Results 81 to 90 of about 24,384 (167)

Process and model of a chemically buffered supported liquid membrane system for cobalt extraction

open access: yesJournal of Chemical Technology &Biotechnology, Volume 101, Issue 1, Page 154-164, January 2026.
Abstract BACKGROUND Cobalt is a valuable metal whose total annual supply from recycling is projected to be 34 000 t by 2030, primarily from batteries. Supported liquid membrane (SLM) technology is emerging as a promising technology alternative to conventional hydrometallurgy for cobalt recovery.
Ken Darcovich, Mauro M Dal‐Cin, Ben Yu
wiley   +1 more source

Symmetry breaking and restoration for interacting scalar and gauge fields in Lifshitz type theories

open access: yes, 2012
We consider the one-loop effective potential at zero and finite temperature in field theories with anisotropic space-time scaling, with critical exponent $z=2$, including both scalar and gauge fields.
Aitchison   +49 more
core   +1 more source

Pet ownership and psychosocial outcomes among the oldest old in Germany during the Covid‐19 pandemic. Findings based on the nationally representative “Old Age in Germany (D80+)”

open access: yesInternational Journal of Geriatric Psychiatry
AbstractObjectivesTo examine the association between pet ownership and psychosocial outcomes among the oldest old in Germany during the Covid‐19 pandemic.Methods/DesignData from the “Old Age in Germany (D80+)” study were used, a large, nationwide representative study covering both individuals living at home and individuals in nursing homes aged 80 ...
André Hajek   +4 more
openaire   +2 more sources

PENGARUH PENAMBAHAN PAKAN BUATAN OTOHIME DENGAN DOSIS YANG BERBEDA TERHADAP PERTUMBUHAN BERAT MUTLAK IKAN KERAPU CANTANG (EPINEPHELLUS FUSCOGUTTATUS-LANCEOLATUS) D50 - D80

open access: yesJurnal Perikanan Pantura (JPP)
Budidaya ikan kerapu cantang (Epinephelus fuscoguttatus-lanceolatus) merupakan salah satu komoditas unggulan perikanan budidaya yang memiliki nilai ekonomi tinggi untuk pasar domestik maupun ekspor. Namun, keberhasilan budidaya sangat dipengaruhi oleh manajemen pemberian pakan yang tepat, khususnya pada tahap larva.
Fathur Rosul   +2 more
openaire   +1 more source

Prevalence and factors associated with probable depression among the oldest old during the Covid‐19 pandemic: evidence from the large, nationally representative ‘Old Age in Germany (D80+)’ study

open access: yesPsychogeriatrics
AbstractBackgroundTo date, most studies examining the prevalence and determinants of depression among individuals aged 80 and over have used geographically limited samples that are not generalisable to the wider population. Thus, our aim was to identify the prevalence and the factors associated with probable depression among the oldest old in Germany ...
André Hajek   +6 more
openaire   +2 more sources

The Effect of Superficial Feed Velocity on the Column Flotation Recovery in Comparison with the Conventional Flotation Cells [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1997
Flotation is the most important process for concentrating mineral ores. This process may occur in any vessel such as column flotation, which has been used widely during the last decade and the conventional flotation cells.
Rahbar Rahimi, Majid Tahmooresi
doaj  

Unobservable Family and Individual Contributions to the Distributions ofIncome and Wealth [PDF]

open access: yes
This paper uses a data set composed of combinations of full brothers, half brothers as well as fathers and sons to measure the effect of common family background on households'income and wealth.
Clayne L. Pope, J. R. Kearl
core  

Artificial intelligence: Driving force in the evolution of human knowledge

open access: yesJournal of Innovation & Knowledge
This article proposes that artificial intelligence (AI) is positioned as a key driver of a new evolutionary stage of human knowledge, complementing human intelligence and facilitating the creation and development of sophisticated collective intelligence,
Cristian Colther, Dr.   +1 more
doaj   +1 more source

Particle Size Effects in Bioleaching of Uranium From Saghand Ore by Acidithiobacillus Ferrooxidans (A.f.) [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2012
The effect of mineral particle size on the bioleaching of uranium from Saghand mine (anomaly 1&2) by acidophilic mesophile Acidithiobacillus ferrooxidans was investigated in a shake flask.
A Rashidi, R Roosta Azad, S.J Safdari
doaj  

Hyperboloidal evolution of test fields in three spatial dimensions

open access: yes, 2010
We present the numerical implementation of a clean solution to the outer boundary and radiation extraction problems within the 3+1 formalism for hyperbolic partial differential equations on a given background. Our approach is based on compactification at
Anıl Zenginoğlu   +8 more
core   +1 more source

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