Results 21 to 30 of about 8,465 (222)

Thermodynamic Considerations on Gold Dissolution in Different Lixiviants (II)

Revista de Chimie, 2019
The paper presents the main thermodynamic aspects related to the gold dissolution with thiosulphate, thiourea and thiocyanate. The thermodynamic stability of the gold complexes and the reaction mechanisms that ensure the gold dissolution in the most representative lixiviants with potential for use in the gold industry are analyzed. The performances of
Catalin Alexandru Barbu, Ion Constantin, Mihnea Cosmin Costoiu, Mihai Buzatu, Augustin Semenescu   +4 more
openaire   +2 more sources

Cobre e zinco no material percolado e no solo com a aplicação de água residuaria de suinocultura em solo cultivado com soja Copper and zinc in the lixiviated material and in the soil application of swine wastewater on soil cultivated with soybean

Engenharia Agrícola, 2010
O objetivo deste trabalho foi avaliar possíveis efeitos da aplicação de taxas de água residuária de suinocultura (ARS), quanto às concentrações de cobre e zinco, tanto no solo quanto na água percolada de lisímetros de drenagem, durante o ciclo da cultura
Adriana Smanhotto, Antônio de P Sousa, Silvio C Sampaio, Lúcia H. P Nóbrega, Maritane Prior   +4 more
doaj   +1 more source

PRECIPITATION EFFECTS ON SOIL CHARACTERISTICS IN TROPICAL RAIN FORESTS OF THE CHOCO BIOGEOGRAPHICAL REGION

Revista Facultad Nacional de Agronomía Medellín, 2016
Average annual precipitation (AAP) is one of the principal environmental factors that regulates processes in terrestrial ecosystems. The effect of AAP on the availability of edaphic nutrients is poorly understood, especially in tropical zones with high ...
Harley Quinto Mosquera, Flavio Moreno Hurtado   +1 more
doaj   +1 more source

Removal efficiency of 137Cs from radioactively contaminated electric arc furnace dust using different solvents

Case Studies in Chemical and Environmental Engineering, 2023
An advertent meltdown of radioactive source during steel smelting generates electric arc furnace dust (EAFD) polluted with 137Cs. The removal efficiency of 137Cs from EAFD was assessed by the lixiviation method using different solvents and at various ...
T. Akharawutchayanon, P. Sopapan, S. Yotthuan, P. Gunhakoon, K. Yubonmhat, S. Issarapanacheewin, W. Katekaew, N. Prasertchiewchan   +7 more
doaj   +1 more source

Biodétérioration d'une matrice cimentaire par les champignons : influence du vieillissement accéléré sur le développement fongique // Biodeterioration of cementeous matrix by fungi: Influence of accelerated weathering on fungal development. [PDF]

, 2006
National audienceLes micro-organismes ont la capacité de se développer sur les matériaux de construction et sont susceptibles de dégrader les fonctions des matériaux, d'abréger leur durée de vie et d'en modifier l'aspect esthétique.
Garcia-Diaz, Eric, Grosseau, Philippe, Guyonnet, René, Wiktor, Virginie   +3 more
core   +2 more sources

Glass-(nAg, nCu) biocide coatings on ceramic oxide substrates. [PDF]

PLoS ONE, 2012
The present work was focused on obtaining biocide coatings constituted by a glassy soda-lime matrix containing silver or copper nanoparticles on ceramic (alumina and zirconia based) substrates.
Leticia Esteban-Tejeda, Francisco Malpartida, Luis Antonio Díaz, Ramón Torrecillas, Fernando Rojo, José Serafín Moya   +5 more
doaj   +1 more source

Chlorophylls and β-carotene in Spirulina platensis Dietary Supplements: Nano Liquid Chromatography Versus Diffuse Reflectance Spectroscopy for Establishing Composition, Quality Control, and Comparison of Commercial Products. [PDF]

J Sep Sci
ABSTRACT Spirulina is considered a superfood due to its chlorophylls. Two new methods for the determination of chlorophylls and β‐carotene were developed here, one based on in‐tube solid‐phase microextraction (IT‐SPME) coupled online to nanoliquid chromatography (nanoLC) with diode array detection (DAD), and the other on ultraviolet‐visible diffuse ...
Soto C, Herráez-Hernández R, Campíns-Falcó P.   +2 more
europepmc   +2 more sources

Parameters of Transportation of Tailings of Metals Lixiviating [PDF]

E3S Web of Conferences, 2017
The article shows that the change in the situation in the metals market with a steady increase in production volumes is intensified against the tendency of the transition of mining production from underground mining to underground mining for a certain group of ores.
Golik Vladimir, Dmitrak Yury
openaire   +2 more sources

Adaptation des pratiques agricoles en fonction des exigences de la Directive Nitrates et validation des résultats via le suivi lysimétrique de la lixiviation de l'azote nitrique [PDF]

Biotechnologie, Agronomie, Société et Environnement, 2010
Adaptation of agricultural practices according to requirements of the Nitrates Directive and validation through nitrates leaching follow up thanks to lysimeters.
Deneufbourg M., Vandenberghe C., Heens B., Bernaerdt R., Fonder N., Xanthoulis D., Marcoen JM.   +6 more
doaj  

Cellulose acetate as solid phase in ELISA for plague [PDF]

Memorias do Instituto Oswaldo Cruz, 2000
Antigen from Yersinia pestis was adsorbed on cellulose acetate discs (0.5 cm of diameter) which were obtained from dialysis membrane by using a paper punch.
AD Barbosa, FSM de Barros, EQ Callou, AMP Almeida, AM Araujo, WM Azevedo, LB Carvalho Jr   +6 more
doaj   +1 more source