Results 91 to 100 of about 47,153 (310)

Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds

The Anatomical Record, EarlyView.
Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen, Christian de Muizon, Olivier Lambert, Giovanni Bianucci, Antonia R. Kaffler, Matthew R. McCurry, Alexandra Houssaye, Rafael M. Varas‐Malca, Rodolfo Salas‐Gismondi, Oliver Hampe, Eli Amson   +10 more
wiley   +1 more source

The Structural Optimum of Hydrostatic Thrust Bearings to Avoid Cavitation

Lubricants
Cavitation of oil film is harmful for all kinds of hydrostatic bearings, so the method to avoid cavitation in hydrostatic thrust bearings by optimizing the structure of bearings is proposed in this study. Based on the pressure distribution expressions of
Huaiqing Lu, Chunlin Li, Haibo Liang, Zhuxin Tian   +3 more
doaj   +1 more source

Study of membrane restrictors in hydrostatic bearing

Advances in Mechanical Engineering, 2018
Hydrostatic guides or bearings are very important crucial components in precision mechanical system. First, the article selects the structural parameters of the standard design film restrictor with regard to hydrostatic bearing.
Dyi-Cheng Chen, Ming-Fei Chen, Chih-Hsuan Pan, Jun-Yan Pan   +3 more
doaj   +1 more source

Development of rotary table grinding machine for large diameter Si wafers (1st report: Performance investigation of water hydrostatic rotary table)

Nihon Kikai Gakkai ronbunshu, 2016
Increasing of Si wafer diameter from φ300 mm to φ450 mm is required to enhance productivity of semiconductor devices. The authors developed a high stiff rotary grinding machine, which consists of a rotary table system and a wheel spindle system.
Jumpei KUSUYAMA, Ayumu HONDA, Takayuki KITAJIMA, Go OKAHATA, Akinori YUI, Toshihiro ITO, A. H. SLOCUM   +6 more
doaj   +1 more source

Thermal expansion of CaFe2As2: effect of cobalt doping and post-growth thermal treatment [PDF]

, 2013
We report thermal expansion measurements on Ca(Fe_(1-x)Co_x)_2As_2 single crystals with different thermal treatment, with samples chosen to represent four different ground states observed in this family.
Bud'ko, Sergey, Canfield, Paul, Canfield, Paul, Ran, Sheng   +3 more
core   +4 more sources

Marine silicon for biomedical sustainability

BMEMat, EarlyView.
Schematic illustrating marine silicon for biomedical engineering. Abstract Despite momentous divergence from oceanic origin, human beings and marine organisms exhibit elemental homology through silicon utilization. Notably, silicon serves as a critical constituent in multiple biomedical processes.
Yahui Han, Zhibo Yang, Wei Xia, Chengtie Wu   +3 more
wiley   +1 more source

An Experimental Study on the Influence of Spring Support Structures and Hydrostatic Recess Areas on the Characteristics of Hybrid Tilting Pad Bearings Lubricated by High-Pressure CO₂

Lubricants
The purpose of this study is to explore the influence of different spring support structures and hydrostatic recess areas on the characteristics of hybrid tilting pad bearings lubricated by high-pressure CO2 to promote the development of high-pressure ...
Xiangyu Li, Lingfeng Huang, Shuxiang Yi, Xiaojing Wang, Xiaohan Zhang, Kunpeng Cheng   +5 more
doaj   +1 more source

Asymmetric Supply Type Hydrostatic Journal Gas Bearings to Support Large Load Rotors

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Rotating machinerys have problems at bearings to support a rotor such as seismic ACROSS transmitters. The ACROSS ( Accurately Controlled Routinely Operated Signal System ) is a new technical method to detect subtle changes in the physical state of Earth ...
Tomohiko ISE, Hiroshi MIYATAKE, Toshihiko ASAMI   +2 more
doaj   +1 more source

SSME Long-life Bearings [PDF]

Hybrid hydrostatic/ball bearings for LH2 and LO2 service in turbopumps were studied as a means of improving speed and life capabilities. Four hybrid bearing configurations were designed with emphasis on achieving maximum stiffness and damping.
Butner, M. F., Murphy, B. T.
core   +1 more source

A dynamics-driven approach to precision machines design for micro-manufacturing and its implementation perspectives [PDF]

, 2008
Precision machines are essential elements in fabricating high quality micro products or micro features and directly affect the machining accuracy, repeatability and efficiency.
Chen C. Y., Deiab I. M., Raja P. V., Rao S. B., Slocum A. H., Stephenson D. J.   +5 more
core   +1 more source