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Search Results: 1 - 10 of 84601 matches for " Casali W "
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A phylogenomic analysis of the Actinomycetales mce operons
Nicola Casali, Lee W Riley
BMC Genomics , 2007, DOI: 10.1186/1471-2164-8-60
Abstract: The M. tuberculosis mce loci each include two yrbE and six mce genes, which have homology to ABC transporter permeases and substrate-binding proteins, respectively. Operons with an identical structure were identified in all Mycobacterium species examined, as well as in five other Actinomycetales genera. Some of the Actinomycetales mce operons include an mkl gene, which encodes an ATPase resembling those of ABC uptake transporters. The phylogenetic profile of Mkl orthologs exactly matched that of the Mce and YrbE proteins. Through topology and motif analyses of YrbE homologs, we identified a region within the penultimate cytoplasmic loop that may serve as the site of interaction with the putative cognate Mkl ATPase. Homologs of the exported proteins encoded adjacent to the M. tuberculosis mce operons were detected in a conserved chromosomal location downstream of the majority of Actinomycetales operons. Operons containing linked mkl, yrbE and mce genes, resembling the classic organization of an ABC importer, were found to be common in Gram-negative bacteria and appear to be associated with changes in properties of the cell surface.Evidence presented suggests that the mce operons of Actinomycetales species and related operons in Gram-negative bacteria encode a subfamily of ABC uptake transporters with a possible role in remodeling the cell envelope.A putative Mycobacterium tuberculosis virulence gene, named mce1A, was originally identified because its expression in Escherichia coli enabled this noninvasive bacterium to enter mammalian epithelial cells [1]. Sequencing of the M. tuberculosis genome revealed that mce1A (Rv0169) was part of an operon that encoded eight putative membrane-associated proteins: YrbEA-B, MceA-F [2,3]. This operon is present four times in the M. tuberculosis genome (mce1-4). Homologs of the genes adjacent to the mce1 locus, Rv0175-Rv0178, are located downstream of the mce3 and mce4 gene clusters (Figure 1) [3].Continued interest in the function
Caracterización y modelación de las distribuciones de tama o de burbujas en celdas de flotación con agitación mecánica
Vallebuona, G.,Casali, A.,Kracht, W.
Revista de Metalurgia , 2005,
Abstract: In tbis work, bubble size distribution is determined for tests in a batch flotation cell, for different impeller speed and air flowrate. Bubbles are sampled and their sizes are measured using image analysis. Size distributions by surface are expressed as cumulative percent passing as well as percent retained. The distributions show a common shape for all tests and are represented with a unique model, selected due to its goodness of fit. This model corresponds to an equation used in heavy media separation and considers two parameters: X50, the 50 % passing size, and 1, an adjustable parameter. The correlation coefficient for all tests averages 0.999 for the cumulative distributions and 0.912 for the retained distributions. En este trabajo se determina la distribución de tama o de las burbujas en una celda de flotación de laboratorio, para pruebas en las que se varió el flujo de aire y la agitación. Los tama os de burbuja se miden vía análisis de imágenes obtenidas en un dispositivo de toma de muestras y sus distribuciones se expresan como distribución en superficie, como porcentaje acumulado bajo el tama o y como porcentaje retenido. Las distribuciones muestran una forma equivalente para todas las pruebas y se representan con un modelo único, seleccionado por bondad de ajuste, que corresponde a una ecuación utilizada en separación por medios densos. El modelo tiene dos parámetros: X50, tama o bajo el cual se encuentra el 50 % de la superficie de burbujas y 1, parámetro por ajustan El coeficiente de correlación promedio de todas las pruebas resulta de 0,999 para las distribuciones acumuladas y de 0,912 para las distribuciones retenidas
Ethnopharmacological study of medicinal plants used in Rosário da Limeira, Minas Gerais, Brazil
Oliveira, Helaine B. de;Kffuri, Carolina W.;Casali, Vicente W. D.;
Revista Brasileira de Farmacognosia , 2010, DOI: 10.1590/S0102-695X2010000200020
Abstract: in order to evaluate the popular knowledge on the use of medicinal plants and the contribution in the preservation of medicinal flora, the present work aims to rescue and organize such knowledge on medicinal species and its relation with therapeutic uses, in the city of rosario de limeira, mg. data were collected january to march, 2007. fifteen informants, all resident in urban and agricultural communities, were asked about their knowledge on medicinal plants. the current survey revealed the use of 66 species belonging to 33 families (asteraceae with the major number of species, followed by lamiaceae, rutaceae, and bignoniaceae) used in the treatment of various diseases. 44,3% of them grow spontaneously and 55,7% are cultivated. the main vegetal part used in the preparation of the phytotherapy was the leaf, and the most common preparation was the infusion. the most used species were: baccharis trimera, mentha sp., plantago major, chenopodium ambrosioides and symphytum officinale.
CONTACTO INTERéTNICO EN EL NORTE DE TIERRA DE FUEGO: PRIMERA APROXIMACIóN A LAS ESTRATEGIAS DE RESISTENCIA SELK'NAM
CASALI,ROMINA;
Magallania (Punta Arenas) , 2008, DOI: 10.4067/S0718-22442008000200003
Abstract: this paper presents a discussion about the possibilities and / or capabilities to develop a strategy of resistance to colonisation by the selk'nam, towards the end of the nineteenth century. we analyzed primary sources (consulted on file with the museo del fin del mundo, ushuaia, tierra del fuego) ethnographic, historical and etnohistorical, to propose a first approach to the problem. it suggests a pattern of resistance considering variables concerning both the power devices, as well as the agency of the conquered. it also examines the determinism of the forms of colonization to the potential responses of aborigines.
CONTACTO INTERéTNICO EN EL NORTE DE TIERRA DE FUEGO: PRIMERA APROXIMACIóN A LAS ESTRATEGIAS DE RESISTENCIA SELK'NAM INTERETHNICAL CONTACTS IN THE NORTH OF TIERRA DEL FUEGO: FIRST APPROACH TO THE SELK'NAM RESISTANCE STRATEGY
ROMINA CASALI
Magallania , 2008,
Abstract: Se plantea una discusión acerca de las posibilidades y/o capacidades de elaborar una estrategia de resistencia ante la colonización por parte de los Selk'nam, hacia fines del siglo XIX. Se analizaron fuentes primarias (consultadas en el archivo del Museo del Fin del Mundo, Ushuaia, Tierra del Fuego) etnográficas, históricas y etnohistóricas, a fin de proponer una primera aproximación a la problemática. Se sugiere un esquema de resistencia considerando variables concernientes tanto a los dispositivos de poder, como también a la agencia del conquistado, examinándose el determinismo de las formas de la colonización ante las potenciales respuestas de los aborígenes. This paper presents a discussion about the possibilities and / or capabilities to develop a strategy of resistance to colonisation by the Selk'nam, towards the end of the nineteenth century. We analyzed primary sources (consulted on file with the Museo del Fin del Mundo, Ushuaia, Tierra del Fuego) ethnographic, historical and etnohistorical, to propose a first approach to the problem. It suggests a pattern of resistance considering variables concerning both the power devices, as well as the agency of the conquered. It also examines the determinism of the forms of colonization to the potential responses of Aborigines.
Essential oil in the taxonomy of Ocimum selloi benth
Martins, Ernane R.;Casali, Vicente W. D.;Barbosa, Luiz C. A.;Carazza, Fernando;
Journal of the Brazilian Chemical Society , 1997, DOI: 10.1590/S0103-50531997000100006
Abstract: chemical composition analysis of the essential oil from the leaves and flowers of two accessions of ocimum selloi benth, cultivated at the federal university of vi?osa was carried out. for accession a the major component was identified as estragole and represented 94,95% and 92,54% of the oil from the leaves and flowers respectively. for accession b, the oil from the leaves and flowers was constituted by 65,49% and 66,18% of methyleugenol, respectively. for both accessions several minor constituents were also identified. the phenotypic and chemical differences observed between these two accessions suggest the existence of two chemicaly distinct varieties for ocimum selloi benth.
Qualidade de frutos de tomate da cv. Santa Clara, mutante de fruto amarelo e seus híbridos F1
Rêgo, Elizanilda R. do;Finger, Fernando L.;Casali, Vicente W. D.;
Horticultura Brasileira , 1999, DOI: 10.1590/S0102-05361999000200006
Abstract: the determination of some physical and chemical attributes of red fruits from tomato cv. santa clara, a yellow mutant and the f1 hybrid, were based on b-carotene, lycopene, vitamin c, ph, fresh and dry weight matter, pericarp and fruit diameter, titrateable acidity and total soluble solids. ripe fruits of the yellow mutant showed reduced levels of b-carotene, lycopene and vitamin c, while fruits of the f1 hybrid showed levels of carotenoid pigments and vitamin c similar to the red fruit. both mutant and f1 ripe fruits showed lower ph levels than the red parentals. total fresh fruit and dry weight matter, pericarp and fruit diameter, and acidity were similar in the three genotypes studied. the total soluble-solids content of the pericarp was lower in the mutant and f1 fruits, whereas their concentration in the locule tissues was similar in all genotypes.
Controle químico de plantas daninhas na semeadura direta de tomate (Lycopersicon esculentum Mill.)
Ferreira, L. R.;Silva, J. F.;Casali, V. W. D.;Cond?, A. R.;
Planta Daninha , 1982, DOI: 10.1590/S0100-83581982000200004
Abstract: three assays were carried out to evaluate the effectiveness of several herbicides on direct seeded tomato. the compounds metribuzin, napropamide, chloramben, diphenamid, pebulate and trifluralin aplied separatly, at the dosage of .35; 3.40; 2.50; 2.00; 3.60 and .67 kg/ha respectively, and combined each one with metribuzin at the same dose ge were evaluated in two assays, one at vi?osa, mg and the other at domingos martins, es. one third assay was carried out at vi?osa, mg to evaluate the effectiveness of chloramben, napropamide, diphenamid and metr ibuzin at the dose of 3.40; 3.00; 5.00 and .70 kg/ha respectively, and pebulate at the dose of 4.32 and 1.76 kg/ha applied separated and combined with pebulate at mentioned dosages. all compounds showed some control of weeds, although the efficiency of each product was weed species dependant. only pebulate was efficient on cyperus rotundus control. bachiaria plantaginea and digitaria sanguinalis were better controled by chloramben, napropamide, diphenamid and trifluralin. metribuzin gave excelent control of bidens pilosa and galinsoga parviflora. the mixtures of metr ibuzin or pebula te wi th each herbicide sudied increased the efficience of control and the number of species controled. all compounds were tolerated by the tomato plants. no visible injury were observed at the doses studied.
Shrinking the room for invasive ventilation in hypercapnic respiratory failure
Scarpazza P, Incorvaia C, Melacini C, Cattaneo R, Bonacina C, Riario-Sforza GG, Casali W
International Journal of Chronic Obstructive Pulmonary Disease , 2013, DOI: http://dx.doi.org/10.2147/COPD.S41374
Abstract: inking the room for invasive ventilation in hypercapnic respiratory failure Rapid Communication (260) Total Article Views Authors: Scarpazza P, Incorvaia C, Melacini C, Cattaneo R, Bonacina C, Riario-Sforza GG, Casali W Published Date March 2013 Volume 2013:8 Pages 135 - 137 DOI: http://dx.doi.org/10.2147/COPD.S41374 Received: 10 December 2012 Accepted: 21 January 2013 Published: 15 March 2013 Paolo Scarpazza,1 Cristoforo Incorvaia,2 Chiara Melacini,1 Roberta Cattaneo,1 Cristiano Bonacina,1 Gian Galeazzo Riario-Sforza,2 Walter Casali1 1Pneumology Unit, Ospedale Civile, Vimercate, 2Pulmonary Rehabilitation, Istituti Clinici di Perfezionamento, Milan, Italy Abstract: Noninvasive ventilation (NIV) was introduced as an alternative to invasive mechanical ventilation for acute respiratory failure caused from exacerbations of chronic obstructive pulmonary disease in the 1980s, and its use gradually rose worldwide. Seventy-eight patients (57 males, mean age 78.3 ± 9.2 years) undergoing NIV were evaluated. Of them, 48 (62.3%) had acute hypercapnic respiratory failure because of a chronic obstructive pulmonary disease exacerbation, and the remaining 30 had acute hypercapnic respiratory failure from other causes, mainly cardiac failure. All patients were treated by NIV using the bi-level positive airway pressure set up at high pressure/high backup rate. NIV was successful in 67 subjects (85.9%) and the patients were discharged, 57 of whom continued NIV at home and ten had spontaneous breathing. NIV was unsuccessful in eleven patients, ten of whom died and one was successfully treated by invasive mechanical ventilation. Significant differences were detected for a higher basal Glasgow Coma Scale score in successfully treated patients (P = 0.007), a higher basal Acute Physiology and Chronic Health Evaluation score in unsuccessfully treated patients (P = 0.004), and a lower pH after 1 hour in unsuccessfully treated patients (P = 0.015). These findings show a very high rate of success of NIV in patients with acute hypercapnic respiratory failure not only from chronic obstructive pulmonary disease but also from cardiac failure. This suggests that the use of invasive mechanical ventilation may be further reduced, with a decrease in its known complications as well.
Interaction between CO2 assimilation and time after treatment of Spagneticola trilobata with Apis mellifica 6cH Interacci 3n entre asimilaci 3n de CO2 y tiempo despu s de tratamiento de Spagneticola trilobata con Apis mellifera 6cH Intera § £o entre asimila § £o de CO2 e tempos depois de tratamento de Spagneticola trilobata com Apis mellifera 6cH
M. R. Batirola Silva,V.W. Dias Casali,C. M. Bonato,N. Terra Santos
International Journal of High Dilution Research , 2006,
Abstract:
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