Results 71 to 80 of about 158,656 (309)
Space shuttle orbiter auxiliary power unit development challenges [PDF]
, 1985 When the flying spacecraft was approved for development, a power unit for the hydraulic system had to be developed. Unlike other systems on the orbiter, there was no precedent in earlier spacecraft for a hydraulic system nor for the power unit to drive ...
Lance, R., Weary, D.
core +1 more source
The reservoir network: A new network topology for district heating and cooling [PDF]
, 2020 Thermal district networks are effective solutions to substitute fossil fuels with renewable energy sources for heating and cooling. Moreover, thermal networking of buildings allows energy efficiency to be further increased.
Mennel, S +5 more
core
Advanced Materials Technologies, EarlyView.ABSTRACT Quantifying oral polymorphonuclear neutrophils (oPMNs) is a clinically validated approach for assessing periodontal inflammation. However, current methods, such as manual hemocytometry and flow cytometry, are time‐consuming (>3 h), require invasive sampling, and depend on staining and complex instrumentation, making them unsuitable for point ...
Mohsen Hassani +9 more
wiley +1 more source
Comparative Analysis of Power Losses in the Single-Flow LS-Systems with Pump and Valve Configuration
Механика машин, механизмов и материалов, 2018 The power losses in the single-flow hydraulic LS-systems with a pump configuration (using the variable displacement LS-pump) and with a valve configuration (using the fixed displacement pump) are investigated.
Aleksander A. Hinzburh +1 more
doaj
The operation of agricultural tractor with universal ecological oil
Research in Agricultural Engineering, 2013 This contribution presents the results of the research into the characteristics of ecological oil labelled MOL Farm UTTO Synt in the tractor operating conditions.
J. Kosiba +4 more
doaj +1 more source
A new method of vibration analysis for the diagnosis of impeller in a centrifugal pump [PDF]
, 2014 Centrifugal pumps are widely used in many important industries such as power generation plants, chemical processes and petroleum refiners. The condition monitoring of centrifugal pumps is highly regarded by many researchers and users to minimize ...
Abdulrahman, Albraik +5 more
core
Detection of hydraulic phenomena in francis turbines with different sensors [PDF]
, 2019 Nowadays, hydropower is demanded to provide flexibility and fast response into the electrical grid in order to compensate the non-constant electricity generation of other renewable sources.
Egusquiza Estévez, Eduard +4 more
core +2 more sources
Micro Elastofluidics for Tuneable Droplet Merging
Advanced Materials Technologies, EarlyView.This technical paper provides a proof of concept of fully flexible and stretchable microfluidic technology for tuneable droplet mixing and merging. The phenomenon is justified through theoretical, numerical and experimental studies. ABSTRACT Droplet microfluidics enables precise handling of discrete fluid volumes at the microscale, with broad ...
Uditha Roshan +8 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This work presents a fully synthetic, 3D‐printed dynamic heart model with left‐side anatomy featuring sutured mitral valve chordae tendineae analogs, embedded actuators for physiologic wall contraction, and customized flexible pressure sensors for the left ventricle.
Alejandro Guillen Obando +7 more
wiley +1 more source
A New Hydraulic Speed Regulation Scheme: Valve-Pump Parallel Variable Mode Control
IEEE Access, 2018 To improve the comprehensive performances of hydraulic speed regulation systems, this paper proposes and develops a new control scheme, valve-pump parallel variable mode control, which can adopt different control modes in different speed regulation ...
Haigang Ding, Jiyun Zhao, Quanmin Zhu
doaj +1 more source