ABSTRACT The current teaching case describes a story about how a manager of a car dealer company finds in job crafting practices the mechanisms to face the challenges imposed by a severe socio-economic crisis such as the one created by COVID-19. With the pandemic, the manager gains autonomy on his job, which allows him to implement changes of different dimensions: structural changes (in tasks and processes), relational changes (concerning work relationships), and cognitive changes (regarding perception of one’s work/role). Moreover, the case addresses generation Y as an antecedent of job crafting, as well as the consequences of such practices. At individual level, the case allows students to discuss engagement with the job and the positive impact to in-role performance. At the organizational level, the case discusses the bottom-up approach as an alternative to traditional job design approach. As so, the case was originally developed for disciplines such as Organizational Behavior or Human Resources as part of Business Management graduate courses.
RESUMO O presente caso de ensino conta a história de como o gerente de uma agência de carros encontra na prática de job crafting o caminho para enfrentar os desafios impostos por uma grave crise socioeconômica, como a provocada pela COVID-19. Com a pandemia, o gerente ganha autonomia na sua atuação profissional, a qual o permite implementar mudanças de natureza estrutural - nas atividades e processos da empresa, social - nos relacionamentos, e cognitiva - em relação à percepção sobre o trabalho. O caso traz as características da geração Y como antecedente do job crafting, além de abordar os desdobramentos decorrentes de tais práticas. No nível individual, o caso permite explorar os elementos do engajamento profissional e sua conexão com o atendimento das necessidades individuais, bem como a melhoria no desempenho profissional. No nível organizacional, o caso discute a abordagem bottom-up como alternativa para o desenho da função, apresentando os impactos de tal abordagem no desempenho organizacional. Assim, o caso foi originalmente pensado para disciplinas de Comportamento Organizacional ou Gestão de Pessoas em cursos de pós-graduação em Administração e Psicologia.
ABSTRACT Studies involving coastal sediment resuspension have shown that trace metals could be released to the water column due to changes in physical-chemical conditions. Therefore, if environmental agencies adopt screening protocols with insufficient evaluations of contaminant mobilization risks for a given area, the prediction of environmental impacts caused by dredging may be limited. This work evaluates the influence of spatial variation on the geochemical mobility of trace metals (Cd, Cu, Ni, Pb, Zn) after artificial sediment resuspension, using as study case the Iguaçu River estuary (Guanabara Bay, Brazil). The Iguaçu River drains the industrial complex of the metropolitan area of Rio de Janeiro State, besides the presence of agriculture and the input of untreated domestic wastes. Surface estuarine sediments were submitted to resuspension experiments in an open system, during 1h and 24h of agitation on local water. A clear tendency of metals’ solubilization was observed after resuspension, especially considering the dissolved concentrations of Cu (average: 8.0 µg L-1) and Zn (average: 0.9 mg L-1), especially for the samples from the transects 2 and 3. However, evaluations of water quality changes due to sediment resuspension are not requested by the legislation regulating the dredging activities. In the sediments, the results suggested a higher geochemical mobility of Cu, indicated by the massive increase on the bioavailable fraction after resuspension, mainly on the transect number 3, on the river’s mouth. The effects of resuspension were distinct between samples, suggesting that even in a small scale, important differences on metals’ mobility are found. Thus, the combined assessment of changes in metal concentrations in water and in the metal partitioning linked to the solid-phase was demonstrated to be a promising tool for predicting the environmental risks of dredging due to changes in the bioavailability of metals.
During an ordinary dissection, a cadaver showed a bilateral anomalous origin of the deep brachial artery, where this vessel appeared like a branching of the subscapular artery with common trunk, which included the posterior circumflex humeral artery. The course and distribution of the deep brachial artery in the back compartment were relatively consistent with previous reports. Arterial variations can be damaged through iatrogenic means if not properly documented. The knowledge of this case is very important in clinical medicine and in surgeries in this compartment to prevent any injury.
Durante dissecação em prática usual, um cadáver apresentou origem anômala da artéria braquial profunda, na qual este vaso apareceu como um ramo da artéria subescapular com um tronco comum, que incluiu a artéria circunflexa posterior do úmero. O curso e a distribuição da artéria braquial profunda no compartimento posterior foram relativamente coincidentes com relatos prévios. Variações arteriais podem ser danificadas de maneira iatrogênica se não forem adequadamente documentadas. O conhecimento desse caso é muito importante na prática clínica e em cirurgias nesse compartimento para prevenção de qualquer injúria.
OBJECTIVE: The aim of this study was to evaluate the effect of oral tamoxifen treatment on the number of myofibroblasts present during the healing process after experimental bile duct injury. METHODS: The sample consisted of 16 pigs that were divided into two groups (the control and study groups). Incisions and suturing of the bile ducts were performed in the two groups. Tamoxifen (20 mg/day) was administered only to the study group. The animals were sacrificed after 30 days. Quantification of myofibroblasts in the biliary ducts was made through immunohistochemistry analysis using anti-alpha smooth muscle actin of the smooth muscle antibody. Immunohistochemical quantification was performed using a digital image system. RESULTS: In the animals treated with tamoxifen (20 mg/day), there was a significant reduction in immunostaining for alpha smooth muscle actin compared with the control group (0.1155 vs. 0.2021, p = 0.046). CONCLUSION: Tamoxifen reduced the expression of alpha smooth muscle actin in the healing tissue after bile duct injury, suggesting a decrease in myofibroblasts in the scarred area of the pig biliary tract. These data suggest that tamoxifen could be used in the prevention of biliary tract stenosis after bile duct surgeries.