Results 21 to 30 of about 1,224,431 (264)

Cryopreservation of Byrsonima intermedia embryos followed by room temperature thawing [PDF]

, 2015
Byrsonima intermedia is a shrub from the Brazilian Cerrado with medicinal properties. The storage of biological material at ultra-low temperatures (-196°C) is termed cryopreservation and represents a promising technique for preserving plant diversity ...
Andre, E., Paiva, R., Panis, B., Silva, L.C., Swennen, Rony L.   +4 more
core   +1 more source

Spectroscopic Evidence of Edge‐Localized States in an Antiferromagnet Topological Insulator NdBi

Advanced Science, EarlyView.
Using spin‐polarized scanning tunneling microscopy (STM) in conjunction with quasiparticle interference, we successfully identify distinct signatures of the ferromagnetic and antiferromagnetic terminations in NdBi, a rare‐earth monopnictide exhibiting non‐trivial topology and magnetism. We demonstrate that step edges on ferromagnetic surfaces host well‐
Avior Almoalem, Rebecca Chan, Brinda Kuthanazhi, Juan Schmidt, Jose A. Moreno, Hermann Suderow, Paul Canfield, Taylor L. Hughes, Vidya Madhavan   +8 more
wiley   +1 more source

Influência da incorporação de coberturas mortas e da mobilização no comportamento térmico da camada de ar acima de um Solo mediterrâneo pardo [PDF]

, 2010
A aplicação de coberturas mortas (mulches) à superfície do solo ou a simples mobilização deste influenciam directamente o respectivo balanço energético, modificando deste modo o ambiente térmico da camada superficial do solo e o da camada de ar ...
Andrade, José
core  

Obciążalność mocą silnika indukcyjnego w warunkach występowania odchylenia napięcia i częstotliwości

Scientific Journal of Gdynia Maritime University, 2018
Artykuł dotyczy wpływu odchylenia częstotliwości i napięcia zasilającego na dopuszczalną obciążalność silnika indukcyjnego klatkowego. Wyniki badań przedstawiono dla silnika o mocy 3 kW budowy całkowicie zamkniętej.
A. Budziłowicz, P. Gnaciński
doaj   +1 more source

Conversión hidrotermal de biomasa en bioproductos valiosos [PDF]

, 2019
Los procesos hidrotérmicos son una excelente alternativa para convertir desechos de biomasa en productos de alto valor energético. El alcance de este proyecto ofrece el estudio de 5 tipos de biomasa distintos: café, madera blanca, arroz, lignina y madera
García Riesco, Luis Miguel
core  

Universal restrictions to the conversion of heat into work derived from the analysis of the Nernst theorem as a uniform limit

, 2003
We revisit the relationship between the Nernst theorem and the Kelvin-Planck statement of the second law. We propose that the exchange of entropy uniformly vanishes as the temperature goes to zero. The analysis of this assumption shows that is equivalent
, Alfredo Rey de Luna, Baierlein R, Balian R, Belgiorno F, Carathéodory C, Clausius R, Epstein P, Huang K, Jones D S, Jos Mar a Mart n-Olalla, Kestin J, Kestin J (ed), Landau L, Landsberg P, Landsberg P, Landsberg P, Liboff R, Mafé S, Nernst W, Nernst W, Oppenheim I, Planck M, Rose-Innes C, Thomson W, Wu J, Yan Z, Zemansky M   +27 more
core   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop, Jiwei Li, Daryl L. Moorhead, Sasha C. Reed, Katherine E. O. Todd‐Brown, Alexi C. Besser, Dellena Evelyn Bloom, Thomas C. Ingalls, Alejandro Cueva   +8 more
wiley   +1 more source

Climate‐induced shifts in long‐term tropical tree reproductive phenology: Insights from species dependent on and independent of biotic pollination

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The dependence on biotic pollination may constrain plant phenological responses because flowering time ultimately defines reproductive success. We proposed a local‐scale study combining long‐term phenology and experimental data to evaluate how a key functional trait—the
Amanda Eburneo Martins, Priscilla de Paula de Loiola, Daniel Pareja‐Bonija, Leonor Patricia Cerdeira Morellato   +3 more
wiley   +1 more source

Record phenological responses to climate change in three sympatric penguin species

Journal of Animal Ecology, EarlyView.
This paper is impressive because we managed to monitor extensively a really difficult place to reach and operate in. We deployed 77 cameras across Antarctica and the Sub Antarctic islands to monitor three different species of penguins. We found that they are the fastest advancing vertebrates with respect to their timing of breeding.
Ignacio Juarez Martinez, Alex Kacelnik, Fiona M. Jones, Jefferson T. Hinke, Michael J. Dunn, Andrea Raya Rey, Heather J. Lynch, Kate Owen, Tom Hart   +8 more
wiley   +1 more source

Considerações sobre o conceito de temperatura e de temperatura absoluta [PDF]

Revista Brasileira de Ensino de Física, 2006
Discute-se o conceito de temperatura que emerge da ação de contato, e a conveniência de torná-lo menos abstrato levando em conta a quantidade de matéria envolvida. Mostra-se que o conceito de 'energia térmica molar', numericamente igual ao produto da constante dos gases pela temperatura absoluta, preenche aquele fim, expressando o conteúdo cinético da ...
openaire   +6 more sources