Results 71 to 80 of about 6,087,560 (207)

Modeling Scavenging for a Hydraulic Free-Piston Engine [PDF]

, 2020
The hydraulic free-piston engine at the University of Minnesota offers a solution to improve the hydraulic efficiency and reduce emission output of off-road vehicles.
Davies, Nathan
core   +1 more source

A novel method for determining the resistivity of compressed superconducting materials

Matter and Radiation at Extremes
The measurement of resistivity in a compressed material within a diamond anvil cell presents significant challenges. The high-pressure experimental setup makes it difficult to directly measure the size changes induced by pressure in the three ...
Liling Sun, Qi Wu, Shu Cai, Yang Ding, Ho-kwang Mao   +4 more
doaj   +1 more source

Pressure Dependence of the Raman Spectrum, Lattice Parameters and Superconducting Critical Temperature of MgB2 [PDF]

arXiv, 2001
We have observed a strongly broadened Raman band of MgB2 that shows anomalously large pressure dependence of its frequency. This band and its pressure dependence can be interpreted as the E2g zone center phonon, which is strongly anharmonic because of coupling to electronic excitations.
arxiv  

Optimization of slender wings for center-of-pressure shift due to change in Mach number [PDF]

It is observed that the center of pressure on a wing shifts as the Mach number is changed. Such shifts are in general undesirable and are sometimes compensated for by actively shifting the center of gravity of the aircraft or by using active stability ...
Andersen, Carl M.
core   +1 more source

Cooperativity in light scattering by cold atoms

, 2012
A cloud of cold N two-level atoms driven by a resonant laser beam shows cooperative effects both in the scattered radiation field and in the radiation pressure force acting on the cloud center-of-mass.
Bachelard, Romain, Bienaime, Tom, Kaiser, Robin, Piovella, Nicola   +3 more
core   +1 more source

Suitability of Reduced Pressure Center‐Pivots

Journal of Irrigation and Drainage Engineering, 1984
Selection criteria for reduced pressure center‐pivot irrigation systems are developed. An analysis of the combined effects of the application rate characteristics or center‐pivot irrigation systems and the Soil Conservation Service (SCS) soil intake family curves is used to determine the maximum depth of water which could be applied per irrigation for ...
openaire   +2 more sources

Brightening triplet excitons enable high-performance white-light emission in organic small molecules via integrating n–π*/π–π* transitions

Nature Communications
Luminescent materials that simultaneously embody bright singlet and triplet excitons hold great potential in optoelectronics, signage, and information encryption.
Qing Yang, Xinyi Yang, Yixuan Wang, Yunfan Fei, Fang Li, Haiyan Zheng, Kuo Li, Yibo Han, Takanori Hattori, Pinwen Zhu, Shuaiqiang Zhao, Leiming Fang, Xuyuan Hou, Zhaodong Liu, Bing Yang, Bo Zou   +15 more
doaj   +1 more source

Center of pressure based segment inertial parameters validation

PLOS ONE, 2017
By proposing efficient methods for estimating Body Segment Inertial Parameters' (BSIP) estimation and validating them with a force plate, it is possible to improve the inverse dynamic computations that are necessary in multiple research areas. Until today a variety of studies have been conducted to improve BSIP estimation but to our knowledge a real ...
Clint Hansen, Nasser Rezzoug, Philippe Gorce, Brice Isableu, Gentiane Venture   +4 more
openaire   +5 more sources

A distinctive HPHT platform with different types of large-volume press subsystems at SECUF

Matter and Radiation at Extremes
Large-volume presses (LVPs) providing large volumes, liquid media, deformation capability, jump compression, and in situ measurements are in great demand for high-pressure research, particularly in the fields of geoscience, condensed matter physics ...
Yufei Ge, Shuailing Ma, Cun You, Kuo Hu, Chuang Liu, Yixuan Wang, Xinglin Wang, Xinyang Li, Hongyu Li, Qiang Tao, Shuqing Jiang, Lu Wang, Hu Tang, Di Yao, Zhi He, Xinyi Yang, Zhaodong Liu, Qiang Zhou, Pinwen Zhu, Bo Zou, Bingbing Liu, Tian Cui   +21 more
doaj   +1 more source

Mechanisms underlying center of pressure displacements in obese subjects during quiet stance

Journal of NeuroEngineering and Rehabilitation, 2011
Objective the aim of this study was to assess whether reduced balance capacity in obese subjects is secondary to altered sensory information. Design cross sectional study.
Priano Lorenzo, Vismara Luca, Bigoni Matteo, Tacchini Elena, Menegoni Francesco, Galli Manuela, Capodaglio Paolo   +6 more
doaj   +1 more source