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Registros recuperados: 6
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Bioprocessing of some agro-industrial residues for endoglucanase production by the new subsp.; Streptomyces albogriseolus subsp. cellulolyticus strain NEAE-J BJM
El-Naggar,Noura El-Ahmady; Abdelwahed,Nayera A.M.; Saber,Wesam I.A.; Mohamed,Asem A..
The use of low cost agro-industrial residues for the production of industrial enzymes is one of the ways to reduce significantly production costs. Cellulase producing actinomycetes were isolated from soil and decayed agricultural wastes. Among them, a potential culture, strain NEAE-J, was selected and identified on the basis of morphological, cultural, physiological and chemotaxonomic properties, together with 16S rDNA sequence. It is proposed that strain NEAE-J should be included in the species Streptomyces albogriseolus as a representative of a novel sub-species, Streptomyces albogriseolus subsp. cellulolyticus strain NEAE-J and sequencing product was deposited in the GenBank database under accession number JN229412. This organism was tested for its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agro-industrial residues; Endoglucanase production; Streptomyces albogriseolus; 16S rRNA; Scanning electron microscope.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200050
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Calcein staining of calcified structures in pearl oyster Pinctada margaritifera and the effect of food resource level on shell growth ArchiMer
Linard, Clementine; Gueguen, Yannick; Moriceau, Jacques; Soyez, Claude; Hui, Belinda; Raoux, Aurore; Cuif, Jean Pierre; Cochard, Jean-claude; Le Pennec, Marcel; Le Moullac, Gilles.
Marine mollusc shell growth has been widely measured using fluorochrome marking. In order to test the efficiency and reliability of calcein staining on P. margaritifera shells and pearls, the present study examined two administration methods, different concentrations and several immersion times.Immersion in a 150 mg.L-1 calcein solution for 12 h to 24 h appeared to be the best method for marking P. margaritifera shells. For pearl marking, injection of a 200 mg.L-1 calcein solution into the pearl pouch was the optimal method. Calcein marking was then used to measure the influence of food resource levels on the shell growth. Groups of 23-month-old P. margaritifera were fed at three trophic levels for two months. The two highest food levels tested (6 000...
Tipo: Text Palavras-chave: Bivalvia; Pearl; Shell; Growth; Scanning electron microscope.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00028/13907/11195.pdf
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Morphological Alterations of the Surfaces of Enamel and Dentin of Deciduous Teeth Irradiated with Nd:YAG, C0(2)and Diode Lasers International Journal of Morphology
Souza,Mónica Rodrigues de; Watanabe,Ii-Sei; Azevedo,Luciane H; Tanji,Edgar Y.
In this work, we studied the effects of C0(2), Nd:YAG and diode lasers on the enamel and dentin of deciduous human teeth. After the irradiations, the samples were duly prepared and set up on metallic bases, covered with gold and examined in the scanning electron microscope. The results showed that the irradiation with the C0(2) mode locked laser with 1.0 W power caused melting and irregularities with small cavities on the surface of the enamel. The irradiated area on the dentin surface appeared circular and well delimited, containing blocks of dentin and cracks. By using the pulsed Nd:YAG laser with 1.0 W mean power and 10 Hz frequency, the enamel surface presented granules of molten enamel, with a typical melting look. The irradiated dentin surface...
Tipo: Journal article Palavras-chave: Deciduous tooth; Enamel; Dentin; C0(2) laser; Nd:YAG laser; Diode laser; Scanning electron microscope.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000200021
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Remarks Using the SEM method Species Seeds of Gentiana occurring in Turkey Planta Daninha
ALÇITEPE,E.; ERKEN,S.; GÜLBAG,F.; ÖZZAMBAK,M.E..
ABSTRACT Seeds of eleven perennial Gentiana collected from Turkey were analyzed using the SEM method. Other species excluding G. septemfida, G. boissieri, G. gelida were studied for the first time. They were identified and compared in terms of seed characteristics and surface ornamentations. Major characteristics including the outer periclinal walls of testa, sculpting of inner periclinal walls, seed shape, seed and testa cell, wing cell size, thickness of testa wall and seed shape have been proposed for Turkey Gentiana. They are divided into different types, such as no wing, chalazal wing, incomplete discoid wing, complete discoid wing according to the outer periclinal walls of testa. Considering primary sculpting of seeds, irregularly striate and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gentiana; Seed-coat; Scanning electron microscope; Turkey.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100204
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The foliar trichomes of Hypoestes aristata (Vahl) Sol. ex Roem. & Schult var aristata (Acanthaceae) a widespread medicinal plant species in tropical sub-Saharan Africa: with comments on its possible phylogenetic significance Biol. Res.
Bhatt,A; Naidoo,Y; Nicholas,A.
The micromorphology of foliar trichomes of Hypoestes aristata var. aristata was studied using stereo, light and scanning microscopy (SEM). This genus belongs to the advanced angiosperm family Acanthaceae, for which few micromorphological leaf studies exist. Results revealed both glandular and non-glandular trichomes, the latter being more abundant on leaf veins, particularly on the abaxial surface of very young leaves. With leaf maturity, the density of non-glandular trichomes decreased. Glandular trichomes were rare and of two types: long-stalked capitate and globose-like peltate trichomes. Capitate trichomes were observed only on the abaxial leaf surface, while peltate trichomes were distributed on both adaxial and abaxial leaf surfaces.
Tipo: Journal article Palavras-chave: Acanthaceae; Glandular trichomes; Hypoestes aristata var. aristata; Medicinal plant; Scanning electron microscope.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400004
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Ultrastructure study of Vanda Kasem's Delight orchid's protocorm-like body Horticultura Brasileira
Gnasekaran,Pavallekoodi; Mahmood,Maziah; Subramaniam,Sreeramanan.
ABSTRACT Growing orchids has been classified as an international business since it covers 8% of the world floriculture trade. Thus, large-scale micropropagation of orchid using tissue culture techniques and improvement of some essential traits, such as resistances to various diseases and pests, and tolerances to environmental stresses, such as low temperatures and low light intensities, via genetic engineering acknowledged the orchids as one of the top ten cut flowers. Protocorm-like bodies (PLBs) are excellent explants for clonal propagation, artificial seeds development and genetic engineering since they are organized and easily regenerable somatic embryos that propagate rapidly. Vanda Kasem's Delight hybrid orchid's PLBs derived from shoot tip culture...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vanda Kasem's Delight; Morphology; Scanning electron microscope; Transmission electron microscope..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000300333
Registros recuperados: 6
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