Results 121 to 130 of about 4,671,900 (179)

The struggle for food amid social inequity and violence: Food insecurity in the Amazon piedmont in Caquetá [PDF]

Biomedica
Estrada S, Pasaje M, Botache JP, Méndez F.   +3 more
europepmc   +1 more source

Obtención y evaluación de las propiedades mecánicas y químicas del caucho natural epoxidado

The present study focused on the production of epoxidized natural rubber (ENR) through an epoxidation process using low-ammonia centrifuged latex as the raw material. The reaction was carried out with 85% formic acid, 50% hydrogen peroxide as the epoxidizing agent, a non-ionic surfactant (ethoxylated alcohol), and distilled water as the reaction medium.
openaire   +1 more source

Alternatives for Enhancing Mechanical Properties of Recycled Rubber Seismic Isolators. [PDF]

Polymers (Basel)
Rivas-Ordonez FS, Meza-Munoz AO, Madera-Sierra IE, Rojas-Manzano MA, Patino ED, Salmerón-Becerra MI, Dyke SJ.   +6 more
europepmc   +1 more source

Systematics of South American snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Ecuador and Peru. [PDF]

Zookeys, 2018
Arteaga A, Salazar-Valenzuela D, Mebert K, Peñafiel N, Aguiar G, Sánchez-Nivicela JC, Pyron RA, Colston TJ, Cisneros-Heredia DF, Yánez-Muñoz MH, Venegas PJ, Guayasamin JM, Torres-Carvajal O.   +12 more
europepmc   +1 more source

Exploring the Mechanical and Thermal Impact of Natural Fillers on Thermoplastic Polyurethane and Styrene-Butadiene Rubber Footwear Sole Materials. [PDF]

Polymers (Basel)
Serrano-Martínez VM, Pérez-Aguilar H, Carbonell-Blasco MP, Llobell-Andrés C, Aran-Ais F, García-García A, Orgilés-Calpena E.   +6 more
europepmc   +1 more source

Cinéticas de espumación y control de la estructura celular en materiales basados en caucho natural y poliolefinas

, 2016
Pós-graduação em Ciência e Tecnologia de Materiais ...
openaire   +1 more source

Description of a new soft scale insect of the genus Pulvinaria Targioni Tozzetti (Hemiptera, Coccoidea, Coccidae) from Bogota, Colombia. [PDF]

Zookeys, 2015
Tanaka H, Kondo T.
europepmc   +1 more source

Composition and Structure of Thripidae Populations in Crops of Three Geographical Regions in Colombia. [PDF]

J Insect Sci, 2019
Ebratt-Ravelo EE, Castro-Avila AP, Vaca-Uribe JL, Corredor-Pardo D, Hance T, Goldarazena A.   +5 more
europepmc   +1 more source

Evaluación de las variedades de látex de caucho natural colombiano IAN 710, IAN 873 y FX 3864

, 2018
RESUMEN: Se evalúa látex de caucho natural -estabilizado- de las variedades clonales IAN 710, IAN 873 y FX 3864, cultivadas en el Municipio de Tarazá- Vereda Santa Clara, Bajo Cauca Antioqueño, durante el estado fenológico de floración con el fin de identificar las diferencias que presenta cada clon en las propiedades físico-químicas del látex.
openaire   +1 more source

[Asthma]. [PDF]

Open Respir Arch
Pinedo Sierra C, Curto Sánchez E, Diaz Campos R, Hermida Valverde T, Sánchez-Cuellar S, Fernández Tena A.   +5 more
europepmc   +1 more source