Results 21 to 30 of about 55,357 (266)

Mechanism and Optimization of Rotary Abrasive Waterjet for Well Tubing Cutting: Experimental and SPH-FEM Study

open access: yesJournal of Manufacturing and Materials Processing
Rotary abrasive waterjet (AWJ) cutting is an effective technique for industrial tube cutting and is widely used for oil and gas well tubing. This study presents a self-designed experimental apparatus for investigating the cutting performance of rotary ...
Can Cai   +7 more
doaj   +1 more source

Development of Pyro-Drive Jet Injector With Controllable Jet Pressure

open access: yesJournal of Pharmaceutical Sciences, 2019
Various jet injectors have been developed and used for the effective and efficient administration of drugs. Jet injections overcome the limitations of other drug delivery methods, such as ablation, iontophoresis, electroporation, sonophoresis, and microneedles, because jet injection is not limited by the diffusion rates of different drugs.
Hiroshi, Miyazaki   +4 more
openaire   +2 more sources

Study on Pressure Oscillation Characteristic of Steam Low-velocity Jet under Seawater Condition

open access: yesYuanzineng kexue jishu
In order to address the research gap in steam-seawater interactions and evaluate the feasibility of using seawater as a coolant in marine nuclear power systems, the pressure oscillation characteristics of steam low-velocity jet in seawater have been ...
Study on Pressure Oscillation Characteristic of Steam Low-velocity Jet under Seawater Condition
doaj   +1 more source

Research on Digital Monitoring Technology for Airport High-Pressure Rotary Jet Piles

open access: yesIEEE Access, 2023
The high-pressure rotary jet pile construction method has been widely used in airport projects, particularly in regions with soft soil foundations, such as coastal areas. The method’s primary aim is to establish a sound foundation bearing capacity.
Ke Tang   +6 more
doaj   +1 more source

Study on the optimal parameter matching model of rotary cutting coal-rock for abrasive water jet

open access: yesMeitan kexue jishu
As coal mining extends deeper, pure water jet technology is gradually unable to meet the demand for coal penetration enhancement under high stress and high coal rock strength conditions.
Jianping WEI   +4 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

Experimental Study on the Influence of Jet Dynamic Pressure Based on a New Confining Pressure Control System

open access: yesShiyou jixie
To address challenges such as low operating efficiency and poor descaling effect in jet stimulation operation of deep/ultra-deep wells, the influence of downhole environmental pressure (confining pressure) on jet dynamic pressure has been studied at home
Zhou Shijie   +5 more
doaj   +3 more sources

Experimental study of shock pressure and erosion characteristics of high‐pressure gas–liquid two‐phase jet: Exploration for improving coalbed methane extraction efficiency

open access: yesEnergy Science & Engineering, 2023
Coalbed methane extraction promotes energy exploitation and alleviates the greenhouse effect. This study aimed to analyze the technical potential of a high‐pressure gas–liquid two‐phase jet in increasing coalbed permeability and promoting coalbed methane
Longyong Shu   +4 more
doaj   +1 more source

Distinct Systemic Sclerosis Phenotypes Related to Ethnicity: An Opportunity to Personalize Care?

open access: yesArthritis Care &Research, EarlyView.
Objective The objective is to describe and compare demographic, clinical, and serological characteristics of patients with systemic sclerosis (SSc) according to ethnic background. Methods Participants enrolled in the Canadian Scleroderma Research Group cohort who self‐identified to a single ethnicity group were included.
Danick Goulet   +11 more
wiley   +1 more source

A Numerical Simulation of the Underwater Supersonic Gas Jet Evolution and Its Induced Noise

open access: yesApplied Sciences, 2023
To explore the complex flow field and noise characteristics of underwater high-speed gas jets, the mixture multiphase model, large eddy simulation method, and Ffowcs Williams–Hawking (FW–H) acoustic model were used for simulations, and the numerical ...
Wei Yu, Baoshou Wang, Chun Zhang
doaj   +1 more source

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