نتایج جستجو برای: concentrations of mn

تعداد نتایج: 21177999  

Journal: :Andrologia 2023

The present study is aimed at investigating the usefulness of pulsed-wave Doppler ultrasonography for characterization testicular blood flow in buffaloes during nonbreeding and breeding seasons. Ten Egyptian buffalo bulls were evaluated changes (Doppler’s indices: resistive index (RI) pulsatility (PI)) levels supratesticular (STA) (winter) season (summer). alterations parenchyma echotexture (pi...

A.A. Mehrdad Sharif H. Bakhtiari N. Assi Q. S. Manuchehri Naeini

ZnO and Mn-ZnO nano powders were prepared by the sol-gel auto combustion method. The products were characterized by X-ray diffraction (XRD), energy dispersive analysis of X-ray (EDX) and scanning electron microscopy (SEM). Structural and morphological properties of nano particles were investigated and the average crystalline size of ZnO and Mn-doped ZnO was obtained 44 and 51 nm, respectively. ...

Journal: :Nihon eiseigaku zasshi. Japanese journal of hygiene 1987
T Tsukamoto N Koizumi R Ninomiya

Pregnant and nursing rats were given water containing 1,000ppm manganese (MnCl2 was used) ad libitum and the transfer of Mn to fetuses and sucklings was investigated. Administration of Mn during the first half of the gestation period before placentation produced no difference in Mn concentration in embryos, including chorions, from the control group. However, when Mn was administered during the...

A.A. Mehrdad Sharif H. Bakhtiari N. Assi Q. S. Manuchehri Naeini

ZnO and Mn-ZnO nano powders were prepared by the sol-gel auto combustion method. The products were characterized by X-ray diffraction (XRD), energy dispersive analysis of X-ray (EDX) and scanning electron microscopy (SEM). Structural and morphological properties of nano particles were investigated and the average crystalline size of ZnO and Mn-doped ZnO was obtained 44 and 51 nm, respectively. ...

2016
Hamid HASSANI Farideh GOLBABAEI Hamid SHIRKHANLOO Mehdi TEHRANI-DOUST

The objective of present study was to assess relationship between biomarkers of Manganese (Mn) and neuropsychological effects. The study was carried out on 27 welders and 31 ferroalloy smelters as Mn-exposed groups and 30 office workers as unexposed controls. Air Mn concentrations were determined according to NIOSH method 7300. The biological samples were prepared using microwave assisted acid ...

Journal: :international journal of environmental research 2010
p. razos a. christides

in the industrial area of elefsis, greece, aerosol samples from the atmosphere were collected using a stacked filter unit sampler, which separates the airborne particulate matter into coarse (pm2.5-10) and fine (pm2.5) size fractions. the samples collected during the period january 2005 to march 2006, were analyzed by anodic stripping voltammetry (asv) and inductively coupled plasma atomic emis...

Journal: :The Science of the total environment 2010
Sally C Homoncik Alan M Macdonald Kate V Heal Brighid E O Dochartaigh Bryne T Ngwenya

Groundwater is increasingly being used for public and private water supplies in Scotland, but there is growing evidence that manganese (Mn) concentrations in many groundwater supplies exceed the national drinking water limit of 0.05 mg l(-1). This study examines the extent and magnitude of high Mn concentrations in groundwater in Scotland and investigates the factors controlling Mn concentratio...

Journal: :international journal of environmental research 2013
m. długaszek k. kopczyński

in the paper, the contents of calcium (ca), magnesium (mg), zinc (zn), copper (cu), iron (fe),manganese (mn), chromium (cr), lead (pb), cadmium (cd), aluminium (al), and nickel (ni) were determinedin the meat of roe deers, wild boars, and hares coming from central region of poland. measurements werecarried out using atomic absorption spectrometry. the ranges of median values found for the conce...

Journal: :international journal of environmental research 0
m. długaszek military university of technology, institute of optoelectronics, 00-908 warsaw, gen. sylwestra kaliskiego 2 str., poland k. kopczyński military university of technology, institute of optoelectronics, 00-908 warsaw, gen. sylwestra kaliskiego 2 str., poland

in the paper, the contents of calcium (ca), magnesium (mg), zinc (zn), copper (cu), iron (fe),manganese (mn), chromium (cr), lead (pb), cadmium (cd), aluminium (al), and nickel (ni) were determinedin the meat of roe deers, wild boars, and hares coming from central region of poland. measurements werecarried out using atomic absorption spectrometry. the ranges of median values found for the conce...

Journal: :international journal of environmental research 2010
d. adjei-boateng k.a. obirikorang s. amisah

the concentrations of heavy metals, mn, zn, fe and hg were determined in sediments and in the whole soft tissue of the clam galatea paradoxa from two clam fishing locations, ada and aveglo at the volta estuary in ghana from march to september 2008. thirty clams were obtained from each sampling location monthly and grouped into three size classes of 10 individuals each based on shell lengths as ...

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