesra 835215 Ranchi India

This paper presents some investigations on the effect of processing parameters on the emission of electromagnetic radiation （EMR） during plastic deformation and crack propagation in copper-zinc alloys. Timing of the EMR emissions, maximum stress during crack instability, stress-intensity factor, elastic strain energy release rate, maximum EMR amplitude, RMS value of EMR amplitude, EMR frequency and electromagnetic energy release rate were analysed for the effect of rolling directions at different percentage of zinc content in Cu-Zn alloy specimens. The same parameters were also analysed for 68-32 Cu-Zn alloy specimens at different annealing temperatures and at different angles 0, to the rolling direction. EMR emissions are observed to be highly anisotropic in nature. At θ=45° to 60°, marked changes in mechanical and electromagnetic parameters were observed. Specimens annealed at 500℃, just above the recrystallization temperature, and at 700℃, when grain-size growth is rapid, EMR responses have been found to have well-defined patterns.

关键词： Radiation Plastic deformation Rolling direction Annealing Fracture

Electro-osmotic flow and heat transfer of a non-Newtonian fluid in a hydrophobic microchannel with Navier slip

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Journal of Hydrodynamics 2015年第5期27卷 647-657页

作者： misra J.C. SINHA A. Adjunct Professor Centre for Healthcare Science and Technology Indian Institute of Engineering Science and Technology School of Medical Science and Technology Indian Institute of Technology

In this paper, we investigate the implications of electro-osmosis on electrohydrodynamic transport of a non-Newtonian fluid on a hydrophobic micro-channel by developing a suitable analytical method. Velocity-slip and temperature-jump conditions are paid due attention. An attempt has been made to examine the effects of rheological and electro-osmotic parameters on the kinematics of the fluid. The nonlinear Poisson-Boltzmann equation governing the formation of the electrical double layer and the body force that is generated by the applied potential are accounted for in the study. Perturbation solutions are presented. In order to exhibit the applicability of the analysis, the problem of electro-osmotic flow and heat transfer of blood in an arteriole has been taken up as an illustrative example of a real-life problem. An intensive quantitative study has been made through numerical computation of the physical variables involved in the analysis, which are of special interest in the study. The computational results are presented graphically. The study reveals that the temperature of blood can be controlled by increasing/decreasing the Joule heating parameter.

关键词： electro-osmotic flow hydrophobic microchannel electrical double layer viscoelastic fluid velocity-slip temperature-jump

Helicobacter pylori and gastric cancer: Indian enigma

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World Journal of Gastroenterology 2014年第6期20卷 1503-1509页

作者： Vatsala misra Renu Pandey Sri Prakash misra Manisha Dwivedi Department of Pathology Moti Lal Nehru Medical College Pandey Research 3312 Jackson Blvd Department of Gastroenterology and Hepatology MLN Medical College

Helicobacter pylori (H. pylori) is a gram negative microaerophilic bacterium which resides in the mucous linings of the stomach. It has been implicated in the causation of various gastric disorders including gastric cancer. The geographical distribution and etiology of gastric cancer differ widely in different geographical regions and H. pylori, despite being labeled as a grade I carcinogen, has not been found to be associated with gastric cancer in many areas. Studies in Asian countries such as Thailand, India, Bangladesh, Pakistan, Iran, Saudi Arabian countries, Israel and Malaysia, have reported a high frequency of H. pylori infection co-existing with a low incidence of gastric cancer. In India, a difference in the prevalence of H. pylori infection and gastric cancer has been noted even in different regions of the country leading to a puzzle when attempting to find the causes of these variations. This puzzle of H. pylori distribution and gastric cancer epidemiology is known as the Indian enigma. In this review we have attempted to explain the Indian enigma using evidence from various Indian studies and from around the globe. This review covers aspects of epidemiology, the various biological strains present in different parts of the country and within individuals, the status of different H. pylori-related diseases and the molecular pathogenesis of the bacterium.

关键词： Gastric cancer Gastric diseases Helicobacter pylori p53 mutation Carcinogen

Formation of E-cyanomethamine in a nitrile rich environment

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Research in Astronomy and Astrophysics 2017年第1期17卷 1-10页

作者： Shivani Alka misra Poonam Tandon Department of Mathematics & Astronomy University of Lucknow Lucknow India Department of Physics University of Lucknow Lucknow 226007 India

Recently a new molecule, cyanomethamine, has been detected towards Sagittarius B2（N）（Sgr B2（N））. Studying the formation mechanisms of complex interstellar molecules is difficult. Hence, a theoretical quantum chemical approach for analyzing the reaction mechanism describing the forma- tion of interstellar cyanomethamine through detected interstellar molecules and radicals （NCCN＋H） is discussed in the present work. Calculations are performed by using quantum chemical techniques, such as Density Functional Theory （DFT） and Mφ11er-Plesset perturbation （MP2） theory with a 6-311G（d,p） basis set, both in the gas phase and in icy grains. The proposed reaction path （NCCN＋H＋H） has exother- micity with no barrier which indicates the possibility of cyanomethamine formation in the interstellar medium.

关键词： interstellar medium: abundances general - general: extraterrestrial intelligence - mete-orites - individual: Sgr B2(N) region

Role of intravenously administered hyoscine butyl bromide in retrograde terminal ileoscopy: A randomized, double-blinded, placebo-controlled trial

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World Journal of Gastroenterology 2007年第12期13卷 1820-1823页

作者： SP misra M Dwivedi Department of Gastroenterology MotiLal Nehru Medical College University of Allahabad Allahabad211001 India

AIM： To evaluated the role of hyoscine butyl bromide in facilitating retrograde ileoscopy. METHODS： Retrograde terminal ileoscopy was attempted in 200 consecutive patients undergoing colonoscopy. After intubation of the cecum and visualization of the ileocecal valve, butyl bromide injection or normal saline was given intravenously to the patients in a double blind random fashion. The pulse rate and oxygen saturation were measured continuously. After completion of the procedure, endoscopists were then asked to score the ease of intubation and the ease of visualization of the terminal ileum on a visual scale of 1 to 10. The patients were also asked to score the pain after receiving hyoscine butyl bromide injection on a score of 1 to 10. RESULTS： Terminal ileoscopy could be performed in 188 patients. The mean （SD） visual analogue score for the ease of intubation of the cecum was 7.4 （0.65） in the injection group and 5.9 （0.8） in the placebo group （P 〈 0.001）. The mean （SD） length of ileum visualized in the injection group was 14.4 （3.3） cm and 10.4 （2.7） cm in the placebo group （P 〈 0.001）. The mean （SD） visual analogue score for ease of visualization of the terminal ileum was 7.5 （0.69） in the injection group and 5.9 （0.7） in the placebo group （P 〈 0.001）. The pain score experienced by the patients was 6.5 （0.7） in the injection group and 6.7 （0.69） in the placebo group （P 〈 0.008）. Although the pulse rate increased significantly in patients receiving the drug, no statistically significant difference was noted in the oxygen saturation between the two groups either before or after administration of the drug. No complications were observed in either of the groups. CONCLUSION： Hyoscine butyl bromide injection is a useful adjunct in helping the intubation and visualization of terminal ileum during colonoscopy.

关键词： Ileoscopy Colonoscopy Colon Ileum Hyoscine Tuberculosis Inflammatory bowel disease Cancer

Electron Paramagnetic Resonance of Mn^(2+)-Doped Cadmium Formate Dihydrate Single Crystals

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Chinese Physics Letters 2012年第3期29卷 208-211页

作者： Indrajeet Mishra Ram Kripal Sanjay misra EPR Laboratory Department of PhysicsUniversity of AllahabadAllahabad21100 India 2Department of Physics Buddha P.G.CollegeKushinagar(U.P.)India

An electron paramagnetic resonance(EPR)study on Mn^(2+)doped Cadmium formate dihydrate single crystals is carried *** EPR spectrum at room temperature exhibits only one out of five fine structural transitions which split into six hyperfine lines in all *** spectrum is simulated using the EasySpin program and evaluated spin Hamiltonian *** simulated EPR spectrum is in good agreement with the *** comparing direction cosines of spectroscopic splitting factor g and the direction cosines of different bonds determined by the crystal structure data it is found that Mn^(2+)enters the lattice substitutionally and only one Mn^(2+)site is *** obtained g and the hyperfine interaction constant A achieved are g=2.006±0.002,A=(98±2)×10^(-4)cm^(-1)and the second-order axial zero-field splitting parameter D=(60±2)×10^(-4)cm^(-1).

关键词： hydrate splitting spectrum

A remote sensing based analysis of climate change in Sikkim supported by evidence from the field

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Journal of Mountain Science 2021年第5期18卷 1256-1267页

作者： Rumia BASU Gourav misra Dipto SARKAR Department of Earth and Ocean Sciences National University of IrelandH91TK33 GalwayIreland Department of Geography University College CorkT12K8AF CorkIreland Department of Geography and Environmental Studies Carleton UniversityK1S5B6 OttawaCanada

The Himalayas hailed as the‘water towers of the world’feed many perennial rivers which form the lifeline of the Indian *** change induced rising global temperatures and changing rainfall patterns are currently threatening the glaciers that feed the *** combination of these factors is causing water stresses to a part of the world which is usually considered water *** there are some large-scale studies done in the Himalayas,regional analysis of changing rainfall patterns and their impacts on vegetation and agriculture is *** we focus on the Indian state of Sikkim located in the Eastern Himalayas to evaluate these issues using mixed *** use satellite data from PERSIANN and MODIS to characterise the regional rainfall,vegetation,and surface temperature trends between 2001 and *** the analysis shows overall declining rainfall trends across most land cover classes,the trends in temperature are mostly positive for the period of study,with winter Land Surface Temperature(LST)values showing the largest area with marginally significant(p<0.1)positive *** contrast,such patterns are not observed for ***,the interviews corroborate that even agriculture is impacted,implying that the trends continue at finer spatial scales *** lack of government support for adaptation and mitigation is also lamented placing the communities at a precarious position to continuing climate change.

关键词： Climate change Rainfall Temperature Vegetation Mixed methods Sikkim