Results 41 to 50 of about 705,360 (411)

Compact 3D Copper with Uniform Porous Structure Derived by Electrochemical Dealloying as Dendrite‐Free Lithium Metal Anode Current Collector

open access: yes, 2018
The development of lithium (Li) metal anodes Li metal batteries faces huge challenges such as uncontrolled Li dendrite growth and large volume change during Li plating/stripping, resulting in severe capacity decay and high safety hazards.
Hengbei Zhao   +10 more
semanticscholar   +1 more source

Influence of the molecular weight of polymer, solvents and operational condition in the electrospinning of polycaprolactone

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2017
The objective of this study was to determine the influence of the molecular weight of polycaprolactone, solvents and operational conditions to obtain polymeric nanofibers by the electrospinning technique.
Gabriel Jaime Colmenares-Roldán   +4 more
doaj   +1 more source

Re-election of Spodumene from Lithium Processing Tailings in Keeryin, Sichuan

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. In order to comprehensively evaluate the feasibility of spodumene beneficiation of certain lithium tailings in Sichuan, the mineralogy study of the lithium tailings beneficiation process ...
Yajun Mei   +3 more
doaj   +1 more source

The weighted words collector [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
We consider the word collector problem, i.e. the expected number of calls to a random weighted generator before all the words of a given length in a language are generated. The originality of this instance of the non-uniform coupon collector lies in the, potentially large, multiplicity of the words/coupons of a given probability/composition.
Du Boisberranger, Jérémie   +2 more
openaire   +7 more sources

Fe2O3/MgFe2O4 Nanosheet on Nickel Foam for High-Performance Asymmetric Supercapacitors

open access: yesCrystals, 2023
In this paper, the effects of nickel foam with different thicknesses, as a fluid collector, on the morphology and properties of electrode materials were explored.
Jiao Li   +4 more
doaj   +1 more source

Graded collector heterojunction bipolar transistor [PDF]

open access: yes, 1984
A graded collector heterojunction bipolar transistor is proposed. The graded collector improves device speed performance at high current densities by reducing the influence of the Kirk ...
Chiu, L. C.   +3 more
core   +1 more source

Simulation Study of a New Magnetorheological Polishing Fluid Collector Based on Air Seal

open access: yesApplied Sciences, 2022
Inverted magnetorheological (MR) polishing device mainly use a magnetic sealing ring to collect polishing fluid. This collection method wears the wheel surface of the polishing wheel, affects the surface accuracy of the polishing wheel, and introduces ...
Mingchun Li   +5 more
doaj   +1 more source

Effect of hybrid nanofluids mixture ratio on the performance of a photovoltaic thermal collector

open access: yesInternational Journal of Energy Research, 2020
Solar photovoltaic‐thermal (PV/T) collectors, are hybrid collectors used to convert solar radiation into usable thermal and electrical energy. Recently, the field of research on PV/T is has focused on improving the efficiency of the PV/T collector by ...
Ifeoluwa Wole-Osho   +5 more
semanticscholar   +1 more source

The Effect of Suspension Properties on Shear Yield Stress and Compressibility of the Suspension of Copper Flotation Tailings

open access: yesApplied Rheology, 2018
The performance of modern slurry dewatering equipment is essentially dependent on the efficiency of compression. Shear yield stress as an index of flowability and compressibility is affected by suspension properties, while the presence of reagents may be
Garmsiri Mohammad Reza   +1 more
doaj   +1 more source

Numerical and experimental investigation for hybrid Photovoltaic/thermal collector system in Duhok city

open access: yesJournal of Environmental Engineering and Landscape Management, 2020
The study deals with the experimental and numerical investigation of the hybrid Photovoltaic-thermal solar collector system in Duhok city during seven months and includes different measurements of temperatures, water mass flow rate, wind velocity, and ...
Semyan Khaled, Omar Ali
doaj   +1 more source

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