Results 51 to 60 of about 1,010,739 (318)

Synthesis of the Macrocylic Core of the Solomonamides, a New Class of Cyclopeptides of Marine Origin [PDF]

, 2016
Se describe estudios sintéticos dirigidos hacia la síntesis total de solomonamides, una nueva clase de ciclopéptidos de origen marino que presentan interesantes propiedades biológicas. La aproximación sintética se basó en la metátesis de cierre de anillo
Cheng-Sánchez, Iván
core  

Propiedades psicométricas de un Cuestionario de Trolling en una muestra argentina

Revista Argentina de Ciencias del Comportamiento, 2019
El Trolling es una conducta de suma relevancia psicosocial. Sin embargo, no existen en la Argentina estudios que hayan examinado las propiedades de instrumentos para evaluarlo.
S. Resett, Pablo González Caino
semanticscholar   +1 more source

Evaluating synthetic substitutes to reduce illegal harvesting and support species recovery

Conservation Biology, EarlyView.
Abstract Providing synthetic substitutes is a widely promoted strategy to shift consumer demand away from wildlife products derived from threatened species. Yet, there is little evidence on whether product substitution prevents illegal or unsustainable harvesting and contributes to the recovery of threatened populations.
Aditya Shekhar Malgaonkar, Gareth Whittington‐Jones, Tristan Dickerson, Maswabi Lishandu, Sarah Davies, Zoe Woodgate, Xia Stevens, Choolwe Mulenga, Gift Mulenga, Mathew Phiri, Lucky Mulenga, Manyando Mukela, Gryton Kasamu, Willem A. Nieman, Gareth Mann, Abishek Harihar, Diogo Veríssimo, Rob Pickles   +17 more
wiley   +1 more source

Desarrollo de materiales elastoméricos para la fabricación de pie- zas de helicópteros

Anales de la Academia de Ciencias de Cuba, 2022
Introducción. El presente trabajo tiene como propósito buscar una solución a la problemáti- ca existente en los rotores de los helicópteros, debido a la demanda en el país de piezas de repuesto (diafragma y protector de goma) para el buen ...
Blanca Rosa Cruz Cal, Belkis F. Guerra Valdés, Ricardo Alfonso Blanco, Eusebio Vladimir Ibarra Hernández, Marlene Dupin Fonseca   +4 more
doaj  

Escobajos de la vid como fuente de compuestos fenólicos con propiedades antioxidantes [PDF]

, 2019
Winemaking industry generates considerable amounts of bunch stems that are usually wasted despite their potential value as source of bioactive compounds. Phenolic profiles and antioxidant capacity (AC) of bunch stem extracts from eight grape varieties of
Bottini, Ambrosio Rubén, Ferreyra, Susana Gisela, Fontana, Ariel Ramón   +2 more
core  

Universal restrictions to the conversion of heat into work derived from the analysis of the Nernst theorem as a uniform limit

, 2003
We revisit the relationship between the Nernst theorem and the Kelvin-Planck statement of the second law. We propose that the exchange of entropy uniformly vanishes as the temperature goes to zero. The analysis of this assumption shows that is equivalent
, Alfredo Rey de Luna, Baierlein R, Balian R, Belgiorno F, Carathéodory C, Clausius R, Epstein P, Huang K, Jones D S, Jos Mar a Mart n-Olalla, Kestin J, Kestin J (ed), Landau L, Landsberg P, Landsberg P, Landsberg P, Liboff R, Mafé S, Nernst W, Nernst W, Oppenheim I, Planck M, Rose-Innes C, Thomson W, Wu J, Yan Z, Zemansky M   +27 more
core   +1 more source

Propriedades psicométricas do questionário de expectativas para o consumo de álcool (AEQ-A) em estudantes de psicologia de Mar del Plata, Argentina [PDF]

, 2016
El objetivo del presente trabajo fue analizar las propiedades psicométricas (estructura factorial, consistencia interna y validez concurrente) de una versión adaptada del Alcohol Expectancy Questionnaire Adolescents (AEQ-A) en estudiantes universitarios ...
Conde, Karina, Cremonte, Mariana, Lichtenberger, Aldana, Peltzer, Raquel Inés   +3 more
core   +6 more sources

Efecto de diferentes tratamientos térmicos sobre las propiedades tecfuncionales de la harina de fríjol blanco (Phaseolus lunatus L.) y la determinación de su potencial uso agroalimentario

Inge-Cuc, 2019
Introducción: El frijol blanco (Phaseolus lunatus L)., es una leguminosa de alto valor nutricional, gracias a sus contenidos de proteínas, carbohidratos complejos y fibra.
Yair Enrique García Pacheco, Danelys Cabrera Mercado, Jairo Andrés Ballestas Santos, Michel José Campo Arrieta   +3 more
semanticscholar   +1 more source

External structures at the nest‐site predict asymmetric architecture of nests in a mud‐building bird

Ibis, EarlyView.
In the animal kingdom, nests are essential structures and textbook examples of extended phenotypes. However, the relationship between builders, nest traits and the nest‐site remains poorly understood. We indirectly examine whether structures in the nest‐site influence nest‐building behaviour, specifically focusing on their effect on nest architecture ...
Nicolas M. Adreani, Victoria Morales Latorre, Lucia Mentesana   +2 more
wiley   +1 more source

Propiedades psicométricas de la Escala de Ciber-Violencia en Parejas Adolescentes (Cib-VPA)

Suma Psicológica, 2018
The use that adolescents make of social networks, mobile and the Internet to perpetrate violence towards their couple is worrying. Hence, it is necessary to have reliable instruments specific to the adolescent population to facilitate the evaluation of ...
María Jesús Cava Caballero, Sofía Buelga Vázquez   +1 more
semanticscholar   +1 more source