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Management of hypersplenism in non-cirrhotic portal hypertension:a surgical series

Hepatobiliary & Pancreatic Diseases International 2012年第2期11卷 165-171页

作者： Rajesh Rajalingam amit javed Dharmanjay Sharma Puja Sakhuja Shivendra Singh Hirdaya H Nag Anil K Agarwal Department of Gastrointestinal Surgery G. B. Pant Hospital and Maulana Azad Medical College Delhi University New Delhi India Department of Pathology G. B. Pant Hospital and Maulana Azad Medical College Delhi University New Delhi India

BACKGROUND:Hypersplenism is commonly seen in patients with non-cirrhotic portal hypertension(NCPH).While a splenectomy alone can effectively relieve the hypersplenism,it does not address the underlying portal *** present study was undertaken to analyze the impact of shunt and non-shunt operations on the resolution of hypersplenism in patients with *** relationship of symptomatic hypersplenism,severe hypersplenism and number of peripheral cell line defects to the severity of portal hypertension and outcome was also ***:A retrospective analysis of NCPH patients with hypersplenism managed surgically between 1999 and 2009 at our center was *** 252 patients with NCPH,64(45 with extrahepatic portal vein obstruction and 19 with non-cirrhotic portal fibrosis) had hypersplenism and constituted the study *** analysis was done using GraphPad *** and continuous variables were compared using the chi-square test,ANOVA,and Student’s t *** MannWhitney U test and Kruskal-Wallis test were used to compare non-parametric ***:The mean age of patients in the study group was 21.81±6.1 *** was symptomatic in 70.3% with an incidence of spontaneous bleeding at 26.5%,recurrent anemia at 34.4%,and recurrent infection at 29.7%.The mean duration of surgery was 4.16±1.9 hours,intraoperative blood loss was 457±126(50-2000) mL,and postoperative hospital stay 5.5±1.9 *** surgery,normalization of hypersplenism occurred in all *** long-term followup,none of the patients developed hepatic encephalopathy and 4 had a variceal re-bleeding(2 after a splenectomy alone,1 each after an esophago-gastric devascularization and proximal splenorenal shunt).Patients with severe hypersplenism and those with defects in all three peripheral blood cell lineages were older,had a longer duration of symptoms,and a higher incidence of variceal bleeding and postoperative *** addition,patients with t

关键词： portal hypertension hypersplenism splenorenal shunt lienorenal shunt

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Surgical management and outcomes of severe gastrointestinal injuries due to corrosive ingestion

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World Journal of Gastrointestinal Surgery 2012年第5期4卷 121-125页

作者： amit javed Sujoy Pal Elan Kumaran Krishnan Peush Sahni Tushar Kanti Chattopadhyay Department of Gastrointestinal Surgery and Liver Transplantation All India Institute of Medical Sciences

AIM:To report our experience in the surgical management of severe injuries of the gastrointestinal tract due to corrosive ***:A retrospective review of patients who underwent emergency surgery for severe gastrointestinal injuries following corrosive ingestion between 1983 and 2010 was carried *** was extracted from a prospectively maintained esophageal disease *** corrosive injuries were defined as full thickness necrosis with perforation of the esophagus or the stomach(with or without involvement of the adjacent viscera) with resultant mediastinitis or ***:Between 1983 and 2010,209 patients with corrosive injury of the esophagus were *** these,13(6.2%) patients underwent emergency surgery for severe corrosive *** median age of the patients was 22 years and the median interval between ingestion of the corrosive substance and surgery was 24 *** surgical procedures done included esophagogastrectomy alone(n = 6),esophagogastrectomy withduodenectomy(n = 4),esophagogastrectomy with pancreaticoduodenectomy(n = 1),esophagogastrectomy with splenectomy(n = 1) and distal gastrectomy with duodenectomy(n = 1).Two patients died in the postoperative period and one after discharge awaiting the second *** factors significantly predictive of mortality following such an injury included renal failure at the time of initial presentation,presence of metabolic acidosis,delay of more than 24 h between corrosive ingestion and surgery,and corrosive induced adjacent organ injury(pancreatic)(P < 0.001,0.02,0.005 and 0.015 respectively).Ten patients underwent subsequent surgery for restoration of the alimentary tract continuity with a colonic pull-up(n = 8) and gastrojejunostomy(n = 1).In one patient,the attempted colon pull-up failed due to extensive scarring of the *** median follow up(following restoration of continuity of the gastrointestinal tract) was 36.5 *** patient developed dysphagia due to a strictur

关键词： Caustics Esophagus Esophageal stenosis Dysphagia

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PP-Rings of Generalized Power Series

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Acta Mathematica Sinica,English Series 2000年第4期16卷 573-578页

作者： javed Ahsan Department of Mathematical Sciences. King Fahd University of Petroleum and Minerals. Dhahran 31261. Saudi Arabia

As a generalization of power series rings, Ribenboim introduced the notion of the rings of generalized power series. Let R be a commutative ring, and （S.≤） a strictly totally ordered monoid. We prove that （1） the ring [[R(S.≤]] of generalized power series is a PP-ring if and only if R is a PP-ring and every S-indexed subset C of B（R）（the set of all idempotents of R） has a least upper bound in B（R）. and （2） if （S. ≤） also satisfies the condition that 0≤s for any s∈S, then the ring [[R(S.≤]] is weakly PP if and only if R is weakly PP.

关键词： Ring of generalized power series PP-ring Weakly PP-ring

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Role of lithology, weathering and precipitation on water chemistry of lakes from Larsemann Hills and Schirmacher Oasis of East Antarctica

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Advances in Polar Science 2019年第1期30卷 35-51页

作者： Rajesh ASTHANA Prakash K SHRIVASTAVA Hari B SRIVASTAVA Ashit K SWAIN Mirza javed BEG amit DHARWADKAR Central Head Quarter M-IV Geological Survey of India Central Head Quarters State Unit Sikkim Geological Survey of India Department of Geology Banaras Hindu University National Centre for Polar and Ocean Research Ministry of Earth Sciences Government of India Headland Sada Polar Studies Division Geological Survey of India

Schirmacher Oasis and Larsemann Hills areas represent two different periglacial environments of East Antarctica. Schirmacher Oasis is characterized by a vast stretch of ice-shelf in the north and East Antarctic Ice Sheet(EAIS) to its south. Whereas, in Larsemann Hills area the northern and north-western boundary is coastal area and EAIS in the southern part,exhibiting polar lowland between the marine and continental glacial ecosystems. Physico-chemical parameters of water samples from different lakes of both of these two distinct locations are quite contrasting and have indicated influence of lithology, weathering, evaporation and precipitation. The lake water chemistry in Larsemann Hills area is mainly governed by the lithology of the area while Schirmacher lakes exhibit influence of precipitation and rock composition. All major ions of lake waters indicate balanced ionic concentrations. The atmospheric precipitation has significantly modified the ionic distributions in the lakes and channels. Carbonation is the main proton supplying geochemical reactions involved in the rock weathering and this is an important mechanism which controls the hydrochemistry. The lake water hydrochemistry differs widely not only between two distant periglacial zones but also within a short distance of a single periglacial entity, indicating influence of territorial climate over hydrochemistry.

关键词： lake water ionic concentration Schirmacher Oasis Larsemann Hills East Antarctica

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Soliton formation in electron-temperature-gradient-driven magnetoplasma

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Plasma Science and Technology 2018年第2期20卷 82-86页

作者： M Yaqub KHAN javed IQBAL Department of Mathematics Riphah International University

Electron-temperature-gradient（ETG）-driven solitons are studied in a *** derive the linear dispersion relation and an admitted solitary wave solution Korteweg–de Vries-typeequation（Kd V）for the ETG mode in the nonlinear regime by using the Braginskii model and a *** is found that the ETG mode supports only rarefactive *** is also observed that the ratio of electron-to-ion temperature t=T T,e ithe ratio of gradient scale lengths h=L L,（en） Tand the magnetic field B affect both the amplitude and width of a *** is found that the soliton profile changes with variation in these *** apply the homotopy perturbation method to the derived Kd V *** is found this method is computationally attractive and the results are very *** work may be useful to study the low electrostatic modes in inhomogeneous electron–ion plasma with density and *** illustration,the model has been applied to tokamak plasma.

关键词： ETG mode KdV equation HPM

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Magnetoelectric effect in multiferroic NdMn2O5

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Chinese Physics B 2017年第1期26卷 526-529页

作者： Syed Hamad Bukhari javed Ahmad Department of Physics Bahauddin Zakariya University Multan 60800 Pakistan

We have measured the dielectric constant for NdMn2O5 in an external magnetic field to map out the magnetoelectric phase diagram. The phase diagram corresponds well with the previously reported data of neutron diffraction and magnetic susceptibility. Our main finding is the observation of a dielectric anomaly in the low temperature phase with a strong magnetoelectric effect, which is attributed to the independent Nd^3＋ ordering. Moreover, the absence of the dielectric anomaly in the paramagnetic phase is discussed, keeping in view the exchange interaction and its dependence on the rareearth R^3＋ ionic radius.

关键词： sol–gel synthesis dielectric constant magnetoelectric effect phase transition

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Investigation of ageing effects on the electrical properties of polyaniline/silver nanocomposites

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Chinese Physics B 2011年第5期20卷 424-432页

作者： Asma Binat Afzal Muhammad javed Akhtar Physics Division PINSTECHP.O.NiloreIslamabad 45650Pakistan Department of Chemical and Material Engineering PIEASIslamabad 45650Pakistan

Polyaniline（PANI）/Ag nanocomposites, synthesized by incorporation of separately prepared silver nanoparticles in 1-methyl-2-pyrrolidinone（NMP） solution of PANI, have been aged at the accelerated temperature of 120℃ to simulate a storage period of 2 years at 25℃. The accelerated ageing of these materials is done by using the activation energy calculated from data collected using heat flow calorimetry （HFC）. The impedance spectroscopic studies of NMP plasticized aged nanocomposite films suggest a microphase separation into reduced and oxidized repeat units. There is crosslinking of the lPANI films during ageing thereby obstructing the charge transfer between PANI chains and silver nanoparticles. As a result, the resistivity is increased.

关键词： polyaniline Ag nanoparticles impedance spectroscopy ageing

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Salsola imbricata *** acetic acid-induced inflammatory bowel disease by modulating dysregulated antioxidant enzyme system and cytokine signaling pathways in mice

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Asian Pacific Journal of Tropical Biomedicine 2021年第12期11卷 527-534页

作者： Faraza javed Qaiser Jabeen Department of Pharmacology Faculty of PharmacyThe Islamia University of BahawalpurPakistan

Objective:To explore the protective effect of the crude extract of Salsola imbricata against acetic acid-induced inflammatory bowel disease in mice and its mechanism of ***:Ethanolic crude extract of Salsola imbricata was characterized by *** imbricata extract at different doses was administered and ulcerative colitis was induced by 200μL,7.5%acetic acid and macroscopic parameters were evaluated to assess the homeostatic condition of intestinal mucosa along with hematological and biochemical *** levels of malondialdehyde,glutathione peroxidase 1,superoxide dismutase,and catalase were determined in colon *** cytokines including interleukin(IL)-1β,IL-6,and tumor necrosis factor-α(TNF-α)were quantified by *** extent of tissue damage was assessed by histological ***:Phytochemical analysis confirmed the presence of phytochemicals including quercetin,gallic acid,syringic acid,benzoic acid and chlorogenic acid in the crude *** crude extract of Salsola imbricata(300 and 500 mg/kg)markedly decreased malondialdehyde and nitric oxide(P<0.01)and increased antioxidant activities of glutathione peroxidase 1(P<0.001)and superoxide dismutase(P<0.001).Moreover,it decreased the levels of IL-1β,IL-6 and TNF-αsignificantly(P<0.001)and reduced the damage to the colon mucosa,promoting tissue healing and ***:Salsola imbricata extract restores the colonic epithelial layers by maintaining mucosal homeostasis and cell integrity by modulating antioxidant defense system and inflammatory cytokine signaling in ulcerative colitis mice.

关键词： Salsola imbricata Acetic acid Antioxidant enzymes Cytokines Inflammation Reactive oxygen species

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Formation control of quad-rotor UAV via PIO

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Science China(Technological Sciences) 2022年第2期65卷 432-439页

作者： BAI TingTing WANG DaoBo MASOOD Rana javed College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China Department of Electrical Engineering Usman Institute of TechnologyKarachi 75850Pakistan

In this article, the formation control of quad-rotor unmanned aerial vehicle(UAV) via pigeon inspired optimization(PIO) is designed. The nonlinear mathematical model of the quad-rotor UAV is used by applying algebraic graph theory and matrix analysis. A high order consistent formation control algorithm with fixed control topology is designed by using a position deviation matrix to describe its formation. To control the attitude of quad-rotor UAVs, it is difficult to obtain a set of optimal solutions, and hence a PIO based algorithm with variable weight hybridization is proposed. The algorithm is mainly composed of two parts. First, according to the distance between the particles in the iterative process, the inertia weight is dynamically changed,and the coefficient is adjusted to control the degree of influence on its inertia weight. Second, the overall scenario is designed by using MATLAB based simulations which show that the formation control of the quad-rotor UAV is achieved with the help of PIO.

关键词： pigeon inspired optimization formation control unmanned aerial vehicle and quad-rotor UAV

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Effect of Lanthanum on Nodule Count and Nodularity of Ductile Iron

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Journal of Rare Earths 2007年第5期25卷 533-536页

作者： M. Ashraf Sheikh javed Iqbal University of Engineering & Technology

The present study aims at finding out the effect of the addition of a single rare earth element, that is, lanthanum on the nodularity and nodule count of ductile iron under controlled conditions. For this purpose, four melts with different compositions were made, using a 28 kg inductotherm medium frequency induction furnace. The temperature was carefully maintained between 1400 and 1450 ℃ for these heats. A good quality charge consisting of Sorel metal, ferrosilicon, Swedish iron, ferrosilicon magnesium, and ferrosilicon lanthanum was used for the production of melts. A vertically parted sand mould was used for casting of 10 test bars made from local silica sand. Standard coin samples were chill-cast to conduct chemical analysis of the ductile iron. Mierostructure study of the samples was conducted using a Leica optical microscope. Nodule count and nodularity of the samples were carried out using an image analyzer. The results obtained indicated that with the increased addition of lanthanum the nodule count of ductile iron increased, thus making it evident that it played a significant role in increasing the mechanical properties. The highest nodule count of 467 was obtained with the addition of 0.03% lanthanum. However, the effect of lanthanum on nodularity was negligible with nodularity ranging from 81% to 83 %.

关键词： ductile iron mischmetal nodulization nodulafity nodule count rare earths

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