the main objective of an ecosystem sustainable management is to preserve itscapacity to respond and adapt to current disturbances and/or future changes, and maintain theprovision of environmental goods and services. two very important properties linked to thisobjective are the ecosystem resilience and resistance to disturbance factors. the objective ofthis paper is to recommend conceptual modif...

existence of capacity drop phenomenon, as the difference between pre-queue and queue discharge flow rates, has been one of the controversial concepts of traffic engineering. several researches have focused on capacity drop existence and also its estimation issues. this paper aims to estimate capacity drop based not only on a comparison between breakdown and queue discharge flow rates, but also ...

introduction: renal failure affects the mechanical and the ventilatory function of the lungs. a few studies have evaluated the ventilatory and pulmonary function in dialysis patients. the present study aimed to compare pulmonary function test (pft) results in patients undergoing hemodialysis (hd) and peritoneal dialysis (pd). materials and methods: we conducted a cross-sectional study on 50  pa...

introduction zinc is a vital micronutrient in humans and its deficiency in children can thwart their growth and development, compromise their immunity and cognitive function. however, there is a paucity of studies about the effect of zinc supplementation on cognitive functions. this study is an attempt to quantify the impact of zinc supplementation on cognitive performance of schoolchildren. ma...

introduction in children with nephrotic syndrome, it is probable to determine a hypothyroid state because of thyroxine (t4), tri-iodothyronine (t3) and thyroid-binding globulin loss in presence of proteinuria. objectives: to examine thyroid function in pediatric cases of nephrotic syndrome. methods: in a cross-sectional study, from march 2010 to march 2012, thyroid function tests were performed...

background asthma is a chronic inflammatory disease in respiratory system and obesity is another inflammatory disease which incidence rate is increasing. although, many studies have been conducted on severity of asthma and its relationship with obesity, but different results have been obtained. this study aimed to determine a relationship between asthma severity, body mass index (bmi) and pulmo...

aim and back ground: impulsivity and risky decision making is a core element of plenty of individual and social deficits. on the other hand, history of attention deficit disorder and hyperactivity has been reported in many people with these problem particularly addiction. decision making requires basic cognition function such as inhibition, working memory and attention. the aim of the current s...

conclusions abnormal transaminases and uric acid levels are seen in ahf patients. increased ast levels may be a predictor of the need for inotrope during hospital course in these patients. patients and methods a total of 100 patients (aged 16 - 90 years, 60% men) admitted with ahf were enrolled. lfts and uric acid levels were assessed on first day and before discharge, and patients were followe...

many findings point to the presence of a close relationship between the immune, endocrine and neurologic systems. for example the suppressive effects of β-human chorionic gonadotropin (β-hcg) on il-l production, the potentiative effect of enkephalins on lymphocyte functions and the suppressive effect of leuteinizing hormone (lh) on natural killer (nk) cell activities have been clearly establish...

the effects of dietary nucleotide (nt) were evaluated on some serum biochemical parameters and acute stress responses of the catfish (pangasianodon hypophthalmus). five experimental diets including 0, 0.25, 0.5, 0.75, and 1% nt were supplied to catfish fry for 10 weeks. at the end of the experiment, fish fed the control and 1% nt diets were subjected to handling and crowding stress. the results...