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Search Results: 1 - 10 of 44908 matches for " Manesh Michael "
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Kadomstev-Petviashvilli-Burgers (KPB) Equation in a Five Component Cometary Plasma with Kappa Described Electrons and Ions  [PDF]
Manesh Michael, Sreekala Gopinathan, Sijo Sebastian, Neethu T. Willington, Anu Varghese, Renuka Gangadharan, Chandu Venugopal
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.311171
Abstract: We investigate the existence of Ion-Acoustic solitary/shock waves in a five component cometary plasma consisting of positively and negatively charged oxygen ions, kappa described hydrogen ions, hot electrons and cold electrons. The KPB equation is derived for the system; its solution is plotted for different kappa values, as well as for the temperature ratios of ions. It is found that the amplitude of solitary structure increases with increasing kappa values and negatively charged oxygen ion densities. As the temperature of the positively charged oxygen ions increases, the amplitude of solitary wave also increases. We have also studied the dependence of coefficients of the KPB equation on physical parameters relevant to comet Halley.
The assessment of atrial function by velocity-encoded magnetic resonance imaging  [PDF]
Charles C. Vu, John F. Heitner, Igor Klem, Peter J. Cawley, Anna Lisa C. Crowley, Manesh R. Patel, Jonathan W. Weinsaft, Michele A. Parker, Michael Elliott, Robert M. Judd, Raymond J. Kim, Joseph C. Greenfield Jr.
World Journal of Cardiovascular Diseases (WJCD) , 2013, DOI: 10.4236/wjcd.2013.32A003
Abstract:

Introduction: The purpose of this study was to assess velocity-encoded cardiac magnetic resonance imaging (Ve-CMR) in a population of patients referred for cardiac magnetic resonance imaging (CMR), to determine the variability of atrial function, and to identify clinical parameters associated with left atrial function. Methods: This is a prospective study evaluating patients who were referred to our CMR center for a clinical CMR. Left atrial function was obtained via Ve-CMR thru-plane images across the mitral valve after acquiring 2 perpendicular in-plane images as “scouts”. The atrial function and mitral inflow were quantified by computer analysis (Argus, Siemens). Atrial function was defined as atrial contraction (A-wave) volume divided by total inflow volume. Left atrial volumes were calculated via computer analysis. Mitral regurgitation and left ventricular ejection fractions were assessed visually. Results: Thirty-nine patients, with mean age 56 +/- 10 years, were enrolled. The mean left atrial function was 22.9% +/-14.5%; the range in left atrial function was 0% - 57%. There was a significant positive correlation between atrial function and increased left ventricular ejection fraction (r = 0.44, P < 0.01). There was a significant negative correlation between atrial function and severity of mitral regurgitation (r = -0.60, P < 0.01), as well as left atrial volume (r = -0.36, P = 0.02). Conclusion: Our results indicate a wide variability in left atrial function and a significant association between left atrial function and left ventricular ejection fraction, left atrial volume and mitral regurgitation.

Risk Factors of First Acute Myocardial Infarction: Comparison of Elderly and Non-Elderly: A 24-Year Study  [PDF]
Soheila Dabiran, Behrooz Khaleghi Manesh, Farahnaz Khajehnasiri
Advances in Aging Research (AAR) , 2015, DOI: 10.4236/aar.2015.41002
Abstract: Although risk factors of Ischemic Heart Disease (IHD) are well known, knowledge about the distribution of these risk factors in different subgroups of patients can be used for designing preventive programs. The aim of this study was to assess differences of prevalence of IHD risk factors in elderly and non-elderly patients in their first Acute Myocardial Infarction (AMI). In this retros-pective study, elderly (age > 65; n = 1060) and non-elderly (age ≤ 65; n = 2228) patients with first AMI who were admitted into four teaching hospitals in Tehran between 1982 and 2005 were recruited. Risk factors containing male gender, systolic and diastolic hypertension (HTN), diabetes, hypertriglyceridemia, hypercholesterolemia, smoking and family history of IHD were compared between the two groups. Among different risk factors, diabetes and systolic HTN were more common in elderly than their non-elderly counterparts, and male gender, smoking, family history of IHD and dyslipidemia were more common in non-elderly patients than elderly ones (p < 0.05 for all comparison). Diastolic HTN showed no significant difference between the two groups. Findings of this study, stating difference of prevalence of risk factors in two elderly and non-elderly groups, can be used by health policy makers to conduct preventive programs for AMI in this country.
Theories of Equity in Health Care, Implications for Developed and Developing Countries
AR Olyaee Manesh
Iranian Journal of Public Health , 2005,
Abstract: Objective: This abstract focuses on theoretical background for the notion of “equity in health care” and on the implications of applying these theories to the health care of developed and developing countries. Equity Principals and the Implications: There are different theories about the principle of Equity or Justice such as Altruism, Utilitarians, Marxists, Rawls’ theory and Nazick’s entitlement. Among these theories, some of them are applicable to health care such as Libertarianism and Egalitarianism. The focus of the Libertarians is on the extent to which people are free to purchase the health care that they want. The Libertarians’ principle is the main equity base for private health systems. In contrast, Egalitarians suggest that finance of the health care should be according to the ability to pay and distribution of health care should be according to the need (ill health). It seems that policy makers in most developed countries such as European countries accept the Egalitarians’ principle and application of this equity principle by their health systems has significantly reduced health inequities and inequalities in these countries. There are a limited number of studies to look at equity in the health care of developing countries. A common equity principle for these countries is “equal access for everyone” and different mechanisms are applied to attain this target. Despite the overall improvements in health care in recent years, evidence indicates that many of developing countries have failed to provide equal access to health care for all in need. The financial limitations of the governments, spending about 70% of the health care resources on hospital-based care, unequal access to hospital services in favour of urban population, income inequalities among population, and lack of consistent and up-to-date information of inequalities, make developing countries unable to monitor and prevent inequities and inequalities of health care. Conclusion: The main equity principle in the health care of developed countries is Egalitarians’ principle in which, health care should be financed according to ability to pay and should be delivered according to the need. Applying the equity principals to the health care of developed countries has deeply promoted equitable health care in these countries. There are a limited number of studies about this issue in developing countries. A common equity target in these countries is “equal access for everyone in need” which is close to the Egalitarians’ point of view. However, some factors have hampered these countries’ attempt
A Method of Detecting Sql Injection Attack to Secure Web Applications
Sruthy Manmadhan,Manesh T
International Journal of Distributed and Parallel Systems , 2012,
Abstract: Web applications are becoming an important part of our daily life. So attacks against them also increasesrapidly. Of these attacks, a major role is held by SQL injection attacks (SQLIA). This paper proposes anew method for preventing SQL injection attacks in JSP web applications. The basic idea is to checkbefore execution, the intended structure of the SQL query. For this we use semantic comparison. Ourfocus is on stored procedure attack in which query will be formed within the database itself and sodifficult to extract that query structure for validation. Also this attack is less considered in the literature.
The Ups and Downs of Sex Life in Menopausal Stage: a Qualitative Study
M Jamshidi Manesh
Qom University of Medical Sciences Journal , 2012,
Abstract: Background and Objectives: The meaning of menopause and women experience of this transitional stage are related to cultural norms, social factors and one's knowledge of menopause. Women’s image of menopasuse affects self-care and follow-ups during this stage. Among them is consideration of sexuality which is often ignored. The aim of this study was to discover menopausal complications in Iranian women. Methods: 14 women in menopausal stage were interviewed about their clinical experience. The interviews were transcribed and then analyzed using Van Manen’s phenomenology technique. Result: Data analysis showed that one of the women's most important clinical experiences of menopause which they can deliberately express was the start of a new stage. Since, according to those women, changes in their life style were being made in comparison with earlier stages, one of the most important problems that escaped unobserved was sexual challenges which started at this stage. Conclusion: The findings this study reveal women's beliefs about their sex life. This can be used as a basis for education and offering guidelines in order to increase their quality of life.
Accuracy of Endosonography in the Diagnosis of Obstructive Jaundice
R Sotoudeh Manesh
Qom University of Medical Sciences Journal , 2012,
Abstract: Background and Objectives: Endoscopic retrograde cholangiopancreatography (ERCP) has been used as the method of choice in assessment of obstructive jaundice for a long time. Recently, the development of endoscopic ultrasonography (EUS) has attracted the attention of clinicians as an alternative accurate, safe and cheap method to replace the ERCP procedures performed only for diagnostic purposes. Methods: In this study, 100 patients underwent endoscopic ultrasonography in Digestive Disease Research Center, Shariati Hospital. The patients were divided into two groups: 1) those with operable periampullary tumors who were referred to the surgeons, 2) other patients. The final diagnosis made after ERCP and operative removal of the mass was considered as the gold standard and was compared with accuracy of endoscopic ultrasonography. Results: The overall accuracy of endoscopic ultrasonography in the diagnosis of obstructive cholestasis was 92.0%. Sensitivity and specificity of this method in diagnosis of choledocholithiasis were 95.2% and 96.4% respectively. The corresponding values for diagnosis of periampullary tumors were 96.2% and 95.8%. Conclusion: In this study the accuracy of EUS in diagnosis of obstructive jaundice and its sensitivity and specificity for diagnosis of choledocholithiasis and periampullary tumors were high. Therefore, it could be concluded that endoscopic ultrasonography is a reliable diagnostic tool for extrahepatic cholestasis.
Influence of poly germander (Teucrium polium) and watercress (Nasturtium officinale) extract on performance, carcass quality and blood metabolites of male broilers
Mostaan Khosravi Manesh
Research Opinions in Animal & Veterinary Sciences , 2012,
Abstract: This experiment was conducted to study effect of poly germander (Teucrium polium) and watercress (Nasturtium officinale) extracts on performance and serum biochemistryl of broilers. Two hundred and forty male Ross broilers (were alloted into 4 diet treatments for 42 days. The birds were fed their standard feed without any addition (control) or with addition of 200 ppm of poly germander extract (T1), 200 ppm watercress extract (T2) or 200 ppm of the combination of both components (T4). No significant change was observed in term of growth parameters and blood biochemistry, however, abdominal fat decreased significantly in the watercress and the combination extracts supplemented groups. The study highlighted the potential of these herbal extracts to improve body performance and carcass quality of broilers.
Optimization of Bit Plane Combination for Efficient Digital Image Watermarking
Sushma Kejgir,Manesh Kokare
Computer Science , 2009,
Abstract: In view of the frequent multimedia data transfer authentication and protection of images has gained importance in todays world. In this paper we propose a new watermarking technique, based on bit plane, which enhances robustness and capacity of the watermark, as well as maintains transparency of the watermark and fidelity of the image. In the proposed technique, higher strength bit plane of digital signature watermark is embedded in to a significant bit plane of the original image. The combination of bit planes (image and watermark) selection is an important issue. Therefore, a mechanism is developed for appropriate bit plane selection. Ten different attacks are selected to test different alternatives. These attacks are given different weightings as appropriate to user requirement. A weighted correlation coefficient for retrieved watermark is estimated for each of the alternatives. Based on these estimated values optimal bit plane combination is identified for a given user requirement. The proposed method is found to be useful for authentication and to prove legal ownership. We observed better results by our proposed method in comparison with the previously reported work on pseudorandom watermark embedded in least significant bit (LSB) plane.
Facile regeneration of carbonyl compounds from oximes under microwave irradiations using N-bromophthalimide
Khazaei, Ardeshir;Manesh, Abbas Amini;
Journal of the Brazilian Chemical Society , 2005, DOI: 10.1590/S0103-50532005000500030
Abstract: a new and selective method for the cleavage of oximes has been achieved by a simple reaction of a ketoxime or an aldoxime with n-bromophthalimide (nbpi) in acetone under microwave irradiations.
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