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Passive daytime radiative cooling coatings with renewable self-cleaning functions

Chinese Chemical Letters 2024年第2期35卷 257-262页

作者： Qian Wu yubo cui Guifeng Xia Jinlong Yang Shuming Du Xinhong Xiong Li Yang Dong Xu Xu Deng Jiaxi cui Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute (Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Beijing Key Laboratory of Power Generation System Functional Material CHN Energy New Energy Technology Research Institute Ltd.Beijing 102209China Institute for Advanced Study Chengdu UniversityChengdu 610106China

Passive daytime radiative cooling(PDRC)technology is emerging as one of the most promising solutions to the global problem of spacing cooling,but its practical application is limited due to reduced cooling effectiveness caused by daily wear and tear,as well as dirt *** tackle this problem,we report a novel strategy by introducing a renewable armor structure for prolonging the anti-fouling and cooling effectiveness properties of the PDRC *** armor structure is designed by decorating fluorinated hollow glass microspheres(HGM)inside rigid resin composite *** HGM serve triple purposes,including providing isolated cavities for enhanced solar reflectance,reinforcing the matrices to form robust armored structures,and increasing thermal *** the coatings are worn,the HGM on the surface expose their concave cavities with numerous hydrophobic fragments,generating a highly rough surface that guarantee the superhydrophobic *** coatings show a high sunlight reflectance(0.93)and thermal emittance(0.94)in the long-wave infrared window,leading to a cooling of 5℃ below ambient temperature under high solar flux(∼900 W/m^(2)).When anti-fouling functions are reduced,they can be regenerated more than 100 cycles without compromising the PDRC function by simple wearing ***,these coatings can be easily prepared using a one-pot spray method with low-cost materials,exhibit strong adhesion to a variety of substrates,and demonstrate exceptional environmental ***,we anticipate their immediate application opportunities for spacing cooling.

关键词： Superhydrophobic Passive radiative cooling Wearing Regeneration Glass resin armor

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Performance of wastewater sludge ecological stabilization

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Journal of Environmental Sciences 2008年第4期20卷 385-389页

作者： cui yubo SUN Tieheng ZHAO Lihui JIANG Tingliang ZHANG Liping Institute of Applied Ecology Chinese Academy of Science Shenyang 110016 China Department of Environmental Engineering Jilin Architectural and Civil Engineering Institute Changchun 130021 China

In this article, wastewater sludge ecological stabilization （WWSES） was presented for sludge dewatering, mineralization, and stabilization, as well as for percolate treatment. Two years of pilot scale experimental results indicated that sludge volatile solid, Wiphenyltetrazolium chloride （TTC）-dehydrogenase activity （DHA）, and moisture content as indicators showed the process and degree of sludge stabilization. The observation on dewatering process showed that dried sludge reached a content of 20%-50% total solid after two years of system operation. Sludge TTC-DHA in the first year was obviously lower than that of the second year, and TTC-DHA tended to decrease with an increase in the drying time of the sludge. Total nitrogen, total phosphorus, and organic contents of sludge decreased gradually from the top to the bottom of dried sludge layer. In comparison with natural stands on stands treated with sewage sludge, individual shoot was significantly higher, and coarse protein, coarse fat, and coarse fiber contents in reed roots, stems, and leaves in the system were higher than that of wild reed, especially coarse protein contents of reed roots in the system （7.38%） were obviously higher than that of wild reeds （3.29%）.

关键词： constructed wetland ecological stabilization treatment and disposal wastewater sludge

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FeCl_(3)改性芦苇秸秆生物碳去除水中硝酸盐的研究

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当代化工研究 2024年第3期 173-175页

作者：李徽崔玉波匡珮菁大连民族大学环境与资源学院辽宁116600

为了减少NO_(3)^(-)N污染对水环境和人体健康的危害,寻求经济有效的控制水体中NO_(3)^(-)N污染的技术至关重要。本研究利用湿地植物芦苇为原材料,在不同温度下烧制制备生物碳。同时采用FeCl_(3)对生物碳进行不同方法的改性提高其对水中N... 详细信息

为了减少NO_(3)^(-)N污染对水环境和人体健康的危害,寻求经济有效的控制水体中NO_(3)^(-)N污染的技术至关重要。本研究利用湿地植物芦苇为原材料,在不同温度下烧制制备生物碳。同时采用FeCl_(3)对生物碳进行不同方法的改性提高其对水中NO3-N的吸附性能。结果表明,碳化温度600℃,烧制时间2h,碱性FeCl_(3)溶液浸泡24h的最佳条件下形成的生物碳(BC600)对NO_(3)^(-)N的吸附能力最强,达到1.97mg-N/L。SEM进行表面形态分析可得,BC600孔隙中加载了大量的氧化铁,可有效去除水中的NO_(3)^(-)N。本研究可为农业废秸秆的综合利用和水中硝酸盐的脱除提供了理论依据。

关键词：硝酸盐改性生物碳吸附

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Circulating fluidized bed biological reactor for nutrients removal

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Frontiers of Environmental Science & Engineering 2008年第3期2卷 349-353页

作者： yubo cui Hongbo LIU Chunxue BAI Department of Environmental Engineering Dalian Nationalities UniversityDalian 116600China School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China Dalian Development Zone Drainage Management Ltd. Dalian 116600China

A new biological nitrogen removal process,which is named herein“The circulating fluidized bed bio-reactor(CFBBR)”,was developed for simultancous removal of nitrogen and organic *** process was composed of an anaerobic bed(Riser),aerobic bed(Downer)and connecting *** and nitrified liquid from the acrobic bed enters the anaerobic bed from the bottom of the anaerobic bed,completing the removal of nitrogen and organic *** system performance under the conditions of different inflow loadings and nitrified liquid recirculation rates ranging from 200% to 600% was *** a technical and economic point of view,the optimum nitrifed liquid recirculation rate was 400%.With a shortest total retention time of 2.5 h(0.8 h in the anaerobic bed and 1.5 h in the aerobic bed)and a nitified liquid rocir-culation rate of 400% based on the influent flow rate,the average removal efficiencies of total nitrogen(TN)and sol-uble chemical oxygen demand(SCOD)were found to be 88% and 95%,*** average efluent concentra-tions of TN and SCOD were 3.5 mg/L and 16 mg/L,*** volatile suspended solid(VSS)concentra-tion,nitrifcation rate and denitrification rate in the system were less than 1.0 g/L,0.0260.1 g NH_(4)^(+)-Ng VSS-d,and 0.016-0.074g NO_(x)^(-)-Ng VSS-d,respectively.

关键词： circulating fluidized bed nitrification denitrification nitrified liquid recirculation rate

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Association of DNA methylation/demethylation with the functional outcome of stroke in a hyperinflammatory state

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Neural Regeneration Research 2024年第10期19卷 2229-2239页

作者： yubo Wang Ling Zhang Tianjie Lyu Lu cui Shunying Zhao Xuechun Wang Meng Wang Yongjun Wang Zixiao Li Vascular Neurology Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina National Center for Healthcare Quality Management in Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Chinese Institute for Brain Research BeijingChina Research Unit of Artificial Intelligence in Cerebrovascular Disease Chinese Academy of Medical SciencesBeijingChina Beijing Engineering Research Center of Digital Healthcare for Neurological Diseases BeijingChina

Inflammation is closely related to stroke prognosis, and high inflammation status leads to poor functional outcome in stroke. DNA methylation is involved in the pathogenesis and prognosis of stroke. However, the effect of DNA methylation on stroke at high levels of inflammation is unclear. In this study, we constructed a hyperinflammatory cerebral ischemia mouse model and investigated the effect of hypomethylation and hypermethylation on the functional outcome. We constructed a mouse model of transient middle cerebral artery occlusion and treated the mice with lipopolysaccharide to induce a hyperinflammatory state. To investigate the effect of DNA methylation on stroke, we used small molecule inhibitors to restrain the function of key DNA methylation and demethylation enzymes. 2,3,5-Triphenyltetrazolium chloride staining, neurological function scores, neurobehavioral tests, enzyme-linked immunosorbent assay, quantitative reverse transcription PCR and western blot assay were used to evaluate the effects after stroke in mice. We assessed changes in the global methylation status by measuring DNA 5-mc and DNA 5-hmc levels in peripheral blood after the use of the inhibitor. In the group treated with the DNA methylation inhibitor, brain tissue 2,3,5-triphenyltetrazolium chloride staining showed an increase in infarct volume, which was accompanied by a decrease in neurological scores and worsening of neurobehavioral performance. The levels of inflammatory factors interleukin 6 and interleukin-1 beta in ischemic brain tissue and plasma were elevated, indicating increased inflammation. Related inflammatory pathway exploration showed significant overactivation of nuclear factor kappa B. These results suggested that inhibiting DNA methylation led to poor functional outcome in mice with high inflammation following stroke. Further, the effects were reversed by inhibition of DNA demethylation. Our findings suggest that DNA methylation regulates the inflammatory response in stroke

关键词： DNA demethylation DNA methylation DNMT3A functional outcome hyperinflammatory state interleukin neuroinflammation stroke TET2

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Reward Function Design Method for Long Episode Pursuit Tasks Under Polar Coordinate in Multi-Agent Reinforcement Learning

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Journal of Shanghai Jiaotong university(Science) 2024年第4期29卷 646-655页

作者： DONG yubo cui Tao ZHOU Yufan SONG Xun ZHU Yue DONG Peng School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai200240China Beijing Institute of Electronic System Engineering Beijing100854China

Multi-agent reinforcement learning has recently been applied to solve pursuit ***,it suffers from a large number of time steps per training episode,thus always struggling to converge effectively,resulting in low rewards and an inability for agents to learn *** paper proposes a deep reinforcement learning(DRL)training method that employs an ensemble segmented multi-reward function design approach to address the convergence problem mentioned *** ensemble reward function combines the advantages of two reward functions,which enhances the training effect of agents in long ***,we eliminate the non-monotonic behavior in reward function introduced by the trigonometric functions in the traditional 2D polar coordinates observation *** results demonstrate that this method outperforms the traditional single reward function mechanism in the pursuit scenario by enhancing agents’policy scores of the *** ideas offer a solution to the convergence challenges faced by DRL models in long episode pursuit problems,leading to an improved model training performance.

关键词： multi-agent reinforcement learning deep reinforcement learning(DRL) long episode reward function

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Biological Toxicity of Sewage Sludge Stabilized by Reed Bed on the Luminescent Bacteria

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Journal of Geoscience and Environment Protection 2015年第1期3卷 1-6页

作者： Jiangang Li yubo cui Wanjun Zhang Yuying Dong Shuran Jia College of Environment and Resources Dalian Nationalities University Dalian China

With the expanding scale of urban wastewater treatment, the resulting excess sludge quantity is also growing. Excess sludge treatment and disposal has become an important part of the sewage treatment. Sludge itself is rich in essential nutrients of plant growth such as nitrogen and phosphorus, so it’s a good organic fertilizer;but it often also contains harmful substances such as heavy metals. If the sludge treatment is not good, it not only can bring secondary pollution to the environment, but also can cause the waste of resources. Luminescent bacteria tests are conducted in this research by comparing the effects on the absorption and transformation of toxic substances between traditional sludge drying bed and reed bed. The study finds that the biological toxicity of surface layer sludge either in reed bed or in traditional drying bed has little change with the seasons and maintains in low level. While the biological toxicity in the bottom of sludge has change with the seasons and achieves the lowest level in summer and fall, and the biological toxicity of sludge in reed bed is lower than that of traditional drying bed.

关键词： Reed Bed Activated Sludge Luminous Bacteria Biological Toxicity

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非铂类金属抗肿瘤药物的研究进展

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化学进展 2006年第1期18卷 107-113页

作者：徐刚崔玉波崔凯苟少华南京大学配位化学国家重点实验室南京210093

自从顺铂被发现具有抗肿瘤活性以来,金属抗肿瘤药物得到了飞速的发展,一些非铂类金属的化合物也相继被发现具有一定的抗肿瘤活性。与铂类金属药物相比,非铂类金属抗肿瘤药物的发展相对缓慢,但也取得了一定的成果。本文主要就一些已经进... 详细信息

自从顺铂被发现具有抗肿瘤活性以来,金属抗肿瘤药物得到了飞速的发展,一些非铂类金属的化合物也相继被发现具有一定的抗肿瘤活性。与铂类金属药物相比,非铂类金属抗肿瘤药物的发展相对缓慢,但也取得了一定的成果。本文主要就一些已经进入临床试验阶段的非铂类抗肿瘤药物的研究进展作一简述。

关键词：非铂类金属化合物抗肿瘤金属配合物

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人工湿地污泥处理技术研究进展

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吉林农业大学学报 2017年第1期39卷 1-9页

作者：崔玉波大连民族大学环境与资源学院大连116600

人工湿地污泥处理技术是利用植物、污泥微生物和自然力对活性污泥法处理城市污水的剩余污泥进行脱水与稳定。该技术具有运行费用低、不需要添加化学药剂、终产物可以安全处置或农用等优点。文中介绍了人工湿地污泥处理技术的概念、工作... 详细信息

人工湿地污泥处理技术是利用植物、污泥微生物和自然力对活性污泥法处理城市污水的剩余污泥进行脱水与稳定。该技术具有运行费用低、不需要添加化学药剂、终产物可以安全处置或农用等优点。文中介绍了人工湿地污泥处理技术的概念、工作原理、脱水和稳定效果、温室气体排放以及设计和运行中常见的问题。在人工湿地处理污泥过程中,污泥脱水是由植物蒸发蒸腾、污泥渗滤和矿化作用协同完成的;污泥中有机质和氮磷等物质的转化和去除受进泥性质、运行参数和气象条件等因素影响较大。湿地植物芦苇能够保持足够的渗透系数并通过蒸腾作用去除污泥中的毛细水,在污泥脱水和污泥稳定中发挥着显著作用。由于人工湿地技术处理污泥工程实践时间相对较短,运行时通常出现一些问题,常见问题包括芦苇的长势不良、湿地中的液态厌氧污泥含水率过高、最后的稳定期污泥含水率过低等,需要在实践中予以解决。

关键词：人工湿地芦苇床剩余污泥污泥处理污泥稳定

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低温下ABR酸化反应器的运行效果及微生物活性研究

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环境工程学报 2007年第2期1卷 49-53页

作者：崔玉波朱宝英大连民族学院环境工程系大连116600

考察了低温对四格室ABR酸化反应器性能的影响。在水力停留时间3h，进水COD浓度230～300mg／L，TP浓度1．59～1．93mg／L，NH4-N浓度23～28mg／L，进水温度8-15℃，酸化出水温度3～9℃条件下，溶解性COD最高去除率达56％。沿流程方向反... 详细信息

考察了低温对四格室ABR酸化反应器性能的影响。在水力停留时间3h，进水COD浓度230～300mg／L，TP浓度1．59～1．93mg／L，NH4-N浓度23～28mg／L，进水温度8-15℃，酸化出水温度3～9℃条件下，溶解性COD最高去除率达56％。沿流程方向反应器前面2个格室的COD净去除量占总去除量的64％，明显高于后面2个格室，去除率也有相似特征。反应器不同格室的挥发性悬浮固体（VSS）浓度也明显不同，前面格室的VSS高于后面格室。造成不同格室COD降解差异的主要原因为生物量不同所致，高生物量对应着高COD去除量和去除率。沿水流方向不同格室中微生物INT脱氢酶活性（DHA）呈递减趋势，前面2个格室的微生物活性明显高于后2个格室。营养物水平不同，微生物活性不同，高营养对应着高活性，高活性对应着高COD去除率。

关键词：厌氧折流板反应器酸化低温脱氢酶活性

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