Results 71 to 80 of about 48,005 (189)

The Noncommutative Harmonic Oscillator based in Simplectic Representation of Galilei Group

open access: yes, 2013
In this work we study symplectic unitary representations for the Galilei group. As a consequence the Schr\"odinger equation is derived in phase space. The formalism is based on the non-commutative structure of the star-product, and using the group theory
A Connes   +47 more
core   +1 more source

Determinação das Cianobactérias de Subsuperfície de Sedimentos Marginais do Brejo do Pau Fincado do Complexo Lagunar de Araruama, RJ, Brasil [PDF]

open access: yes, 2011
O brejo do Pau Fincado é um corpo aquático natural, localizado no Complexo Lagunar de Araruama, que apresenta variações de salinidade em uma amplitude de hipersalina a salobra.
Deise de Oliveira Delfino   +5 more
core   +2 more sources

BioTIME 2.0: Expanding and Improving a Database of Biodiversity Time Series

open access: yesGlobal Ecology and Biogeography, Volume 34, Issue 5, May 2025.
ABSTRACT Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic ...
Maria Dornelas   +484 more
wiley   +1 more source

Diagrama morfológico Parte I : instrumento de análise e projeto ambiental com uso de luz natural [PDF]

open access: yes, 2007
O projeto de arquitetura deve, por definição, encontrar um “compromisso”entre exigências de diversos tipos, dentre as quais os requisitos funcionais, estéticos,ambientais e econômicos que a obra arquitetônica deve resolver de maneira satisfatória ...
Amorim, Cláudia Naves David
core   +3 more sources

Desempenho produtivo de fêmeas das raças Canchim e Nelore. II. Primeiro parto. [PDF]

open access: yes, 2011
O presente trabalho apresenta os resultados referentes ao primeiro parto de um estudo de comparação entre as raças Canchim e Nelore. Verificou-se que o sexo do bezerro não apresentou efeito significativo sobre a idade ao primeiro parto e período de ...
ALENCAR, M. M. de, BUGNER, M.
core  

Corroborating the equivalence between the Duffin-Kemmer-Petiau and the Klein-Gordon and Proca equations

open access: yes, 2014
It is shown that the Hamiltonian version of the Duffin-Kemmer-Petiau theory with electromagnetic coupling brings about a source term at the current. It is also shown that such a source term disappears from the scenario if one uses the correct physical ...
Castro, L. B., de Castro, A. S.
core   +1 more source

Using red–green–blue vegetation indices to evaluate complex agronomical traits in soybean breeding

open access: yesAgronomy Journal, Volume 117, Issue 1, January/February 2025.
Abstract High‐throughput phenotyping is an emerging tool that allows access to identify simple and complex traits, accelerating genetic discoveries and selection. Vegetation indices strongly correlate with several economic crop traits, allowing plant breeders to detect variation in breeding populations.
Mariana Silva Vianna   +5 more
wiley   +1 more source

‘No memory, no desire’: psychoanalysis in Brazil during repressive times [PDF]

open access: yes, 2016
Until recently, the growth and significance of Brazilian psychoanalysis has been neglected in histories of psychoanalysis. Not only is this history long and rich in its professional and cultural dimensions, but there was an especially important ‘event’ –
Aline Rubin   +60 more
core   +1 more source

Prevalence of NANDA‐I Nursing Diagnoses in patients with heart failure: A systematic review and meta‐analysis

open access: yesInternational Journal of Nursing Knowledge, Volume 36, Issue 1, Page 106-119, January 2025.
Abstract Aim This research quantitatively explored the prevalence of NANDA‐I nursing diagnoses related to the care of patients experiencing heart failure. Design A systematic review and meta‐analysis were conducted with the systematic review protocol registered in PROSPERO (registration number: CRD42022382565).
Inmaculada Paneque‐Sánchez‐Toscano   +3 more
wiley   +1 more source

Realismos Autoritário e Liberal: Aspectos da Imaginação sobre Representação Política em Fins do Século XIX e Princípios do XX

open access: yesDados: Revista de Ciências Sociais
RESUMO O artigo explora a premissa de contraste estrito entre “idealistas utópicos” e “orgânicos” suposta por autores que, a despeito de importantes diferenças analíticas e geracionais, se alinham num dos mais destacados cânones do pensamento político ...
Cristina Buarque de Hollanda, Ivo Coser
doaj   +1 more source

Home - About - Disclaimer - Privacy