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过一硫酸盐体系中铜分布模式控制活性物种的产生和污染物降解路径

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Engineering 2024年第4期35卷 168-179页

作者： Ning Li Haoxi Dai Mengting He Jun Wang Zhanjun Cheng beibei yan Wenchao Peng Guanyi Chen School of Environmental Science and Engineering&Tianjin Engineering Research Center of Bio Gas/Oil Technology Tianjin UniversityTianjin 300072China Department of Chemical Engineering Tianjin UniversityTianjin 300350China School of Mechanical Engineering Tianjin University of CommerceTianjin 300134China School of Science Tibet UniversityLhasa 850012China

The distribution pattern of metals as active centers on a substrate can influence the peroxymonosulfate(PMS)activation and contaminants ***,atomic layer deposition is applied to prepare Cu single atom(SA-Cu),cluster(C-Cu),and film(F-Cu)decorated MXene catalysts by regulating the number of deposition *** comparison with SA-Cu-MXene(adsorption energy(E_(ads))=-4.236 eV)and F-Cu-MXene(E_(ads)=-3.548 eV),PMS is shown to adsorb preferably on the C-Cu-MXene surface for activation(E_(ads)=-5.435 eV),realizing higher utilization *** SO_(4)^(·-)are generated in C-Cu-MXene/PMS system with steady-state concentration and 1–3 orders of magnitude higher than those in the SA-Cu-MXene and F-Cu-MXene activated PMS ***,the contribution of SO_(4)^(·-)oxidation to sulfamethoxazole(SMX)degradation followed the order,C-Cu-MXene(97.3%)>SA-Cu-MXene(90.4%)>FCu-MXene(71.9%),realizing the larger SMX degradation rate in the C-Cu-MXene/PMS system with the degradation rate constants(k)at 0.0485 min^(-1).Additionally,SMX degradation routes in C-Cu-MXene/PMS system are found with fewer toxic *** this work,we highlighted the importance of guided design of heterogeneous catalysts in the PMS *** metal distribution patterns need to be selected according to the actual water treatment *** sites could be then fully utilized to produce specific active species to improve the utilization efficiency of the oxidants.

关键词： Cu cluster Distribution pattern Peroxymonosulfate Active species Degradation routes

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我国出版公共服务社会化探索

出版科学 2024年第1期32卷 5-11页

作者：黄先蓉严贝贝武汉大学信息管理学院/武汉大学出版研究院武汉430072 武汉大学信息管理学院武汉430072

基于对出版公共服务的供需主体、价值关系、对接关系的分析,本文提出建立主体之间的协同关系,形成出版公共服务多元治理结构、完善出版公共服务合作供给模式,推动政府主导与市场化运作相结合、健全出版公共服务社会化保障机制,促进供需... 详细信息

基于对出版公共服务的供需主体、价值关系、对接关系的分析,本文提出建立主体之间的协同关系,形成出版公共服务多元治理结构、完善出版公共服务合作供给模式,推动政府主导与市场化运作相结合、健全出版公共服务社会化保障机制,促进供需关系的良好运转等具体路径,以实现我国出版公共服务社会化探索。

关键词：出版公共服务社会化供需关系出版公共服务社会化公民文化权益

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可生物降解塑料取代传统塑料--对碳排放的影响

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Engineering 2024年第1期32卷 152-162页

作者： Guanyi Chen Jianyuan Li Yunan Sun Zhi Wang Gary ALeeke Christian Moretti Zhanjun Cheng Yuan Wang Ning Li Lan Mu Jinyu Li Junyu Tao beibei yan Li'an Hou Interdisciplinary Innovation Lab for Environment and Energy School of Mechanical Engineering&School of Biotechnology and Food ScienceTianjin University of CommerceTianjin 300134China School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China School of Ecology and Environment Tibet UniversityLhasa 850012China Tianjin Key Laboratory of Biomass Wastes UtilizationTianjin Engineering Research Center for Organic Wastes Safe Disposal and Energy UtilizationTianjin 300072China School of Chemical Engineering University of BirminghamBirmingham B152TTUK Department of Environmental Systems Science ETH ZürichZürich CH-8092Switzerland

In recent years,a great deal of attention has been focused on the environmental impact of plastics,includ-ing the carbon emissions related to plastics,which has promoted the application of biodegradable *** worldwide have shown high interest in replacing traditional plastics with biodegradable ***,no systematic comparison has been conducted on the carbon emissions of biodegrad-able versus traditional plastic *** study evaluates the carbon emissions of traditional and biodegradable plastic products(BPPs)over four stages and briefly discusses environmental and economic *** scenarios-namely,the traditional method,chemical recycling,industrial composting,and anaerobic digestion-are considered for the disposal of waste BPPs(WBPPs).The analysis takes China as a case *** results show that the carbon emissions of 1000traditional plastic products(plastic bags,lunch boxes,cups,etc.)were52.09-150.36 carbon emissions equivalent of per kilogram(kg CO_(2)eq),with the stage of plastic production contributing 50.71%-50.77%.In comparison,1000 similar BPPs topped out at 21.06-56.86 kg CO_(2)eq,approximately 13.53%-62.19%lower than traditional plastic *** difference was mainly at the stages of plastic production and waste disposal,and the BPPs showed significant carbon reduction potential at the raw material acquisition *** disposal plays an important role in environmental impact,and composting and anaerobic digestion are considered to be preferable disposal methods for ***,the high cost of biodegradable plastics is a challenge for their widespread *** study has important reference significance for the sustainable development of the biodegradableplastics industry.

关键词： Carbon emissions Biodegradable plastics Different disposal scenarios Daily life consumption Environmental and economic discussion

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基于改进YOLOv5s的茶叶嫩芽检测

中国农机化学报 2024年第4期45卷 168-174页

作者：严蓓蓓纪元浩曲凤凤许金普青岛农业大学动漫与传媒学院青岛市266109 青岛农业大学园艺学院青岛市266109

为提高对茶叶嫩芽识别的准确率,提升自动采摘机器人的工作效率,减少人工采摘成本,提出一种对茶叶嫩芽目标检测的模型。通过拍摄包含白豪早茶叶嫩芽图片,进行筛选后得到179张图像,使用Mosic数据扩增后获得716张图像,建立数据集,按照训练... 详细信息

为提高对茶叶嫩芽识别的准确率,提升自动采摘机器人的工作效率,减少人工采摘成本,提出一种对茶叶嫩芽目标检测的模型。通过拍摄包含白豪早茶叶嫩芽图片,进行筛选后得到179张图像,使用Mosic数据扩增后获得716张图像,建立数据集,按照训练集、测试集和验证集7∶2∶1的比例划分数据集。针对复杂背景下茶叶嫩芽存在重叠以及遮挡所导致的识别精准度低的问题,对YOLOv5s模型进行改动,在骨干网络上增添注意力机制模块SE和CBAM进行比较;Neck网络由原来的PAFPN改为可以进行双向加权融合的BiFPN,Head结构增加浅层下采样的P2模块,提出一种茶叶嫩芽检测的模型。试验表明YOLOv5s添加SE模块结合BiFPN时模型具有更高的检测精度,并对试验结果进行十折交叉验证,相较于基线精确率提高10.46%,达到88.30%,平均精度均值mAP提高6.47%,达到85.83%。最后使用相同的数据集和预处理方法对比YOLOv5m、Faster R-CNN和YOLOv4-tiny,证明该试验方法综合强于其他经典深度学习方法,能更有效地提升茶叶嫩芽检测精准度,可以为茶叶自动采摘机器人提供理论依据。

关键词：茶叶嫩芽检测 YOLOv5s 注意力机制双向特征金字塔

基于改进ResNet50模型的咖啡生豆质量和缺陷检测方法

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中国农机化学报 2024年第4期45卷 237-243页

作者：纪元浩许金普严蓓蓓薛俊龙青岛农业大学动漫与传媒学院青岛市266109 山东省创新发展研究院济南市250101

咖啡生豆的质量决定着商品咖啡豆的价格,目前对咖啡生豆的筛选主要由人工完成,费时费力。提出一种基于改进ResNet50模型来识别咖啡生豆的方法,首先收集8000张咖啡生豆图像建立数据集,并对其进行数据增强,基于ResNet50模型加入CBAM注意... 详细信息

咖啡生豆的质量决定着商品咖啡豆的价格,目前对咖啡生豆的筛选主要由人工完成,费时费力。提出一种基于改进ResNet50模型来识别咖啡生豆的方法,首先收集8000张咖啡生豆图像建立数据集,并对其进行数据增强,基于ResNet50模型加入CBAM注意力机制,引入迁移学习机制,并使用深度可分离卷积来代替ResNet50残差单元中的传统卷积,构建适用于咖啡生豆分类识别的ResNet50-CBAM-DW模型。为评估模型改进的有效性,与ResNet50、AlexNet、VGG16、MobileNetV2等模型进行比较,改进后模型准确率达到91.1%,相较于原ResNet50模型准确率提升3.0%,参数量降低39.0%。

关键词：残差网络咖啡豆注意力机制卷积神经网络深度可分离卷积

行动的网络:从参与式艺术实践出发重寻“附近”

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雕塑 2024年第3期 88-89页

作者：闫贝贝王凯江汉大学美术学院

“附近”作为日常生活中人与人相遇的生活空间,社群中人与人在此之中彼此联结。但是,随着数字自动化时代的发展与技术的扩张,“附近”的生存界限被挤压,直至在视野中消亡。如何在技术扩张下的自动化社会中重寻被忽视进而消失的“附近”... 详细信息

“附近”作为日常生活中人与人相遇的生活空间,社群中人与人在此之中彼此联结。但是,随着数字自动化时代的发展与技术的扩张,“附近”的生存界限被挤压,直至在视野中消亡。如何在技术扩张下的自动化社会中重寻被忽视进而消失的“附近”,修补日常生活世界中断裂的纽带,重建联结彼此的话语桥梁,或许从参与式艺术这一强调“参与”与“对话”的前卫艺术形式实践中出发,会是以文化艺术的方式再造“附近”同时助力当代城市治理与社区营造中的一个启事性的范式。

关键词：附近技术参与式艺术对话艺术社区

基于改进YOLOv8s的玫瑰鲜切花分级方法

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智慧农业（中英文） 2024年第2期6卷 118-127页

作者：张玉玉邴树营纪元浩严蓓蓓许金普青岛农业大学动漫与传媒学院山东青岛266109

[目的/意义]针对当前玫瑰鲜切花分级仍依赖人工进行简单分级,造成效率低、准确率低等问题,提出一种新的模型Flower-YOLOv8s来实现玫瑰鲜切花的分级检测。[方法]以单一背景下单支玫瑰花的花头作为检测目标,将鲜切花分为A、B、C、D四个等... 详细信息

[目的/意义]针对当前玫瑰鲜切花分级仍依赖人工进行简单分级,造成效率低、准确率低等问题,提出一种新的模型Flower-YOLOv8s来实现玫瑰鲜切花的分级检测。[方法]以单一背景下单支玫瑰花的花头作为检测目标,将鲜切花分为A、B、C、D四个等级,对YOLOv8s(You Only Look Once version 8 small)模型进行了优化改进。首先,构建了一个全新的玫瑰鲜切花分级检测数据集。其次,在YOLOv8s的骨干网络分别添加CBAM(Con⁃volutional Block Attention Module)和SAM(Spatial Attion Module)两个注意力机制模块进行对比实验;选择SAM模块并对其进一步优化,针对模型轻量化需求,再结合深度可分离卷积模块一起添加到C2f结构中,形成Flower-YOLOv8s模型。[结果和讨论]从实验结果来看YOLOv8s添加SAM的模型具有更高的检测精度,mAP@0.5达到86.4%。Flower-YOLOv8s相较于基线模型精确率提高了2.1%,达到97.4%,平均精度均值(mAP)提高了0.7%,同时降低了模型参数和计算量,分别降低2.26 M和4.45 MB;最后使用相同的数据集和预处理方法与Fast-RCNN、Faster-RCNN、SSD、YOLOv3、YOLOv5s和YOLOv8s进行对比实验,证明所提出的实验方法综合强于其他经典YOLO模型。[结论]提出的基于改进YOLOv8s的玫瑰鲜切花分级方法研究能有效提升玫瑰鲜切花分级检测的精准度,为玫瑰鲜切花分级检测技术提供一定的参考价值。

关键词： YOLOv8s 玫瑰鲜切花分级检测深度学习 SAM 注意力机制

State-of-the-art applications of machine learning in the life cycle of solid waste management

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Frontiers of Environmental Science & Engineering 2023年第4期17卷 53-69页

作者： Rui Liang Chao Chen Akash Kumar Junyu Tao yan Kang Dong Han Xianjia Jiang Pei Tang beibei yan Guanyi Chen School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China School of Mechanical Engineering Tianjin University of CommerceTianjin 300134China Tianjin Key Laboratory of Biomass Wastes Utilization/Tianjin Engineering Research Center of Bio Gas/Oil Technology Tianjin 300072China School of Science Tibet UniversityLhasa 850012China

Due to the superiority of machine learning(ML)data processing,it is widely used in research of solid waste(SW).This study analyzed the research and developmental progress of the applications of ML in the life cycle of *** analyses were undertaken on the literature published between 1985 and 2021 in the Science Citation Index Expanded and Social Sciences Citation Index to provide an overview of the *** on the articles considered,a rapid upward trend from 1985 to 2021 was found and international cooperatives were found to have *** three topics of ML,namely,SW categories,ML algorithms,and specific applications,as applied to the life cycle of SW were *** has been applied during the entire SW process,thereby affecting its life *** was used to predict the generation and characteristics of SW,optimize its collection and transportation,and model the processing of its energy ***,the current challenges of applying ML to SW and future perspectives were *** goal is to achieve high economic and environmental benefits and carbon reduction during the life cycle of *** plays an important role in the modernization and intellectualization of SW *** is hoped that this work would be helpful to provide a constructive overview towards the state-of-the-art development of SW disposal.

关键词： Machine learning(ML) Solid waste(SW) Bibliometrics SW management Energy utilization Life cycle

The beneficial effects of Tartary buckwheat (Fagopyrum tataricum Gaertn.) on diet-induced obesity in mice are related to the modulation of gut microbiota composition

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Food Science and Human Wellness 2023年第4期12卷 1323-1330页

作者： Yiming Zhou Haoyu Lu Shen Zhao beibei yan Hong Wang Xiaoli Zhou Ying Xiao School of Perfume and Aroma Technology Shanghai Institute of TechnologyShanghai 201418China University Think Tank of Shanghai Municipality Institute of Beautiful China and Ecological CivilizationShanghai 201418China

The gut is home to a large number of intestinal microbiota that play an important role in the metabolism and immune system of the host.A growing body of evidence suggests that a high-fat diet is closely associated with many metabolic disorders,including fatty liver and type 2 *** to reports,Tartary buckwheat extract has a positive effect on intestinal microbiota in *** effects of Tartary buckwheat on biochemical indexes and intestinal microflora in mice were *** buckwheat protein(FGP),Tartary buckwheat resistant starch(FGS)and Tartary buckwheat flour(FGF)alleviated organ damage in mice and lowered the atherosclerotic index(AI)in ***,principal coordinate analysis(PCoA)showed that intestinal bacterial structure of FGF were separated apparently from other *** Firmicutes/Bacteroidetes(F/B)value of the high-fat(HF)-FGF group was significantly lower than that of the HF-FGP and HF-FGS *** significantly increases the abundance of beneficial bacteria such as Bifidobacterium,while decreasing the abundance of lipopolysaccharide(LPS)-producing *** of blood lipid metabolism parameters and analysis of the intestinal microbiota suggested that FGF can be more effective than FGP and FGS to reduce the effects of a high-fat diet in mice,restoring the blood parameters to values similar of those in mice fed a low-fat *** may be used to prevent or treat blood lipid metabolism disorders and intestinal microbiota disorders in mice fed a high-fat diet.

关键词： Tartary buckwheat High-fat diet Biochemical parameters Gut microbiota Lipid metabolism