Results 81 to 90 of about 666,855 (310)

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Sensitivity bioassays of the Cnesterodon decemmaculatus and Pimephales promelasin a series of samples of effluent and reference toxicant

Innotec, 2015
This study compared the toxicological sensitivity quantified by the 50% lethal dose of acute toxicity bioassays of Cnesterodon decemmaculatusand Pimephales promelasin benchmark exposure to toxic industrial effluents, wastewater effluents and reference ...
Gustavo Saona, Agustín Carnikian, Martín Spósito, Patricia Baklayan, Julio Espínola   +4 more
doaj  

Auditoría ambiental: nuevos caminos en el control externo. [PDF]

El Estado, así como la sociedad, viene sufriendo diversas alteraciones. Consciente de estos cambios la auditoria gubernamental también pasa por un proceso de transformación.
Varela Silva, Marta
core  

Regulación Ambiental del Estado en casos de contaminación masiva por empresas carboníferas en Colombia [PDF]

, 2017
Artículo de reflexiónLa protección del derecho a un medio ambiente sano contemplado dentro de la Constitución Política de 1991 es un deber que corresponde tanto al Estado como a cada uno de los ciudadanos. El Estado en su papel de garante ejerce diversas
Avellaneda-López, Leydi Johanna
core  

Environmental Costs of Government-Sponsored Agrarian Settlements in Brazilian Amazonia [PDF]

, 2015
Brazil has presided over the most comprehensive agrarian reform frontier colonization program on Earth, in which ~1.2 million settlers have been translocated by successive governments since the 1970's, mostly into forested hinterlands of Brazilian ...
A Brandão Jr, A Lima, AAB Marques, AKO Homma, APD Aguiar, ASL Rodrigues, C Simmons, CA Peres, Carlos A. Peres, CR Townsend, D Celentano, D Ezzine-de-Blas, E Salati, F Eiró, F Michalski, FM Tourneau, G Sparovek, G Sparovek, IMD Rosa, IMD Rosa, J Alves, J Capiberibe, J Godar, JA Steeg, JH Zar, JL Fleiss, JP Metzger, JR Eastman, Jr SM Borras, K Deininger, K Schmidt-Soltau, KR Kirby, M Batistella, Maurício Schneider, MLV Castilho, MM Caldas, MM Caldas, MMC Ribeiro, O Evrard, P Pacheco, PE Barni, PM Fearnside, PM Fearnside, R Pasquis, RL Prosterman, RR Monteiro, RunGuo Zang, SK Wegren, SP Aldrich, T Ludewigs, TK Rudel, VPMA Marques, W Wolmer, WF Laurance, WS Assis   +54 more
core   +2 more sources

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

MODELING OF THE SEPARATION OF PARTICLES NOT RETAINED IN THE STAGE OF SEDIMENTATION ON CHANELS: EXTRACTION PROCESS CASSAVA STARCH

Biotecnología en el Sector Agropecuario y Agroindustrial, 2014
On the settling stage in channels of the extraction process of the cassava starch, is generated around 80% of the total wastewater from the process. On this study, we analyze the theoretical modeling of the particles that are not retained in the channels
Patricia Torres Lozada, Yelena Carolina Valencia, Teresita Canchala   +2 more
doaj  

ESTUDIO SOBRE LA INSERCIÓN DE LA GESTIÓN AMBIENTAL EN LAS POLÍTICAS SECTORIALES CASO COLOMBIA [PDF]

Este estudio presenta una revisión de la regulación ambiental en Colombia y de sus resultados, concentrándose en el análisis del desempeño ambiental de la industria manufacturera y del sector energético.
Eduardo Uribe, Marcela Meléndez
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Low doses of ochratoxin A induce micronucleus formation and delay DNA repair in human lymphocytes [PDF]

, 2014
The contamination of food commodities by fungal toxins has attracted great interest because many of these mycotoxins are responsible for different diseases, including cancer and other chronic illnesses. Ochratoxin A (OTA) is a mycotoxin naturally present
Barrón-Vivanco, Briscia S., Benitez-Trinidad, alma B., González Arias, Cyndia A., Marín Sillué, Sònia, Medina-Díaz, Irma M., Ramos Girona, Antonio J., Robledo-Marenco, Lourdes, Rojas-García, A. E., Sanchís Almenar, Vicente, Sordo, Montserrat   +9 more
core   +2 more sources

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source