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

Describing knowledge encounters in healthcare: a mixed studies systematic review and development of a classification

This review was self-funded

ULTRASTRUCTURE OF THE OVARY OF DERMATOBIA-HOMINIS (DIPTERA, CUTEREBRIDAE) .1. DEVELOPMENT DURING THE 3RD LARVAL INSTAR

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ULTRASTRUCTURE OF THE OVARY OF DERMATOBIA-HOMINIS (DIPTERA, CUTEREBRIDAE) .2. ORIGIN OF THE TUNICA PROPRIA IN OVARIOLES

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Nurses' knowledge and practices regarding pain management in newborns

OBJETIVO Verificar el conocimiento y las prácticas de los enfermeros sobre el manejo del dolor de recién nacidos admitidos en Unidades de Tratamiento Intensivo Neonatal. MÉTODO Estudio descriptivo y transversal. Los datos fueron recolectados con 51 enfermeros, mediante un cuestionario adaptado que tiene el fin de evaluar el conocimiento y las prácticas acerca del manejo del dolor neonatal, en seis hospitales de Curitiba y Región Metropolitana. RESULTADOS Para la mayoría de los enfermeros (86,0%), los neonatos sienten dolor. Un total del 34,7% afirmaron nunca utilizar escalas de evaluación del dolor. El registro del manejo del dolor fue realizado por el 84,3% de los enfermeros. Las medidas farmacológicas realizadas fueron Paracetamol y Fentanilo (47,1%) y Morfina (17,6%); las no farmacológicas adoptadas fueron solución azucarada (68,6%), succión no nutritiva (58,8%) y posicionamiento (56,9%). CONCLUSIÓN Los enfermeros consideraron el dolor neonatal como un evento real; sin embargo, no realizaban evaluación o tratamiento del dolor en el recién nacido de modo sistematizado. Es necesario implantar estrategias de traducción del conocimiento a fin de perfeccionar el manejo del dolor de recién nacidos.OBJETIVO Verificar o conhecimento e as práticasdos enfermeiros sobreo manejo da dor de recém-nascidos admitidos em Unidades de Tratamento Intensivo Neonatal. MÉTODO Estudo descritivo e transversal. Os dados foram coletados com 51 enfermeiros, a partir de um questionário adaptado que visa avaliar o conhecimento e as práticas sobre o manejo da dor neonatal, em seis hospitais de Curitiba e Região Metropolitana. RESULTADOS Para a maioria dos enfermeiros(86,0%), os neonatos sentem dor. Um total de 34,7% afirmaramnunca utilizar escalas de avaliaçãoda dor. O registro do manejo da dor foi realizado por 84,3% dos enfermeiros. As medidas farmacológicas realizadas foram Paracetamol e Fentanil (47,1%) e Morfina (17,6%);as não farmacológicas adotadas foram solução adocicada (68,6%), sucção não nutritiva (58,8%) e posicionamento (56,9%). CONCLUSÃO Os enfermeiros consideraram a dor neonatal como um evento real, porém não realizavam avaliação ou tratamento da dor no recém-nascido de modosistematizado. É necessário implementarestratégias de tradução do conhecimento paraaprimorar o manejo da dor de recém-nascidos.OBJECTIVE To analyze nurses' knowledge and practices regarding pain management of newborns admitted to Neonatal Intensive Care Units. METHOD A descriptive and cross-sectional study. Data were collected from 51 nurses based on an adapted questionnaire aimed at evaluating knowledge and practices regarding the management of neonatal pain in six hospitals in Curitiba and its Metropolitan Region. RESULTS For most nurses (86.0%), neonates feel pain. A total of 34.7% of the nurses reported never using pain assessment scales. Pain management was recorded by 84.3% of the nurses. Administered pharmacological measures were Paracetamol and Fentanyl (47.1%) and Morphine (17.6%); while non-pharmacological measures adopted were sweetened solution (68.6%), non-nutritive sucking (58.8%) and positioning (56.9%). CONCLUSION Nurses considered neonatal pain a real event; however, they do not perform pain assessment or treatment of newborns in a systematized way.It is necessary to implement knowledge translation strategiesin order to improve pain management in newborns