Results 91 to 100 of about 3,436,321 (270)

Microwave-assisted embedding of bis-vanillin and bis-eugenol into SBA-15: Synthesis of chemosensors precursors for the detection of metal cations [PDF]

open access: yes, 2017
In this work we evaluate the necessary experimental conditions to carry out the embedding of bis-vanillin and bis-eugenol, two potential precursors of chemosensors, in the porous structure of the mesoporous silica SBA-15 through a microwave assisted ...
Espinoza Martinez, Dailenys   +4 more
core   +1 more source

Hombre, técnica y mundo en Friedrich Dessauer y Günther Anders

open access: yesAraucaria
El presente artículo trata de inscribir el fenómeno de la técnica en el marco de una antropología filosófica que nos permita aproximarnos a una comprensión del momento histórico del siglo XX. Para ello se analiza en primer lugar la noción de técnica propugnada por Friedrich Dessauer, esclareciéndola como un fenómeno totalizador que guarda ...
openaire   +1 more source

The regulatory frameworks surrounding CRISPR‐edited papaya and their impact on international commerce

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract The papaya tree (Carica papaya L.), native to the Americas, is cultivated in tropical regions and holds substantial economic importance, with an estimated export volume of 365 000 t in 2023. However, diseases caused by viruses, fungi, bacteria, and nematodes can lead to severe losses.
Luíza Favaratto   +7 more
wiley   +1 more source

Aplicación de otras técnicas de observaciones histológicas del tegumento bovino deficiente en cobre

open access: yesRevista de Medicina Veterinaria, 2006
El objetivo de este trabajo es comprender e interpretar la histología del tejido tegumentario en bovinos normocuprémicos e hipocuprémicos, a través del Microscopio Óptico Común (MOC) y el Microscopio Electrónico de Barrido (SEM).
María Del Carmen Bisio
doaj   +1 more source

Hiperventilação. A terapia cognitivo-comportamental e a técnica dos exercícios de indução dos sintomas no transtorno de pânico

open access: yesRevista Portuguesa de Pneumologia, 2008
Resumo: O transtorno de pânico (TP) caracteriza-se por ataques agudos de ansiedade frequentes e recorrentes. A actual concepção para o TP realça o medo das sensações corporais a partir do momento em que o indivíduo associa de forma equivocada as sensações físicas que se apresentam como sendo prenúncio de uma doença grave e/ou morte iminente,
Anna Lucia Spear King   +2 more
openaire   +1 more source

Shape Derivatives of the Eigenvalues of the De Rham Complex for Lipschitz Deformations and Variable Coefficients: Part I

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We study eigenvalue problems for the de Rham complex on varying three‐dimensional domains. Our analysis includes the Helmholtz equation as well as the Maxwell system with mixed boundary conditions and non‐constant coefficients. We provide Hadamard‐type formulas for the shape derivatives under weak regularity assumptions on the domain and its ...
Pier Domenico Lamberti   +2 more
wiley   +1 more source

Técnicas de comercialización y diversificación de cultivos para exportación en el sector agroalimentario en México

open access: yesRevista Venezolana de Gerencia, 2019
La variedad de semillas que se pueden producir en la ciudad de Valle Hermoso, Tamaulipas, México condicionan la búsqueda de nuevos espacios territoriales para su producción, la misma se basa en nuevas técnicas de recolección de datos basados en el ...
Francisco Alonso Esquivel   +2 more
doaj  

La restauración del Palacio Grimani de Santa María Formosa en Venecia

open access: yesLoggia, Arquitectura & Restauración, 2015
El artículo describe el largo proceso de restauración de un palacio significativo de la ciudad de Venecia que se encontraba en lamentable estado de abandono, que no solo ha sido capaz de recuperar delicadamente toda su materialidad y decoración interior ...
Claudio Menichelli
doaj   +1 more source

A Model for Induction Motors with Non-Uniform Air-Gap [PDF]

open access: yes, 2005
Equations to calculate inductances of induction motors, considering non-uniform air-gap, are proposed. The analyzed air-gap variations are static and dynamic eccentricity and stator slots.
Bossio, Guillermo Rubén   +4 more
core  

Pharmacological Rac1 inhibitors with selective apoptotic activity in human acute leukemic cell lines [PDF]

open access: yes, 2017
Rac1 GTPase has long been recognized as a critical regulatory protein in different cellular and molecular processes involved in cancer progression, including acute myeloid leukemia.
Cabrera, Maia Diana Eliana   +7 more
core   +2 more sources

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