نتایج جستجو برای: industrial minerals

تعداد نتایج: 168702  

Journal: :international journal of health studies 0
jaber yeganeh1 1. dept. of nursing, school of nursing & health, urmia university of medical sciences, urmia, iran saeid nazemi2* 2. dept. of environmental health engineering, school of public health, shahroud university of medical sciences, shahroud, iran. ardeshir yousefzadeh3 3. dept. of map and gis, governor general of west azarbaijan, head of, urmia, iran.

background : the present paper aims to study the effect of human and urban activities on the quality of groundwater within the city of khoy in terms of heavy metals, chemical salts, and minerals from the geological formations of this region. methods : samples were provided from 32 pumping wells and the concentration of heavy metals ( cd, cu, mn, pb, zn, fe, as, and b), the main ions (hco 3 ,so ...

Journal: :Environmental Health Perspectives 1983
G H Pigott P J Pinto

The use of the V79-4 system as a primary screen for fiber carcinogenicity is dependent on the observed correlation between cytotoxicity of the test material in the system and mesothelioma following intrapleural injection in animals. This correlation has been established for relatively pure samples of fibrous minerals. The wider application of the system as a screen for industrial dusts may depe...

2015
Guiomar Calvo Alicia Valero Luis Gabriel Carmona

Intensified mineral consumption and reserve depletion means that it is becoming increasingly important for policymakers to account for and manage national mineral capital. Exergy replacement costs (ERC), an indicator based on the second law of thermodynamics, provides a physical value of mineral loss. When only a unit mass analysis is used, the role of scarcer minerals, such as gold, is obscure...

2017
Nita Sahai Hussein Kaddour Punam Dalai Ziqiu Wang Garrett Bass Min Gao

The self-assembly of lipid bilayer membranes to enclose functional biomolecules, thus defining a "protocell," was a seminal moment in the emergence of life on Earth and likely occurred at the micro-environment of the mineral-water interface. Mineral-lipid interactions are also relevant in biomedical, industrial and technological processes. Yet, no structure-activity relationships (SARs) have be...

2012
Solange I. Mussatto Lina F. Ballesteros Silvia Martins José A. Teixeira

Large amount of wastes is generated every year from the industrial processing of agricultural raw materials. Most of these wastes are used as animal feed or burned as alternative for elimination. However, such wastes usually have a composition rich in sugars, minerals and proteins, and therefore, they should not be considered “wastes” but raw materials for other industrial processes. The presen...

2012
Sumit Roy

(a) in the short term, Africa should use its increased income from ‘booms’ in ‘traditional’ exports (eg, commodities and minerals) to invest in basic needs and infrastructure, and enhance its industrial and technological capacity. This can safeguard Africa from fluctuations in prices and demand in the world market for ‘traditional’ exports, while helping to build its economic capacity and take ...

Journal: :Arabian Journal of Geosciences 2022

Heavy minerals (HMs) are used in many high-tech applications (e.g. nuclear reactors, photovoltaic cells, electronics, green, and nano- space technology), thus global demand is increasing day by day. This review article focused on the distribution, genesis, economic geology, exploration exploitation, (i.e. past, present, future status of annual production, consumption, price), (geological indust...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان 1388

copper extraction from heap 3 low grade ore at sarchechmeh is limited due to its mixed composition (copper oxide and sulphide minerals). changing this heap to a bioheap could improve the copper recovery.

2016
T. Suganya S. Senthilkumar K. Deepa J. Muralidharan P. Sasikumar N. Muthusamy

At high levels all mineral elements can produce adverse effects in animals. Thus, the essential minerals must be provided in the diet at concentrations sufficient optimum response and the dietary intake of other minerals must be low enough to provide complete safety for both the animals and also the human population which will consume the meat and eggs. Dietary maximum tolerable levels have bee...

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