Results 131 to 140 of about 47,153 (310)
Polymer Engineering &Science, EarlyView.Schematic of the in‐line rheometry setup and the evaluation of three distinct modeling frameworks (semiempirical, viscoelastic, and EOS) to predict viscosity reduction in diluted polyethylene melts via time‐concentration superposition (Illustration generated via ChatGPT).
Ernst Georg Viehböck +5 more
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.
core +1 more source
The Age and Origin of Block Deposits in the Victorian Alps, Australia
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows +4 more
wiley +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.ICON outperforms COSMO in simulating a south foehn event in the Alpine Rhine Valley, with improved accuracy in temperature, wind speed, and foehn timing. This enhanced performance likely results from a more accurate representation of surface energy balance and gravity wave pattern on the lee side of the mountain.
Yue Tian +3 more
wiley +1 more source
Evaluation of a series hybird thrust bearing at DN values to three million. 1: Analysis and design [PDF]
The analysis and design are presented of a hybrid bearing consisting of a 150-mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of 86.4 mm (3.4 in.) and an inner radius of 71 mm (2.8 in ...
Eusepi, M., Gu, A., Winn, L. W.
core +1 more source
Enabling Under Ice Glider Operations: A Backseat Driver Approach
Journal of Field Robotics, EarlyView.ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang +12 more
wiley +1 more source
Orbital transfer vehicle oxygen turbopump technology. Volume 1: Design, fabrication, and hydrostatic bearing testing [PDF]
The design, fabrication, and initial testing of a rocket engine turbopump (TPA) for the delivery of high pressure liquid oxygen using hot oxygen for the turbine drive fluid are described.
Buckmann, P. S. +4 more
core +1 more source
Shape‐Memory Collagen/Silk‐Fibroin Scaffold for Dura Sealing and Skull Base Regeneration
Small, EarlyView.ABSTRACT When a skull base defect occurs, reconstruction is typically performed using a variety of autologous grafts, flaps, or synthetic materials. Failure to achieve appropriate management and closure can lead to serious consequences, such as cerebrospinal fluid (CSF) leakage and subsequent meningitis.
SooJung Chae +5 more
wiley +1 more source
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
core +1 more source