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Visible and Near-Infrared Spectroscopic Discriminant Analysis Applied to Identification of Soy Sauce Adulteration

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American Journal of Analytical Chemistry 2022年第2期13卷 51-62页

作者： Chunli Fu Jiemei Chen lifang fang Tao Pan Department of Biological Engineering Jinan University Guangzhou China Guangdong Langtao Science and Technology Co. Ltd. Dongguan China Department of Optoelectronic Engineering Jinan University Guangzhou China

The identification of soy sauce adulteration can avoid fraud, and protect the rights and interests of producers and consumers. Based on two measurement models (1 mm, 10 mm), the visible and near-infrared (Vis-NIR) spectroscopy combined with standard normal variate-partial least squares-discriminant analysis (SNV-PLS-DA) was used to establish the discriminant analysis models for adulterated and brewed soy sauces. Chubang soy sauce was selected as an identification brand (negative, 70). The adulteration samples (positive, 72) were prepared by mixing Chubang soy sauce and blended soy sauce with different adulteration rates. Among them, the “blended soy sauce” sample was concocted of salt water (NaCl), monosodium glutamate (C5H10NNaO5) and caramel color (C6H8O3). The rigorous calibration-prediction-validation sample design was adopted. For the case of 1 mm, five waveband models (visible, short-NIR, long-NIR, whole NIR and whole scanning regions) were established respectively;in the case of 10 mm, three waveband models (visible, short-NIR and visible-short-NIR regions) for unsaturated absorption were also established respectively. In independent validation, the models of all wavebands in the cases of 1 mm and 10 mm have achieved good discrimination effects. For the case of 1 mm, the visible model achieved the optimal validation effect, the validation recognition-accuracy rate (RARV) was 99.6%;while in the case of 10 mm, both the visible and visible-short-NIR models achieved the optimal validation effect (RARV = 100%). The detection method does not require reagents and is fast and simple, which is easy to promote the application. The results can provide valuable reference for designing small dedicated spectrometers with different measurement modals and different spectral regions.

关键词： Visible and Near-Infrared Spectroscopy Soy Sauce Adulteration Identification Partial Least Squares-Discriminant Analysis Standard Normal Variate

Subcellular Proteomes of the Cyanobacterium Synechocystis *** PCC 6803-A Tool to Study Stress Responses of Cyanbacterial Cells

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Subcellular Proteomes of the Cyanobacterium Synechocystis **...

Freezing-directed construction of enzyme/nano interfaces:Reagentless conjugation,superior activity,and better stability

第二届全国植物蛋白质组学学术研讨会

作者： lifang Zhang fang Huang~* Photosynthesis Research Center,Institute of Botany Chinese Academy of Sciences,Beijing 100093,China

Cyanobacteria are by far the largest group of photosynthetic prokaryotic organisms as judged by their widespread occurrence,frequent abundance and morphological *** cyanobacterium is also interesting from the evolutio...

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Chinese Chemical Letters 2024年第1期35卷 471-474页

作者： Ke Quan Jiajie Tong lifang Chen Shuyao fang Mengjiao Li Linlin Wu Zhihe Qing Hunan Provincial Key Laboratory of Cytochemistry School of Food and BioengineeringSchool of Chemistry and Chemical EngineeringChangsha University of Science and TechnologyChangsha 410114China Department of Oncology Tengzhou Central People’s Hospital Affiliated Xuzhou Medical UniversityTengzhou 277500China

Immobilizing enzyme to nano interfaces has demonstrated to be a favorable strategy for prompting the industrialized application of *** tremendous endeavor has been devoted to using gold nanoparticles(AuNPs)as conjugation matrix due to its fascinating physico-chemical properties,maintaining enzymatic activity while circumventing cumbersome modification remains a formidable ***,the freezing-directed conjugation of enzyme/nano interfaces was constructed without extra *** the proof of concept,glucose oxidase(GOx)was chosen as model *** one-pot conjugation process can be facilely completed at−20°C under aqueous ***,with the loading of GOx on AuNP at freezing,the enzyme exhibited superior catalytic activity and stability upon thermal and pH *** mechanism of boosted activity was then discussed in *** was found that higher loading density under freezing condition and more enzyme tending to bind AuNPs via Au-S bond were the main factors for the superior *** importantly,this methodology was universal and can also be applied to other enzyme which contains natural cysteine,such as horseradish peroxidase(HRP)and *** facile conjugation strategy accompanied by remarkable bioactivity expand the possibilities for enzymatic biosensing,microdevice and even drug delivery.

关键词： Enzyme conjugation Freezing AuNPs Catalytic activity

Bilateral globus pallidus internus-deep brain stimulation in a 5-year-old boy with SGCE-related myoclonus dystonia syndrome

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Pediatric Investigation 2024年第2期8卷 154-156页

作者： Xiaojuan Tian Changhong Ding Ming Liu lifang Dai Zixing Xie Tie fang Department of Neurology Neurological CenterBeijing Children’s HospitalCapital Medical UniversityNational Center For Children’s HealthBeijingChina Department of Functional Neurosurgery Neurological CenterBeijing Children’s HospitalCapital Medical UniversityNational Center For Children’s HealthBeijingChina

To the editor:Myoclonus-dystonia syndrome(MDS)(OMIM15990)is a heritable disorder characterized by early onset subcortical myoclonic jerks and/or less prominent *** leads to disability and is often refractory to medical treatment.1 Deep brain stimulation(DBS)for the treatment of refractory MDS has been proven effective in adults for reducing both myoclonic jerks and dystonia.1,2,3 Here,we describe the application of bilateral globus pallidus internus(GPi)DBS in a 5-year-old boy diagnosed with MDS.

关键词： globus editor Deep

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介质阻挡放电中新型超四边形斑图的研究

中国科学：物理学、力学、天文学 2017年第3期47卷 85-90页

作者：杜天董丽芳郝芳冯建宇刘莹河北大学物理科学与技术学院保定071002

在高氩气含量的混合气体放电中,首次观察到大小点不完全插空的新型超四边形斑图.采用高速相机(ICCD)和光电倍增管(PMT),对此斑图的时空动力学进行了研究.结果表明,斑图由三套不同的子结构相互嵌套构成,每半个电压周期内子结构的放电顺序... 详细信息

在高氩气含量的混合气体放电中,首次观察到大小点不完全插空的新型超四边形斑图.采用高速相机(ICCD)和光电倍增管(PMT),对此斑图的时空动力学进行了研究.结果表明,斑图由三套不同的子结构相互嵌套构成,每半个电压周期内子结构的放电顺序为:小点-大点晕-大点中心点.并且在每半个电压周期的下降沿,中心点的放电对应着两个明显的电流脉冲,放电时刻具有选择性.经分析可知:由于中心点在下降沿放电的时刻具有选择性,中和掉大点晕的壁电荷量不同,导致不同的中心点周围电场强度不均,因此每个小点不在4个大点结构的中心"插空放电".

关键词：介质阻挡放电超四边形斑图时空动力学壁电荷插空放电

食管癌患者放疗前预置胃管行肠内营养支持的护理

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中西医结合护理（中英文） 2018年第8期4卷 29-31页

作者：汪黎芳方伟虹浙江省肿瘤医院胸部放疗科浙江杭州310022

目的观察食管癌患者放疗前预置胃管行肠内营养支持的效果,总结护理措施。方法 2017年3月—8月60例食管癌患者放疗前预置胃管行肠内营养支持,并给予针对性护理干预,监测营养指标的变化,评价预防性留置胃管行肠内营养支持的效果。结果患... 详细信息

目的观察食管癌患者放疗前预置胃管行肠内营养支持的效果,总结护理措施。方法 2017年3月—8月60例食管癌患者放疗前预置胃管行肠内营养支持,并给予针对性护理干预,监测营养指标的变化,评价预防性留置胃管行肠内营养支持的效果。结果患者均顺利完成放疗。与放疗开始时相比,放疗结束时患者体质量(W)、血红蛋白(HB)、白蛋白(ALB)指标无明显变化(P>0. 05)。结论食管癌患者放疗前预置胃管行肠内营养支持期间,通过实施针对性护理干预措施,能够提高患者治疗期间生存质量,确保放疗顺利开展。

关键词：食管癌放疗胃管肠内营养心理护理

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抗战前十年的中国矿冶工程学会

自然辩证法通讯 2018年第4期40卷 74-80页

作者：雷丽芳方一兵潜伟北京科技大学科技史与文化遗产研究院北京100083 中国科学院自然科学史研究所北京100190

从1927年南京国民政府建立至1937年抗日战争全面爆发,这一时期国内政局相对较为稳定,中国近代工业得到了暂时相对宽松与自由的发展环境,但近代工业化中能源与材料基础产业——矿冶业在这一时期的发展却不尽如人意。本文从矿冶专门工程... 详细信息

从1927年南京国民政府建立至1937年抗日战争全面爆发,这一时期国内政局相对较为稳定,中国近代工业得到了暂时相对宽松与自由的发展环境,但近代工业化中能源与材料基础产业——矿冶业在这一时期的发展却不尽如人意。本文从矿冶专门工程学术团体——中国矿冶工程学会入手,通过挖掘相关史料,探讨该时期中国矿冶工程学会在矿业法与矿冶业发展、矿冶科学技术知识传播、矿冶科研学术等方面所做的努力,并指出受当时矿冶事业发展曲折以及政府支持力度不足的双重约束,中国矿冶工程学会所能发挥的作用与原始预期存在一定偏差。

关键词：中国矿冶工程学会矿业法矿冶知识传播矿冶科研

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环境微生物学课程教学探索

高师理科学刊 2016年第7期36卷 101-103页

作者：王洋洋李方方河南大学环境与规划学院河南开封475000

结合环境微生物学教学特点及河南大学的实际情况,对教学内容、教学方法、实验课程设计及安排等方面进行了改革和探索,为环境微生物学教学改革提供了建议和具体实施方法.

关键词：环境微生物学教学改革实验教学

抗阻运动对乳腺癌术后患者上肢淋巴水肿和肌肉力量影响的系统评价

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护理学杂志 2018年第9期33卷 97-101页

作者：李呈孟爱凤程芳智晓旭杜世正邾萍羊丽芳潘梦婷方红南京中医药大学护理学院江苏南京210009 江苏省肿瘤医院

目的系统评价抗阻运动对乳腺癌术后患者上肢淋巴水肿及肌肉力量的干预效果。方法计算机检索Cochrane Library、PubMed等英文数据库及CNKI、万方等中文数据库,关于乳腺癌腋窝淋巴结清扫术后患者抗阻运动的随机对照试验(RCT),检索时间自... 详细信息

目的系统评价抗阻运动对乳腺癌术后患者上肢淋巴水肿及肌肉力量的干预效果。方法计算机检索Cochrane Library、PubMed等英文数据库及CNKI、万方等中文数据库,关于乳腺癌腋窝淋巴结清扫术后患者抗阻运动的随机对照试验(RCT),检索时间自建库至2017年5月。按照Cochrane系统评价方法,由2名评价者单独进行文献筛选,纳入最终文献后进行质量评价、信息提取,采用RevMan5.3对数据进行分析。结果最终纳入12个RCT研究,共1 461例患者。7个研究针对无上肢淋巴水肿患者,5个研究针对并发上肢淋巴水肿患者。患者进行抗阻运动安全,不会增加或加剧淋巴水肿症状。Meta分析显示,抗阻运动可改善患者腿部推举力、仰卧推举力和胸部推举力(均P<0.01)。结论乳腺癌腋窝淋巴结清扫术后患者可进行抗阻运动,能增强患者的肌肉力量,但对预防或改善上肢淋巴水肿的效果需规范测量方法和诊断标准进一步研究。

关键词：乳腺癌腋窝淋巴结清扫术淋巴水肿抗阻运动肌肉力量随机对照试验系统评价