Resulting from the rising levels of atmospheric carbon, ocean acidification has become a global problem. It has significant impacts on the development, survival, growth and physiology of marine organisms. Therefore, a...Resulting from the rising levels of atmospheric carbon, ocean acidification has become a global problem. It has significant impacts on the development, survival, growth and physiology of marine organisms. Therefore, a high- precision sensor is urgently needed to measure the pH of sea-water. Iridium wire with a diameter of 0.25 mm is used as the substrate, and an Ir/Ir（OH）x pH electrode is prepared by a one-step electrochemical method in a LiOH solution at the room temperature. A scanning electron microscope （SEM） observation reveals that it is coated with nanoscale particles. In laboratory tests, the electrode exhibits a very promising pH response, with an ideal Nernst slope （56.14-59.52）, fast response, good stability and long fife-span in tested pH buffer solutions. For a sea trial, four pH electrodes and one Ag/AgC1 reference electrode are integrated with a self-made chemical sensor, and a profile detection of nearly 70 m is implemented near Newport Harbor, California on August 3, 2015. The results reflect that the pH value measured by the sensor is very close to the data given by Sea-Bird 911 plus CTD, with a difference value ranging from 0.000 075 to 0.064 719. And the sensor shows a better data matching degree in 0-40 m water depth. In addition, the high precision and accuracy of the sensor make it possible to use in the ocean observation field.展开更多
It was the year Paul Revere sounded the midnightalarm that led to the battles of Lexington and Concord,and the American Revolution exploded on a startledworld. In 1775, in the prosperous town of Newport,R.I., Judah To...It was the year Paul Revere sounded the midnightalarm that led to the battles of Lexington and Concord,and the American Revolution exploded on a startledworld. In 1775, in the prosperous town of Newport,R.I., Judah Touro was born into a thriving Jewishcommunity of perhaps 1000 souls.展开更多
This paper has analysed the general solar-Terrestrial effect of major event in March, 1989 from 7 parameters using same time scale.The largest magnetic storm from AA index is compared on 8 stations of Changchun (43 &#...This paper has analysed the general solar-Terrestrial effect of major event in March, 1989 from 7 parameters using same time scale.The largest magnetic storm from AA index is compared on 8 stations of Changchun (43 ° 49 ′ 38 ″ N), Beijing (40 ° 02′ 22 ″ N), Wuhan(30 ° 31 ′ 39 ″ N) and Guangzhou (23 ° 05′ 34 ″ N) in China and Newport of Washington (48. 263 ° N), Boulder of Colorado (40. 138 ° N), Fredericksburg of VA (38. 205 ° N) and Norda of Mississippi in U. S. A.The ARMA (p, q) Autoregressive slide average model is used to simulate the geomagnetic storm data in 4 stations of China. The periodicity analysis, characteristic root and equation are used. The different models and characters are shown and explained.展开更多
SPIE-Vol.4328 0320659SPIE 会议录,卷4328:智能结构与材料的测量仪器与传感器=Proceedings of SPIE,Vol.4328:Sensory phe-nomena and measurement instrumentation for smartstructures and marerials[会,英]/SPIE-The InternationalS...SPIE-Vol.4328 0320659SPIE 会议录,卷4328:智能结构与材料的测量仪器与传感器=Proceedings of SPIE,Vol.4328:Sensory phe-nomena and measurement instrumentation for smartstructures and marerials[会,英]/SPIE-The InternationalSociety for Optical Engineering.—356P.(E)本会议录收集了在美国 Newport Beach展开更多
SPIE-Vol-4326 0319385SPIE 会议录,卷4326:智能结构中模拟、信号处理及控制=Proceedings of SPIE.Vol.4326:Modeling,signalprocessing and control in smart structures[会,英]/SPIE-The International Society for Opdcal Engineeri...SPIE-Vol-4326 0319385SPIE 会议录,卷4326:智能结构中模拟、信号处理及控制=Proceedings of SPIE.Vol.4326:Modeling,signalprocessing and control in smart structures[会,英]/SPIE-The International Society for Opdcal Engineering.—614P.(E)本会议录收集了在美国 Newport Beach 召开的智能结构中模拟,信号处理与控制会议上发表的56篇论文,内容涉及智能结构控制,波束反射控制,磁带材料,展开更多
SPIE-Vol.4337 0324566SPIE 会议录,卷4337:民用建筑系统监测与管理=Proceedings of SPIE,Vol.4337:Health monitoring andmanagement of civil infrastructure systems[会,英]/SPIE-The International Society for Optical Engineer-i...SPIE-Vol.4337 0324566SPIE 会议录,卷4337:民用建筑系统监测与管理=Proceedings of SPIE,Vol.4337:Health monitoring andmanagement of civil infrastructure systems[会,英]/SPIE-The International Society for Optical Engineer-ing.—528P.(E)本会议录收集了在美国 Newport Beach 召开的民用建筑系统监测与管理会议上发表的52篇论文。内容涉及民用基础设施状态监测,复杂动态系统信息管理,21世纪的桥梁管理,混凝土路面维护,桥梁水泥车道耐久性监测,基于固定负荷重新分布的横梁损伤检测,展开更多
基金The Key Laboratory Project of State Oceanic Administration for Marine Ecosystem and Biogeochemistry of China under contract No.529101-X21601the Foundation from Wendy Schmidt Ocean Health XPRIZE and the Southern California Coastal Water Research Project
文摘Resulting from the rising levels of atmospheric carbon, ocean acidification has become a global problem. It has significant impacts on the development, survival, growth and physiology of marine organisms. Therefore, a high- precision sensor is urgently needed to measure the pH of sea-water. Iridium wire with a diameter of 0.25 mm is used as the substrate, and an Ir/Ir（OH）x pH electrode is prepared by a one-step electrochemical method in a LiOH solution at the room temperature. A scanning electron microscope （SEM） observation reveals that it is coated with nanoscale particles. In laboratory tests, the electrode exhibits a very promising pH response, with an ideal Nernst slope （56.14-59.52）, fast response, good stability and long fife-span in tested pH buffer solutions. For a sea trial, four pH electrodes and one Ag/AgC1 reference electrode are integrated with a self-made chemical sensor, and a profile detection of nearly 70 m is implemented near Newport Harbor, California on August 3, 2015. The results reflect that the pH value measured by the sensor is very close to the data given by Sea-Bird 911 plus CTD, with a difference value ranging from 0.000 075 to 0.064 719. And the sensor shows a better data matching degree in 0-40 m water depth. In addition, the high precision and accuracy of the sensor make it possible to use in the ocean observation field.
文摘It was the year Paul Revere sounded the midnightalarm that led to the battles of Lexington and Concord,and the American Revolution exploded on a startledworld. In 1775, in the prosperous town of Newport,R.I., Judah Touro was born into a thriving Jewishcommunity of perhaps 1000 souls.
文摘This paper has analysed the general solar-Terrestrial effect of major event in March, 1989 from 7 parameters using same time scale.The largest magnetic storm from AA index is compared on 8 stations of Changchun (43 ° 49 ′ 38 ″ N), Beijing (40 ° 02′ 22 ″ N), Wuhan(30 ° 31 ′ 39 ″ N) and Guangzhou (23 ° 05′ 34 ″ N) in China and Newport of Washington (48. 263 ° N), Boulder of Colorado (40. 138 ° N), Fredericksburg of VA (38. 205 ° N) and Norda of Mississippi in U. S. A.The ARMA (p, q) Autoregressive slide average model is used to simulate the geomagnetic storm data in 4 stations of China. The periodicity analysis, characteristic root and equation are used. The different models and characters are shown and explained.
文摘SPIE-Vol.4328 0320659SPIE 会议录,卷4328:智能结构与材料的测量仪器与传感器=Proceedings of SPIE,Vol.4328:Sensory phe-nomena and measurement instrumentation for smartstructures and marerials[会,英]/SPIE-The InternationalSociety for Optical Engineering.—356P.(E)本会议录收集了在美国 Newport Beach
文摘SPIE-Vol-4326 0319385SPIE 会议录,卷4326:智能结构中模拟、信号处理及控制=Proceedings of SPIE.Vol.4326:Modeling,signalprocessing and control in smart structures[会,英]/SPIE-The International Society for Opdcal Engineering.—614P.(E)本会议录收集了在美国 Newport Beach 召开的智能结构中模拟,信号处理与控制会议上发表的56篇论文,内容涉及智能结构控制,波束反射控制,磁带材料,
文摘SPIE-Vol.4337 0324566SPIE 会议录,卷4337:民用建筑系统监测与管理=Proceedings of SPIE,Vol.4337:Health monitoring andmanagement of civil infrastructure systems[会,英]/SPIE-The International Society for Optical Engineer-ing.—528P.(E)本会议录收集了在美国 Newport Beach 召开的民用建筑系统监测与管理会议上发表的52篇论文。内容涉及民用基础设施状态监测,复杂动态系统信息管理,21世纪的桥梁管理,混凝土路面维护,桥梁水泥车道耐久性监测,基于固定负荷重新分布的横梁损伤检测,
