Results 41 to 50 of about 54,140 (300)

The role of gas movement between xylem conduits in embolism propagation based on modelling and flow-centrifuge experiments [PDF]

open access: yes
Chapter 1: The review ‘Gas Diffusion Kinetics in Relation to Embolism Formation and Propagation in Angiosperm Xylem: A Mini-Review’ provides an in-depth analysis of the development of models and methods addressing the relationship between gas diffusion ...
Silva, Luciano de Melo
core   +1 more source

The Upper Limit of the Separation Efficiency of a Gas Centrifuge [PDF]

open access: yes, 2013
A general theory of isotopes separation in a gas centrifuge based on a radial averaging method has been developed. The ultimate upper limit for a centrifuge separative power is expressed as a function of its external parameters.
Aleksandrov, O. E.
core   +1 more source

Use of Neural Network for the Simulation of a Gas Centrifuge [PDF]

open access: yesJournal of Nuclear Science and Technology, 1999
The prediction by a mathematical model of the separation of uranium isotopes using a gas centrifuge process is a hard task. The gas motion can be described by analytical or numerical solutions of the system of equations defined by the equation of continuity, the Navier-Stokes equation and the equation of energy.
S.C.P. MIGLIAVACCA   +2 more
openaire   +1 more source

APPLICABILITY OF GAS CENTRIFUGE TO ISOTOPE SEPARATION FOR ELEMENTS HEAVIER THAN TITANIUM [PDF]

open access: yes, 1956
The applicability of the gas centrifuge to the separation of the isotopes of the elements from Ti through U was examined. The suitable elsments were determined, and their effects on required centrifuge characteristics were surveyed.
Barker, J. J.
core   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Imaging Laser Absorption Spectroscopy of the metal-halide lamp in a centrifuge (1-10g) [PDF]

open access: yes, 2007
Imaging Laser Absorption Spectroscopy (ILAS) was performed on a metal-halide lamp under hyper-gravity conditions in a centrifuge (acceleration ranging from 1 to 10g).
Flikweert, A.J.   +3 more
core   +1 more source

Determining Dependency of Gas Centrifuge Separation Factor to Some Principals Parameters [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2011
For increasing isotopic separation power of a gas centrifuge, the axial circulating flows are created by mechanical or thermal drives. In this paper, the feed injection (mechanical drive) and the axial temperature gradient (thermal drive) are used to ...
A Noroozi   +4 more
doaj  

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Detection of outliers in a gas centrifuge experimental data [PDF]

open access: yes, 2005
Isotope separation with a gas centrifuge is a very complex process. Development and optimization of a gas centrifuge requires experimentation. These data contain experimental errors, and like other experimental data, there may be some gross errors, also ...
Nascimento, C. A. O.   +2 more
core  

Numerical simulation of the countercurrent flow in a gas centrifuge [PDF]

open access: yes, 1983
We present a finite difference method for the numerical simulation of the axisymmetric countercurrent flow in a gas centrifuge. A time-marching technique is used to relax an arbitrary initial condition to the desired steady-state solution.
Cloutman, L.D., Gentry, R.A.
core   +1 more source

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