Results 111 to 120 of about 35,773 (251)

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

open access: yesChemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola   +2 more
wiley   +1 more source

Snakes [PDF]

open access: yes, 2014
This publication describes the biology, behavior, and economic impacts of snakes in Virginia.
Parkhurst, James A.
core  

Road extraction using snakes

open access: yes, 2004
This paper presents a methodology for semi-automatic road extraction from digital images using active contour models or snakes. Snakes was proposed almost two decades ago, consisting in a parametric curve controlled by photometric and geometric ...
de Oliveira, Rafael Montanhini Soares [UNESP]   +1 more
core   +1 more source

Dental development in the tropical gar (Atractosteus tropicus) and the evolution of vertebrate dentitions

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Dentitions have diversified enormously during vertebrate evolution, involving reductions, modifications, or allocations to prey seizing and processing regions. A combination of ancient and novel features related to dental and oropharyngeal apparatuses is found in extant lineages of non‐teleost fishes, such as the gars.
Anna Pospisilova   +4 more
wiley   +1 more source

Snakes

open access: yes, 1984
Describes poisonous and non-poisonous snakes in Virginia, how to avoid poisonous snakes, and reducing snake populations around homes and recreation ...
Clifford, Michael James, 1947-   +1 more
core  

Nonvenomous snakes: Wildlife Damage Management Series [PDF]

open access: yes, 1998
Snakes are probably the most feared and misunderstood animals known. There are over 200 species of snakes in the U. S., most of which (about 170) are non-venomous. Utah is home to 31 species of snakes. Of these, 24 are non-venomous.
Messmer, Terry A., Wiscomb, G. W.
core  

Oogenesis and germinal bed morphology of the brown anole (A. sagrei)

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher   +12 more
wiley   +1 more source

Post‐ovipositional staging series of the foveate, gold‐dust day gecko, Phelsuma laticauda (Gekkota: Squamata)

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Disorders affecting the fovea, a specialized pit in the human retina necessary for high acuity vision, represent a significant healthcare burden across the globe. Degenerative diseases (e.g., macular degeneration) and developmental conditions (e.g., albinism and aniridia) affecting the fovea can lead to irreversible, central vision ...
Andrew E. Wegerski   +6 more
wiley   +1 more source

GAN‐LSTM‐3D: An efficient method for lung tumour 3D reconstruction enhanced by attention‐based LSTM

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract Three‐dimensional (3D) image reconstruction of tumours can visualise their structures with precision and high resolution. In this article, GAN‐LSTM‐3D method is proposed for 3D reconstruction of lung cancer tumours from 2D CT images. Our method consists of three phases: lung segmentation, tumour segmentation, and tumour 3D reconstruction. Lung
Lu Hong   +12 more
wiley   +1 more source

Topologically adaptable snakes

open access: yes, 1995
We present a new class of deformable contours (snakes) and apply them to the segmentation of medical images. Our snakes are defined in terms of an affine cell image decomposition (ACID).
Demetri Terzopoulos, Tim Mcinerney
core  

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