Results 21 to 30 of about 1,092 (255)
Limits to compression with cascaded quadratic soliton compressors
Optics Express, 2008 We study cascaded quadratic soliton compressors and address the physical mechanisms that limit the compression. A nonlocal model is derived, and the nonlocal response is shown to have an additional oscillatory component in the nonstationary regime when the group-velocity mismatch (GVM) is strong. This inhibits efficient compression.
Bache, M. +4 more
openaire +5 more sources
Comparative Study on Modal Decomposition Methods of Unsteady Separated Flow in Compressor Cascade
Xibei Gongye Daxue Xuebao, 2020 The present work investigated the vortex structure and fluctuation frequency characteristics generated by boundary layer separation of a high-load compressor cascade using modal decomposition methods.
doaj +1 more source
Performance Experiment of R290/CO2 Cascade Refrigeration System
Zhileng xuebao, 2007 Performance experiments of R290/CO2 cascade refrigeration system were conducted. The performance of a cascade refrigeration system having a high temperature cycle using R290 as refrigerant and a CO2 based low temperature cycle was compared with that of a
宁静红, 李惠宇, 彭苗
doaj +2 more sources
Case Studies in Thermal Engineering, 2022 The cascade refrigeration system with two-stage compression (CRST) with R1150/R717 as the refrigerant group was studied to replace the three-stage cascade refrigeration system (TCRS) with R1150/R41/R717 as the refrigerant group, aiming to improve the ...
Zhili Sun, Yi’an Wang
doaj +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
Study on various hot-gas defrosting configurations for CO2-NH3 cascade deep freezer
International Journal of Air-Conditioning and RefrigerationFour hot-gas bypass defrosting configurations for CO2-NH3 cascade blast freezer for application in fish processing firm are numerically investigated.
B. S. Arun +9 more
doaj +1 more source
Effect of Blade Slot Positioning Close to Blade Root on the Performance of Highly Loaded Helium Compressor [PDF]
Journal of Applied Fluid MechanicsThe helium compressor has the inherent characteristics of a lower single-stage pressure ratio and a higher number of stages than an air compressor. The highly loaded design method effectively addressed the compressibility issue of the helium compressor ...
Y. Fan +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Inlet Flow Angle Determination of Transonic Compressor Cascades [PDF]
Journal of Turbomachinery, 1991 Tests of transonic compressor cascades require special measuring techniques to determine the inlet flow angle around sonic inlet flow conditions. One of the main requirements for these methods is the ability to adjust the inlet flow angle during the test to a prescribed value.
Steinert, W., Fuchs, R., Starken, H.
openaire +3 more sources
The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp +4 more
wiley +1 more source