A sedentary lifestyle and obesity are important risk factors for severe COVID-19 complications and death[1,2].Excessive adipose tissue(AT)might contribute to more extensive viral spread with increased shedding,immune ...A sedentary lifestyle and obesity are important risk factors for severe COVID-19 complications and death[1,2].Excessive adipose tissue(AT)might contribute to more extensive viral spread with increased shedding,immune activation,and cytokine amplification[3].Several factors secreted by contracting muscle,termed myokines,mediate the beneficial effects of exercise in a wide range of diseases,including obesity[4].Thus,we conducted a study to explore the potential role of myokines of the fibronectin type III domain-containing family,FNDC4 and FNDC5,in mechanisms underlying the increased susceptibility to COVID-19 complications in obesity.展开更多
柔性配电网(Flexible Distribution Network,FDN)背景下,配电网采用交直流混合的闭环供电结构,具有改善潮流分布、功率迅速调节、可控性强等特点,是未来配网发展的主要形式。如何提高其可再生能源的利用率以及实现电能质量改善,将会是...柔性配电网(Flexible Distribution Network,FDN)背景下,配电网采用交直流混合的闭环供电结构,具有改善潮流分布、功率迅速调节、可控性强等特点,是未来配网发展的主要形式。如何提高其可再生能源的利用率以及实现电能质量改善,将会是柔性配电网研究的重点。储能技术作为能源调度的重要单元,可实现削峰填谷,提高可再生能源接入的适应性,并从电压、频率等多方面提升电能质量,为提升柔性配电网运行优化提供了新方案。文章介绍了传统和广义储能技术并对比分析其特点;从多方面分析了储能应用与改善柔性配电网的研究现状;针对柔性配电网“网、源、荷”多能流耦合的特征对储能技术应用其提高优化运行进行展望。展开更多
Heterogeneous Wireless Sensor Networks (WSNs) have different sensing ranges and computing power in the midst of various resource constraints such as limited battery power, reduced transmit power and network potential....Heterogeneous Wireless Sensor Networks (WSNs) have different sensing ranges and computing power in the midst of various resource constraints such as limited battery power, reduced transmit power and network potential. This paper proposes new hybrid energy efficient transmission protocol called Hybrid Transmission Protocol (HTP). The proposed algorithm focuses on the issues of throughput dreadful conditions and limited power on mobile nodes due to conflicts in multi-cell wireless networks. The design principle of the proposed routing algorithm is to introduce a new border cluster between the sink nodes and the cluster-heads in order to lengthen the lifetime of the network nodes with minimized energy consumption to attain energy efficiency. The creation of clusters is done by making use of the sensor nodes formation that has a Cluster-Head (CH) used for performing the data aggregation in the sensor nodes of the cluster. Later the data that is aggregated is transmitted with multiple hops to the base station and in turn, this process leads to the reduction in the bandwidth through the elimination of the redundant data present in a cluster. The performance results indicate that the HTP proposed gained greater network lifetime, better performance and higher throughput compared to the other available algorithms.展开更多
基金This work was supported by Fondo de Investigación Sanitaria-FEDER(FIS PI19/00785 and PI19/00990)the Instituto de Salud Carlos III and the Department of Health of the Gobierno de Navarra(exp.0011-3638-2020-000002).
文摘A sedentary lifestyle and obesity are important risk factors for severe COVID-19 complications and death[1,2].Excessive adipose tissue(AT)might contribute to more extensive viral spread with increased shedding,immune activation,and cytokine amplification[3].Several factors secreted by contracting muscle,termed myokines,mediate the beneficial effects of exercise in a wide range of diseases,including obesity[4].Thus,we conducted a study to explore the potential role of myokines of the fibronectin type III domain-containing family,FNDC4 and FNDC5,in mechanisms underlying the increased susceptibility to COVID-19 complications in obesity.
文摘柔性配电网(Flexible Distribution Network,FDN)背景下,配电网采用交直流混合的闭环供电结构,具有改善潮流分布、功率迅速调节、可控性强等特点,是未来配网发展的主要形式。如何提高其可再生能源的利用率以及实现电能质量改善,将会是柔性配电网研究的重点。储能技术作为能源调度的重要单元,可实现削峰填谷,提高可再生能源接入的适应性,并从电压、频率等多方面提升电能质量,为提升柔性配电网运行优化提供了新方案。文章介绍了传统和广义储能技术并对比分析其特点;从多方面分析了储能应用与改善柔性配电网的研究现状;针对柔性配电网“网、源、荷”多能流耦合的特征对储能技术应用其提高优化运行进行展望。
文摘Heterogeneous Wireless Sensor Networks (WSNs) have different sensing ranges and computing power in the midst of various resource constraints such as limited battery power, reduced transmit power and network potential. This paper proposes new hybrid energy efficient transmission protocol called Hybrid Transmission Protocol (HTP). The proposed algorithm focuses on the issues of throughput dreadful conditions and limited power on mobile nodes due to conflicts in multi-cell wireless networks. The design principle of the proposed routing algorithm is to introduce a new border cluster between the sink nodes and the cluster-heads in order to lengthen the lifetime of the network nodes with minimized energy consumption to attain energy efficiency. The creation of clusters is done by making use of the sensor nodes formation that has a Cluster-Head (CH) used for performing the data aggregation in the sensor nodes of the cluster. Later the data that is aggregated is transmitted with multiple hops to the base station and in turn, this process leads to the reduction in the bandwidth through the elimination of the redundant data present in a cluster. The performance results indicate that the HTP proposed gained greater network lifetime, better performance and higher throughput compared to the other available algorithms.
