Results 51 to 60 of about 394,194 (163)

Partículas em Rikbaktsa

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Humanas, 2019
Resumo Em Rikbaktsa (Macro-Jê), as partículas constituem uma classe léxica, ao lado de advérbios e posposições. Em geral, as partículas são descritas como elementos invariáveis; nesta língua, entretanto, há dois conjuntos de partículas, um marcando ...
Léia de Jesus Silva
doaj   +1 more source

Hurricane‐induced changes in mayfly assemblage structure, production and emergence in a tropical island stream Cambios inducidos por los huracanes en la estructura, producción, y emergencia del ensamblaje de Ephemeroptera de una quebrada de isla tropical

open access: yesEcological Entomology, Volume 50, Issue 1, Page 201-213, February 2025.
Hurricanes create major disturbances to stream ecosystems by producing large floods and removing riparian vegetation. Understanding their impacts is a priority, as hurricane intensity will increase with global climate change. Hurricane disturbance shifts mayfly assemblages from dominance by Leptophlebiidae before to Baetidae after.
Alonso Ramírez   +4 more
wiley   +1 more source

Sobre el transporte de partículas en cuerpos oceánicos semicerrados

open access: yesUniciencia, 1984
El flujo residual ha mostrado tener una función relevante en el transporte de partículas en suspensión, larvas y algunos contaminantes, principalmente.
Guillermo Quirós Álvarez
doaj  

Estudio de la bioactividad de implantes dentales de titanio c.p. G4 tratados superficialmente [PDF]

open access: yes, 2017
El presente trabajo se centró en el estudio del comportamiento bioactivo de muestras de titanio cp blastinizado con partículas de fosfato de calcio, anodizado por plasma químico (APQ) con previo blastinizado con partículas de fosfato de calcio, y ambas ...
Bilmes, Pablo David   +5 more
core   +1 more source

Influencia de la naturaleza de las partículas de proyección en el proceso de shot peening en la mejora de la osteointegración de implantes dentales. [PDF]

open access: yes, 1997
El presente trabajo se ha centrado en valorar el efecto que tiene sobre las características superficiales, tratar la superficie de discos de Ti C. P., mediante un shot peening con distintos tipos de partículas de proyección: AL2O2, TiO2 y SiC. También se
Aparicio, C.   +4 more
core   +2 more sources

Flavor in SU(5)$SU(5)$ Finite Grand Unified Models

open access: yesFortschritte der Physik, Volume 72, Issue 12, December 2024.
Abstract Four SU(5)N=1$SU(5) \nobreakspace N=1$ supersymmetric models which exhibit S3$S_3$ and/or ZN$Z_N$ symmetries are studied, that are finite to two or all loops, and their corresponding mass matrices. The first is an all‐loop finite model based on an S3×Z3×Z2$S_3\times Z_3\times Z_2$ flavor symmetry, which leads to phenomenologically nonviable ...
Luis Odín Estrada Ramos   +3 more
wiley   +1 more source

Modelo de quarks e sistemas multiquarks [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2007
A descoberta de muitas partículas, especialmente nos anos 50, com o surgimento de novos aceleradores, causou a busca por um modelo que descrevesse de forma simplificada o conjunto de partículas conhecidas.
Cristiane Oldoni da Silva   +1 more
doaj   +1 more source

Soil carbon and nitrogen cycling at the atmosphere–soil interface: Quantifying the responses of biocrust–soil interactions to global change

open access: yesGlobal Change Biology, Volume 30, Issue 10, October 2024.
Despite the critical role of biological soil crusts (biocrusts) in dryland C and N cycles, little is known about how biocrust‐derived C and N move into the soil. This study reveals how biocrusts facilitate the downward movement of C and N and drive the formation of mineral‐associated organic matter in subcrust soils.
K. Witzgall   +12 more
wiley   +1 more source

Particulate air pollution and daily mortality: Can results be generalized to Latin American countries? Contaminación atmosférica por partículas y mortalidad diaria: ¿se pueden generalizar los resultados a los países de Latinoamérica?

open access: yesSalud Pública de México, 1997
Objective. Recently, a series of reports, based on ecological analyses of routinely collected data, have shown positive associations between measures of particle concentration and daily mortality counts in various cities of the US and Europe.
ISABELLE ROMIEU   +1 more
doaj  

Small free field inflation in higher curvature gravity

open access: yesJournal of High Energy Physics, 2021
Within General Relativity, a minimally coupled scalar field governed by a quadratic potential is able to produce an accelerated expansion of the universe provided its value and excursion are larger than the Planck scale.
José D. Edelstein   +3 more
doaj   +1 more source

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