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Search Results: 1 - 10 of 2369 matches for " Aso Saeed "
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A Model for FeSiMg Alloy Production by Reduction Technique  [PDF]
Saeed Nabil Saeed Ghali
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.109067
Abstract: Ferrosilicon magnesium is basic foundry alloys used for the production of ductile cast iron. Magnesium content plays an important role in the produced alloy grades from dolomite ore. The focus of the present work is to simulate mathematical model to predict magnesium content in the ferrosilicon magnesium, which produced by silicothermic reduction of calcined dolomite. The basic assumptions of this model are: constant low viscosity of molten charge, the reaction is irreversible of second order and the reaction is isothermal. The reaction is based on the following equation: 2MgO+2Si →Mg2Si+SiO2 The results of previous work was found to be in a good coincidence with the predicted values by the model [Mg]=(MgO0)[Si0][eKt[(MgO0)-[Si0]]-1]/ (MgO0)[eKt[(MgO0)-[Si0]]-[Si0]] where [Mg] is the concentration of magnesium metal in ferrosilicon magnesium alloy in mol/L. [Si0] and (MgO0) are the initial concentration of silicon and magnesium oxide in charge in mol/L, while t is time in second, K is the reaction rate constant ( 3.26588x10-7 L Sec-1 mol-1). The predicted values are greater than the experimental values; this may be attributed to the use of concentration instead of the activity. The predicted values of magnesium content in ferrosilicon magnesium alloy are in a good agreement with the experimental results obtained in previous work at low viscosity.
Oxidative Stress and Inflammation in Renal Patients and Healthy Subjects
Diana M. Lee, Kenneth W. Jackson, Nicholas Knowlton, Joshua Wages, Petar Alaupovic, Ola Samuelsson, Aso Saeed, Michael Centola, Per-Ola Attman
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0022360
Abstract: The first goal of this study was to measure the oxidative stress (OS) and relate it to lipoprotein variables in 35 renal patients before dialysis (CKD), 37 on hemodialysis (HD) and 63 healthy subjects. The method for OS was based on the ratio of cholesteryl esters (CE) containing C18/C16 fatty acids (R2) measured by gas chromatography (GC) which is a simple, direct, rapid and reliable procedure. The second goal was to investigate and identify a triacylglycerol peak on GC, referred to as TG48 (48 represents the sum of the three fatty acids carbon chain lengths) which was markedly increased in renal patients compared to healthy controls. We measured TG48 in patients and controls. Mass spectrometry (MS) and MS twice in tandem were used to analyze the fatty acid composition of TG48. MS showed that TG48 was abundant in saturated fatty acids (SFAs) that were known for their pro-inflammatory property. TG48 was significantly and inversely correlated with OS. Renal patients were characterized by higher OS and inflammation than healthy subjects. Inflammation correlated strongly with TG, VLDL-cholesterol, apolipoprotein (apo) C-III and apoC-III bound to apoB-containing lipoproteins, but not with either total cholesterol or LDL-cholesterol. In conclusion, we have discovered a new inflammatory factor, TG48. It is characterized with TG rich in saturated fatty acids. Renal patients have increased TG48 than healthy controls.
Relationship between Cognition and Activities of Daily Living in Elderly Women with Mild Cognitive Impairment in Japan  [PDF]
Miwa Yamamoto, Kyoko Izumi, Yoko Aso
International Journal of Clinical Medicine (IJCM) , 2012, DOI: 10.4236/ijcm.2012.34050
Abstract: Purpose: This study aims to examine the relationship between cognition and ADL in elderly women with MIC. Methods: Cognitive function was assessed using a 4-item instrument screening for dementia. Each item was scaled from 1 to 4. The Katz Index was used to Participants (N = 680) were asked to return the completed questionnaire in the sealed envelope provided. The study received approval from the human subject’s ethics committee at Osaka University. Results and Conclusion: Participants’ mean age was 78.2 ± 6.5 years old. The age range of participants was 65 to 97 years old. Associations were not statistically significant between cognitive function and family structure. However, associations were significant for ADL items involving excretory failure (OR = 3.5, p = 0.000 in 2004, OR = 2.9, p = 0.000 in 2005; P < 0.05) using a logistic regression analysis adjusted for age. Therefore, we recommend that nurses work to educate the public about treatment-adjusted dementia in the community, teaching family members or caretakers to observe the ADL of the elderly, being watchful for unusual excretory habits, extra clothes, or the smell of elderly persons’ dirty clothing.
Effect of Fuselage Cross Section on Aerodynamic Characteristics of Reusable Launch Vehicles  [PDF]
Kenji Tadakuma, Yasuhiro Tani, Shigeru Aso
Open Journal of Fluid Dynamics (OJFD) , 2016, DOI: 10.4236/ojfd.2016.63017
Abstract: An experimental study on examining aerodynamic characteristics of fuselage cross sections for RLVs (Reusable Launch Vehicles) was conducted at Mach number 0.3, 0.9 and 4.0 in the wind tunnel of ISAS (Institute of Space and Astronautical Science), JAXA (Japan Aerospace Exploration Agency). Three bodies, having the same projected area and length, with and without a set of fins, were tested. Their cross sections are a circle, a square and a triangle with rounded corners. The results showed that the fuselage cross sections had large effects on aerodynamic characteristics in subsonic and transonic flow. The lift coefficient of the model having the triangular cross section with a set of the fins was larger than that of the others in high angles of attack region due to contributions of the separation vortices generated from the fuselage expanding to the wing surface.
Percutaneous Nephrolithotomy in Obese Patients, Is There Any Challenge?  [PDF]
Aso Omer Rashid, Mahmmod Mohammed Yahya
Open Journal of Urology (OJU) , 2018, DOI: 10.4236/oju.2018.82006
Abstract: Percutaneous nephrolithotomy (PNL) is a safe and effective procedure in the treatment of large renal stones in obese and non-obese patients with low rate of morbidity and high success rate in different groups of body mass index (BMI), some surgeons believe that morbid obesity increases the risk of complications of PNL, but different recent studies showed there were no significant differences. Objective: To analyze the outcomes of PNL in patients with different BMI and to assess the effects of obesity in the result of PNL in terms of efficacy & safety regarding total operative time, blood transfusion, organ injury, stone clearance, hospital stay, and the need of auxiliary procedures. Patients and methods: This is a prospective study on patients with different body mass indexes need PNL. Age above 18 years with no co-morbidity had been included in this study from Jan 2015-Oct 2016 in governmental & two private hospitals in Sulaimania, after application of exclusion and inclusion criteria. All patients had a questioner’s paper to agree on participation in this study. Patients were classified into 3 groups according to the World Health Organization (WHO) classification of body mass index (BMI). Standard PNL with ideal instruments had been used. Intra operative and post-operative findings recorded in Excel data sheet. The patients were followed for one month. The outcomes in these 3 groups were compared. Results & analysis of the data: A total 117 patients had PNL. There was no any statistically significant difference between different BMI groups intra operatively & post operatively in this study with (P value < 0.05) regarding stone clearance, operative time, hospital stay, organ injury, Hemoglobin drop, post-operative renal impairment, and post-operative fever. Conclusion: PNL operation is a relatively safe & efficacious treatment for patients having renal stone with different BMI range from normal to obese patients without significant challenge.
An Overview of the Consequences of Distal Coronary Microembolization on Left Ventricular Function, Perfusion and Viability  [PDF]
Maythem Saeed
International Journal of Clinical Medicine (IJCM) , 2011, DOI: 10.4236/ijcm.2011.21009
Abstract: Annually, an estimated 1,285,000 in-patient angioplasty procedures, 1,471,000 inpatient diagnostic cardiac catheteri-zations and 68,000 inpatient defibrillator implantations are performed. The direct and indirect cost of cardiovascular diseases for 2007 is approximately $431.8 billion. The occurrence of plaque rupture with subsequent microemboli of atherosclerotic and thrombolytic debris into small coronary vessels has been confirmed. Microinfarction results from microemboli that are shed following coronary interventions. The aims of this review are to: 1) detect heterogeneous microinfarction using viability imaging, 2) characterize the consequences of distal coronary microembolization on left ventricle function and perfusion and 3) illustrate the progress of non-invasive imaging modalities in assessing distal coronary microembolization.
A New Iterative Solution Method for Solving Multiple Linear Systems  [PDF]
Saeed Karimi
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2012, DOI: 10.4236/alamt.2012.23004
Abstract: In this paper, a new iterative solution method is proposed for solving multiple linear systems A(i)x(i)=b(i), for 1≤ i ≤ s, where the coefficient matrices A(i) and the right-hand sides b(i) are arbitrary in general. The proposed method is based on the global least squares (GL-LSQR) method. A linear operator is defined to connect all the linear systems together. To approximate all numerical solutions of the multiple linear systems simultaneously, the GL-LSQR method is applied for the operator and the approximate solutions are obtained recursively. The presented method is compared with the well-known LSQR method. Finally, numerical experiments on test matrices are presented to show the efficiency of the new method.
Bioética de la actividad pericial médica
Aso Escario,J.;
Cuadernos de Medicina Forense , 2009, DOI: 10.4321/S1135-76062009000200001
Abstract: bioethics involves the entire medical activity, becoming, in recent years, a crucial factor in evaluating medical matters such as publications, conferences, articles, and clinical cases analysis. nevertheless, expert-witness testimony is sheldomly included in bioethic discussions, despite the important problems that arise from medical testimonies in tribunals. factors as expert qualification, bias, error, confidentiality, conflict between clinical and expert activities, are among the main potential subjects of ethical discussion. in spain in particular, there is a lack of regulation in these matters, determining important consequences mainly in professional responsability judgement cases. the present paper tries to review the spanish situation, compared to abroad positions, and enphasize the need of a more extensive legal, professional but mainly ethical regulation of medical expert testimony in court in spain.
Líneas guía en autopsias por sospecha de mala praxis asistencial
Aso Escario,J.;
Cuadernos de Medicina Forense , 2011, DOI: 10.4321/S1135-76062011000400001
Abstract: the present paper reviews the guidelines for autopsy in cases of suspected clinical malpractice. indications, general purposes, dissection techniques, laboratory and complementary examinations, as well as ethical problems are revised, according to the author's experience and literature review. a significant degree of training and skill, both clinical and pathologically, are required. this needing can contrast with the relative lack of specialization of forensic pathologists in spain, and limitations of the judicial autopsy in these cases. some guidelines to solve this problem, like independent expert consultation or advise by the specialties boards, are considered. important ethical issues can arise from these deaths, therefore, a needing of correct address of these issues is perceived. some orientations in this subject are considered.
Bioética de la actividad pericial médica Bioethics of Medical Expert-Witness Activity
J. Aso Escario
Cuadernos de Medicina Forense , 2009,
Abstract: La Bioética implica hoy en día a toda la actividad médica, habiéndose convertido en un factor crucial a la hora de orientar la acción en muchas situaciones clínicas y evaluar materias médicas tales como publicaciones, artículos y conferencias. Sin embargo, hasta el momento, la Bioética ha prestado poca atención a la actividad pericial médica. Ello a pesar de los importantes problemas que surgen en los peritajes ante los Tribunales. Factores como la cualificación del perito, sesgo, error, confidencialidad, conflictos entre actividad asistencial y pericial, están entre las principales materias potenciales de discusión ética. En Espa a, en particular, hay una falta de regulación de estos aspectos, causando importantes consecuencias sobre todo en casos de litigación por cuestiones de responsabilidad médica. El presente trabajo intenta revisar la situación en Espa a, comparada con las posiciones en el extranjero, y enfatizar la necesidad de una regulación legal, profesional pero sobre todo ética de la actividad pericial médica ante los Tribunales. Bioethics involves the entire medical activity, becoming, in recent years, a crucial factor in evaluating medical matters such as publications, conferences, articles, and clinical cases analysis. Nevertheless, expert-witness testimony is sheldomly included in Bioethic discussions, despite the important problems that arise from medical testimonies in tribunals. Factors as expert qualification, bias, error, confidentiality, conflict between clinical and expert activities, are among the main potential subjects of Ethical discussion. In Spain in particular, there is a lack of regulation in these matters, determining important consequences mainly in professional responsability judgement cases. The present paper tries to review the Spanish situation, compared to abroad positions, and enphasize the need of a more extensive legal, professional but mainly ethical regulation of medical expert testimony in court in Spain.
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