Results 21 to 30 of about 2,290,362 (336)

A Survey of Application of Mechanical Specific Energy in Petroleum and Space Drilling

open access: yesEnergies, 2022
The optimization of drilling operations is an ongoing necessity since the major proportion of the terrestrial hydrocarbon reservoirs has been exhausted. Furthermore, there is a growing tendency among the space exploration agencies to drill the subsurface
Mitra Khalilidermani, Dariusz Knez
doaj   +1 more source

Electrostrictive Polymers for Mechanical-to-Electrical Energy Harvesting [PDF]

open access: yes, 2016
Research of electrostrictive polymers has generated new opportunities for harvesting energy from the surrounding environment and converting it into usable electrical energy. Piezoelectric ceramic based devices have long been used in energy harvesting for
Coutu, Ronald A., Jr.   +2 more
core   +2 more sources

Localized Actual Meteorological Year File Creator (LAF): A tool for using locally observed weather data in building energy simulations

open access: yesSoftwareX, 2019
The Localized Actual Meteorological Year File Creator (LAF) application provides web-based access to real meteorological data and processes it into a weather file suitable for building energy modeling.
Carlo Bianchi, Amanda D. Smith
doaj   +1 more source

Review on Innovative Piezoelectric Materials for Mechanical Energy Harvesting

open access: yesEnergies, 2022
The huge number of electronic devices called the Internet of Things requires miniaturized, autonomous and ecologically sustainable power sources. A viable way to power these devices is by converting mechanical energy into electrical through electro ...
G. Clementi   +9 more
semanticscholar   +1 more source

Humans, geometric similarity and the Froude number: is ''reasonably close'' really close enough? [PDF]

open access: yes, 2012
Summary Understanding locomotor energetics is imperative, because energy expended during locomotion, a requisite feature of primate subsistence, is lost to reproduction.
Kramer, P.A., Sylvester, A.D.
core   +3 more sources

Stochastic Optimization for Integration of Renewable Energy Technologies in District Energy Systems for Cost-Effective Use

open access: yesEnergies, 2019
Stochastic optimization of a district energy system (DES) is investigated with renewable energy systems integration and uncertainty analysis to meet all three major types of energy consumption: electricity, heating, and cooling.
Thomas T. D. Tran, Amanda D. Smith
doaj   +1 more source

Binding energy and specificity in the catalytic mechanism of yeast aldose reductases [PDF]

open access: yesBiochemical Journal, 1999
Derivatives of D-xylose and D-glucose, in which the hydroxy groups at C-5, and C-5 and C-6 were replaced by fluorine, hydrogen and azide, were synthesized and used as substrates of the NAD(P)H-dependent aldehyde reduction catalysed by aldose reductases isolated from the yeasts Candida tenuis, C. intermedia and Cryptococcus flavus.
B, Nidetzky   +3 more
openaire   +2 more sources

Technology of Rock Destruction by Combined Explosion-Mechanical Load [PDF]

open access: yesНаукові вісті Національного технічного університету України "Київський політехнічний інститут", 2017
Background. Rock drilling is characterized by an energy capacity of more than 120 kWh/m3. This is due to the fact that about 90 % of the energy is expended on the “preparation” of rocks for destruction.
Oleg M. Terentiev, Pavlo V. Gontar
doaj   +1 more source

Mechanical Size Reduction Of Lignocellulosic Biomass: A Mini-Review

open access: yesChemical Engineering Transactions, 2022
The principles of biomass mechanical size reduction and models predicting specific energy requirements of biomass comminution on particle size characteristics and machine variables were summarized in this mini-review.
Lukáš Krátký
doaj   +1 more source

Quantum theory for parametric interactions of light and hypersound [PDF]

open access: yes, 1965
The problem of energy exchange between two electro-magnetic modes of different frequencies and an acoustic mode is formulated and solved. The results of the quantum mechanical analysis are also analyzed in classical terms and are found to be consistent ...
Yariv, A.
core   +1 more source

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