Results 31 to 40 of about 4,228,164 (98)

Neutron and Muon Studies of Spin Dynamics in Magnetic Systems [PDF]

In this thesis I present an investigation on the spin dynamics observed during moment localisation, non-ergodic magnetic phase transitions, and weak itinerant electron magnetism.
Ellis, Kevin John
core   +3 more sources

Enzyme activity below the dynamical transition at 220K [PDF]

, 1998
Enzyme activity requires the activation of anharmonic motions, such as jumps between potential energy wells. However, in general, the forms and time scales of the functionally important anharmonic dynamics coupled to motion along the reaction coordinate ...
Smith, Jeremy C., Ferrand, Michel, Finney, John L., Hery, Stephanie, Dunn, Rachel V., Daniel, Roy M., Ferrand M, Daniel RM, Hery S, Finney J L, Smith JC, Dunn R   +11 more
core   +1 more source

Development of a powerful UCN source at PNPI's WWR-M reactor [PDF]

EPJ Web of Conferences, 2019
The WWR-M reactor at PNPI is planned to be equipped with a high-flux source for ultracold neutrons (UCNs). The method of UCN production is based on neutron conversion in superfluid helium, exploiting the particular qualities of that quantum liquid.
Serebrov Anatolii, Liamkin Vitalii, Fomin Aleksey, Pusenkov Valeriy, Keshishev Konstantin, Boldarev Sergey, Prudnikov Dmitriy, Oprev Artem, Samodurov Oleg, Koptyuhov Artem, Ilatovskiy Vladimir   +10 more
doaj   +1 more source

Research on Neutronics Safety Parameters of the AP1000 Nuclear Reactor under Different Conditions

Energies, 2023
Changes in temperature during reactor operation may cause changes in physical parameters, leading to core overheating and accidents. It is essential to analyze and assess the safety parameters of the core under different operating conditions.
Xinyi Niu, Jianquan Liu, Zenghao Dong, Jie Wei, Wenlong Zhou   +4 more
doaj   +1 more source

Enzyme activity and flexibility at very low hydration [PDF]

, 2005
Recent measurements have demonstrated enzyme activity at hydrations as low as 3%. This raises the question of whether hydration-induced enzyme flexibility is important for activity. Here, to address this, picosecond dynamic neutron scattering experiments
Kurkal, Vandana, Smith, Jeremy C., Finney, John L., Dunn, Rachel V., Tehei, Moeava, Daniel, Roy M.   +5 more
core   +1 more source

Defect structure in yttrium, niobium and lead substituted bismuth oxide solid electrolytes [PDF]

, 2009
PhDBismuth oxide based electrolytes are well known for their high oxide ion conductivity at intermediate temperatures (300-700C). Indeed, the defect fluorite structured -phase of Bi2O3 shows the highest known oxide ion conductivity of any material ...
Liu, Xi
core   +2 more sources

Rapidly solidified highly alloyed Ni-based superalloy powders for multi-application: The faster the cooling, the softer?

Materials & Design
An investigation was conducted on gas atomised (GA) highly alloyed Ni-based superalloy powders utilised in diverse processes including additive manufacturing (AM), wide gap brazing (WGB) and hot isostatic pressing (HIP).
Liang Zheng, Tung Lik Lee, Dominik Daisenberger, Michael J Gorley, Zhou Li, Guoqing Zhang   +5 more
doaj   +1 more source

Impact of Temperature on Neutron Irradiation Failure-in-Time of Silicon and Silicon Carbide Power MOSFETs

Radiation, 2023
Accelerated neutron tests on silicon (Si) and silicon carbide (SiC) power MOSFETs at different temperatures and drain bias voltages were performed at the ChipIr facility (Didcot, UK).
Fabio Principato, Carlo Cazzaniga, Maria Kastriotou, Christopher Frost, Leonardo Abbene, Francesco Pintacuda   +5 more
doaj   +1 more source

Design and Performance Test of ENT2465 Long-Life Neutron Tube

He huaxue yu fangshe huaxue
The neutron tube is the core component of the controllable neutron source logging instrument. Its working stability, temperature resistance, neutron yield and other indicators have an important impact on the working performance of instrument. At present,
LIU Ze-wei, YUE Ai-zhong, LI Bing, ZHAO Jing-yi, JIANG Li-ming, LIU Jiong, MA Hui-sheng, ZHANG Xiao-lei, LU Ning, WANG Shu-sheng   +9 more
doaj   +1 more source

Bias Effects on g- and s-Factors in Westcott Convention

Applied Sciences, 2021
For accuracy improvement of neutron activation analysis and neutron capture cross sections, bias effects are investigated on g- and s-factors in the Westcott convention.
Hideo Harada
doaj   +1 more source