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Search Results: 1 - 10 of 11 matches for " Rotili "
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Comparative Evaluation of Single-Channel MMSE-Based Noise Reduction Schemes for Speech Recognition
Emanuele Principi,Simone Cifani,Rudy Rotili,Stefano Squartini,Francesco Piazza
Journal of Electrical and Computer Engineering , 2010, DOI: 10.1155/2010/962103
Abstract: One of the big challenges in the field of Automatic Speech Recognition (ASR) consists in developing suitable solutions able to work properly also in adverse acoustic conditions, like in presence of additive noise and/or in reverberant rooms. Recently a certain attention has been paid to deeply integrate the noise suppressor in the feature extraction pipeline. In this paper, different single-channel MMSE-based noise reduction schemes have been implemented both in the frequency and cepstral domains and the related recognition performances evaluated on the AURORA2 and AURORA4 databases, therefore providing a useful reference for the scientific community.
Eficiência no uso de nitrogênio em cultivares de arroz irrigado Nitrogen use efficiency in lowland rice cultivars
Rodrigo R. Fidelis,Eliane A. Rotili,Manoel M. dos Santos,Hélio B. Barros
Revista Brasileira de Ciências Agrárias , 2011, DOI: 10.5039/agraria.v6i4a1359
Abstract: Objetivou-se com este trabalho estudar a eficiência e resposta ao uso de nitrogênio por cultivares de arroz em várzea irrigada no sudoeste do Estado de Tocantins. Os tratamentos envolveram nove cultivares comerciais de arroz (BRS-Ja an , Metica-1, Best-2000, BRSGO-Guará, BRS-Alvorada, BRA-01381, AN-Cambará, BRS 7-Taim e EPAGRI-109), que foram cultivadas em dois ambientes distintos. Para simular ambientes com baixo e alto nível de nitrogênio, foram utilizadas doses de 20 e 120 kg ha-1 de N, respectivamente. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repeti es. Por meio da produtividade de gr os, as cultivares foram classificadas quanto à eficiência no uso e resposta a aplica o de nitrogênio. N o foram identificadas cultivares eficientes quanto ao uso de nitrogênio e responsivas ao suprimento. As cultivares EPAGRI-109, BRSGO-Guará, BRS 7-Taim e BRA-01381 mostraram-se eficientes quanto ao uso de nitrogênio e n o responsivas à sua aplica o. The objective of this research was to study the efficiency and response of using nitrogen in lowland rice cultivars grown in the southwest of Tocantins, Brazil. The experiments involved nine commercial rice cultivars (BRS-Ja an , Metica-1, Best-2000, BRSGO-Guará, BRS-Alvorada, BRA-01381, AN-Cambará, BRS 7-Taim and EPAGRI-109), which were cropped in two distinct environments. In order to stimulate areas with high and low nitrogen levels, rates of 20 and 120 kg ha-1 of nitrogen were used, respectively. The experiments were carried out in a completely randomized block design, with four replicates. The cultivars were classified according to the use and response to the applied nitrogen. No cultivars were considered to be efficient in the use and responsive to the supply. The cultivars EPAGRI-109, BRSGO-Guará, BRS 7-Taim and BRA-01381 demonstrated efficiency in the use of nitrogen and not responsive to its application.
Composition, antioxidant capacity and quality of yellow passion fruit during storage Composi o, atividade antioxidante e qualidade do maracujáamarelo durante armazenamento
Maria Cristina Copello Rotili,Sidiane Coutro,Viviane Marcela Celant,Jessica Ariane Vorpagel
Semina : Ciências Agrárias , 2013,
Abstract: In this work, the contents of phenolic compounds, ?-carotene, ascorbic acid and antioxidant activity (DPPH and TEAC methods) were determined in the yellow passion fruit juice during storage at 5 and 24 ° C, at intervals of 10 days. The fruit quality during storage was determined, and the parameters weight loss, wrinkles, skin color and pathogenic degradation index were used. Samples of fruit at maturity stage with the skin color predominantly green were used for the tests. The results showed that total phenolic compounds, ?-carotene and antioxidant activity of the yellow passion fruit juice were not affected by storage temperature and the content of total phenolic compounds of the juice increased with storage time. It as demonstrated that the effects of high temperature during storage is much more evident and impacting the appearance of the fruit, which in the nutritional quality of the juice. The antioxidant activity of juice, expressed in kidnapping DPPH decreased during storage. Based on the microbiological quality, the shelf life of yellow passion fruit was extended to 20 days in refrigerated storage. Neste trabalho, os conteúdos de compostos fenólicos totais, ?-caroteno, ácido ascórbico e a atividade antioxidante (pelos métodos DPPH e TEAC) foram determinados no suco do maracujá-amarelo durante o armazenamento a 5 e 24 oC, em intervalos de 10 dias, durante 40 dias. A qualidade dos frutos foi determinada durante o armazenamento, tomando como parametros as variáveis perda de massa, enrugamento, cor da casca e o índice de degrada o por patógenos. Amostras de frutos em estádio de matura o com a cor da casca predominantemente verde, em início de amarelecimento, foram utilizadas nos ensaios. Os teores de compostos fenólicos totais e ?-caroteno, e a atividade antioxidante do suco do maracujá-amarelo n o foram influenciados pela temperatura de armazenamento. O conteúdo de compostos fenólicos totais do suco aumentou com o tempo de armazenamento. Os efeitos da temperatura de armazenamento foram mais evidentes e impactantes na aparência do fruto do que na qualidade nutricional do suco. A atividade antioxidante do suco, expressada em seqüestro do radical DPPH, diminuiu durante o armazenamento. Com base na qualidade microbiológica, a vida útil do maracujáamarelo se estendeu até 20 dias no armazenamento refrigerado.
"Shock and kill" effects of class I-selective histone deacetylase inhibitors in combination with the glutathione synthesis inhibitor buthionine sulfoximine in cell line models for HIV-1 quiescence
Andrea Savarino, Antonello Mai, Sandro Norelli, Sary El Daker, Sergio Valente, Dante Rotili, Lucia Altucci, Anna Palamara, Enrico Garaci
Retrovirology , 2009, DOI: 10.1186/1742-4690-6-52
Abstract: Given the inability of antiretroviral therapy (ART) to eradicate HIV-1 from the body (even after decade-long periods of therapy), and the absence of effective vaccines on the horizon, novel approaches to HIV-1 eradication are needed. To this end, the so-called "shock and kill" strategies have been proposed [1]. These strategies consist of inducing, through drugs, HIV-1 activation from quiescence (i.e. the "shock" phase), in the presence of ART (to block viral spread), followed by the elimination of infected cells (i.e. the "kill" phase), through either natural means (e.g. immune response, viral cytopathogenicity) or artificial means (e.g. drugs, monoclonal antibodies, etc.) [1]. For the "shock" phase, histone deacetylase inhibitors (HDACIs) have been proposed [2]. Histone deacetylases (HDACs) contribute to nucleosomal integrity by maintaining histones in a form that has high affinity for DNA [3]. Physiologically, this activity is counteracted by histone acetyl transferases (HATs) which are recruited to gene promoters by specific transcription factor-activating stimuli [3].Several of the currently available HDACIs activate HIV-1 from quiescence in vitro [4,5]. However, this activity is associated with a certain degree of toxicity [6], given that these inhibitors are not class-specific and compromise a large number of cellular pathways [7,8]. Class I HDACs comprise HDAC1-3 and 8; they are predominantly nuclear enzymes and are ubiquitously expressed [9]. Class II HDACs include HDAC4-7, 9 and 10 and shuttle between the nucleus and the cytoplasm [10,11]. HDACs are recruited to the HIV-1 promoter by several transcription factors, including NF-κB (p50/p50 homodimers), AP-4, Sp1, YY1 and c-Myc [12-14]. Identification of class/isoform-selective HDACIs with increased potency and lower toxicity [3] and drugs able to potentiate their effects is believed to be important for HIV-1 eradication.To identify novel HDACIs capable of activating HIV-1, we first tested the HIV-1 activati
Eficiência do uso e resposta à aplica??o de fósforo de cultivares de arroz em solos de terras altas
Rotili, Eliane Aparecida;Fidelis, Rodrigo Ribeiro;Santos, Manoel Mota dos;Barros, Hélio Bandeira;Pinto, Leandro Cardoso;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000300023
Abstract: this research's objective was to study the efficiency in the usage of phosphorus by rice cultivars in highland soils in the south of tocantins state. the experiments evaluated six commercial cultivars of rice (brs-bonan?a brs-caiapó, brs-sertaneja, brsmg-curinga, brsmg-conai and brs-primavera), grown in areas with high and low phosphorus application: 20 and 120 kg ha-1 of p2o5. the experiments were carried out in a completely randomized blocks design, with four replicates. based on grain yield, cultivars were classified in respect to the efficiency and response to phosphorus fertilization. the cultivar brs-bonan?a presented the highest phosphorus use efficiency and was the most responsive.
Uso de eugenol como anestésico em pacu
Rotili, Daniel Antonio;Devens, Maicon Adelio;Diemer, Odair;Lorenz, Evandro Kleber;Lazzari, Rafael;Boscolo, Wilson Rogério;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000300013
Abstract: the different practices used in fish breeding require intense handling, leading to fish stress. the use of anesthetics is important to overcome this problem. this study aimed at evaluating the impact of eugenol on the induction and anesthetic recovery of piaractus mesopotamicus from different weight classes. an experiment was carried out in a 5x5 factorial scheme, consisting of five weight classes (50 ± 5.61 g, 100 ± 9.36 g, 150 ± 12.29 g, 200 ± 12.73 g and 250 ± 18.77 g) and five eugenol concentrations (40 mg l-1, 80 mg l-1, 120 mg l-1, 160 mg l-1 and 200 mg l-1). the anesthesia induction was divided into four stages, according to the behavior of the anesthetized fish, being the duration of each stage recorded, and the desensitization moment and recovery time evaluated. a quadratic effect was observed at the anesthetic induction time, i.e., when the dose increased, the induction time decreased, tending to stabilize for increasing doses. the best results for anesthetic induction were observed at the 175 mg l-1, 208 mg l-1, 203 mg l-1, 240 mg l-1 and 225 mg l-1 concentrations, respectively for the 50 g, 100 g, 150 g, 200 g and 250 g weight classes. no interaction between the shortest induction time and the shortest recovery time was observed. thus, the doses which provided a lower induction time for the weight classes range between 175 mg l-1 and 240 mg l-1.
Eficiência no uso de fósforo de variedades de arroz cultivadas em solos de várzea irrigada
Rotili, Eliane Aparecida;Fidelis, Rodrigo Ribeiro;Santos, Manoel Mota dos;Castro Neto, Manoel Delintro de;Kichel, Elisangela;Cancellier, Eduardo Lopes;
Revista Ceres , 2010, DOI: 10.1590/S0034-737X2010000300019
Abstract: rice stands out as one of the most important crops in the world, because of its easy adaptability to distinct edaphoclimatic conditions. rice is cultivated and consumed worldwide and stands out by the large production and cultivation area, playing strategic economic and social roles. in brasil, the largest rice productions are obtained in lowland ecosystems. this work aimed to study the efficiency in phosphorus use by rice varieties in lowland areas in the southwest of tocantins state. the treatments involved eight rice commercial varieties (brs-ja?an?, best-2000, brs-guará, brs-alvorada, bra-01381, an-cambará, brs 7-taim and epagri-109), which were farmed in two distinct environments. in order to simulate environments with low and high phosphorus levels, p2o5 was used at the levels of 20 and 120 kg ha-1 respectively. the experiments were carried out in a randomized complete blocks design, with four replications. grain yield was used to classify the varieties regarding the efficiency in use and response to phosphorus application. was shown that only the variety brs-alvorada was efficient in using phosphorus and responsive to its application.
Divergência genética em genótipos de milho, no estado do Tocantins
Rotili, Eliane Aparecida;Cancellier, Leandro Lopes;Dotto, Michel Ant?nio;Peluzio, Joênes Mucci;Carvalho, Edmar Vinícius de;
Revista Ciência Agron?mica , 2012, DOI: 10.1590/S1806-66902012000300014
Abstract: this study aimed to evaluate the genetic diversity in maize genotypes in the southern of tocantins. the experiment was conducted at gurupi - to, brazil. the populations were obtained from 70 top cross, with crossing the lineages s6 with a tester, and using 11 cultivars as a witness, totaling 81 genotypes. the experimental design was randomized blocks with two replications. the characteristics assessed were: plant height, ear height, prolificacy, ear length, ear diameter, weight of 100 grains, hectoliter weight and grain yield. genetic divergence was assessed by multivariate procedures: mahalanobis distance, clustering methods of tocher and nearest neighbor. it was found genetic divergence among populations and the formation of non congruent groups between the method of tocher and nearest neighbor. the yield grain was the major contributor to the genetic diversity and the ear length was the least.
Evaluation of Green Buildings’ Overall Performance through in Situ Monitoring and Simulations
Francesco Asdrubali,Cinzia Buratti,Franco Cotana,Giorgio Baldinelli,Michele Goretti,Elisa Moretti,Catia Baldassarri,Elisa Belloni,Francesco Bianchi,Antonella Rotili,Marco Vergoni,Domenico Palladino,Daniele Bevilacqua
Energies , 2013, DOI: 10.3390/en6126525
Abstract: The evaluation of the overall performance of a green building is complex, since many construction, energy and environmental aspects have to be considered. The Umbria Region in Italy, through various public tenders, recently funded several residential buildings, innovative in terms of construction quality, green technologies and sustainable solutions, such as natural building materials, integrated sunspaces, PV (photovoltaic) modules and solar collectors, geothermal heat pumps, that had to be adopted to obtain the public contribution. The University of Perugia carried out an extended monitoring of these buildings, in order to verify the actual achievement of design objectives, to certify the real savings in terms of energy and environmental loads and to assess the indoor comfort conditions for occupants. In situ thermal, acoustical and lighting measurements were carried out for more than one year. Energy simulations were performed by means of codes which implement the algorithms required by the Italian Law. Moreover, a comparison between real consumptions and simulated energy requirements was carried out. Finally, the buildings were characterized from the environmental sustainability point of view, using the method adopted by the Umbria Region. This assessment was borrowed from ITACA (Institute for Innovation and Transparency in Government Procurement and Environmental Compatibility) procedure [an Italian procedure similar to Leadership in Energy and Environmental Design (LEED)] and consists of 20 worksheets, one for each different performance indicator, at the aim of carefully describing the environmental quality of the building.
PARP-1 Modulates Amyloid Beta Peptide-Induced Neuronal Damage
Sara Martire, Andrea Fuso, Dante Rotili, Italo Tempera, Cesare Giordano, Ivana De Zottis, Alessia Muzi, Patrizia Vernole, Grazia Graziani, Emanuela Lococo, Martina Faraldi, Bruno Maras, Sigfrido Scarpa, Luciana Mosca, Maria d'Erme
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0072169
Abstract: Amyloid beta peptide (Aβ) causes neurodegeneration by several mechanisms including oxidative stress, which is known to induce DNA damage with the consequent activation of poly (ADP-ribose) polymerase (PARP-1). To elucidate the role of PARP-1 in the neurodegenerative process, SH-SY5Y neuroblastoma cells were treated with Aβ25–35 fragment in the presence or absence of MC2050, a new PARP-1 inhibitor. Aβ25–35 induces an enhancement of PARP activity which is prevented by cell pre-treatment with MC2050. These data were confirmed by measuring PARP-1 activity in CHO cells transfected with amylod precursor protein and in vivo in brains specimens of TgCRND8 transgenic mice overproducing the amyloid peptide. Following Aβ25–35 exposure a significant increase in intracellular ROS was observed. These data were supported by the finding that Aβ25–35 induces DNA damage which in turn activates PARP-1. Challenge with Aβ25–35 is also able to activate NF-kB via PARP-1, as demonstrated by NF-kB impairment upon MC2050 treatment. Moreover, Aβ25–35 via PARP-1 induces a significant increase in the p53 protein level and a parallel decrease in the anti-apoptotic Bcl-2 protein. These overall data support the hypothesis of PARP-1 involvment in cellular responses induced by Aβ and hence a possible rationale for the implication of PARP-1 in neurodegeneration is discussed.
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