Results 11 to 20 of about 62,936 (308)

Organic Compounds, Radiocarbon, Trace Elements and Atmospheric Transport Illuminating Sources of Elemental Carbon in a 300‐Year Svalbard Ice Core [PDF]

open access: yes, 2023
Black carbon (BC) particles produced by incomplete combustion of biomass and fossil fuels warm the atmosphere and decrease the reflectivity of snow and ice, hastening their melt.
Liu, X   +44 more
core   +1 more source

Mesolithic Human Bones from the Upper Volga Basin: Radiocarbon and Trace Elements [PDF]

open access: yes, 2009
Human bones from 3 Mesolithic sites in the Upper Volga basin were analyzed for trace elements, and dated by accelerator mass spectrometry (AMS). The radiocarbon dates of the bones correspond to the Mesolithic era.
Alexandrovskaya, E.I.,   +7 more
core   +1 more source

The Influence of Trace Elements on the Metabolism of Aromatic Compounds by Soil Fungi [PDF]

open access: yesJournal of General Microbiology, 1960
SUMMARY: The effect of copper, iron, manganese and zinc on the metabolism of catechol, o-,m- and p-hydroxybenzoic, o-, m- and p-methoxybenzoic, 3:4-dimethoxybenzoic and vanillic acids was investigated. Aspergillus niger, Hormodendrum sp. and Penicillium sp. mycelia which were deficient in the various trace elements were the organisms used.
openaire   +2 more sources

Scientific Opinion on the safety and efficacy of zinc compounds (E6) as feed additives for all animal species (zinc acetate, dihydrate; zinc chloride, anhydrous; zinc oxide; zinc sulphate, heptahydrate; zinc sulphate, monohydrate; zinc chelate of amino acids, hydrate; zinc chelate of glycine, hydrate), based on a dossier submitted by FEFANA asbl

open access: yesEFSA Journal, 2015
The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) has assessed seven zinc compounds in the current application: zinc acetate, dihydrate; zinc chloride, anhydrous; zinc oxide; zinc sulphate, heptahydrate; zinc sulphate ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Scientific Opinion on the safety and efficacy of L-selenomethionine as feed additive for all animal species [PDF]

open access: yesEFSA Journal, 2013
Selenium is a trace element that is essential for vertebrates and involved in series of vital metabolic functions. Considering the purity of the L-selenomethionine (L-SeMet) under application and the metabolic pathways of SeMet, the FEEDAP Panel ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Safety and efficacy of manganese compounds (E5) as feed additives for all animal species: manganous carbonate; manganous chloride, tetrahydrate; manganous oxide; manganous sulphate, monohydrate; manganese chelate of amino acids, hydrate; manganese chelate of glycine, hydrate, based on a dossier submitted by FEFANA asbl

open access: yesEFSA Journal, 2016
The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) has assessed five manganese compounds: manganous chloride, tetrahydrate; manganous sulphate, monohydrate; manganous oxide; manganese chelate of amino acids, hydrate; manganese
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Scientific Opinion on the safety and efficacy of manganese compounds (E5) as feed additives for all animal species: manganous oxide, based on a dossier submitted by Poortershaven Industriële Mineralen B.V. [PDF]

open access: yesEFSA Journal, 2013
Manganese, an essential trace element, functions as an enzyme activator and is a constituent of several enzymes. Primary signs of manganese deficiency are impaired growth, skeletal abnormalities, depressed reproductive function, ataxia of the newborn and
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Scientific Opinion on the safety and efficacy of copper compounds (E4) as feed additives for all animal species (cupric acetate, monohydrate; basic cupric carbonate, monohydrate; cupric chloride, dihydrate; cupric oxide; cupric sulphate, pentahydrate; cupric chelate of amino acids, hydrate; cupric chelate of glycine, hydrate), based on a dossier submitted by FEFANA asbl

open access: yesEFSA Journal, 2015
The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) has assessed seven copper compounds in the current application: cupric acetate, monohydrate; basic cupric carbonate, monohydrate; cupric chloride, dihydrate; cupric oxide ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Assessing the Physicochemical Stability of a Compounded Neonatal Trace Element Solution

open access: yesJournal of Pharmacy & Pharmaceutical Sciences, 2018
PURPOSE: Alberta Health Services (AHS) recommends the adoption of a new neonatal multi-trace element formulation containing zinc sulfate, copper sulfate, selenious acid and sodium iodide to be compounded internally in appropriate AHS pharmacies. The objective of this study was to assess the physicochemical stability of this formulation under commonly ...
Forugh Sanaee   +5 more
openaire   +4 more sources

Safety and efficacy of iron compounds (E1) as feed additives for all animal species: ferrous carbonate; ferric chloride, hexahydrate; ferrous fumarate; ferrous sulphate, heptahydrate; ferrous sulphate, monohydrate; ferrous chelate of amino acids, hydrate; ferrous chelate of glycine, hydrate, based on a dossier submitted by FEFANA asbl

open access: yesEFSA Journal, 2016
The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) has assessed seven iron compounds: ferrous carbonate, ferric chloride, hexahydrate, ferrous fumarate, ferrous sulphate, heptahydrate, ferrous sulphate, monohydrate, ferrous ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

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