To the Editor:Radiation therapy(RT)is important in treating thoracic tumors.However,RT inevitably causes damage to normal lungs,leading to radiation-induced lung injury(RILI).Physical and biological factors conjointly...To the Editor:Radiation therapy(RT)is important in treating thoracic tumors.However,RT inevitably causes damage to normal lungs,leading to radiation-induced lung injury(RILI).Physical and biological factors conjointly determine RILI.Understanding the role of physical technology development in reducing RILI is more conducive to developing and applying radiotherapy physical technology.The physical technology mentioned here is mainly based on the principles and methods of physics(engineering)applied in RT.展开更多
Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient a...Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient and reliable communication performance,as well as to support a mobile environment with a higher transmisison rate. As an amendment to IEEE 802.16d (for fixed broadband wireless access systems),IEEE 802.16e (for mobile broadband wireless access systems) introduces the Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technologies into the PHY,doubling the transmission rate while supporting a certain degree of mobility. In the future,more advanced Air Interface (AI) technology is to be applied in the IEEE 802.16m standard.展开更多
The integration of information technology and the continuous development of the information network make the college physical education degree of information technology constantly improving. College physical education...The integration of information technology and the continuous development of the information network make the college physical education degree of information technology constantly improving. College physical education is not only formed in the internal network, then sharing information resources and making sports teaching organization efficient as a whole, but communicate with the external network, formatting the Internet and producing significant changes in the teaching environment of college sports and sports teaching. College physical education is facing the reformation of better educated and digitization, virtualization, molecules, networking, agile and globalization. Physical education and sports teaching degree of information is closely related.展开更多
The increase in wood and wood-based products in the construction and furniture sectors has grown exponentially,generating severe environmental and socioeconomic impacts.Particleboard panels have been the main cost-ben...The increase in wood and wood-based products in the construction and furniture sectors has grown exponentially,generating severe environmental and socioeconomic impacts.Particleboard panels have been the main cost-benefit option on the market due to their lightness and lower cost compared to solid wood.However,the synthetic adhesives used in producing traditional particleboard panels cause serious harm to human health.Developing particleboard panels with fibrous waste and natural adhesives could be a sustainable alternative for these sectors.The work aimed to create particleboards with fibrous wastes from the pseudostem of the banana tree(Musa paradisiaca)and different proportions of the natural adhesive cassava starch-CS in replacement of synthetic adhesive urea-formaldehyde-UF.Five experimental groups were manufactured with banana trees and different percentages of UF and CS adhesives,namely(100UF–0%CS),(50%UF–50%CS),(30%UF–70%CS),(10%UF–90%CS)and(0%UF–100%CS).The particleboards had their physical-mechanical properties determined.The apparent density values did not show significant variation between the assessed treatments.Regarding the water absorption and thickness swelling,the best performances were observed for the panels made without the addition of CS(100%UF).For the mechanical properties of static bending strength and Janka hardness,it was identified that adding up to 50%CS did not interfere with the quality of the panels.These analyses show that the particleboard panels produced with wastes of the banana tree bonded with natural CS adhesivemay be an economically viable and environmentally correct alternative,positively strengthening the development of sustainable strategies.展开更多
Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements ob...Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements obtained by the Shanghai Institute of Technological Physics of the CAS in founding hi-tech enterprises, technological creation and talent transfer. Furthermore, in line with the Institute’s actual situation, it puts forward a new developmental model for the Institute by contriving ways of integrating the Institute’s performance with economic development.展开更多
In this tutorial physics, technology, and modeling of three base technologies for realizing various branching components for a DWDM optical network would be presented.
Large-scale physical model test of 30°inclined strata was conducted to investigate the damage mechanisms during the excavation and overloading using infrared detection.The experiment results were presented with t...Large-scale physical model test of 30°inclined strata was conducted to investigate the damage mechanisms during the excavation and overloading using infrared detection.The experiment results were presented with thermal images which were divided into three stages including a full face excavation stage,a staged excavation stage,and an overloading stage.The obtained results were compared with the previously reported results from horizontal,45?,60?,and vertical strata models.Infrared temperature(IRT)for 30°inclined strata model descended with multiple fluctuations during the full-face excavation.For the staged excavation,the excavation damage zone(EDZ)showed enhanced faulting-like strips as compared in the 45?,60?,and vertical models,indicating the intensified stress redistribution occurred in the adjacent rock mass.In contrast,EDZ for the horizontal strata existed in a plastic-formed manner.During the overloading,abnormal features in the thermal images were observed preceding the coalescence of the propagating cracks.The ultimate failure of the model was due primarily to the floor heave and the roof fall.展开更多
基金Project of Science,Technology Department of Yunnan Province and Kunming Medical University(No.202101AY070001-164)
文摘To the Editor:Radiation therapy(RT)is important in treating thoracic tumors.However,RT inevitably causes damage to normal lungs,leading to radiation-induced lung injury(RILI).Physical and biological factors conjointly determine RILI.Understanding the role of physical technology development in reducing RILI is more conducive to developing and applying radiotherapy physical technology.The physical technology mentioned here is mainly based on the principles and methods of physics(engineering)applied in RT.
文摘Despite the rapid development in Worldwide Interoperability for Microwave Access (WiMAX) technologies,key technologies for the Physical Layer (PHY) still need to be further improved so as to achieve highly efficient and reliable communication performance,as well as to support a mobile environment with a higher transmisison rate. As an amendment to IEEE 802.16d (for fixed broadband wireless access systems),IEEE 802.16e (for mobile broadband wireless access systems) introduces the Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technologies into the PHY,doubling the transmission rate while supporting a certain degree of mobility. In the future,more advanced Air Interface (AI) technology is to be applied in the IEEE 802.16m standard.
文摘The integration of information technology and the continuous development of the information network make the college physical education degree of information technology constantly improving. College physical education is not only formed in the internal network, then sharing information resources and making sports teaching organization efficient as a whole, but communicate with the external network, formatting the Internet and producing significant changes in the teaching environment of college sports and sports teaching. College physical education is facing the reformation of better educated and digitization, virtualization, molecules, networking, agile and globalization. Physical education and sports teaching degree of information is closely related.
基金financed by“Conselho Nacional de Desenvolvimento Cientifico e Tecnologico”(CNPq)and“Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior”(CAPES)-Finance Code 001.
文摘The increase in wood and wood-based products in the construction and furniture sectors has grown exponentially,generating severe environmental and socioeconomic impacts.Particleboard panels have been the main cost-benefit option on the market due to their lightness and lower cost compared to solid wood.However,the synthetic adhesives used in producing traditional particleboard panels cause serious harm to human health.Developing particleboard panels with fibrous waste and natural adhesives could be a sustainable alternative for these sectors.The work aimed to create particleboards with fibrous wastes from the pseudostem of the banana tree(Musa paradisiaca)and different proportions of the natural adhesive cassava starch-CS in replacement of synthetic adhesive urea-formaldehyde-UF.Five experimental groups were manufactured with banana trees and different percentages of UF and CS adhesives,namely(100UF–0%CS),(50%UF–50%CS),(30%UF–70%CS),(10%UF–90%CS)and(0%UF–100%CS).The particleboards had their physical-mechanical properties determined.The apparent density values did not show significant variation between the assessed treatments.Regarding the water absorption and thickness swelling,the best performances were observed for the panels made without the addition of CS(100%UF).For the mechanical properties of static bending strength and Janka hardness,it was identified that adding up to 50%CS did not interfere with the quality of the panels.These analyses show that the particleboard panels produced with wastes of the banana tree bonded with natural CS adhesivemay be an economically viable and environmentally correct alternative,positively strengthening the development of sustainable strategies.
文摘Running a research institute with its unique characteristics can enable the institute to do something valuable and make it develop in a big way. This article gives a panoramic review of the operational achievements obtained by the Shanghai Institute of Technological Physics of the CAS in founding hi-tech enterprises, technological creation and talent transfer. Furthermore, in line with the Institute’s actual situation, it puts forward a new developmental model for the Institute by contriving ways of integrating the Institute’s performance with economic development.
文摘In this tutorial physics, technology, and modeling of three base technologies for realizing various branching components for a DWDM optical network would be presented.
基金supported by the National Key Research and Development Plan of China (Grant No. 2016YFC0600901)the National Natural Science Foundation of China (Grant Nos. 51374214, 51134005 & 51574248)+1 种基金the Special Fund of Basic Research and Operating of China University of Mining & Technology, Beijing (Grant No. 2009QL03)the State Scholarship Fund of China
文摘Large-scale physical model test of 30°inclined strata was conducted to investigate the damage mechanisms during the excavation and overloading using infrared detection.The experiment results were presented with thermal images which were divided into three stages including a full face excavation stage,a staged excavation stage,and an overloading stage.The obtained results were compared with the previously reported results from horizontal,45?,60?,and vertical strata models.Infrared temperature(IRT)for 30°inclined strata model descended with multiple fluctuations during the full-face excavation.For the staged excavation,the excavation damage zone(EDZ)showed enhanced faulting-like strips as compared in the 45?,60?,and vertical models,indicating the intensified stress redistribution occurred in the adjacent rock mass.In contrast,EDZ for the horizontal strata existed in a plastic-formed manner.During the overloading,abnormal features in the thermal images were observed preceding the coalescence of the propagating cracks.The ultimate failure of the model was due primarily to the floor heave and the roof fall.
