Results 21 to 30 of about 10,103 (260)

The influence of HIV infection and antiretroviral treatment on pulmonary function in individuals in an urban setting in sub-Saharan Africa

Southern African Journal of HIV Medicine, 2021
Background: With the roll-out of antiretroviral treatment (ART), the life expectancy of people with HIV and, hence, morbidity from non-communicable diseases, including pulmonary diseases, have increased.
Oda E. van den Berg, Erica J. Shaddock, Sarah L. Stacey, Charles Feldman, Roos E. Barth, Diederick E. Grobbee, Willem D.F. Venter, Kerstin Klipstein-Grobusch, Alinda G. Vos   +8 more
doaj   +1 more source

Investigation of the hydrodynamic model test of forced rolling for a barge using PIV

Zhongguo Jianchuan Yanjiu, 2017
In order to study the physical details of viscous flow in ship roll motions and improve the accuracy of ship roll damping numerical simulation, the application of the Particle Image Velocimetry (PIV) technique is investigated in model tests of forced ...
WANG Xiaoqiang, LIU Huaixi, MA Shan, GUO Chunyu   +3 more
doaj   +1 more source

On g-jitter effects on three-dimensional laminar thermal convection in low gravity

Mechanical Engineering Journal, 2015
We numerically study the forced-oscillation-frequency responses on the three-dimensional thermal convection in a cubic cavity heated from one wall and chilled from its opposite wall in the non-gravitational field at vibrational Rayleigh number (the ...
Katsuya HIRATA, Keisuke TATSUMOTO, Masaki NOBUHARA, Hirochika TANIGAWA   +3 more
doaj   +1 more source

Numerical Study on Wave Radiation by a Barge with Large Amplitudes and Frequencies

Journal of Marine Science and Engineering, 2020
A two-dimensional boundary element method is used to study the hydrodynamics of a single barge with prescribed motions of large amplitudes and high frequencies.
Yajie Li, Yun Long
doaj   +1 more source

Persistent Direction-Fixed Nystagmus Following Canalith Repositioning Maneuver for Horizontal Canal BPPV: A Case of Canalith Jam [PDF]

Clinical and Experimental Otorhinolaryngology, 2014
The authors report a 64-year-old man who developed persistent direction fixed nystagmus after a canalith repositioning maneuver for horizontal canal benign paroxysmal positional vertigo (HC-BPPV).
Young-Soo Chang, Jeesun Choi, Won-Ho Chung   +2 more
doaj   +1 more source

Rolling centrifuge repulsion Force Spacecraft [PDF]

Modern Electronic Technology, 2018
A Rolling Centrifugal Repulsion force UFO Introduction: Any object that rolls along a straight line will generate a centrifugal repulsive force that is away from the body being rolled, it is rolling centrifugal repulsive force. Utilizing this phenomenon, rolling the round ring along the edge of the UFO's disk will produce a constant lift, and then use ...
openaire   +1 more source

Hydraulic Integrated Interconnected Regenerative Suspension: Modeling and Characteristics Analysis

Micromachines, 2021
A novel suspension system, the hydraulic integrated interconnected regenerative suspension (HIIRS), has been proposed recently. This paper demonstrates the vibration and energy harvesting characteristics of the HIIRS.
Sijing Guo, Liang Chen, Xikai Wang, Junyi Zou, Sanbao Hu   +4 more
doaj   +1 more source

Study on the parametric roll characteristics of ships under bow oblique waves

Zhongguo Jianchuan Yanjiu
ObjectiveParametric roll is a common stability loss mode considered in the international maritime organization (IMO) second-generation intact stability framework, most often occurring in head or following seas.
Wuyang LIU, Chaobang YAO, Jiapeng ZHAO, Jiawei YU, Zhiguo ZHANG   +4 more
doaj   +1 more source

Nonlinear vibration and chaos of a moving flexible graphene smart electronic web

Results in Physics, 2020
Flexible graphene smart electronics are a kind of electronic device made of silver or other inorganic material and a flexible graphene web substrate. Because of their flexibility and excellent electronic properties, flexible graphene smart electronics ...
Shudi Ying, Jimei Wu, Yan Wang, Mingyue Shao, Jiajuan Qing   +4 more
doaj   +1 more source

A Coupled SVM-NODE Model for Efficient Prediction of Ship Roll Motion

Journal of Marine Science and Engineering
Traditional analyses of ship roll damping and added moment of inertia rely on free roll decay and forced roll tests, but acquiring linear (small angles) and nonlinear (large angles) relationships demands extensive computational cases and parameter ...
Yaxiong Zheng, Fei Peng, Zhanzhi Wang, Siwen Tian   +3 more
doaj   +1 more source