Objective:To assess the effect of a 12-hour shift on mood states and sleepiness at the beginning and end of the shift. Method: Quantitative, cross-sectional and descriptive study. It was conducted with 70 neonatal intensive care unit nurses. The Brunel Mood Scale (BRUMS), Karolinska Sleepiness Scale (KSS), and a socio-demographic profile questionnaire were administered. Results: When the KSS and BRUMS scores were compared at the beginning of the shift associations were found with previous sleep quality (p ≤ 0.01), and quality of life (p ≤ 0.05). Statistical significant effects on BRUMS scores were also associated with previous sleep quality, quality of life, liquid ingestion, healthy diet, marital status, and shift work stress. When the beginning and end of the shift were compared, different KSS scores were seen in the group of all nurses and in the night shift one. Significant vigor and fatigue scores were observed within shift groups. Conclusion: A good night's sleep has positive effects on the individual`s mood states both at the beginning and the end of the shift. The self-perception of a good quality of life also positively influenced KSS and BRUMS scores at the beginning and end of the shift. Proper liquid ingestion led to better KSS and BRUMS scores. DESCRIPTORS INTRODUCTIONIntensive care unit (ICU) nurses have to provide high quality care for fragile patients (1) . Such care occurs in a technology-rich and rapidly changing environment, which gives rise to both human and nonhuman sources of error (2) . Workers with high demands have significantly enhanced risks of developing psychiatric disorders, with stress and fatigue as important contributing factors. Both acute fatigue and chronic fatigue negatively affect quality of life and performance (2) . Stress is a complex phenomenon that includes the psychophysiological stress event and its perception, intrinsic and extrinsic mediating factors, and the response (3) . It has been suggested that perceptions of stress in work situations are more influential than the stressors themselves. Stress can affect the physical health of nurses, manifesting as headaches, skin rashes, intestinal disorders and weight variations. Ultimately, and importantly, it affects the quality of patient care. Care of children with poor prognoses, workload, distrust of nurses' opinions by physicians, lack of knowledge and the limited experience of staff are possible stressors (4) . In addition, lack of support and respect within a team, long hours of work and the responsibility of taking care of critically ill patients, can be added to the list of stressors (5) . ICU nurses must also deal with the patients' family members (3) . Intensive care unit nurses usually work shifts; according to a number of studies 12-h shifts are associated with difficulty in staying awake, sleep deprivation and a threefold risk of making mistakes (6)(7) . A number of studies have quantified the negative impact of sleep deprivation on shift work, fatigue, performance and learning (8) .Comparisons betw...
A inatividade física tem sido descrita como um dos principais problemas de saúde pública do século XXI. Neste contexto, a atividade física desempenha um papel importante na redução da prevalência de sedentarismo, melhorando a qualidade de vida e a saúde mental dos indivíduos. Objetivo: Este estudo teve como objetivo analisar a influência de seis meses de atividade física (AF) na qualidade de vida (QV) e estados de humor (EH) de adultos jovens. Métodos: Uma amostra de 32 indivíduos completou uma bateria de questionários para avaliar o seu nível de atividade física, qualidade de vida e estados de humor. Eles foram separados em dois grupos: sedentários (n = 15) e fisicamente ativos (n = 17). O International Physical Activity Questionnaire (IPAQ) foi utilizado para avaliar os níveis de AF, o WHO Quality of Life-BREF (WHOQOL_Bref) para QV e a Escala Brasileira de Humor (BRAMS) para os EH. Foi realizada análise fatorial de variância com medidas repetidas e teste post-hoc de Tukey (p ≤ 0,05) para QV e análise inferencial para os EH. Resultados: Escores de QV foram significantemente maiores para o grupo fisicamente ativo nos domí- nios ambiental e social. Da mesma forma, EH apresentaram maiores escores na dimensão Vigor para o grupo fisicamente ativo depois de seis meses, sem contudo, atingir os níveis de significância estatística. Conclusões: Estes resultados sugerem que AF pode influenciar positivamente aspectos na qualidade de vida do indivíduo. Contudo, os dados não evidenciam uma influência significativa da AF nos estados de humor
RESUMOEste estudo objetivou apresentar a importância dos tempos de reação simples, cognitivo e motor, na seleção de talentos para o tênis. Participaram 240 jovens de seis a 13 anos (9,61 ±1,64), de ambos os sexos. Os voluntários foram submetidos e aprovados, na primeira fase do estudo, em um teste de habilidades específicas da modalidade (ITN). Na segunda fase, foram submetidos a um teste de tempo de reação simples. Foi realizada Ancova para identificar diferenças no ITN tendo o tempo de reação como variável independente e idade como covariável. Os resultados mostraram que houve diferença para o ITN entre os grupos de tempo de reação cognitivo ajustado para a idade (p=0,04) e não houve diferença entre as médias de ITN quando se comparou o tempo de reação motor (p=0,162). Conclui-se que o tempo de reação cognitivo é uma variável importante no processo de detecção de talentos em tênis.Palavras-chave: Tenistas. Detecção de talentos. Avaliação cognitiva. Tomada de decisão.
One seeks, in this paper, to pare the performances of four different lamps operating with harmonic injection. S of the models studied are compared with sults for the lamp fed with sine waveform v network connected between the inverter a behavior of incremental impedance is obser by the variation in the imposed current to this comparison one chooses the model pr performance rates at both low and high freq
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
The long duration test of electrical equipment is an important tool for users and manufacturers to determine precise information as, for example, equipment operational limits, lifespan, thermal behavior, etc. Although useful, these long duration tests are usually conducted using passive elements such as in the burn-in test, consuming a great amount of energy and with limited flexibility to emulate different loading profiles (e.g., current and voltage levels, harmonics content, etc.). In this context, to perform tests in power transformer emulating its real operation conditions can be a difficult task, since the standards procedures do not emulate the loading levels and the burn-in test consumes a high quantity of energy. Moreover, in distribution networks, the transformers are submitted to an increasing level of nonlinear voltage and current. Thus, it is important to test them under these conditions. The use of active electronic loads (AEL) is an alternative to solve these problems since the device structure can have regenerative proprieties and its control can emulate different types of load. This paper presents an AEL to perform tests in power transformers with low energy consumption that is capable of imposing controlled voltage and current (frequency, level, and harmonic distortion) to the transformer under test. The proposed methodology is validated by experimental results of a 50 kVA prototype.INDEX TERMS Active electronic load, load emulator, power transformer test, resonant control, voltage and frequency control.
Hypersensitivity pneumonia is an immune-mediated inflammation of the lung parenchyma that occurs in previously susceptible individuals, after inhalation of antigens, usually organic. In recent years, various chemical agents have been described as inducers of hypersensitivity pneumonia, including exposure to high concentrations of pesticides. The objective of the present case report was to describe a possible association of hypersensitivity pneumonia with pesticide chronic inhalation and to draw attention to the importance of early diagnosis. The patient was 72-year-old man who worked for over 30 years as a health agent fumigating pesticides in rural and urban areas. He had progressive dyspnea and cough for the past 3 years. Chest tomography demonstrated parenchymal bands, honeycombing, and diffuse air trapping. Spirometry showed a severe restrictive pattern. Surgical lung biopsy was indicated, which confirmed the diagnosis of hypersensitivity pneumonia. Due to the wide use of pesticides in Brazil, the knowledge of their association with hypersensitivity pneumonia is of great importance in warning the teams involved in health care and surveillance of these workers, providing earlier diagnoses, with better prognosis. On the contrary, late diagnoses, such as that of the case reported, have important health impacts. As a priority, preventive measures must be taken to protect exposed individuals.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.