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茉莉净油、桂花净油等10种天然香料中15种邻苯二甲酸酯的检测研究

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香料香精化妆品 2015年第4期 25-29页

作者：林葵黄和明韦英亮刘培杰肖筠李婷广西壮族自治区分析测试研究中心广西南宁530022 广西产品质量监督检验研究院广西南宁530004 桂林拓普香料有限公司广西桂林541004

为对香料进行风险评估或制定相关标准提供依据,按国家标准方法,采用气质联用仪测定了茉莉净油、桂花净油等10种天然香料57批产品中15种邻苯二甲酸酯含量,检出限均为0.05 mg/kg。结果显示：有1批杭白菊油的邻苯二甲酸二异丁酯（DIBP）检... 详细信息

为对香料进行风险评估或制定相关标准提供依据,按国家标准方法,采用气质联用仪测定了茉莉净油、桂花净油等10种天然香料57批产品中15种邻苯二甲酸酯含量,检出限均为0.05 mg/kg。结果显示：有1批杭白菊油的邻苯二甲酸二异丁酯（DIBP）检出量达856 mg/kg,4批小花茉莉净油的邻苯二甲酸二丁酯（DBP）检出量呈较高的117.9、335.0、48.0和607.0mg/kg,共有8批产品检出总量超过60 mg/kg（1批杭白菊油,7批小花茉莉净油）;其他产品的单项塑化剂含量均为未检出或在1.0~44.1 mg/kg之间,邻苯二甲酸酯类物质总质量比含量未超过60 mg/kg。此外分析了产品中邻苯二甲酸酯污染来源。

关键词：天然香料邻苯二甲酸酯塑化剂气质联用分析

日本以农协为主推进智慧农业发展经验及对中国的启示

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农业工程学报 2024年第8期40卷 299-310页

作者：胡鹤鸣王应宽李明芋生憲司海津裕古桥贤一张洪铎冈本凉佑黄金其东京大学农学生命科学研究科东京113-8657 农业农村部规划设计研究院中国农业工程学会北京100125 湖南省农业科学院农业装备研究所长沙410125 日本久保田公司东京104-0031 湖南省丘陵山地动力平台工程技术研究中心长沙410125 丘陵山区农机装备多功能动力平台湖南省工程研究中心长沙410125

日本农业面临严峻的农业人口老龄化与农业人口减少的问题,且以小型田块和山地耕地居多,农业劳作不便。为了解决上述问题,保障粮食供应,振兴地方经济,日本正大力发展智慧农业。日本农协协助制定了新的农业基本法以及农林水产信息化战略... 详细信息

日本农业面临严峻的农业人口老龄化与农业人口减少的问题,且以小型田块和山地耕地居多,农业劳作不便。为了解决上述问题,保障粮食供应,振兴地方经济,日本正大力发展智慧农业。日本农协协助制定了新的农业基本法以及农林水产信息化战略以支持农业的发展,并在农业机械自动化、农用信息系统、农村网络改造、农用航空、植物工厂等方面开展了大量的科技创新与应用,推动了日本现代农业的发展,日本以140.4万人且主体为老龄人口的核心农户实现了近1.3亿人口的主要粮食自给自足。日本农协多层级、多部门、全方位覆盖农业流程的服务,为智慧农业的落地助力。纵观日本智慧农业的发展历程与成效,借鉴其成功经验,对中国农业发展提出如下建议:应当创新农业体制机制,打通信息、人力、资源的流通渠道;优化农村营商环境,发挥好地方、高校、企业等不同主体的优势,立足乡村振兴角度对智慧农业技术进行长期的实证化研究;借鉴日本农协在农业生产、销售、推广、管理上的经验,因地制宜,积极探索,夯实根基,有助于推进中国乡村全面振兴,加快农业农村现代化和建设智慧农业强国。

关键词：智慧农业农业强国信息化农协人口老龄化乡村振兴日本

Cost-effective method for degradability identification of MSW using convolutional neural network for on-site composting

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International Journal of Agricultural and Biological Engineering 2021年第4期14卷 233-237页

作者： Jingjing huang Sihui Dai heming Hu Hongduo Zhang Jingxin Xie Ming Li Hunan Agricultural University Changsha 410128China Hunan Agricultural Equipment Research Institute Changsha 410125China Graduate School of Agricultural and Life Sciences the University of TokyoTokyo 113-0033Japan

Automatically identifying the degradability of municipal solid waste(MSW)is one of the key prerequisites for on-site composting to prevent contaminations from undegradable *** this study,a cost-effective method was proposed for the degradability identification of ***,the trainable images in the datasets were increased by performing four different sizes of cropping operations on the original images captured ***,a lite convolutional neural network(CNN)model was built with only 3.37 million parameters,and then a total of eight models were trained on these datasets with and without the image augmentation operations,***,a degradability identification system was built for on-site composting,where the images were cut to different sizes of small squares for prediction,and the experiments were conducted to find the best combinations of the trained models and the cutting *** results showed that the validation accuracies of the models trained with the augmentation operations were 0.91-2.07 percentage points higher,and in the evaluation of the degradability identification system the best result was achieved by the combination of W8A dataset and cutting size of 1/14 reached an accuracy of 91.58%,which indicated the capability of this cost-effective method to identify the degradability of MSW.

关键词： municipal solid waste degradability identification cost-effective CNN on-site composting image classification

BET抑制剂(+)-JQ1通过调节NF-KB信号通路保护小鼠急性肝衰竭实验研究

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实用肝脏病杂志 2020年第6期23卷 781-784页

作者：黄鹤鸣刘彦君付荣石催催范建高张元元罗成李光明上海交通大学医学院附属新华医院消化内科上海市200092 中国科学院上海药物研究所药物研发与设计中心

目的探讨溴结构域和额外末端结构域(BET)抑制剂(+)-JQ1对脂多糖/D-氨基半乳糖(LPS/D-Gal)诱导的小鼠急性肝衰竭(ALF)的保护作用及其作用机制。方法将47只C57BL/6小鼠随机分为对照组(n=15)、模型组(n=17)和(+)-JQ1干预组(n=15),采用腹腔... 详细信息

目的探讨溴结构域和额外末端结构域(BET)抑制剂(+)-JQ1对脂多糖/D-氨基半乳糖(LPS/D-Gal)诱导的小鼠急性肝衰竭(ALF)的保护作用及其作用机制。方法将47只C57BL/6小鼠随机分为对照组(n=15)、模型组(n=17)和(+)-JQ1干预组(n=15),采用腹腔注射LPS/D-Gal联合诱导ALF模型,其中在干预组造模前2 h腹腔注射(+)-JQ1。在造模4 h后每组处死5只小鼠,其余小鼠继续喂养至72 h,观察存活率。采用ELISA法检测血清TNF-α,采用RT-qPCR法和Western bloting法分别检测mRNA和蛋白表达。结果模型组72 h小鼠存活率为16.7%(2/12),(+)-JQ1干预组为60.0%(6/10,P>0.05);ALF组血清ALT水平为(2779.0±200.6)U/L,显著高于对照组[(44.9±2.5)U/L,P<0.05],血清AST水平为(2885.0±143.6)U/L,显著高于对照组[(76.0±5.7)U/L,P<0.05],而(+)-JQ1干预组血清ALT和AST水平较模型组显著降低[分别为(948.7±46.3)U/L和(1704.0±42.1)U/L,P<0.05];ALF组肝组织TNF-αmRNA水平为(103.7±23.0),显著高于对照组[(1.2±0.2),P<0.05],IL-6 mRNA水平为(73.4±15.8),显著高于对照组[(1.1±0.1),P<0.05],IL-1B mRNA水平为(13.5±2.7),显著高于对照组[(1.0±0.1),P<0.05],而经(+)-JQ1干预后,三种细胞因子mRNA水平均较模型组显著降低[分别为(12.8±1.2)、(11.7±0.7)和(1.5±0.3),P<0.05];ALF组血清TNF-α水平(631.6±57.5)U/L,显著高于对照组[(2.5±0.5)U/L,P<0.05],而(+)-JQ1干预组血清TNF-α水平为(139.8±8.1)U/L,显著低于ALF组(P<0.05);ALF组肝组织P65和IKB蛋白表达显著增强,而(+)-JQ1干预后显著减弱。结论(+)-JQ1对ALI小鼠肝脏具有保护作用,可能通过调节NF-KB信号通路下调促炎细胞因子的表达,从而减轻肝组织炎症反应。

关键词：急性肝损伤 (+)-JQ1 细胞因子 NF-KB信号通路小鼠

Particle Swarm Optimized Adaptive Dynamic Surface Control for PMSM Servo System

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Particle Swarm Optimized Adaptive Dynamic Surface Control fo...

第36届中国控制会议

作者： Ziyin Chen Zhe Lin Gang huang heming Jia Chunyu Yue Beijing Institute of Space Mechanics & Electricity College of Mechanical and Electrical Engineering Northeast Forestry University

ISBN: (纸本)9781538629185

To solve the control problem of permanent magnet synchronous motor（PMSM） for servo system in the present of parameter uncertainties,we design an adaptive backstepping controller with dynamic surface method,the derivatives of virtual control variables can be approximated through a first-order filter,which can avoid the needs for repeated computing the derivatives of virtual control in backstepping design,meanwhile some nonlinear coupled terms are reserved instead of using directly nonlinear cancellation in feedback linearization,which can further simplify the resulted *** adaptation laws are designed through Lyapunov stability analysis with guaranteed uniformly ultimately bounded convergence for close-loop *** swarm optimization（PSO） algorithm is adopted to determine the optimal parameters for the controller by minimizing the objective ***,the simulation results are presented to prove the effectiveness and robustness of the proposed controller.

关键词： permanent magnet synchronous motor(PMSM) backstepping dynamic surface control(DSC) adaptive control particle swarm optimization(PSO)

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用于正弦波频率估计的修正I-Rife算法

数据采集与处理 2024年第2期39卷 471-480页

作者：王哲文许晖易辉跃黄浩杨柳邓鹤鸣张武雄顾豪爽胡永明湖北大学微电子学院武汉430062 中国科学院上海微系统与信息技术研究所上海200050 中科水研(江西)科技股份有限公司南昌330006

对正弦波信号的频率估计是雷达领域常见的问题。当真实频率接近量化频点时,I-Rife算法的频移因子的计算会产生较大误差,为提高频率估计的精度,本文通过分析Rife及I-Rife算法的性能及误差产生的原因,利用频谱细化的方法,提出了一种修正I-... 详细信息

对正弦波信号的频率估计是雷达领域常见的问题。当真实频率接近量化频点时,I-Rife算法的频移因子的计算会产生较大误差,为提高频率估计的精度,本文通过分析Rife及I-Rife算法的性能及误差产生的原因,利用频谱细化的方法,提出了一种修正I-Rife算法,即用峰值频点左右各0.5点处的频谱幅值来替代频谱峰值点的幅值和次大值频点处的幅值进行插值计算,对频率偏移值进行更为准确的估计,在计算量与I-Rife算法几乎相同的情况下,有效地提高了频率的估计精度。仿真结果表明,改进后的I-Rife算法整体性能优于I-Rife算法,且估计的均方根误差更接近于克拉美-罗下界。

关键词： Rife算法频率估计频谱细化快速傅里叶变换克拉美-罗下界

不同种植密度与施肥方式对红花标记抗虫杂交棉鲁05H9产量和品质的影响

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山东农业科学 2014年第2期46卷 62-64页

作者：李秋芝杨中旭王士红李海涛李彤尹会会黄鹤鸣聊城市农业科学研究院山东聊城252000

对红花标记杂交棉鲁05H9的不同种植密度、施肥方式进行大田小区试验,结果表明,在鲁西区域土质粘壤土、肥力中等条件下,鲁05H9种植密度3.6万株/hm2且缓控释肥用量750 kg/hm2时能够获得最高纯收益;缓控释肥与常规施肥处理籽棉、皮棉产量... 详细信息

对红花标记杂交棉鲁05H9的不同种植密度、施肥方式进行大田小区试验,结果表明,在鲁西区域土质粘壤土、肥力中等条件下,鲁05H9种植密度3.6万株/hm2且缓控释肥用量750 kg/hm2时能够获得最高纯收益;缓控释肥与常规施肥处理籽棉、皮棉产量均差异不显著,纤维品质有所提高,这符合棉花简化栽培的要求。

关键词：抗虫杂交棉鲁05H9 种植密度施肥方式 Lu 05 H9

Method for C/N ratio estimation using Mask R-CNN and a depth camera for organic fraction of municipal solid wastes

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International Journal of Agricultural and Biological Engineering 2021年第5期14卷 222-229页

作者： Jingjing huang Hongduo Zhang Xu Xiao Jingqi huang Jingxin Xie Liang Zhang heming Hu Sihui Dai Ming Li Yongwei Xu College of Mechanical and Electrical Engineering Hunan Agricultural UniversityChangsha 410128China Graduate School of Agricultural and Life Sciences the University of TokyoTokyo 113-0033Japan Hunan Agricultural Equipment Research Institute Changsha 410125China College of Horticulture Hunan Agricultural UniversityChangsha 410128China Center for Spatial Information Science University of TokyoKashiwa 277-8568Japan

Fast assessment of the initial carbon to nitrogen ratio(C/N)of organic fraction of municipal solid waste(OFMSW)is an important prerequisite for automatic composting control to improve efficiency and stability of the bioconversion *** this study,a novel approach was proposed to estimate the C/N of OFMSW,where an instance segmentation model was applied to predict the masks for the waste ***,by combining the instance segmentation model with the depth-camera-based volume calculation algorithm,the volumes occupied by each type of waste were obtained,therefore the C/N could be estimated based on the properties of each type of ***,an instance segmentation dataset including three common classes of OFMSW was built to train mask region-based convolutional neural networks(Mask R-CNN)***,a volume measurement algorithm was proposed,where the measurement result of the object was derived by accumulating the volumes of small rectangular cuboids whose bottom area was calculated with the projection *** the calculated volume was corrected with linear regression *** results showed that the trained instance segmentation model performed well with average precision scores AP_(50)=82.9,AP_(75)=72.5,and mask intersection over unit(Mask IoU)=45.1.A high correlation was found between the estimated C/N and the ground truth with a coefficient of determination R2=0.97 and root mean square error RMSE=*** relative average error was 0.42%and the maximum error was only 1.71%,which indicated this approach has potential for practical applications.

关键词： carbon to nitrogen ratio estimation volume measurement organic fraction of municipal solid waste depth camera instance segmentation

A New Species of the Genus Protobothrops(Squamata:Viperidae:Crotalinae) from the Dabie Mountains,Anhui,China

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Asian Herpetological Research 2012年第3期3卷 213-218页

作者： Xin huang Tao PAN Demin HAN Liang ZHANG Yinxu HOU Lei YU heming ZHENG Baowei ZHANG School of Life Sciences Anhui University South China Institute of Endangered Animals Anhui Center for Desease Control and Prevention Anhui Bird Watching Society Jianghuai School Anhui University

During a biological survey in July 2011, a pit viper was collected from the Yaoluoping Nature Reserve in the Dabie Mountains, Anhui, China. The pit viper’s the total length measured 836 mm with a dorsal ground color of yellowbrown, decorated by 56 dark-brown transverse bands. The 4thsupralabial squama of the new species is separated from subocular by two squamae, and the tip of tail is orange; this combination of characters distinguish it from other species of the genus Protobothrops. Based on the body proportions, number of squamae, body color pattern, and comparing the data of its life history with those of other species of Protobothrops, we herein describe it as a new species, belonging to the genus of Protobothrops.

关键词： taxonomy Protobothrops dabieshanensis sp.nov. snake Yaoluoping Nature Reserve Anhui