Larch
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Larch : uma alternativa para especificação formal
Pesquisas recentes na área de especificação são enfáticas no use pratico de especificações formais no projeto de programas. Uma maneira de satisfazer isto, e providenciando linguagens de especificação que sejam acessíveis simultaneamente a projetistas, a especificadores e a programadores. A abordagem Larch esta orientada a especificação de módul
Publicado em: 2010
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2. Contribuições para verificação automática de applets javacard
O grande crescimento do uso de smart cards (por bancos, companhias de transporte, celulares, etc) trouxe um fato importante, que deve ser considerado: a necessidade de ferramentas que possam ser usadas para verificar os cartões, para que se possa garantir a corretude de seu software. Como a grande maioria dos cartões desenvolvidos hoje em dia usa a t
Publicado em: 2004
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3. RNA editing of larch mitochondrial tRNA(His) precursors is a prerequisite for processing.
Larch mitochondria contain a'native'tRNAHis which is absent from angiosperms. Sequence comparisons of genomic DNA and cDNA obtained from unprocessed primary transcripts of the larch mitochondrial gene trnH encoding this tRNA revealed three nucleotide discrepancies. These three nucleotide alterations, in the acceptor stem, D stem and anticodon stem respective
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4. Xylanolytic Activity of Clostridium acetobutylicum
Of 20 strains of Clostridium spp. screened, 17 hydrolyzed larch wood xylan. Two strains of Clostridium acetobutylicum, NRRL B527 and ATCC 824, hydrolyzed xylan but failed to grow on solid media with larch xylan as the sole carbon source; however, strain ATCC 824 was subsequently found to grow on xylan under specified conditions in a chemostat. These two stra
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5. Tissue-Specific and Development-Dependent Accumulation of Phenylpropanoids in Larch Mycorrhizas.
The tissue-specific and development-dependent accumulation of secondary products in roots and mycorrhizas of larch (Larix decidua Mill.; Pinaceae) was studied using high-performance liquid chromatography and histochemical methods. The compounds identified were soluble catechin, epicatechin, quercetin 3-O-[alpha]-rhamnoside, cyanidin- and peonidin 3-O-[beta]-
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6. Fermentation of mucin and plant polysaccharides by strains of Bacteroides from the human colon.
Ten Bacteroides species found in the human colon were surveyed for their ability to ferment mucins and plant polysaccharides ("dietary fiber"). A number of strains fermented mucopolysaccharides (heparin, hyaluronate, and chondroitin sulfate) and ovomucoid. Only 3 of the 188 strains tested fermented beef submaxillary mucin, and none fermented porcine gastric
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7. Production, characterization, and partial amino acid sequence of xylanase A from Schizophyllum commune.
Xylanase A, one of several extracellular xylanases produced by Schizophyllum commune strain Delmar when grown in submerged culture with spruce sawdust as carbon source, was purified 43-fold in 25% yield with respect to total xylanase activity. Although some polysaccharide was strongly bound to the purified enzyme, the complex could be dissociated by sodium d
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8. Purification and characterization of two thermostable acetyl xylan esterases from Thermoanaerobacterium sp. strain JW/SL-YS485.
Two acetyl esterases (EC 3.1.1.6) were purified to gel electrophoretic homogeneity from Thermoanaerobacterium sp. strain JW/SL-YS485, an anaerobic, thermophilic endospore former which is able to utilize various substituted xylans for growth. Both enzymes released acetic acid from chemically acetylated larch xylan. Acetyl xylan esterases I and II had molecula
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9. A β-l-Arabinopyranosidase from Streptomyces avermitilis Is a Novel Member of Glycoside Hydrolase Family 27*
Arabinogalactan proteins (AGPs) are a family of plant cell surface proteoglycans and are considered to be involved in plant growth and development. Because AGPs are very complex molecules, glycoside hydrolases capable of degrading AGPs are powerful tools for analyses of the AGPs. We previously reported such enzymes from Streptomyces avermitilis. Recently, a
American Society for Biochemistry and Molecular Biology.
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10. Census of the Bacterial Community of the Gypsy Moth Larval Midgut by Using Culturing and Culture-Independent Methods
Little is known about bacteria associated with Lepidoptera, the large group of mostly phytophagous insects comprising the moths and butterflies. We inventoried the larval midgut bacteria of a polyphagous foliivore, the gypsy moth (Lymantria dispar L.), whose gut is highly alkaline, by using traditional culturing and culture-independent methods. We also exami
American Society for Microbiology.
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11. Production of xylanase by the ruminal anaerobic fungus Neocallimastix frontalis.
Xylanase (1,4-beta-D-xylan xylanohydrolase, EC 3.2.1.8) production was investigated in the ruminal anaerobic fungus Neocallimastix frontalis. The enzyme was released principally into the culture fluid and had pH and temperature optima of 5.5 and 55 degrees C, respectively. In the presence of low concentrations of substrate, the enzyme was stabilized at 50 de
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12. Enzymic Analysis of Feruloylated Arabinoxylans (Feraxan) Derived from Zea mays Cell Walls I 1: Purification of Novel Enzymes Capable of Dissociating Feraxan Fragments from Zea mays Coleoptile Cell Wall
Three novel β-xylan xylanohydrolases capable of dissociating ferulated arabinoxylan (Feraxan) from maize (Zea mays L. hybrid B73 × Mo17) coleoptile sections and two conventional β-xylan xylanohydrolases (xylanases) were purified from a Bacillus subtilis industrial enzyme preparation (Novo Ban L-120). The Feraxan-dissociating enzymes (designated as feraxan