Results 11 to 20 of about 7,472,306 (302)

Effect of Porosity and Injection Ratio on the Performance of Transpiration Cooling through Gyroids

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2023
This paper presents experimental measurements of adiabatic effectiveness for three transpiration cooling porosities (ϕ= 0.3, 0.4, and 0.5) constructed from gyroid lattice structures.
Benjamin J. Brimacombe   +4 more
doaj   +1 more source

Initiating the effective unification of black hole horizon area and entropy quantization with quasi-normal modes [PDF]

open access: yes, 2014
Black hole (BH) quantization may be the key to unlocking a unifying theory of quantum gravity (QG). Surmounting evidence in the field of BH research continues to support a horizon (surface) area with a discrete and uniformly spaced spectrum, but there is
Corda, C.   +3 more
core   +7 more sources

Structural changes in family areas of the steppe marmot (Marmota bobak) under succession in reserve areas [PDF]

open access: yesПраці Теріологічної школи, 2014
The structure and development of marmot family areas were studied in conditions of the long-term decline in animal abundance caused by the succession of vegetation in the Striltsivsky Steppe (Luhansk Oblast) after the area has been protected from human ...
E. Borovyk
doaj   +1 more source

Determination of Effective Flow and Force Areas for Reed Type Compressor Valve Systems: Part 1—Model Derivation Using CFD Analysis Results

open access: yesEnergies, 2023
The dynamic behavior of reed valves during suction and discharge is very important in predicting compressor performance and valve fatigue fracture.
Jeong Deok Park   +4 more
doaj   +1 more source

Maximum Gain, Effective Area, and Directivity [PDF]

open access: yes, 2018
Fundamental bounds on antenna gain are found via convex optimization of the current density in a prescribed region. Various constraints are considered, including self-resonance and only partial control of the current distribution.
Capek, Miloslav, Gustafsson, Mats
core   +2 more sources

Detection of primary chemical analytes in the THz regime with photonic crystal fiber

open access: yesSensing and Bio-Sensing Research, 2021
This paper represents a design mechanism and numerical investigations of a PCF sensor that contains a hollow core for sensing the primary chemical analytes namely water, ethanol, and benzene in the 1–2 THz regime.
Rayhan Habib Jibon   +2 more
doaj   +1 more source

International Effects of Euro Area Forward Guidance* [PDF]

open access: yesOxford Bulletin of Economics and Statistics, 2020
AbstractIn this paper, we investigate the international effects of euro rate forward guidance (FG) and compare them to spillovers from a conventional monetary policy shock (MP). We identify the forward guidance shock via a combination of zero and sign restrictions that use the relationship between expectations and observed data and additionally draw on
Böck, Maximilian   +2 more
openaire   +2 more sources

Low-loss criterion and effective area considerations for photonic crystal fibers [PDF]

open access: yes, 2003
We study the class of endlessly single-mode all-silica photonic crystal fibers with a triangular air-hole cladding. We consider the sensibility to longitudinal nonuniformities and the consequences and limitations for realizing low-loss large-mode area ...
Agrawal G P   +21 more
core   +2 more sources

Numerical model of the pneumatic diaphragm actuator

open access: yesMechanics and Advanced Technologies, 2017
The paper deals with the development of the numerical model of a pneumatic diaphragm actuator to be used in numerical modeling and investigation of such systems as automobile suspension and braking systems, machine tool devices, pressure control valves ...
Aleksandr Kovalenko
doaj   +1 more source

Determination of pressure balance distortion coefficient and zero-pressure effective area uncertainties [PDF]

open access: yesInternational Journal of Metrology and Quality Engineering, 2011
The behaviour of piston-cylinder operated pressure balances is characterized by the distortion coefficient λ and zero-pressure effective area A0 which model the variation of a pressure balance’s area in terms of the ...
Ramnath V.
doaj   +1 more source

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