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| Registros recuperados: 101 | |
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| GUIMARÃES,ZULMIRA A.S.; DAMATTA,RENATO A.; GUIMARÃES,RENAN S.; FILGUEIRA,MARCELLO. |
| ABSTRACT With the aim of introducing permanent prostheses with main properties equivalent to cortical human bone, Ti-diamond composites were processed through powder metallurgy. Grade 1 titanium and mixtures of Ti powder with 2%, 5% and 10 wt% diamond were compacted at 100MPa, and then sintered at 1250°C/2hr/10-6mbar. Sintered samples were studied in the point of view of their microstructures, structures, yield strength and elastic modulus. The results showed that the best addition of diamonds was 2 wt%, which led to a uniform porosity, yield strength of 370MPa and elastic modulus of 13.9 GPa. Samples of Ti and Ti-2% diamond were subjected to in vitro cytotoxicity test, using cultures of VERO cells, and it resulted in a biocompatible and nontoxic composite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomaterials; Titanium; Diamond; Sintering; Characterization; Biocompatibility.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603111 |
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| BAKOUCH,HASSAN S. |
| Abstract A new discrete distribution is introduced. The distribution involves the negative binomial and size biased negative binomial distributions as sub-models among others and it is a weighted version of the two parameter discrete Lindley distribution. The distribution has various interesting properties, such as bathtub shape hazard function along with increasing/decreasing hazard rate, positive skewness, symmetric behavior, and over- and under-dispersion. Moreover, it is self decomposable and infinitely divisible, which makes the proposed distribution well suited for count data modeling. Other properties are investigated, including probability generating function, ordinary moments, factorial moments, negative moments and characterization. Estimation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characterization; Discrete distributions; Estimation; Vuong test statistic; Mixture distributions; Thunderstorms data. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602617 |
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| Carvalho, Daniela Moreira de; Souza, Jalmir Pinheiro De. |
| A caprino-ovinocultura na região Nordeste tem grande importância tanto econômica quanto social, devido ao fato dos animais terem uma boa adaptação ao clima e a alimentação, muitas vezes escassa, disponível na região. A compreensão das cadeias produtivas locais permite a proposição de melhorias no setor a fim de torná-lo mais eficiente. Na caprino-ovinocultura a eficiência ocorre através da oferta aos consumidores de carnes de melhor qualidade, animais jovens, constância de oferta, segurança alimentar e preços competitivos. O resultado da eficiência do sistema produtivo seria de uma maior rentabilidade, uma inserção em novos mercados, ou seja, numa maior competitividade de todo setor. Nesse sentido objetivou-se realizar uma análise descritiva da cadeia... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Caprino-ovinocultura; Cadeia produtiva; Coordenação; Caracterização; Garanhuns; Sheep & goat farming; Productive chain; Coordination; Characterization; Garanhuns; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/109705 |
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| Pérez,Rodrigo; Navarro,Florentino; Sánchez,María Ángeles; Ortíz,Jesús María; Morales,Remedios. |
| The rapid identification of the hybrids between sweet cherry (Prunus avium L.) and sour cherry (Prunus cerasus L.) is not easy. In order to resolve this problem, 18 Spanish sweet, sour and duke cherry cultivars were surveyed and characterized using 43 agromorphological descriptors evaluated in flowers, leaves, dormant 1-yr-old shoots, fruits, and trees during 2005 and 2006. Based on quantitative parameters, ANOVA and stepwise discriminant analysis (SDA) were carried out. For qualitative descriptors, statistical comparisons were done by means of the chi-square (χ2) test. As result of the study, two quantitative (titratable acidity and number of lenticels) and six qualitative descriptors (shape of the central and lateral lobes in the internal bracts... |
| Tipo: Journal article |
Palavras-chave: Rosaceae; Characterization; Quantitative parameters; Qualitative parameters; SDA analysis. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100004 |
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| Rosa,Thuanny Lins Monteiro; Araujo,Caroline Palacio de; Alexandre,Rodrigo Sobreira; Schmildt,Edilson Romais; Lopes,José Carlos. |
| Abstract: The objective of this work was to evaluate the biometry of fruit and seed, and the diversity of paradise nut (Lecythis pisonis) genotypes. Fruit of 12 paradise nut genotypes were collected from plants in the northern region of the state of Espírito Santo and in the eastern region of the state of Minas Gerais, Brazil. Data were subjected to the analysis of variance, and means of the different genotypes were compared by Scott-Knott’s mean clustering test. The phenotypic diversity was analyzed using Mahalanobis’ generalized distance, and clustering, by Tocher’s optimization method and the graphical dispersion of canonical variables. The relative contribution of the characters to diversity was assessed by Singh’s method. The paradise nut genotypes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lecythis pisonis; Characterization; Divergence; Genotypes; Sapucaia nut. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102502 |
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| Dobrev,Georgi Todorov; Zhekova,Boriana Yordanova. |
| An extracellular endoglucanase was isolated from the culture liquid of xylanase producing strain Aspergillus niger B03. The enzyme was purified to a homogenous form, using consecutive ultrafiltration, anion exchange chromatography, and gel filtration. Endoglucanase was a monomer protein with a molecular weight of 26,900 Da determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and 28,800 Da determined by gel filtration. The optimal pH and temperature values for the enzyme action were 3.5 and 65ºC respectively. Endoglucanase was stable at 40ºC, pH 3.0 for 210 min. The substrate specificity of the enzyme was determined with carboxymethyl cellulose, filter paper, and different glycosides. Endoglucanase displayed maximum activity in the case... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endoglucanase; Purification; Characterization; Aspergillus niger; Endoxylanase. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100008 |
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| Andrade, Renata Aparecida de; UNESP - Jaboticabal/SP; Lemos, Eliana Gertrudes de Macedo; UNESP - Jaboticabal/SP; Martins, Antonio Baldo Geraldo; UNESP - Jaboticabal/SP; Paula, Rinaldo César de; UNESP - Jaboticabal/SP. |
| Em certas espécies vegetais, a distinção entre variedades pode ser realizada com base em aspectos morfológicos das plantas, o que permite a identificação mesmo quando não apresentam flores e/ou frutos. Diante disso, realizou-se o presente trabalho cujo objetivo foi a caracterização morfológica e o agrupamento de plantas de rambutan. Foram avaliados: altura da planta (cm), diâmetro e geometria da copa (entre linhas e entre plantas, em cm), diâmetro do tronco (cm) e disposição dos ramos no tronco, tamanho de folhas e folíolos (comprimento e largura, em cm), número de folíolos, comprimento da ráquis (cm), comprimento do pecíolo (cm), área foliar (cm2), vigor das plantas, sensibilidade ao frio, formato dos folíolos, pilosidade, coloração dos folíolos (faces... |
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Palavras-chave: 5.01.03.04-0 Produção de Mudas Nephelium lappaceum; Morfologia; Caracterização fitotecnia Nephelium lappaceum; Morphology; Characterization. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/890 |
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| List Montesinos, Hildegard Berenice. |
| El haba es un cultivo de alto valor nutrimental, es la tercer leguminosa consumida a nivel nacional, después del frijol y la lenteja, cultivándose principalmente en los estados de Puebla, Tlaxcala, Veracruz, Estado de México y Michoacán. Sin embargo, el empleo de variedades criollas con baja producción y susceptibles a enfermedades ha propiciado la disminución de la superficie destinada a su cultivo. El objetivo de la investigación fue la caracterización agronómica, calidad culinaria, nutrimental y molecular de tres colectas de V. faba L. (tipo minor y tipo equina) provenientes de localidades con diferente altitud ubicadas en Puebla y Oaxaca, con el fin de identificar líneas sobresalientes para iniciar un programa de mejoramiento genético. En la parte... |
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Palavras-chave: Vicia faba tipo minor; Equina; Caracterización; Formación de líneas; Vicia faba minor; Characterization; Selection lines; Genética; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2330 |
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| Hernández Flores, Martín. |
| La investigación ha privilegiado la identificación y caracterización de un bien histórico de gran importancia patrimonial y valor presente, que se manifiesta como factor fundamental a través de un conjunto de poblaciones de maíces nativos -conocidos localmente como criollos-, al interior de una amplia diversidad y multifuncionalidad de sistemas productivos, en la región de la Costa Chica de Guerrero. La tendencia de la modernización de la agricultura durante los últimos años, demuestra que en la región se ha excluido sistemáticamente el valor presente de los recursos locales, los cuales indudablemente forman parte de las lógicas de funcionamiento de los sistemas de producción campesinos e indígenas. En particular, ha sido y es notorio el desinterés... |
| Tipo: Tesis |
Palavras-chave: Tipos de maíz criollo; Sistemas de cultivo; Caracterización; Maestría; Desarrollo Rural; Types of creole maize; Systems of culture; Characterization. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1557 |
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| Registros recuperados: 101 | |
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