the total concentration and percentage of heavy metals content in the sediment of hashilan wetland, kermanshah province, was assessed in summer 2015. the total concentrations of cu, pb, and fe were around 18.57, 6.95 and 379.24 μg g-1, respectively. successive extractions of the samples showed a decreasing trend as follows: residual>organic matter>iron and manganese oxides>exchangeable parts. t...

The photospheric emission of a white dwarf (WD) is not expected to be detectable in hard X-rays or the mid-IR. Hard X-ray (∼1 keV) emission associated with a WD is usually attributed to a binary companion; however, emission at 1 keV has been detected from three WDs without companions: KPD 0005+5106, PG 1159, and WD 2226−210. The origin of their hard X-ray emission is unknown, although it has be...

Background: Iron, manganese, and aluminum are three abundant metals on earth and their concentrations have increased in aquatic environments as a result of natural and industrial activities. This study was undertaken to report the median acute toxicity (LC50) and accumulation of the sub-lethal concentration (10% 96-h LC50) of iron (Fe), manganese (Mn) and aluminum (Al) in kutum (Rutilus kutum) ...

PURPOSE To verify the hypothesis that protein concentrations, such as lactoferrin, epidermal growth factor (EGF), and aquaporin 5 (AQP5), in tears are abnormal in patients with dry eye. DESIGN Prospective case-control study. METHODS One hundred three dry eye patients were divided into three groups: dry eye not associated with the Sjögren syndrome (non-SS; n = 71), Sjögren syndrome (SS; n = ...

Adaptation to hypoxia is critical for survival and regulates multiple processes, including erythropoiesis and vasculogenesis. Chuvash polycythemia is a hypoxiasensing disorder characterized by homozygous mutation (598C>T) of von Hippel-Lindau gene (VHL), a negative regulator of hypoxia sensing. Although endemic to the Chuvash population of Russia, this mutation occurs worldwide and originates f...

the purposes of this research have been to determine the wastewater quality of a typical railroad repair workshop and to find a way to reduce the concentrations of present contaminants especially oil and grease. the mean concentrations of oil, cod and ss in the wastewater studied were 287.69, 775.85 and 28723, respectively with average daily discharge to be 30-35 m3. three successive treatment ...

The present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in Ghana. Heavy metal concentrations in all samples were generally within the WHO safe limits with the average activity concentrations of 238U, 232Th, and 40K in water being respectively 0.42±0...

the activity concentrations of 235u, 232th, 226ra, 40k and 137cs in ground and surface of drinking water resources in iranian city of arak were determined by gamma ray spectrometry with ahpge detector setup, coaxial p type and 8192 channels mca. the water samples differed in radioactivity content depending on their origin and place. in the drinking water samples from aman abad, mobarak abad, an...

K E Y W O R D S nanotechnology, regulation, risk, ethical issues DOI: 10.1515/emj-2016-0005 Corresponding author: Agnieszka Baran Bialystok University of Technology Faculty of Management e-mail: [email protected] received: 19 January, 2016 accepted: 29 February, 2016

background and objectives : the efficacy of mentha piperita l, zataria multiflora boiss and thymus vulgaris l essential oils (eos) was evaluated for controlling the growth of phytophthora drechsleri, the causative agent of damage to many crops that is consumed directly by humans. materials and methods : the eos used in this study was purchased from magnolia co, iran. the pour plate method in pe...