Results 81 to 90 of about 397,687 (208)

CHARACTERIZATION OF TITANIUM WELDED JOINTS BY THE ORBITAL GAS TUNGSTEN ARC WELDING PROCESS FOR AEROSPACE APPLICATION. doi: 10.5028/jatm.2010.02026710

open access: yesJournal of Aerospace Technology and Management, 2011
In this work, three welding programs for orbital gas tungsten arc welding (GTAW), previously developed, were used, using pulsed current and increasing speed (#A), constant current (#B) and pulsed current and decreasing current (#C).
José A. Orlowski de Garcia   +5 more
doaj  

Experimental Study of Single Expansion Ramp Nozzle Performance Using Pitot Pressure and Static Pressure Measurements

open access: yesInternational Journal of Aerospace Engineering, 2019
In order to overcome the drag at hypersonic speed, hypersonic flight vehicles require a high level of integration between the airframe and the propulsion system.
Sergio Nicolas Pachón Laitón   +4 more
doaj   +1 more source

Aspectos Agrosocioeconômicos da cultura do milho: características e evolução da cultura no estado de Pernambuco entre 1990 e 2003. [PDF]

open access: yes, 2011
bitstream/item/26101/1/doc-91 ...
CUENCA, M. A. G.   +2 more
core  

Integrating classical and quantum mechanics in melatonin receptors for structure-guided drug design

open access: yesAcademia Biology
Although melatonin receptor agonists are acknowledged for their therapeutic potential for managing sleep problems, the structural optimization of these compounds is made challenging by variations in crystallographic data.
Gabriela de Lima Menezes   +9 more
doaj   +1 more source

CARACTERIZAÇÃO AMBIENTAL DA MICROBACIA DO RIO BUQUIRA NO TRECHO DO BAIRRO COSTINHA AO MIRANTE DO BUQUIRINHA

open access: yesRevista UniVap, 2016
Este artigo tem como finalidade analisar a microbacia, do Rio Buquira (que é o maior afluente, da margem esquerda, do Rio Paraíba do Sul), situada na região Norte da cidade de São José dos Campos-SP, onde os loteamentos Costinha e Mirante do Buquirinha ...
Aline Aparecida Dias Santos   +2 more
doaj   +1 more source

Partir e ficar : Dinâmicas nos processos de migraçao e imigraçao no norte de Minas Gerais- Brasil [PDF]

open access: yes, 2014
This proposal assumes that the migration process is a socio-spatial process. Where desires, goals, fears and hopes of migrating become identities, social constructs that ultimately lead to ways of belonging.
Araújo, Ana Flávia Rocha de   +2 more
core  

Acridones as promising drug candidates against Oropouche virus

open access: yesCurrent Research in Microbial Sciences
Oropouche virus (OROV) is an emerging vector-borne arbovirus found in South America that causes Oropouche fever, a febrile infection similar to dengue fever.
Marielena Vogel Saivish   +16 more
doaj   +1 more source

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