Results 131 to 140 of about 46,952 (306)
Structural Concrete, EarlyView.Abstract Precast reinforced concrete segmental linings are frequently used in modern tunneling. In these linings, the longitudinal joints typically have a reduced contact cross‐section and thus often govern the design, particularly in tunnels under high hydrostatic pressure or crossing squeezing or swelling ground with correspondingly high ...
Fabian Morger +2 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Despite the importance of flowers to plant fitness, it remains unclear whether flowers display ecophysiological strategies and how floral traits are associated with leaf economic traits.
Dario C. Paiva, Adam B. Roddy
wiley +1 more source
LubricantsThe force conditions experienced by spacecraft and astronauts in space are vastly different from those in Earth’s gravitational environment, hence it is necessary to conduct adequate micro-low-gravity environment simulation tests on the ground before ...
Libin Zang +8 more
doaj +1 more source
Design and evaluation of a 3 million DN series-hybrid thrust bearing [PDF]
The bearing, consisting of a 150-mm ball bearing and a centrifugally actuated, conical, fluid-film bearing, was fatigue tested. Test conditions were representative of a mainshaft ball bearing in a gas turbine engine operating at maximum thrust load to ...
Eusepi, M., Scibbe, H. W., Winn, L. W.
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Dual clearance squeeze film damper [PDF]
, 1985 A dual clearance hydrodynamic liquid squeeze film damper for a gas turbine engine is described. Under normal operating conditions, the device functions as a conventional squeeze film damper, using only one of its oil films.
Fleming, D. P.
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Artificial Organs, EarlyView.ABSTRACT Extracorporeal life support (ECLS) technology has witnessed remarkable advancements during the last decades. However, further research and development of devices are required to increase, for example, performance‐efficiency, hemocompatibility, and long‐term stability.
Jutta Arens +41 more
wiley +1 more source
Progress update of NASA's free-piston Stirling space power converter technology project [PDF]
A progress update is presented of the NASA LeRC Free-Piston Stirling Space Power Converter Technology Project. This work is being conducted under NASA's Civil Space Technology Initiative (CSTI).
Alger, Donald +2 more
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Nonresonant support facilitates vibration testing of structures [PDF]
, 1965 An essentially frictionless four-point support system which utilizes bearings and pistons allows for determination of vibration frequencies of large structures. Retardation of vertical or horizontal motion is due to the viscous damping by the hydrostatic
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Boreas, EarlyView.Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt +4 more
wiley +1 more source
Mechanobiology in Stem Cell‐Based Bioprinting
Cell Proliferation, EarlyView.Mechanobiology in stem cell‐based bioprinting is an emerging field that bridges the mechanical conditions of the bioprinting process with the regulation of stem cell behaviour for engineering living tissues. Stresses encountered during bioprinting, together with the mechanical properties of bioinks, play a critical role in regulating stem cell ...
Supeng Ding, Tiankun Liu, Rui Yao
wiley +1 more source