Results 51 to 60 of about 323,480 (336)

Failure is a great teacher

open access: yesResearch and Humanities in Medical Education, 2021
I have been practising neurosurgery for the past fifteen years, and have acquired expertise in keyhole spinal surgery. In this narrative, I share my experience with a patient who had a prolapsed inter-vertebral disc, and who developed complications after
Rakeshkumar Luhana
doaj  

Generalized derivations with central values on lie ideals LIE IDEALS [PDF]

open access: yes, 2014
Let R be a prime ring of H a generalized derivation and L a noncentral lie ideal of R. We show that if l^sH(l)l^t in Z(R) for all lin2 L, where s, t> 0 are fixed integers, then H(x) = bx for some b in C, the extended centroid of R, or R satisfies S4 ...
Rahmani, Venus, Sahebi, Shervin
core  

Evidence for dust accumulation just outside the orbit of Venus [PDF]

open access: yes, 2007
To contribute to the knowledge of dynamics of interplanetary dust we are searching for structures in the spatial distribution of interplanetary dust near the orbit of Venus.
B. Moster   +12 more
core   +1 more source

Bio‐Based Wax Interfaces for Droplet Energy Harvesting at Fluoropolymer‐Like Output Levels

open access: yesAdvanced Science, EarlyView.
Replacing unsustainable fluorinated polymers in droplet‐based energy harvesters is usually limited by low power outputs, but carefully selected bio‐based polymers are capable of creating fluoropolymer‐like voltage outputs. Abstract Droplet impact and rebound on solid surfaces has emerged as a promising method for energy harvesting, typically ...
Behnam Kamare   +4 more
wiley   +1 more source

On the formation of the nightside ionospheric bulge in the Venus wake

open access: yesGeofísica Internacional, 1980
Se presenta un estudio de la distribución de la posición de la ionosfera del planeta Venus conforme a las observaciones hechas en el experimento de medición de temperatura de electrones con la sonda Pionero Venus.
H. Pérez de Tejada, L. H. Brace
doaj   +1 more source

EUV-dependence of Venusian dayside ionopause altitude: VEX and PVO observations

open access: yesEarth and Planetary Physics, 2020
The Venusian dayside ionosphere, similar to other planetary ionospheres, is produced primarily by ionization of its neutral upper atmosphere due to solar extreme ultraviolet (EUV) radiation. It has become clear that the expansion of the ionosphere may be
QianQian Han   +8 more
doaj   +1 more source

A Venus lander probe for manned flyby missions [PDF]

open access: yes, 1968
Venus lander probe for manned flyby ...
Chandeysson, P. L.
core   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

open access: yesAdvanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma   +4 more
wiley   +1 more source

A Wind Study of Venus’s Cloud Top: New Doppler Velocimetry Observations

open access: yesAtmosphere, 2020
At Venus’s cloud top, the circulation is dominated by the superroration, where zonal wind speed peaks at ∼100 ms−1, in the low-to-middle latitudes. The constraining of zonal and meridional circulations is essential to understanding the mechanisms driving
Ruben Gonçalves   +4 more
doaj   +1 more source

Venus before Venus Express

open access: yesPlanetary and Space Science, 2006
Abstract An overview is given of current knowledge and mysteries about the planet Venus, with emphasis on those aspects that are intended to be studied with the Venus Express mission following orbit insertion at the planet in March 2006.
openaire   +2 more sources

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