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Aqueous-phase formation of N-containing secondary organic compounds affected by the ionic strength

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Journal of Environmental Sciences 2024年第4期138卷 88-101页

作者： Yuqi Gan Xiaohui Lu shaodong Chen Xinghua jiang Shanye Yang Xiewen Ma Mei Li Fan Yang Yewen Shi Xiaofei Wang Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Great Bay Area Southern University of Science and TechnologyShenzhen 518055China Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air PollutionJinan UniversityGuangzhouChina Environmental Monitoring Station of Pudong New District Shanghai 201200China Shanghai Municipal Center for Disease Control&Prevention Shanghai 200336China

The reaction of carbonyl-to-imine/hemiaminal conversion in the atmospheric aqueous phase is a critical pathway to produce the light-absorbing N-containing secondary organic compounds(SOC).The formation mechanism of these compounds has been wildly investigated in bulk solutions with a low ionic ***,the ionic strength in the aqueous phase of the polluted atmosphere may be *** is still unclear whether and to what extent the inorganic ions can affect the SOC *** we prepared the bulk solution with certain ionic strength,in which glyoxal and ammonium were mixed to mimic the aqueous-phase *** characterization by High-resolution Mass Spectrometry was performed to identify the N-containing products,and the light absorption of the mixtures was measured by ultraviolet-visible ***-nine N-containing compounds were identified and divided into four categories(N-heterocyclic chromophores,high-molecular-weight compounds with N-heterocycle,aliphatic imines/hemiaminals,and the unclassified).It was observed that the longer reaction time and higher ionic strength led to the formation of more N-heterocyclic chromophores and the increasing of the lightabsorbance of the *** added inorganic ions were proposed to make the aqueous phase somewhat viscous so that the molecules were prone to undergo consecutive and intramolecular reactions to form the *** general,this study revealed that the enhanced ionic strength and prolonged reaction time had the promotion effect on the lightabsorbing SOC *** implies that the aldehyde-derived aqueous-phase SOC would contribute more light-absorbing particulate matter in the industrial or populated area where inorganic ions are abundant.

关键词： Ionic strength Carbonyl-to-imine/hemiaminal Heterocyclic Brown carbon Mass spectrometry Aqueous-phase reaction

Gypenosides ameliorate morphine-induced immunosuppression with an increased proportion of thymic T lymphocyte subsets and are involved in the regulation of the cAMP-CREM/CREB-IL-2 pathway

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Genes & Diseases 2024年第3期11卷 120-123页

作者： Hui Wang Zhonghao Li Qisheng Wang Weixin Lin Ziting Zhou Xinru Mu Yongwei jiang Shengfeng Lu shaodong Chen Zhigang Lu jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor Nanjing University of Chinese MedicineNanjingJiangsu 210023China Key Laboratory of Acupuncture and Medicine Research of Ministry of Education Nanjing University of Chinese MedicineNanjingJiangsu 210023China College of Pharmacy Nanjing University of Chinese MedicineNanjingJiangsu 210023China School of Medicine Xiamen UniversityXiamenFujian 361102China

Opioid abuse can suppress the lymphatic system function,and produce severe immunosuppression that poses a significant risk of opportunistic infections such as methicillinresistant Staphylococcus aureus(MRSA)pneumonia.^(1,2)Gypenosides(Gps)are the most important immunomodulator components in the Chinese herbal medicine Gynostemma pentaphyllum.

关键词： herbal Gypenosides immunosuppression

FP cavity and FBG cascaded optical fiber temperature and pressure sensor

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Chinese Optics Letters 2019年第4期17卷 39-43页

作者： Hui Li Qingchao Zhao shaodong jiang Jiasheng Ni Chang Wang Laser Institute Qilu University of Technology (Shandong Academy of Sciences)

A fiber Bragg grating(FBG) and Fabry–Perot(FP) cavity cascaded fiber sensing system was manufactured for temperature and pressure sensing. Temperature sensing as high as 175°C was performed by an FBG for the linear variation of an FBG wavelength with temperature. After the temperature was sensed, the demodulation system can find the original FP cavity length and its pressure and cavity length correlation coefficient; thus, the ambient pressure would be calculated. The sensing pressure can be as high as 100 MPa with a repeatability of 1/10,000 and high stability. This kind of fiber sensor has been used in the Shengli Oil Field.

关键词： fiber Bragg grating Fabry-Perot sensing pressure

Short Cavity DFB Fiber Laser Based Vector Hydrophone for Low Frequency Signal Detection

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Photonic Sensors 2017年第4期7卷 325-328页

作者： Xiaolei ZHANG Faxiang ZHANG shaodong jiang Li MIN Ming LI Gangding PENG Jiasheng NI Chang WANG Shandong Key Laboratory of Optical Fiber Sensing & Techonology Laser Institute of Shandong Academy of ScienceChina Jinan 250014 China

A short cavity distributed feedback （DFB） fiber laser is used for low frequency acoustic signal detection. Three DFB fiber lasers with different central wavelengths are chained together to make three-element vector hydrophone with proper sensitivity enhancement design, which has extensive and significant applications to underwater acoustic monitoring for the national defense, oil, gas exploration, and so on. By wavelength-phase demodulation, the lasing wavelength changes under different frequency signals can be interpreted, and the sensitivity is tested about 33 d13 re pm/g. The frequency response range is rather fiat from 5 Hz to 300Hz.

关键词： Short cavity distributed feedback fiber laser vector hydrophone frequency response phase noise sensitivity

Predictive value of total cholesterol to high-density lipoprotein cholesterol ratio for chronic kidney disease among adult male and female in Northwest China

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Chronic Diseases and Translational Medicine 2024年第3期10卷 216-226页

作者： Yanli Liu Kang Lyu shaodong Liu Jinlong You Xue Wang Minzhen Wang Desheng Zhang Yana Bai Chun Yin Min jiang Shan Zheng School of Public Health Institute of Epidemiology and StatisticsLanzhou UniversityLanzhouGansuChina Workers'Hospital of Jinchuan Group Co.Ltd. JinchangGansuChina Wuwei People's Hospital WuweiGansuChina

Background: Studies have found that the ratio of total cholesterol to high-density lipoprotein cholesterol (TC/HDL-C) was associated with the development of chronic kidney disease (CKD). However, the relationship in different genders was rarely discussed. The aim of this study was to explore this relationship and assess its predictive power for both males and ***: Based on a prospective cohort platform in northwest China, 32,351 participants without CKD were collected in the baseline and followed up for approximately 5 years. Cox proportional hazard model and restricted cubic spline regression analysis were performed to investigate the association between TC, HDL-C, TC/HDL-C and CKD in adult female and male. The clinical application value of the indicators in predicting CKD was evaluated by the receiver operator characteristic ***: During a mean follow-up of 2.2 years, 484 males and 164 females developed CKD. After adjusted for relevant confounders, for every one standard deviation increase in TC, HDL-C and TC/HDL-C, the hazard ratios (HRs) and 95% confidence intervals (95% CIs) for CKD were 1.17 (1.05-1.31), 0.84 (0.71-0.99), and 1.15 (1.06-1.25) for males, 0.94 (0.78-1.13), 0.58 (0.35-0.95), and 1.19 (1.01-1.40) for females, respectively. The results also showed that TC, HDL-C, and TC/HDL-C were associated with CKD in a linear dose-response relationship. The TC/HDL-C had the largest area under the curve (AUC) compared to TC and HDL-C, and the AUC among the females was larger than that among ***: The TC/HDL-C was significantly associated with CKD in adult males and females and has better clinical value in predicting CKD than TC and HDL-C, especially in females.

关键词： chronic kidney disease gender Jinchang Cohort predictive value TC/HDL-C

High-sensitivity FBG microphone with static pressure equalization and optimized response

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Chinese Optics Letters 2019年第1期17卷 9-13页

作者： Faxiang Zhang Chang Wang Xiaolei Zhang shaodong jiang Jiasheng Ni Gangding Peng Shandong Key Laboratory of Optical Fiber Sensing Technologies Laser Institute Qilu University of Technology(Shandong Academy of Sciences) College of Precision Instrument and Opto-Electronics Engineering and Key Laboratory of Opto-Electronics Information and Technical Science Ministry of Education Tianjin University School of Electrical Engineering and Telecommunications The University of New South Wales

We present a high-sensitivity fiber Bragg grating(FBG)-based microphone with a flat response and static pressure equalization. A very high dynamic sensitivity of the microphone is achieved by a pressure sensing structure based on a carbon fiber diaphragm. Static pressure equalization is realized by a balance structure with a capillary glass tube. The resonances of the sensor are suppressed by air damping structures, and a broadened flat response is achieved. An acoustic-solid interaction model was used to analyze the response characteristics of the microphone. An experimental prototype was produced and tested, and the results are well consistent with the *** tested sensitivity was-10 d B re 1 pm/Pa from 10 Hz to 2.5 kHz with a fluctuation of less than ±1.5 *** with the phase-generated-carrier-based coherent detection scheme, the microphone can achieve a sound resolution of the milli-pascal level. The static pressure sensitivity is measured to be-0.27 pm/atm, which is 100 dB lower than the dynamic sensitivity.

关键词： FBG static pressure equalization optimized response

双功能单体改进二维共价有机框架材料的光催化析氢性能

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环境化学 2023年第8期42卷 2706-2713页

作者：孙清蒋绍冬牛红云蔡亚岐国科大杭州高等研究院环境学院杭州310024 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室北京100085

本研究报道了一种新的三组分合成策略,可以用来提高二维共价有机框架材料(covalent organic frameworks,COFs)的光催化析氢活性.4-氨基苯甲醛(4-aminobenzaldehyde,ABA)既含有氨基又含有醛基,可以作为连接单元和调节剂改变COFs的晶体结... 详细信息

本研究报道了一种新的三组分合成策略,可以用来提高二维共价有机框架材料(covalent organic frameworks,COFs)的光催化析氢活性.4-氨基苯甲醛(4-aminobenzaldehyde,ABA)既含有氨基又含有醛基,可以作为连接单元和调节剂改变COFs的晶体结构、提高其比表面积和改善晶型.光催化析氢实验表明,COFs骨架中ABA的共价整合,使三组分COFs的光催化析氢效率显著高于不含ABA的双组分COFs催化剂,其中Tp-ABAx-TAPB COF光催化析氢速率比Tp-TAPB提升了14.3倍.机理研究表明,ABA结构有效调节了材料的光学带隙大小,增强了COFs光生载流子的分离和迁移效率.

关键词：共价有机框架材料三组分 COFs 双功能单体光催化析氢

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IP报文应用层分类及其QoS的研究

微计算机信息 2008年第3期24卷 228-229,120页

作者：蒋少东刘玉杜欢华中科技大学电子与信息工程系武汉430074

随着网络流量日益剧增,网络QoS问题愈发重要,QoS要求网络设备能够根据报文业务类型进行区别处理,如保证语音、限制P2P等。为此,设计了高效宽适应性报文协议识别系统,分析报文的业务类型,在QoS处理中增加关于应用协议的匹配规则,可与通用... 详细信息

随着网络流量日益剧增,网络QoS问题愈发重要,QoS要求网络设备能够根据报文业务类型进行区别处理,如保证语音、限制P2P等。为此,设计了高效宽适应性报文协议识别系统,分析报文的业务类型,在QoS处理中增加关于应用协议的匹配规则,可与通用的QoS类-策略-动作机制相结合实现基于业务的QoS。并总结了协议识别常用方法和系统运行设计中的常见问题。

关键词：服务质量应用层类识别

高精度光纤温度压力传感器及其在生产井的应用

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激光与光电子学进展 2022年第17期59卷 118-123页

作者：杨斌赵庆超车传睿安百新张发祥孙伟王昕姜邵栋徐子文中国石油化工集团公司胜利油田分公司山东东营257000 齐鲁工业大学(山东省科学院)激光研究所山东济南250014

研制了一种基于光纤布拉格光栅(FBG)和非本征法布里-珀罗干涉仪(EFPI)的高精度井下长期在线温度压力监测系统。该系统通过EFPI的腔长变化监测压力,通过FBG的波长变化监测温度,同时实现对压力的温度补偿。标定结果表明,该系统的压力测量... 详细信息

研制了一种基于光纤布拉格光栅(FBG)和非本征法布里-珀罗干涉仪(EFPI)的高精度井下长期在线温度压力监测系统。该系统通过EFPI的腔长变化监测压力,通过FBG的波长变化监测温度,同时实现对压力的温度补偿。标定结果表明,该系统的压力测量范围为0.1~42 MPa,压力灵敏度为203.8 nm/MPa,精度为±0.05%F.S(F.S表示满量程),压力分辨率达到0.0007 MPa。将该系统在胜利油田桩西某生产井进行了工程示范,实时监测井下温度和压力5个月。结果表明,该系统能反映油井生产状态,实现重要参数的在线监测,对提高油气采收率具有重要指导意义。

关键词：光纤光学光纤布拉格光栅非本征法布里-珀罗干涉仪压力温度在线监测