Results 101 to 110 of about 554,979 (316)

IMPROVEMENT OF TWO-STAGE FUEL-SUPPLY CHARASTERISTICS BY MEANS OF ELECTROHYDRAULIC JET MODERNIZATION [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2010
For improvement of two stage fuel-supply characteristics of electrohydraulic jet it is offered to install an additional volume before the inlet nozzle. In the result of a calculation research there were determined the geometrical dimensions of the given ...
А. Vrublevskiy   +2 more
doaj  

Experiment of complex flow in full size horizontal wells with perforated completion

open access: yesPetroleum Exploration and Development, 2013
A full size perforated casing of 139.7 mm in external diameter was adopted to simulate the horizontal wellbore. The influences of perforation parameters and injection rate on the pressure drop in horizontal wells were investigated by experiments.
Jianguang WEI   +3 more
doaj   +1 more source

Reconfigurable Logic‐in‐Memory Operations Enabled by Triple‐Gated Feedback Field‐Effect Transistors for Area‐Efficient Computing

open access: yesAdvanced Engineering Materials, EarlyView.
A reconfigurable logic‐in‐memory cell composed of triple‐gated feedback field‐effect transistors implements multiple combinational logic functions within a single configuration. By utilizing program gates as dynamic input terminals, the proposed cell performs full adder, full subtractor, 2‐to‐1 multiplexer, and 4‐to‐2 encoder operations without ...
Minhyeok Seol   +5 more
wiley   +1 more source

Experimental aeroacoustics study on jet noise reduction using tangential air injection

open access: yes, 2011
PhDAircraft jet exhausts are a source of undesirable noise and continue to be an area of investigation driven by increasingly stringent regulation. The noise is produced by the unsteady mixing of the jet with the surrounding air and is dominated by the ...
Ahmad, Arsalan
core  

Influência dos parâmetros de moldagem na estrutura e propriedade de peças de paredes espessas e finas de polipropileno isotático injetadas em moldes-protótipo fabricados por vazamento de resina epóxi [PDF]

open access: yes, 2007
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnologico. Programa de Pós-Graduação em Engenharia MecânicaA necessidade de protótipos com as mesmas propriedades do produto final, fez com que as técnicas de prototipagem rápida ...
Cavalheiro, Andrei Zwetsch
core  

Development of a computer-assisted high-pressure Injection device for vertebroplasty

open access: yes, 2007
A novel computer-assisted injection device for the delivery of highly viscous bone cements in vertebroplasty is presented. It addresses the shortcomings of manual injection systems ranging from low-pressure and poor level of control to device failure ...
Loeffel, Mario   +5 more
core   +1 more source

Numerical Investigation and Optimization of Transpiration Cooling Plate Structures with Combined Particle Diameter

open access: yesEnergies
Transpiration cooling is an efficient thermal protection technology used for scramjet combustors and other components. However, a conventional transpiration cooling plate structure with uniform porous media distribution suffers from a large temperature ...
Dan Wang   +4 more
doaj   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

open access: yesAdvanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky   +3 more
wiley   +1 more source

The Effect of Injection Pressure and Injection timing on the Performance and Emission Parameters with Algae oil Methyl Ester Blend as a Fuel for CI Engine [PDF]

open access: yes, 2015
It has become increasingly obvious that continued reliance on fossil fuel energy resources is unsustainable, owing to both depleting world reserves and the green house gas emissions associated with their use.
Mrityunjaya Swamy, K.M., Ramesha, D.K.
core  

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

open access: yesAdvanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand   +5 more
wiley   +1 more source

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