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Search Results: 1 - 10 of 19449 matches for " Claudio Rosa; "
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Cabrini, Katia Teresinha;Gallo, Claudio Rosa;
Scientia Agricola , 1999, DOI: 10.1590/S0103-90161999000100028
Abstract: the aim of this research was the evaluation of yeast species present in the fermentation process for alcohol production. yeast identification was carried out during a semester in the cropping season of 94/95 in the usina da pedra at serrana - sp . samples of primary juice, must and yeast cream were monthly collected. the identification of isolated yeasts was carried out according to numerical taxonomy proposed by griffiths (1981) and 72 yeast species, belonging to 5 genera, were identified. the saccharomyces cerevisiae species: s. uvarum (s. cerevisiae) was the dominant yeast in the sugar cane industry unit studied, and the saccharomyces genus, was the dominant one.
Cabrini Katia Teresinha,Gallo Claudio Rosa
Scientia Agricola , 1999,
Abstract: Com o objetivo de se obter um levantamento das espécies de leveduras presentes no processo de fermenta o para a produ o de álcool, procedeu-se a identifica o de leveduras durante um semestre da safra 94/95 na Usina da Pedra no município de Serrana - SP, utilizando-se amostras de caldo primário, mosto e leite de leveduras coletadas mensalmente. A identifica o das leveduras isoladas foi realizada de acordo com a taxonomia numérica proposta por Griffiths (1981), sendo que 72 leveduras, pertencentes a 5 gêneros foram identificadas. A espécie Saccharomyces cerevisiae: S. uvarum (S. cerevisiae) foi a levedura dominante na unidade industrial pesquisada e o gênero Saccharomyces, o de maior incidência.
Energy Recovery from End-of-Life Tyres: Untapped Possibility to Reduce CO2 Emissions
Ilze Dzene, Claudio Rochas, Dagnija Blumberga, Marika Rosa, Andris Erdmanis
Scientific Journal of Riga Technical University. Environmental and Climate Technologies , 2010, DOI: 10.2478/v10145-010-0015-6
Abstract: In this paper the possibility to reduce CO2 emissions by energy recovery from waste tyres is discussed. The objective of the study is to analyze the end-of-life tyre market in Latvia, to assess the amount of used tyres available and to calculate the potential reduction of CO2 emissions by energy recovery from tyres in mineral products industry. Calculation results show that an improved collection and combustion of end-of-life tyres in the cement industry can save up to 17% of the present CO2 emissions in the mineral products industry.
From Murine to Human Nude/SCID: The Thymus, T-Cell Development and the Missing Link
Rosa Romano,Loredana Palamaro,Anna Fusco,Leucio Iannace,Stefano Maio,Ilaria Vigliano,Giuliana Giardino,Claudio Pignata
Clinical and Developmental Immunology , 2012, DOI: 10.1155/2012/467101
Abstract: Primary immunodeficiencies (PIDs) are disorders of the immune system, which lead to increased susceptibility to infections. T-cell defects, which may affect T-cell development/function, are approximately 11% of reported PIDs. The pathogenic mechanisms are related to molecular alterations not only of genes selectively expressed in hematopoietic cells but also of the stromal component of the thymus that represents the primary lymphoid organ for T-cell differentiation. With this regard, the prototype of athymic disorders due to abnormal stroma is the Nude/SCID syndrome, first described in mice in 1966. In man, the DiGeorge Syndrome (DGS) has long been considered the human prototype of a severe T-cell differentiation defect. More recently, the human equivalent of the murine Nude/SCID has been described, contributing to unravel important issues of the T-cell ontogeny in humans. Both mice and human diseases are due to alterations of the FOXN1, a developmentally regulated transcription factor selectively expressed in skin and thymic epithelia.
A Phase-Offset Estimation Method for InSAR DEM Generation Based on Phase-Offset Functions
José Claudio Mura,Muriel Pinheiro,Rafael Rosa,Jo?o Roberto Moreira
Remote Sensing , 2012, DOI: 10.3390/rs4030745
Abstract: This paper presents a novel method for estimating the absolute phase offset in interferometric synthetic aperture radar (SAR) measurements for digital elevation model (DEM) generation. The method is based on “phase-offset functions (POF),” relating phase offset to topographic height, and are computed for two different overlapping interferometric data acquisitions performed with considerably different incidence angles over the same area of interest. For the purpose of extended mapping, opposite viewing directions are preferred. The two “phase-offset functions” are then linearly combined, yielding a “combined phase-offset function (CPOF)”. The intersection point of several straight lines (CPOFs), corresponding to different points in the overlap area allows for solving the phase offset for both acquisitions. Aiming at increasing performance and stability, this intersection point is found by means of averaging many points and applying principal component analysis. The method is validated against traditional phase offset estimation with corner reflectors (CR) using real OrbiSAR-1 data in X- and P-band.
High resolution melting analysis for a rapid identification of heterozygous and homozygous sequence changes in the MUTYH gene
Rossella Tricarico, Francesca Crucianelli, Antonio Alvau, Claudio Orlando, Roberta Sestini, Francesco Tonelli, Rosa Valanzano, Maurizio Genuardi
BMC Cancer , 2011, DOI: 10.1186/1471-2407-11-305
Abstract: MUTYH coding sequence and UTRs were analyzed by both HRMA and sequencing on 88 leukocyte genomic DNA samples. Twenty-six samples were also examined by SSCP. Experiments were performed both with and without mixing the test samples with wild-type DNA.The results show that all MUTYH sequence variations, including G > C and A > T homozygous changes, can be reliably identified by HRMA when a condition of artificial heterozygosity is created by mixing test and reference DNA. HRMA had a sensitivity comparable to sequencing and higher than SSCP.The availability of a rapid and inexpensive method for the identification of MUTYH sequence variants is relevant for the diagnosis of colorectal cancer susceptibility, since the MAP phenotype is highly variable.Colorectal carcinoma (CRC) is the second most common cause of cancer-related mortality in developed countries. About 1% of CRCs arise in individuals affected with familial adenomatous polyposis. This condition can be caused by mutations in at least 2 distinct genes: APC, implicated in the autosomal dominant form, and MUTYH, which is involved in MUTYH-associated polyposis (MAP: MIM#608456). MAP is transmitted as an autosomal recessive trait due to biallelic mutations of the MUTYH gene, whose product is a DNA glycosylase that removes adenine from A?8-oxoG as part of the base excision repair process [1].MAP patients are homozygotes or compound heterozygotes for mutations of the MUTYH gene, that is comprised of 16 exons. Two missense base substitutions, c.536A > G (p.Tyr179Cys) and c.1187G > A (p.Gly396Asp), located in exons 7 and 13, respectively, account for about 75% of pathogenic MUTYH allelic variants reported among Caucasians [2]. In addition, other recurrent MUTYH mutations have been identified in Pakistani, Dutch, Portuguese and Japanese patients [3,4]. The remaining fraction of MUTYH variants identified in MAP patients is highly heterogeneous and can be located along the whole coding sequence.The identification of MUTYH g
Modelagem Sísmica via métodos das diferen?as finitas: caso da bacia do Amazonas
Fernandes, Lindemberg Lima;Cruz, Jo?o Carlos Ribeiro;Blanco, Claudio José Cavalcante;Barp, Ana Rosa Baganha;
Acta Amazonica , 2009, DOI: 10.1590/S0044-59672009000100015
Abstract: this paper discusses the seismic modeling in medium with strong discontinuities in its physical properties. the approach takes in consideration the existences diffractions and multiple reflections in the analyzed medium, which, at that case, is the amazon basin. the stability and boundary conditions of modeling were analyzed by the method of the finite differences. sedimentary rocks deposited since the ordovician to the present, reaching depth up to 5 km. the bodies of diabasic between the paleozoic sediments are layers reaching thickness of hundred meters, which add to 90.000 km3, form the geology of the amazon basin. the occurrence of these structures is responsible for multiple reflections during the propagation of the seismic waves, which become impossible a better imaging of horizons located bellow the layers. the representation this geological situation was performed an (synthetic) acoustic velocity model. the numerical discretization scheme is based in a fourth order approximation of the acoustic wave equation in space and time the understanding of the wave propagation heterogeneous medium has improved for the application of the finite difference method. the method achieves a good resolution in the interpretation of seismic reflection events. the numerical results discusses in this paper have allowed to observed the influence of the multiple reflection in a high velocity layer. it increase a loss of energy and difficult the interpretation of the target. for this reason the integration of surface data with the well data is recommended, with the objective to get one better image of the targets below of the diabasic layer.
Efeito de herbicidas sobre agentes fitopatogênicos
Rosa, Daniel Dias;Basseto, Marco Antonio;Cavariani, Claudio;Furtado, Edson Luiz;
Acta Scientiarum. Agronomy , 2010, DOI: 10.4025/actasciagron.v32i3.3728
Abstract: in modern agriculture, several technologies have helped increase productivity, and herbicide is one of them. however, there are consequences linked to its use, such as the various effects on non-target organisms. the purpose of this work was to verify these effects on phytopathogenic agents, as well as assess the effect of glyphosate on diseases in transgenic soybean. there was a strong fungicide action using glyphosate herbicide as well as with the others evaluated in vitro regarding fungi tested. the same results were observed in plants in field conditions.
Identification and description of distinct B chromosomes in Cyphocharax modestus (Characiformes, Curimatidae)
Santos, Lessandra Viviane De Rosa;Foresti, Fausto;Martins, Cesar;Oliveira, Claudio;Wasko, Adriane Pinto;
Genetics and Molecular Biology , 2008, DOI: 10.1590/S1415-47572008000200019
Abstract: cytogenetic analyses were performed in cyphocharax modestus, collected at paranapanema river and tietê river (s?o paulo state, brazil). a karyotype with 2n = 54 chromosomes was observed in the animals from both brazilian freshwater river systems. one to four b chromosomes were also detected in individuals from the paranapanema river, which represents the probable first report of more than a single supernumerary element in a species of the curimatidae group. c-banding revealed centromeric and telomeric heterochromatin blocks in several chromosomes of the normal karyotype complement of c. modestus. moreover, while some b chromosomes were characterized by the complete absence of c-bands, others were totally heterochromatic. although there was a prevalence of b chromosomes in males of c. modestus, at least one supernumerary element was found in males and/or females of several other populations of the species, which suggests that the presence of these chromosomes seems to represent a general trait of c. modestus. a possible origin of the described b chromosomes may be related to the occurrence of a chromosome non-disjunction followed by the loss of euchromatic segments, an event that should have occurred in chromosomes that present conspicuous centromeric heterochromatic blocks and even in chromosomes that lack c-bands in this region, resulting in small supernumerary elements.
Nucleotide sequence, genomic organization and chromosome localization of 5S rDNA in two species of Curimatidae (Teleostei, Characiformes)
Santos, Lessandra Viviane de Rosa;Foresti, Fausto;Wasko, Adriane Pinto;Oliveira, Claudio;Martins, Cesar;
Genetics and Molecular Biology , 2006, DOI: 10.1590/S1415-47572006000200009
Abstract: the 5s ribosomal dna (5s rdna) of higher eukaryotes is organized in repeat units of tandem arrays composed of a 5s rdna coding region, conserved even among non-related taxa, and a variable non-transcribed spacer sequence (nts). to contribute to knowledge on the organization and evolution of vertebrate 5s rdna we used pcr, nucleotide sequencing, southern blot hybridization and chromosome fluorescence in situ hybridization (fish) to investigate 5s rdna tandem repeats in the south american curimatidae fish steindachnerina insculpta and cyphocharax modesta. 5s rdna repeats of 180 base pairs (bp) from both species were pcr-generated and sequenced evidencing the shortest 5s rdna monomer so far described in eukaryote species. southern blotting revealed that both species contained two tandem 5s rdna classes, the pcr amplified fragment composed of 180 bp monomers and a class of 1600 bp monomers not detected by pcr. chromosome mapping of the 5s rdna repeats identified a major locus in both species and a second minor locus only in c. modesta. the southern blot and chromosome mapping data indicate the presence of different types of 5s rdna tandem repeats in the curimatidae genome.
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