Results 141 to 150 of about 4,851 (264)
An Artificial Molecular Pump Powered by Light
Angewandte Chemie, Volume 138, Issue 23, 1 June 2026.A minimal rotaxane‐based supramolecular system functions as a light‐powered molecular pump, capturing macrocycles from solution and concentrating them within an intramolecular compartment. Repeated azobenzene photoisomerization modulates the binding and kinetic barriers of threading and shuttling, generating a photon‐driven energy ratchet that sustains
Federico Nicoli +7 more
wiley +2 more sources
Uniaxial Ratcheting Behaviour of SA 508 Steel [PDF]
, 2012 In piping materials, such as SA508 steel, used for pressurized heavy water reactors of nuclear power plants, ratcheting is manifested as a critical problem since it may alter the fatigue life of the said structure.
Kumar, Saurabh
core
Ratcheting testing of polytetrafluoroethylene (PTFE) under multiple-step compression
, 2018 Uniaxial stress-controlled ratcheting experiments of PTFE (polytetrafluoroethylene) under cyclic compressive loads with multiple load steps were performed.
Linwei Ma +4 more
core +1 more source
Scottish Journal of Political Economy, EarlyView.ABSTRACT This study considers consumers' environmental awareness of polluting firms' managerial delegation contracts and compares the effects of committed and time‐consistent emission tax policies. It reveals that when environmental performance (EP) incentives prevail, sales performance (SP) incentives depend on the emission tax type and competition ...
Lili Xu, Yuntong Yin, Sang‐Ho Lee
wiley +1 more source
Harmonic ratcheting for fast acceleration
, 2014 A major challenge in the design of rf cavities for the acceleration of medium-energy charged ions is the need to rapidly sweep the radio frequency over a large range.
N. Cook, S. Peggs, J. M. Brennan
core +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Ratcheting Behaviour of 42CrMo4 Steel under Different Heat Treatment Conditions [PDF]
, 2019 The phenomenon of ratcheting occurs under the influence of non-zero mean stress during cyclic loading operation, and it deteriorates low cycle fatigue life of engineering structures.
Ravi, Kreethi
core
Parasports for cerebral palsy: Thinking and ‘prescribing’ beyond the Paralympics
Developmental Medicine &Child Neurology, Volume 68, Issue 7, Page 896-902, July 2026.This narrative review synthesizes current evidence on parasport participation for individuals with cerebral palsy, highlighting key benefits, and providing sport‐specific adaptations that enhance accessibility of parasport. Abstract The landscape of care for individuals with cerebral palsy (CP) has evolved far beyond ‘fixing’ impairments toward a life ...
Julia E. Hanes +5 more
wiley +1 more source
JCMS: Journal of Common Market Studies, Volume 64, Issue 4, Page 1334-1358, July 2026.Abstract This study aims to provide a better understanding of how policy‐making changes when an issue is framed as an emergency. Literature on emergency politics provides different views on policy‐making changes resulting from emergency frames, where ordinary and exceptional policy‐making overlap in different ways.
Emma Leenders +3 more
wiley +1 more source
Applied SciencesThe present study intends to evaluate the ratcheting of 304 stainless steel samples at room temperature, subjected to various loading spectra and holding times through the use of the combined Ahmadzadeh–Varvani (A-V) kinematic and Lee–Zavrel (L-Z ...
Petar Jevtic, Ahmad Varvani-Farahani
doaj +1 more source