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Rice seeds identification based on back propagation neural network model

International Journal of Agricultural and Biological Engineering 2019年第6期12卷 122-128页

作者： Xuebin Feng peijun he Huaxi Zhang Wenqing Yin Yan Qian Peng Cao Fei Hu College of Engineering Nanjing Agricultural UniversityNanjing 210031China

Rice quality directly affects the final rice yield.In order to achieve rapid,non-destructive testing of rice seeds,this paper combines the three-dimensional laser scanning technology and back propagation(BP)neural network algorithm to build a rice seeds identification platform.The information on rice seed surface is collected from four angles and processed using Geomagic Studio software.Based on the noise filtering,smoothing of the point cloud,vulnerability repair,and downsampling,the three-dimensional(3D)morphological characteristics of a rice seed surface,and the projection features of the main plane cross-section are obtained through the calculation of the features.The experiments were performed on five rice varieties,including Da Hua aromatic glutinous,Hong ShiⅠ,Tian You VIII,Xin Dao X,and Yu Jing VI.The resulting input vector consisted respectively of:(1)nine 3D morphological surface features,(2)nine projection features of the main cross-section plane of rice,and(3)all of the above features.The results showed that for an input vector consisting of nine surface 3D morphological features,the recognition rate of the five rice varieties was 95%,96%,87%,93%,and 89%,respectively;for an input vector consisting of nine projection features of the main cross-section plane of rice seeds,the recognition rate was 96%,96%,90%,92%,and 89%,respectively;and lastly,for an input vector consisting of all the features,the highest recognition rate of 96%,97%,91%,94%,and 90%,respectively,was achieved.The analysis showed that rice varieties could be identified by using 3D laser scanning.Therefore,the proposed method can improve the accuracy of rice varieties identification.

关键词： rice seeds identification BP neural network three-dimensional laser scanning features point cloud

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电子商务与乡村经济韧性——基于“电子商务进农村综合示范”政策的经验证据

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中南财经政法大学学报 2023年第1期 97-108页

作者：何珮珺谭词中南财经政法大学财政税务学院湖北武汉430073 对外经济贸易大学国际经济贸易学院北京100029

在外部不利因素频发和内部新旧动能转换的双重冲击背景下,提升乡村经济韧性已成为实施乡村振兴战略的重要着力点。基于“电子商务进农村综合示范”政策,利用2010-2019年县域数据,本文采用多期双重差分法检验“电子商务进农村综合示范”... 详细信息

在外部不利因素频发和内部新旧动能转换的双重冲击背景下,提升乡村经济韧性已成为实施乡村振兴战略的重要着力点。基于“电子商务进农村综合示范”政策,利用2010-2019年县域数据,本文采用多期双重差分法检验“电子商务进农村综合示范”政策的实施对乡村经济韧性的影响。结果发现,示范县政策的实施可以显著提升乡村经济韧性,该结论经过平行趋势检验、安慰剂检验和替换变量等一系列稳健性检验后依然成立。机制检验结果表明,示范县政策通过促进产业集聚和扩大农产品市场需求的方式提升乡村经济韧性。异质性分析结果表明,示范县政策在贫困地区和人力资本水平较高地区的实施效果更为显著。本文丰富了电子商务与乡村经济韧性的相关研究,为乡村经济韧性建设提供了理论参考。

关键词：农村电商乡村经济韧性乡村振兴

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A case report of chylous ascites after cardiac surgery

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Emergency and Critical Care Medicine 2024年第1期4卷 42-45页

作者： Shuaishuai Yuan Pailing Xie Xiantao Liu peijun Li The University of Hong Kong-Shenzhen Hospital Cardiovascular Medicine Center Cardiac Intensive Care Unit ShenzhenGuangdongChina.

Background:Chylous ascites(CA),an emulsion rich in triglycerides,is a rare type of ascites,especially after cardiac surgery.Also,there are few reports of the occurrence of CA after mitral valve replacement,aortic valve replacement,tricuspid valvuloplasty,and coronary artery bypass grafting.Case presentation:We report the case of a 53-year-old man who underwent surgery for a diagnosis of mitral incompetence,aortic incompetence,tricuspid incompetence,and coronary atherosclerotic heart disease.Fifteen days after surgery,3000 mL of milky-yellow ascites appeared in the abdominal cavity,diagnosed as CA by laboratory examination.The ascites gradually disappeared after being drained,and the patients improved.The curative was objective,but the exact cause is not clear.Conclusion:Although CA is rare,it may occur during the surgical intervention in cardiac surgery.

关键词： Cardiac intensive care unit Cardiac valve replacement Case report Chylous ascites Coronary artery bypass graft Department of cardiac surgery

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NaCl对腌制兔肉食用品质的影响

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食品工业科技 2022年第15期43卷 115-122页

作者：何琪董怡邓莎向燕何培君何强四川大学轻工科学与工程学院四川成都610065

本文分别以质量分数0%、3%、6%、9%、12%、15%的NaCl将兔肉腌制处理48 h后,探讨不同添加量的NaCl对腌制兔肉加工品质和脂质氧化的影响。结果显示,随着NaCl添加量增加,腌制后兔肉pH、蒸煮损失率、亮度值(L^(*))、红度值(a^(*))、黄度值(b... 详细信息

本文分别以质量分数0%、3%、6%、9%、12%、15%的NaCl将兔肉腌制处理48 h后,探讨不同添加量的NaCl对腌制兔肉加工品质和脂质氧化的影响。结果显示,随着NaCl添加量增加,腌制后兔肉pH、蒸煮损失率、亮度值(L^(*))、红度值(a^(*))、黄度值(b^(*))均有所降低,而兔肉的硬度、内聚性、胶着性和咀嚼性依次升高,弹性呈现先增大后降低的趋势,在3%的NaCl添加量时兔肉弹性最大。NaCl对兔肉中脂质氧化也有较大的影响,兔肉过氧化值(POV)和硫代巴比妥酸反应物值(TBARS)都随着NaCl添加量的增大呈现上升的趋势,且在添加量为9%达到最大值,之后随着添加量增大会略微降低;兔肉在腌制后脂肪酸营养价值会有所降低,其中饱和脂肪酸(SFA)含量总体上升,多不饱和脂肪酸(PUFA)含量降低,而单不饱和脂肪酸(MUFA)含量变化不大,n-6/n-3比值和PUFA/SFA比值下降。总体而言,NaCl的适量添加(0%~6%)会改善兔肉质构特性,增强保水能力,但会加速脂质氧化。

关键词：兔肉腌制食用品质脂质氧化 NaCl 添加量

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有机融合与双向升级:区块链技术下的个人信息保护研究

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广西社会科学 2023年第9期 138-148页

作者：何沛军郭志远安徽大学法学院安徽合肥230601 华东政法大学上海201620

区块链技术与个人信息保护具有天然冲突,亟须从技术与规范层面加以调和。区块链技术下的个人信息主要存在于注册数据中,区块数据中的个人信息界定存在困难。区块链下的个人信息权需要进行重塑,可从个人信息更正权和删除权的新涵义、被... 详细信息

区块链技术与个人信息保护具有天然冲突,亟须从技术与规范层面加以调和。区块链技术下的个人信息主要存在于注册数据中,区块数据中的个人信息界定存在困难。区块链下的个人信息权需要进行重塑,可从个人信息更正权和删除权的新涵义、被遗忘权的全面确立以及可携带权的新形式三个方面展开。为促进区块链与个人信息保护的融合,可从技术和规范角度双向升级,确立私权保护的共同理念,以可编辑、可删除区块链的模型设计促进区块链技术迭代,采取“合理可能”标准区分个人信息与技术数据,以“相对删除”对个人信息删除进行规范解释,以链外存储与目的解释相结合实现技法平衡。

关键词：区块链个人信息保护删除权哈希算法私权保护个人信息权

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Factors contributing to the oxygen concentration over the Qinghai-Tibetan Plateau and its contribution rate calculation

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Science China Earth Sciences 2024年第2期67卷 497-509页

作者： peijun SHI Ying ZHANG Yanqiang CheN Wenquan ZHU Xiaokang HU heyi YANG Lu JIANG Yonggui MA Haiping TANG State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing100875China Key Laboratory of Environmental Change and Natural Disaster Ministry of EducationBeijing Normal UniversityBeijing100875China The Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610065China Academy of Plateau Science and Sustainability People’s Government of Qinghai Province&Beijing Normal UniversityXining810016China

A decline in atmospheric oxygen concentration is projected in the 21st century given the background of global warming.The Qinghai-Tibetan Plateau is located at a high altitude,and thus,it faces a hypoxia challenge;however,knowledge of the factors contributing to its atmospheric oxygen concentration is still lacking.here,we conducted joint observations of ecosystem oxygen production and carbon sinks and near-surface atmospheric oxygen concentrations on the Qinghai-Tibetan Plateau and meteorological elements at Beijing Fangshan Station.Using seasonal differences and statistical methods,we calculated the relative contribution rates of vegetation to changes in atmospheric oxygen concentration.Our results indicate that solar radiation,atmospheric humidity,and ecosystem oxygen consumption and production have a significant impact on the atmospheric oxygen concentration,and the impact shows temporal and spatial differences.Vegetation significantly impacts the oxygen concentration,with a contribution rate of 16.7%–24.5%,which is underestimated in existing research.Our findings provide important insights into the factors that influence atmospheric oxygen concentration and highlight the contribution of vegetation.To better understand the oxygen dynamics of the Qinghai-Tibetan Plateau,we recommend further field observations of soil respiration and vegetation photosynthesis to clarify the contributions of carbon storage,carbon sinks and other factors to the near-surface atmospheric oxygen concentration.

关键词： Qinghai-Tibetan Plateau Oxygen concentration Relative contribution rate Air temperature Vegetation

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Microbiota in colorectal cancer related to liver metastasis

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Chinese Journal of Cancer Research 2024年第1期36卷 17-24页

作者： peijun Wei Weiming Han Zitong Zhang Xue Tian Chen Yang Qiaoxuan Wang Weihao Xie Ying Liu Yuanhong Gao Hui Chang Department of Radiation Oncology State Key Laboratory of Oncology in South ChinaGuangzhou 510060China Guangdong Provincial Clinical Research Center for Cancer Guangzhou 510060China Sun Yat-sen University Cancer Center Guangzhou 510060China Department of Pediatric Oncology State Key Laboratory of Oncology in South ChinaGuangzhou 510060China

The prevalence of colorectal cancer(CRC) is increasing annually and metastasis is the principal cause of death in patients with CRC, with the liver being the most frequently affected site. Many studies have shown a strong interplay between the gut flora, particularly Fusobacterium nucleatum(F. nucleatum), Escherichia coli, and Bacteroides fragilis, and the development of gut tumors. Some strains can induce gut inflammation and produce toxins that directly harm gut epithelial cells, ultimately accelerating the onset and progression of CRC. However,little clinical evidence exists on the specific interplay between the gut microflora and colorectal cancer liver metastasis(CRLM). Some research showed the existence of viable F. nucleatum in distant metastasis of CRC.Subsequently, gut microbiota products, such as lipopolysaccharides, sodium butyrate, and protein cathepsin K, were also found to affect the development of CRC. This article summarizes the mechanism and research status of the interplay between gut microflora and CRLM, discusses the importance of gut microflora in the treatment of CRLM, and proposes a new approach to understanding the mechanism of CRLM and potential treatments for the microbiome. It is anticipated that the gut microbiota will be a formidable therapeutic and prophylactic tool for treating and preventing CRLM.

关键词： Gut microbiota liver metastasis colorectal cancer

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Probiotics administration alleviates cognitive impairment and circadian rhythm disturbance induced by sleep deprivation

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Food Science and Human Wellness 2024年第4期13卷 1951-1961页

作者： peijun Tian Yunfei Hou Zheng Wang Jiaona Jiang Xin Qian Zhihao Qu Jianxin Zhao Gang Wang Wei Chen State Key Laboratory of Food Science and Resources Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Institute of Food Biotechnology(Yangzhou) Jiangnan UniversityYangzhou 225004China

Gut microbiome is indispensable for maintaining normal brain function.Specifically,gut microbiota plays a causal role in sleep deprivation(SD)-induced cognitive impairment.In this study,neurobehavioral effects of the Bifidobacterium breve strain(CCFM1025)were assessed in sleep-deprived mice.CCFM1025 improved the body weight and food and water intake of the mice.It also alleviated SD-induced cognitive behavioural abnormalities(in the novel object recognition test),but did not show beneficial effects on mood-and spatial memory-related behaviours.CCFM1025 significantly altered the gut microbial composition and genome function.Key microbial metabolites that may regulate sleep function were also identified,such as isovaleric acid andγ-aminobutyric acid in the gut and purine metabolites in the serum.Those metabolites may participate in gutbrain communication by acting on the striatal melatonin system,for example to increase melatonin levels,and by regulating the expression of circadian clock genes such as those encoding the adenosine A2A receptor and period circadian regulator 1.Collectively,administration of probiotics alleviated cognitive impairment and circadian rhythm disturbance induced by SD via modulation of gut microbiome and its metabolites.These findings may help guide the treatment of insomnia or other sleep disorders via dietary strategies.

关键词： Bifidobacterium Sleep Circadian rhythm Purine Gut microbiome

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Paleogene transgression process and environmental evolution in the deepwater area of the Baiyun Depression in the northern South China Sea

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Acta Oceanologica Sinica 2024年第4期43卷 15-24页

作者： peijun Qiao Yuchi Cui Qiong Ma Qiang Yu Lei Shao State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China CNOOC Energy Technology&Services-Drilling&Production Co. CNOOC Central Laboratory Shenzhen BranchGuangdong 516000China

Multiple borehole samples are collected from the Baiyun Depression in deep-water area of the northern South China Sea(SCS)in an effort to reconstruct transgression processes during the Paleogene based on palynalgal analysis.This study indicates that the Baiyun Depression generated a large group of palynopore assemblages and fluvial/lacustrine-related algae during the early and middle Eocene when the Wenchang Formation was deposited.The entire depression was dominated by fluvial and lacustrine facies before transgression.Its eastern and southeastern sags transitioned to shallow marine environment by generating a large abundance of marine dinoflagellates during the Enping deposition of the late Eocene.Meanwhile,the southern uplift zone simply yielded fluvial/lacustrine-related palynopores and algae,and was dominated by the fluvial and lacustrine environment during the early stage of the Enping Formation,prior to shifting into transitional setting in the later period.Northwestern sags remained extensive fluvial and delta facies without existence of marine dinoflagellates.It was until the depositional stage of the Zhuhai Formation(Oligocene)that the overall depression was strongly impacted from transgression process.Both eastern and southeastern sags were mainly under deep marine setting on a continental slope while northwestern and southern areas developed transitional facies.Although distribution and accumulation patterns varied greatly among sub-sags,the overall Baiyun Depression was characterized by widespread development of marine dinoflagellates.It should be noted that the northwestern sag also partly generated large-scale river delta deposits.Due to the eustatic rise and change of SCS spreading axis,the overall Baiyun Depression was mostly influenced by the deep marine environment on a continental slope during the early Miocene.Both northwestern sag and southern uplift zone were found plentiful marine dinoflagellates.In summary,transgression initiated from the eastern and southeastern Baiyun Depression before

关键词： South China Sea Paleogene transgression sedimentary environment plant ecology

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宋朝的动物书写——以苏轼诗文所见为中心

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社会科学战线 2024年第6期 178-189页

作者：刁培俊厦门大学历史与文化遗产学院福建厦门361005

苏轼宦游一生,所历之地覆盖了北宋的大部分版图,其经历之广,观察之细,阅读之繁,描述之多,非庸常儒士能比。在他的作品中出现了数量众多、种类不一的动物,构成了苏轼视域下实在与意象的生物世界。其中“被书写”的有软体和节肢动物门的... 详细信息

苏轼宦游一生,所历之地覆盖了北宋的大部分版图,其经历之广,观察之细,阅读之繁,描述之多,非庸常儒士能比。在他的作品中出现了数量众多、种类不一的动物,构成了苏轼视域下实在与意象的生物世界。其中“被书写”的有软体和节肢动物门的鳆鱼、蛤蜊、红螺,虾、蟹、蚊、蛩、蜂、蝶、蝗虫等;鱼纲则有鲂鱼、鲤鱼、鲈鱼、鳊鱼、鳜鱼、鲟鱼、鲫鱼、河豚、■鱼、子鱼、白鱼、沙鱼等;爬行纲的有蛇、壁虎、鼍、龟、玳瑁;鸟纲动物有鸡、雁、鹤、鹰、隼、鸥、鹭、燕、鹘、鹌鹑、鸬鹚、鹈鹕、■鸟、白鹇、鸺鹠、斑鸠、快活鸟、提壶鸟、五色雀、桐花鸟等;属于兽类(哺乳纲)的有牛、羊、马、猪、狗、鼠、虎、猿、狨、狐、鹿、麋、犀、獐、蝙蝠、鼯鼠、竹■、牛尾狸等。文章通过苏轼的存世文本再现这一历史景观并对其进行解读,由此反思方法论意义上“历史上的动物转向”和“动物的自然史”。

关键词：苏轼动物写实意象动物的自然史

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