Enhancing the Design and Consistency of an α-particle Irradiator for In Vitro Experiments

https://openworks.mdanderson.org/sumexp23/1033/thumbnail.jp

Ações extensionistas integradas ao ensino universitário: confecção de composteiras para práticas de educação ambiental

O projeto de extensão objetivou atender escolas do município de Passos, Minas Gerais, que necessitavam de auxílio para produção de compostos orgânicos para suas hortas. Dessa forma, integrando conhecimentos de suas disciplinas, graduandos em Agronomia desenvolveram protótipos de composteiras que foram doadas para escolas. Foram ministradas oficinas e palestras aos estudantes de ensino fundamental e médio, para que os mesmos pudessem não só manipular as composteiras doadas, bem como construir novos modelos. Em cada escola foram retiradas amostras do material produzido e realizadas análises químicas. Posteriormente, os alunos do ensino médio receberam as instruções dos discentes de agronomia para realizarem a aplicação nas hortas escolares. Os alunos das escolas perceberam que com a vermicompostagem é possível reduzir o envio de resíduos aos aterros, e favorecer o desenvolvimento de sistemas de economia circulares nas cidades, devolvendo nutrientes para o meio ambiente de forma segura

Puberdade precoce e tardia: revisão de literatura

Introdução: A puberdade é o processo de maturação que ocorre na adolescência, marcado por transformações físicas, cognitivas e psicológicas, que podem se manifestar de forma precoce ou tardia, mediante fatores de risco, sendo necessário o acompanhamento e tratamento adequados. Objetivos: Realizar uma revisão da literatura sobre puberdade precoce e tardia, com enfoque nas etiologias, fatores de risco, diagnósticos e tratamentos. Métodos: Este é um estudo observacional retrospectivo da literatura a partir de artigos publicados no Pubmed. Resultados: Foram analisados 18.947 artigos, sendo 13.241 sobre puberdade precoce e 5.706 sobre puberdade tardia. Com os critérios de exclusão, restaram 22 artigos acerca de puberdade precoce e 12 sobre puberdade tardia. A seleção de títulos excluiu 8 artigos de puberdade precoce e 2 de puberdade tardia. Após leitura e análise, 2 artigos foram excluídos e restaram 15 que compuseram a revisão, a partir da qual foi feita a síntese de dados. Conclusão: O estudo mostrou que ainda é necessário estudar melhor as diversas causas de alterações do tempo da puberdade, assim como buscar novos métodos de diagnóstico e tratamento para melhorar a qualidade de vida desses pacientes

The neurology of COVID-19 revisited: A proposal from the environmental neurology specialty group of the world federation of neurology to implement international neurological registries

A comprehensive review of the neurological disorders reported during the current COVID-19 pandemic demonstrates that infection with SARS-CoV-2 affects the central nervous system (CNS), the peripheral nervous system (PNS) and the muscle. CNS manifestations include: headache and decreased responsiveness considered initial indicators of potential neurological involvement; anosmia, hyposmia, hypogeusia, and dysgeusia are frequent early symptoms of coronavirus infection. Respiratory failure, the lethal manifestation of COVID-19, responsible for 264,679 deaths worldwide, is probably neurogenic in origin and may result from the viral invasion of cranial nerve I, progressing into rhinencephalon and brainstem respiratory centers. Cerebrovascular disease, in particular large-vessel ischemic strokes, and less frequently cerebral venous thrombosis, intracerebral hemorrhage and subarachnoid hemorrhage, usually occur as part of a thrombotic state induced by viral attachment to ACE2 receptors in endothelium causing widespread endotheliitis, coagulopathy, arterial and venous thromboses. Acute hemorrhagic necrotizing encephalopathy is associated to the cytokine storm. A frontal hypoperfusion syndrome has been identified. There are isolated reports of seizures, encephalopathy, meningitis, encephalitis, and myelitis. The neurological diseases affecting the PNS and muscle in COVID-19 are less frequent and include Guillain-Barré syndrome; Miller Fisher syndrome; polyneuritis cranialis; and rare instances of viral myopathy with rhabdomyolysis. The main conclusion of this review is the pressing need to define the neurology of COVID-19, its frequency, manifestations, neuropathology and pathogenesis. On behalf of the World Federation of Neurology we invite national and regional neurological associations to create local databases to report cases with neurological manifestations observed during the on-going pandemic. International neuroepidemiological collaboration may help define the natural history of this worldwide problem

Non-dyadic human–robot interactions and online brand communities

International audienceThis research investigates and conceptualizes non-dyadic human-robot interactions (HRI). Design/methodology/approach: We conducted a netnographic study of the Facebook group called "iRobot-Roomba," an online brand community dedicated to Roomba vacuums. Our data analysis employed an abductive approach, which extended the grounded theory method. Findings: Dyadic portrayals of human-robot interactions can be expanded to consider other actants that are relevant to the consumption experiences of consumer robots. Not only humans but also nonhumans, such as an online brand community, have a meaningful role to play in shaping interactions between humans and robots. Originality: Unlike most previous marketing and consumer research on human-robot interactions, we show that different actants exert agency in different ways, at different times, and with different socio-technical arrangements. Research implications: The present study moves theoretical discussions on HRI from the individual level grounded in a purely psychological approach to a more collective and sociocultural approach. Practical implications: If managers do not have a proper assessment of human-robot interactions that considers different actants and their role in the socio-technical arrangement, they will find it more challenging to design and suggest new consumption experiences

Migrated pharyngeal fish bone causing spondylodiscitis. Case report

Ingestion of foreign bodies is a common problem seen at emergency rooms and frequently involves chicken and fish bones. There are few cases of migrated foreign bodies through the retropharynx causing infectious process in the area but no one, despite the proximity, causing spondylodiscitis. Perhaps such condition is attributed to the integrity of the longus colli fascia covering and protecting the cervical spine. We described the first case of spondylodiscitis due to a foreign body (saw-toothed fish bone) that penetrated the longus colli fascia and carved into vertebral body C3

Price transmission between international and domestic prices in the Brazilian citrus sector

The orange juice chain is a representative sector of the Brazilian agribusiness sector and its performance warrants analysis to identify strategies to enhance its competitiveness. Analysis of asymmetry in food value chain is important because it provides valuable information on market structure and performance. We use an asymmetric threshold error correction model to examine threshold, short- and long-run asymmetries on price transmission from international to domestic prices of oranges in Brazil. We use monthly data on international frozen concentrated orange juice prices and domestic prices of oranges in Brazil for the period from January 1996 to December 2020 in the analysis. We find evidence of threshold and asymmetries in short- and long-run price transmission and asymmetric adjustment towards a long-run relationship between international and domestic orange prices in Brazil. Decreases in international prices that lead to reductions in marketing margins are passed on quickly to domestic prices, but this is not the case for increases in international prices. We discuss implications for the Brazilian citrus industry