Results 151 to 160 of about 5,050,575 (301)

Phenomenological Study of Backward Bifurcation in Epidemiological Models.

open access: yes, 2005
This thesis is about the phenomenological study of bifurcations in epidemiologicalmodels, in particular, in backward bifurcation. We consider models that exhibit such bifurcation and also consider the factors that cause them.
Manuhwa, Byron
core  

Bronchoscope Tip Localization With Learned Airway Constraints and an Open Source Simulator

open access: yesAdvanced Intelligent Systems, EarlyView.
BronchoLoc addresses feature‐poor bronchoscopic imaging by combining monocular video with a preoperative CT graph to estimate 3D camera location. A local tracker identifies candidate branches, while a sequence‐aware global module refines the trajectory. Demonstrating sub‐centimeter accuracy across synthetic and phantom datasets, this framework advances
Emanuele Nicotra   +7 more
wiley   +1 more source

Formation of Highly Selective Binding Pockets in UiO‐Type MOFs From Bridged Linkers

open access: yesAngewandte Chemie International Edition, EarlyView.
Much room for design: We present a generalizable strategy for precisely modifying UiO‐type Metal‐organic frameworks with functional groups in a site‐specific manner. Through the use of pre‐connected linkers, pocket‐like pores for molecular recognition are generated.
Tobias Hennig   +7 more
wiley   +1 more source

Streamline and Isotherm Visual Analysis of Darcy–Forchheimer von Karman Spinning Flow of Maxwell Fluid Over a Stretching Disk With Quadratic Temperature‐Dependent Heat Source

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne   +6 more
wiley   +1 more source

A Bifurcated Global Nuclear Order

open access: yes, 2018
Abstract The very destructiveness of nuclear weapons makes them unusable for ethical and military reasons. The world has placed growing restrictions on the full range of nuclear programs and activities. But with the five NPT nuclear powers failing to eliminate nuclear arsenals, other countries acquiring the bomb, arms control efforts ...
openaire   +2 more sources

Cu Site Preference and Structural Evolution in Cu‐Doped BiMn7O12 Quadruple Perovskite

open access: yesAdvanced Physics Research, EarlyView.
Light Cu substitution in the quadruple perovskite BiMn7‐xCuxO12 progressively suppresses monoclinic distortion while enhancing local structural disorder and weakening magnetic order. Unexpected Cu site preferences inferred experimentally contrast with first‐principles predictions, revealing a delicate competition among local bonding, structural ...
Cheng Peng   +6 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

open access: yesThe Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo   +5 more
wiley   +1 more source

Tracing the evolutionary history of the morpho‐anatomy of baculum in primates

open access: yesThe Anatomical Record, EarlyView.
Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani   +3 more
wiley   +1 more source

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