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Search Results: 1 - 10 of 641 matches for " Samira Yavari "
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Adjustment of Preoperative Fasting Guidelines for Adult Patients Undergoing Elective Surgery  [PDF]
Eissa Bilehjani, Solmaz Fakhari, Samira Yavari, Jafar Rahimi Panahi, Mohammadreza Afhami, Bahman Nagipour, Hojjat Pourfathi, Haleh Farzin, Ladan Javidi
Open Journal of Internal Medicine (OJIM) , 2015, DOI: 10.4236/ojim.2015.54016
Abstract: Introduction: The typical order of nothing per oral (NPO) after midnight has been challenged in recent years, thus the American Society of Anesthesiology (ASA) revised in practice guidelines for preoperative fasting in healthy patients undergoing elective procedures, but many studies have showed that guidelines were not considered in clinical practice. The aim of this study was to evaluate the adjustment of preoperative NPO time with fasting guidelines in adult elective ophthalmic surgeries in a university educational ophthalmology hospital in Tabriz, Iran. Methods: In 3 months period, this descriptive study was conducted on 250 patients who scheduled for elective eye surgery. The investigator interviewed with patients before beginning of anesthesia and evaluated fasting duration for heavy meal, light meal and clear liquids and his or her satisfaction from NPO time and also investigated which staff recommended NPO time before anesthesia induction. Results: Fasting duration from heavy and light meal and clear liquids was 14.31 hours (8 - 23 hours), 12.46 hours (6 - 21 hours) and 11.54 hours (3 - 18 hours), respectively, that was not consistent with ASA guidelines. The discontent of the patients from prolonged NPO time was 60.8%. The most complaint was thirsty (42%). Ward nurses were the personnel who had the primary role in patients fasting time period (47.6%). Conclusion: Preoperative fasting duration for heavy and light meal and clear liquids for elective ophthalmic surgery in this teaching hospital was very long and not consistent with ASA guidelines. Ward nurses had the major role in this malpractice. Thus it seems that personnel education may be very helpful.
The Effect of Swimming in Reduction of Depression in University Male Students
Abbass Yavari
Research Journal of Biological Sciences , 2012,
Abstract: Swimming can increase the compatibility of depressed patients and reduce their disease symptoms. To assess the effect of swimming as a therapeutic management on depressed Male university students. Among 300 participants from Tabriz medical university 74 student were chosen by using the Beck Depression Inventory (BDI), whose scores was higher than 19 and were divided randomly into two groups (control groups = 37 and trial group = 37) then therapeutic method of swimming was used in trial group for 12-15 sessions. At the end of the course 2 groups were again evaluated by the device (BDI). Findings showed that swimming as a therapeutic management has been meaningfully caused the reduction of severity of depression in trial group (p<0/001). and in control group that haven`t received this treatment method, found no statistically reduction in test scores (p>5%). This research suggest that swimming sport could reduce depression symptoms and therefore can be used lonely or with other clinical management to reduce of depression severity.
Mechanisms of Exercise-Induced Glucose Uptake: Evidences and Hypothesises
Abbas Yavari
Research Journal of Biological Sciences , 2012,
Abstract: Exercise can increase glucose uptake into skeletal muscle through an insulin-like effect. Mechanisms that control the homeostasis of glucose during muscle contracting, have not been known completely, but in the past several years significant progress about understanding of molecular basis of exercise effects has been provided. A central issue in exercise biology is to elucidate the underlying molecular signaling mechanisms that regulate important metabolic and transcriptional events in skeletal muscle that lead to reduction of blood glucose and improvement of impaired insulin action in diabetic people.
Superconductivity in single wall carbon nanotubes
H Yavari
Iranian Journal of Physics Research , 2009,
Abstract: By using Greens function method we first show that the effective interaction between two electrons mediated by plasmon exchange can become attractive which in turn can lead to superconductivity at a high critical temperature in a singl wall carbon nanotubes (SWCNT). The superconducting transition temperature Tc for the SWCNT (3,3) obtained by this mechanism agrees with the recent experimental result. We also show as the radius of SWCNT increases, plasmon frequency becomes lower and leads to lower Tc.
The Effect of Swimming in Reduction of Depression in University Male Students
Abbass Yavari
Research Journal of Biological Sciences , 2008,
Abstract: Swimming can increase the compatibility of depressed patients and reduce their disease symptoms. To assess the effect of swimming as a therapeutic management on depressed Male university students. Among 300 participants from Tabriz medical university 74 student were chosen by using the Beck Depression Inventory (BDI), whose scores was higher than 19 and were divided randomly into two groups (control groups = 37 and trial group = 37) then therapeutic method of swimming was used in trial group for 12-15 sessions. At the end of the course 2 groups were again evaluated by the device (BDI). Findings showed that swimming as a therapeutic management has been meaningfully caused the reduction of severity of depression in trial group (p<0/001). and in control group that haven`t received this treatment method, found no statistically reduction in test scores (p>5%). This research suggest that swimming sport could reduce depression symptoms and therefore can be used lonely or with other clinical management to reduce of depression severity.
Mechanisms of Exercise-Induced Glucose Uptake: Evidences and Hypothesises
Abbas Yavari
Research Journal of Biological Sciences , 2008,
Abstract: Exercise can increase glucose uptake into skeletal muscle through an insulin-like effect. Mechanisms that control the homeostasis of glucose during muscle contracting, have not been known completely, but in the past several years significant progress about understanding of molecular basis of exercise effects has been provided. A central issue in exercise biology is to elucidate the underlying molecular signaling mechanisms that regulate important metabolic and transcriptional events in skeletal muscle that lead to reduction of blood glucose and improvement of impaired insulin action in diabetic people.
Glycosylated Hemoglobin: The Importance in Management of Type 2 Diabetes
Abbas Yavari
Journal of Stress Physiology & Biochemistry , 2011,
Abstract: Type 2 diabetes is a major public health problem with high and increasing prevalence, morbidity and mortality. The association between diabetes and microvascular and macrovascular complications is well known besides, tight glycemic control is a necessity. HbA1C has clinically been used since 1980s as a gold standard for monitoring glycemic control and predicting of diabetic complications. The present review article was prepared by computerized sources of literature searches 2000 - 2009.The history of Hemoglobin A1C, its assay techniques, optimal A1C targets, its reliability in control of diabetic complications, limitations of test results and its importance in control of diabetes patients and their complications are discussed.
ABUSE OF ANABOLIC ANDROGENIC STEROIDS
Abbas Yavari
Journal of Stress Physiology & Biochemistry , 2009,
Abstract: According to the International Olympic Committee, the abuse of anabolic androgenic steroids (AASS) is found in over 50% of positive doping tests. AASS abuse is not restricted to the organized sports andwidespread use. It remains as an unsolved public-health problem.Lower black market price, easier access to AASS, bodybuilding clubs and internet advertising are factors of this increasingly misuse. There is not real data about the prevalence of AASS abuse in various populations or countries, because most of athletes or students, due to their prohibition or ethical aspects do not admit to AASS abuse. Often they are aware of the risks of their choice and yet, are eager to put themselves at risk without deeper consideration. The abusers use them to improve their physical fitness and appearance.Present article has been collected to elucidate the risks and adverse effects of AASS and explanation of mechanisms of these events.
A Geometric Theory of Growth Mechanics
Arash Yavari
Mathematics , 2009, DOI: 10.1007/s00332-010-9073-y
Abstract: In this paper we formulate a geometric theory of the mechanics of growing solids. Bulk growth is modeled by a material manifold with an evolving metric. Time dependence of metric represents the evolution of the stress-free (natural) configuration of the body in response to changes in mass density and "shape". We show that time dependency of material metric will affect the energy balance and the entropy production inequality; both the energy balance and the entropy production inequality have to be modified. We then obtain the governing equations covariantly by postulating invariance of energy balance under time-dependent spatial diffeomorphisms. We use the principle of maximum entropy production in deriving an evolution equation for the material metric. In the case of isotropic growth, we find those growth distributions that do not result in residual stresses. We then look at Lagrangian field theory of growing elastic solids. We will use the Lagrange-d'Alembert's principle with Rayleigh's dissipation functions to derive all the governing equations. We make an explicit connection between our geometric theory and the conventional multiplicative decomposition of deformation gradient $\mathbf{F}=\mathbf{F}_e\mathbf{F}_g$ into growth and elastic parts. We linearize the nonlinear theory and derive a linearized theory of growth mechanics. Finally, we obtain the stress-free growth distributions in the linearized theory.
Spatio-Temporal Patterns of Wildlife Road Mortality in Golestan National Park-North East of Iran  [PDF]
Vahed Dehghani Kazemi, Hamidreza Jafari, Ahmadreza Yavari
Open Journal of Ecology (OJE) , 2016, DOI: 10.4236/oje.2016.66031
Abstract: Nowadays, wildlife road mortality is acknowledged as a main source of threatening long-term survival of wildlife. This paper as the first to analysis wild life vehicle collisions in Iran, aims to reconstruct and interpret the spatio-temporal patterns of WVCs on Asiaei highway in Golestan National Park (GNP). With the collaboration of environmental protection department of GNP, we identified about 1900 WVC Records involving 34 different species of mammals, birds, reptiles and amphibians between 2004 and 2013. Mammals were involved in more than 50% of overall WVCs, among which wild boar (Sus scrofa), Golden Jackal (Canis aureus), Red Fox (Vulpes vulpes), hedgehog (Erinaceus concolor), stone marten (Martes foina) and porcupine (Hystrix indica) were involved in more than 90% of mammals’ mortalities; So, we focused on analyzing spatio-temporal pattern of vehicle collisions of these six mammal species. During the study period, these species have undergone 95% increase in road mortalities, averagely. Detailed temporal analyses exhibited an increasing trend of road mortalities from spring to summer and then a reducing one to late winter. It was shown that a large number of collisions occurred in holiday periods when recreational trips considerably increased the traffic volume of Asiaei highway. Preliminary inspection of spatial patterns using Kernel density analysis revealed six collision hotspots, mostly located in the road bends with densely forested land cover on both sides; the promenades along the road seemed to play a significant role too. Scale dependency analyses of collision patterns, demonstrated clustering pattern at micro scales less than 10 km, randomness at meso scales 10 - 20 km and both regularity and clustering at macro scales more than 20 km. This paper suggests that road mortality of common species in GNP is a momentous issue, which needs to be considered by relevant governmental and public organizations. We also emphasize that the analyses of spatial and temporal patterns of WVCs are fundamentals to plan for mitigate wildlife road mortality.
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