Results 91 to 100 of about 26,502 (258)

PARTICIPACION DE SEÑALES QUIMICAS EN EL RECONOCIMIENTO Y DISCRIMINACION DE SEXOS EN BOA CONSTRICTOR OCCIDENTALIS (SERPENTES, BOIDAE) PARTICIPATION OF CHEMICAL CUES IN CONSPECIFIC DETECTION AND SEXUAL DISCRIMINATION IN BOA CONSTRICTOR OCCIDENTALIS (SERPENTES, BOIDAE)

open access: yesGayana, 2001
La presencia de una feromona sexual en los ofidios permite el reconocimiento de las especies y estimula el cortejo en los machos. El comportamiento de los boídeos en el contexto de la comunicación quimiosensorial es conocido en representantes del género ...
Margarita Chiaraviglio   +1 more
doaj  

Spotlight on the Nucleotide: Solid‐State NMR for the Investigation of ATP Hydrolysis in the ATPase SmsC

open access: yesChemistry – A European Journal, EarlyView.
Nucleotide‐detected solid‐state NMR has been applied to probe nucleotide conformations and dynamics during ATP hydrolysis using the dimeric P‐loop ATPase SmsC as a model protein. The different stages of ATP hydrolysis have been mimicked by ATP analogues for which different degrees of conformational heterogeneity have been observed. ABSTRACT Solid‐state
Nina Wehr   +7 more
wiley   +1 more source

Twenty-eight new and significant departmental reptile records for Paraguay

open access: yesActa Zoológica Lilloana
Twenty-eight new distribution records are reported for twenty-seven species of Paraguayan reptiles. Ten of these species are considered threatened at the national level (6 EN, 2 VU, 2 DD).
Paul Smith   +14 more
doaj   +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

Biophysical processes of morphogenesis in lizard lungs

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The lungs of squamate reptiles (lizards and snakes) are highly diverse, exhibiting single chambers, multiple chambers, transitional forms with two to three chambers, along with a suite of other anatomical features, including finger‐like epithelial projections into the body cavity known as diverticulae.
Kaleb Hill   +9 more
wiley   +1 more source

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

Latitudinal effect on the structure of snake–prey interaction networks is mediated by snake species richness

open access: yesEcography, EarlyView.
Despite the growing number of studies on trophic networks in recent decades, there are still important gaps in our understanding of how these networks are structured across broad environmental gradients. These gaps are even greater in some groups of terrestrial vertebrates, such as snakes, requiring a cohesive synthesis of their broader trophic ...
Daniela Pinto‐Coelho   +4 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

Dynamics of Heparin Translocations Through Solid‐State Nanopores

open access: yesELECTROPHORESIS, EarlyView.
Carbohydrates can be detected with solid‐state nanopores, but their kinetics of voltage‐driven passage are fast. To better understand the dynamics of passage of these biomolecules and the role of electrophoresis and electroosmosis, we studied the translocation characteristics of heparin as a function of salt concentration, pH and voltage polarity ...
Kexin Zhao   +5 more
wiley   +1 more source

A Review of Overcurrent Protection in Smart Grids Under Cyber‐Physical Threats With a Cyber‐Physical Evaluation Framework

open access: yesEnergy Science &Engineering, EarlyView.
By manipulating current and voltage measurements, an assailant can induce unwanted relay action while attempting to avoid detection. Detecting advanced cyber intrusions in power protection environments requires specialised data analysis and anomaly detection methods.
Feras Alasali   +6 more
wiley   +1 more source

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