The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III

The third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new near-infrared high-resolution spectrograph, and a novel optical interferometer. All of the data from SDSS-III are now made public. In particular, this paper describes Data Release 11 (DR11) including all data acquired through 2013 July, and Data Release 12 (DR12) adding data acquired through 2014 July (including all data included in previous data releases), marking the end of SDSS-III observing. Relative to our previous public release (DR10), DR12 adds one million new spectra of galaxies and quasars from the Baryon Oscillation Spectroscopic Survey (BOSS) over an additional 3000 deg2 of sky, more than triples the number of H-band spectra of stars as part of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE), and includes repeated accurate radial velocity measurements of 5500 stars from the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS). The APOGEE outputs now include the measured abundances of 15 different elements for each star. In total, SDSS-III added 5200 deg2 of ugriz imaging; 155,520 spectra of 138,099 stars as part of the Sloan Exploration of Galactic Understanding and Evolution 2 (SEGUE-2) survey; 2,497,484 BOSS spectra of 1,372,737 galaxies, 294,512 quasars, and 247,216 stars over 9376 deg2; 618,080 APOGEE spectra of 156,593 stars; and 197,040 MARVELS spectra of 5513 stars. Since its first light in 1998, SDSS has imaged over 1/3 of the Celestial sphere in five bands and obtained over five million astronomical spectra. \ua9 2015. The American Astronomical Society

Multi-messenger observations of a binary neutron star merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40+8-8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Mo. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One- Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta

Biologia de Amblyomma rotundatum KOCH, 1844 (Acari: ixodidae) parasitando três gêneros de ofídios no Brasil

Exportado OPUSMade available in DSpace on 2019-08-14T11:00:08Z (GMT). No. of bitstreams: 1 disserta__o_de_mestrado_de_daniel_sobreira_rodrigues.pdf: 10970496 bytes, checksum: 39c0c7a0b70cb8fbfa3e252e249c7e1f (MD5) Previous issue date: 24O carrapato Amblyomma rotundatum parasita animais de sangue frio e reproduz-se obrigatoriamente por partenogênese. Embora seja descrito com freqüência, parasitando répteis e anfíbios em condições naturais e em cativeiro, no Brasil, esse ixodídeo tem sua biologia pouco estudada em ofídios. De acordo com observações de campo, grupos de cascavéis (Crotalus durissus ssp.) demonstraram possuir resistência a infestações por carrapatos quando comparados a outors grupos de ofídios mantidos em recintos próximos e em condições semelhantes. Com o objetivo de estudar o ciclo de vida e comparar alguns parâmetros biol[ógicos de A. rotundatum alimentando-se em três diferentes gêneros de ofídios brasileiros, Crotalus sp., Bothrops sp. E waglerophis sp. Uma colônia foi estabelecida em laboratório e mantida sob condições experimentais de 27°C±1 de temperatura e 75 a 95% de umidade relativa do ar para as fases parasitárias (mantidas sob fotoperíodo de 12 horas) e não parasitárias (mantidas em escotofase). Ofídios da espécie Crotalus durissus ssp. não se mostraram hospedeiros eficientes para a manutenção da população de ectoparasitas quando comparados a espécimes do gênero Bothrops sp. E da espécie W. merremii. A duração total do ciclo biológico variou de aproximadamente dois a cinco meses, sendo também verificado que em condições específicas o número de hospedeiros necessários para que o ciclo biológico de A. rotundatum se complete varia entre dois a três, existindo a possibilidade de um pequeno percentual realizar todas as mudas apenas sobre um hospedeiro. A maioria da população de carrapatos observados realizou ciclo dioxênico. A taxa de mortalidade das serpentes utilizadas foi de 70% e a sintomatologia clínica observada incluiu quadros de estomatite, pneumonia, enterite e abcessos cutâneos.Amblyomma rotundatum is an ixodide tick that infests cold blood animals and reproduces exclusively by parthenogenesis. Although this species has been frequently reported infesting reptiles and amphibians, under natural and captivity conditions in other countries, little is known about its biological aspects in Brazil. According to field observations, some groups of rattle sankes (Crotalus durissus ssp.) have a natural resistance to ticks when compared to other groups pf ophitidians kept under similar conditions. With the objective to study the life cycle of A. rotundatum and to compare some biological parameters of ticks feeding on three different genera of Brazilian ophidians (Crotalus sp., Bothrops sp. and Walglerophis sp), a tick colony was established and maintained under laboratory conditions, at 27ºC +-1 and 75 to 95% relative humidity, keeping the parasitic stages under a photoperiod of the 12 h and the free stages under scotophase. Crotalus durissus sp. did not show to be an efficient host for maintenance of ectoparasites when compared to specimens of the genus Bothrops sp. and the species W. merremii. The total duration of the biologicalcycle ranged from two to five months. Under specific conditions, the number of hosts required for completion of A. rotundatum biological life cycle was two or three. The most of the observed ticks used two host cycle. The mortality rate of the used snakes was 70%. The observed symptomatology included stomatitis, pneumonia, enteritis ans cutaneous absceses

Avaliação de técnicas de banho de aspersão carrapaticida em bovinos de produção de leite

Exportado OPUSMade available in DSpace on 2019-08-12T06:39:36Z (GMT). No. of bitstreams: 1 corre__o_final_daniel___13_01_2014__numerada_.pdf: 3149679 bytes, checksum: 3b54d3e5e8ed7276b98d8a04dd82214f (MD5) Previous issue date: 5Falhas na execução de banhos carrapaticidas são consideradas limitantes para o controle de Rhipicephalus (Boophilus) microplus. Apesar disso, são escassos os estudos acerca do assunto. O objetivo deste trabalho foi avaliar aspectos relativos ao uso de diferentes técnicas de banho por aspersão em bovinos. Foram utilizadas um total de 106 fêmeas com aptidão leiteira em idade reprodutiva e realizadas observações durante 24 meses. A técnica Pulverizador Estacionário Motorizado foi a única a obter avaliações positivas, simultaneamente, nos quesitos: ergonomia física; presença de entupimentos e vazamentos, e qualidade de banho. Para os parâmetros tempo de duração de banho (tempo/animal) e consumo de mistura carrapaticida (L/animal), os valores de média e desvio padrão foram de: 01min12s ± 38s e 4,29 ± 1,48 L para a técnica Usual; 04min8s ± 35s e 3,68 ± 0,33 L para Pulverizador Costal Manual; 06s ± 05s e 3,78 ± 0,60 L, para Câmara Atomizadora; 01min35s ± 13s e 3,37 ± 0,84 L para Pulverizador Estacionário Motorizado. Já os valores calculados para custo operacional efetivo de 01 banho (R$/animal), foram de R$ 0,87; R$1,23; R$ 0,65; R$0,93; respectivamente. Com relação à eficiência de redução de carga parasitária, Pulverizador Estacionário Motorizado apresentou redução de 58$ 0.43, US$0.61, US$ 0.32, US$ 0.46, respectively. The Power Spray treatment killed 58% of the ticks and was more efficient in reducing tick burden (p<0,001) than Usual method and Spray Race, that killed 45% and 48%, respectively. There was no significantly difference between the Backpack Sprayer and the others. Among the techniques evaluated the power spray showed the greatest advantages and therefore should be prioritized

Impacto econômico das doenças parasitárias na pecuária

A visão econômica sobre intervenção na saúde do rebanho deve ser considerada para adotar decisões financeiras em relação ao investimento que será aplicado na atividade pecuária. As doenças causam impactos na produção, seja devido ao custo relacionado ao tratamento e prevenção ou relacionado às perdas produtivas ligadas ao sistema de exploração. Essa revisão de literatura abordará os aspectos da análise financeira dos custos de controle, estratégias de manejo sanitário e sua eficiência econômica para atividade pecuária. Palavras-chave: doenças parasitárias, impacto econômico, pecuária

Machine learning-based cardiac activity non-linear analysis for discriminating COVID-19 patients with different degrees of severity

Objective: This study highlights the potential of an Electrocardiogram (ECG) as a powerful tool for early diagnosis of COVID-19 in critically ill patients with limited access to CT–Scan rooms. Methods: In this investigation, 3 categories of patient status were considered: Low, Moderate, and Severe. For each patient, 2 different body positions have been used to collect 2 ECG signals. Then, from each collected signal, 10 non-linear features (Energy, Approximate Entropy, Logarithmic Entropy, Shannon Entropy, Hurst Exponent, Lyapunov Exponent, Higuchi Fractal Dimension, Katz Fractal Dimension, Correlation Dimension and Detrended Fluctuation Analysis) were extracted every 1s ECG time-series length to serve as entries for 19 Machine learning classifiers within a leave-one-out cross-validation procedure. Four different classification scenarios were tested: Low vs. Moderate, Low vs. Severe, Moderate vs. Severe and one Multi-class comparison (All vs. All). Results: The classification report results were: (1) Low vs. Moderate - 100% of Accuracy and 100% of F1–Score; (2) Low vs. Severe - Accuracy of 91.67% and an F1–Score of 94.92%; (3) Moderate vs. Severe - Accuracy of 94.12% and an F1–Score of 96.43%; and (4) All vs All - 78.57% of Accuracy and 84.75% of F1–Score. Conclusion: The results indicate that the applied methodology could be considered a good tool for distinguishing COVID-19’s different severity stages using ECG signals. Significance: The findings highlight the potential of ECG as a fast and effective tool for COVID-19 examination. In comparison to previous studies using the same database, this study shows a 7.57% improvement in diagnostic accuracy for the All vs All comparison.info:eu-repo/semantics/publishedVersio

Biology of Amblyomma aureolatum (Pallas, 1772) (Acari: Ixodidae) on Some Laboratory Hosts in Brazil

The ixodid Amblyomma aureolatum   is suspected to play a role in the epidemiology of wild life-cycle hemoparasites, which frequently infect dogs in rural and hunting areas in Brazil. Little is known about its bionomics. The objective of the present study was to evaluate some bionomic aspects of A. aureolatum ticks in Brazil. One engorged female, collected from a dog ( Canis familiaris   ) in São Sebastião das Águas Claras, State of Minas Gerais, was used to establish a colony in the laboratory. Subsequently its parasitic stage progeny were fed on domestic dogs and laboratory animals. The free-living stages were incubated at 27ºC ± 2°C and minimum 70% relative humidity in a BOD incubator. The egg incubation period ranged from 31 to 34 days; the parasitic period of larvae ranged from 4 to 6 days and ecdysis to nymphs occurred from day 19 up to day 22. The parasitic period of nymphs ranged from 5 to 8 days and the period of ecdysis to adults from 31 to 33 days. The parasitic period of adults ranged from 11 to 15 days, the pre-oviposition period from 6 to 12 days, and the oviposition period from 9 to 38 days. The total duration of the life cycle ranged from 116 to 168 days