Results 101 to 110 of about 11,309 (240)

Cellular mechanisms of radiation‐induced myocyte dysfunction: effects on calcium handling, ion channel regulation and mitochondrial energetics

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley   +1 more source

Equações de sortimentos para Tectona grandis na região centro–sul de Mato Grosso

Assortment of Tectona grandis in south–central region of Mato Grosso, Brazil

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open access: yesPesquisa Florestal Brasileira, 2012
O objetivo desse estudo foi comparar a acurácia das estimativas dos volumes ao longo do fuste de Tectona grandis L.f propiciadas por ajustes de modelos polinomiais segmentados e não segmentados, para um povoamento na região Centro-Sul de Mato Grosso ...
Cyro Matheus Cometti Favalessa   +4 more
doaj  

Multiscale mechanistic modelling of heterogeneity in cardiac sub‐cellular calcium handling accounting for variable t‐system density

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Illustration of spatial calcium dynamics (left panels) and the state cycle approximation (middle panel) that enables reduced simulation of spatially dependent dynamics without explicit description of space (right panels). The selected example here illustrates a spontaneous calcium wave, showing temporal snapshots of local calcium
Michael A Colman   +2 more
wiley   +1 more source

The ultrarapid delayed rectifier potassium current has important functional role in the repolarization reserve of canine and human ventricular muscle

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend The ultrarapid delayed rectifier potassium current (IKur) has long been considered an atrial‐specific current with no functional role in the ventricles, despite evidence of its expression in ventricular myocytes. In the present study we challenged this prevailing concept and investigated the potential role of IKur in ventricular ...
Alaa Amin E. Abdelmagid   +17 more
wiley   +1 more source

Beat‐to‐beat variability of ventricular repolarization reveals sex‐specific instability and proarrhythmic risk

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend A mechanistic framework linking sex‐dependent dynamical instability to proarrhythmic risk. Sex‐specific human ventricular models show that upstream modulators, including biological sex, hormones, drugs and heart disease, promote steeper APD restitution in female than male and enhance dynamical instability.
Daisuke Sato   +3 more
wiley   +1 more source

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

open access: yesThe Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source

Anastrepha grandis: Distribution, Host Plants, and Management—A Review

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 9, Page 977-988, September 2026.
This graphic summary illustrates the databases and languages used in the bibliographic search for the review of the geographic distribution of Anastrepha grandis (Diptera: Tephritidae) in the Americas and different regions of Brazil, the main host plants of the Cucurbitaceae family, the management strategies used, and the main challenges related to the
Liz Maria Matilde Duarte   +2 more
wiley   +1 more source

Insights Into Soil Health in Sugarcane From a Bibliometric Analysis: Brazil's Scientific Contribution to the World

open access: yesGCB Bioenergy, Volume 18, Issue 9, September 2026.
This bibliometric review (2000–2025) reveals a sharp increase in publications and citations on sugarcane soil health after 2010, driven by mechanized harvesting and climate–bioenergy policies. Research is spatially concentrated in São Paulo State and dominated by chemical and physical indicators, with biological attributes remaining underrepresented ...
Lucas Jónatan Rodrigues da Silva   +9 more
wiley   +1 more source

Biologia comparada e consumo foliar de Anisodes sp. (Lepidoptera: Geometridae) em folhas novas e velhas de Eucalyptus grandis W. Hill ex maid (Myrtaceae) e Psidium guajava l. (Myrtaceae)

open access: yesBioscience Journal, 2006
Anisodes sp. (Lepidoptera: Geometridae) foi encontrada causando danos em mudas de Psidium guajava L. (Myrtaceae) e Eucalyptus grandis W. Hill ex Maid (Myrtaceae) em Viçosa, Minas Gerais e teve sua biologia estudada em laboratório a 25±2ºC, umidade ...
Germi Porto Santos   +4 more
doaj  

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