Results 41 to 50 of about 8,355,382 (176)

Naturally coloured poly(3‐hydroxybutyrate)

Coloration Technology, EarlyView.
Abstract This study reports an innovative approach for producing intrinsically coloured poly(3‐hydroxybutyrate) [P(3HB)] films by incorporating natural dyes—turmeric, paprika, annatto, beetroot and hibiscus—directly into the fermentation medium of Ralstonia solanacearum RS.
Maria Luiza de Oliveira Zanini, Ketnen Rieffel Das Chagas, Camila Rios Piecha, Andressa Baptista Nörnberg, André Ricardo Fajardo, Patrícia Silva Diaz   +5 more
wiley   +1 more source

Funciones de desempeño de seguridad vial para secciones de control en Costa Rica

Ingeniería
Los choques viales representan un alto costo social y económico para el país. Por esta razón, se estudia la Red Vial Nacional de Costa Rica para determinar aquellas secciones de control con potencial de mejora, utilizando funciones de desempeño de ...
Henry Hernández Vega, Rodolfo Fernández Garita, Jonathan Agüero Valverde, Diana Jiménez Romero   +3 more
doaj   +2 more sources

Fungal infection affects sexual signalling and mate choice in the sugarcane borer

Ecological Entomology, EarlyView.
Fungus‐infected Diatraea saccharalis females exhibit enhanced attractiveness to males in wind tunnel assays. Fungal infection alters the pheromone profile of females, increasing the relative abundance of Z9‐16: Ald, a minor but behaviourally active component of the species' sex pheromone blend.
Amanda C. Tuler, Arodi P. Favaris, Flávia P. Franco, José Mauricio S. Bento   +3 more
wiley   +1 more source

Análisis de la respuesta estructural de pavimentos mediante deflectometría de impacto (FWD) en diferentes épocas del año en Costa Rica

Ingeniería, 2011
El Laboratorio Nacional de Materiales y Modelos Estructurales (LanammeUCR) de la Universidad de Costa Rica, realiza cada dos años una evaluación de la red vial nacional pavimentada (ERVN), la cual sirve como instrumento para la gestión de dicha ...
Gustavo Badilla Vargas, Denia Sibaja Obando   +1 more
doaj   +1 more source

Methionine Regulates Antitumour Function of CD8+ T Cells Through Polyamine Synthesis

Immunology, EarlyView.
Methionine restriction in vitro enhances CD8+ T cell effector function by suppressing polyamine synthesis and progressively induces the co‐expression of PD‐1 and TIM‐3. Consistently, sustained dietary methionine restriction diminishes the efficacy of adoptive T cell therapy (ACT) and promotes the expression of terminal exhaustion‐associated markers ...
Tian Zhao, Gillian A. Carleton, Sam Preshaw, Sarah MacPherson, Madison Shiyuk, Joseph Monaghan, Jun Han, Oro Uchenunu, Robert Rottapel, Ralph J. DeBerardinis, Kelly M. Stewart, Bo‐Hyun Kim, Juan Ausió, David R. Goodlett, Helena Pětrošová, Kyle D. Duncan, Julian J. Lum   +16 more
wiley   +1 more source

The ComEA/ComEC Operon is Critical for Nitrosative Stress Tolerance by an Oral Commensal

Molecular Oral Microbiology, EarlyView.
ABSTRACT Oral commensal streptococci play a large role in mediating microbial homeostasis. Our prior work has demonstrated that hydrogen peroxide (H2O2) produced by oral commensal streptococci can react with salivary nitrite (NO2) and generate peroxynitrite (ONOO−), a potent antimicrobial.
Sara E. Edmonds, Hernan Grenett, Priscilla Grenett, Jessica A. Scoffield   +3 more
wiley   +1 more source

TRIBUNAL ARBITRAL DE CONCESIONARIA VIAL DE COLOMBIA S.A.S. VS. AGENCIA NACIONAL DE INFRAESTRUCTURA - ANI [PDF]

, 2019
537
Navia Arroyo, José Felipe, Ramírez Gómez, José Fernando, Barrera Muñoz, William   +2 more
core  

Estadísticas de siniestros viales con víctimas en Costa Rica para el período 2012-2016: Una aproximación para el análisis de la seguridad vial desde los roles de masculinidad y femineidad

, 2020
The road accidents in Costa Rica have taken the lives of more than 1897 people between 2012 and 2016, of whom 86% were men, the vast majority of car or motorcycle drivers. Of the remaining 14% of women who died, more than 75% were passengers in a vehicle,
Pérez Stéfanov, Bohián
core   +1 more source

Desarrollo De herramientas De gestión con base en la Determinación De ínDices Para la reD Vial nacional De costa rica

Ingeniería, 2011
Con el fin de responder a la necesidad expresa de establecer herramientas que sirvieran de apoyo a la eventual creación de un sistema de administración de infraestructura en Costa Rica, la Unidad de Investigación del LanammeUCR desarrolló una ...
Roy Barrantes Jiménez
doaj   +1 more source

A dual pollination strategy combining perfume attraction and food deception in Galeandra blanchetii E.S. Rand (Orchidaceae)

Plant Biology, EarlyView.
Galeandra blanchetii exhibits a dual‐attraction strategy: male euglossine bees are lured by floral scents as a resource, while both sexes are deceived by non‐existent nectar. Pollination only occurs when bees enter the spur to search for nectar, highlighting an evolutionary transition towards the perfume flower syndrome in Catasetinae.
D. M. Camara, A. W. C. Ferreira, A. P. S. Caetano, A. Domingos‐Melo, S. Albuquerque‐Lima, P. Milet‐Pinheiro, I. C. Machado, E. M. Pessoa   +7 more
wiley   +1 more source