نتایج جستجو برای: old iron mining
تعداد نتایج: 583104 فیلتر نتایج به سال:
In the study, using panel data analysis, relationship between GDP and global iron, cotton, oil, copper prices were analyzed under impoverishing growth hypothesis. The countries in this study are developing such as China, Chile, Czechia, Greece, Hungary, India, South Korea, Malaysia, Pakistan, Peru, Philippines, Poland, Thailand, Turkey. covers period 2003-2018. analysis results show that increa...
We report the case of a 54-year-old man who presented with symptoms of idiopathic hemochromatosis, an inherited disorder involving regulation of iron absorption. These symptoms usually do not appear until total body iron content reaches 15 g, about threefold normal. Therapy involves mobilization and removal of excess stored iron through weekly or twice-weekly phlebotomies of 500 mL, until the h...
the aim of this study was to determine the extent of metal pollutions and the identification of their major sources in the vicinity of the sangan iron mine occurring in ne iran. soil samples were collected from the vicinity of the mine site and analyzed for heavy metals. in addition, the chemical speciation of these metals was investigated by means of the sequential extraction procedure. the st...
thirteen environmental elements were distinguished in the livers of various species of fish thathave been sampled from 15 sites in a restricted area of the khorramabad river basin in lorestan province(west of iran). sites sampled represented agricultural, mining, mixed, and urban/recreation land uses andbackground conditions. lithium and silver were not detected at any of the sites. the minimum...
Mining processes in the iron ore mine of Boukhadra, Tebessa (NE Algeria) generated thousands tons mining wastes every year, which represents a real threat to environment, leading hazardous effects for resident population region. The aim this study is selective sorting Boukhadra valorization. This will facilitate recycling mineral substances (limestone, iron, marls) on one hand and it makes poss...
Fine/micron-sized iron oxide particulates are incidentally released from a number of industrial processes, including iron ore mining, steel processing, welding, and pyrite production. Some research suggests that occupational exposure to these particulates is linked to an increased risk of adverse respiratory outcomes, whereas other studies suggest that iron oxide is biologically benign. Iron ox...
Mining-impacted sediments of Lake Coeur d'Alene, Idaho, contain more than 10% metals on a dry weight basis, approximately 80% of which is iron. Since iron (hydr)oxides adsorb toxic, ore-associated elements, such as arsenic, iron (hydr)oxide reduction may in part control the mobility and bioavailability of these elements. Geochemical and microbiological data were collected to examine the ecologi...
OBJECTIVE To determine whether utilization of iron from infant cereal and pureed meat was sufficient to prevent iron depletion and/or anaemia in infants 6 to 12 months old fed whole cow milk (WCM) as their primary milk source. DESIGN Six-month-old infants were randomized into a treatment group (n = 43) receiving iron-fortified infant cereal (10.2 mg iron), pureed meat (0.75-1.7 mg iron) and W...
Iron deficiency (ID) affects 13.5% of 1-2 years old children in the US and may have a negative impact on neurodevelopment and behavior. Iron-fortified infant cereal is the primary non-heme iron source among infants aged 6-11.9 months. The objective of this study was to compare iron intakes of infant cereal users with non-users. Data from the Feeding Infants and Toddlers Study 2008 were used for...
Background: The "Iron Supplementation Project" for anemic toddlers in Iran has not been subject to scientific studies yet. Since daily consumption of iron drops by children could bring about physical and mental problems, the aim of this study was to determine whether weekly doses of iron drops would also improve the iron status of children significantly. Materials and Methods: We determined the...
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