Results 61 to 70 of about 516,341 (230)

Long‐term trends in parasite diversity and infection levels: approaches and patterns

open access: yesBiological Reviews, EarlyView.
ABSTRACT Parasites exist in every ecosystem, affecting nearly all organisms and playing a complex role in human societies. On the one hand, they contribute substantially to biodiversity and support ecosystem stability by performing essential ecological functions.
Cyril Hammoud   +8 more
wiley   +1 more source

Variables socioeconómicas influyentes en los modelos de desarrollo de Singapur y Panamá

open access: yesVisión Antataura, 2019
El estudio busca establecer diferenciación entre el modelo de desarrollo económico de Singapur y el de Panamá. Su importancia radica en determinar las variables causales de la disimilitud. Los resultados más importantes del estudio se basan en variables
Leonardo Enrique Collado Trejos   +1 more
doaj  

Escalas de producción en economías mineras: El caso de Chile en su dimensión regional

open access: yesEURE (Santiago) - Revista Latinoamericana de Estudios Urbano Regionales, 2014
Una proporción importante de la producción de cobre en Chile está geográficamente concentrada en dos regiones: Antofagasta y Atacama. A pesar de la evolución positiva del precio del cobre, el ingreso promedio de estas localidades ha presentado ...
Nathaly Rivera, Patricio Aroca
doaj   +1 more source

Equivalent Circuit Modelling of Non-Symmetric Reciprocal Lossy Electromagnetic Structures [PDF]

open access: yes, 2018
Lattice-network-based equivalent circuits of lossy symmetric reciprocal electromagnetic structures have shown superior performance when compared to other topologies like the T- or PI- networks.
Abdo Sánchez, Elena   +3 more
core  

Fuentes y método para estimar la renta regional: Santander, 1891-1930 [PDF]

open access: yes, 1993
El ensayo consiste en una estímación de la tenta regional por la vía del producto, aplicado a la economía de Cantabria durante el primer tercio del siglo XX.
Aceña   +47 more
core   +4 more sources

Pomace Olive Oil Concentrated in Triterpenic Acids Restores Vascular Function, Glucose Tolerance and Obesity Progression in Mice [PDF]

open access: yes, 2020
Pomace olive oil, an olive oil sub-product, is a promising source of bioactive triterpenoids such as oleanolic acid and maslinic acid. Considering the vascular actions of pomace olive oil and the potential effects of the isolated oleanolic acid on ...
Claro Cala, Carmen María   +6 more
core   +1 more source

Consumer Responses to Physical, Digital and Integrative Sustainability Strategies in the Apparel Industry: A Systematic Review

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The apparel industry is one of the world's most profitable sectors but also among the most environmentally damaging. Growing sustainability pressures have led companies to adopt diverse strategies to reduce their impact, yet no single study has systematically analysed these approaches or their consumer implications.
Maria Leonor Ferreira   +1 more
wiley   +1 more source

A free boundary tumor model with time dependent nutritional supply [PDF]

open access: yes, 2020
A non-autonomous free boundary model for tumor growth is studied. The model consists of a nonlinear reaction diffusion equation describing the distribution of vital nutrients in the tumor and a nonlinear integro-differential equation describing the ...
Caraballo Garrido, Tomás   +3 more
core  

Tuning the Twist by Molecular Design: A New Strategy for Hexabenzocoronene‐Containing Helical Twistacene

open access: yesChemistry – A European Journal, EarlyView.
An efficient Scholl–based strategy enables precise control of the C–C bond to access the first hexabenzocoronene–containing helical twistacene (NG2). The resulting nanographene shows pronounced helical distortion, high stability, enhanced solubility, and promising redox and optoelectronic properties.
Juan P. Mora‐Fuentes   +8 more
wiley   +1 more source

La práctica profesional en la Universidad de Panamá: el caso de la Facultad de Economía del Centro Regional Universitario de Azuero, 2013-2017.

open access: yesVisión Antataura, 2018
La práctica profesional constituye la opción al trabajo de graduación más importante en la facultad de Economía del CRUA (64% de los graduados entre 2013 y 2017).
Celia Fleck
doaj  

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