53 research outputs found
Automatic lane detection in chromatography images
This paper proposes a method for automating the detection of lanes in Thin-Layer Chromatography images. Our approach includes a preprocessing step to detect the image region of interest, followed by background estimation and removal. This image is then projected onto the horizontal direction to integrate the information into a one-dimensional profile. A smoothing filter is applied to this profile and the outcome is the input of the lane detection process, which is performed in three phases. The first one aims at obtaining an initial set of candidate lanes that are further validated or removed in the second phase. The last phase is a refinement step that allows the inclusion of lanes that are not clearly distinguishable in the profile and that were not included in the initial set. The method was evaluated in 66 chromatography images and achieved values of recall, precision and F Ăź -measure of 97.0%, 99.4% and 98.2%, respectively
Efeito de anti-inflamatórios não esteroidais na apoptose de células epidermais lamelares de equinos com laminite
Fauna of euglossina (Hymenoptera: Apidae) from southwestern Amazonia, Acre, Brazil
Male orchid bees were collected between December 2005 and September 2006 in 11 forest areas of different sizes in the region of Rio Branco, Acre, Southwestern Amazonia, Brazil. The bees were attracted by 6 aromatic compounds and collected by insect nets and scent baited traps. A total of 3,675 males of Euglossina in 4 genera and 36 species were collected. Eulaema cingulata (Fabricius) was the most common (24.6%), followed by Eulaema meriana (Olivier) (14.6%), Euglossa amazonica Dressler (10.5%), Eulaema nigrita Lepeletier (10.5%) and Eulaema pseudocingulata (Oliveira) (7.2%). Cineole was the scent that attracted the greatest number of individuals (23.8%) and methyl salicylate the greatest number of species (28) for both methods of sampling. Thirty one bees of 9 species with pollinar orchid attached to their bodies were collected. The accumulative number of species stabilized after the 48th collection. Few species were abundant; the great majority were represented by less than 50 bees. The lack of standardized sample protocols limited very much the conclusions derived from comparisons among the majority of studies on Euglossina assemblages. However, the results presented here suggest that the State of Acre is very rich in those bees compared to other regions.Machos de abelhas Euglossina foram coletados entre dezembro de 2005 e setembro de 2006 em 11 áreas florestais de diferentes tamanhos na regiĂŁo de Rio Branco, Acre, AmazĂ´nia Sul-Ocidental. As abelhas foram atraĂdas por 6 substâncias odorĂferas e coletadas com rede entomolĂłgica e armadilhas. Um total de 3.675 machos de Euglossina pertencentes a 4 gĂŞneros e 36 espĂ©cies foi coletado. Eulaema cingulata (Fabricius) foi a espĂ©cie mais comum (24,6%), seguida por Eulaema meriana (Olivier) (14,6%), Euglossa amazonica Dressler (10,5%), Eulaema nigrita Lepeletier (10,5%) e Eulaema pseudocingulata (Oliveira) (7,2%). Cineol foi a substância que atraiu maior nĂşmero de indivĂduos (23,8%) e metil salicilato o maior nĂşmero de espĂ©cies (28) para ambos os mĂ©todos de coleta. Foram coletados 31 indivĂduos pertencentes a 9 espĂ©cies portando polinários. O nĂşmero acumulado de espĂ©cies coletadas na regiĂŁo estabilizou a partir da 48ÂŞ coleta. Poucas espĂ©cies foram abundantes, a maioria representada por menos que 50 indivĂduos. A falta de um protocolo amostral padronizado tem limitado comparações entre trabalhos realizados em diferentes regiões. Contudo, os resultados aqui apresentados indicam que o Acre apresenta elevada riqueza dessas abelhas
Utilização de carvão ativado biológico para o tratamento de água para consumo humano
Image processing in nucleic acid sequence analysis
SIGLEAvailable from British Library Document Supply Centre- DSC:D179157 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Automatic reading of DNA sequencing gel autoradiographs using a large format digital scanner
Parental skills, assortative mating, and the incidence of autism spectrum disorder
We assess theories that autism spectrum disorder (ASD) is heritable and transmitted through parental skills using data from Denmark. We construct parental skill measures by mapping Danish occupations to the Occupational Information Network (O*NET) survey of U.S. occupations and principal factor analysis. We find that fathers’ skills are linked to ASD in children. A one standard deviation increase in a systems and ordering skills factor correlates with a modest but statistically significant 0.041 percentagepoint (2.4%) increase in ASD incidence. There is a negative and slightly larger relationship with communication skills. ASD also is similarly correlated with Deming’s (2017) routineness and social skills measures, and fathers again play larger roles. We also find evidence consistent with Baron-Cohen (2002) whereby extreme personality traits in parents affect ASD incidence; having two parents with high systems and ordering relative to communication skills leads to a 35% higher diagnosis rate than having parents with “balanced” skills. While all of these estimates are meaningful given the costs of ASD, they only explain a small fraction of variation in ASD diagnoses. Finally, although assortative mating on skills exists, we cannot detect a role for it in recent dramatic increases in ASD
Letter in response to Chitale et al.: determining the utility of the 60-minute cortisol measurement in the short synacthen test
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