Results 111 to 120 of about 9,857 (246)
Results of NASA/Army transmission research [PDF]
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an interest in advancing the technology for helicopter propulsion systems. In particular, that portion of the program that applies to the drive train and its
Coe, Harold H. +2 more
core +1 more source
Advanced Intelligent Discovery, Volume 2, Issue 2, April 2026.Combining machine learning and probabilistic statistical learning is a powerful way to discover and design new materials. A variety of machine learning approaches can be used to identify promising candidates for target applications, and causal inference can help identify potential ways to make them a reality.
Jonathan Y. C. Ting, Amanda S. Barnard
wiley +1 more source
Unraveling Chronic Pain: From Mechanisms and Risks to Diagnosis and Treatment
MedComm, Volume 7, Issue 4, April 2026.Chronic pain arises through distinct molecular pathways categorized into nociceptive, neuropathic, and nociplastic types. Nociceptive pain begins with TRP channel activation in peripheral nociceptors, signaling via Aδ‐ and C‐fibers through the spinal dorsal horn and spinothalamic tracts to the brain, regulated by descending inhibition and involving ...
Xiaofeng Dai +3 more
wiley +1 more source
Load capacity of hardened gear wheels machined with cubic boron nitride (CBN) wedges
Metalurgija, 2013 The paper presents the results of exploitation examination of gear wheels with hardened bearing surface. The gears under investigation have been finish machined by the method elaborated by the author, with a tool possessing wedges made of CBN (cubic ...
R. Talar, A. Stoić
doaj
Evaluation of a high performance, fixed-ratio, traction drive [PDF]
, 1983 A test program was initiated to evaluate the key operational and performance factors associated with the Nasvytis multiroller concept. Two sets of Nasvytis drives, each of slightly geometry, were parametrically tested on a back to back test stand ...
Anderson, N. E. +2 more
core +1 more source
Structural Concrete, Volume 27, Issue 2, Page 1364-1382, April 2026.Abstract An analytical framework suited for the analysis of shear‐critical ultra‐high performance concrete (UHPC) members is presented. The numerical methodology utilizes a nonlinear finite element analysis formulation integrated with an artificial neural network (ANN) that characterizes the UHPC tension response based on its mix design. In addition, a
Amjad Diab, Anca Ferche
wiley +1 more source
Higher Education Quarterly, Volume 80, Issue 2, April 2026.ABSTRACT This paper investigates how education and training institutions in Portugal fund internationalisation, moving beyond the traditional focus on higher education. Employing a convergent parallel mixed‐methods design through a nationwide survey and interviews, it reveals a two‐tiered system shaped by funding availability and diversity.
Cristina Sin +6 more
wiley +1 more source
Experimental testing of prototype face gears for helicopter transmissions [PDF]
An experimental program to test the feasibility of using face gears in a high-speed and high-power environment was conducted. Four face gear sets were tested, two sets at a time, in a closed-loop test stand at pinion rotational speeds to 19,100 rpm and ...
Bossler, R., Handschuh, R., Lewicki, D.
core +1 more source
Residual stress in case hardened steel gears [PDF]
, 2018 Aerospace gear components are required to demonstrate excellent load carrying and endurance characteristics. Case hardened steels are often utilised for these parts. During the manufacturing process of case hardened steel gears residual stresses are developed.
Easton, David +3 more
openaire
Applied SciencesStudying the factors affecting machining accuracy, surface quality, and machining efficiency in the powerful honing machining process system, analyzing the basic law between various errors and machining quality, exploring the method of evaluating the ...
Jie Su +6 more
doaj +1 more source