Results 111 to 120 of about 215,200 (314)
Enhancing Copper Leaching from Refractory Copper Oxide Ore Using Organic Cationic Surfactant
SeparationsThe copper oxide ore in Zambia exhibits complex mineralogical characteristics, with copper primarily occurring in mica. The local hydrometallurgical plant employs heating–agitation acid leaching, which is hindered by a low leaching rate and prolonged ...
Yang Li +4 more
doaj +1 more source
Nitrogen Supply and Management in Organic Farming [PDF]
, 2008 This topic review aims to summarise knowledge and experience of Nitrogen supply and management in organic farming systems, including : Nitrogen fixation; Nitrogen recycling; the effect of the length of the fertility building phase or ley and the effect ...
Briggs, Stephen
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Advanced Functional Materials, EarlyView.Scanning electrochemical microscopy reveals reactant diffusion through porous carbon shells to PtFe cores, while the carbon‐encapsulated PtFe enables high‐performance HT‐PEMFC operation by sieving phosphate ions that induce catalyst poisoning. ABSTRACT High‐temperature polymer electrolyte membrane fuel cells (HT‐PEMFCs) operating at 160°C on phosphoric
Myeong‐Geun Kim +9 more
wiley +1 more source
Modification of the simple mass balance equation for calculation of critical loads of acidity. [PDF]
, 1995 Over the last few years, the simple mass balance equation for the calculation of critical loads of acidity has been gradually modified as the underlying critical load concepts have developed and as problems with particular forms of the equation have been
Cresser, M. +7 more
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Use of a zeolite synthesised from alkali treated kaolin as a K fertiliser: Glasshouse experiments on leaching and uptake of K by wheat plants in sandy soil [PDF]
, 2011 Zeolite N, a zeolite referred to in earlier publications as MesoLite, is made by caustic reaction of kaolin at temperatures between 80 °C and 95 °C. This material has a very high cation exchange capacity (CEC ≈ 500 meq/100 g).
Gilkes, Robert +2 more
core +2 more sources
Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review
Advanced Healthcare Materials, EarlyView.Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro +8 more
wiley +1 more source
Roasting Extraction of Lithium from Fly Ash: A Study of Influential Parameters and Mechanisms
Applied SciencesFly ash consists of significant amounts of lithium, which is an essential resource for developing batteries. This study proposed an efficient method for extracting lithium from fly ash. First, we explored the parameters affecting the activation effect of
Fayue Li +5 more
doaj +1 more source
Kecerdasan emosi dalam kalangan pelajar Diploma Pendidikan Lepasan Ijazah (DPLI) Universiti Tun Hussein Onn Malaysia [PDF]
, 2013 Kecerdasan emosi dapat dijadikan sebagai panduan bagi mewujudkan pendidikan yang berkualiti serta sebagai asas pemerolehan ilmu pengetahuan bagi seseorang pendidik dalam menjalankan tugasnya sebagai seorang guru.
Che Ani, Rashida
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Hydrometallurgical extraction of Al and Si from kaolinitic clays [PDF]
, 2017 Herein is presented the results of a study on the hydrometallurgic extractionand recovery of aluminum and silicon by leaching of kaolinitic clays with HF. Thestudied extraction parameters were: temperature, reaction time, solid/liquid ratio,concentration,
Pinna, Eliana Guadalupe +3 more
core +3 more sources
Advanced Healthcare Materials, EarlyView.A long‐lived, five‐cell‐type human neurovascular (PENTA) model recreates vascular disorganization and incomplete repair after traumatic brain injury (TBI). By integrating endothelial, glial, neuronal, and immune components within a 3D scaffold, the platform enables time‐resolved analysis of neurovascular remodeling and provides a human‐relevant system ...
Daniel S. Hinrichsen +6 more
wiley +1 more source