Results 51 to 60 of about 10,570,902 (260)
Study on Process Mineralogy of a Tungsten Ore in Yunnan Province
Kuangchan zonghe liyong, 2022 By applying chemical phase analysis, mineral liberation analyzer (MLA), SEM, optical microscope and energy spectrum analysis, the mineral composition, grain size and occurrence states of valuable minerals are studied in this article, also the ...
Xingwang Zhang, Zhiyong Sun
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Biological Reviews, EarlyView.ABSTRACT For millennia, human activities have transformed ecosystems globally. Determining which landscapes are predominantly anthropogenic is crucial to conservation and habitat restoration. Madagascar, a critically‐threatened biodiversity hotspot, is a prominent example.
Grant S. Joseph +7 more
wiley +1 more source
A Unified Approach for the Synthesis of Conformationally Locked and sp2‐sp3 Fused Hybrids
Chemistry – A European Journal, EarlyView.This study presents a systematic platform to build rigid sp2–sp3 hybrids via benzyne cycloadditions. Arene‑fused bicyclic oxa‐, aza‐, and carbocycles are converted into medicinally relevant amino acids and applied to Enalapril analogues synthesis. The hybrids combine aromatic interactions with 3D rigidity, tuning lipophilicity, pKa, and solubility ...
Ervis Saraci +8 more
wiley +1 more source
Trial calculation of relating the equilibrium state of minerals to the descriptive mineralogy [PDF]
, 1997 Statistical calculation have been carried out on the volumes of the asymmetric unit of minerals. This treatment is related to the origin of the symmetry and periodicity of the crystals, and to the equilibrium conditions of these crystals.
Kawahara, Akira
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Peroxodisulfate‐Enhanced Leaching of Deep‐Sea Manganese Crusts and Sulfides
Chemie Ingenieur Technik, EarlyView.Ammonium peroxodisulfate enables efficient leaching of deep‐sea manganese crusts and massive sulfides while offering electrolytic recycling. High leaching yields for V, Mn, Co, Mo, Sn, and W, along with complete leaching of As and Sb, highlight its potential as a powerful and sustainable oxidant for marine resource processing.
Bastian Hansel +5 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Preparation, modification, and characterization of biochar from woodchips and its application in stream water filtration, evaluated through physicochemical and microbiological analyses. Abstract Global microbial water contamination affects 1.8 billion people, necessitating efficient and sustainable treatment methods.
Tariq Khalil +8 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study investigates the effect of moisture on CO2 adsorption in South African coals using both experimental and machine learning approaches. Three coal samples (SL, TN, and EM) with varying ranks (RoVmr: 3.49%, 1.26%, and 0.64%, respectively) were collected from different regions of South Africa.
Kasturie Premlall +3 more
wiley +1 more source
Process Mineralogy Analysis of Copper-zinc Sulfide Ore from the Simao Region, Yunnan Province
Yankuang ceshi, 2014 There are large amounts of refractory copper-zinc polymetallic sulfide ore resources in the Simao region of Yunnan Province. Traditional mineral identification under microscope is difficult to automatically accurately determine copper, zinc and other ...
XIE Hai-yun +5 more
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clay mineralogy : spectroscopic and chemical determinative methods
, 1994 x+367hlm ...
WILSON, M.J, CLAY MINERALOGY
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