Results 41 to 50 of about 163,984 (309)

NV716 acts as an envelope-active adjuvant that enhances antibiotic accumulation in Pseudomonas aeruginosa

open access: yesnpj Antimicrobials and Resistance
Treatment of Gram-negative infections remains challenging due to limited compound penetration and the presence of efflux mechanisms. Pseudomonas aeruginosa, in particular, exhibits strong intrinsic resistance, leaving few effective therapeutic options ...
Margot Draveny   +13 more
doaj   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Crossover from $\beta$- to $\alpha$-relaxation in cooperative facilitation dynamics

open access: yes, 2015
$\beta$ and $\alpha$ relaxation processes are dynamical scaling regimes of glassy systems occurring on two separate time scales which both diverge as the glass state is approached. We study here the crossover scaling from $\beta$- to $\alpha$- relaxation
Sellitto, Mauro
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

open access: yesAdvanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono   +6 more
wiley   +1 more source

APLICAÇÃO DA FÓRMULA DE RUDOE NA DETERMINAÇÃO DE LONGAS TRAJETÓRIAS DE ONDAS SÍSMICAS SUPERFICIAIS

open access: yesRevista Brasileira de Cartografia, 2009
Um algoritmo é proposto para o cálculo acurado das distâncias pela fórmula de Rudoe, em compartimentos de grade geodésica percorrida por trajetórias de ondas sísmicas superficiais.
Newton P. Santos, Jorge L. de Souza
doaj  

VOI-aware MCTS

open access: yes, 2012
UCT, a state-of-the art algorithm for Monte Carlo tree search (MCTS) in games and Markov decision processes, is based on UCB1, a sampling policy for the Multi-armed Bandit problem (MAB) that minimizes the cumulative regret. However, search differs from MAB in that in MCTS it is usually only the final “arm pull” (the actual move ...
Tolpin, David, Shimony, Solomon Eyal
openaire   +2 more sources

MCTS-Based Automated Negotiation Agent [PDF]

open access: yes, 2019
This paper introduces a new negotiating agent model for automated negotiation. We focus on applications without time pressure with multidi-mensional negotiation on both continuous and discrete domains. The agent bidding strategy relies on Monte Carlo Tree Search, which is a trendy method since it has been used with success on games with high branching ...
Buron, Cédric   +2 more
openaire   +2 more sources

Tests of mode coupling theory in a simple model for two-component miscible polymer blends [PDF]

open access: yes, 2007
We present molecular dynamics simulations on the structural relaxation of a simple bead-spring model for polymer blends. The introduction of a different monomer size induces a large time scale separation for the dynamics of the two components. Simulation
A J Moreno   +15 more
core   +2 more sources

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

open access: yesAdvanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco   +7 more
wiley   +1 more source

Estudo de usuários on line

open access: yesRDBCI: Revista Digital de Biblioteconomia e Ciência da Informação, 2005
Trata-se de um estudo de usuários baseado na perspectiva da responsabilidade social da Ciência da Informação, considerando um agregado de informação disponível na Internet.
Bruno Macedo Nathansohn   +1 more
doaj   +1 more source

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