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电子鼻结合气相色谱-离子迁移谱法鉴别不同干燥方式的膳食虾肉复合果蔬棒风味变化

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食品安全质量检测学报 2024年第9期15卷 187-196页

作者：程荣刘瑞玲吴伟杰陈慧芝房祥军陈杭君牛犇郜海燕浙江海洋大学食品与药学学院舟山316000 浙江省农业科学院食品科学研究所农业农村部果品采后处理重点实验室全省生鲜食品智慧物流与加工重点实验室中国轻工业果蔬保鲜与加工重点实验室杭州310000

目的探究真空冷冻干燥及热风干燥处理膳食虾肉复合果蔬棒的风味变化。方法采用电子鼻定性分析两种干燥方式下的复合果蔬棒的区别,并利结合气相色谱-离子迁移谱法(gaschromatography-ionmobility spectrometry, GC-IMS)定量分析两种干... 详细信息

目的探究真空冷冻干燥及热风干燥处理膳食虾肉复合果蔬棒的风味变化。方法采用电子鼻定性分析两种干燥方式下的复合果蔬棒的区别,并利结合气相色谱-离子迁移谱法(gaschromatography-ionmobility spectrometry, GC-IMS)定量分析两种干燥方式样品的区别。结果通过电子鼻数据结果分析新鲜样品与两种干燥方式获得的样品存在明显区别,GC-IMS结果检测得到62种挥发性风味物质。其中在经过热风干燥的膳食虾肉复合果蔬棒中正丁醇、苯甲醇、3-呋喃甲醇等醇类物质的含量比冷冻干燥的含量高;酯类中的戊酸丁酯、庚酸甲酯等热风干燥较冷冻干燥含量多,而部分酮类化合物在干燥过后的含量有所降低。结论经过冷冻干燥后的样品在保持原有样品的形态颜色等优于热风干燥,从电子鼻以及GC-IMS的结果获得热风干燥的愉快型风味物质含量增加,本研究结果可作为今后膳食虾肉复合果蔬棒以及类似相关的复合产品的深加工方式选择和开发提供理论依据。

关键词：膳食虾肉复合果蔬棒真空冷冻干燥热风干燥电子鼻气相色谱-离子迁移谱法挥发性风味物质

Precise calibration of cavity forward and reflected signals using low-level radio-frequency system

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Nuclear Science and Techniques 2022年第1期33卷 35-43页

作者： Jin-Ying Ma Feng Qiu Long-Bo Shi Zheng-Long Zhu Tian-Cai Jiang Zong-Heng Xue Ke-An Jin Qi Chen cheng-Ye Xu Xing-Hao Ding Zheng Gao Lie-peng Sun Gui-Rong Huang Yuan He Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Precise measurements of the cavity forward(Vf)and reflected signals(Vr)are essential for characterizing other key parameters such as the cavity detuning and forward *** practice,it is challenging to measure V_(f) and V_(r) precisely because of cross talk between the forward and reflected channels(e.g.,coupling between the cavity reflected and forward signals in a directional coupler with limited directivity).For DESY,a method based on the cavity differential equation was proposed to precisely calibrate the actual V_(f) and V_(r).In this study,we verified the validity and practicability of this approach for the Chinese ADS front-end demo superconducting linac(CAFe)facility at the Institute of Modern Physics and a compact energy recovery linac(cERL)test machine at *** the CAFe facility,we successfully calibrated the actual V_(f) signal using this *** result demonstrated that the directivity of directional couplers might seriously affect the accuracy of V_(f) *** the cERL facility,we calibrated the Lorentz force detuning(LFD)using the actual *** study confirmed that the precise calibration of V_(f) significantly improves the accuracy of the cavity LFD measurement.

关键词： Forward and reflected signals Measurement Calibration

Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range

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Rare Metals 2022年第12期41卷 4065-4074页

作者： Jin-Yan Lin Shuai Chen Jia-Yang Li Dian Yu Xiang-Ling Xu Chuang Yu Shao-Qing Chen Xue-Fei Miao Lin-Feng peng Chao-Chao Wei Chong-Xuan Liu Shi-Jie cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Materials Huazhong University of Science and TechnologyWuhan 430074China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

All-solid-state Li-Se battery shows great potential as a candidate for next-generation energy storage devices due to its high energy density and ***,the low ionic conductivity of the solid electrolytes and large volume changes of Se active materials are two of the major issues that limit its ***,a simple solid-state reaction method is applied to synthesize chlorine-rich argyrodite Li_(5.5)PS_(4.5)CI_(1.5)electrolyte with high conductivity of 6.25 mS·cm^(-1)at room *** nanotube(CNT)is introduced as the host for Se to obtain Se/CNT composite with both enhanced electronic conductivity and lower volume expansion during the electrochemical reaction ***-solid-state Li-Se battery using Li_(5.5)PS_(4.5)CI_(1.5)as solid electrolyte combined with Se/CNT cathode and Li-In anode shows a discharge capacity of 866 mAh·g-1for the 2nd cycle under0.433 mA·cm-2at room ***,the assembled battery delivers a high discharge capacity of1026 mAh·g^(-1)for the 2nd cycle when cycled at the same current density at 60℃and maintains a discharge capacity of 380 mAh·g^(-1)after 150 *** to the high Li-ion conductivity of Li_(5.5)PS_(4.5)CI_(1.5)electrolyte,the assembled battery displays a high discharge capacity of 344 mAh·g^(-1)under 0.113 mA·cm^(-2)at-20℃C and remains 66.1%after200 *** addition,this all-solid-state Li-Se battery shows ultralong cycling performances up to 1000 cycles under 0.433 mA·cm^(-2)at-20℃.This work offers the design clue to fabricate the all-solid-state Li-Se battery workable at different operating temperatures with an ultralong cycling life.

关键词： Lithium argyrodite Chlorine-rich All-solidstate Li-Se batteries Operating temperatures Long cycling performances

Virucidal activity of MICRO-CHEM PLUS against African swine fever virus

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Journal of Integrative Agriculture 2023年第11期22卷 3560-3563页

作者： JIANG cheng-gang SUN Ying ZHANG Fan AI Xin LU Ming QIN Jia-lin ZHANG Xian-feng WANG Jing-fei BU zhi-gao ZHAO Dong-ming HE Xi-jun State Key Laboratory for Animal Disease Control and Prevention Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069P.R.China National High Containment Laboratory for Animal Diseases Control and Prevention Harbin 150069P.R.China

African swine fever(ASF) was first discovered and reported in East Africa in 1921 and it has been listed as a notifiable animal disease by the World Organization for Animal Health(WOAH) due to the high morbidity and mortality(WOAH 2019). African swine fever virus(ASFV) can persist in pig farm environments, carcasses, and various pig products(Petrini et al. 2019). ASF has caused significant economic losses to the pig industry since its outbreak in China in 2018(Zhao et al. 2019).

关键词： swine fever listed

基于“互联网+”模式下乳腺癌术后患者康复管理

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中国当代医药 2024年第23期31卷 169-172页

作者：彭雪梅黄诚万萍余腾骅徐卫英邵娟李晓梅廖佳江西省肿瘤医院乳腺外科江西南昌330029

目的针对“互联网+”康复护理方法在乳腺癌术后患者康复管理中的作用进行分析。方法选取2022年1月至2023年1月江西省肿瘤医院收治的100例乳腺癌患者作为研究对象,按照随机数字表法分为观察组和对照组,每组各50例。对照组采用常规护理方... 详细信息

目的针对“互联网+”康复护理方法在乳腺癌术后患者康复管理中的作用进行分析。方法选取2022年1月至2023年1月江西省肿瘤医院收治的100例乳腺癌患者作为研究对象,按照随机数字表法分为观察组和对照组,每组各50例。对照组采用常规护理方法,观察组采用“互联网+”康复护理方法。比较两组患者的上肢功能(前屈、后伸、外展)恢复情况、生活质量(物质生活、躯体功能、心理功能、社会功能)和护理满意度。结果观察组上肢功能恢复情况优于对照组,差异有统计学意义(P<0.05);护理后两组患者的生活质量高于本组护理前,且观察组的生活质量优于对照组,差异有统计学意义(P<0.05);观察组护理总满意度高于对照组,差异有统计学意义(P<0.05)。结论乳腺癌术后患者康复管理过程中采用基于“互联网+”康复护理可以提升患者康复效果,可有效促进患者肢体功能恢复,提高患者生活质量,提升患者护理满意度,临床中可推广使用。

关键词： “互联网+” 乳腺癌康复管理生活质量

A Potential Anti-cancer Compound Separated from the Chloroform Extract of the Chinese Medicine Formula Shenqi San

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Current Medical Science 2020年第1期40卷 138-144页

作者： Lu SHI Yi-jun TU Si-qi YE Yu XIA Chao-zhi MA Xiao-zhi peng Yan-wen LIU Zhong-zhu AI peng-tao YOU Department of Pharmacy Medical CollegeJianghan UniversityWuhan 430056China Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine Hubei University of Chinese MedicineWuhan 430065China Department of Dermatology The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510220China

This study examined anti-cancer compounds present in the chloroform extract of the Chinese medicine formula Shenqi San(CE-SS).Silica gel column chromatography,Sephadex LH-20,octadecylsilyl(ODS)column chromatography,and high performance liquid chromatography(HPLC)were used to separate the compounds from *** structural formulas of the separated compounds were determined using ID1H and 13C experiments as well as high resolution electrospray ionization mass spectroscopy(HRESIMS).The corresponding results were compared with the reported literature data.A total of six compounds were separated and their structures were identified on the basis of corresponding spectroscopic and physico-chemical *** were Saikogenin F(Ⅰ),Prosaikogenin D(Ⅱ),Prosaikogenin F(Ⅲ),p-sitosterol(Ⅳ),3β,16β,23-trihydroxy-13,28-epoxyurs-11-ene-3-O-β-D-glucopyranoside(V),and methyl ursolic acid(VI).The separated compounds were evaluated in vitro for their inhibitory ability against the proliferation of A549 cells via MTT *** was investigated using Annexin V-FITC/propidium iodide(PI)by flow ***-associated proteins were examined by Western *** the compounds were observed to have inhibitory activities against the proliferation of A549 cells to different *** cytometry showed that compound V increased the proportion of apoptotic A549 cells in a dose-dependent *** blotting showed that compound V increased the expression of Bax,cleaved-caspase-3,cleaved-caspase-9 and cleaved-poly ADP-ribose polymerase(PARP),and decreased the expression of *** results indicated that compound V featured a significant inhibitory effect on A549 cells when compared with other compounds,and it may be considered a potential drug against cancers.

关键词： Shenqi San separation identification A549 apoptosis

Reinforcement learning-based scheduling of multi-battery energy storage system

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Journal of Systems Engineering and Electronics 2023年第1期34卷 117-128页

作者： cheng Guangran DONG Lu YUAN Xin SUN Changyin School of Automation Southeast UniversityNanjing 210096China peng cheng Laboratory Shenzhen 518066China School of Cyber Science and Engineering Southeast UniversityNanjing 211189China

In this paper, a reinforcement learning-based multibattery energy storage system(MBESS) scheduling policy is proposed to minimize the consumers ’ electricity cost. The MBESS scheduling problem is modeled as a Markov decision process(MDP) with unknown transition probability. However, the optimal value function is time-dependent and difficult to obtain because of the periodicity of the electricity price and residential load. Therefore, a series of time-independent action-value functions are proposed to describe every period of a day. To approximate every action-value function, a corresponding critic network is established, which is cascaded with other critic networks according to the time sequence. Then, the continuous management strategy is obtained from the related action network. Moreover, a two-stage learning protocol including offline and online learning stages is provided for detailed implementation in real-time battery management. Numerical experimental examples are given to demonstrate the effectiveness of the developed algorithm.

关键词： multi-battery energy storage system(MBESS) reinforcement learning periodic value iteration data-driven

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采掘工作面地质信息数字孪生技术

煤田地质与勘探 2022年第11期50卷 174-186页

作者：李鹏程建远西安科技大学地质与环境学院陕西西安710054 中煤科工西安研究院(集团)有限公司陕西西安710077

矿井地质透明化是智能化煤矿建设的基础,三维地质建模是实现矿井地质透明的重要手段,以往采掘工作面地质建模存在插值算法不符合地质规律、多源异构地质数据融合程度低,以及煤矿生产装备与地质信息耦合少等问题。提出煤矿采掘工作面地... 详细信息

矿井地质透明化是智能化煤矿建设的基础,三维地质建模是实现矿井地质透明的重要手段,以往采掘工作面地质建模存在插值算法不符合地质规律、多源异构地质数据融合程度低,以及煤矿生产装备与地质信息耦合少等问题。提出煤矿采掘工作面地质信息数字孪生的概念,采用离散光滑插值(Discrete Smooth Interpolation,DSI)算法,利用钻探数据及地震构造解释数据地质建模,建立DSI平行相似约束后迭代计算得到的地质综合模型。开发了三维地质建模软件,实现了点(地质点)、线(地质界线、地层界线)、面(三维地质界面)、体(封闭地质体)4种地质对象的构建,在体对象基础上开发了立方网功能,基于区域统计学算法对体对象内的空间数据进行属性插值。使用建模软件构建掘进、回采工作面数字孪生的地质模型载体,接入微震监测系统、电阻率监测系统、随掘地震监测系统、随采地震监测系统实时监测数据,实现工作面地质信息数字孪生,反映采掘扰动下的地质变化;为煤矿掘进生产提供基于地质模型的场景仿真和掘进规划巷道断面曲线下发,指导掘进机自主掘进,提供掘进前方地质异常距离预警,保障掘进地质安全;为回采工作面提供基于地质模型的场景仿真和规划截割曲线,指导采煤机自主规划截割,提供回采前方地质异常构造位置、应力集中区位置距离预警,提高回采工作的安全性。该技术在内蒙古鄂尔多斯唐家会煤矿进行了应用,为安全、高效采掘工作提供地质保障。

关键词：回采工作面掘进工作面地质透明化三维地质建模信息数字孪生

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GC法测定右雷佐生中有机溶剂的残留量

广州化工 2024年第2期52卷 181-183页

作者：彭飞城杨跃龙李昌亮李帅刘雁鸣兰文易必新湖南省药品检验检测研究院湖南长沙410001 国家药品监督管理局药用辅料工程技术研究重点实验室湖南长沙410001 湖南省药品审核查验中心湖南长沙410001 怀化市检验检测中心湖南怀化418000

建立右雷佐生原料药中3种有机溶剂的残留量的测定方法。采用毛细管气相色谱法,FID检测器,氮气为载气,DB-FFAP色谱柱(60 m×0.53 mm×1μm),程序升温,进样口温度为220℃,FID检测器温度为280℃,载气流速7.5 mL/min,对甲醇、乙醇、乙酸乙... 详细信息

建立右雷佐生原料药中3种有机溶剂的残留量的测定方法。采用毛细管气相色谱法,FID检测器,氮气为载气,DB-FFAP色谱柱(60 m×0.53 mm×1μm),程序升温,进样口温度为220℃,FID检测器温度为280℃,载气流速7.5 mL/min,对甲醇、乙醇、乙酸乙酯的残留量进行检测。甲醇、乙醇、乙酸乙酯的检测限分别为0.31、0.60、0.44μg/mL;各成分在考察的浓度范围内有良好的线性关系;平均回收率为101.6%~101.8%,RSD为1.02%(n=6)。该法适用于右雷佐生原料药中这3种有机溶剂残留量的同时测定,专属性强,灵敏度高,结果可靠。

关键词：气相色谱法右雷佐生有机溶剂残留