Results 121 to 130 of about 46,926 (269)
MetalsThis paper presents a new method for forming flanges in hollow parts. The process consists of an extrusion with two dies that move in an opposite direction to that of the punches.
Grzegorz Winiarski +4 more
doaj +1 more source
Integrating ecological feedbacks across scales and levels of organization
Ecography, EarlyView.In ecosystems, species interact in various ways with other species, and with their local environment. In addition, ecosystems are coupled in space by diverse types of flows. From these links connecting different ecological entities can emerge circular pathways of indirect effects: feedback loops.
Benoît Pichon +4 more
wiley +1 more source
Development of a 3D-Printed BLDC Motor and Controller for Robotic Applications
ActuatorsThis paper presents the design and experimental validation of a 3D-printed BLDC motor featuring a hollow-shaft rotor and nickel-reinforced stator. The rotor employs neodymium magnets to reduce inertia while maintaining torque density, and the stator ...
Sangsin Park
doaj +1 more source
Evaluation of Creep Life and Damage for AISI 304 Under Combined Tension/Torsion Multiaxial Loading
Fatigue &Fracture of Engineering Materials &Structures, EarlyView.ABSTRACT In the present study, to investigate the effects of temperature and principal stress ratio on the multiaxial creep rupture time of AISI 304 stainless steel, creep tests were conducted under various principal stress ratios at 650°C and 700°C.
Lei He, Takamoto Itoh, Noritake Hiyoshi
wiley +1 more source
Development concept for a small, split-core, heat-pipe-cooled nuclear reactor [PDF]
There have been two main deterrents to the development of semiportable nuclear reactors. One is the high development costs; the other is the inability to satisfy with assurance the questions of operational safety. This report shows how a split-core, heat-
Breitwieser, R. +2 more
core +1 more source
Journal of Anatomy, EarlyView.Geckos and anoline iguanid lizards are well‐known for their possession of adhesive toepads, which are generally regarded as being convergent structures. We show that the anatomical configuration of the foot in these two lineages differs markedly and that these differences likely relate to the contrasing ways they deploy their adhesive systems and ...
Anthony P. Russell +2 more
wiley +1 more source
Collapsible loop antenna for space vehicle Patent [PDF]
, 1963 Collapsible, space erectable loop antenna system for space ...
Mitchum, L. L., Jr., Wagner, H. R.
core +1 more source
Journal of Anatomy, EarlyView.This study investigates the morphology and osteo‐histology of the wing skeleton of the world's first gliding reptiles, showing how it differs from those of extant gliding lizards, yet is also convergently similar. These findings pave the way for future biomechanical studies on the gliding locomotion of these emblematic fossil animals. Abstract The Late
Valentin Buffa +7 more
wiley +1 more source
Space vehicle with artificial gravity and earth-like environment [PDF]
, 1973 A space vehicle adapted to provide an artificial gravity and earthlike atmospheric environment for occupants is disclosed. The vehicle comprises a cylindrically shaped, hollow pressure-tight body, one end of which is tapered from the largest diameter of ...
Gray, V. H.
core +1 more source
Journal of Prosthodontics, EarlyView.Abstract Purpose This study aimed to compare the dimensional and positional deviations of additively manufactured removable dies fabricated using two bio‐based resins and one conventional dental cast resin, while also evaluating these outcomes over a 4‐week period.
Mustafa Borga Dönmez +6 more
wiley +1 more source