Results 41 to 50 of about 7,630 (187)

On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal [PDF]

open access: yes, 2009
The study of the climate in the past and the climate change in mainland Portugal using geothermal data has started in 1996. Reconstruction of ground surface temperature (GST) history from temperature logs measured in a 200 m deep borehole located 5 km ...
Correia, Antonio
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Sustainability of Transient Kinetic Regimes and Origins of Death [PDF]

open access: yesScientific Reports, 2016
AbstractIt is generally recognized that a distinguishing feature of life is its peculiar capability to avoid equilibration. The origin of this capability and its evolution along the timeline of abiogenesis is not yet understood. We propose to study an analog of this phenomenon that could emerge in non-biological systems.
Dmitry Yu. Zubarev, Leonardo A. Pachón
openaire   +4 more sources

Calcium Handling Machinery and Sarcomere Assembly are Impaired Through Multipronged Mechanisms in Cancer Cytokine‐Induced Cachexia

open access: yesJournal of Cachexia, Sarcopenia and Muscle, Volume 16, Issue 2, April 2025.
Abstract Background Cachexia is a severe form of muscle wasting disorder particularly observed in patients with advanced cancer. The absence of effective strategies to ameliorate cachexia indicates our poor understanding of the mechanisms of cachexia. By employing system‐wide approaches, we investigated molecular mechanisms underlying cancer secreted ...
Luis Vincens Gand   +11 more
wiley   +1 more source

Estimating the turnover number in enzyme kinetic reactions using transient and stationary state data

open access: yesBrazilian Journal of Pharmaceutical Sciences, 2009
Substrate and product concentration data obtained by simulating enzyme-substrate reaction rate equations were used to test two proposed kinetic rate constant estimation techniques in this study.
Sibel Uludag-Demirer   +2 more
doaj   +1 more source

Análise térmica de um forno de resistência ao fogo [PDF]

open access: yes, 2009
A classificação de produtos de construção em relação ao comportamento ao fogo é determinada pelas normas vigentes, utilizando um forno com curvas de incêndio normalizadas, como são exemplo as curvas de padrão 150 834, ASTM E119, hidrocarbonetos, etc ...
Mesquita, L.M.R.   +2 more
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Physiological role of potassium channels in mammalian germ cell differentiation, maturation, and capacitation

open access: yesAndrology, Volume 13, Issue 2, Page 184-201, February 2025.
Abstract Background Ion channels are essential for differentiation and maturation of germ cells, and even for fertilization in mammals. Different types of potassium channels have been identified, which are grouped into voltage‐gated channels (Kv), ligand‐gated channels (Kligand), inwardly rectifying channels (Kir), and tandem pore domain channels (K2P).
Ariadna Delgado‐Bermúdez   +3 more
wiley   +1 more source

Ecofisiologia do estresse luminoso em espécies de Cattleya Lindl. [PDF]

open access: yes, 2012
Cattleya Lindl. (Orchidaceae) são ervas epífitas atuantes na regulação do equilíbrio dinâmico da biodiversidade neotropical e na manutenção de baixa entropia nos remanescentes florestais.
PINHEIRO, C. L.
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Fast and slow domino regimes in transient network dynamics [PDF]

open access: yesPhysical Review E, 2017
It is well known that the addition of noise to a multistable dynamical system can induce random transitions from one stable state to another. For low noise, the times between transitions have an exponential tail and Kramers' formula gives an expression for the mean escape time in the asymptotic limit. If a number of multistable systems are coupled into
Ashwin, P   +2 more
openaire   +4 more sources

Von Ionen zu Kristallen: Neue Einblicke die nicht‐klassische Keimbildung von Calciumsulfat

open access: yesAngewandte Chemie, Volume 136, Issue 51, December 16, 2024.
Calciumsulfat ist ein Mineral von erheblicher Bedeutung für verschiedene industrielle und geochemische Prozesse. In der vorliegenden Arbeit wurde die Bildung von kristallinem Calciumsulfat‐Dihydrat (Gips) aus wässrigen Lösungen durch die Anwendung einer Reihe komplementärer Charakterisierungsmethoden im Detail aufgeklärt.
Matthias Kellermeier   +7 more
wiley   +1 more source

Bancada experimental para estudos de combustão catalítica em meios porosos [PDF]

open access: yes, 2014
TCC(graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Bacharelado Interdisciplinar em Mobilidade.Visando um objetivo de colaborar com uma das principais problemáticas sofrida pela indústria automotiva – a poluição atmosférica, e como
Sprícigo, Bruno Paes
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