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藻-菌颗粒污泥工艺在自然光昼夜交替条件下处理含复杂有机物生活污水的效能及机理研究

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环境科学研究 2021年第10期34卷 2412-2418页

作者：石钰婷季斌王初初苗璟仁孙冲杜志宇武汉科技大学城市建设学院湖北武汉430065

藻-菌颗粒污泥(MBGS)工艺是一种节能环保的新型污水处理工艺,当前关于该工艺的研究主要集中于连续光照、间歇式反应器及含简单有机物的模拟污水,对其在昼夜交替条件处理含复杂有机物污水的研究鲜有报道,从而极大地限制了MBGS工艺的进一... 详细信息

藻-菌颗粒污泥(MBGS)工艺是一种节能环保的新型污水处理工艺,当前关于该工艺的研究主要集中于连续光照、间歇式反应器及含简单有机物的模拟污水,对其在昼夜交替条件处理含复杂有机物污水的研究鲜有报道,从而极大地限制了MBGS工艺的进一步工程应用.该文采用连续流的管式光生物反应器(直径2.3 cm、管长50 cm、容积200 mL),探究了在自然光昼夜交替条件下MBGS工艺处理含复杂有机物(蛋白胨、酵母提取物、淀粉和尿素)的模拟市政污水的效能及机制.结果表明:①在白天平均进水ρ(COD)、ρ(NH_(4)^(+)-N)、ρ(TN)和ρ(PO_(4)^(3-)-P)分别为219.4、20.0、41.4和3.0 mg/L,晚上平均进水ρ(COD)、ρ(NH_(4)^(+)-N)、ρ(TN)和ρ(PO_(4)^(3-)-P)分别为237.0、21.2、43.7和3.0 mg/L的条件下,白天COD和PO_(4)^(3-)-P的平均去除率分别为77.1%和87.2%,其相应的夜晚平均去除率分别为88.0%和42.7%;TN在昼夜间的平均去除率均低于30%.②进一步分析表明,MBGS可在昼夜交替条件下调节系统DO浓度,从而实现MBGS系统的自我维持和COD的高效去除,COD在白天和晚上的平均去除速率分别约为0.34和0.42 kg(m^(3)·d).③Miseq测序结果表明,拟杆菌纲(Bacteroidia)、热带单胞菌属(Tropicimonas)和四膜虫属(Tetrahymena)丰度增高,可促进复杂有机物的降解.研究显示,MBGS工艺可以在自然光昼夜交替条件下实现有机物的高效去除,适用于碳氮比约为5的生活污水的处理.

关键词：藻-菌颗粒昼夜交替市政污水复杂有机物碳氮比

应用O型臂导航技术对骨盆骨折患者行微创手术治疗的护理

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天津护理 2020年第3期28卷 341-342页

作者：王楚楚周丹柳州市工人医院广西柳州545005

总结16例骨盆骨折患者应用O型臂导航技术进行骨盆骨折微创手术治疗的护理。做好术前准备,心理护理,术后严密观察切口愈合情况,指导患者进行功能锻炼,及时发现并发症并积极处理,做好出院指导和随访。16例患者均痊愈出院,平均随访8.7个月... 详细信息

总结16例骨盆骨折患者应用O型臂导航技术进行骨盆骨折微创手术治疗的护理。做好术前准备,心理护理,术后严密观察切口愈合情况,指导患者进行功能锻炼,及时发现并发症并积极处理,做好出院指导和随访。16例患者均痊愈出院,平均随访8.7个月,效果满意。

关键词： O型臂导航骨盆骨折微创护理

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循环振动荷载下氯盐渍土的溶陷特性

深圳大学学报（理工版） 2018年第1期35卷 62-69页

作者：蒋坪临张建新王楚楚岳晓鹏中国矿业大学(北京)力学与建筑工程学院北京100038 天津城建大学土木工程学院天津300384 天津市软土特性与工程环境重点实验室天津300384

为探究循环荷载作用下氯盐渍土溶陷特性的变化规律,通过室内溶陷和循环振动实验,引入了多因素耦合作用下影响土体溶陷特性的耦合溶陷敏感因子,进行多元线性回归分析,总结循环往复荷载作用下氯盐渍土溶陷特性的变化规律.结果表明,耦合溶... 详细信息

为探究循环荷载作用下氯盐渍土溶陷特性的变化规律,通过室内溶陷和循环振动实验,引入了多因素耦合作用下影响土体溶陷特性的耦合溶陷敏感因子,进行多元线性回归分析,总结循环往复荷载作用下氯盐渍土溶陷特性的变化规律.结果表明,耦合溶陷敏感因子随着循环次数的增加呈现出先快后缓的特点,且随荷载的增大,增幅减小;相同荷载作用下,耦合溶陷敏感因子随含水率的增加而增大;耦合溶陷敏感因子随含盐量的增加呈先增大后减小的趋势,且荷载越大,耦合溶陷敏感因子越小,表明荷载和含盐量耦合作用时,荷载具有减小土体溶陷的特性.多元线性回归分析表明,循环次数对耦合溶陷敏感因子值的贡献最大,初始含水率和荷载次之,且贡献相当,含盐量贡献最低.

关键词：岩土工程氯盐渍土溶陷循环振动荷载溶陷系数耦合溶陷敏感因子线性回归

内标法和外标法测定浓香型白酒中甲醇含量的比较分析

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酿酒 2017年第4期44卷 65-67页

作者：刘楚楚王超王录安徽古井贡酒股份有限公司安徽亳州236820 安徽省固态发酵工程技术研究中心安徽亳州236820

比较内标定量法和外标定量法在测定浓香型白酒中甲醇含量的差异。运用气相色谱法对白酒样品进行分析,然后分别采用内标法和外标法计算其甲醇含量。结果显示两种方法之间无显著性差异,均能满足检测要求。分析人员可根据实际情况使用相应... 详细信息

比较内标定量法和外标定量法在测定浓香型白酒中甲醇含量的差异。运用气相色谱法对白酒样品进行分析,然后分别采用内标法和外标法计算其甲醇含量。结果显示两种方法之间无显著性差异,均能满足检测要求。分析人员可根据实际情况使用相应的定量方式。

关键词：甲醇气相色谱仪内标法外标法

The reformation of catalyst:From a trial-and-error synthesis to rational design

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Nano Research 2024年第4期17卷 3261-3301页

作者： Ligang wang Jiabin Wu Shunwu wang Huan Liu Yao wang Dingsheng wang Department of Chemistry Tsinghua UniversityBeijing 100084China

The appropriate catalysts can accelerate the reaction rate and effectively boost the efficient conversion of various molecules,which is of great importance in the study of chemistry,chemical industry,energy,materials and environmental ***,efficient,environmentally friendly,and easy to operate synthesis methods have been used to prepare various types of *** previous studies have reported the synthesis and characterization of the aforementioned catalysts,more still remain in trial and error methods,without in-depth consideration and improvement of traditional synthesis ***,we comprehensively summarize and compare the preparation methods of the trial-and-error synthesis strategy,structure–activity relationships and density functional theory(DFT)guided catalysts rational design for nanomaterials and atomically dispersed *** also discuss in detail the utilization of the nanomaterials and single atom catalysts for converting small molecules(H_(2)O,O_(2),CO_(2),N_(2),etc.)into value-added products driven by electrocatalysis,photocatalysis,and ***,the challenges and outlooks of mass preparation and production of efficient and green catalysts through conventional trial and error synthesis and DFT theory are featured in accordance with its current development.

关键词： trial-and-error synthesis structure–activity relationships density functional theory(DFT)guidance nanomaterials atomically dispersed catalysts

论埃迪卡拉纪微体球状化石Schizofusa与Leiosphaeridia的关系

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微体古生物学报 2015年第1期32卷 75-82页

作者：王楚楚刘鹏举张世红尚晓冬中国地质大学(北京) 北京100083 中国地质科学院地质研究所北京100037

埃迪卡拉纪是新元古代最后一个纪,是新元古代雪球地球事件与寒武纪生命大爆发之间地质历史最重要的转折时期,在研究地球早期生命演化方面具有举足轻重的地位。我国华南三峡地区埃迪卡拉系陡山沱组中下部的地层中,发现了大量的以具刺疑... 详细信息

埃迪卡拉纪是新元古代最后一个纪,是新元古代雪球地球事件与寒武纪生命大爆发之间地质历史最重要的转折时期,在研究地球早期生命演化方面具有举足轻重的地位。我国华南三峡地区埃迪卡拉系陡山沱组中下部的地层中,发现了大量的以具刺疑源类为主的微体化石,其中有两个形态简单、分布广泛的类型——分别是以光面、球状为特征的Leiosphaeridia和光面囊胞状、具开裂特征的Schizofusa。本文通过对这两种化石材料的细致观察与统计,对两者间的亲缘关系进行了详细探讨,认为Schizofusa开裂之前应为光面球体,即Schizofusa是某些光面球的发展演化后期阶段。

关键词：光面球裂梭藻疑源类亲缘关系埃迪卡拉纪陡山沱组华南

Numerical Analysis of PRISM-PY Calculations for Hard-and Soft-Core Generic Polymer Models

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Chinese Journal of Polymer Science 2024年第4期42卷 532-543页

作者： Qiang wang Department of Chemical and Biological Engineering Colorado State University1370 Campus DeliveryFort CollinsCO80523-1370USA

Generic polymer models capturing the chain connectivity and excluded-volume interactions between polymer segments can be classified, according to whether or not the 3D integral of the latter diverges, into hard- and soft-core models. Taking homogeneous systems of compressible homopolymer melts (or equivalently homopolymer solutions in an implicit, good solvent) in the continuum as an example, we recently compared the correlation effects on the structural and thermodynamic properties of the hard- and soft-core models given by the polymer reference interaction site model (PRISM) theory with the Percus-Yevick (PY) closure (Polymers 2023, 15, 1180). Here we analyzed in detail the numerical errors and behavior of the interchain pair correlation functions (PCFs) given by the PRISM-PY calculations of these models using an efficient numerical approach that we proposed. Our numerical approach has the least number of independent variables to be iteratively solved, analytically treats the discontinuities caused by the non-bonded pair potential (such as that of the hard spheres) and takes only the inverse Fourier transform of the interchain indirect PCF between polymer segments (which is continuous and decays towards 0 with increasing wavenumber much faster than both the interchain direct and total PCFs), and is essential for us to accurately solve the PRISM-PY theory for chain length N as large as 106. To capture the correlation-hole effect, the real-space cut-off in the PRISM calculations should be proportional to the square root of N.

关键词： Generic polymer models Soft potentials Polymer reference interaction site model theory

Linear-Quadratic Pareto Cooperative Game for Mean-Field Backward Stochastic System

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Journal of Systems Science & Complexity 2024年第3期37卷 947-964页

作者： wang Yu School of Control Science and Engineering Shandong UniversityJinan 250061China

This paper focuses on a Pareto cooperative differential game with a linear mean-field backward stochastic system and a quadratic form cost functional. Based on a weighted sum optimality method, the Pareto game is equivalently converted to an optimal control problem. In the first place,the feedback form of Pareto optimal strategy is derived by virtue of decoupling technology, which is represented by four Riccati equations, a mean-field forward stochastic differential equation(MF-FSDE),and a mean-field backward stochastic differential equation(MF-BSDE). In addition, the corresponding Pareto optimal solution is further obtained. Finally, the author solves a problem in mathematical finance to illustrate the application of the theoretical results.

关键词： Backward stochastic differential equation linear-quadratic control mean-field Pareto optimality

A multi-source information fusion layer counting method for penetration fuze based on TCN-LSTM

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Defence Technology（防务技术） 2024年第3期33卷 463-474页

作者： Yili wang Changsheng Li Xiaofeng wang Nanjing University of Science and Technology Nanjing 210094JiangsuChina State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

When employing penetration ammunition to strike multi-story buildings,the detection methods using acceleration sensors suffer from signal aliasing,while magnetic detection methods are susceptible to interference from ferromagnetic materials,thereby posing challenges in accurately determining the number of *** address this issue,this research proposes a layer counting method for penetration fuze that incorporates multi-source information fusion,utilizing both the temporal convolutional network(TCN)and the long short-term memory(LSTM)recurrent *** leveraging the strengths of these two network structures,the method extracts temporal and high-dimensional features from the multi-source physical field during the penetration process,establishing a relationship between the multi-source physical field and the distance between the fuze and the target plate.A simulation model is developed to simulate the overload and magnetic field of a projectile penetrating multiple layers of target plates,capturing the multi-source physical field signals and their patterns during the penetration *** analysis reveals that the proposed multi-source fusion layer counting method reduces errors by 60% and 50% compared to single overload layer counting and single magnetic anomaly signal layer counting,*** model's predictive performance is evaluated under various operating conditions,including different ratios of added noise to random sample positions,penetration speeds,and spacing between target *** maximum errors in fuze penetration time predicted by the three modes are 0.08 ms,0.12 ms,and 0.16 ms,respectively,confirming the robustness of the proposed ***,the model's predictions indicate that the fitting degree for large interlayer spacings is superior to that for small interlayer spacings due to the influence of stress waves.

关键词： Penetration fuze Temporal convolutional network(TCN) Long short-term memory(LSTM) Layer counting Multi-source fusion