Results 1 to 10 of about 3,411,807 (404)

Mineral Exploration Funds [PDF]

open access: yes, 1968
While independent mineral operators have traditionally been confronted with a scarcity of risk capital for mineral development, willing investors have often experienced equal difficulty in locating responsible mineral operations in which to invest.
Bloomenthal, Harold S.
core   +2 more sources

Pyrite oxidation under initially neutral pH conditions and in the presence of Acidithiobacillus ferrooxidans and micromolar hydrogen peroxide [PDF]

open access: yes, 2012
Hydrogen peroxide (H2O2) at a micromolar level played a role in the microbial surface oxidation of pyrite crystals under initially neutral pH. When the mineral-bacteria system was cyclically exposed to 50 μM H2O2, the colonization of Acidithiobacillus ...
Lin, C., Ma, Y.
core   +1 more source

Characterization of Fulvic Acid Beverages by Mineral Profile and Antioxidant Capacity

open access: yesFoods, 2019
The main purpose of the study was to investigate the quality of fulvic acid-based food products. The concentrations of Ca, K, Mg, Na, Cu, Fe, Mn, and Zn, and antioxidant capacities of fulvic acid concentrates and ready-to drink beverages available on the
Monika Swat   +2 more
doaj   +1 more source

Effect of parathyroid hormone (1-34) on fractures and bone mineral density in postmenopausal women with osteoporosis.

open access: yesNew England Journal of Medicine, 2001
BACKGROUND Once-daily injections of parathyroid hormone or its amino-terminal fragments increase bone formation and bone mass without causing hypercalcemia, but their effects on fractures are unknown.
R. Neer   +11 more
semanticscholar   +1 more source

Consumo e absorção aparente total de macroelementos inorgânicos (Ca, P, Mg, K e Na), em bezerros da raça holandesa alimentados com dietas contendo diferentes níveis de volumoso

open access: yesRevista Brasileira de Zootecnia, 1999
Este estudo visou avaliar os efeitos dos diferentes níveis de volumoso nas dietas sobre os consumos e as absorções aparentes de cálcio (Ca), fósforo (P), magnésio (Mg), potássio (K) e sódio (Na).
Ricardo Dias Signoretti   +7 more
doaj   +1 more source

Sodium Requirement for Muscovy Ducks in Housing [PDF]

open access: yesBrazilian Journal of Poultry Science, 2020
The present study aimed to determine the ideal sodium levels for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum.
ANA Santos   +5 more
doaj   +1 more source

Disponibilidade aparente do fósforo em alimentos vegetais e suplementação da enzima fitase para tilápia-do-nilo Apparent phosphorus availability in vegetable feedstuffs and supplementation of phytase enzyme for Nile tilapia Oreochromis niloticus

open access: yesRevista Brasileira de Zootecnia, 2007
Este estudo foi realizado com o objetivo de avaliar o efeito da fitase (0, 1.000 e 2.000 uf/kg) na disponibilidade aparente de P de cinco alimentos energéticos (milho, milho extrusado, farelo de trigo, farelo de arroz e sorgo baixo tanino) e cinco ...
Giovani Sampaio Gonçalves   +3 more
doaj   +1 more source

Dietary supplementation of chromium for finishing pigs [PDF]

open access: yesCiência Rural, 2021
: Increasing fat deposition and feed conversion ratio over the days in finishing phase directly influence pork quality and productive profitability. Nonetheless, the slaughter of heavier pigs can result in benefits for the slaughterhouse due to dilution ...
Dante Teixeira Valente Júnior   +9 more
doaj   +1 more source

Dietary levels of potassium for broiler chickens

open access: yesBrazilian Journal of Poultry Science, 2005
Three experiments were conducted to determine the nutritional requirements of potassium (K) for male Ross broiler chickens, from 8 to 21, 22 to 42 and 43 to 53 days of age. The following parameters were evaluated: body weight gain (BWG), feed intake (FI)
JE Oliveira   +4 more
doaj   +1 more source

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