In face of the huge impact of COVID-19 on the society,the rising concerns on public health have brought the unprecedented opportunities to the upgrading of urban landscapes.The public concerns on health issues have sh...In face of the huge impact of COVID-19 on the society,the rising concerns on public health have brought the unprecedented opportunities to the upgrading of urban landscapes.The public concerns on health issues have shifted from the physical and mental health to the macro aspect of social health.To satisfy urban residents’ needs on healthy life is the top priority in urban public landscape designs,and also a necessary requirement of future landscape designs.Urban park is an important public activity space,and the urgent task is to explore how to build a healthy urban park and promote public health with urban parks.展开更多
A novel fiber temperature sensor based on multimode interference theory is proposed and experimentally demonstrated.The sensing head is formed by a fiber bragg grating(FBG)connected with single-mode-no core-single-mod...A novel fiber temperature sensor based on multimode interference theory is proposed and experimentally demonstrated.The sensing head is formed by a fiber bragg grating(FBG)connected with single-mode-no core-single-mode fiber(SNS)fiber structure which consists of two sections of single mode fiber and no-core fiber.Using such a structure,not only the reflective measurement can be realized,but also the need for a gold-plated film can be avoided at the end of the fiber to enhance the reflected light signal.More importantly,the sensitivity is increased by 4 times as compared with the conventional FBG temperature sensor according to the experimental results,and it also provides the development space for multi-parameters monitoring.展开更多
文摘In face of the huge impact of COVID-19 on the society,the rising concerns on public health have brought the unprecedented opportunities to the upgrading of urban landscapes.The public concerns on health issues have shifted from the physical and mental health to the macro aspect of social health.To satisfy urban residents’ needs on healthy life is the top priority in urban public landscape designs,and also a necessary requirement of future landscape designs.Urban park is an important public activity space,and the urgent task is to explore how to build a healthy urban park and promote public health with urban parks.
基金supported by the National Natural Science Foundation of China(No.U1537102)the Fund of Aeronautics Science(No.20152852036,20170252004)+2 种基金the Fundamental Research Funds for the Central Universities(NS2016004)the Shanghai Academy of Spaceflight Technology(No.SAST2015062)the State Key Laboratory of Mechanics and Control of Mechanical Structures(Nanjing University of Aeronautics and astronautics)(No.MCMS-0516K01)
文摘A novel fiber temperature sensor based on multimode interference theory is proposed and experimentally demonstrated.The sensing head is formed by a fiber bragg grating(FBG)connected with single-mode-no core-single-mode fiber(SNS)fiber structure which consists of two sections of single mode fiber and no-core fiber.Using such a structure,not only the reflective measurement can be realized,but also the need for a gold-plated film can be avoided at the end of the fiber to enhance the reflected light signal.More importantly,the sensitivity is increased by 4 times as compared with the conventional FBG temperature sensor according to the experimental results,and it also provides the development space for multi-parameters monitoring.
