Results 141 to 150 of about 172,917 (289)
Study on dynamic sealing performance of combined sealing structure of telescopic type of downhole robot by using HTHP coupling method. [PDF]
Sci Prog, 2021 Zhao J +7 more
europepmc +1 more source
Brush seal performance measurement system
, 2009 Brush seals are rapidly replacing conventional labyrinth seals in turbomachinery applications. Upon pressure application, seal stiffness increases drastically due to frictional bristle interlocking. Operating stiffness is critical to determine seal wear life. Typically, seal stiffness is measured by pressing a curved shoe to brush bore.
Aksoy, Serdar +2 more
openaire +1 more source
Explosively activated egress area [PDF]
, 1983 A lightweight, add on structure which employs linear shaped pyrotechnic charges to smoothly cut an airframe along an egress area periphery is provided.
Bailey, J. W., Bement, L. J.
core +1 more source
Nonelastomeric Rod Seals for Advanced Hydraulic Systems [PDF]
Advanced high temperature hydraulic system rod sealing requirements can be met by using seals made of nonelastomeric (plastic) materials in applications where elastomers do not have adequate life.
Hady, W. F., Waterman, A. W.
core +2 more sources
Advanced Functional Materials, EarlyView.A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou +8 more
wiley +1 more source
Generating Cell Surface Nucleated Hydrogels with an Artificial Membrane‐Binding Transglutaminase
Advanced Functional Materials, EarlyView.Cell‐based therapies require advanced strategies to enhance cell delivery and bioactivity. Cell membrane engineering offers an avenue to impart new functions to delivered cells to boost their viability and function. Here, an artificial membrane‐binding transglutaminase is generated and biophysically characterized.
Rosalia Cuahtecontzi Delint +6 more
wiley +1 more source
Design considerations in mechanical face seals for improved performance. 2: Lubrication [PDF]
The importance of sealing technology in our industrial, chemical-oriented society in regard to maintenance and environmental contamination is pointed out. It is stated that seal performance (leakage, life) is directly related to seal lubrication. Current
Greiner, H. F., Ludwig, L. P.
core +1 more source
EVALUATION PAVEMENT DISTRESSES USING PAVEMENT CONDITION INDEX [PDF]
, 2011 Pavement deterioration is resulted by both environmental and structural causes. It is difficult to maintain the road on the same specification that was owned at the opening and problems start to appear represented in the pavement cracks, holes and ...
kushardjoko, wahyudi +2 more
core
Advanced Functional Materials, EarlyView.Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani +13 more
wiley +1 more source
Some considerations of the performance of two honeycomb gas path seal material systems [PDF]
A standard Hastelloy-X honeycomb material and a pack aluminide coated honeycomb material were evaluated as to their performance as labyrinth seal materials for aircraft gas turbine engines.
Bill, R. C., Shiembob, L. T.
core +1 more source