Results 21 to 30 of about 148,639 (308)

Approach to recover strategic metals from brines [PDF]

, 1981
The objective of the proposed research is to evaluate hypersaline brines from geothermal sources and salt domes as possible sources for some strategic metals. This research is suggested because several previous analyses of brine from geothermal wells in the Imperial Valley, California, and from Gulf Coast salt domes, indicate near commercial values for
Raber, E., Harrar, J., Gregg, D.
openaire   +2 more sources

Effect of Alkyl Substituents on the Hydrogen Bonding and Molecular Structure of Benzophenylhydroxamic Acids Crystal structure of UO2 Complex of p-Isopropylbenzophenylhydroxamic Acid [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1995
The effect of alkyl substituents on the C-phenyl and/or the N-Phenyl ring of benzophenylhydroxamic acid on their molecular structure and hydrogen bonding has been investigated. The predominant configuration in CHCl3 is determined by steric and electronic
Masoud Hojjatie, Subramaniam Muralidharan, Saswait P.Bag, Giris C.Panda, Henry Freiser   +4 more
doaj  

Durability of alkali-activated materials with different C–S–H and N-A-S-H gels in acid and alkaline environment

Journal of Materials Research and Technology, 2022
This work explores the durability of alkali-activated materials exposed to acidic and alkaline environments to analyze and evaluate their applications. The alkali-activated materials of metakaolin and metakaolin-mine tailings were immersed in solutions ...
Min Yang, Yanjin Zheng, Xing Li, Xiaojun Yang, Feng Rao, Lele Zhong   +5 more
doaj   +1 more source

Modeling Strategic Decisions in the Formation of the Early Neo-Assyrian Empire [PDF]

, 2015
Understanding patterns of conflict and pathways in which political history became established is critical to understanding how large states and empires ultimately develop and come to rule given regions and influence subsequent events.
Altaweel, M, Baudains, P, Wilson, A, Zamazalová, S   +3 more
core   +1 more source

Construction of a Two-Dimensional GO/Ti₃C₂T_X Composite Membrane and Investigation of Mg²⁺/Li⁺ Separation Performance

Nanomaterials, 2023
Graphene oxide (GO) two-dimensional (2D) membranes with unique layer structures and tunable layer spacing have special advantages and great potential in the field of water treatment.
Zhenhua Feng, Chengwen Liu, Binbin Tang, Xiaojun Yang, Wenjie Jiang, Peng Wang, Xianjun Tang, Hongshan Wang, Xiangdong Zeng, Guangyong Zeng   +9 more
doaj   +1 more source

Assessment of Different Cooling Techniques for Reduced Mechanical Stress in the Windings of Electrical Machines

Energies, 2019
Thermal loading can induce mechanical stresses in the windings of electrical machines, especially those impregnated with epoxy resins, which is mostly the case in modern traction motors.
Bishal Silwal, Abdalla Hussein Mohamed, Jasper Nonneman, Michel De Paepe, Peter Sergeant   +4 more
doaj   +1 more source

Electrochemical Approaches for the Recovery of Metals from Electronic Waste: A Critical Review

Recycling, 2021
Electronic waste (e-waste) management and recycling are gaining significant attention due to the presence of precious, critical, or strategic metals combined with the associated environmental burden of recovering metals from natural mines. Metal recovery
Varun Rai, Daobin Liu, Dong Xia, Yamuna Jayaraman, Jean-Christophe P. Gabriel   +4 more
doaj   +1 more source

Environmental sustainability in the mining sector: evidence from Catalan companies [PDF]

, 2014
This paper examines the adoption of environmental practices in small and medium sized companies inthe surface mining industry in Catalonia (Spain). To fulfill this aim, a survey of 41 items concernint environmental management systems and environmentally ...
Freijo Álvarez, Modesto, Sanmiquel Pera, Lluís, Vintró Sánchez, Carla   +2 more
core   +3 more sources

Effects of Contamination on the Recyclability of NdFeB Permanent Magnets via Short-Loop Processing: Review of Common Contaminants and Study on Ni Coating Residues

Recycling
Short-loop recycling of NdFeB trades a reduced ecological burden for a higher sensitivity towards contamination, as the powder is usually further processed as-is.
Laura Grau, Fabian Burkhardt, Nicolas Moll, Stefan Rathfelder, Spomenka Kobe, Carlo Burkhardt   +5 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source