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A critical literature review of bioretention research for stormwater management in cold climate and future research recommendations

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 23-37页

作者： Hannah Kratky zhan li Yijun chen chengjin Wang Xiangfei li Tong Yu Department of Civil and Environmental Engineering University of Alberta Edmonton Alberta T6G 1H9 Canada City Planning City of Edmonton Edmonton Alberta T5J 0J4 Canada

Bioretention is a popular best management practice of low impact development that el/ecUvely restores urban hydrologic characteristics to those ofpredevelopment and improves water quality prior to conveyance to surface waters. This is achieved by utilizing an engineered system containing a surface layer of mulch, a thick soil media often amended with a variety of materials to improve water oualitv, a variety of vegetation, and underdrains, depending on the surrounding soil *** systems have been studied quite extensively for warm climate applications, but ctata strongly supporting their long-tema efficacy and application in cold climates is sparse. Although it is apparent that biorelention is an effective stormwater management system, its design in cold climate needs further research. Existing cold climate research has shown that coarser media is required to prevent concrete frost from forming. For spring, summer and fall seasons, if sufficient permeability exists to drain the system prior to freezing, peak flow and volume reduction can be maintained. Additionally. contaminants that are removed via filtration are also not impacted by cold climates. In contrary, dissolved contaminants, nutrients, and organics are significantly more variable in their ability to be removed or degraded via bioretention in colder temperatures. Winter road maintenance salts have been shown to negatively impact the removal of some contaminants and positively impact others, while their effects on properly selected vegetation or bacteria health are also not well understood. Research in these water quality aspects has been inconsistent and therefore requires further study.

关键词： Bioretention Cold climate Low impact development Stormwater

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高抗紫外线玻璃钢保护涂料的研制

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中国涂料 2018年第4期33卷 51-55页

作者：高旭曾健陈战利谭蓉刘俊峰陕西省电力公司西安710054 西安天元化工有限责任公司西安710075 中国能源建设集团陕西省电力设计院有限公司西安710054 西安交通大学西安710048

阐述了高抗紫外线玻璃钢保护涂料用丙烯酸的合成机理及合成工艺,并用于制备涂料,进行了性能检测。探索了丙烯酸树脂的玻璃化温度、分子量、n(—NCO)/n(—OH)比值、颜基比、紫外线吸收剂等因素对涂膜性能的影响。

关键词：高抗紫外线玻璃钢保护涂料

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Equilibrator-based measurements of dissolved methane in the surface ocean using an integrated cavity output laser absorption spectrometer

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Acta Oceanologica Sinica 2015年第6期34卷 34-41页

作者： li Yuhong zhan liyang zhanG Jiexia chen liqi Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration Third Institute of Oceanography State Oceanic Administration

A new off-axis integrated cavity output spectroscopy （ICOS） is coupled to Weiss equilibrator for continuous high- resolution dissolved methane measurement in the surface ocean. The time constant for the equilibrator in freshwater at room temperature is determined via dis-equilibration and re-equilibration experiments. The constant for methane is about 40 min. The system is calibrated using a standard gas of 3.980×10-6, and the precision of the ICOS for methane is 0.07%. This system is equipped onboard to measure the spatial distribution in methane concentrations of South Yellow Sea （SYS） along the cruise track from Shanghai to Qingdao. Result shows that the methane concentration varies from 2.79 to 36.36 nmol/L, reveals a significant pattern of methane source in SYS, and a distinct decreasing trend from south to north. The peak value occurs at the coast area outside mouth of the Changjiang River, likely to be affected by the Changjiang diluted water mass dissolving a large amount of rich in methane. Moreover, all the surface waters are oversaturated, air-to-sea fluxes range from 98.59 to 5 485.35 μmol/（m2·d）（average value （1 169.74±1 398.46） μmol/（m2·d））, indicating a source region for methane to the atmosphere. Key words： methane, equilibrator, off-axis integrated cavity output spectroscopy （ICOS）, South Yellow Sea

关键词： methane equilibrator off-axis integrated cavity output spectroscopy (ICOS) South Yellow Sea

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外周血T淋巴细胞亚群和基质金属蛋白酶-9可预测慢性心力衰竭发生肺部感染

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内科急危重症杂志 2021年第6期27卷 457-461页

作者：方圆许欣婷张瑶刘玲莉吴朔陈丽展空军军医大学第一附属医院呼吸内科陕西西安710000 西安国际医学中心医院胸科医院呼吸内科陕西西安710000

目的:探讨外周血T淋巴细胞亚群和基质金属蛋白酶-9(MMP-9)水平在慢性心力衰竭合并肺部感染患者中的变化情况。方法:选择2017年1月-2019年6月空军军医大学第一附属医院治疗的慢性心力衰竭患者360例,根据检查结果分为感染组(156例)和未感... 详细信息

目的:探讨外周血T淋巴细胞亚群和基质金属蛋白酶-9(MMP-9)水平在慢性心力衰竭合并肺部感染患者中的变化情况。方法:选择2017年1月-2019年6月空军军医大学第一附属医院治疗的慢性心力衰竭患者360例,根据检查结果分为感染组(156例)和未感染组(204例),比较2组实验室检查指标;多因素logistic回归分析慢性心力衰竭患者合并肺部感染的危险因素;Spearman相关性分析左心室射血分数值(LVEF)、左心室舒张末期内径(LVEDD)、N末端脑钠肽(NT-proBNP)与T淋巴细胞亚群、MMP-9间的相关性;通过受试者工作特征(ROC)曲线探讨T淋巴细胞亚群及MMP-9对评估慢性心力衰竭患者发生肺部感染的最佳临界值。结果:感染组白细胞计数、LVEDD、NT-proBNP、MMP-9水平和CD8^(+)T淋巴细胞比例高于未感染组,而LVEF、CD4^(+)T淋巴细胞比例和CD4^(+)/CD8^(+)比值显著低于未感染组(P均<0.05)。LVEF<46.00%、LVEDD≥53.50 mm、NT-proBNP≥580.00 pg/mL、MMP-9≥155.00μg/L、CD4^(+)T淋巴细胞<28.00%、CD8^(+)T淋巴细胞≥21.00%和CD4^(+)/CD8^(+)<1.35为慢性心力衰竭患者合并肺部感染的独立危险因素(P均<0.05)。患者CD4^(+)T淋巴细胞比例及CD4^(+)/CD8^(+)比值与LVEF呈正相关;与LVEDD和NT-proBNP水平呈负相关(P均<0.05),MMP-9水平和CD8^(+)T淋巴细胞与LVEF呈负相关;与LVEDD和NT-proBNP水平呈正相关(P<0.05)。MMP-9、CD4^(+)/CD8^(+)比值预测慢性心力衰竭患者发生肺部感染的最佳临界值分别为161.27μg/L、1.41。结论:合并肺部感染的慢性心力衰竭患者免疫功能下降,MMP-9水平升高,T淋巴细胞亚群和MMP-9的水平变化能在一定程度上反映心功能状态和疾病严重程度,并可用作预测肺部感染发生的辅助指标。

关键词： T淋巴细胞亚群基质金属蛋白酶-9 慢性心力衰竭肺部感染

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肺泡灌洗对肺脓肿患者肺表面活性蛋白A与高迁移率蛋白1水平的影响分析

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现代生物医学进展 2018年第21期18卷 4069-4072页

作者：张艳张瑶陈丽展吴朔薛慧君解放军空军军医大学第一附属医院呼吸与危重症医学科陕西西安710032

目的:探讨肺泡灌洗对肺脓肿患者肺表面活性蛋白A(SPA)与高迁移率蛋白1(HMGA1)水平的影响。方法:采用回顾性、随机抽样方法,选取2014年2月-2017年6月我院诊治的120例肺脓肿患者,根据治疗方法分成观察组、对照组,每组各60例,对照组给予常... 详细信息

目的:探讨肺泡灌洗对肺脓肿患者肺表面活性蛋白A(SPA)与高迁移率蛋白1(HMGA1)水平的影响。方法:采用回顾性、随机抽样方法,选取2014年2月-2017年6月我院诊治的120例肺脓肿患者,根据治疗方法分成观察组、对照组,每组各60例,对照组给予常规治疗,观察组在对照组的基础上进行肺泡灌洗治疗,疗程4周。比较两组的临床有效率、治疗前后肺功能、血清SPA和HMGA1水平的变化。结果:治疗后,观察组总有效率(98.3%)显著高于对照组(88.3%)(P<0.05);两组的FEV1、PaO_2均较治疗前显著升高(P<0.05),且观察组以上指标均显著高于对照组(P<0.05);两组患者血清SPA、HMGA1水平均较治疗前显著降低(P<0.05),且观察组以上指标均显著低于对照组(P<0.05)。结论:肺泡灌洗可有效提高肺脓肿的临床治疗效果,显著改善患者肺功能和血气状态,可能与降低患者血清SPA与HMGA1水平有关。

关键词：肺泡灌洗肺脓肿肺表面活性蛋白A 高迁移率蛋白1

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The Gevrey smoothing effect for the spatially inhomogeneous Boltzmann equations without cut-off

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Science China Mathematics 2022年第3期65卷 443-470页

作者： Hua chen Xin Hu Wei-Xi li Jinpeng zhan School of Mathematics and Statistics Wuhan UniversityWuhan 430072China Computational Science Hubei Key Laboratory Wuhan UniversityWuhan 430072China Department of Mathematics School of ScienceWuhan University of TechnologyWuhan 430070China

In this article we study the Gevrey regularization effect for the spatially inhomogeneous Boltzmann equation without angular *** equation is partially elliptic in the velocity direction and degenerates in the spatial *** consider the nonlinear Cauchy problem for the fluctuation around the Maxwellian distribution and prove that any solution with mild regularity will become smooth in the Gevrey class at positive time with the Gevrey index depending on the angular *** proof relies on the symbolic calculus for the collision operator and the global subelliptic estimate for the Cauchy problem of the linearized Boltzmann operator.

关键词： Boltzmann equation Gevrey regularity subelliptic estimate non cut-off symbolic calculus

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Merging bound states in the continuum in an open acoustic resonator

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun Huang Bin Jia Artem S.Pilipchuk Sibo Huang chen Shen Almas F.Sadreev Yong li Andrey E.Miroshnichenko School of Physics and Electronic Sciences East China Normal University Institute of Acoustics Tongji University L.V.Kirensky Institute of Physics Department of Mechanical Engineering Rowan University School of Engineering and Technology University of New South Wales at Canberra

Bound states in the continuum （BICs） are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and Friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional to ΔL-4,whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective nonHermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of Fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

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Dynamic evolution of Co species and morphological reconstruction on Co-N-C during the nitrate reduction reaction in neutral solution

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Nano Research 2025年第1期18卷 164-172页

作者： Yuanlin Fu Xiaoting Yang Ya Yu Kang Zhou Xiaoyang Ye Aoxiang zhang Xiaojiao Hou Bingbing chen Fuqiang Fan Yuhang li Yu Fu Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819China Department of Physical Education Shen Yang Institute of Science and TechnologyShenyang 110167China Sungrow Power Supply Co. Ltd.Hefei 230088China

The electrochemical nitrate reduction reaction(eNO_(3)^(-)RR)is considered an effective approach for converting nitrate-containing wastewater to *** adsorption and activation of NO_(3)^(-)is the critical step for many materials and the high energy barrier inhibits the continuation of the reduction *** Co nanoparticles encapsulated in the carbon layer we prepared spontaneously react with NO_(3)^(-)and the resulting Co^(2+)is then reduced by electroreduction to Co^(0),which circulates *** resulted in overcoming the energy input required for NO_(3)^(-)adsorption and conversion,thereby increasing the catalytic *** the same time,the morphology of the catalyst reconstructed from a dodecahedron to an interwoven nanosheet structure and the increased surface area also gives it better *** obtained Co(OH)_(2)@Co-N-C has an excellent eNO_(3)^(-)RR of 2774.7μg·h^(-1)·cm^(-2)with a Faraday efficiency of 81.4%in neutral *** the same time,the material-modified electrode can run stably for more than 100 *** work provides a new idea for the design of Co-based catalysts for eNO_(3)^(-)RR.

关键词： electrochemical nitrate reduction reaction Co-based catalyst dynamic evolution of Co species morphological reconstruction

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Solitons in nonlinear systems and eigen-states in quantum wells

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Chinese Physics B 2019年第1期28卷 257-266页

作者： li-chen Zhao zhan-Ying Yang Wen-li Yang School of Physics Northwest UniversityXi’an 710069China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi’an 710069China Institute of Modern Physics Northwest UniversityXi’an 710069China

We study the relations between solitons of nonlinear Schro¨dinger equation and eigen-states of linear Schro¨dinger equation with some quantum wells. Many different non-degenerated solitons are re-derived from the eigen-states in the quantum wells. We show that the vector solitons for the coupled system with attractive interactions correspond to the identical eigen-states with the ones of the coupled systems with repulsive interactions. Although their energy eigenvalues seem to be different, they can be reduced to identical ones in the same quantum wells. The non-degenerated solitons for multi-component systems can be used to construct much abundant degenerated solitons in more components coupled ***, we demonstrate that soliton solutions in nonlinear systems can also be used to solve the eigen-problems of quantum wells. As an example, we present the eigenvalue and eigen-state in a complicated quantum well for which the Hamiltonian belongs to the non-Hermitian Hamiltonian having parity–time symmetry. We further present the ground state and the first exited state in an asymmetric quantum double-well from asymmetric solitons. Based on these results, we expect that many nonlinear physical systems can be used to observe the quantum states evolution of quantum wells, such as a water wave tank, nonlinear fiber, Bose–Einstein condensate, and even plasma, although some of them are classical physical systems. These relations provide another way to understand the stability of solitons in nonlinear Schro¨dinger equation described systems, in contrast to the balance between dispersion and nonlinearity.

关键词： non-degenerated soliton eigen-states quantum well nonlinear Schrodinger equation

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PVC/PVAF热塑性弹性体的制备

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特种橡胶制品 2004年第6期25卷 9-12页

作者：刘赞陈占勋孙丽朋赵磊青岛科技大学橡塑材料与工程教育部重点实验室山东青岛266042

采用机械共混法制备PVC/PVAF弹性体。对聚合物的质量配比,增塑剂的用量以及增塑剂的配合使用对体系性能的影响进行研究,并就填料对体系的影响进行了考察。结果表明,通过不同的聚合物质量配比,增塑剂的选择以及不同填料的选用,可制得不... 详细信息

采用机械共混法制备PVC/PVAF弹性体。对聚合物的质量配比,增塑剂的用量以及增塑剂的配合使用对体系性能的影响进行研究,并就填料对体系的影响进行了考察。结果表明,通过不同的聚合物质量配比,增塑剂的选择以及不同填料的选用,可制得不同性能的热塑性弹性体。

关键词：聚氯乙烯聚乙烯醇共聚物增塑剂热塑性弹性体

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