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紫外线消毒系统中超声波抑垢的机制及参数优化

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土木与环境工程学报（中英文） 2025年第1期47卷 221-228页

作者：陈光赵志伟李莉重庆大学环境与生态学院重庆400045

紫外消毒技术因具有无须投加化学药剂、消毒广谱性、产生副产物少等优势越来越受重视,但石英套管结垢引起的消毒效果难以保障,成为限制紫外消毒技术发展的瓶颈。在污水厂紫外线消毒渠中搭建中试试验装置,利用超声波抑制石英套管结垢,结... 详细信息

紫外消毒技术因具有无须投加化学药剂、消毒广谱性、产生副产物少等优势越来越受重视,但石英套管结垢引起的消毒效果难以保障,成为限制紫外消毒技术发展的瓶颈。在污水厂紫外线消毒渠中搭建中试试验装置,利用超声波抑制石英套管结垢,结果表明,超声波能通过延长结垢诱导期来抑制垢的生成;以相对紫外线强度为考察对象,通过单因素试验确定超声波功率、清洗周期、超声时间合适的范围分别在500~1000 W、0.5~1.0 d、20~40 min;对于使用时间为0、0.5、1、3、5 a的石英套管,超声波均有很好的抑垢效果。为了进一步优化参数,采用Box-Behnken设计法和响应面分析方法对主要因素加以优化,得到了响应面回归模型和最优解。结果表明,超声波技术抑垢清垢的优化工艺参数为超声波功率P=965 W,清洗周期T=0.5 d,超声时间t=34 min,预测相对紫外线强度最大值为1.01。通过统计学检验,模型具有良好的拟合性,在优化工艺条件下得到的相对紫外线强度预测值与试验值接近,误差为1.00%。

关键词：超声波紫外线消毒石英套管结垢响应面法

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High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials

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Journal of Energy Chemistry 2025年第1期100卷 426-457页

作者： Chong Peng Xinyi Huang Mingwei zhao Shuling liao Quanhong Yang Nianjun Yang Siyu Yu School of Chemistry & Chemical Engineering Southwest University Nanoyang Group Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of hightemperature-tolerant FSCs(HT-FSCs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-FSCs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-FSCs are discussed, alongside strategies for elevating operational temperatures and *** review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-FSCs, further promoting their widespread adoption across diverse fields.

关键词： Flexible supercapacitors High-temperature tolerance Gel polymer electrolytes Electrode materials

Variation of carbon partitioning in newly expanded maize leaves and plant adaptive growth under extended darkness

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Journal of Integrative Agriculture 2021年第9期20卷 2360-2371页

作者： liANG Xiao-gui SHEN Si GAO Zhen ZHANG li zhao Xue ZHOU shun-li College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China School of Agricultural Sciences Jiangxi Agricultural UniversityNanchang 330045P.R.China Scientific Observation and Experimental Station of Crop High Efficient Use of Water in Wuqiao Ministry of Agriculture and Rural AffairsWuqiao 061802P.R.China Innovation Center of Agricultural Technology for Lowland Plain of Hebei Wuqiao 061802P.R.China

Plants must maintain a balance between their carbon(C)supply and utilization during the day–night cycle for continuous growth since C starvation often causes irreversible damage to crop *** is not well known how C fixation and allocation in the leaves of crops such as maize adapt to sudden environmental ***,to quantify primary C fixation and partitioning in photosynthetic maize leaves under extended darkness and to relate these factors to plant growth,maize seedlings were subjected to extended darkness(ED)for three successive days at the 6 th leaf fully expanded stage(V6).ED reduced plant growth and leaf chlorophyll levels but not the rate of net CO_2 *** a result of the reduction in photoassimilates,the accumulation of starch and total soluble carbohydrates(TSC)in mature leaves also decreased under ***,the percentage of the daily C fixation reserved in mature leaves *** transient C pools were largely composed of TSC and were mainly used for consumption by increased nocturnal respiration rather than for *** the days went on,both the amount of C accumulated and the percentage of the daily fixed C that was reserved in leaves decreased,which could be largely accounted for by the attenuated starch synthesis in all *** activities of ADPglucose pyrophosphorylase and soluble starch synthase decreased significantly over ***,this study concluded that both starch and TSC are involved in the coordination of the C supply and plant growth under a sudden C shortage but that they may be involved in different *** the ratio of reserved C to daily fixed C increased to maintain blade function under acute C starvation,both the amount and the proportion of C reserved in mature leaves decreased as plant growth continued in order to meet the growth demands of the plant.

关键词： maize starch total soluble carbohydrates carbon allocation extended darkness ongoing growth

Data management solutions based on the data distribution service communication model

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The Journal of China Universities of Posts and Telecommunications 2013年第4期20卷 127-132页

作者： li Zhi WANG zhao-shun DAI Gui-lan DAI Feng-jun School of Computer & Communication Engineering University of Science & Technology Beijing Research Institute of Information Technology Tsinghua University

This article presents a data management solution based on the data distribution service （DDS） communication model. The basic DDS communication model consists of a unidirectional data exchange where applications that publish data ＇push＇ the relevant data, which is updated to the local caches of co-located subscribers to the data [1]. DDS has no specified center node to forward data packets and maintain the communication data. This type of publish-subscribe （P/S） model presents integrity and consistency challenges in data management. Unlike peer-to-peer （P2P） distributed storage, DDS applications have a hard real-time environment and fewer data features, and the core problem is ensuring the integrity and consistency of data in distributed systems under this hard real-time environment. This article begins with a brief introduction of the communication model used by DDS, then analyzes persistent data management problems caused by such model, and provides an appropriate solution to these problems. This solution has been implemented in a prototype system of the real-time service bus （RTSB） of Tsinghua University.

关键词： DDS pub-sub consistency load balancing

Promoting role of an endophyte on the growth and contents of kinsenosides and flavonoids of Anoectochilus formosanus Hayata,a rare and threatened medicinal Orchidaceae plant

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第9期14卷 785-792页

作者： Fu-sheng ZHANG Ya-li LV Yue zhao shun-xing GUO Institute of Medicinal Plant Development Chinese Academy of Medical Sciences & Peking Union Medical College Modern Research Center for Traditional Chinese Medicine Shanxi University Department of Pharmaceutical Affairs Beijing Chao-Yang Hospital School of Traditional Chinese Material Medica Shenyang Pharmaceutical University

Anoectochilus formosanus,commonly known as "Jewel Orchid",is a Chinese folk medicine used to treat hypertension,diabetes,and heart *** existence of *** is currently threatened by habitat loss,human and animal consumption,*** highly potent medicinal activity of *** is due to its secondary metabolites,especially kinsenosides and *** orchid also has a unique mycorrhizal *** adult orchids rely on endophytes for mineral nutrition and have complex interactions with them,which are related to plant growth,yield and changes in secondary *** study investigated the promoting role of F-23 fungus (genus Mycena) on the biomass and contents of kinsenosides and flavonoids of *** in pot *** following were observed after 10 weeks of symbiotic cultivation:increased shoot height,shoot dry weight,and leaf numbers by 16.6%,31.3%,and 22.5%,respectively;increased contents of kinsenosides,isorhamnetin-3-O-β-D-rutinoside,and isorhamnetin-3-O-β-D-glucopyranoside by 85.5%,226.1%,and 196.0%,respectively;some hyphae in epidermal cells dyed red and/or reddish brown by safranine;and,significantly reduced number of starch grains in cortical ***,F-23 fungus significantly improved the kinsenoside and flavonoid contents of *** findings supported the reports that endophytes can alter the production of secondary metabolites in their plant hosts,although further physiological,genetic and ecological analyses are warranted.

关键词： Anoectochilus formosanus Endophyte Secondary metabolite Kinsenoside Flavonoid

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LNG低温过程控制先导式安全阀的设计开发

化工机械 2017年第1期44卷 54-56页

作者：李河张周卫汪雅红丁世文郭舜之赵丽兰州交通大学环境与市政工程学院甘肃中远能源动力工程有限公司

根据LNG低温高压系统安全减压技术特点,开发了先导式LNG安全阀。该阀用于控制变压、变温、变流量的LNG生产过程,使LNG安全装置结构更精巧,安全性更高。

关键词： LNG安全阀弹簧灵敏度压力

Resolving the developmental mechanisms of cardiac microthrombosis of SARS-CoV-2 based on single-cell transcriptome analysis

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Science China life Sciences 2025年第1期 103-115页

作者： Xizi Luo Nan Zhang Yuntao liu Beibei Du Xuan Wang Tianxu zhao Bingqiang liu Shishun zhao Jiazhang Qiu Guoqing Wang State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases Key Laboratory for Zoonosis Research of the Ministry of EducationCollege of Basic MedicineJilin University State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases Key Laboratory for Zoonosis Research of the Ministry of EducationCollege of Veterinary MedicineJilin University College of Mathematics Jilin University Bioinformatic Lab School of MathematicsShandong University Department of Cardiology China-Japan Union HospitalJilin University

The coronavirus disease 2019（COVID-19） outbreak caused by the severe acute respiratory syndrome coronavirus-2（SARS-CoV-2） developed into a global health emergency. Systemic microthrombus caused by SARS-CoV-2 infection is a common complication in patients with COVID-19. Cardiac microthrombosis as a complication of SARS-CoV-2 infection is the primary cause of cardiac injury and death in patietns with severe COVID-19. In this study, we performed single-cell sequencing analysis of the right ventricular free wall tissue from healthy donors,patients who died during the hypercoagulable period of characteristic coagulation abnormality（CAC）, and patients who died during the fibrinolytic period of CAC. We collected 61,187 cells enriched in 24 immune cell subsets and 13 cardiac-resident cell subsets. We found that in the course of SARS-CoV-2 infected heart microthrombus, MYO1EhighRASGEF1Bhighmonocyte-derived macrophages promoted hyperactivation of the immune system and initiated the extrinsic coagulation pathway by activating chemokines CCL3, CCL5. This series of events is the main cause of cardiac microthrombi following SARS-CoV-2 infection. In a SARS-CoV-2 infected heart microthrombus, excessive immune activation is accompanied by an increase in cellular iron content, which in turn promotes oxidative stress and intensifies intercellular competition. This induces cells to alter their metabolic environment, resulting in increased sugar uptake via the glycosaminoglycan synthesis pathway. In addition, high levels of reactive oxygen species generated by elevated iron levels promote increased endogenous malondialdehyde synthesis in a subpopulation of cardiac endothelial cells. This exacerbates endothelial cell dysfunction and exacerbates the coagulopathy process.

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A Note on Calculation of Threshold Resonance by the Method of Complex Scaling

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Chinese Physics Letters 1996年第4期13卷 241-244页

作者： zhao Mei-shan XIE Xi-shun The Janies Franck Institute The University of ChicagoChicagoIllinois 60637USA Department of Physics University of MinnesotaMinneapolisMinnesota 55455USA Department of Physics Southeastern UniversityNanjing210096

A new approach to threshold resonance calculation by the complex scaling method is *** to scattering over a model potential barrier is presented and compared to a direct quantum scattering calculation.

关键词： calculation. scaling quantum

Wear response of metastable b-type Ti–25Nb–2Mo–4Sn alloy for biomedical applications

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Rare Metals 2015年第8期34卷 564-568页

作者： shun Guo Qi Zheng Xiu-li Hou Xiao-Nong Cheng Xin-Qing zhao Institute for Advanced Materials Jiangsu University School of Materials Science and Engineering Beihang University

The wear response of a newly developed metastable b-type Ti–25Nb–2Mo–4Sn(abbreviated as Ti-2524) alloy was investigated and compared with that of(a+b)-type Ti–6Al–4V alloy. Experimental results show that solution-treated(ST) Ti-2524 specimen has the lowest wear rate due to the combined effects of excellent ductility and lubricative Nb2O5. Although similar Nb2O5 forms on the surface of the cold rolled plus annealed(CRA) Ti-2524 specimen, the beneficial effect of Nb2O5 on the wear resistance is counteracted by the increase in wear rate caused by low elongation. Thus, the wear rate of the CRA Ti-2524 alloy is higher than that of ST Ti-2524 *** for the ST Ti–6Al–4V alloy, no lubricative Nb2O5 forms on its worn surface owing to the absence of Nb. In addition, the ST Ti–6Al–4V alloy exhibits an elongation roughly similar to the CRA Ti-2524 specimen. Therefore,the ST Ti–6Al–4V specimen possesses a higher wear rate than the CRA Ti-2524 specimen.

关键词： Titanium alloy Wear response Low elastic modulus H