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基于大数据分析的电解铝生产能力预测研究

科技创新与生产力 2024年第1期45卷 22-25页

作者：肖文富余春艳天山铝业集团股份有限公司上海200135

本研究采用大数据分析方法对电解铝生产能力进行预测。首先收集与整理相关数据,然后通过机器学习、时间序列分析等方法构建预测模型。验证结果显示,所构建的模型具有较高的准确性和可靠性。分析表明,原材料价格、政策变化和市场需求等... 详细信息

本研究采用大数据分析方法对电解铝生产能力进行预测。首先收集与整理相关数据,然后通过机器学习、时间序列分析等方法构建预测模型。验证结果显示,所构建的模型具有较高的准确性和可靠性。分析表明,原材料价格、政策变化和市场需求等因素对电解铝生产能力具有显著影响。本研究可为电解铝行业提供有益的生产决策参考,为未来研究方向和实际应用奠定基础。

关键词：电解铝生产能力大数据分析预测模型关键因素行业决策

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CA-YOLOv5: Detection model for healthy and diseased silkworms in mixed conditions based on improved YOLOv5

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International Journal of Agricultural and Biological Engineering 2023年第6期16卷 236-245页

作者： Hongkang Shi wenfu xiao Shiping Zhu Linbo Li Jianfei Zhang College of Engineering and Technology Southwest UniversityChongqing 400700China Sericultural Research Institute Sichuan Academy of Agricultural SciencesNanchong 637000SichuanChina Yibin Academy of Southwest University Yibin 644000SichuanChina State Key Laboratory of Resource Insects Southwest UniversityChongqing 400700China

The accurate identification and localization of diseased silkworms is an important task in the research of disease precision control technology and equipment development in the sericulture industry. However, the existing deep learning-based methods for this task are mainly based on image classification, which fails to provide the location information of diseased silkworms. To this end, this study proposed an object detection-based method for identifying and locating healthy and diseased silkworms. Images of mixed healthy and diseased silkworms were collected using a mobile phone, and the category and location of each silkworm were labeled using LabelImg as a labeling tool to construct an image dataset for object detection. Based on the one-step detection model YOLOv5s, the ConvNeXt-Attention-YOLOv5 (CA-YOLOv5) model was designed in which the large kernel with depth-wise separable convolution (7×7 dw-conv) of ConvNeXt was adopted to expand receptive fields and the channel attention mechanism ECANet was added to enhance the capability of feature extraction. Experiments showed that the mean average precision (mAP) values of CA-YOLOv5 for healthy and diseased silkworms reached 96.46%, which is 1.35% better than that achieved via YOLOv5s. At the same time, the overall performance of CA-YOLOv5 was significantly better than state-of-the-art one-step models, such as Single Shot MultiBox Detector (SSD), CenterNet, and EfficientDet, and even improved YOLOv5 using image attention mechanism and a lightweight backbone, like SENet-YOLOv5 and MobileNet-YOLOv5. The results of this study can provide an important basis for the accurate positioning of diseased silkworms in precision disease control technology and equipment development.

关键词： diseased silkworm detection YOLOv5 mixed conditions image attention mechanism object detection

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家蚕细纤度茧丝结构和特征

纺织科技进展 2024年第8期46卷 33-37页

作者：蒋亚明卿圣环何明辉张友洪肖文福四川省农业科学院蚕业研究所(四川省农业科学院特种经济动植物研究所) 四川南充637000

为比较细纤度茧丝家蚕新品种与其亲本茧丝结构特征和差异,对具有遗传关系的5个家蚕品种所产茧丝进行性状检测分析。结果表明,雄蚕茧丝比雌蚕纤细,细纤度茧丝比普通茧丝纤细;亲本雌雄茧丝分子结晶程度差异小于杂交组合品种;茧丝的主要结... 详细信息

为比较细纤度茧丝家蚕新品种与其亲本茧丝结构特征和差异,对具有遗传关系的5个家蚕品种所产茧丝进行性状检测分析。结果表明,雄蚕茧丝比雌蚕纤细,细纤度茧丝比普通茧丝纤细;亲本雌雄茧丝分子结晶程度差异小于杂交组合品种;茧丝的主要结构为包含脂肪胺的蛋白质复合物,其中酰胺Ⅰ和Ⅱ含量最高,主体排列结构为β折叠;各品种茧丝分子取向程度不同,杂交品种茧丝分子的取向程度基本高于亲本细纤度品种,且雌雄之间差异较大,亲本品种之间雌雄差异较小;细纤度茧丝的热稳定性基本优于普通茧丝。

关键词：家蚕细纤度茧丝新品种结构

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活蛹缫丝对家蚕综合经济性状的影响

贵州农业科学 2024年第7期52卷 53-62页

作者：胡春梅张智勇粟思源刘俊凤张锦川肖文福刘彬斌四川省农业科学院蚕业研究所/特种经济动植物研究所四川南充637000

【目的】探明活蛹缫丝对家蚕杂交组合及其亲本的健康性、茧丝质量、品种特性等综合经济性状的影响,为家蚕新材料的创制、筛选和固定以及突破性新蚕品种的定向培育提供理论依据。【方法】2019—2022年,以亲本造A和兰B为试验材料,连续4代... 详细信息

【目的】探明活蛹缫丝对家蚕杂交组合及其亲本的健康性、茧丝质量、品种特性等综合经济性状的影响,为家蚕新材料的创制、筛选和固定以及突破性新蚕品种的定向培育提供理论依据。【方法】2019—2022年,以亲本造A和兰B为试验材料,连续4代对亲本进行活蛹缫丝试验并进行继代保育,同时随代制备杂交组合,以未进行活蛹缫丝的亲本和杂交组合为对照,调查龄期经过、四龄病小蚕数量、产茧量、全茧量、茧层量,观测茧形情况并分粒计数、缫丝茧个体重量和范围、切断、纇节、丝长、丝干重,调查母蛾产卵量、不良卵粒数及孵化情况。【结果】活蛹缫丝亲本(造A和兰B)饲育成绩中结茧率、虫蛹率和全茧量3项指标与对照差异显著(P<0.05),部分指标的提升与饲育季节相关。亲本的纇节与切断次数随活蛹缫丝不断深入而逐代明显减少,茧丝长度明显增长。活蛹缫丝导致亲本的产卵量减少,产附变差。产卵量变化在亲本间及亲本与对照间差异均显著(P<0.05)。杂交组合(造A×兰B)饲育指标中发育经过(五龄和全龄经过)、普茧率和结茧率与对照无显著差异,健蛹率较对照有一定增加,万头蚕产茧量较对照有不同程度减少;全茧量和茧层率因季节呈动态变化,总平均与对照基本持平;万头蚕产茧量和虫蛹率与对照差异显著(P<0.05)。杂交组合缫丝成绩中清洁和净度与对照无差别,上车茧率和解舒率随活蛹缫丝不断深入而逐代提高,茧丝长、茧丝纤度和万米吊糙呈动态变化,总平均与对照基本持平;茧丝长和解舒率2项指标与对照差异显著(P<0.05)。【结论】经活蛹缫丝处理亲本(造A和兰B)的纇节与切断次数随缫丝不断深入而逐代明显减少,茧丝长明显增长,普茧率和茧层率与对照基本持平。亲本结茧率和健蛹率较对照均有不同程度提高,结茧率造A和兰B春季分别提升3.69%和3.76%,秋季分别提升8.13%和1.70%;健蛹率造A和兰B春季分别提升4.55%和6.19%,秋季分别提升8.23%和0.98%。亲本经活蛹缫丝的杂交组合(造A×兰B)的普茧率、健蛹率、茧质成绩较对照均有不同程度提升,春季的普茧率、健蛹率、解舒率和丝长分别较对照提高3.73%、0.84%、3.00%和4.34%;秋季的普茧率与对照基本持平,而健蛹率、解舒率和丝长分别较对照提高0.67%、3.90%和1.62%。

关键词：家蚕活蛹缫丝结茧率健康性茧丝品种品种特性综合经济性状

基于ITS 2对家蚕人工饲料霉变病原微生物的检测

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贵州农业科学 2024年第1期52卷 80-85页

作者：邹邦兴卿圣环张宇靖蒋亚明张友洪肖文福周安莲四川省农业科学院蚕业研究所四川南充637000

【目的】探明引起家蚕人工饲料霉变的病原微生物,为制定防止家蚕人工饲料霉变决策提供科学依据。【方法】对饲料霉变区域随机取样,对其ITS2区域进行序列扩增检测,通过OTU聚类、物种注释和Alpha多样性分析其在不同分类水平下的物种组成... 详细信息

【目的】探明引起家蚕人工饲料霉变的病原微生物,为制定防止家蚕人工饲料霉变决策提供科学依据。【方法】对饲料霉变区域随机取样,对其ITS2区域进行序列扩增检测,通过OTU聚类、物种注释和Alpha多样性分析其在不同分类水平下的物种组成。【结果】引起家蚕人工饲料霉变致病微生物主要生物学分类为真菌界(Fungi)、子囊菌门(Ascomycota,99.98%~100%)、散囊菌纲(Eurotiomycetes,99.80%~99.97%)、散囊菌目(Eurotiomycetes,99.80%~99.97%)、毛刷囊菌科(Trichocomaceae,99.80%~99.97%)、石座菌属(Petromyces,99.80%~99.96%)、黄曲霉菌(Aspergillus flavus,99.75%~99.91%)。【结论】引起家蚕人工饲料霉变的病原菌主要为真菌界的黄曲霉菌。

关键词：家蚕人工饲料霉变微生物 ITS2区域

An integrated transcriptome and proteomic investigation of the stress responses of VBNC state Salmonella Enteritidis triggered by sodium hypochlorite

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Food Science and Human Wellness 2024年

作者： Wen Wang Wensi Wang Zhengkai Yi Jiele Ma wenfu Hou Yingping xiao Hua Yang Hongxun Wang Xingning xiao State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products MOA Laboratory of Quality & Safety Risk Assessment for Agro-Products (Hangzhou) Institute of Agro-Product Safety and Nutrition Zhejiang Academy of Agricultural Sciences College of Food Science and Engineering Wuhan Polytechnic University

Viable but non-culturable （VBNC） bacteria after chlorination disinfection pose a considerable threat to the public health and environment. The current work aimed to uncover the stress adaptation mechanisms of VBNC S. Enteritidis to sodium hypochlorite. In this study， we investigated the morphology， gene expressions and proteomic profile in VBNC S. Enteritidis. It demonstrated that 109cells mL-1of bacteria could transition into the VBNC state after exposure to 50 mg L-1chlorine for 2.5 h. The VBNC state cells exhibited cellular membrane impairment， decreased size， and intracellular ATP depletion compared to the culturable cells. In the VBNC state cells， there was a significant increase in intracellular reactive oxygen species （ROS） levels and NAD+/NADH ratios. This observation suggested an imbalance in the intracellular redox status of the VBNC bacteria. Transcriptome and proteomic analysis revealed significant upregulation of the resistance-nodulation-division （RND） efflux systems （arcA， tolC， ramA）， oxidative stress response genes （soxR， trxA， grxB）， DNA repair genes （lexA， radA， mutH， mutL）， and virulence factor genes （sseA， sseL， eutS， and eutN）. Our findings indicated that it is important to formulate disinfection protocols that are specifically designed for food processing plants and healthcare facilities， focusing on implementing a more thorough disinfection method to effectively eradicate VBNC cells.

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Books Released to Celebrate Anniversary of China-France Relations

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China & The World Cultural Exchange 2014年第5期80卷 18-19页

作者： xiao Lianbing Song wenfu

Key technology for construction of connection between steel pylonand concrete pile cap of middle pylon of Taizhou Bridge

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Engineering Sciences 2012年第3期10卷 8-11页

作者： Sun Yuxiang Zhang Hong xiao wenfu Huang Tao You Xinpeng China Communications 2nd Navigational Bureau 2nd Engineering Co. Ltd. Chongqing 400042 China China Communications 2nd Navigational Bureau Co. Ltd. Wuhan 430040 China Key Laboratory in Communications Industry for Construction Technologies of Long and Large Bridges Wuhan 430040 China

Taizhou Bridge is a suspension bridge with three pylons and two 1 080 m main spans. The middle pylon is a steel frame with longitudinal herringbone shape and lateral gate shape. The connection between steel pylon and concrete pile cap is a key part to transfer the huge inner force from the pylon to the foundation. Its construction quality is a critical factor to the overall structural loading of the whole bridge; therefore the contact ratio between the bearing steel plate of pylon and concrete pile cap is required to be over 75 %. The inclined joint surface in two directions, longitudinally at 39/1 920 and laterally at 1/4, posted a challenge to the construction work. A procedure test was carried out to find an optimal construction method by comparison, and finally the post-injection method was selected as it can meet the requirement of concrete strength and contact ratio at the connection. The successful application of the post-injection method in Taizhou Bridge can provide an example and reference for similar projects in the future.

关键词：混凝土强度钢塔连接桩帽大桥技术索塔注射方法

基于LabVIEW的车床主轴箱噪声源识别系统的开发

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制造技术与机床 2008年第12期 99-101页

作者：肖文福萍乡高等专科学校江西萍乡337055

利用LabVIEW8.2和声卡开发了车床主轴箱噪声源识别系统。系统不仅可以测量车床噪声声压级,而且可以对采集到的车床噪声信号进行时域分析和频域分析,能够快速、准确定位车床主轴箱噪声源,具有很大的实用价值。

关键词： LabVIEW 车床噪声