Results 161 to 170 of about 2,217,727 (347)

Pesquisa florestal no Nordeste semi-árido: sementes e mudas. [PDF]

open access: yes, 1980
Estudos de métodos para superar a dormência de sementes de Piptadenia obliqua; Influência da embalagem e condições de armazenamento na longevidade de sementes florestais; Efeito do tipo de embalagens e condições de armazenamento na preservação de ...
EMBRAPA. Centro de Pesquisa Agropecuária do Trópico Semi-Árido.
core  

Male reproductive system in stenopodidean shrimps: Unveiling basal reproductive traits in shrimp‐like Pleocyemata (Stenopodidae and Spongicolidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira   +2 more
wiley   +1 more source

Pesquisa de Percepção da Política Fiscal Brasileira [PDF]

open access: yes, 2010
A Escola de Administração Fazendária (ESAF) tem por missão desenvolver pessoas para o aperfeiçoamento da gestão das finanças públicas e a promoção da cidadania.
Escola de Administração Fazendária (Esaf)
core  

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

open access: yesThe Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini   +3 more
wiley   +1 more source

Pesquisa em irrigação no trópico Semi-Árido: solo, água, planta. [PDF]

open access: yes, 1981
Caracteristicas fisico hidricas de tres latossolos irrigados do Projeto Bebedouro. Evapotranspiracao de feijao-de-corda. Metodologia para determinar as necessidades de agua das culturas irrigadas.
EMBRAPA. Centro de Pesquisa Agropecuária do Trópico Semi-Árido.
core  

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

open access: yesAsian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

Pesquisa de História do Brasil: trabalhos em realização

open access: yesRevista de História, 1971
Em fins de 1970, sob a orientação do Profesor Dr. Frédéric Mauro, o Setor de Documentação iniciou um fichário de teses e trabalhos sôbre História do Brasil.
Katia M. Abud, Raquel Glezer
doaj  

Enzymatic synthesis of acylglycerides from agroindustrial residues: process design and simplified techno‐economic assessment

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study developed an enzymatic process to add value to palm oil fatty acid distillate (PFAD) and glycerol, resulting in the production of monoacylglycerides (MAG) and diacylglycerides (DAG). The biocatalyst loading (Novozym 435) and molar ratio of reagents were evaluated to obtain a suitable reaction condition in terms of space–time yield ...
Ronaldo Rodrigues de Sousa   +4 more
wiley   +1 more source

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