Results 31 to 40 of about 172,917 (289)
Performance analysis of compliant cylindrical intershaft seal [PDF]
Science Progress, 2020 To improve the intershaft seal performance of the dual-rotor turbofan engine and extend the life of the intershaft seal, a compliant cylindrical aerodynamic intershaft seal structure is proposed, which avoids the problem of leakage increase after tooth wear of intershaft labyrinth seal.
Guoqiang Hou +3 more
openaire +2 more sources
Performance of Worn Labyrinth Seals [PDF]
Volume 1: Turbomachinery, 1994 The major sealing device between rotating and static aeroengine parts is still of labyrinth type. Nowadays the fins and the stator may be coated and the running conditions very often cause heavy rubs which leads to severe surface imperfections. This paper investigates the influence of rounded fins and worn coatings on the discharge ...
H. Zimmerman, A. Kammerer, K. H. Wolff
openaire +1 more source
A Review of Sealing Systems for Proton Exchange Membrane Fuel Cells
World Electric Vehicle JournalThe sealing technology of proton exchange membrane fuel cells (PEMFCs) is a critical factor in ensuring their performance, impacting driving safety and range efficiency.
Yi Wei +5 more
doaj +1 more source
FEBS Open Bio, EarlyView.Chemoresistance in bladder cancer: Macrophage recruitment associated with CXCL1, CXCL5 and CXCL8 expression is characteristic of Gemcitabine/Cisplatin (Gem/Cis) Non‐Responder tumors (right side) while Responder tumors did not show substantial tumor‐stromal crosstalk (left side). All biological icons are attributed to Bioicons: carcinoma, cancerous‐cell‐
Sophie Leypold +11 more
wiley +1 more source
Meitan kexue jishuThe influence of mechanical properties of the sealing material and grouting parameters on the coupling deformation of coal-sealing material in the sealing section of gas extraction borehole is still unclear, which is the main factor restricting the ...
Gang XU +3 more
doaj +1 more source
Preparation of a New Borehole Sealing Material of Coal Seam Water Infusion
Advances in Materials Science and Engineering, 2018 To improve the borehole sealing effect of coal seam water infusion, especially that of coal seam with low permeability and high rigidity, this study investigated the performance test optimization of two cement-based sealing materials.
Gang Wang +7 more
doaj +1 more source
Advances in Materials Science and Engineering, 2021 To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. The ultrafine
Xin Guo +3 more
doaj +1 more source
Study on a New Static Sealing Method and Sealing Performance Evaluation Model for PEMFC
World Electric Vehicle Journal, 2021 The long-term stability and durability of seals are critical for various instruments and types of equipment. For static sealing, an important sealing state, there are currently two representative sealing methods, namely, pre-compressing static sealing ...
Xiaoyu Huang +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Design, fabrication, and testing of micromachined silicone rubbermembrane valves [PDF]
, 1999 Technologies for fabricating silicone rubber membranes and integrating them with other processes on silicon wafers have been developed. Silicone rubber has been found to have exceptional mechanical properties including low modulus, high elongation, and ...
Grosjean, Charles +2 more
core +1 more source