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6篇 您的检索式:作者名="Svorcan"
    题名 作者 年代 出处 被引量
1Mechanism of diarrhea in microscopic colitis显示文摘AIM: To search the pathophysiological mechanism of diarrhea based on daily stool weights, fecal electrolytes,osmotic gap and pH.METHODS: Seventy-six patients were included: 51 with microscopic colitis (MC) [40 with lymphocytic colitis (LC);11 with collagenous colitis (CC)]; 7 with MC without diarrhea and 18 as a control group (CG). They collected stool for 3 d. Sodium and potassium concentration were determined by flame photometry and chloride concentration by titration method of Schales. Fecal osmotic gap was calculated from the difference of osmolarity of fecal fluid and double sum of sodium and potassium concentration.RESULTS: Fecal fluid sodium concentration was significantly increased in LC 58.11±5.38 mmol/L (P<0.01)and CC 54.14±8.42 mmol/L (P<0.05) than in CG 34.28±2.98 mmol/L. Potassium concentration in LC 74.65±5.29 mmol/L (P<0.01) and CC 75.53±8.78 mmol/L (P<0.05) was significantly less compared to CG 92.67±2.99 mmol/L.Chloride concentration in CC 36.07±7.29 mmol/L was significantly higher than in CG 24.11±2.05 mmol/L (P<0.05).Forty-four (86.7%) patients had a secretory diarrhea compared to fecal osmotic gap. Seven (13.3%) patients had osmotic diarrhea.CONCLUSION: Diarrhea in MC mostly belongs to the secretory type. The major pathophysiological mechanism in LC could be explained by a decrease of active sodium absorption. In CC, decreased Cl/HCO3 exchange rate and increased chloride secretion are coexistent pathways.Marijana Protic Njegica Jojic Daniela Bojic Svetlana Milutinovic Dusanka Necic Bozidar Bojic Petar Svorcan Miodrag Krstic Obren Popovic 2005World Journal of Gastroenterology2005,11,35:5
2The influence of single and combined IL28B polymorphisms on response to treatment of chronic hepatitis C显示文摘Ivana Lazarevic Jelena Djordjevic Maja Cupic Danijela Karalic Dragan Delic Neda Svirtlih Jasmina Simonovic Petar Svorcan Natasa Milic Tanja Jovanovic 2013Journal of Clinical Virology2013,,:2
3Numerical investigation on the aerodynamic characteristics of high-speed train under turbulent crosswind显示文摘Increasing velocity combined with decreasing mass of modern high-speed trains poses a question about the influence of strong crosswinds on its aerodynamics.Strong crosswinds may affect the running stability of highspeed trains via the amplified aerodynamic forces and moments. In this study, a simulation of turbulent crosswind flows over the leading and end cars of ICE-2 high-speed train was performed at different yaw angles in static and moving ground case scenarios. Since the train aerodynamic problems are closely associated with the flows occurring around train, the flow around the train was considered as incompressible and was obtained by solving the incompressible form of the unsteady Reynolds-averaged Navier–Stokes(RANS) equations combined with the realizable k-epsilon turbulence model. Important aerodynamic coefficients such as the side force and rolling moment coefficients were calculated for yaw angles ranging from-30° to60° and compared with the results obtained from wind tunnel test. The dependence of the flow structure on yaw angle was also presented. The nature of the flow field and its structure depicted by contours of velocity magnitude and streamline patterns along the train's cross-section were presented for different yaw angles. In addition, the pressure coefficient around the circumference of the train at different locations along its length was computed for yaw angles of 30° and 60°. The computed aerodynamic coefficient outcomes using the realizable k-epsilon turbulencemodel were in good agreement with the wind tunnel data.Both the side force coefficient and rolling moment coefficients increase steadily with yaw angle till about 50° before starting to exhibit an asymptotic behavior. Contours of velocity magnitude were also computed at different crosssections of the train along its length for different yaw angles. The result showed that magnitude of rotating vortex in the lee ward side increased with increasing yaw angle,which leads to the creation of a low-pressure region in the lee ward side of the train causing high side force and roll moment. Generally, this study shows that unsteady CFDRANS methods combined with an appropriate turbulence model can present an important means of assessing the crucial aerodynamic forces and moments of a high-speed train under strong crosswind conditions.Mulugeta Biadgo Asress Jelena Svorcan 2014Journal of Modern Transportation2014,22,4:2
4CFD analyses for passive house with Trombe wall and impact to energy demand 显示文摘Bajc T Todorovic M N Svorcan J 2015Energy and Buildings2015,98,:1
5Old age as a privilege of the 'selfish ones'显示文摘Davidovic M Sevo G Svorcan P 0,,:1
6Splenomegaly and thrombocytopenia in patients with liver cirrhosis 显示文摘Djordjevic J Svorcan P Vrinic D et al 2010Vojnosanit Pregl2010,67,2:1
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