Results 71 to 80 of about 2,839,522 (270)

Valorization of nopal wastes to produce quantum dots: optimizing synthesis and exploring in smart textile applications

open access: yesFrontiers in Materials
Quantum carbon dots (QCDs) were efficiently synthesized from post-extraction residues generated during nopal fabric production using a hydrothermal treatment. These QCDs were applied to nopal fabrics, enhancing their UV solar radiation absorption.
Jesús Baltazar Mosqueda-Prado   +5 more
doaj   +1 more source

Buenas prácticas ambientales para el manejo sustentable de aceites provenientes de lubricadoras en el Cantón Esmeraldas

open access: yesRevista GICOS, 2022
La aplicación de un esquema de buenas prácticas ambientales se enfoca básicamente en generar el reconocimiento de un proceso de operaciones asociadas a procedimientos estandarizados para garantizar, un servicio de calidad, con el cuidado y protección ...
José Charcopa
doaj  

Teoría y experiencias en el incremento de ductilidad de los hormigones de alta resistencia reforzados con fibras de acero.

open access: yesRevista ALCONPAT, 2012
RESUMEN Las acciones de impacto y cargas impulsivas provocadas por misiles o choque de aeronaves sobre edificios de contención de reactores nucleares o sobre grandes depósitos de almacenamiento de gas licuado, o de vehículos o buques contra pilas de ...
Manuel Fernández Cánovas
doaj   +1 more source

Horizon Report 2009 [PDF]

open access: yes, 2009
El informe anual Horizon investiga, identifica y clasifica las tecnologías emergentes que los expertos que lo elaboran prevén tendrán un impacto en la enseñanza aprendizaje, la investigación y la producción creativa en el contexto educativo de la ...
Johnson, L., Levine, A., Smith, R.
core   +1 more source

Evaluating the empirical basis for threat attribution in the IUCN Red List

open access: yesConservation Biology, EarlyView.
Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries   +5 more
wiley   +1 more source

Differentes canais de impacto da educação na pobreza [PDF]

open access: yes
O artigo analisa os efeitos monetários e os não-monetários do nível de escolaridade do chefe de família na situação de pobreza. Propomos que o rendimento da escolaridade não seja pensado como um simples número– usualmente o coefi ciente de escolaridade ...
BLANCA ZULUAGA DÍAZ
core  

Population impact of a podiatric school health programme [PDF]

open access: yes, 2016
Este trabajo presenta un resumen de lo realizado en los últimos 12 años de colaboración entre la comunidad escolar de varios centros de enseñanza primaria y secundaria y los/las responsables de las prácticas de la asignatura Podología Preventiva y ...
Mahillo Durán, Ramón
core   +1 more source

Functional homogenization of terrestrial mammals outside protected areas in the Hengduan Mountains, China

open access: yesConservation Biology, EarlyView.
Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li   +8 more
wiley   +1 more source

ALTERAÇí-ES HEMATOLÓGICAS EM CURIMBATÁ, Prochilodus scrofa STEINDACHNER, 1881, EXPOSTO AO DIPTEREX 500 (TRICHLORFON)

open access: yesBoletim do Instituto de Pesca, 2019
Espécimes juvenis de curimbatá, Prochilodus scrofa, foram divididos em dois lotes, colocados em aquários de 81 litros, sendo um controle e outro tratado com Dipterex 500 (Trichlorfon), na concentração de 0,2 µL/L, onde os peixes permaneceram até o ...
Maria José Tavares RANZANI-PAIVA   +4 more
doaj  

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás   +4 more
wiley   +1 more source

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