Results 71 to 80 of about 262,236 (353)

How secular staganation can affect income class structure in european countries: institutional and policy implications [PDF]

open access: yes, 2019
In recent years, there has been increasing debate about the low economic growth and the risk of secular stagnation in economically advanced countries.
Barcena-Martin, Elena Maria   +1 more
core  

Oblique Stagnation-Point Darcy Flow towards a Stretching Sheet

open access: yesJournal of Applied Fluid Mechanics, 2012
An attempt is made for the study of steady two-dimensional flow of a viscous and incompressible fluid striking at some angle of incidence on a stretching sheet.
P Singh, D Sinha, N.S. Tomer
doaj  

Electricity Generation From Ambient Water Evaporation in the Absence of Sunlight via PVA‐Based Porous Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
In this article, a water‐evaporation driven energy harvester is devised that works even in the absence of sunlight. This is achieved by combining PVA hydrogel with thermoelectrics (TEG) to directly capture energy from water evaporation. Under mild conditions (RH 40%, T of 26 °C, and 2.8 m s−1 wind), 1.71 mW (1.02 W m−2) power can be generated, >3 fold ...
Zichen Gong, Ady Suwardi, Jing Cao
wiley   +1 more source

Computational method for energy transport of MHD nanofluids flow near non-aligned stagnation point with non-linear thermal radiation and interface slip

open access: yesResults in Engineering, 2023
Haemodialysis, nuclear reactors, cooling and heating systems, and heat exchangers are glimpses of applications where thermal problems are considered as a fundamental for flow over aligned stagnation points with heat and mass transfer components.
Sultan Alqahtani   +4 more
doaj   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Stagnation-point flow over a stretching/shrinking sheet in a porous medium [PDF]

open access: yes, 2013
An analysis is performed for the stagnation-point flow over a stretching/shrinking sheet in a porous medium. By using similarity variables, the governing system of partial differential equations are reduced to the coupled ordinary differential equations ...
Mohd Ishak, Anuar, Rosali, Haliza
core   +1 more source

Mechanisms of Anode Interfacial Phenomena and Multi‐perspective Optimization in Aqueous Alkaline Zinc‐Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Zinc‐air batteries demonstrate great potential for sustainable energy storage but face major anode‐related challenges. This review provides a mechanism‐driven overview of zinc anode interfacial issues, e.g. dendrite formation, passivation, self‐corrosion, and hydrogen evolution; and explores advances in electrode, surface, and electrolyte engineering ...
Hong Zhao   +2 more
wiley   +1 more source

MHD Stagnation Flow of a Newtonian Fluid towards a Uniformly Heated and Moving Vertical Plate

open access: yesJournal of Applied Fluid Mechanics, 2016
Stagnation flow of an electrically conducting incompressible viscous fluid towards a moving vertical plate in the presence of a constant magnetic field is investigated. By using the appropriate transformations for the velocity components and temperature,
M. S. Demir, Serdar Barış
doaj   +2 more sources

Self‐Assembled Heterosymmetric Structure with Tunable Polarization Optics for Reversible Matrix Encryption

open access: yesAdvanced Functional Materials, EarlyView.
Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song   +7 more
wiley   +1 more source

Theoretical Analysis of Groundwater Flow Patterns Near Stagnation Points

open access: yesWater Resources Research, 2019
The importance of stagnation points for characterizing groundwater flow patterns has long been recognized. However, the possible streamline configurations near stagnation points under the constraints of Darcy's law have not been thoroughly investigated ...
Etienne Bresciani   +2 more
doaj   +1 more source

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