Results 51 to 60 of about 569,836 (364)
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
Majalah Kulit, Karet, dan Plastik, 2015 The purpose of this research was to study the effect of CV and SEV curing systems on aging and thermal properties of natural rubber and butyl rubber blends.
Arum Yuniari +2 more
doaj +1 more source
The Rheological Properties of Isothermal Curing of DGEBA/ TETA Epoxy System [PDF]
Engineering and Technology Journal, 2015 In this study viscosity (η) of diglycidyl ether of bisphenol A / triethylenetetramine (DGEBA/TETA) system were measured through curing using a Brookfield viscometer at four different temperatures (30, 45, 60 and 80) °C.
Adnan A. Abdul Razak +2 more
doaj +1 more source
Effect of organoclay on the physical properties of UV-curable coatings [PDF]
, 2009 The combination of UV-curing and nanocomposite technology has been studied to produce cost-effective coatings with superior physical and mechanical properties.
Dalgicdir, Cahit +5 more
core +1 more source
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Efecto del contenido de agua sobre la resistencia y la velocidad de pulso ultrasónico del concreto
Tecnura, 2015 The purpose of this study is to determine correlations among content of concrete water, compressive resistance and Ultrasonic Pulse Velocity (UPV). Cylindrical concrete specimens, 200 mm long and 100 mm in diameter made from a mixture of Portland cement ...
Luz Amparo Quintero Ortiz +2 more
doaj +1 more source
A Support Vector Machine Based Cure Rate Model For Interval Censored Data [PDF]
arXiv, 2021 The mixture cure rate model is the most commonly used cure rate model in the literature. In the context of mixture cure rate model, the standard approach to model the effect of covariates on the cured or uncured probability is to use a logistic function. This readily implies that the boundary classifying the cured and uncured subjects is linear.
arxiv
Effect of the curing time on the numerical modelling of the behaviour of a chemically stabilised soft soil [PDF]
, 2017 The ability of the Modified Cam Clay (MCC) model combined with the Von Mises (VM) model, considering the effect of curing time on the enhancement of the mechanical properties of a chemically stabilised soft soil is examined. The evolution of the strength
Correia, Antonio A. S. +2 more
core
Improvement of Electrical Conductivity of SLS PEM Fuel Cell Bipolar Plates [PDF]
, 2005 Previous work in this research demonstrated the feasibility of fabrication of proton exchange membrane (PEM) fuel cell bipolar plates by an indirect selective laser sintering (SLS) route.
Bourell, David L. +2 more
core +1 more source
Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +1 more source