Results 111 to 120 of about 12,721 (256)
Research of Gravity Compensation Mechanism based on Non-circular Gear
Jixie chuandong, 2019 At present,most robots need to consume a large amount of energy to overcome their own gravity during operation. In order to reduce energy consumption and improve robot performance,a gravity compensation mechanism（ GCM） for a rotating joint manipulator is
Yang Yandong +3 more
doaj
Fisheries Oceanography, Volume 35, Issue 3, Page 397-412, May 2026.ABSTRACT Chinook salmon exhibit far‐flung and disparate population‐specific marine migrations that have made it difficult to assess their trophic ecology. In this study, we collected returning and resident subadult Fraser River Chinook salmon in 2018 and 2019 from population groups with different known run‐timings (spring, summer, and fall) and marine ...
Jacob E. Lerner, Brian P. V. Hunt
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Ecosystem resilience, the ability to recover from disturbances, is crucial for sustaining ecosystem health and functionality. Traditional greenness‐based resilience measures often overlook early physiological stress. Here, we use solar‐induced chlorophyll fluorescence (SIF), an indicator for photosynthesis, to assess global vegetation ...
Subhrasita Behera +4 more
wiley +1 more source
Advanced gearbox technology [PDF]
An advanced 13,000 HP, counterrotating (CR) gearbox was designed and successfully tested to provide a technology base for future designs of geared propfan propulsion systems for both commercial and military aircraft.
Anderson, N. E. +3 more
core +1 more source
Kinematic analysis of complex gear mechanisms [PDF]
, 2010 This paper presents a general kinematic analysis method for complex gear mechanisms. This approach involves the null-space of the adjacency matrix associated with the graph of the mechanism weighted by complex coecients.
Alazard, Daniel, Penaud, Julie
core
The Unseen Crisis of Sharks and Rays in Senegal
Ecology and Evolution, Volume 16, Issue 4, April 2026.This study presents a conservative quantitative assessment of shark and ray landings and trade in Senegal, revealing extensive exploitation of threatened species. Surveys at two major artisanal processing sites in the Casamance region recorded over 170,000 individuals, mostly rays, with nearly all biomass comprising species at risk of extinction, and ...
Rima W. Jabado +3 more
wiley +1 more source
A high torque capacity eddy current damper used as a rate limiting device for a large solar array deployment mechanism is discussed. The eddy current damper eliminates the problems associated with the outgassing or leaking of damping fluids.
Ellis, R. C., Fink, R. A., Rich, R. W.
core +1 more source
Learning Health Systems, Equity, and Bounded Justice: A Critical Scoping Review
Learning Health Systems, Volume 10, Issue 2, April 2026.ABSTRACT Introduction The science of learning health systems (LHSs) has expanded to include equity aims. However, efforts toward this end are nascent. The purpose of this study was to critically examine how equity has been discussed in LHS literature. Methods We conducted a critical scoping review informed by the bounded justice concept.
Vivetha Thambinathan +7 more
wiley +1 more source
Gear noise, vibration, and diagnostic studies at NASA Lewis Research Center [PDF]
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command are involved in a joint research program to advance the technology of rotorcraft transmissions.
Coy, John J. +3 more
core +1 more source
Applying the Ecological Trap Concept to Cetaceans
Marine Mammal Science, Volume 42, Issue 2, April 2026.ABSTRACT Wild animals may select poor‐quality habitats due to mismatches between perceived and actual habitat quality, creating ecological traps. Although well explored in terrestrial systems, this concept remains underutilized for marine species.
Stephane P. G. de Moura +2 more
wiley +1 more source