Results 11 to 20 of about 3,513,001 (329)

Study on smoke sealing effectiveness of the air curtain in exit bifurcated tunnel fires

open access: yesCase Studies in Thermal Engineering
The feasibility of using a smoke prevention air curtain in the exit bifurcated tunnel was investigated through 1:10 scale model experiments. The results indicated that the jet velocity and heat release rate (HRR) significantly influenced the smoke ...
Xinling Lu   +3 more
doaj   +2 more sources

Evaluating the Sealing Effectiveness of a Caprock-Fault System for CO2-EOR Storage: A Case Study of the Shengli Oilfield

open access: yesGeofluids, 2017
An effective sealing system is crucial for CO2-EOR storage, and these sealing systems are typically composed of the caprocks and faults that surround a reservoir. Therefore, the sealing effectiveness of a caprock-fault system must be evaluated at various
Bing Bai   +4 more
doaj   +2 more sources

Sealing effectiveness of a novel NHS-POx based patch: experiments in a dynamic ex vivo porcine lung. [PDF]

open access: yesJ Thorac Dis, 2023
Background Sealants are used to prevent prolonged pulmonary air leakage (PAL) after lung resections (incidence 5.6–30%). However, clinical evidence to support sealant use is insufficient, with an unmet need for a more effective product.
Hermans BP   +8 more
europepmc   +2 more sources

Sealing effectiveness of fissure sealant bonded with universal adhesive systems on saliva-contaminated and noncontaminated enamel. [PDF]

open access: yesJ Clin Exp Dent, 2018
Background The effectiveness of sealants is dependent upon their adhesion to enamel surface. The aim of the study was to evaluate the sealing ability of a pit and fissure sealant used with a universal adhesive (etch-and-rinse vs.
Memarpour M   +3 more
europepmc   +2 more sources

Endwall contour design targeting on optimum aerodynamic efficiency of turbine stage and sealing effectiveness of rim seal

open access: yesProceedings of the Institution of mechanical engineers. Part A, journal of power and energy, 2022
Endwall contour optimization design utilized to improve the aerodynamic performance has impact on the flow field near rim seal, and it consequently affects the sealing performance.
Qingfeng Cong, Zhigang Li, Jun Li
semanticscholar   +1 more source

COMPARISON OF LOST CIRCULATION MATERIAL SEALING EFFECTIVENESS IN WATER-BASED AND OIL-BASED DRILLING FLUIDS AND UNDER CONDITIONS OF MECHANICAL SHEAR AND HIGH DIFFERENTIAL PRESSURES

open access: yesJournal of energy resources technology, 2022
A study was conducted to assess the performance of granular and fibrous lost circulation materials as preventative treatments and in remedial treatment of lost circulation in water-based and oil-based drilling fluids. For the preventative treatments, a
Karl Ronny Klungtvedt, A. Saasen
semanticscholar   +1 more source

Unsteady Numerical Investigation on the Sealing Effectiveness and Flow Field in Different Rim Seal Geometries

open access: yesAerospace, 2022
A rim seal is often used to prevent the ingress of high-temperature gas into the turbine disk cavity and protect the turbine disk from damage. Based on the overlapping rim seal (Seal-A), this paper proposes two more composite sealing structures (Seal-B ...
Qingcai Zhang   +3 more
semanticscholar   +1 more source

Correlating Time-Resolved Pressure Measurements With Rim Sealing Effectiveness for Real-Time Turbine Health Monitoring

open access: yesVolume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, 2021
Purge flow is bled from the upstream compressor and supplied to the under-platform region to prevent hot main gas path ingress that damages vulnerable under-platform hardware components.
Eric Deshong   +5 more
semanticscholar   +1 more source

Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis

open access: yesBMC Oral Health, 2021
Background Infiltration and sealing are micro-invasive treatments for arresting proximal non-cavitated caries lesions; however, their efficacies under different conditions remain unknown.
Yuanyuan Chen, Dongru Chen, Huancai Lin
doaj   +1 more source

Longitudinal study on the influence of Nd:YAG laser irradiation on microleakage associated of two filling techniques. [PDF]

open access: yes, 2009
Objective: This study investigates the effects of Nd:YAG laser irradiation on apical and coronal seals, when used prior to two root canal filling techniques.
De Moor, Roeland   +4 more
core   +1 more source

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