Results 91 to 100 of about 7,299,202 (356)
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
The Making of a “Philanthropreneur” (Interview with Trevor Field and Mark Melman, Playpumps International) [PDF]
, 2012 “Be mindful of taking care of yourself without excesses.” In the case of Playpumps® International, an NGO based in Johannesburg, South Africa, coupling a not-for-profit with a for-profit company produced the needed incentive to bear truth to the idiom ...
core +1 more source
Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger +2 more
wiley +1 more source
Design and fabrication of a photovoltaic power system for the Papago Indian village of Schuchuli (Gunsight), Arizona [PDF]
A stand alone photovoltaic power system for installation in the Papago Indian village of Schuchuli is being designed and fabricated to provide electricity for village water pumping and basic domestic needs.
Bifano, W. J. +2 more
core +1 more source
Model assisted phenotyping of processes involved in rice response to drought: case study of a tropical japonica population during vegetative phase : [Abstract, P 7.15] [PDF]
, 2009 Tropical japonica rice is frequently exposed to drought in upland ecosystems. Its drought tolerance is poor compared to other crops but the group has great genetic, in part unexploited diversity in adaptations.
Dinkguhn, M. +7 more
core
Hybrid photovoltaic-thermoelectric generator powered synchronous reluctance motor for pumping applications [PDF]
, 2019 The interest in photovoltaic (PV) pumping systems has increased, particularly in rural areas where there is no grid supply available. However, both the performance and the cost of the whole system are still an obstacle for a wide spread of this ...
Al-Dahifallah, Mujahed +3 more
core +2 more sources
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
EnergiesIn an overwhelming number of cases, the closure of a coal mine in Poland, for safety reasons, requires the installation of a pumping station and systems for the drainage of inflowing water due to its connection via roadways, goaves, or water-leaking ...
Kajetan d’Obyrn +4 more
doaj +1 more source
DOE and AID stand-alone photovoltaic activities [PDF]
The NASA Lewis Research Center (LeRC) is managing stand-alone photovoltaic (PV) system activities sponsored by the U.S. Department of Energy (DOE) and the U.S. Agency for International Development (AID).
Bifano, W. J., Ratajczak, A. F.
core +1 more source
Conversion Of Mechanical Water Pump To Electric Water Pump For A Ci Engine
, 2015 {"references": ["John Moffat, Chris James Leck, \"Cooling systems\", U.S. Patent No:\nUS78408165B2, Apr 2, 2013.", "Eric Andris, Bob Lindsay, \"Cooling system\", U.S. Patent No:\nUS833172B2, Dec 18, 2012.", "John Moffat, Chris James Leck, \"Cooling systems\", U.S Patent no:\nUS8291870B2, Oct 23, 2012.", "Franco Cimmatti, FabrizioFaverretto, \"Cooling ...
K. Arunachalam, P. Mannar Jawahar
openaire +1 more source