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基于机器视觉的食品瓶罐包装缺陷检测研究进展

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粮油食品科技 2024年第4期32卷 185-191页

作者：陈卫东刘超王莹范冰冰河南工业大学信息科学与工程学院河南郑州450001 粮食储运国家工程研究中心河南郑州450001

根据近年文献资料,介绍了机器视觉技术在食品瓶罐包装缺陷检测上的应用和发展,概述瓶罐包装缺陷检测系统的硬件结构和检测流程;梳理并分析基于图像处理技术和基于深度学习方法在食品瓶罐包装缺陷检测领域取得的研究成果,探讨分类网络模... 详细信息

根据近年文献资料,介绍了机器视觉技术在食品瓶罐包装缺陷检测上的应用和发展,概述瓶罐包装缺陷检测系统的硬件结构和检测流程;梳理并分析基于图像处理技术和基于深度学习方法在食品瓶罐包装缺陷检测领域取得的研究成果,探讨分类网络模型和目标检测网络模型两种技术在该领域的优势和不足,并对未来的发展进行了展望,为智能瓶罐包装检测的创新和发展提供参考。

关键词：机器视觉包装缺陷检测图像处理深度学习

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新乡贤乡村治理参与成效的组态分析

价值工程 2024年第4期43卷 4-6页

作者：臧明月陈为东安徽财经大学管理科学与工程学院蚌埠233030

通过模糊集定性比较(fsQCA)和案例分析,对浙江省2021年度“最美浙江人·最美乡贤”的15个新乡贤案例进行编码与分析,构建了新乡贤“参与成效”的五个条件变量。研究得到参与成效的3种类型:政府协同在场新乡贤发掘村庄资源型、在场新乡... 详细信息

通过模糊集定性比较(fsQCA)和案例分析,对浙江省2021年度“最美浙江人·最美乡贤”的15个新乡贤案例进行编码与分析,构建了新乡贤“参与成效”的五个条件变量。研究得到参与成效的3种类型:政府协同在场新乡贤发掘村庄资源型、在场新乡贤社会动员公众参与型、在场新乡贤参与成效理想型。

关键词：新乡贤乡村治理模糊集定性比较案例分析

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Three Sclerotinia species as the cause of white mold on pea in Chongqing and Sichuan of China

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Journal of Integrative Agriculture 2021年第11期20卷 2957-2965页

作者： DENG dong SUN Su-li DU chen-zhang XIANG Chao LONG Jue-chen chen wei-dong ZHU Zhen-dong Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Chongqing Academy of Agricultural Sciences Chongqing 402160P.R.China Crop Research Institute Sichuan Academy of Agricultural SciencesChengdu 610066P.R.China United States Department of Agriculture-Agricultural Research Service Washington State UniversityPullmanWA 99164USA

White mold of pea caused by Sclerotinia sclerotiorum is a common disease in ***,we discovered that the diverse Sclerotinia species could cause white mold on pea plants in Chongqing and Sichuan of China during recent disease ***,the objective of this study was to confirm the causal agents from diseased pea *** obtained isolates of white mold from Chongqing and Sichuan were identified by morphological characters and molecular characterization to determine the pathogen species,and their pathogenicity was confirmed on pea through completing Koch’s *** isolates of Sclerotinia-like were obtained from diseased plants or *** on morphological characteristics and molecular characterization,30 isolates were identified to three species,six isolates as ***,seven as ***,and 17 as *** pathogenicity tests on pea cultivars Zhongwan 4 and Longwan 1,all 30 isolates caused typical symptoms of white mold on the inoculated plants,and the inoculated pathogens were re-isolated from the diseased *** study confirmed that white mold of pea was caused by three Sclerotinia species,***,*** and *** in Chongqing and *** is the first report that *** and *** cause white mold of pea in Southwest China.

关键词： Pisum sativum white mold Sclerotinia sclerotiorum Sclerotinia minor Sclerotinia trifoliorum

Low temperature laser absorption spectra of methane in the near-infrared at 1.65 μm for lower state energy determination

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Chinese Physics B 2012年第1期21卷 260-267页

作者： Gao wei chen wei-dong Zhang wei-Jun Yuan Yi-Qian Gao Xiao-Ming Key Laboratory of Atmospheric Composition and Optical Radiation Chinese Academy of SciencesHefei 230031China Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei 230031China Laboratoire de Physicochimie de l'Atmosphère Universitédu Littoral Côte d'Opale189AAv.Maurice Schumann59140 DunkerqueFrance

Direct absorption spectra of the 2v3 band of methane （CH4） from 6038 to 6050 cm 1 were studied at different low temperatures using a newly developed cryogenic cell in combination with a distributed feedback （DFB） diode laser. The cryogenic cell can operate at any stabilized temperature ranging from room temperature down to 100 K with temperature fluctuation less than =t=1 K within 1 hour. In the present work, the CH4 spectra in the range of 6038-6050 cm-1 were recorded at 296, 266, 248, 223, 198, and 176 K. The lower state energy Ett and the rotational assignment of the angular momentum J were determined by a ＂2-low-temperature spectra method＂ using the spectra recorded at 198 and 176 K. The results were compared with the data from the GOSAT and the recently reported results from Campargue and co-workers using two spectra measured at room temperature and 81 K. We demonstrated that the use of a 2-low-temperature spectra method permits one to complete the Ett and J values missed in the previous studies.

关键词： methane laser absorption spectroscopy cryogenic cell low temperature absorption spec-trum

Property Prediction Using Hierarchical Regression Model Based on Calibration

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Journal of Iron and Steel Research International 2010年第8期17卷 30-35页

作者： TAN Shuai chen wei-dong WANG Fu-li CHANG Yu-qing School of Information Science and Engineering Northeastern UniversityShenyang 110004LiaoningChina Baosteel Industry Inspection Co Shanghai 201900 China)

Redundant information and inaccurate model will greatly affect the precision of quality prediction.A multiphase orthogonal signal correction modeling and hierarchical statistical analysis strategy are developed for the improvement of process understanding and quality *** orthogonal signal correction is used to remove the structured noise in both X and Y,which does not contribute to prediction *** corresponding loading vectors provide good interpretation of the covariant part in X and *** to background,hierarchical PLS（Hi-PLS）is used to build regression model of process variables and property *** blocking leads to two model levels：the lower level shows the relationship of variables in each annealing furnace using hierarchical PLS based on bidirectional orthogonal signal correction,and the upper level reflects the relationship of annealing *** analysis of continuous annealing line data,the production precisions of hardness and elongation are improved by comparison of previous *** demonstrates the efficiency of the proposed algorithm for better process understanding X and property interpretation Y.

关键词： continuous annealing line property prediction hierarchical PLS orthogonal signal correction

On the scaling law of ramp structures in scalar turbulence

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Atmospheric and Oceanic Science Letters 2018年第4期11卷 372-377页

作者： chen dong-wei HU Fei XU Jing-Jing State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences College of Earth Science University of Chinese Academy of Sciences

Ramp structures widely exist in scalar turbulence,such as temperature,water vapor,and carbon dioxide(CO2),which refer to the phenomenon that the physical quantity increases slowly with time and then suddenly *** structures lead to large gradients on a small scale and result in intermittency and anisotropy of turbulent *** this paper,wavelet analysis is used to analyze observed data from the beijing 325-m meteorological tower to extract ramp structures in temperature,water vapor,and CO2 *** structures in CO2 signals are different from those in temperature and water vapor in terms of the averaged temporal scale and normalized amplitude,and the ramp duration almost equals the cliff duration,which means ramp structures in CO2 signals are not easy to generate and different physical mechanisms may *** addition,both the ascending and descending part of ramp structures are linearly *** is found that a scaling law exists between the slope and duration in the ascending part in the three scalar *** corresponding power exponents are slightly ***,the same rule exists in the descending part of ramp structures,which indicates that self-similarity may be a universal law in scalar ***,the maxima of selected ramp structures show the same pattern,*** are ramp structures in the maximum sequence,which proves that small-scale ramp structures are superimposed on large-scale ramp structures.

关键词： Scalar turbulence ramp structure scaling law selfsimilarity

Review on the effects of the traditional Chinese medicine on cytochrome P450

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中国药理学与毒理学杂志 2016年第10期30卷 1044-1045页

作者： WANG Yan-yan chen wei-dong School of Pharmacy Anhui University of Chinese Medicine Anhui Academy of Chinese Medicine

The cytochrome P450 superfamily,one of the most important drug-metabolizing enzyme systems in humans,is responsible for the metabolism of numerous xenobiotic substances as well as endogenous *** or inhibition of the cytochrome P450 enzymes,after exposure to different drugs and chemicals,is directly linked to a number of drug-induced toxicity and drug interactions leading to treatment *** we know,the traditional Chinese medicine(TCM)has complicated components and is always coadministered with other *** searching and summing up the literatures about the effects of TCM on cytochrome P450 at home andabroad,the results show that the activity of cytochrome P450 was inhibited or induced by some single herbs,traditional Chinese prescriptions andthe active components of the TCM,such as the flavonoids,flavonoid derivatives,alkaloids,saponins,terpenoids,anthraquinones and lignans,and so on,which therefore might slow or speed metabolism of other *** paper tips that much attention should be paid to the research fields of TCM on cytochrome P450,which is meaningful to clinical reasonable medicine treatment and new drug development.

关键词： TCM cytochrome P450 drug-drug interaction

Prognostic value of high-sensitivity cardiac troponin T in patients with en-domyocardial-biopsy proven cardiac amyloidosis

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Journal of Geriatric Cardiology 2014年第2期11卷 136-140页

作者： Geng QIAN chen WU Yang ZHANG Yun-Dai chen wei dong Yi-Hong REN Department of Cardiology Chinese PLA General Hospital 28 Fuxing Road Beijing 100853 China

Objective To investigate prognostic predictors of long-term survival of patients with cardiac amyloidosis （CA）, and to determine predictive value of high-sensitivity cardiac troponin T （hs-cTnT） in CA patients. Methods We recruited 102 consecutive CA cases and followed these patients for 5 years. We described their clinical characteristics at presentation and used a new, high-sensitivity assay to determine the concentration of cTnT in plasma samples from these patients. Results The patients with poor prognosis showed older age （56 ±12 years vs. 50 ±15 years, P=0.022）, higher incidences of heart failure （36.92%vs. 16.22%, P=0.041）, pericardial effusion （60.00%vs. 35.14%, P=0.023）, greater thickness of interventricular septum （IVS）（15 ±4 mm vs. 13 ±4 mm, P=0.034）, higher level of hs-cTnT （0.186 ±0.249 ng/mL vs. 0.044 ±0.055 ng/mL, P=0.001） and higher NT-proBNP （N-terminal pro-B-type natriuretic pep-tide） levels （11,742 ± 10,464 pg/mL vs. 6,031 ± 7,458 pg/mL, P=0.006）. At multivariate Cox regression analysis, heart failure （HR：1.78, 95%CI：1.09-2.92, P=0.021）, greater wall thickness of IVS （HR：1.44, 95%CI：1.04-3.01, P=0.0375） and higher hs-cTnT level （HR：6.16, 95%CI：2.20-17.24, P=0.001） at enrollment emerged as independent predictors of all-cause mortality. Conclusions We showed that hs-cTnT is associated with a very ominous prognosis, and it is also the strongest predictor of all-cause mortality in multivariate analysis. Examination of hs-cTnT concentrations provides valuable prognostic information concerning long-term outcomes.

关键词： Cardiac amyloidosis Long-term survival Troponin T

Hydroxylation of 3-nitrotyrosine by hydroxyl radical

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Chinese Chemical Letters 2007年第5期18卷 542-544页

作者： Jun chen dong wei Qun Shi Yu Fen Zhao Yan Mei Li Key Laboratory of Bioorganic Phosphorous Chemistry ＆ Chemical Biology （Ministry of Education） Department of Chemistry Tsinghua University Beijing 100084 China

Hydroxylation of 3-nitrotyrosine （3-NT） and 3-NT containing peptide Gly-nitroTyr-Gly in aqueous solution by hydroxyl radical were investigated with gamma irradiation. The structures of the hydroxylated products were confirmed by electrospray ionization mass spectrometry and ^1H NMR spectrometry. The reactivity of 3-nitrotyrosine has been investigated using density functional theory （DFT） calculation.

关键词： 3-Nitrotyrosine Hydroxyl radical DFT Selective hydroxylation