Results 21 to 30 of about 10,342 (185)

Biometric data assessment on Xenopus laevis tadpoles

open access: yesJournal of Xenobiotics, 2016
Not ...
S. Slaby   +7 more
doaj   +1 more source

Anomalies & Tadpoles

open access: yes, 2000
We show that massless RR tadpoles in vacuum configurations with open and unoriented strings are always related to anomalies. RR tadpoles arising from sectors of the internal SCFT with non-vanishing Witten index are in one-to-one correspondence with conventional irreducible anomalies.
Bianchi, Massimo, Morales, Jose F.
openaire   +2 more sources

Computing Topological Indices and Polynomials for Line Graphs

open access: yesMathematics, 2018
A topological index is a number related to the atomic index that allows quantitative structure–action/property/toxicity connections. All the more vital topological indices correspond to certain physico-concoction properties like breaking point ...
Shahid Imran   +3 more
doaj   +1 more source

Phenotypic Variation Through Ontogeny: Thyroid Axis Disruption During Larval Development in the Frog Pleurodema borellii

open access: yesFrontiers in Ecology and Evolution, 2021
Studies of the effects of thyroid hormones on larval development in the frog Xenopus spp. have provided baseline information to identify developmental constraints and elucidate genetic and hormonal mechanisms driving development, growth, and life history
Marissa Fabrezi, Julio César Cruz
doaj   +1 more source

LOCAL TADPOLE GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2012
Tadpole galaxies have a giant star-forming region at the end of an elongated intensity distribution. Here we use SDSS data to determine the ages, masses, and surface densities of the heads and tails in 14 local tadpoles selected from the Kiso and Michigan surveys of UV-bright galaxies, and we compare them to tadpoles previously studied in the Hubble ...
Elmegreen, Debra Meloy   +5 more
openaire   +2 more sources

On the morphology of Plectrohyla chryses (Anura: Hylidae; Hylini), with comments on some controversial characters, phylogenetic relationships, and diagnosis of this species

open access: yesCaldasia, 2016
We describe the tadpole and juvenile of Plectrohyla chryses and conduct an analysis of skin thickness and a general phylogenetic analysis of the Hylini to determine the phylogenetic position of P. chryses. We found that P.
Moises Kaplan   +3 more
doaj   +1 more source

Bilateral tadpole pupils [PDF]

open access: yesNeurology, 2016
A 19-year-old man with congenital erythropoietic protoporphyria and without family history or prior migraine attacks had recurrent seizures, which were controlled on propofol. Eye examination performed while awake revealed nonreacting bilateral tadpole pupils (TPs) (figure), without other neurologic deficits.
Rajan, Vijayaraghavan   +2 more
openaire   +2 more sources

Modelling the connectome of a simple spinal cord

open access: yesFrontiers in Neuroinformatics, 2011
In this paper we develop a computational model of the anatomy of a spinal cord. We address a long-standing ambition of neuroscience to understand the structure-function problem by modelling the complete spinal cord connectome map in the two-day old ...
Roman eBorisyuk   +4 more
doaj   +1 more source

Scanning electron microscopy of the oral apparatus and buccopharyngeal cavity of Atelognathus salai larvae (Anura, Neobatrachia) [PDF]

open access: yesPhyllomedusa: Journal of Herpetology, 2006
The aim of this study is to describe the horny structures of the buccal apparatus and buccopharyngeal cavity of A. salai by means ofscanning electron microscopy (SEM), and to compare them to those of the other known species of Atelognathus and related ...
Dinorah D. Echeverría   +2 more
doaj  

Locomotion and survival of two sympatric larval anurans, Bufo gargarizans (Anura: Bufonidae) and Rana zhenhaiensis (Anura: Ranidae), after partial tail loss

open access: yesZoologia (Curitiba), 2014
Tadpoles of two sympatric anurans, Bufo gargarizans Cantor, 1842 and Rana zhenhaiensis Ye, Fei & Matsui, 1995, were used as model organisms to examine the effects of different levels of tail loss on swimming performance and survival.
Guo-Hua Ding, Zhi-Hua Lin, Li-Hua Zhao
doaj   +1 more source

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