Results 81 to 90 of about 13,398 (220)
Experiment on Frost and Defrost of Vehicle Heat Pump System
Zhileng xuebao, 2020 Focusing on the problem wherein the outdoor heat exchanger of a vehicle heat pump system is prone to frost in winter, this study designs and builds a corresponding experimental system for testing. The frost and defrost characteristics of the outdoor heat
Pan Leyan +7 more
doaj
Study on the Segmental Defrosting Performance of Air-source Heat Pumps
Zhileng xuebao, 2023 In this study, a novel defrosting method was developed for an air-source heat pump (ASHP) with a multi-circuit outdoor coil operating in a low-temperature and high-humidity environment.
Huang Tao +6 more
doaj
Simulating the Performance of a Heat Exchanger During Frosting [PDF]
, 2001 Factors affecting frost distribution are explored using a finite element model, developed and validated using a full-scale 8-row heat exchanger in a wind tunnel.
Bullard, C.W., Hrnjak, P.S., Verma, P.
core
A method for measuring the amount of hoar frost formation in the recuperation channels of ventilation systems using the adjustable mathematical model of this process [PDF]
, 2005 The paper presents a method for measuring the amount of hoar frost formation in the recuperation channels of ventilation systems using the adjustable mathematical model of the hoar frost process. The principle is based on the fact that the contour of the
Beckers, Stefan +7 more
core +1 more source
Digital Transformation of Retail Work: The Rise of Chaotic Rationalisation
British Journal of Industrial Relations, EarlyView.ABSTRACT We examine how new digital technologies are transforming labour processes in frontline jobs in United States (US) store‐based retail, examining the US as an extreme case of labour market liberalisation. Research on technological change presents three scenarios: job displacement, job enrichment and ‘digital Taylorism’ involving heightened ...
Chris Tilly, Françoise Carré
wiley +1 more source
Cytochrome P450 1A1 influences obesity‐induced pulmonary hypertension
British Journal of Pharmacology, EarlyView.Background and Purpose The contribution of obesity to pulmonary arterial hypertension (PAH) pathophysiology remains poorly understood. Adipose tissue synthesises estrogens via cytochrome P450 (CYP) 19A1 (aromatase), whereas circulating estrogens are metabolised in the lung by CYP1A1.
Joshua P. Dignam +12 more
wiley +1 more source
Zhileng xuebao, 2018 The values of excitation shear stress for frosting cream from ultrasonic high-frequency vibration were calculated using the finite element software COMSOL, and compared with the maximum adhesion stress obtained theoretically to demonstrate the ...
Zuo Jiandong +5 more
doaj
Alphabetic Trigrams and Tetragrams Update [PDF]
, 2018 An update on an article from May 1999 with examples for each alphabetic ...
Grant, Jeff
core +1 more source
Review of Frost-free and Defrost Methods for Air-source Heat Pump Systems
Zhileng xuebao, 2019 Air-source heat pumps have been widely used for room heating and air conditioning because of their stable performance and easy installation. The greatest performance limitation is the frosting and defrosting problem of the outdoor heat exchanger during ...
Shen Jiubing +4 more
doaj
The FEBS Journal, EarlyView.Using 1H NMR metabolomics, we measured polar and lipid metabolites from human blood neutrophils from people with frailty (n = 31, mean age 84Y), people with rheumatoid arthritis (n = 16, mean age 55Y), robust older (n = 24, mean age 66Y) and healthy younger people (n = 21, mean age 22Y).
Genna Ali Abdullah +5 more
wiley +1 more source