Results 11 to 20 of about 6,107,983 (353)

Optimization of Manufacturing Processes by Reducing the Costs of Tools and Equipment on Hydraulically Operated High-Pressure Technological Lines [PDF]

open access: yesMATEC Web of Conferences, 2022
Most technological manufacturing lines include hydraulically operated stationary tools, devices and equipment. During a manufacturing cycle, there are phases, usually short, in which part of the hydraulic cylinders of the drive systems concerned, with ...
Popescu Teodor Costinel   +5 more
doaj   +1 more source

Plasma Assisted Re-Ignition of Aeroengines under High Altitude Conditions

open access: yesAerospace, 2022
Re-ignition of aeroengines under high altitude conditions is of great importance to the safety and use of lean-burn flame. This study is focused on the experimental and numerical characterization of flow dynamics and flame re-ignition in a rectangular ...
Ghazanfar Mehdi   +2 more
doaj   +1 more source

Dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions

open access: yesNihon Kikai Gakkai ronbunshu, 2023
To investigate the dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions, the deflagration experiments were conducted in a closed combustion chamber. The dynamic behavior of hydrogen flames was
Toshiyuki KATSUMI   +4 more
doaj   +1 more source

Low pressure solar thermal converter [PDF]

open access: yes, 2009
The current development of solar power converters with air as working fluid focuses mostly on concentrating collectors combined with hot-air engines, and on very low temperature solar tower concepts.
Muller, Gerald
core   +1 more source

Laminar Burning Speed of Aviation Kerosene at Low Pressures

open access: yesEnergies, 2022
Aero-engine combustors may experience extreme low pressures in the case of an in-flight shutdown, which makes the study of aviation kerosene flame propagation characteristics at low pressures important.
Jian Liu   +4 more
doaj   +1 more source

Filamentation in low pressure conditions

open access: yesScientific Reports, 2022
AbstractFilamentation is favorable for many long-range outdoor laser applications, some of which require propagation to or at high altitudes. Understanding how the filamentation process and filament properties are impacted by the low pressure conditions present at high altitudes is essential in designing effective applications.
Jessica Peña   +2 more
openaire   +3 more sources

Drying Characteristics and Analysis of Heat and Mass Transfer of Industrial Iron Powder at Low Temperature and Low Pressure

open access: yesZhileng xuebao, 2021
In this study, a low-temperature and low-pressure heat pump drying device was built to explore the drying effect of industrial iron powder at different low pressures and analyze the heat and mass transfer in the low-temperature and low-pressure drying ...
Zhang Ruhang   +3 more
doaj   +2 more sources

The application of low pressure storage to maintain the quality of zucchinis [PDF]

open access: yes, 2017
Zucchini (Cucurbita pepo var. cylindrica) were stored at low pressure (4 kPa) at 10°C at 100% relative humidity for 11 days. Fruit quality was examined upon removal and after being transferred to normal atmosphere (101 kPa) at 20°C for three days ...
Bowyer, Michael C.   +5 more
core   +2 more sources

Increased pain sensitivity in low blood pressure. [PDF]

open access: yes, 2008
. There is broad evidence for a functional interaction between the cardiovascular and pain regulatory systems. One result of this interaction is the reduced sensitivity to acute pain in individuals with elevated blood pressure, which has been established
Duschek, Stefan   +2 more
core   +1 more source

Experimental investigations of opening leaks in a welded seam of a closed container under thermal and acoustic influences [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
To conduct experimental investigations of the drying process of a closed container, taking into account the opening of a leak channel in a weld, an experimental research stand, an experimental container and experimental samples with model leaks of ...
I. Yu. Lesnyak
doaj   +1 more source

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