Repeated application of manures to agricultural soils could cause the accumulation of phosphorus (P) in soils. However, it is unclear if manure P can behave similar to P in soluble fertilizers in accumulation Olsen-P (0.5 mol L-1 NaHCO3 at pH 8.5) in soils. A long-term wheat-maize rotation experiment was conducted to investigate the effects of repeated application of manures on P accumulation i...

Objective(s): Long-term, irregular endurance exercise may result in disturbance to the angiogenesis of heart muscles and blood supply. The aim of the present study is to evaluate the effects of mid- and long-term endurance exercise on the process of angiogenesis.Materials and Methods: Eighteen male Wister rats of 220±10 g, were randomly assigned to three groups of 6 rats including: Control, Mid...

the long-term efficacy of written grammar feedback (wgf) has escaped rigorous empirical investigation, partly due to its strong intuitive appeal. the few studies that have investigated the long-term effect of grammar correction have failed to find any positive long-term effects for wgf (truscott, 2007). nevertheless, a number of recent studies have reported a positive effect for wgf. the presen...

  Background :Preterm birth is a significant global health problem with serious short- and long-term consequences. This study examined the long term effects of preterm birth on vestibular evoked myogenic potentials (VEMPs) among preschool-aged children.   Methods : Thirty-one children with preterm and 20 children with term birth histories aged 5.5 to 6.5 years were studied. Each child underwent...

background: hydrogen sulfide (h 2 s) exhibits both physiological and toxicological roles in the biological systems. acute exposure to high levels of h 2 s is life threatening while long-term exposure to ambient levels of h 2 s elicits human health effects. objective: to study the harmful effects of long-term exposure to low levels of h 2 s on human blood cells. methods: 110 adult workers from i...

Introduction: The effects of cannabinoids (CBs) on synaptic plasticity of hippocampal dentate gyrus neurons have been shown in numerous studies. However, the effect of repeated exposure to cannabinoids on hippocampal function is not fully understood. In this study, using field potential recording, we investigated the effect of repeated administration of the nonselective CB receptor agonist WIN5...

we aimed to evaluate clinical, high resolution computed tomography (hrct) and pulmonary function test (pft) findings after 18-23 years of exposure in veterans of sulphur mustard (sm) exposure. we performed a cross-sectional study of 106 patients. inclusion criteria were 1: documented exposure to sm as confirmed by toxicological analysis of their urine and vesicular fluid after exposure 2: singl...