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焦化厂污染土壤中18种PAHs分布特征及健康风险评估

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生态与农村环境学报 2024年第2期40卷 266-275页

作者：张守文李咏梅王彩李恒宇李晨徐绍英孙宁董周宾山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) 山东济宁272100 自然资源部采煤沉陷区综合治理工程技术创新中心山东济宁272000

为研究焦化厂土壤中多环芳烃(PAHs)的污染特征及其健康风险,以某焦化厂为目标,布设260个点位,根据各点位污染情况,采集不同深度的土壤样品共780件。通过分析样品中18种PAHs含量,探讨了不同判定标准下厂区土壤中PAHs总体污染程度以及不... 详细信息

为研究焦化厂土壤中多环芳烃(PAHs)的污染特征及其健康风险,以某焦化厂为目标,布设260个点位,根据各点位污染情况,采集不同深度的土壤样品共780件。通过分析样品中18种PAHs含量,探讨了不同判定标准下厂区土壤中PAHs总体污染程度以及不同功能区污染状况特征,同时根据HJ 25.3—2019《建设用地土壤污染风险评估技术导则》对厂区内18种PAHs进行健康风险评价。结果表明:(1)该焦化厂污染水平较高,且厂区污染在空间上表现出强烈非均质性。厂区内PAHs以2~3环为主,占比为58.82%,4~6环PAHs占比为41.48%。厂区内以苯并[a]芘为基准的6种主要风险PAHs的毒性当量浓度(TEQ Bap)分布特征与总PAHs(∑18 PAHs)含量分布具有一致性。(2)不同功能区表层土壤PAHs含量均值从高到低依次为污水处理区>化产区>焦炉区>锅炉发电厂>煤炭储存区>办公区。不同功能区低环与中高环PAHs含量比值不同,表明各区域污染物来源存在差异。(3)厂区内主要健康风险来源于化合物的致癌风险,不同功能区的致癌风险水平差异较大,污水处理区致癌风险超标倍数及超标率远超化产区及焦炉区。由于苯并[j]荧蒽的加入,PAHs总致癌风险增加0.93%~204.46%,厂区内总致癌风险超标点位增加5个。

关键词：焦化厂污染土壤多环芳烃分布特征健康风险评估

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基于深度强化学习算法的储能系统盈利策略研究

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电力需求侧管理 2024年第2期26卷 20-26页

作者：杨国山董鹏旭姚苏航王永利宋汶秦周东国网甘肃省电力公司经济技术研究院兰州730050 华北电力大学经济与管理学院北京102206

在高比例新能源接入下,配置储能可以辅助电力系统削峰填谷,平抑波动。然而目前储能系统成本较高,需要政府进行支持。为此,提出了一种储能盈利策略,以在电网、储能运营商和用户组成的电力市场中实现运营利润最大化。结合智能算法提出了... 详细信息

在高比例新能源接入下,配置储能可以辅助电力系统削峰填谷,平抑波动。然而目前储能系统成本较高,需要政府进行支持。为此,提出了一种储能盈利策略,以在电网、储能运营商和用户组成的电力市场中实现运营利润最大化。结合智能算法提出了一种考虑激励的盈利策略,为每个峰值时段的储能系统运营商提供不同权重的奖励分配。该算法一方面基于最小二乘支持向量机的深度学习,来建立价格和负荷预测模型;另一方面基于深度强化学习,考虑电网的峰值状态、用户负荷需求和储能系统运营商利润,确定最优充放电策略。最后通过案例分析,验证该策略可以显著提高储能系统运营商利润并减轻电网压力。

关键词：储能系统盈利策略支持向量机深度强化学习算法

Analyzing the characterization of pore structures and permeability of diesel contaminated clays under different aging conditions

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Frontiers of Structural and Civil Engineering 2023年第8期17卷 1264-1280页

作者： Yeyang CHUN dong zhou Zonghui LIU Chenhui LIU Tenglong LIANG dongpo SU Zheng HUANG Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education School of Civil Engineering and ArchitectureGuangxi UniversityNanning 530004China College of Civil Engineering and Architecture Guangxi University for NationalitiesNanning 530006China

In this study,mercury intrusion porosimetry(MIP)and X-ray micro-computed tomography(XRµCT)were used to characterize the pore structures and investigate the permeability characteristics of clay after aging and contamination with *** results of the MIP tests showed that aging leads to reductions in porosity and average diameter,as well as an increase in *** XRµCT analysis yielded consistent results;it showed that aging renders pores more spherical and isotropic and pore surfaces *** weakens the pore *** analysis revealed that aging led to the rearrangement of soil particles,tighter interparticle overlapping,and a reduction in pore *** combination of MIP and XRµCT provided a comprehensive and reliable characterization of the soil pore *** increased diesel content increased the porosity and average diameter and reduced the tortuosity of the *** analysis showed that aging weakens interparticle cohesion;this causes large agglomerates to break down into smaller agglomerates,resulting in a tighter arrangement and a subsequent reduction in *** increase in diesel content increases the number of large agglomerates and pore spaces between agglomerates,resulting in increased *** aging and diesel content can weaken the permeation characteristics of soil.

关键词： MIP XRµCT aging diesel content pore structure permeability characteristics

Digital twin-driven green material optimal selection and evolution in product iterative design

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Advances in Manufacturing 2023年第4期11卷 647-662页

作者： Feng Xiang Ya-dong zhou Zhi Zhang Xiao-Fu Zou Fei Tao Ying Zuo Key Laboratory of Metallurgical Equipment and Control Technology Ministry of EducationWuhan University of Science and TechnologyWuhan430081People’s Republic of China Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering Wuhan University of Science and TechnologyWuhan430081People’s Republic of China Institute of Artificial Intelligence Beihang UniversityBeijing100191People’s Republic of China School of Automation Science and Electrical Engineering Beihang UniversityBeijing100191People’s Republic of China Research Institute for Frontier Science Beihang UniversityBeijing100191People’s Republic of China

In recent years,green concepts have been integrated into the product iterative design in the manufacturing field to address global competition and sustainability ***,previous efforts for green material optimal selection disregarded the interaction and fusion among physical entities,virtual models,and users,resulting in distortions and inaccuracies among user,physical entity,and virtual model such as inconsistency among the expected value,predicted simulation value,and actual performance value of evaluation ***,this study proposes a digital twin-driven green material optimal selection and evolution method for product iterative ***,a novel framework is ***,an analysis is carried out from six perspectives:the digital twin model construction for green material optimal selection,evolution mechanism of the digital twin model,multi-objective prediction and optimization,algorithm design,decision-making,and product function ***,taking the material selection of a shared bicycle frame as an example,the proposed method was verified by the prediction and iterative optimization of the carbon emission index.

关键词： Product iterative design Digital twin(DT) Green material optimal selection Evolution mechanism Iterative optimization

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一种十一烯酸锌抗菌液体外抗菌效果研究

中国消毒学杂志 2024年第1期41卷 8-9页

作者：周东顺贾玉萍李浩山东第一医科大学山东省医学科学院山东济南250117 山东省药学科学院

目的研究一种十一烯酸锌抗菌液的体外抗菌效果及相关性能。方法采用悬液定量杀菌试验方法,对该抗菌液的抗菌效果进行观察。结果该抗菌液的十一烯酸锌含量为110 mg/L,原液呈酸性。该抗菌液原液pH值为2.75时,分别对悬液内大肠埃希菌、金... 详细信息

目的研究一种十一烯酸锌抗菌液的体外抗菌效果及相关性能。方法采用悬液定量杀菌试验方法,对该抗菌液的抗菌效果进行观察。结果该抗菌液的十一烯酸锌含量为110 mg/L,原液呈酸性。该抗菌液原液pH值为2.75时,分别对悬液内大肠埃希菌、金黄色葡萄球菌和白色念珠菌作用1 min,平均杀菌率均≥90%;pH值在2.75~3.56范围内,其抗菌效果随着pH值升高而降低。结论该十一烯酸锌抗菌液对细菌繁殖体和真菌具有良好的抗菌作用。

关键词：十一烯酸锌抗菌液抗菌效果

“双减”背景下家庭体育作业高质量发展的价值意蕴、现实挑战与实践进路

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红河学院学报 2024年第3期22卷 136-139页

作者：谷小兵董志周万宇上海市青浦区教师进修学院上海201700 河北科技工程职业技术大学体育工作部河北邢台054000 红河学院体育学院云南蒙自661199

“双减”政策的实施将新时代学校体育教育改革推向时代的前沿,家庭体育作业也愈发受到广泛关注。运用文献资料、专家访谈、实地调研等研究方法,对“双减”背景下家庭体育作业高质量发展进行深度探究。结果显示,家庭体育作业高质量发展... 详细信息

“双减”政策的实施将新时代学校体育教育改革推向时代的前沿,家庭体育作业也愈发受到广泛关注。运用文献资料、专家访谈、实地调研等研究方法,对“双减”背景下家庭体育作业高质量发展进行深度探究。结果显示,家庭体育作业高质量发展的价值意蕴在于理念革新,表现为:推动新时代学校体育改革向纵深发展;人才支撑为青少年体质健康发展提供强力支持;筑牢根基为夯实广泛参与全民健身运动群众基础。现实挑战在于顶层设计,表现为:制度机制不健全,保障不充分;内部控制方面科学合理性不足,设置不明确;外部局限方面家庭认知不准确,观念有偏误。实践进路在于固本强基,需做到:加强顶层制度建设,健全保障机制;增效提质方面提升作业设计实效,保障科学合理;协同联动方面多元责任主体共担,多方组合发力。

关键词： “双减” 家庭体育作业高质量发展现实挑战实践路径

Resolution of herpes zoster-induced small bowel pseudo-obstruction by epidural nerve block:A case report

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World Journal of Clinical Cases 2022年第27期10卷 9873-9878页

作者： You-Cai Lin Xiao-Guang Cui Li-Zhu Wu dong-Qing zhou Qi zhou Department of Anesthesiology The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102Hainan ProvinceChina

BACKGROUND When herpes zoster is complicated with paralytic ileus,this mostly involves acute intestinal pseudo-obstruction of Ogilvie’s syndrome manifesting as obvious dilatation of the cecum and right colon;small intestinal obstruction is ***,we present a patient with a very rare case of small bowel *** SUMMARY A 76-year-old female patient complained of right upper quadrant *** days later,a blistering,right-sided rash of the thoracoabdominal dermatome(T5-T10) emerged in conjunction with small intestinal dilatation and the inability to *** tomography of the abdomen confirmed small bowel *** therapy,gastrointestinal decompression,and enemas proved *** 4 d of stagnation,an epidural block was performed for pain relief and prompted the passage of gas and stool,resolving the obstructive *** days later,the rash appeared dry and crusted,and the pain *** 5 d,no abnormality was visible by gastroenteroscopy,and the patient was discharged on day *** This case shows that herpes zoster may induce small bowel pseudo-obstruction in addition to colonic *** block can not only treat intercostal neuralgia but also resolve small bowel pseudo-obstruction caused by herpes zoster.

关键词： Herpes zoster virus Ogilvie’s syndrome Small bowel pseudo-obstruction Epidural nerve block Case report

First-order approximate analytical expressions of oblique incident elastic wave at an interface of porous media saturated with a nonviscous fluid

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Petroleum Science 2022年第6期19卷 2720-2740页

作者： dong-Yong zhou Xing-Yao Yin Xiao-Tao Wen Xi-Lei He Zhen-Hua He State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengduSichuan610059China Key Laboratory of Earth Exploration and Information Technology of Ministry of Education Chengdu University of TechnologyChengduSichuan610059China College of Geosciences and Technology China University of Petroleum(East China)QingdaoShandong266580China

The analysis technology of Amplitude Variation with Offset(AVO)is one of the important methods for oil and gas reservoir *** equation and its approximations are the theoretical basis of AVO analysis,which assumes that the upper and lower media of a horizontal interface are single-phase *** by this assumption,AVO analysis has limited prediction and identification accuracy for complex porous *** view of this,the first-order approximate analytical expressions of oblique elastic wave at an interface of porous media are ***,the incident and scattering characteristics of various waves at the interface of porous media are analyzed,and the displacement vectors generated by these elastic waves are described by exponential ***,the kinematic and dynamic boundary conditions at the interface of porous media are ***,by substituting the displacement vectors of incident and scattered waves into boundary conditions,the exact analytical equation is ***,considering the symmetry of scattering matrix in the equation,the exact analytical expressions of each scattered wave are ***,under the assumptions of small incident angle,weak elasticity at an interface of porous media,and ignoring the second-and higherorder terms,the first-order approximate analytical expressions are *** a model of sandstone porous media with different porosity in upper and lower media,the correctness of the approximate analytical expressions is verified,and the elastic wave response characteristics of lithology and pore fluids are analyzed.

关键词： First-order approximate expressions Oblique incident wave Elastic plane wave Porous media Scattering coefficient

Calculation and management of ketogenic diet parenteral nutrition in super-refractory status epilepticus

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Acta Epileptologica 2022年第3期5卷 136-144页

作者： Ya Zeng Jie Mu dong zhou Pharmacy Department West China Hospital of Sichuan University14#Third SectionRenmin Nan RoadChengdu 610041China Neurology Department West China Hospital of Sichuan University14#Third SectionRenmin Nan RoadChengdu 610041China

Super-refractory status epilepticus(SRSE)is an important neurological emergency associated with high mortality and morbidity and poses a heavy economic burden on *** diet parenteral nutrition(KD-PN)is ketogenic diet therapy provided through parenteral administration and may be an adjuvant treatment for these who cannot accept enteral ***,the calculation and management of KD-PN presents a challenge for *** review focuses on the practical aspects of KD-PN therapy for treatment of SRSE,including the dietary composition,potential drug-diet interactions,and monitoring during KD-PN *** with all SRSE treatments,KD-PN has many adverse effects,like hyperlipemia,hepatotoxicity,metabolic acidosis,insufficient ketosis or hyper-ketosis,and propofol infusion *** summarize monitoring and treatment methods in our *** review provides some practical aspects for treatment of SRSE.

关键词： Epilepsy Super-refractory status epilepticus Ketogenic diet parenteral nutrition