Results 41 to 50 of about 54,467 (262)
Ciencia e Ingeniería Neogranadina, 2017 El sistema de refuerzo de estructuras de concreto mediante materiales compuestos se emplea de forma intensiva desde hace 50 años. Sin embargo, aún son numerosas las incógnitas respecto a su comportamiento a largo plazo, por lo cual es fundamental el ...
Victoriano González Fernández +2 more
doaj +2 more sources
Semina: Ciências Exatas e Tecnológicas, 2013 This paper presents a proposal for a voltage inverter topology based on push-pull converters, switched at high frequency to inject energy into the grid from a source of DC power. A system using two reverse voltage static converters provides the power grid; energy in the form of alternating current, that can work in conjunction with the provision of ...
Emerson Charles Martins Silva +1 more
openaire +2 more sources
Analysis of a Mathematical Model of Marital Satisfaction
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT A large number of marriages end in divorce. In this paper, we present a model for the emotional state of a couple based on bilinear ordinary differential equations. We study the effect of changes of each individual's self‐emotional state on the couple's state.
Benito Chen‐Charpentier +2 more
wiley +1 more source
Engenharia Agrícola, 2004 A eficiência de um trator para desenvolver esforço tratório depende da interação entre o rodado e o solo, envolvendo um complexo conjunto de fatores: característica do rodado, patinagem, transferência de peso do trator, tipo de solo, umidade, estado de ...
Antonio Gabriel Filho +3 more
doaj +1 more source
Oikos, EarlyView.Few studies have sought to understand the vertical patterns of bat–fruit systems, and therefore, it is not possible to evaluate whether interpretations based on data collected from a single stratum adequately represent the interaction patterns of this system. In this context, we evaluated the dissimilarity in the assemblage of frugivorous bats, plants,
Karolaine Porto Supi +3 more
wiley +1 more source
Comparison of Selected Functions of Scopus and Web of Science
Knjižnica, 2012 IZVLEČEK Nabava pomembnejših informacijskih virov v Sloveniji poteka prek Javne agencije za raziskovalno dejavnost (ARRS). Web of Science (WoS) je dostopen že dalj časa. Scopus je testno dostopen zadnje leto.
Tomaž Bartol +7 more
doaj +1 more source
Bottom–up and top–down drivers influence urbanization effects on insect herbivory in oaks
Oikos, EarlyView.Urban forests provide essential ecosystem services, including pest control, biodiversity conservation, and human health benefits. Herbivory is a widespread biotic interaction that shapes ecosystem functions, such as primary productivity and soil fertility, which underpin these services.
Gabriela Quiroga +18 more
wiley +1 more source
Ingenieria Industrial, 2017 Se propone desarrollar un modelo de programación de la producción en el proceso de troquelado de calzado, con el fin de generar una carga uniforme de trabajo.
John Paul Reyes Vásquez
doaj
EBioMedicine, 2019 Background: Even though liver kinase B1 (LKB1) is usually described as a tumor suppressor in a wide variety of tissues, it has been shown that LKB1 aberrant expression is associated with bad prognosis in Hepatocellular Carcinoma (HCC). Methods: Herein we
Imanol Zubiete-Franco +25 more
doaj +1 more source
People and Nature, EarlyView.Abstract Pastoral practices remain a widespread economic activity across European mountain regions. However, the viability of this activity may be threatened by the recovery of large wild vertebrates associated with passive rewilding, leading to the so‐called human–wildlife conflicts.
P. Acebes +4 more
wiley +1 more source