Results 81 to 90 of about 1,426 (304)

SYSTEM DIVES WITH GAS MIXTURES BASED ON HELIUM

Annals: Series on engineering sciences (Academy of Romanian Scientists)
Helium, being very inert from a biochemical point of view and having a density seven times lower than that of nitrogen, allows for superior performance by eliminating the effects of narcosis and breathing difficulties. By developing decompression tables
Mircea DEGERATU, Sergiu IONIȚĂ
doaj   +1 more source

Development of proportional electromagnet for water hydraulics

, 2018
Vodna hidravlika je pri vse večji ekološki osveščenosti danes nepogrešljiv vir tehnologije. Kljub manjšemu zaostanku vodne hidravlike za oljno je še kako pomemben razvoj novih ključnih komponent za njeno uporabo. V zaključni nalogi smo izboljšali koncept
Omejc, Matic
core  

Preparation and Performance Evaluation of a Self‐Generated Particle Plugging Agent Based on Thermosetting Resin

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A thermosetting in situ curing resin microsphere system has been developed. It has controllable phase transition time and particle size. This system addresses the current challenges of low strength, shear susceptibility, and short phase transition time in polymer microsphere blockers and thermoplastic particle blockers.
Baolei Jiao, Lifeng Chen, Minghao Xue, Xuemin Yan, Jiamin Zhang, Feifan Liu   +5 more
wiley   +1 more source

DIVING USING HYDROGEN-BASED RESPIRATORY GAS MIXTURES

Annals: Series on engineering sciences (Academy of Romanian Scientists)
When diving to depths of over 200 m, there are two factors that limit the effectiveness of divers using helium-based mixtures, namely: High Pressure Nervous Syndrome (HPNS) due to the neurological effects of pressure and ventilatory limitations due to ...
Mircea DEGERATU, Sergiu IONIȚĂ
doaj   +1 more source

Application of Fractional Flow Theory for Analytical Modeling of Surfactant Flooding, Polymer Flooding, and Surfactant/Polymer Flooding for Chemical Enhanced Oil Recovery

, 2020
Fractional flow theory still serves as a powerful tool for validation of numerical reservoir models, understanding of the mechanisms, and interpretation of transport behavior in porous media during the Chemical-Enhanced Oil Recovery (CEOR) process.
Lei Ding, Qianhui Wu, Lei Zhang, Dominique Guérillot   +3 more
core   +1 more source

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Micro-hydraulics system design

, 2009
One of the main aims of presented bachelor's thesis is an implementation of hydraulic circuit by micro-hydraulics system. Bachelor's thesis has three main part. First part deals with hydraulic distribution and selection of acceptable devices of hydraulic
Pitaš, Martin
core  

Characteristics of Medium Resistivity Response During the Water–Oil Displacement Process

Oil leakage during the processes of extraction, storage, and transportation poses a significant challenge due to the complex nature of pollution caused by frequent fluctuations in groundwater levels and variations in the water–oil interface.
Huan Zhu, Guizhang Zhao, Jie An, Hongli Zhang   +3 more
core   +1 more source

Assessment of Hydrate Prediction Software for MEG–Water–NaCl Systems

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study evaluates the performance of three industry‐standard simulation tools—Aspen HYSYS (V14), Multiflash (V7.5), and OLGA (V2024.1)—by comparing predicted hydrate dissociation temperatures with experimental data obtained from a PVT sapphire cell.
Carys M. Bloomfield, Chi M. Phan, Ammar Al Helal   +2 more
wiley   +1 more source

Real values of local resistance coefficients during water flow through a pipe aerator with filling [PDF]

Journal of Water and Land Development
The paper presents the results of studies on local resistance coefficients (ζ). The study used pipe aerators with filling made according to the Polish patent PL235924.
Marek Kalenik, Marek Chalecki, Piotr Wichowski, Adam Kiczko, Krzysztof Chmielowski, Martyna Świętochowska, Joanna Gwoździej-Mazur   +6 more
doaj   +1 more source