Results 21 to 30 of about 4,365,484 (328)

Photometry of the Magnetic White Dwarf SDSS 121209.31+013627.7 [PDF]

open access: yes, 2006
The results of 27 hours of time series photometry of SDSS 121209.31+013627.7 are presented. The binary period established from spectroscopy is confirmed and refined to 0.061412 d (88.43 minutes).
Koen, C., Maxted, P. F. L.
core   +2 more sources

Exergy Losses in the Szewalski Binary Vapor Cycle

open access: yesEntropy, 2015
In this publication, we present an energy and exergy analysis of the Szewalski binary vapor cycle based on a model of a supercritical steam power plant. We used energy analysis to conduct a preliminary optimization of the cycle.
Tomasz Kowalczyk   +2 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

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

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

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

Exergetic, Economic and Exergo-Environmental Analysis of Bottoming Power Cycles Operating with CO2-Based Binary Mixture

open access: yesEnergies, 2020
This study focused on investigating the bottoming power cycles operating with CO2-based binary mixture, taking into account exergetic, economic and exergo-environmental impact indices.
Muhammad Haroon   +6 more
doaj   +1 more source

Functional modules in the Arabidopsis core cell cycle binary protein-protein interaction network [PDF]

open access: yes, 2010
As in other eukaryotes, cell division in plants is highly conserved and regulated by cyclin-dependent kinases (CDKs) that are themselves predominantly regulated at the posttranscriptional level by their association with proteins such as cyclins. Although
Boruc, Joanna   +8 more
core   +4 more sources

Determining the physical conditions of extremely young Class 0 circumbinary disk around VLA1623A

open access: yes, 2020
We present detailed analysis of high-resolution C18O (2-1), SO (88-77), CO (3-2) and DCO+ (3-2) data obtained by the Atacama Large Millimeter/sub-millimeter Array (ALMA) towards a Class 0 Keplerian circumbinary disk around VLA1623A, which represents one ...
Cheong, Pou-Ieng   +5 more
core   +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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