Results 121 to 130 of about 102,132 (263)

Tasa de oviposición de la raya marmolada Sympterygia bonapartii (Elasmobranchii, Rajidae) (Müller & Henle, 1841) mantenida en cautiverio [PDF]

open access: yes, 2009
Se registró la tasa de oviposición de Symperygia bonapartii en cautiverio. En un período de un año una hembra depositó 152 ovicápsulas a una tasa de 0.4 huevos por día y la otra depositó 200 ovicápsulas a una tasa de 0.5 huevos por día.The oviposition ...
Jañez, Julieta A., Sueiro, Maria Cruz
core  

The dental plate on bichir pectoral fins: A unique dermal skeletal element bearing individual odontodes with tooth‐like replacement

open access: yesJournal of Anatomy, EarlyView.
Pectoral fins of bichirs encompass the so‐called dental plates – unique dermal skeletal elements with individual odontodes identical to the oral teeth. Abstract The dermal skeleton appeared early in vertebrate evolution in the form of mineralized skin denticles composed of tooth‐like units—odontodes.
Tomáš Suchánek   +2 more
wiley   +1 more source

Welding skate with computerized controls [PDF]

open access: yes, 1968
New welding skate concept for automatic TIG welding of contoured or double-contoured parts combines lightweight welding apparatus with electrical circuitry which computes the desired torch angle and positions a torch and cold-wire guide angle ...
Wall, W. A., Jr.
core   +1 more source

TARÔ DO APRENDER EM MOVIMENTO: CONFETOS PRODUZIDOS POR JOVENS SKATISTAS DO LITORAL DO PIAUÍ

open access: yesLinguagens, Educação e Sociedade, 2017
Este trabalho dedica-se a descrever e analisar os dados produzidos na técnica sociopoética “Tarô do aprender em movimento”, experimentada por jovens skatistas da cidade de Luís Correia – PI.
KRÍCIA DE SOUSA SILVA   +1 more
doaj  

An Ecomorphological Description of Amblyraja radiata (Rajiformes: Rajidae) in Waters of Eastern Canada

open access: yesDiversity
We examine the distribution, habitat association, morphometrics, meristics, and reproductive attributes of Amblyraja radiata over much of its Canadian range, Grand Banks to Arctic waters.
David W. Kulka   +3 more
doaj   +1 more source

Molecular insights into electroreceptor ribbon synapses from differential gene expression in sturgeon lateral line organs

open access: yesJournal of Anatomy, EarlyView.
The expression of various genes involved in synapse development, stability and/or function was studied in developing mechanosensory neuromasts and electrosensory ampullary organs in sterlet sturgeon. Most were shared, including Slc17a8, Slc1a3 and Nrxn3, but Cbln18 was neuromast‐restricted and Tulp1 was ampullary organ‐restricted.
Alexander S. Campbell   +6 more
wiley   +1 more source

Dinámicas urbanas e identidades juveniles en el skate: una etnografía en la pista Orla do Guaíba

open access: yesEducación Física y Ciencia
Esta investigación se centró en jóvenes skaters urbanos, un campo dinámico y multifacético que refleja la diversidad de experiencias, prácticas culturales y formas de socialización. Reconociendo la pluralidad propia del concepto de juventud, este estudio
Daniel Giordani Vasques   +1 more
doaj   +1 more source

Identifying and Mapping Industrial Districts Through a Spatially Constrained Cluster‐Wise Regression Approach

open access: yesJournal of Regional Science, Volume 65, Issue 2, Page 403-428, March 2025.
ABSTRACT The aim of this article is to exploit an innovative spatial econometric approach to map and study the evolving patterns of industrial districts (IDs). The procedure can be classified as a k‐means cluster‐wise regression procedure and is designed to detect homogeneous areas of subcontracting activity.
Jacopo Canello   +3 more
wiley   +1 more source

Etnografía sensorial sobre la movilidad en la ciudad de Madrid vivida desde un minicruiser

open access: yesSociología del Deporte, 2022
Este artículo propone una etnografía sensorial crítica sobre la experiencia vivida al ir subido a un minicruiser (pequeña tabla de skate para pasear) por las calles de Madrid. De modo más específico, la etnografía ha tratado de registrar a partir de las
Raúl Sánchez García
doaj  

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