RESUMO
5G (fifth-generation technology) technologies are becoming more mainstream thanks to great efforts from telecommunication companies, research facilities, and governments. This technology is often associated with the Internet of Things to improve the quality of life for citizens by automating and gathering data recollection processes. This paper presents the 5G and IoT technologies, explaining common architectures, typical IoT implementations, and recurring problems. This work also presents a detailed and explained overview of interference in general wireless applications, interference unique to 5G and IoT, and possible optimization techniques to overcome these challenges. This manuscript highlights the importance of addressing interference and optimizing network performance in 5G networks to ensure reliable and efficient connectivity for IoT devices, which is essential for adequately functioning business processes. This insight can be helpful for businesses that rely on these technologies to improve their productivity, reduce downtime, and enhance customer satisfaction. We also highlight the potential of the convergence of networks and services in increasing the availability and speed of access to the internet, enabling a range of new and innovative applications and services.
RESUMO
Milk is the natural food with the highest biological quality for the human population and its production can be affected by several sanitary factors and management conditions. With the objective of identifying influence factors on milk compositional and sanitary quality in a region with wide productive potential in the Colombian Orinoquia, an experiment was carried out in two contrasting climatic seasons. For the milk compositional analysis, samples of daily production from 30 dual-purpose systems were analyzed. Similarly, the udder sanitary status of 300 cows was studied using the California Mastitis Test (CMT). Data analysis included mixed models, Pearson correlations, frequency tables, and the Kruskal-Wallis test. The results showed that the total daily milk production of the farm and the season influenced the milk compositional quality. The farms with milk productions lower than 100 kg/day presented the highest levels of protein, lactose, solid non-fat (SNF), and density, while in the rainy season, the milk quality was higher compared to the dry season. The CMT test indicated that only 7.6% of the evaluated mammary quarters presented two or more degrees of positivity. There is an opportunity to improve the milk compositional quality by improving the nutritional offer for animals during the year. The low CMT positivity indicates that, in the calf-at-foot milking system, the presence of subclinical mastitis is not a determining variable in milk production.
RESUMO
Orchid diversity provides a unique opportunity to further our understanding of biotic and abiotic factors linked to patterns of richness, endemism, and phylogenetic endemism in many regions. However, orchid diversity is consistently threatened by illegal trade and habitat transformation. Here, we identified areas critical for orchid conservation in the biogeographic province of Megamexico. For this purpose, we evaluated orchid endemism, phylogenetic diversity, and phylogenetic endemism within Megamexico and characterized orchid life forms. Our results indicate that the majority of the regions with the highest estimates of endemism and phylogenetic endemism are in southern Mexico and northern Central America, mostly located on the Pacific side of Megamexico. Among the most important orchid lineages, several belong to epiphytic lineages such as Pleurothallidinae, Laeliinae and Oncidiinae. We also found that species from diverse and distantly related lineages converge in montane forests where suitable substrates for epiphytes abound. Furthermore, the southernmost areas of phylogenetic diversity and endemism of Megamexico are in unprotected areas. Thus, we conclude that the most critical areas for orchid conservation in Megamexico are located in southern Mexico and northern Central America. We recommend that these areas should be given priority by the Mexican system of natural protected areas as complementary conservation areas.
RESUMO
Introducción: uno de los efectos nocivos de las tecnologías de la información y la comunicación (TIC) es su uso sin control, lo que ha generado una adicción hacia ellas. Objetivo: conocer la prevalencia de tecnoadicción de las TIC en estudiantes universitarios de nivel superior, posgrado y profesionistas de diferentes áreas. Metodología: estudio descriptivo cuya población fueron universitarios de nivel superior, posgrado y profesionistas de diferentes áreas de la Universidad Nacional Autónoma de México (UNAM) y del Instituto Politécnico Nacional (IPN) durante el ciclo escolar 2020-2. El muestreo fue no probabilístico. Resultados: al analizar los datos de la Escala de adicción de internet, el 49% respondió que permanece en internet más tiempo del que desea y el 38.2% mencionó que intenta reducir la cantidad de tiempo que pasa en línea. En cuanto al uso compulsivo, el 32.8% mencionó que sigue usando internet a pesar de que su intención es reducir su uso; el 30.5% dice que está corto de sueño debido al uso de internet. Conclusiones: existe tecnoadicción entre profesionistas y estudiantes universitarios de nivel superior y posgrado de la UNAM y del IPN. El personal de salud debe establecer estrategias de prevención del uso del internet para evitar trastornos de salud mental como depresión y aislamiento, entre otros.
Background: One of the harmful effects of the information and communication technologies (ICTs) is their uncontrolled use, which has generated an addiction to them. Objective: To know the prevalence of technology addiction of ICTs in university students of higher level, postgraduate and professionals from different areas. Methodology: Descriptive study whose population was university students of higher level, postgraduate degrees and professionals from different areas of the National Autonomous University of Mexico (UNAM) and the National Polytechnic Institute (IPN) during the 2020-2 school year. The sampling was non-probabilistic. Results: When analyzing the data of the Internet addiction scale, 49% responded that they stay on the internet much more time than what they want to, and 38.2% mentioned that they try to reduce the amount of time they spend online. As for compulsive use, 32.8% mentioned that they continue to use the internet despite the fact that their intention is to use it less; 30.5% say they are short of sleep due to internet use. Conclusions: There is technology addiction among professionals and university students of higher and postgraduate levels of UNAM and IPN. Health personnel must establish prevention strategies for the use of internet, in orded to avoid mental health disorders such as depression, isolation, among others.
Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Estudantes/estatística & dados numéricos , Transtorno de Adição à Internet/epidemiologia , Instituições Acadêmicas/estatística & dados numéricos , Epidemiologia Descritiva , Prevalência , Inquéritos e Questionários , Tecnologia da Informação/estatística & dados numéricosRESUMO
Introducción: En su devenir en la historia, la profesión de enfermería ha adoptado y construido símbolos que le representan socialmente. Los más comunes son el uniforme blanco, la capa, la lampara y la cofia. Objetivo: Conocer las causas de resistencia en el uso de la cofia en estudiantes de la licenciatura de enfermería y en enfermería obstétrica. Material y Métodos: Se realizó un estudio descriptivo, la unidad de análisis fueron estudiantes de las licenciaturas en enfermería. La muestra fue de 80 estudiantes del sexo femenino Se aplico un cuestionario, que consta de los siguientes apartados: datos generales y uso y resistencia de la cofia. Resultados: Las estudiantes refieren que el 71% usa la cofia como parte del uniforme, 61% por imposición y solo el 15% la usa como símbolo. El 95% considera que no es útil su uso para el rol de enfermería. El 96% de los estudiantes considera que el uso de la cofia es un factor de riesgo porque puede ser un fomite. Conclusiones: La principal causa de resistencia del uso de la cofia es que no le ven utilidad y la consideran un factor de riesgo para la Infecciones asociadas en la atención a la salud. Sin embargo, no debemos de perder de vista los factores sociohistóricos y las necesidades de cada época y contexto geográfico.
Assuntos
Humanos , Enfermagem , InfecçõesRESUMO
BACKGROUND: The SARS-CoV-2 virus, which emerged in late 2019 in Wuhan province, China, has shown a wide spectrum of manifestations, some of which it shares with some autoimmune disorders. Until now, the association of SARS-CoV-2 with immune thrombocytopenia (ITP) is poorly understood, since the mechanisms that explain the complex relationship between these two prothrombotic states are still unknown. CLINICAL CASE: It is presented the case of a 66-year-old woman, with no chronic disease history, who arrived at the Emergency Department due to respiratory symptoms. It was carried out a polymerase chain reaction with reverse transcriptase, which was positive for SARS-CoV-2. Isolated thrombocytopenia was found in laboratory studies, which was protocolized by ruling out other causes and finally diagnosing ITP secondary to COVID-19. Intravenous steroids treatment was given observing a complete recovery in platelet levels. CONCLUSIONS: Until now, the association of IPT and COVID-19 is unclear and presents challenges in treatment. Steroids continue to be the first choice with the indication to reduce their dose and duration to the minimum necessary. Other second-line treatments present more questions than answers in the context of this pandemic.
INTRODUCCIÓN: el virus del SARS-CoV-2, el cual surgió a finales de 2019 en la provincia de Wuhan, China, ha mostrado un espectro amplio de manifestaciones, algunas de las cuales comparte con algunos trastornos autoinmunes. La asociación del SARS-CoV-2 con la trombocitopenia inmune (TIP) es hasta ahora poco entendida, pues todavía no se conocen los mecanismos que expliquen la compleja relación entre estos dos estados protrombóticos. CASO CLÍNICO: se presenta el caso de una mujer de 66 años, sin antecedentes crónicos, que acudió al Servicio de Urgencias por sintomatología respiratoria. Se realizó prueba de reacción en cadena de la polimerasa con transcriptasa reversa, la cual fue positiva para SARS-CoV-2. En los estudios de laboratorio se encontró trombocitopenia aislada que se protocolizó, por lo que se descartaron otras causas de esta y se diagnosticó TIP secundaria a COVID-19. Se inició tratamiento con esteroides intravenosos y se obtuvo una respuesta completa. CONCLUSIONES: la asociación de TIP y COVID-19 es hasta ahora poco clara y plantea retos en el tratamiento. Los esteroides continúan siendo de primera elección con la indicación de disminuir su dosis y duración a las mínimas necesarias. Otros tratamientos de segunda línea plantean más dudas que respuestas en el contexto de esta pandemia.