Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of compara...Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of comparatively precise non-standard filling equip ment,which uses high-precision quantitative cylinder to add gear oil into the automobile gearbox through the pipeline.展开更多
Advances in sensor technology have allowed the significant progress in the monitoring of noxious compounds in the sea, providing real-time detection so as to prevent risks associated with the diffusion and dispersion ...Advances in sensor technology have allowed the significant progress in the monitoring of noxious compounds in the sea, providing real-time detection so as to prevent risks associated with the diffusion and dispersion of toxic substances in the environment. An important element in the overall picture is the harmful algal blooms which pose serious threats to marine ecosystems through the production of toxins that accumulate in filter-feeders and ultimately impact both human health and fisheries. Domoic acid is a neurotoxic amino acid produced by marine planktonic diatoms of the genus Pseudo-nitzschia. Here we monitored domoic acid production by natural Pseudo-nitzschia populations in phytoplankton samples collected along the Middle Tyrrhenian coast, over the course of one year, using selective immunosensors based on screenprinted electrodes, using differential pulse voltammetry as the electrochemical technique, to yield quantitative outputs. In this work, disposable devices have been applied for monitoring the production of domoic acid on algal extracts and the results have been validated by conventional high pressure liquid chromatography-ultraviolet detection methods. The data obtained revealed the presence of domoic acid in Italian phytoplankton, especially in coastal impacted areas, highlighting the potential risk of toxin entering into marine food webs and the environment. Immunosensors based on screen-printed electrodes prove to be effective tools for annual monitoring of domoic acid in seawater samples, thus providing a reliable early warning system relative to health and economic impact of algal toxins.展开更多
介绍一种面向发射台站的中央无线数字广播电视信号自动化监测平台。平台整合了发射机监管和多画面监测报警两个模块,通过TS Over IP技术和用户数据报协议(User Datagram Protocol,UDP)实现中央广播电视节目的多通道异步串行接口(Asynchr...介绍一种面向发射台站的中央无线数字广播电视信号自动化监测平台。平台整合了发射机监管和多画面监测报警两个模块,通过TS Over IP技术和用户数据报协议(User Datagram Protocol,UDP)实现中央广播电视节目的多通道异步串行接口(Asynchronous Serial Interface,ASI)码流和地面数字多媒体广播(Digital Terrestrial Multimedia Broadcasting,DTMB)解调监测,为发射台站提供全面且灵活的内容监测和台站管理功能,在缩短故障处置时间、改善播出质量、降低运维成本等方面成效显著。展开更多
文摘Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of comparatively precise non-standard filling equip ment,which uses high-precision quantitative cylinder to add gear oil into the automobile gearbox through the pipeline.
文摘Advances in sensor technology have allowed the significant progress in the monitoring of noxious compounds in the sea, providing real-time detection so as to prevent risks associated with the diffusion and dispersion of toxic substances in the environment. An important element in the overall picture is the harmful algal blooms which pose serious threats to marine ecosystems through the production of toxins that accumulate in filter-feeders and ultimately impact both human health and fisheries. Domoic acid is a neurotoxic amino acid produced by marine planktonic diatoms of the genus Pseudo-nitzschia. Here we monitored domoic acid production by natural Pseudo-nitzschia populations in phytoplankton samples collected along the Middle Tyrrhenian coast, over the course of one year, using selective immunosensors based on screenprinted electrodes, using differential pulse voltammetry as the electrochemical technique, to yield quantitative outputs. In this work, disposable devices have been applied for monitoring the production of domoic acid on algal extracts and the results have been validated by conventional high pressure liquid chromatography-ultraviolet detection methods. The data obtained revealed the presence of domoic acid in Italian phytoplankton, especially in coastal impacted areas, highlighting the potential risk of toxin entering into marine food webs and the environment. Immunosensors based on screen-printed electrodes prove to be effective tools for annual monitoring of domoic acid in seawater samples, thus providing a reliable early warning system relative to health and economic impact of algal toxins.
文摘介绍一种面向发射台站的中央无线数字广播电视信号自动化监测平台。平台整合了发射机监管和多画面监测报警两个模块,通过TS Over IP技术和用户数据报协议(User Datagram Protocol,UDP)实现中央广播电视节目的多通道异步串行接口(Asynchronous Serial Interface,ASI)码流和地面数字多媒体广播(Digital Terrestrial Multimedia Broadcasting,DTMB)解调监测,为发射台站提供全面且灵活的内容监测和台站管理功能,在缩短故障处置时间、改善播出质量、降低运维成本等方面成效显著。
