Results 1 to 10 of about 1,099,154 (258)

Posterior vitreous detachment rate following intravitreal dexamethasone injection [PDF]

International Journal of Ophthalmology, 2019
AIM: To determine whether intravitreal dexamethasone (DEX) implant induces posterior vitreous detachment or not. METHODS: We retrospectively reviewed 810 eyes of 405 patients who underwent intravitreal DEX implantation due to macular edema caused by ...
Atilla Alpay
doaj   +1 more source

Near Wellbore Hydraulic Fracture Propagation from Perforations in Tight Rocks: The Roles of Fracturing Fluid Viscosity and Injection Rate

Energies, 2017
Hydraulic fracture initiation and near wellbore propagation is governed by complex failure mechanisms, especially in cased perforated wellbores. Various parameters affect such mechanisms, including fracturing fluid viscosity and injection rate.
Seyed Hassan Fallahzadeh, Md Mofazzal Hossain, Ashton James Cornwell, Vamegh Rasouli   +3 more
doaj   +1 more source

Optimal Injection Parameters for Enhancing Coalbed Methane Recovery: A Simulation Study from the Shizhuang Block, Qinshui Basin, China

Geofluids, 2022
The injection of N2 into coal reservoir has great potential in improving recovery of coalbed methane (CBM). In this study, a numerical model was established based on the GEM component model to evaluate the influences of different N2 injection parameters (
Du Liu, Longyong Shu, Yanbin Wang, Zhonggang Huo, Shihu Zhao, Xing Xiong   +5 more
doaj   +1 more source

A Study of Spill Control Characteristics of JP-8 and Conventional Diesel Fuel with a Common Rail Direct Injection System

Energies, 2017
Diversification of energy sources is a key task for decreasing environmental impacts and global emission of gases. JP-8, a fuel derived from natural gas, coal, biomass, and waste plastics, is a bright prospect.
Seomoon Yang, Hoonyoung Moon, Changhee Lee   +2 more
doaj   +1 more source

Steroid injections in musculoskeletal conditions and COVID infection rates: What is the impact on positive rates following the injection?

Physiotherapy, 2022
AbstractBackground and AimTherapeutic glucocorticosteroid injections are commonly utilised to manage musculoskeletal (MSK) complaints. Following the SARS‐CoV‐2 pandemic, national guidelines advised against their use due to potential immunosuppressant effects. The aim of the study was to determine whether steroid injections for MSK conditions impacts on
Lethbridge, Daniel, O'Shea, Simon
openaire   +3 more sources

Technology and application of controlling injection rate and increasing imbibition effect to enhance oil recovery in fractured sandstone reservoirs with ultra-low permeability： A case study of Ordos Basin

Youqi dizhi yu caishoulu
The pore-throat of the fractured sandstone reservoir matrix with ultra-low permeability is fine， and micro fractures are developed， which provides favorable conditions for the role of imbibition and oil displacement； surfactant solution can change the ...
WANG Xiangzeng, WANG Xiaofeng, LIANG Quansheng, DANG Hailong, HOU Binchi, CUI Pengxing, GAO Tao   +6 more
doaj   +1 more source

Numerical Investigation of Influence of In-Situ Stress Ratio, Injection Rate and Fluid Viscosity on Hydraulic Fracture Propagation Using a Distinct Element Approach

Energies, 2016
Numerical simulation is very useful for understanding the hydraulic fracturing mechanism. In this paper, we simulate the hydraulic fracturing using the distinct element approach, to investigate the effect of some critical parameters on hydraulic ...
Bo Zhang, Xiao Li, Zhaobin Zhang, Yanfang Wu, Yusong Wu, Yu Wang   +5 more
doaj   +1 more source

A novel method for the quantitative characterization of the simultaneous plasticizing and filling performance in ultrasonic plasticization micro injection molding

Materials & Design, 2021
A novel method is proposed for the quantitative characterization of the unique simultaneous plasticizing and filling phenomenon in ultrasonic plasticization micro-injection molding (UPMIM). The injection rate is redefined as the mass flow rate during the
Yang Zou, Wangqing Wu, Xiaotian Zhou, Guomeng Wei, Bingyan Jiang   +4 more
doaj   +1 more source

OPTIMIZATION OF THE FORMATION ACID FRACTURING AT THE FACILITIES OF OJSC «TATNEFT»

Известия высших учебных заведений: Нефть и газ, 2015
The authors analyzed the process parameters of the formation acid hydraulic fracturing (FAHF) operations performing taking into account the additional production achieved.
I. I. Mannanov, L. I. Garipova
doaj   +1 more source

Pneumatic and Optical Characterization and Optimization of Hydrogen Injectors for Internal Combustion Engine Application

Frontiers in Mechanical Engineering, 2022
To achieve future emission targets for internal combustion engines, the use of hydrogen gas generated by renewable energy sources (known as “green” hydrogen) instead of fossil fuels plays a key role in the development of new combustion-based engine ...
Philipp Rolke, D. Broja, A. Fink, J. Maaß, O. Nett   +4 more
doaj   +1 more source