Mineral-targeting

Thus use of sulfate and nitrate is effective at detecting the presence of sulfides. Other indices, consistent with the model for groundwater evolution around weathering sulfides, delineate the sulfide signature independent of the type of water i.e. varied Eh and pH. The better performing indices for mineralization targeting are ... 

Thirty-two soil samples on a N-S traverse were collected from the brunisolic B-horizon (20 cm average depth) in May, 2008 over the drill-defined Northeast Zone of the Gay s River carbonate hosted massive sulfide (CHMS) Zn-Pb deposit, Stewiacke, Nova Scotia. This mineral target is buried by up to 10 m of exotic till and c. 10 m of gypsum, and so represents an ideal location to evaluate the exploration performance levels of partial digestions designed to extract labile elements from soil particle surfaces. 

MARCOR Environmental, Inc. s, Advanced Chemical Treatment (ACT) is a chemical fixation method for the treatment of contaminated soils, sediments, and sludges. The vendor claims that by mixing contaminated materials with ACT reagents, the contaminants are oxidized, catalyzed, and mineralized. Target contaminants may include coal tar wastes polycyclic aromatic hydrocarbons (PAHs) benzene, toluene, ethylbenzene, and xylenes (BTEX) chromium copper and lead. 

ThSiO "Th and Th are present in naturally occurring uranium Th and Th occur in uranium minerals as members of the decay chain. The remaining isotopes are formed upon neutron bombardment of those isotopes discussed, or by charged particle bombardment of various targets. 

Flotation reagents are selected to produce a stable froth and adjust the affinity of target minerals to collect in the froth. Other reagents depress the collection of minerals in the froth. The froth containing the copper minerals overflows into collection launders. 

Garrison, G. W., Cooley, B. L., and El-Halwagi, M. M. (1995). Synthesis of mass exchange networks with multiple target mass separating agents. Dev. Chem. Eng. Miner. Proc. 3(1), 31-19. 

As the materials used in drilling processes are produced from depletable mineral resources, there is a continuous upward trend of cost with time. The field engineer must make a detailed cost comparison of materials available within the target cost of the project. The final choice may be a tradeoff between cost and performance. This is because the choice may narrow down to two or more materials with different initial costs and different expected service lives. Transportation costs of selected materials must also be included in the final cost. 

The apparatus has also been made into an x-ray emission electron-microprobe (9.9) by replacing the target with a transparent section of a rock or mineral sample. The spot being excited could be located easily by viewing it through the sample with an optical microscope. 

It has been shown that in postmenopausal women habitually high intakes of dietary isoflavones are associated with higher bone mineral density (BMD) values at both the spine and hip region (Mei et al, 2001). It is conceivable that an isoflavone-rich diet may help to reverse the state of secondary hyperparathyroidism associated with estrogen withdrawal and hence lower the rate of bone turnover in postmenopausal women, thus reducing the risk of osteoporosis (Valtuena et al, 2003). Phytoestrogens could be used as natural SERMs (Brzezinski and Debi, 1999) and some studies (Setchell, 2001 and refs therein) support such an idea since the molecular targets of... 

The available data did not adequately identify target organs or effects. In acute lethality studies in rats gavaged with 5,000 mg/kg doses of the water-in-oil emulsion hydraulic fluids or mineral oil hydraulic fluids, no deaths or body weight changes occurred. One of these fluids was tested for neurotoxicity in chickens without effects. 

Two studies on intermediate-duration exposure to mineral oil hydraulic fluids are available a single oral exposure rat study to MIL-H-5606 (Mattie et al. 1993), and an inhalation-exposure study in rats to Houghto-Safe 5047F (Kinkead et el. 1991). Because no other intermediate-duration studies were located, no inhalation or oral intermediate MRLs were derived. Inhalation, oral, and dermal systemic toxicity studies examining a number of end points would be useful in identifying the targets of toxicity of mineral oil hydraulic fluids. 

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