The symbiotic binary system RX Puppis: a possible recurrent nova with a Mira companion

We present an analysis of photometric and spectroscopic observations of the symbiotic binary system RX Pup with the aims of developing a reliable binary for the system and identifying mechanisms responsible for its spectacular activity. The binary is composed of a long-perod Mira variable surrounded by a thick dust shell and a hot white dwarf companion. The hot component produces practically all activity observed in the UV, optical and radio range, while variable obscuration of the Mira by circumstellar dust is responsible for long-term changes in the near-IR magnitudes. The observations show RX Pup underwent a nova-like eruption during the last three decades. The hot component contracted in radius at roughly constant luminosity from 1975 to 1986, and was the source of a strong stellar wind which prevented it from accreting material lost in the Mira wind. Around 1988/9 the hot component turned over in the HR diagram and by 1991 its luminosity had faded by a factor of about 30 with respect to the maximum plateau value and the hot wind had practically ceased. By 1995 the nova remnant started to accrete material from the Mira wind, as indicated by a general increase in intensity of the optical continuum and HI emission. The quiescent spectrum resembles the quiescent spectra of symbiotic recurrent novae, and its intensity indicates the hot component must accrete as much as about 1 per cent of the Mira wind, which is more or less the amount predicted by Bondi-Hoyle theory. The earliest observational records from the 1890s suggest that another nova-like eruption of RX Pup occurred around 1894.Comment: 23 pages, 12 figues, MNRAS - accepte

Circadian rhythms of proliferation events in two mouse carcinomas

We studied the index of DNA synthesis (DNAs) of two cellular carcinomas: the hepatocellular ES12a and the mammary TN60 of mice, throughout one circadian cycle. In the results, we observed that both tumors have circadian rhythms (CRs), but the peaks of DNAs vary. Besides, the mean of DNAs along 24 h shows significative differences, the TN60 has higher values than the ES12a. These observed CR in the DNAs index in both carcinomas mean that, at least in partly, the proliferation of cancer cells can be regulated by endocrine factor as it normally occurs in ordinary cells. The big problem we can find for the chronopharmacology is that it is impossible to know in advance the rate of proliferation of each tumor.Fil: Garcia, Marcela. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; ArgentinaFil: Andrini, Laura Beatríz. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; ArgentinaFil: Martinez, Marina. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; ArgentinaFil: Inda, Ana. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Palma, Maria Belen. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Miriuka, Santiago Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Errecalde, Ana Lia. Universidad Nacional de la Plata. Facultad de Ciencias Médicas; Argentin

Using EPP Boxes in a Dark Store: A New Approach to Simplify Food Retail E-Commerce Deliveries

Background: E-commerce has emerged as a good response to the pandemic of COVID-19. However, the costs of providing a service, which includes a driver and a vehicle, in a regular vehicle that can transport goods that need positive cold (0° to 5°C) are very high. Objectives: This paper aims to investigate how a big Portuguese retailer company can reduce its dependence on refrigerated vehicles, simplifying operations and reducing the costs of transporting positive and negative cold food. Methods/Approach: This research was carried out in a food retailer Portuguese company, more precisely in a Dark Store dedicated to the online channel. The study was developed based on the AS-IS/TO-BE process analysis methodology, starting with the analysis of the current situation, giving rise to the so-called AS-IS model. Results: It was possible to reduce costs associated with transporting positive cold goods. As a result, there are 30% fewer costs associated with order transportation. With an additional 10% in space optimization with the gain of space within the galley of each vehicle. Conclusions: The costs of transporting positive and negative cold foods were decreased, and substituting vehicles with room temperature transport reduced the need for refrigerated vehicles

The omnichannel strategy in Portuguese companies: an overview

The consumer's profile and behaviour have undergone drastic changes in recent years, as a result of rapid technological developments associated with the proliferation of the Internet, which have boosted the growth of e-commerce. Retail needed to adopt new strategies to respond to new consumer demands leading to the development of omnichannel. The omnichannel strategy is centred on the consumer and aims to offer him/her a unique, consistent, and quality experience, through any contact point and wherever the consumer wants. However, most Portuguese retailers still opt for a multichannel strategy, where the physical shop and the online shop operate independently from each other. Although there are already some successful cases in Portugal, it can be considered that the use of omnichannel is still at an early stage. More publicity is needed so that retailers are aware of the concept and above all recognise the advantages of this new strategy. Before disclosure it is important to understand why companies work with both online and offline channels and do not opt for an omnichannel strategy. This study aims to analyse Portuguese companies that have not yet adopted an omnichannel strategy, to understand the barriers that make them unwilling to adopt this strategy. To this end, a quantitative research was carried out through the application of surveys to companies in different districts of Portugal to understand their position in relation to omnichannel and the reasons for not moving to this structure. The results obtained made it possible to describe the importance of omnichannel as a commercial and distribution strategy and analyse the reasons why its use by companies in Portugal is still extremely low. The lack of knowledge about the structure and management issues emerged as the biggest barriers.691D-6753-BE59 | Manuel José Serra da Fonsecainfo:eu-repo/semantics/publishedVersio

Incidentaloma de ap?ndice cecal: casu?stica de um hospital geral

ABSTRACT - Background: Appendix neoplasia are rare and most of them are found incidentally during appendectomies for acute appendicitis. Aim: To evaluate the prevalence of appendix neoplasia correlating with patient profile, histological types and their frequencies. Methods: Data collection was performed in a pathology department and a general hospital, with the objective of identifying patients diagnosed with malignant cecal appendix tumors by anatomopathological study of specimen removed by acute appendicitis. Results: The prevalence of malignant primary epithelial neoplasia of the appendix was 1.08%. 50% of the cases were neuroendocrine tumors, 35% were mucinous tumors and 15% were adenocarcinomas. There was no diagnosis of adenoneuroendocrine mixed tumor. The mean age at diagnosis was 41.3 years ? 20.4 (16-81), female/male ratio of 3/1. Conclusions: Appendiceal neoplasms are rare and should be suspected when it is a woman over 40 years of age with symptoms of acute appendicitis. The size, location, extent, margins and presence of mucin are essential data for the treatment of these patients.RESUMO - Racional: Os canceres de ap?ndice s?o raros e a maioria deles ? encontrada incidentalmente durante as apendicectomias por apendicite aguda. Objetivo: Avaliar a preval?ncia de casos de neoplasia de ap?ndice correlacionando com o perfil do paciente, tipos histol?gicos e suas frequ?ncias. M?todos: Realizouse a coleta de dados em um servi?o de patologia e um hospital geral, com o objetivo de identificar os pacientes diagnosticados com tumores malignos de ap?ndice cecal pelo estudo anatomopatol?gico de pe?as retiradas por apendicite aguda. Resultados: A preval?ncia de neoplasia epitelial prim?ria maligna de ap?ndice cecal foi de 1,08%. Na amostra estudada, 50% dos casos eram tumores neuroend?crinos, 35% neoplasias mucinosas e 15% adenocarcinomas. N?o houve diagn?stico de tumor misto adenoneuroend?crino na amostra analisada. A idade m?dia no momento do diagn?stico foi de 41,3 anos ? 20,4 (16-81), raz?o feminino/masculino de 3/1. Conclus?o: As neoplasias de ap?ndice cecal s?o raras e devem ser suspeitadas quando trata-se de uma mulher com mais de 40 anos, com sintomas de apendicite aguda. O tamanho, localiza??o, extens?o, margens e a presen?a de mucina s?o informa??es essenciais para o tratamento destes paciente

The complete organelle genomes of Physochlaina orientalis: Insights into short sequence repeats across seed plant mitochondrial genomes

Short repeats (SR)play an important role in shaping seed plant mitochondrial genomes (mtDNAs). However, their origin, distribution, and relationships across the different plant lineages remain unresolved. We focus on the angiosperm family Solanaceae that shows great variation in repeat content and extend the study to a wide diversity of seed plants. We determined the complete nucleotide sequences of the organellar genomes of the medicinal plant Physochlaina orientalis (Solanaceae), member of the tribe Hyoscyameae. To understand the evolution of the P. orientalis mtDNA we made comparisons with those of five other Solanaceae. P. orientalis mtDNA presents the largest mitogenome (∼685 kb in size)among the Solanaceae and has an unprecedented 8-copy repeat family of ∼8.2 kb in length and a great number of SR arranged in tandem-like structures. We found that the SR in the Solanaceae share a common origin, but these only expanded in members of the tribe Hyoscyameae. We discuss a mechanism that could explain SR formation and expansion in P. orientalis and Hyoscyamus niger. Finally, the great increase in plant mitochondrial data allowed us to systematically extend our repeat analysis to a total of 136 seed plants to characterize and analyze for the first time families of SR among seed plant mtDNAs.Fil: Gandini, Carolina Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; ArgentinaFil: Garcia, Laura Evangelina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; ArgentinaFil: Abbona, Cinthia Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; ArgentinaFil: Sánchez Puerta, María Virginia. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentin

A Partnered Approach to School Change in a Rural Community: Reflections and Recommendations

With so many education policies and practices made at the local level, community-based foundations are in a unique position to support their local school districts in taking a comprehensive, systematic approach to improving the lives of young people. This article describes a research–practice partnership designed to produce school improvement in a rural community in western Virginia and reflects on a three-year collaboration among The Alleghany Foundation, two school districts, and the University of Virginia. The partners identified challenges and strengths within the school districts and the community; gathered and analyzed existing district data and new findings from interviews and surveys of stakeholders; identified problems and promising programs to address them; and developed and communicated a plan for action. Now, the schools, working with the foundation and the community, are implementing that plan. The collaboration provided clear evidence that sustained change will occur only if it aligns with the goals of school leaders and fully engages members of the community, and it sheds light on the unique challenges and strengths present in a small rural community that will influence foundation work. The process also produced five recommendations for foundations that seek a partnered approach to school change

Postfeminism as a critical tool for gender and language study

This article introduces the concept of postfeminism and highlights its value for research in language and gender studies. After discussing theoretical, historical and backlash perspectives, we advance an understanding of postfeminism as a sensibility - a patterned-yet-contradictory phenomenon intimately connected to neoliberalism. We consider elements widely theorised as constituting the postfeminist sensibility, alongside concerns shared by those who take postfeminism as their object of critical inquiry, in addition to an analytic category for cultural critique. The article then illustrates how the postfeminist sensibility may operate empirically, in the context of the doing and undoing of gender equality policies in workplaces. The article responds to calls for the field of language and gender to reinvigorate its political impetus, and to engage with feminist scholarship on postfeminism, particularly as recently developed in media and cultural studies

APP Convida : Agregador de eventos georreferenciados

Orientador: Prof. Dr. Razer Anthom Nizer Rojas MontañoMonografia (graduação) - Universidade Federal do Paraná, Setor de Educação Profissional e Tecnológica, Curso de Graduação em Análise e Desenvolvimento de Sistemas.Inclui referências: p. 99-102Resumo : O Programa Convida foi criado em 2019 a partir de uma demanda identificada pela Prof.ª Dra. Lis Andrea Pereira Soboll, com o objetivo principal de aproximar pessoas e saberes em uma universidade tão grande como a UFPR. O Programa conta com diversas atividades e eventos voltado para o público universitário. Com o crescimento físico e cultural da Universidade Federal Do Paraná, um problema de comunicação foi evidenciado, não existindo um canal unificado, interativo e aberto a comunidade acadêmica, para a divulgação dos eventos aniversitários, muitos desses organizados pelo próprio Programa Convida. O App Convida é um aplicativo que vem com a proposta de solucionar este problema, oferecendo um ambiente virtual onde o pú- blico da universidade pode criar e divulgar seus eventos, acontecendo dentro das dependências da universidade ou não. O Aplicativo ainda conta com o georreferenciamento, mantendo marcado num mapa a localização de todos os eventos presenciais cadastrados, dessa forma a comunidade universitária consegue, em um único lugar, visualizar e confirmar presença em diversos eventos

Violência Sexual Contra Crianças e Adolescentes: A Psicologia e o Estado Penal

O presente artigo discute algumas práticas profissionais no âmbito da psicologia relacionadas às políticas públicas de enfrentamento à violência sexual contra crianças e adolescentes, em um contexto de fortalecimento do Estado penal, de judicialização da vida e de controle por meio do biopoder. A partir de um estudo bibliográfico concentrado em artigos acadêmicos, bem como documentos com referências normativas sobre o tema, relativos à conjuntura pós 1990, buscou-se problematizar certas práticas de controle social que tomaram o sexo como alvo e que, por meio de discursos e práticas que propõem a responsabilização do autor, acabaram por violar direitos e ferir garantias constitucionais de crianças e adolescentes. Têm-se como foco certas técnicas de intervenção da psicologia como a escuta de crianças na rede de proteção que geram a produção de prova e subsídios para a decisão judicial. Considera-se que os saberes psi vêm sendo utilizados para instrumentalizar práticas a serviço da judicialização da vida e que, ao invés de servirem àqueles que tiveram seus direitos violados – no caso as crianças e adolescentes, estão a serviço de uma lógica punitiva e de controle social