Results 21 to 30 of about 637,766 (337)

Geothermal Energy: Delivering on the Global Potential

open access: yesEnergies, 2015
Geothermal energy has been harnessed for recreational uses for millennia, but only for electricity generation for a little over a century. Although geothermal is unique amongst renewables for its baseload and renewable heat provision capabilities, uptake
Paul L. Younger
doaj   +1 more source

Master polytopes for cycles of binary matroids

open access: yesLinear Algebra and its Applications, 1989
L\({}_ k\), the complete binary matroid of order k, is defined by the binary standard representation matrix \([I| A_ k]\) where I is the identity matrix and \(A_ k\) is the 0-1 matrix with k columns that has as rows all possible distinct 0-1 vectors except for the k unit vectors and the 0-vector.
Grötschel, Martin, Truemper, K.
openaire   +3 more sources

Utilization of Excess Steam from a Vent Valve in a Geothermal Power Plant

open access: yesEnergy Nexus, 2022
A novel strategy is presented for the utilization of the excess steam released into the atmosphere from the vent valve of a geothermal power plant. In particular, three possible approaches are considered: dry-steam cycle, binary cycle, and Kalina cycle ...
Putri Sundari   +3 more
doaj   +1 more source

The intensities of canonical senescence biomarkers integrate the duration of cell-cycle withdrawal

open access: yesNature Communications, 2023
Senescence, a state of irreversible cell-cycle withdrawal, is difficult to distinguish from quiescence, a state of reversible cell-cycle withdrawal.
Humza M. Ashraf   +2 more
doaj   +1 more source

Finding Lean Induced Cycles in Binary Hypercubes [PDF]

open access: yes, 2009
Induced (chord-free) cycles in binary hypercubes have many applications in computer science. The state of the art for computing such cycles relies on genetic algorithms, which are, however, unable to perform a complete search. In this paper, we propose an approach to finding a special class of induced cycles we call lean, based on an efficient ...
Yury Chebiryak   +3 more
openaire   +5 more sources

Binary interaction uncertainty in the optimisation of a transcritical cycle: consequences on cycle and turbine design [PDF]

open access: yes4th European sCO2 Conference for Energy Systems, 2021
Conference Proceedings of the European sCO2 Conference4th European sCO2 Conference for Energy Systems: March 23-24, 2021, Online Conference, p ...
Aqel, O., White, M., Sayma, A. I.
openaire   +5 more sources

CYCLE-TO-CYCLE VARIATIONS OF THE SYMBIOTIC BINARY R AQR

open access: yesOdessa Astronomical Publications, 2017
The observations of R Aqr from the AFOEV database are analyzed. The corrected value of the period P = 387509 ±0.029d was determined from a 5-th order trigonometric polynomial fit with a corresponding initial epoch for the maximum To =244473376 ±0.93d and
L. L Chinarova   +2 more
doaj   +1 more source

Mass Transfer Cycles in Close Binaries with Evolved Companions [PDF]

open access: yesThe Astrophysical Journal, 1997
Accepted for publication in ApJ; 22 pages (4 figures)
King, AR, Kolb, U, Frank, J, Ritter, H
openaire   +5 more sources

Development of binary refrigeration system using CO2 refrigerant for convenience store

open access: yesMechanical Engineering Journal, 2016
From environmental point of view, natural refrigerants, whose Global Warming Potential (hereinafter GWP) is lower than commonly used refrigerants, have been considered in several industrial sectors.
Yukio YAMAGUCHI, Kenji AMAGAI
doaj   +1 more source

The Struve-Sahade effect in the optical spectra of O-type binaries I. Main-sequence systems [PDF]

open access: yes, 1999
We present a spectroscopic analysis of four massive binary systems that are known or are good candidates to display the Struve-Sahade effect (defined as the apparent strengthening of the secondary spectrum of the binary when the star is approaching, and ...
De Becker, M.   +4 more
core   +9 more sources

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