Results 91 to 100 of about 2,500 (185)
Populational adaptive evolution, chemotherapeutic resistance and multiple anti-cancer therapies [PDF]
, 2012 Resistance to chemotherapies, particularly to anticancer treatments, is an increasing medical concern. Among the many mechanisms at work in cancers, one of the most important is the selection of tumor cells expressing resistance genes or phenotypes ...
Clairambault, Jean +4 more
core +5 more sources
Optimization of a CFD – Heap leach model and sensitivity analysis of process operation [PDF]
, 2013 A comprehensive heap leach model, developed within a computational fluid dynamics software framework, provides a modeling tool to capture reactive dissolution in low grade ores of oxide and sulfide minerals.
Diane McBride, Nick Croft
core +1 more source
Effects of adding acid plant sulfur on heap leaching [PDF]
, 2012 Mining industry is heavily invested in mining various precious metals from their natural ore deposits. Copper ore deposits are found across the world and heap leaching of copper has been implemented effectively for years. The ore is broken down to copper
George, Jibin
core +1 more source
Lunar Regolith Biomining: Workshop Report [PDF]
On May 5th and 6th, 2007, NASA Ames Research Center hosted a workshop entitled 'Lunar Regolith Biomining'. The workshop addressed the feasibility of biologically-based mining of the lunar regolith along with identification of views and concepts for ...
Dalton, Bonnie P., Roberto, Frank F.
core +1 more source
Mechanisms of Bacterial Extracellular Electron Exchange. [PDF]
, 2016 The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism;
Butt, Julea N. +5 more
core +1 more source
Chemotactic transduction in biomining microorganisms
Hydrometallurgy, 2001 The oxidative attack of ores by bioleaching microorganisms requires that the cells adhere to specific sites on the surface of the minerals. This attachment will depend on the sensing by the microoganisms of a dissolved ion concentration gradient present in the immediate vicinity of the solid. Chemotactic responses towards metal ions and other compounds
openaire +4 more sources
Synthetic and Systems Biotechnology, 2018 Metabolic engineering offers an exquisite capacity to produce new molecules in a renewable manner. However, most industrial applications have focused on only a small subset of elements from the periodic table, centered around carbon biochemistry.
Kevin B. Reed, Hal S. Alper
doaj +1 more source
Myco-Architecture off Planet: Growing Surface Structures at Destination [PDF]
Our work focused on filling major select key technical knowledge gaps, and technical aspects to be addressed in a Phase II proposal were identified such as the secretion of glues or plastics by the fungi or bacteria to form biocomposites.
Head, James III +5 more
core +1 more source
Gold recovery from sulphide minerals:a bioprocessing approach [PDF]
, 2012 Sometimes gold recovery from its ores represents a challenge. This is due to fine dissemination and interlocking of the gold within the associated sulfide minerals.
Ahmed, Hussin, El-Midany, Ayman
core
Bioprocessing of ores: Application to space resources [PDF]
The role of microorganisms in the oxidation and leaching of various ores (especially those of copper, iron, and uranium) is well known. This role is increasingly being applied by the mining, metallurgy, and sewage industries in the bioconcentration of ...
Johansson, Karl R.
core +1 more source