Results 21 to 30 of about 659,767 (315)

The sweet life: diet sugar concentration influences paracellular glucose absorption [PDF]

open access: yes, 2008
Small birds and bats face strong selection pressure to digest food rapidly in order to reduce digesta mass carried during flight. One mechanism is rapid absorption of a high proportion of glucose via the paracellular pathway (transfer between epithelial ...
McWhorter, T.   +18 more
core   +2 more sources

Comparison of the characteristic energy of precipitating electrons derived from ground-based and DMSP satellite data [PDF]

open access: yes, 2005
International audienceEnergy maps are important for ionosphere-magnetosphere coupling studies, because quantitative determination of field-aligned currents requires knowledge of the conductances and their spatial gradients.
M. Ashrafi   +5 more
core   +1 more source

Numerical and experimental studies on compressive behavior of Gyroid lattice cylindrical shells

open access: yesMaterials & Design, 2020
In this paper, Gyroid lattice cylindrical shell (LCS) specimens were designed by a newly proposed mapping methodology and were fabricated by selective laser melting (SLM) technology. Their energy absorption and deformation modes were investigated through
Yongzhen Wang   +8 more
doaj   +1 more source

Adsorption and Absorption Energies of Hydrogen with Palladium

open access: yesThe Journal of Physical Chemistry C, 2022
Thermal recombinative desorption rates of HD on Pd(111) and Pd(332) are reported from transient kinetic experiments performed between 523 and 1023 K. A detailed kinetic model accurately describes the competition between recombination of surface-adsorbed hydrogen and deuterium atoms and their diffusion into the bulk.
Schwarzer, Michael   +6 more
openaire   +4 more sources

High temperature optical absorption investigation into the electronic transitions in sol–gel derived C12A7 thin films [PDF]

open access: yes, 2015
Optical absorption into 6 mm thick sol–gel derived films, annealed at 1300 °C of 12CaO·7Al2O3 calcium aluminate binary compound on MgO〈100〉 single crystal substrates was studied at temperatures ranging from room temperature to 300 °C.
Feizi, E   +3 more
core   +1 more source

Energy-absorption characteristics of composite C-channels with different flange widths under axial compression

open access: yesJournal of Aeronautical Materials, 2023
Quasi-static axial compression experiments were conducted on the composite thin-walled C-channels with different flange widths. The axial compression failure modes and failure mechanisms were analyzed through CT scanning,and the effects of different ...
MOU Haolei   +4 more
doaj   +1 more source

Architected lattices with adaptive energy absorption [PDF]

open access: yesExtreme Mechanics Letters, 2019
Energy absorbing materials, like foams used in protective equipment, are able to undergo large deformations under low stresses, reducing the incoming stress wave below an injury or damage threshold. They are typically effective in absorbing energy through plastic deformation or fragmentation.
Yifan Wang   +5 more
openaire   +3 more sources

A Study on the Energy Absorption Performance of Mine Grooved Conical Tube Energy Absorption Components

open access: yesBuildings
When rockbursts occur, hydraulic support is prone to impact failure, which leads to severe casualties and economic losses. To improve the performance of hydraulic support structures under impact loading, a grooved conical tube is designed as an energy ...
Ziyang Li   +3 more
doaj   +1 more source

RESEARCH ON AXIAL IMPACT ENERGY ABSORPTION CHARACTERISTICS OF METAL SPHERICAL SHELL FILLED RETICULATED TUBE

open access: yesJixie qiangdu, 2023
In this study, the concept of energy absorption and collision avoidance of metal tubes in the transportation field is combined with a spherical reticulated shell structure with excellent vibration absorption and impact resistance in the construction ...
ZHENG ShiWei, WU Fei, ZHANG ZhengRong
doaj  

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