2,087 research outputs found
Draft Genome Sequence of Kocuria sp. Strain UCD-OTCP (Phylum Actinobacteria).
Here, we present the draft genome of Kocuria sp. strain UCD-OTCP, a member of the phylum Actinobacteria, isolated from a restaurant chair cushion. The assembly contains 3,791,485 bp (G+C content of 73%) and is contained in 68 scaffolds
A Search for Optical Emission from Binary Black Hole Merger GW170814 with the Dark Energy Camera
Binary black hole (BBH) mergers found by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo detectors are of immense scientific interest to the astrophysics community, but are considered unlikely to be sources of electromagnetic emission. To test whether they have rapidly fading optical counterparts, we used the Dark Energy Camera to perform an i-band search for the BBH merger GW170814, the first gravitational wave (GW) detected by three interferometers. The 87 deg^2 localization region (at 90% confidence) centered in the Dark Energy Survey (DES) footprint enabled us to image 86% of the probable sky area to a depth of i ~ 23 mag and provide the most comprehensive data set to search for electromagnetic (EM) emission from BBH mergers. To identify candidates, we perform difference imaging with our search images and with templates from pre-existing Dark Energy Survey (DES) images. The analysis strategy and selection requirements were designed to remove supernovae and to identify transients that decline in the first two epochs. We find two candidates, each of which is spatially coincident with a star or a high-redshift galaxy in the DES catalogs, and they are thus unlikely to be associated with GW170814. Our search finds no candidates associated with GW170814, disfavoring rapidly declining optical emission from BBH mergers brighter than i ~ 23 mag (L_(optical) ~ 5 × 10^(41) erg s^(−1)) 1–2 days after coalescence. In terms of GW sky map coverage, this is the most complete search for optical counterparts to BBH mergers to date
Asistencia rural en los siglos XVII y XVIII : los tipos de «conducción» de los profesionales sanitarios en Aragón
El sistema que se utilizaba durante el siglo XVII y XVIII en las zonas rurales de Aragón para garantizar la continua presencia y asistencia de sanitarios era la contratación de éstos por parte de los municipios, lo que normalmente se conocía con el nombre de «conducta médica» o «conducción». En este trabajo se estudia la legislación que sobre este tema existía, los tipos de contratación y procedimiento empleado, así como los sueldos y obligaciones de los sanitarios «conducidos». Para terminar se plantean los problemas que este sistema originó y se enumeran algunas de las fuentes para su conocimiento
Estudio comparativo de las características físicas del semen de ovino en el laboratorio de reproducción asistida de la Diputación de Córdoba
En el presente trabajo se ha realizado un estudio comparativo
de las caracteristicas físicas (volumen y concentración)
de semen procedente de las extracciones realizadas
en el laboratorio de Reproducción Asistida de
Pequeños Rumiantes (código comunitario ES-04-02-0C),
ubicado en el Centro Agropecuario Provincial de la
Diputación de Córdoba, durante los años 2003, 2004 y 2005. Estos trabajos se vienen desarrollando en el seno de los convenios de colaboración suscritos entre la institución cordobesa y las Asociaciones de Criadores de
Ovinos Precoces, Merino y Lacaune, para la mejora genética
de los rebaños de la provincia mediante el empleo de técnicas de inseminación artificial como medida de apoyo al desarrollo de los esquemas de selección de estas
razas. Se realizó un análisis de varianza para la evaluación
de la influencia de los efectos del año de extracción,
la raza, la época de extracción y la interacción entre la
raza y la época de extracción sobre el volumen y la concentración
seminal
Fuzzy rule based profiling approach for enterprise information seeking and retrieval
With the exponential growth of information available on the Internet and various organisational intranets there is a need for profile based information seeking and retrieval (IS&R) systems. These systems should be able to support users with their context-aware information needs. This paper presents a new approach for enterprise IS&R systems using fuzzy logic to develop task, user and document profiles to model user information seeking behaviour. Relevance feedback was captured from real users engaged in IS&R tasks. The feedback was used to develop a linear regression model for predicting document relevancy based on implicit relevance indicators. Fuzzy relevance profiles were created using Term Frequency and Inverse Document Frequency (TF/IDF) analysis for the successful user queries. Fuzzy rule based summarisation was used to integrate the three profiles into a unified index reflecting the semantic weight of the query terms related to the task, user and document. The unified index was used to select the most relevant documents and experts related to the query topic. The overall performance of the system was evaluated based on standard precision and recall metrics which show significant improvements in retrieving relevant documents in response to user queries
Optogenetic activation of accessory olfactory bulb input to the forebrain differentially modulates investigation of opposite versus same-sex urinary chemosignals and stimulates mating in male mice
Surgical or genetic disruption of vomeronasal organ (VNO)-accessory olfactory bulb (AOB) function previously eliminated the ability of male mice to processes pheromones that elicit territorial behavior and aggression. By contrast, neither disruption significantly affected mating behaviors, although VNO lesions reduced males' investigation of nonvolatile female pheromones. We explored the contribution of VNO-AOB pheromonal processing to male courtship using optogenetic activation of AOB projections to the forebrain. Protocadherin-Cre male transgenic mice received bilateral AOB infections with channelrhodopsin2 (ChR2) viral vectors, and an optical fiber was implanted above the AOB. In olfactory choice tests, males preferred estrous female urine (EFU) over water; however, this preference was eliminated when diluted (5%) EFU was substituted for 100% EFU. Optogenetic AOB activation concurrent with nasal contact significantly augmented males' investigation compared to 5% EFU alone. Conversely, concurrent optogenetic AOB activation significantly reduced males' nasal investigation of diluted urine from gonadally intact males (5% IMU) compared to 5% IMU alone. These divergent effects of AOB optogenetic activation were lost when males were prevented from making direct nasal contact. Optogenetic AOB stimulation also failed to augment males' nasal investigation of deionized water or of food odors. Finally, during mating tests, optogenetic AOB stimulation delivered for 30 s when the male was in physical contact with an estrous female significantly facilitated the occurrence of penile intromission. Our results suggest that VNO-AOB signaling differentially modifies males' motivation to seek out female vs male urinary pheromones while augmenting males' sexual arousal leading to intromission and improved reproductive performance
Red blood cell phenotype fidelity following glycerol cryopreservation optimized for research purposes
An intelligent framework for monitoring students Affective Trajectories using adaptive fuzzy systems
Metodología para la identificación y el análisis de procesos de intensificación agrícola mediante la utilización de Sistemas de Información Geográfica e imágenes de satélite. Caso práctico en la cuenca del Guadiamar (proyecto SITCOVER)
Estudio de la Curva de Crecimiento en la Gallina Utrerana
Utilizando el modelo de Gompertz se compararon las curvas de crecimiento de pollos de las tres variedades
de la raza Utrerana: La Utreana Negra, la Perdiz y la
Franciscana. El estudio se realizó alojando los animales
en cautividad en el Centro Agropecuario Provincial de la
Diputación de Córdoba.
Se observó que la variedad Franciscana alcanzó un mayor peso a la madurez con 2870.3 g, seguida de la varidad Negra y, finalmente, de la variedad Perdiz con 2504.7 y 2181.8 g., respectivamente.
En lo que respecta a la velocidad de crecimiento de la
raza, la variedad Franciscana mostró las mayores tasas de
crecimiento hasta el punto de inflexión, en tanto que los menores índices de crecimiento a partir de dicho punto lo obtuvo la variedad Perdiz.
El punto de inflexión se alcanzó a los 62.16, 59.31 y
60.82 días por este orden, para la variedad Franciscana,
Negra y Pediz. Los pesos en ese punto fueron de 1056.03g para la variedad Franciscana, 921.52 g para la Negra y
802.72 g para la Perdiz
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