Results 51 to 60 of about 238,378 (313)

Study on microstructure and properties of pure tantalum TIG joints

open access: yesHanjie xuebao
A study on the microstructure, mechanical properties, and heat treatment process of pure tantalum TIG joints was conducted. Industrial computed tomography (CT), OM, and SEM were used to characterize the microstructure of the joints, and a microhardness ...
Chao YAN   +3 more
doaj   +1 more source

Modelling of Nanoparticle Distribution in a Spherical Tumour during and Following Local Injection

open access: yesPharmaceutics, 2022
Radio-sensitizing nanoparticles are a potential method to increase the damage caused to cancerous cells during the course of radiotherapy. The distribution of these particles in a given targeted tumour is a relevant factor in determining the efficacy of ...
George Caddy   +3 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Towards an interval particle transport monte carlo method [PDF]

open access: yes, 2019
Monte Carlo has for a long time been the high fidelity model of choice in particle transport. The current state of the art in uncertainty propagation in particle transport is the so called Total Monte Carlo (TMC) method, a method which relies on the ...
Patelli, E   +5 more
core   +1 more source

Modeling the transport and anisotropy of energetic electrons in solar flares

open access: yesFrontiers in Astronomy and Space Sciences
Transport of energetic electrons in the flare loop is important to understanding nonthermal emissions in solar flares. In this work, we model the propagation of electrons by numerically solving the particle transport equation which includes the physics ...
Xiangliang Kong   +5 more
doaj   +1 more source

Numerical simulation of the radiation field parameters of different composite anode targets

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2023
Bremsstrahlung radiation can produce pulsed X-ray, and the energy spectra and conversion efficiencies of X-ray produced by such radiation are related to the electron beam energy, target material, and structure of this material.
LI Jinxi   +3 more
doaj   +1 more source

Viscophoretic particle transport

open access: yes, 2022
Viscosity is a fundamental property of liquids and determines the diffusivity of suspended particles. A gradient in viscosity leads to a gradient in diffusivity, yet it is unknown whether such a gradient can lead to directed transport of particles. In this work, we generate a steep, stable viscosity gradient in a microfluidic channel and image the ...
Khandan, Vahid   +7 more
openaire   +2 more sources

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Particle transport from the lower respiratory tract.

open access: yes, 1987
This study shows that particles are present on the broncho-alveolar epithelium predominantly phagocytized in macrophages which will be cleared eventually by particle transport mechanisms.
Kreyling, W.G., Schumann, G.
core   +1 more source

Effect of Slide Valve Gap Surface Roughness on Particle Transport Properties

open access: yesAerospace
Fuel electro-hydraulic servo valves are core components in the fuel control system of aero-engines, and their performance directly affects thrust regulation and power output precision.
Jin Zhang   +6 more
doaj   +1 more source

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