Results 91 to 100 of about 13,334 (263)

Efficiency Evaluation of the Ejector Cooling Cycle using a New Generation of HFO/HCFO Refrigerant as a R134a Replacement

open access: yesEnergies, 2018
Theoretical investigations of the ejector refrigeration system using hydrofluoroolefins (HFOs) and hydrochlorofluoroolefin (HCFO) refrigerants are presented and discussed. A comparative study for eight olefins and R134a as the reference fluid was made on
Bartosz Gil, Jacek Kasperski
doaj   +1 more source

STUDIES ON PERFORMANCE OF AIR ENTRAINED CONCRETE INFLUENCED BY THE VARIATIONS OF CEMENT CONTENTS, THE WATER CEMENT RATIO AND THE AMOUNT OF ENTRAINED AIR

open access: yesTransactions of the Japan Society of Civil Engineers, 1957
The measurements on heat of hydration and the observations of hydration process by microscopic picture have clarified the following points: the concrete with large water cement ratio (w/c) promoted the hydration up to the age 91 days, having a small increase of strength while the one with small water Cement ratio (w/c) contained a lot of unhydrated ...
openaire   +2 more sources

Design and Optimization of a Double‐Column Vapor Recompression Heat Pump Distillation Process via NSGA‐II for Separating Ternary Wide‐Boiling Mixtures

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study proposes a novel double‐column vapor recompression heat pump (DCVRHP) distillation process for separating ternary wide‐boiling‐range mixtures under two different vapor conditions: n‐hexane/n‐heptane/n‐octane using low pressure steam and n‐hexanol/n‐octanol/n‐decanol using high pressure steam.
Zeyang Li   +4 more
wiley   +1 more source

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

open access: yesAdvanced Physics Research, EarlyView.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra   +5 more
wiley   +1 more source

A review and assessment of the potential use of RNA:DNA ratios to assess the condition of entrained fish larvae

open access: yesEcological Indicators, 2016
AbstractIn rivers, lakes, and other aquatic systems throughout the world, intake pipes withdraw huge volumes of water for industrial purposes, including power plant cooling. During this process, large numbers of small-bodied, early life-stages of fish are pulled into pipes (i.e., entrained) and may be subjected to physical, thermal and chemical stress.
Foley, Carolyn J.   +2 more
openaire   +1 more source

Genetic Diversity, Adaptation, Wild Introgression, and Coat Color Mutation of Golden Yak

open access: yesAnimal Research and One Health, EarlyView.
Genetic diversity, adaptation, wild introgression, and coat color mutation of golden yak from two populations on the Qinghai‐Xizang Plateau. ABSTRACT The golden yak lives on the Qinghai‐Xizang Plateau with a golden coat and adapts to high altitudes and strong ultraviolet environment. The golden coat is a prominent phenotype in many domesticated species,
Huixuan Yan   +15 more
wiley   +1 more source

Experimental Study on Performance of Dual-serial-throat Nozzle Ejector and Two-phase Ejector Refrigeration Cycle System

open access: yesZhileng xuebao, 2014
The two-phase ejector refrigeration cycle (TPERC) system with a dual-serial-throat nozzle ejector was investigated experimentally, and the entrainment ratio of the ejector and the COP of the system were compared with those of the ejector with Laval ...
Ren Liqian, Guo Xianmin, Li Tianlong
doaj  

Coupling governs entrainment range of circadian clocks

open access: yesMolecular Systems Biology, 2010
Circadian clocks are endogenous oscillators driving daily rhythms in physiology and behavior. Synchronization of these timers to environmental light–dark cycles (‘entrainment’) is crucial for an organism's fitness.
Ute Abraham   +5 more
doaj   +1 more source

A Steam Ejector Refrigeration System Powered by Engine Combustion Waste Heat: Part 2. Understanding the Nature of the Shock Wave Structure

open access: yesApplied Sciences, 2019
In general, engine fuel combustion generates 30% waste heat, which is disposed to the environment. The use of the steam ejector refrigeration to recycle the waste heat and transfer them to useful energy source could be an environmentally friendly ...
Yu Han   +9 more
doaj   +1 more source

Potential contribution of biomass gasification‐based technology in energy transition: a technical review coupled with bibliometric studies

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biomass gasification technology has been extensively researched around the world; however, there is a need to evaluate the current research landscape and evolutionary direction of research in the broader context of energy transition. A systematic bibliometric analysis of the Web of Science database was performed for articles that fall within ...
Olasunkanmi Opeoluwa Adeoye   +5 more
wiley   +1 more source

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