In this paper, we show the development of a LabVIEW algorithm able to apply the delayed feedback control on oscillatory electrochemical reactions. The coupling of the control and the experiments was carried out by a real-time apparatus, measuring the faradaic current and, in sequence, applying a calculated circuit voltage as an analog output. The setup was used to control the oscillatory Cu/Sn electrodeposition dynamics, used as a model-system, and the results clearly demonstrate the control accuracy. Overall, the code may be a great tool for the controlled synthesis of nanomaterials in different oscillatory electrodeposition reactions, as it offers the ability to control the composition and structure of the deposit by fine tuning the dynamic properties.

Resumo Objetivos: apresentar as principais evidências, recomendações e desafios à saúde materno-infantil no contexto da pandemia de COVID-19. Métodos: revisão narrativa de documentos nacionais e internacionais e reflexões sobre a temática. Resultados: a coexistência da gestação/puerpério e infecção por COVID-19 impõe muitos desafios. A conduta adotada deve ser de caráter individual, abrangendo todos os aspectos de saúde do binômio mãe-filho, estimando os riscos e benefícios de cada decisão. Até o momento, reconhece-se que o parto natural deve ser incentivado e a amamentação mantida, desde que assegurados os cuidados higienicossanitários. O parto cirúrgico e o isolamento com separação do contato mãe-filho, sem amamentação, serão elegíveis para casos em que o quadro clínico da mãe ou da criança seja crítico. A criança deve ser incluída em todas as etapas do cuidado em saúde, pois esse grupo comumente assintomático desempenha papel importante na transmissibilidade familiar da doença. Deve-se propiciar a imunização de rotina, oportunizar a assistência clínica, quando necessária, e auxiliar as famílias em prol do bem-estar. Conclusão: o atual momento ainda não nos permite mensurar as consequências dessa nova pandemia no âmbito da saúde materno-infantil, demandando atenção à sua evolução e novas evidências acerca das implicações no cuidado ao binômio mãe-filho.

Abstract Objectives: to present the main evidence, recommendations and challenges for maternal and child health in the context of COVID-19 pandemic. Methods: narrative review of national and international documents and reflections on the theme. Results: the coexistence ofpregnancy/puerperium and COVID-19 infection establishes many challenges. It is extremely important that the conduct should be individually adopted, covering all aspects of health in the mother-child binomial, estimating risks and benefits of each decision. Until now, it is recognized that natural childbirth should be encouraged and breastfeeding maintained, if adequate hygienic-sanitary care is ensured. Cesarean delivery and the isolation and separation of the mother-child contact without breastfeeding, will only be eligible when the clinical status of the mother or child is critical. The child must be included in all stages of health care, as this commonly asymptomatic group plays an important role in the family's transmissibility of the disease. Routine immunization should be provided, as well as clinical assistance when necessary, and families must be assisted in favor of their well-being. Conclusion: at the moment, it is not possible to measure the consequences of this new pandemic on maternal and child health, demanding attention to its evolution and new evidences about the implications in mother and child care.

Facial palsy, parotid diseases and others are a relatively common clinical condition with a variety of causes. Irrespective of its etiology, facial palsy always represents a very serious problem for the patient. Parotid gland diseases also are very common occurrence. In this particular case, the knowledge of surgical anatomy of the facial nerve and its correlations with the parotid gland is very important for an adequate preservation in the cases of surgery of benign and malignant diseases of the parotid gland. Although the surgical anatomy of the facial nerve has been well documented, the concept of surgical treatment for parotid tumors, facial palsy (neurorraphy techniques) and submandibular surgical approach are rarely challenged now.

La parálisis facial, enfermedades de la parótida y otras patologías son una condición clínica relativamente común con una variedad de causas. Independientemente de su etiología, la parálisis facial siempre representa un problema muy serio para el paciente. Las enfermedades de la glándula parótida son también de una ocurrencia común. En este caso particular, el conocimiento de la anatomía quirúrgica del nervio facial y su correlación con la glándula parótida es de mucha importancia para una adecuada preservación de la misma, en casos de cirugía como tratamiento de enfermedades benignas o malignas. Aunque la anatomía quirúrgica del nervio facial es bien documentada, el concepto de tratamiento quirúrgico para los tumores parotídeos, parálisis facial (técnicas de neurorrafia) y acercamiento quirúrgico submandibular son raramente impugnados hoy en día.