Results 51 to 60 of about 1,844,938 (269)

Enhanced age-hardening in a lean Mg-Al-Ca-Mn alloy by trace silver addition

open access: yesMaterials Research Letters
Promoting the precipitation of Guinier-Preston (G.P.) zones in fast-extruded Mg-Al-Ca-Mn alloys could enhance the age-hardenability, which remains a significant challenge.
Zhao-Yuan Meng   +7 more
doaj   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Effect of trace germanium on microstructure and quenching sensitivity of 7056 aluminum alloy

open access: yesCailiao gongcheng, 2019
The effect of trace Ge on the microstructure and quenching sensitivity of 7056 aluminum alloy was studied by mechanical tensile and end quenching experiments, combined with some analysis methods such as metallographic observation, hardness test ...
LI Wei   +5 more
doaj   +1 more source

On the trace of branching random walks [PDF]

open access: yes, 2010
We study branching random walks on Cayley graphs. A first result is that the trace of a transient branching random walk on a Cayley graph is a.s. transient for the simple random walk. In addition, it has a.s.
Benjamini, Itai, Müller, Sebastian
core  

Distances of qubit density matrices on Bloch sphere

open access: yes, 2011
We recall the Einstein velocity addition on the open unit ball $\B$ of $\R^{3}$ and its algebraic structure, called the Einstein gyrogroup. We establish an isomorphism between the Einstein gyrogroup on $\B$ and the set of all qubit density matrices ...
Einstein A.   +3 more
core   +1 more source

Investigating Sintering Mechanisms for Additive Manufacturing of Conductive Traces

open access: yesAmerican Journal of Engineering and Applied Sciences, 2018
Additive Manufacturing (AM) processes enable the fabrication of miniaturized and flexible devices on complex geometries. This paper explores a hybrid additive manufacturing technology that integrates micro-extrusion and PICO-jetting methods. Conductive slurries and colloidal inks were optimized for their rheological properties to aid their precise ...
Jasmine McKenzie, Salil Desai
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Trace-distance measure of coherence

open access: yes, 2016
We show that trace distance measure of coherence is a strong monotone for all qubit and, so called, $X$ states. An expression for the trace distance coherence for all pure states and a semi definite program for arbitrary states is provided.
Lewenstein, Maciej   +2 more
core   +1 more source

Traces and Extensions of Bounded Divergence-Measure Fields on Rough Open Sets

open access: yes, 2020
We prove that an open set $\Omega \subset \mathbb{R}^n$ can be approximated by smooth sets of uniformly bounded perimeter from the interior if and only if the open set $\Omega$ satisfies \begin{align*} &\qquad \qquad\qquad\qquad\qquad\qquad\qquad ...
Chen, Gui-Qiang G.   +2 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

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