Results 1 to 10 of about 2,634,553 (326)

Omnidirectional Continuous Movement Method of Dual-Arm Robot in a Space Station

open access: yesSensors, 2023
The burgeoning complexity of space missions has amplified the research focus on robots that are capable of assisting astronauts in accomplishing tasks within space stations.
Ziqiang Zhang   +7 more
doaj   +1 more source

Real-Time Kinematic Imagery-Based Automated Levelness Assessment System for Land Leveling

open access: yesAgriculture, 2023
Many cropping systems, notably for rice or soybean production, rely largely on arable land levelness. In this study, an automated levelness assessment system (ALAS) for evaluating lowland levelness is proposed.
Senlin Guan   +4 more
doaj   +1 more source

Nonlinear Dynamic Analysis of Rotor-Bearing-Pedestal Systems With Multiple Fit Clearances

open access: yesIEEE Access, 2020
Dynamic analysis of a rotor-bearing-pedestal system with multiple bearing clearances is conducted in this study. Firstly, Jones-Harris method is used to deduce the equivalent nonlinear support stiffness of angular contact high-speed ball bearing with ...
Dengyun Wu   +6 more
doaj   +1 more source

How to improve superlubricity performance of diketone at steel interface: Effects of oxygen gas

open access: yesFriction, 2022
Achievement of steady and reliable super-low friction at the steel/steel contact interface, one of the most tribological systems applied for mechanical moving parts, is of importance for prolonging machine lifetime and reducing energy consumption.
Yuanyuan Jiang   +8 more
doaj   +1 more source

El Museo de los Desplazados

open access: yesPerifèria: Revista de Recerca i Formació en Antropologia, 2013
Museo de los Desplazados es una plataforma de colaboración que surge como conclusión del proyecto “Gentrificación no es un nombre de señora”, en el que se analiza el papel de la cultura en los procesos de gentrificación.
Left Hand Rotation
doaj   +1 more source

Effect of Black Garlic Extract on Blood Glucose, Lipid Profile, and SGPT-SGOT of Wistar Rats Diabetes Mellitus Model

open access: yesMajalah Kedokteran Bandung, 2019
Dyslipidemia is one of the complications of diabetes mellitus (DM) that can lead to elevated total cholesterol, TG, and LDL. Increased SGOT-SGPT indicates damage of hepatic cells.
Gita Sekar Prihanti   +4 more
doaj   +1 more source

Atraumatic shoulder instability: patient characteristics, comorbidities, and disability

open access: yesJSES International, 2021
Background: Atraumatic shoulder instability of the shoulder is well described, and numerous extrinsic factors have been identified as having a negative influence on long-term shoulder function, including age, sex, smoking, and workers' compensation ...
Moritz Lebe, MD, MSc, MRCS   +5 more
doaj   +1 more source

Museo de los desplazados. Archivo de procesos de gentrificación

open access: yesRevistArquis, 2016
El Museo de los Desplazados es una plataforma de colaboración creada por el Colectivo Left Hand Rotation que surge como conclusión del proyecto - taller “Gentrificación No es un Nombre de Señora” en el que se analiza el papel de la cultura en los ...
Colectivo Left Hand Rotation
doaj   +1 more source

Rotation and differential rotation of active Kepler stars [PDF]

open access: yes, 2013
We present rotation periods for thousands of active stars in the Kepler field derived from Q3 data. In most cases a second period close to the rotation period was detected, which we interpreted as surface differential rotation (DR).
Basri, Gibor   +2 more
core   +2 more sources

Modeling and Experimental Study on the Micro-Vibration Transmission of a Control Moment Gyro

open access: yesIEEE Access, 2019
A control moment gyro (CMG) is the main source of vibration disturbance in the spacecraft. This paper presents a vibration mathematical model with 18 degrees of freedom by Lagrange energy method, for solving the problem that the transmission mechanism ...
Dengyun Wu   +6 more
doaj   +1 more source

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