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A histological study of microsporogenesis in Tarenna gracilipes (Rubiaceae) Naturalis
Vinckier, S.; Smets, E..
We studied the microsporogenesis in Tarenna gracilipes (Hayata) Ohwi, with special attention to the mode of exine deposition and tapetum development. We based this research on light (LM), scanning electron (SEM) and transmission electron microscopic (TEM) observations of developing anthers of T. gracilipes, from the microspore mother cell stage towards anther dehiscence. Evidence is supplied that the microsporogenesis in T. gracilipes can be considered as simultaneous. Columellae, foot layer and tectum develop in a fibrillar matrix. Similar with earlier studies in Rubiaceae species, a single white line formed near the plasmalemma in the extra-apertural region. The developing endexine dilated into several white line centered lamellae at the apertures. An...
Tipo: Article / Letter to the editor Palavras-chave: Tarenna gracilipes; Rubiaceae; Microsporogenesis; Exine deposition; Tapetum development; Histology; Light microscopy; Scanning.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/407305
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Gills scanning images of the seawater fish Eugerres brasilianus (Gerreidae) BABT
Eiras-Stofella,Daura Regina; Charvet-Almeida,Patricia.
The gills of the adult fish, Eugerres brasilianus (Gerreidae) were analyzed in a scanning electron microscope. The stratified epithelium was uniform on all parts of the branchial arch. Concentric microridges were present on cells that form this epithelium and were mainly observed in the primary lamellae and pharyngeal region where mucous cells were also abundant. The ultrastructural features of E. brasilianus gills indicated that this was not a filtering species, and that the feeding habit included mainly the intake of small organisms. The results presently obtained agreed with other literature data which determined the feeding habit of this species by means of stomach content analysis and other aspects.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gill; Morphology; Scanning; Eugerres brasilianus.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400011
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Histology and Scanning Electron Microscopy of the Lower Respiratory Tract in the Adult Red Fox (Vulpes vulpes) International Journal of Morphology
Moussa,Eid A; Hassan,Said A.
The study was conducted on a total of three adult healthy freshly killed red foxes of both sexes weighing about 4-6 kg collected from Abou Rawwash, Giza, Egypt. The wall of trachea and bronchi formed of mucosa, submucosa and adventitia. The mucosa formed of pseudostratified columnar epithelium and lamina propria. The respiratory epithelium composed of tall columnar ciliated, goblet cells, basal cells, and neuroendocrine cells. Goblet cells account for about 20 to 30% of cells in the more proximal. Basal cells are relatively small triangular cells whose bases are attached to the basement membrane. The primary bronchiole is lined by simple columnar nonciliated to cuboidal epithelium containing some bronchiolar exocrine cells and some goblet cells....
Tipo: Journal article Palavras-chave: Scanning; Fox; Respiratory; Histology.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100042
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Optimisation de l’identification et du dénombrement du microphytoplancton avec le système couplé de numérisation et d’analyse d’images FlowCAM / ZooPhytoImage (système innovant). Action 9 – Livrable 2. Mise en oeuvre opérationnelle de l’outil FlowCAM-Zoo/PhytoImage dans le cadre de la surveillance REPHY. Résultats sur 12- 18 mois. Rapport final, février 2016 ArchiMer
Neaud-masson, Nadine; Lefebvre, Alain; Belin, Catherine; Gauthier, Emilie; Huguet, Antoine; Szidon, Antoine; Lefebvre, Arnaud; Cuvelliez, Rémi.
This deliverable includes several documents that reflect the operational implementation of the tool FlowCAM / ZooPhytoImage in the framework of REPHY. Among these documents, three reports make an assessment of the entire year 2015, which is not the case with other documents (Master 2 report issued in spring 2015, and minutes of meetings over the year). This summary will be limited to the findings of the three reports providing an updated view of the implementation of the tool. Work completed in 2015 for the operational implementation. The many scans performed in 2015 with the three FlowCAM present at Ifremer (Boulogne‐sur‐Mer, Arcachon and Nantes) allowed, one hand to feed the training sets of the tool FlowCAMZoo/PhytoImage, the other test its routine use....
Tipo: Text Palavras-chave: Phytoplancton; FlowCAM; Zoo/PhytoImage; Numérisation; Analyse d’images; Set d’apprentissage; Outil de reconnaissance; Architecture de données; Bancarisation; Quadrige; Phytoplankton; FlowCAM; Zoo/PhytoImage; Scanning; Image analysis; Training set; Recognition tool; Data architecture; Banking; Quadrige.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00363/47413/47409.pdf
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SELECTION OF EFFECTIVE SOFTWARE FOR THE ANALYSIS OF THE FRACTIONAL COMPOSITION OF THE CHAOTIC SEED LAYER USING THE EXAMPLE OF OILSEED RADISH REA
Tsytsiura,Yaroslav.
ABSTRACT This article generalises the peculiarities and efficiency of the use of three software packages, Digimizer image analysis software (v. 4.2), ImageJ2 version 2.0.0-rc-64 and WipFrag 3.3.14.0. These packages were used in studying the fractional composition of oilseed radish seeds for scanning in the mode of single-layer inseparable placement. The generalisation of the main caveats and features of the effective use of each of the software packages is made on the basis of detailed analysis of the features of each of package in the use to the features of the scan and the obtained scanned image The above-mentioned aspects are illustrated in detail and reservations about the options for the effective use of each package are represented. The efficiency...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fractional composition; Image analysis; Oilseed radish; Scanning; Seeds.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000200161
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Ultrastructure (SEM) of the gills of Prochilodus Scrofa Steindachner (Pisces, Teleostei) Zoologia
Eiras-Stofella,Daura Regina; Charvet-Almeida,Patricia.
Gills arches of the freshwater fish Prochilodus scrofa Steindachner, 1881 (Lt= 8.0-12.4cm) were removed to be analyzed in a scanning electron microscope. The morphology of the superficial structures of the gill filaments and pharyngeal region of the gills arches was discussed and related to their functional aspects. A great quantity of mucous secretory cells and of microridges, along with the pavement cell surface of the primary lamellae and branchial pharyngeal region, indicate the existence of a protection strategy of the respiratory lamellae. The chloride cells are abundant, specially on the distal portion of the primary lamellae, and bring out the osmo regulatory capacity of this species. This fish seems not to be a filtering one according to: its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gill morphology; Scanning; Freshwater fish; Prochilodus scrofa.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200001
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