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基于分光光度法快速检测果蔬中的拟除虫菊酯类农药残留

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现代食品 2021年第24期6卷 175-180,184页

作者：何丽媛倪树标武悦俊张红刚广东省科学院测试分析研究所(中国广州分析测试中心) 广东省化学测量与应急检测技术重点实验室广东省食品营养与安全快速检测仪器工程技术研究中心广东广州510070

基于羧酸酯酶的酶抑制原理,筛选猪肝羧酸酯酶作为酶液,并通过优化反应条件,建立分光光度法检测拟除虫菊酯类农药残留的快速检测方法。结果显示,猪肝羧酸酯酶水解底物后与固蓝B盐进行显色反应,在536 nm波长下,水解产物α-萘酚在0~6×10^(... 详细信息

基于羧酸酯酶的酶抑制原理,筛选猪肝羧酸酯酶作为酶液,并通过优化反应条件,建立分光光度法检测拟除虫菊酯类农药残留的快速检测方法。结果显示,猪肝羧酸酯酶水解底物后与固蓝B盐进行显色反应,在536 nm波长下,水解产物α-萘酚在0~6×10^(-4) mol·L^(-1)范围内与显色产物吸光度值成线性相关,R^(2)=0.9996;0.1μg·mL^(-1)联苯菊酯和甲氰菊酯即对猪肝羧酸酯酶有明显的抑制效果,吸光度值降低;操作简单,满足果蔬中拟除虫菊酯类农药快速检测的需求。

关键词：拟除虫菊酯类农药残留分光光度法快速检测蔬菜

基于Android的农药残留检测系统设计与实现

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自动化与信息工程 2018年第3期39卷 29-34页

作者：冉文清武悦俊刘科勇刘日威倪树标广东省测试分析研究所广东省化学危害应急检测技术重点实验室

针对人工判读大批量农药残留速测卡结果存在的误判率高、效率低等问题,基于Android平台,结合无线蓝牙和单片机技术,设计了以颜色传感器TCS230为核心的农药残留检测系统。以传统的农药残留速测法为基础,根据实验建立标准曲线,通过对TCS23... 详细信息

针对人工判读大批量农药残留速测卡结果存在的误判率高、效率低等问题,基于Android平台,结合无线蓝牙和单片机技术,设计了以颜色传感器TCS230为核心的农药残留检测系统。以传统的农药残留速测法为基础,根据实验建立标准曲线,通过对TCS230颜色识别的结果,在手机终端计算出相应的农药残留量,并利用APP实现数据的存储、查询和共享等扩展功能。实验结果表明:系统结构简单、操作方便,检测精度满足要求,系统已经得到实际应用。

关键词：农药残留颜色传感器蓝牙技术 Android 单片机

The numerical simulation of a new double swirl static mixer for gas reactants mixing

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Chinese Journal of Chemical Engineering 2020年第9期28卷 2438-2446页

作者： Zhuokai Zhuang Jingtian Yan Chenglang Sun Haiqiang Wang yuejun Wang Zhongbiao wu Key Laboratory of Environment Remediation and Ecological Health Ministry of EducationCollege of Environmental&Resources ScienceZhejiang UniversityHangzhou310058China Zhejiang Provincial Engineering Research Centre of Industrial Boiler&Furnace Flue Gas Pollution Control Hangzhou 310058China College of Control Science and Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Tianlan Environmental Protection Technology Co.Ltd Hangzhou 311202China

For the nitrogen oxide removal processes,high performance gas mixer is deeply needed for the injection of NH3 or *** this study,a new type of double swirl static mixer in gas mixing was investigated using computational fluid dynamics(CFD).The results obtained using Particle Image Velocimetry(PIV)correlated well with the results obtained from *** comparisons in pressure loss between the experimental results and the simulation results showed that the model was suitable and accurate for the simulation of the static *** process conditions and design were *** L/D equaled 4,coefficient of variation(COV)was<5%.The inlet velocity did not affect the distributions of turbulent kinetic *** terms of both COV and pressure loss,the inner connector is important in the design of the static *** nozzle length should be set at 4 *** both COV and pressure loss into consideration,the optimal oblique degree is *** averaged kinetic energy changed according to process conditions and *** new static mixer resulted in improved mixing performance in a more compact *** new static mixer is more energy efficient compared with other SV static ***,the double swirl static mixer is promising in gas mixing.

关键词： CFD PIV Gas mixing Double swirl static mixer Pressure loss

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镀铅工艺及其在轻量化铅酸电池中的应用

应用技术学报 2021年第3期21卷 203-214页

作者：刘晓东武玥君罗钰婷杨彤王振卫上海应用技术大学化学与环境工程学院上海201418

铅酸电池“轻量高能”要求发展表面镀铅的轻质金属代替铅板栅。轻金属表面镀铅/锡工艺可以采用氟硼酸、氨基磺酸、柠檬酸和甲基磺酸体系镀液。氟硼酸体系中残液中的氟化物难以处理到符合国家规定标准;氨基磺酸易生成硫酸铅沉淀,影响镀... 详细信息

铅酸电池“轻量高能”要求发展表面镀铅的轻质金属代替铅板栅。轻金属表面镀铅/锡工艺可以采用氟硼酸、氨基磺酸、柠檬酸和甲基磺酸体系镀液。氟硼酸体系中残液中的氟化物难以处理到符合国家规定标准;氨基磺酸易生成硫酸铅沉淀,影响镀液稳定性及镀层质量;柠檬酸体系镀液在高电流密度下对镀层铅含量的影响大;甲基磺酸体系能在高电流密度下工作,废水处理可靠。在轻金属铜、钛基体以及炭泡沫上电镀铅或铅锡合金,得到的轻型镀铅板栅材料在铅酸电池中轻量高能技术发展中具有重要地位。

关键词：铅酸电池轻量化镀铅工艺铅锡合金

Surface tidal currents in the open sea area to the east of the Zhoushan Islands measured with high frequency surface wave radar

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Acta Oceanologica Sinica 2013年第10期32卷 5-10页

作者： SHEN Zhiben wu Xiongbin FEI yuejun XU Xing'an CHEN Xiaofeng Radio Oceanography Laboratory School of Electronic InformationWuhan University Marine Forecast Center of East China Sea East China Sea BranchState Oceanic Administration

Based on the quasi-harmonic analysis of 11 d vector ocean currents obtained from two high frequency sur- face wave radars located at Zhujiajian Island and Shengshan Island, the spatial distribution characteristics of surface tidal currents in the open sea area to the east of the Zhoushan Islands of Zhejiang Province, China are studied. The following conclusions are drawn from the analysis： the tidal current pattern in the open sea area to the east of Zhoushan Islands is primarily regular semidiurnal, which is significantly affected by the shallow water constituents. The directions of the major axes of tidal current ellipses of M2 lie approx- imately in the NW-SE direction. With the increasing of distance away from the coast, the directions of the tidal current ellipses gradually shift toward the E-W direction. The tidal currents are mainly reversing cur- rents. The spatial distribution of probable maximum current velocities decreases gradually from northeast to southwest which is basically in accordance with the spatial distribution of measured maximum current velocities. The residual currents near the coast are larger than those far away from the coast. The directions of the residual currents are basically north by east, and the angle to the due north increases gradually with the increasing distance away from the coast. The topography shows a certain impact on the spatial distri- bution of shallow water constituents, the rotation of tidal currents, the probable maximum currents and the residual currents.

关键词： high frequency surface wave radar quasi-harmonic analysis Zhoushan Islands of Zhejiang Province of China spatial distribution characteristics surface tidal currents

CO_2激光喉显微手术在喉部病变治疗中的疗效观察

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中国中西医结合耳鼻咽喉科杂志 2015年第5期23卷 352-353,339页

作者：余成清梁灼萍吴跃军欧小毅覃纲四川省泸州医学院附属医院耳鼻咽喉头颈外科 646000

目的总结CO_2激光喉显微手术在喉部病变中应用的临床体会。方法全麻插管支撑喉镜下对1329例喉部病变患者在喉显微镜辅助下,用CO_2激光分别对病变组织切割、气化予以摘除。结果所有患者均一次切除病变,术后无1例出现呼吸困难、出血等并... 详细信息

目的总结CO_2激光喉显微手术在喉部病变中应用的临床体会。方法全麻插管支撑喉镜下对1329例喉部病变患者在喉显微镜辅助下,用CO_2激光分别对病变组织切割、气化予以摘除。结果所有患者均一次切除病变,术后无1例出现呼吸困难、出血等并发症。手术均成功进行,1329例效果满意。结论喉显微镜下CO_2激光手术是治疗喉部病变的有效方法,具有手术创伤小,痛苦小、反应轻、恢复快、复发率低,喉功能保留好等优点,值得临床推广应用。

关键词：喉部病变激光手术喉显微外科

维普期刊数据库博看期刊

成都市2015—2019年臭氧浓度夜间变化及成因分析

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中国环境监测 2024年第3期40卷 84-97页

作者：付虹冯程刘辉王文勇李迪刘岳军李琳伍少泽西南交通大学地球科学与环境工程学院四川成都610036 四川省成都生态环境监测中心站四川成都610066 四川省雅安生态环境监测中心站四川雅安625099

利用2015—2019年成都市每日逐时地面O_(3)监测资料和同期气象数据,通过模拟和计算区域水平、铅直流场和大气静力稳定度支配参数(Ri),对成都市夜间O_(3)浓度第二峰值的反常现象进行统计分析和原因追踪。研究结果表明:成都市2015—2019... 详细信息

利用2015—2019年成都市每日逐时地面O_(3)监测资料和同期气象数据,通过模拟和计算区域水平、铅直流场和大气静力稳定度支配参数(Ri),对成都市夜间O_(3)浓度第二峰值的反常现象进行统计分析和原因追踪。研究结果表明:成都市2015—2019年夜间O_(3)浓度第二峰值出现频率为17%,造成O_(3)浓度夜间反常现象的原因是雅安市山风将高空O_(3)输送至地面,而后平流至成都市,或本地高空湍流破坏夜间稳定层,将上层残留层储存的白天高浓度O_(3)送至近地面,加之夜晚绝大部分污染源停止排放,消耗O_(3)的物质大幅减少,造成地面O_(3)浓度的夜间反常变化。引起高空湍流的方式有2种:一是风向切变,且至少切变45°,风向切变角度越大,湍流强度越大,引起残留层向下增长的幅度越大;二是风速切变,且切变层风速要大于上、下层风速2 m/s,切变风速越大,湍流强度就越大,残留层向下增长的幅度就越大,低空急流是风速切变的极端表现。

关键词：臭氧高空湍流风向切变风速切变山风

Prototethyan orogenesis in southwest Yunnan and Southeast Asia

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Science China Earth Sciences 2022年第10期65卷 1921-1947页

作者： yuejun WANG Xianghong LU Xin QIAN Sainan wu Yuzhi ZHANG Yang WANG Guangdong Key Lab of Geodynamics and Geohazards School of Earth Sciences and EngineeringSun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China

The Prototethyan Ocean has been suggested as an Early Paleozoic Ocean developed at the Gondwana northern margin. However, its spatial pattern, subduction style and closure time in SW Yunnan and SE Asia still remain unknown. The Prototethyan evolution in SW Yunnan and SE Asia and its internal connection with the South China Kwangsian(Ordo-Silurian)intracontinental orogenesis are also poorly constrained. By summarizing and analyzing the Early Paleozoic geological records in the Sibumasu and Indochina blocks, the eastern South China and SW Japan, this paper proposes the existence of a giant OrdoSilurian igneous belt along the Gondwana northern margin. A preliminary limitation has been obtained regarding the source nature and migration pattern of the igneous belt. Our data allow us to propose a model of the Early Paleozoic Andean-type active continental margin along the East Gondwana northern margin. This is the foundation to determine the southward subduction of the southern branch of the eastern Prototethyan Ocean underneath the Sibumasu and Indochina blocks along the YunxianMenghai(SW Yunnan)-Thailand Peninsula and the Tam Ky-Phouc Son suture in Central Vietnam, respectively, and the eastward linkage with the Early Paleozoic Osaka subduction zone in SW Japan across the peripheral Sanya area. These data synthetically indicate an easterly-diachronous and propagating Andean-type Cambrian(Furongian)-Silurian(Llandovery) orogenesis along the Gondwana northern margin from Nepal, NW India, South Tibet, Qiangtang to Central Vietnam across South Indochina and Sibumasu. This paper reconstructs the Early Paleozoic locations of the Sibumasu and Indochina fragments, as well as SW Japan and South China continent in the Gondwana northern margin, and proposes the far-field effect on the South China Kwangsian intra-continental orogenesis from the subduction of the Early Paleozoic Prototethyan southern branch.

关键词： Igneous rocks Sedimentary sequence Early Paleozoic Prototethyan southern branch ocean Andean-type orogenesis SW Yunnan and SE Asia

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ATP荧光快速检测仪的研制

广东化工 2017年第16期44卷 207-209页

作者：倪树标何丽媛陈云刘科勇武悦俊中国广州分析测试中心广东省分析测试技术公共实验室广东广州510070

针对细菌总数快速检测的需求,利用ATP荧光检测技术,设计了一款细菌总数ATP荧光快速检测仪。通过设计一个恒温的检测暗室,有效降低了环境温度与环境光的干扰。采用光电倍增管作为光电转换器件,采用CPLD器件实现了光子计数脉冲信号的采集... 详细信息

针对细菌总数快速检测的需求,利用ATP荧光检测技术,设计了一款细菌总数ATP荧光快速检测仪。通过设计一个恒温的检测暗室,有效降低了环境温度与环境光的干扰。采用光电倍增管作为光电转换器件,采用CPLD器件实现了光子计数脉冲信号的采集,从而实现了微弱荧光的检测。采用蓝牙无线通讯技术实现了数据传输。ATP标准溶液检测实验结果表明,仪器的检测值与ATP浓度呈良好线性关系,相关系数达到0.9964。

关键词：细菌总数 ATP荧光 CPLD