Results 61 to 70 of about 47,153 (310)

Antenna grout replacement system [PDF]

, 1983
An epoxy grout suitable for use in mounting and positioning bearing runner plates used in hydrostatic bearing assemblies for rotatably mounting large radio telescope structures to stationary support pedestals is described.
Mcclung, C. E.
core   +1 more source

Cells Dynamically Adapt Their Nuclear Volumes and Proliferation Rates During Single to Multicellular Transitions

Advanced Science, EarlyView.
It is currently not well understood how cells regulate basic properties, e.g., volume and mechanics within dense multicellular environments like tumors. Here, we show that different cell types of cancer and also normal cells largely decrease their nuclear and cellular volumes in emerging cell clusters and that this is partly driven by cell cycle shifts.
Vaibhav Mahajan, Keshav Gajendra Babu, Markus Mukenhirn, Antje Garside, Vinita Ajit Kini, Trishla Adhikari, Timon Beck, Byung Ho Lee, Kyoohyun Kim, Carsten Werner, Raimund Schlüßler, Alf Honigmann, Sebastian Aland, Anna Verena Taubenberger   +13 more
wiley   +1 more source

Support apparatus for dynamic testing Patent [PDF]

, 1967
Hydraulic support equipment for full scale dynamic testing of large rocket vehicle under free flight ...
Angele, W., Vonpragenau, G. L.
core   +1 more source

Mass‐Transport–Engineered CCM Architecture Employing MPL‐Free Carbon Paper and Graphene‐Coated Ni Foam Channels for High‐Temperature PEM Fuel Cells

Advanced Science, EarlyView.
A CCM‐based architectural strategy is introduced for high‐temperature PEM fuel cells, enabling MPL‐free carbon paper gas diffusion layers via decal‐transfer processing. By co‐engineering the CCM, GDL, and a G‐foam flow field, oxygen transport is enhanced while phosphoric‐acid leakage is suppressed, resulting in high power density and stable operation ...
Seongmin Cho, Songi Oh, Mingyu Kim, Jung Hwa Choi, Sunjae Hwang, Ji‐Hoon Jang, Segeun Jang   +6 more
wiley   +1 more source

Development of rotary table grinding machine for large diameter Si wafers (2nd report: Performance investigation of wheel spindle designed to govern infeed motion)

Nihon Kikai Gakkai ronbunshu, 2017
Si wafer diameter tends to be increased from 300 mm to 450 mm in order to increase semiconductor device productivity. To this end, the authors developed a rotary grinding machine with high stiffness, equipped with water hydrostatic bearings.
Jumpei KUSUYAMA, Ayumu HONDA, Shintaro IWAHASHI, Takayuki KITAJIMA, Akinori YUI, Toshihiro ITO, Xiaodong LU, Alexander H. SLOCUM   +7 more
doaj   +1 more source

Performance of gas-lubricated cruciform-mounted tilting-pad journal bearings and a damped flexibly mounted spiral-groove thrust bearing [PDF]

A test program was conducted to determine the performance characteristics of gas-lubricated cruciform-mounted tilting-pad journal bearings and a damped spiral-groove thrust bearing designed for the Brayton cycle rotating unit (BRU).
Ream, L. W.
core   +2 more sources

Hydraulic support for dynamic testing Patent [PDF]

, 1967
Hydraulic support apparatus for dynamic testing of space vehicles under near-free flight ...
Vonpragenau, G. L.
core   +1 more source

Unraveling the Power of Disorder: A Bioinspired Cuttlebone Structure With Superior Strength, Energy Absorption and Isotropy

Advanced Science, EarlyView.
Cuttlebone‐inspired architected metamaterials introduce controlled structural disorder to simultaneously enhance strength, energy absorption, and compressive stability. Tunable disorder suppresses shear anisotropy, outperforms periodic lattices, and establishes discrete randomness as a robust route to high‐performance lightweight mechanical ...
Zengqin Shi, Peng Jiang, Xiaoyan Zhu, Suyun Li, Wenqing Wang, Tian Zhao, Rujie He, Ying Li   +7 more
wiley   +1 more source

Research on Parameter Identification Method for Hydrostatic Guideway Joint Based on Frequency Response Function

Chemical Engineering Transactions, 2018
Research the application of hydrostatic guideway in the field of modern ultra-precision machining technology. Optimize and analyze the structure design of machinable hydrostatic guideway with CCOS to obtain an optimized design scheme.
Pengfei Wu, Feng Gao
doaj   +1 more source

Hybrid bearings for LH2 and LO2 turbopumps [PDF]

Hybrid combinations of hydrostatic and ball bearings can improve bearing performance for liquid hydrogen and liquid oxygen turbopumps. Analytic studies were conducted to optimize hybrid bearing designs for the SSME-type turbopump conditions.
Butner, M. F., Lee, F. C.
core   +1 more source