A Search for Technosignatures Around 31 Sun-like Stars with the Green Bank Telescope at 1.15-1.73 GHz

We conducted a search for technosignatures in April of 2018 and 2019 with the L-band receiver (1.15-1.73 GHz) of the 100 m diameter Green Bank Telescope. These observations focused on regions surrounding 31 Sun-like stars near the plane of the Galaxy. We present the results of our search for narrowband signals in this data set as well as improvements to our data processing pipeline. Specifically, we applied an improved candidate signal detection procedure that relies on the topographic prominence of the signal power, which nearly doubles the signal detection count of some previously analyzed data sets. We also improved the direction-of-origin filters that remove most radio frequency interference (RFI) to ensure that they uniquely link signals observed in separate scans. We performed a preliminary signal injection and recovery analysis to test the performance of our pipeline. We found that our pipeline recovers 93% of the injected signals over the usable frequency range of the receiver and 98% if we exclude regions with dense RFI. In this analysis, 99.73% of the recovered signals were correctly classified as technosignature candidates. Our improved data processing pipeline classified over 99.84% of the ~26 million signals detected in our data as RFI. Of the remaining candidates, 4539 were detected outside of known RFI frequency regions. The remaining candidates were visually inspected and verified to be of anthropogenic nature. Our search compares favorably to other recent searches in terms of end-to-end sensitivity, frequency drift rate coverage, and signal detection count per unit bandwidth per unit integration time.Comment: 20 pages, 8 figures, in press at the Astronomical Journal (submitted on Sept. 9, 2020; reviews received Nov. 6; re-submitted Nov. 6; accepted Nov. 17

O nitroprussiato de sódio causa óbito fetal? Uma revisão sistemática

OBJECTIVE: To determine whether sodium nitroprusside causes fetal death in pregnancies complicated with hypertension. DATA SOURCES: Medical Literature Analysis and Retrieval System Online (MEDLINE; 1996 to 2003), Excerpta Medica (EMBASE; 1970 to 2003), Web of Science/Institute for Scientific Information (ISI; 1945 to 2003), Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS; 1982 to 2003) and the Cochrane Library. REVIEW METHODS: The medical subject headings used were nitroprusside and pregnancy, hypertension or eclampsia or preeclampsia and nitroprusside and pregnancy and hypertensive emergencies. The search was limited to humans and female gender, in all fields, publication types, languages and subsets. Articles were also identified by reviewing the references of articles and textbooks on hypertension and pregnancy. RESULTS: The search located nine studies. The sum of all the publications yielded a total of 22 patients and 24 exposed fetuses (two pairs of twins). There were no randomized clinical trials and no prospective cohorts. All of the studies were observational in nature. CONCLUSIONS: At present, there is insufficient evidence for definitive conclusions about any direct association between sodium nitroprusside use and fetal demise.OBJETIVOS: Resolver a questão: o nitroprussiato de sódio causa morte fetal em gestações complicadas por hipertensão? FONTES DE INFORMAÇÃO: Medical Literature Analysis and Retrival System Online, MEDLINE (1996 a 2003), Excerpta Medica, EMBASE (1970 to 2003), Web of Science - Institute for Scientific Information, ISI (1945 a 2003), Literatura Latino-Americana e do Caribe em Ciências da Saúde, LILACS (1982 a 2003) e a Cochrane Library. MÉTODO DE REVISÃO: Os descritores usados foram nitroprussiato e gravidez, hipertensão ou eclâmpsia ou pré-eclâmpsia, nitroprussiato e gravidez e emergências hipertensivas limitada a humanos e mulheres, em todos os campos, tipos de publicação, línguas e subgrupos. Foram também identificados artigos através das referências das publicações e de livros sobre hipertensão e gravidez. RESULTADOS: A revisão identificou nove publicações. A soma de todas elas descreveu um total de 22 mulheres e 24 fetos (duas gestações gemelares) expostos ao nitroprussiato. Não foram localizados ensaios clínicos randomizados ou coortes prospectivas. Todos os estudos eram do tipo descritivo. CONCLUSÕES: No momento, não existem evidências suficientes para se chegar à conclusão definitiva de que exista uma associação direta entre o uso de nitroprussiato de sódio e morte fetal.Universidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina Obstetrics DepartmentUNIFESP, EPM, Obstetrics DepartmentSciEL

Nível de atividade física e qualidade de vida de profissionais bancários

The purpose of this study was to describe the level of physical activity and quality of life of bank workers. This is a quantitative and cross-sectional descriptive study of 36 bank workers of the town of Jequié. To collect the level of physical activity, it was used the International Physical Activity Questionnaire (IPAQ) that evaluates the practice this activity during 1 week. To evaluate the quality of life was used the WHOQOL-bref that considers 4 areas for the assessment: physical, psychological, social relationships and environment. The data were tabulated and analyzed using descriptive and simple statistics in the Statistical Package for the Social Sciences(SPSS) version 21.0. Among the results, it was found that 66,7% (n=24) of bank workers were classified as physicallyinactive. Regarding the evaluation of the Quality of Life, it was observed that the bank workers showed a better perception of Quality of Life in the physicaldomain (82,1) and worst perception in environment domain (59,3).It is concluded that based on this study it was possible the understanding about de physical activity level in which there was a predominance of physically inactive workers and it can influence their quality of life in the physical and environment domains.  Este estudio tuvo como objetivo describir el nivel de actividad física y calidad de vida de trabajadores bancarios. Es un estudio cuantitativo, descriptivo y transversal realizado con 36 bancarios de la ciudad de Jequié, Bahía, Brasil. Para recolectar el nivel de actividad física se adoptó el Cuestionario Internacional de Actividad Física (IPAQ) que evalúa la práctica de esa actividad en el período de una semana. Para evaluar la calidad de vida se utilizó el WHOQOL-bref que considera 4 dominios para evaluación: físico, psicológico, relaciones sociales y medio ambiente. Los datos fueron tabulados y analizados mediante estadística descriptiva simples en el software Software Statistical Package for the Social Sciences (SPSS) versión 21.0. Entre los resultados se obtuvo que 66,7% (n=24) de los bancarios eran insuficientemente activos. En lo que se refiere a la evaluación de los dominios de la calidad de vida, se observó que los bancarios presentaron mejor percepción de calidad de vida en el dominio físico (82,1) y peor percepción en el dominio medio ambiente (59,3). Se concluye que a partir de este estudio, fue posible la comprensión sobre el nivel de actividad física de los bancarios, en que hubo el predominio de trabajadores insuficientemente activos, sin que tal factor pueda estar influenciando en su calidad de vida.  Este estudo teve como objetivo descrever o nível de atividade física e a qualidade de vida de bancários. Trata-se de um estudo quantitativo e descritivo de corte transversal realizado com 36 bancários da cidade de Jequié, Bahia, Brasil. Para coletar o nível de atividade física adotou-se o Questionário Internacional de Atividade Física (IPAQ) que avalia a prática dessa atividade no período de 1 semana. Para avaliar a Qualidade de Vida utilizou-se o WHOQOL-bref que considera quatro domínios para avaliação: físico, psicológico, relações sociais e meio ambiente. Os dados foram tabulados e analisados por meio de estatística descritiva simples no software Statistical Package for the Social Sciences (SPSS) versão 21.0. Entre os resultados, constatou-se que 66,7% (n=24) dos bancários eram insuficientemente ativos. Quanto à avaliação dos domínios da Qualidade de Vida, observou-se que os bancários apresentaram melhor percepção de Qualidade de Vida no domínio físico (82,1) e pior percepção no domínio meio ambiente (59,3). Conclui-se que, a partir desse estudo, foi possível à compreensão sobre o nível de atividade física, em que houve predominância de trabalhadores insuficientemente ativos, sendo que este fator pode estar influenciando na sua qualidade de vida no domínio físico e meio ambiente. &nbsp

Nível de atividade física e qualidade de vida de profissionais bancários

The purpose of this study was to describe the level of physical activity and quality of life of bank workers. This is a quantitative and cross-sectional descriptive study of 36 bank workers of the town of Jequié. To collect the level of physical activity, it was used the International Physical Activity Questionnaire (IPAQ) that evaluates the practice this activity during 1 week. To evaluate the quality of life was used the WHOQOL-bref that considers 4 areas for the assessment: physical, psychological, social relationships and environment. The data were tabulated and analyzed using descriptive and simple statistics in the Statistical Package for the Social Sciences(SPSS) version 21.0. Among the results, it was found that 66,7% (n=24) of bank workers were classified as physicallyinactive. Regarding the evaluation of the Quality of Life, it was observed that the bank workers showed a better perception of Quality of Life in the physicaldomain (82,1) and worst perception in environment domain (59,3).It is concluded that based on this study it was possible the understanding about de physical activity level in which there was a predominance of physically inactive workers and it can influence their quality of life in the physical and environment domains.  Este estudo teve como objetivo descrever o nível de atividade física e a qualidade de vida de bancários. Trata-se de um estudo quantitativo e descritivo de corte transversal realizado com 36 bancários da cidade de Jequié, Bahia, Brasil. Para coletar o nível de atividade física adotou-se o Questionário Internacional de Atividade Física (IPAQ) que avalia a prática dessa atividade no período de 1 semana. Para avaliar a Qualidade de Vida utilizou-se o WHOQOL-bref que considera quatro domínios para avaliação: físico, psicológico, relações sociais e meio ambiente. Os dados foram tabulados e analisados por meio de estatística descritiva simples no software Statistical Package for the Social Sciences (SPSS) versão 21.0. Entre os resultados, constatou-se que 66,7% (n=24) dos bancários eram insuficientemente ativos. Quanto à avaliação dos domínios da Qualidade de Vida, observou-se que os bancários apresentaram melhor percepção de Qualidade de Vida no domínio físico (82,1) e pior percepção no domínio meio ambiente (59,3). Conclui-se que, a partir desse estudo, foi possível à compreensão sobre o nível de atividade física, em que houve predominância de trabalhadores insuficientemente ativos, sendo que este fator pode estar influenciando na sua qualidade de vida no domínio físico e meio ambiente.  Este estudio tuvo como objetivo describir el nivel de actividad física y calidad de vida de trabajadores bancarios. Es un estudio cuantitativo, descriptivo y transversal realizado con 36 bancarios de la ciudad de Jequié, Bahía, Brasil. Para recolectar el nivel de actividad física se adoptó el Cuestionario Internacional de Actividad Física (IPAQ) que evalúa la práctica de esa actividad en el período de una semana. Para evaluar la calidad de vida se utilizó el WHOQOL-bref que considera 4 dominios para evaluación: físico, psicológico, relaciones sociales y medio ambiente. Los datos fueron tabulados y analizados mediante estadística descriptiva simples en el software Software Statistical Package for the Social Sciences (SPSS) versión 21.0. Entre los resultados se obtuvo que 66,7% (n=24) de los bancarios eran insuficientemente activos. En lo que se refiere a la evaluación de los dominios de la calidad de vida, se observó que los bancarios presentaron mejor percepción de calidad de vida en el dominio físico (82,1) y peor percepción en el dominio medio ambiente (59,3). Se concluye que a partir de este estudio, fue posible la comprensión sobre el nivel de actividad física de los bancarios, en que hubo el predominio de trabajadores insuficientemente activos, sin que tal factor pueda estar influenciando en su calidad de vida.

A new approch for measuring oceanic vertical velocities

International audienc

Study of fine-scale dynamics and their coupling with biogeochemistry - FUMSECK cruise

International audienceFUMSECK (Facilities for Updating the Mediterranean Submesoscale - Ecosystem Coupling Knowledge) is a one-week cruise, which took place in spring 2019, in the gulf of Genoa (NW Mediterranean Sea), onboard the R/V Téthys II. It was conducted in preparation of the BioSWOT-Med cruise in the SW Mediterranean Sea in 2022, planned as part of the ``Adopt a Cross Over'' initiative organising simultaneous oceanographic cruises around the world during the SWOT fast sampling phase. During FUMSECK we tested various technological innovations for the study of fine-scale dynamics and their coupling with biogeochemistry.By their interactions, the fine scales could induce some ageostrophic and tridimensional dynamics, which are a critical point for the understanding of the vertical exchanges and their effect on biogeochemistry. Therefore, the fine scales play a key role in the oceans global balance and, despite their low intensity, clearly impact processes such as nutriment vertical transfer and carbon export. However, their ephemeral nature complicates their in situ measurements, which are nevertheless essential for their understanding and for the confirmation of the models' prediction and the satellite observations. Furthermore, measuring vertical velocities in situ represents a real challenge since they are several orders of magnitude below the horizontal ones.The FUMSECK cruise benefited from the automatic Lagrangian SPASSO treatment of the satellite data with an onshore team providing a daily bulletin of analysis and guidance on the fine-scale structures in the studied area. The distribution of phytoplankton functional groups at a small spatio-temporal scale was measured by automated flow cytometry with imaging. This technology allows to address the distribution of phytoplankton at fine scales within its hydrodynamic context. Several methods of measuring vertical velocities have been deployed, using different ADCP at fixed depth and in profile, FF-ADCP (Free Fall ADCP), the VVP (Vertical Velocities Profiler) prototype developed at MIO, and a SeaExplorer glider. These methods have shown promising results for in situ measurement of vertical velocities. Overall results show an abrupt change of population associated with a fine-scale structure appearance in relation with a storm event.In addition, in order to study the physical part of the biological carbon pump, we experienced the release, following, pumping and detection by cytometry of a sample of biodegradable micro-particles that mimic the phytoplankton, and established a proof-of-concept for this method. Finally, we studied the MVP (Moving Vessel Profiler) instruments behaviour and reduced significantly a rotative effect.We will describe the instrumental and analysis methodology deployed during FUMSECK in the study area of the Ligurian Sea, including the Northern Current, and present the results on the fine-scale dynamics and their impact on biology

Phytoplankton reaction to an intense storm in the north-western Mediterranean Sea

International audienceThe study of extreme weather events and their impact on ocean physics and biogeochemistry is challenging due to the difficulty involved with collecting in situ data. However, recent research has pointed out the major influence of such physical forcing events on microbiological organisms. Moreover, the occurrence of such intense events may increase in the future in the context of global change. In May 2019, an intense storm occurred in the Ligurian Sea (north-western Mediterranean Sea) and was captured during the FUMSECK (Facilities for Updating the Mediterranean Submesoscale - Ecosystem Coupling Knowledge) cruise. In situ multi-platform (vessel-mounted acoustic Doppler current profiler, thermosalinometer, fluorometer, flow cytometer, a moving vessel profiler equipped with a multi-sensor towed vehicle, and a glider) measurements along with satellite data and a 3D atmospheric model were used to characterise the fine-scale dynamics occurring in the impacted oceanic zone. The most affected area was marked by a lower water temperature (1 °C colder), a factor of 2 increase in surface chlorophyll a, and a factor of 7 increase in the nitrate concentration, exhibiting strong gradients with respect to the surrounding waters. Our results show that this storm led to a deepening of the mixed-layer depth from 15 to 50 m and a dilution of the deep chlorophyll maximum. As a result, the surface biomass of most phytoplankton groups identified by automated flow cytometry increased by up to a factor of 2. Conversely, the carbon / chlorophyll ratio of most phytoplankton groups decreased by a factor of 2, evidencing significant changes in the phytoplankton cell composition. These results suggest that the role of storms on the biogeochemistry and ecology of the Mediterranean Sea may be underestimated and highlight the need for high-resolution measurements during these events coupling physics and biology