Results 71 to 80 of about 3,219,487 (379)

THE EFFECTIVENESS OF INNOVATIVE TECHNOLOGIES FOR ENERGY SUPPLY OF GREENHOSES

open access: yesRUDN Journal of Engineering Research, 2017
Greenhouse industry around the world is actively introducing innovative technology. The suggested way to improve the cost efficiency of greenhouses is to use power supply systems, including heat pumps.
I K Shatalov, I I Shatalova
doaj   +1 more source

General Thermodynamic Properties of FRW Universe and Heat Engine

open access: yesUniverse, 2022
In this work, the Friedmann–Robertson–Walker (FRW) Universe is considered a thermodynamic system, where the cosmological constant generates the thermodynamic pressure.
Ujjal Debnath
doaj   +1 more source

Conical holographic heat engines [PDF]

open access: yesClassical and Quantum Gravity, 2019
We demonstrate that adding a conical deficit to a black hole holographic heat engine increases its efficiency; in contrast, allowing a black hole to accelerate {\it decreases} efficiency if the same average conical deficit is maintained. Adding other charges to the black hole does not change this qualitative effect.
Wasif Ahmed   +4 more
openaire   +3 more sources

2D-statement simulation of thermogasdynamic processes in a rotary-blade engine with external heat supply

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics
To analyze the characteristics of a rotor-blade engine with external heat supply, a 2D model of this mechanism is considered. The simulation took into account the movement of the working chambers of the engine and the change in their shape.
Koyokin Vadim, Bulovich Sergey
doaj   +1 more source

Verification of ignition energy time distribution control for a diluted combustion engine

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Several high energy ignitions have been proposed to improve ignition performance of diluted combustion recently. One of the major issues in the high energy ignition systems is heat generation of an ignition coil due to increase of power consumption. This
Eiichiro OHATA, Kazuhiro ORYOJI
doaj   +1 more source

Optimizing the Classical Heat Engine [PDF]

open access: yesPhysical Review Letters, 2000
A pair of systems at different temperatures is a classic environment for a heat engine, which produces work during the relaxation to a common equilibrium. It is generally believed that a direct interaction between the two systems will always decrease the amount of the obtainable work, due to inevitable dissipation.
Allahverdyan, A. E.   +1 more
openaire   +5 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Simplified heat engine [PDF]

open access: yes, 1975
In Sterling-cycle heat engine, pneumatic system is used to drive displacer/regenerator, eliminating mechanical linkages and ...
Higa, W. H.
core   +1 more source

EVOLUTION OF HEAT ENGINES

open access: yesMechanics of Machines, Mechanisms and Materials
The process of development of heat engines, their types, modifications, problems encountered on this way and ways to overcome them are considered. The creative search of engineers, scientists, and practitioners who operated heat engines (from the moment of their appearance to the present day) is described.
Mikalai U. Kochatau   +5 more
openaire   +1 more source

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