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Carbon nanotube-based photothermal membrane for efficient cold air heating and removal of particulate matter and airborne bacteria

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Green Carbon 2024年第1期2卷 101-108页

作者： Weichao Dong Lina Huang Xiangju Song Yan Zhang Mengke Liu Zhenzhen Ren long pang Hui Peng Heqing Jiang Key Laboratory of Biobased Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China School of Material Science and Engineering Henan Polytechnic UniversityJiaozuo 454003China Shandong Energy Institute Qingdao 266101China Qingdao New Energy Shandong Laboratory Qingdao 266101China University of Chinese Academy of Sciences Beijing 101408China College of Chemistry and Pharmaceutical Engineering HuangHuai UniversityZhumadian 463000China

Indoor heating results in high energy consumption and severe atmospheric *** the development of solar air heaters provides a sustainable route for indoor thermal comfort,such heaters still face challenges in terms of adequate heat exchange and filtering of atmospheric *** by solar-driven interfacial evaporation,we propose a multifunctional carbon nanotube-based photothermal membrane for efficient cold air heating and purification via *** nanotubes endow the membrane with high light absorption and thermal conversion capabilities,thereby sufficiently heating the approaching cold *** the hierarchical structure formed by phase inversion,the thin upper skin of the composite membrane intercepts micropollutants via the size-sieving effect,whereas the finger-like pores and interpenetrating macrovoids inside the membrane ensure that the heated clear air passes through quickly.A proof-of-principle experiment indicated a cold airflow of 1 L/min across the membrane,yielding a temperature increase of ca.37℃ as well as a PM 2.5 rejection always higher than 93%.Further antibacterial experiments demonstrated that the membrane effectively removed airborne *** multifunctional carbon nanotube-based photothermal membrane with specific microstructures not only improves the indoor living quality but also provides a sustainable development scheme to coordinate the relationship among energy utilization,building heating,and air purification.

关键词： Indoor heating Carbon nanotubes Multifunctional photothermal membrane Hierarchical structure Particulate matter

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大学生服装消费心理分析

西部皮革 2024年第16期46卷 38-40页

作者：庞龙桂林电子科技大学

文章旨在探讨大学生服装消费心理的特点及其影响因素。通过文献研究，文章总结了大学生服装消费心理的特点及其影响因素。大学生在服装消费行为中表现出追求性价比和独特个性化，追求时尚品牌和符号化表达，喜欢自由便捷的网络化消费，... 详细信息

文章旨在探讨大学生服装消费心理的特点及其影响因素。通过文献研究，文章总结了大学生服装消费心理的特点及其影响因素。大学生在服装消费行为中表现出追求性价比和独特个性化，追求时尚品牌和符号化表达，喜欢自由便捷的网络化消费，容易出现冲动消费、盲目攀比和从众消费，存在非理性消费心理等特点。影响这些心理特点的原因包括个人、家庭、社会、市场等多个方面。文章还提出了针对大学生服装消费心理的市场应用措施，包括深化服装多样性、实施差异化价格战略、完善商品展示细节等。

关键词：服装消费心理市场应用

经Wiltse肌间入路长节段内固定联合椎板间有限减压治疗胸腰段爆裂骨折的临床疗效

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宁夏医科大学学报 2024年第9期46卷 945-949页

作者：吴龙翟鹏赵鑫庞龙李鹏宁夏医科大学总医院骨三科宁夏医科大学第一临床医学院银川750004 宁夏医科大学总医院麻醉与围术期医学科宁夏医科大学第一临床医学院银川750004

目的对比经Wiltse肌间入路长节段内固定联合椎板间有限减压与传统入路固定减压治疗胸腰段爆裂骨折的临床疗效。方法选择42例单节段胸腰段爆裂骨折手术患者,依据入路的不同将患者分为经Wiltse肌间入路组(n=20)及传统组(n=22),记录并比较... 详细信息

目的对比经Wiltse肌间入路长节段内固定联合椎板间有限减压与传统入路固定减压治疗胸腰段爆裂骨折的临床疗效。方法选择42例单节段胸腰段爆裂骨折手术患者,依据入路的不同将患者分为经Wiltse肌间入路组(n=20)及传统组(n=22),记录并比较两组患者手术时间、术中出血量等围术期指标;手术前后伤椎椎体前缘高度比和矢状位Cobb角的变化;术前及术后3个月神经功能恢复情况。结果经Wiltse肌间入路组患者的手术时间、术中出血量、术后引流量、术后住院时间、术后VAS评分均优于对照组(P均0.05)。结论在采取长节段椎弓根钉内固定减压治疗胸腰段爆裂骨折的患者中,与传统入路相比,经Wiltse肌间入路置钉联合有限减压具有手术时间短、出血少、保护椎旁肌、最大限度保留后方稳定结构的优势。

关键词： Wiltse肌间入路胸腰段爆裂骨折长节段椎弓根钉内固定有限减压

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水利工程管理现状与优化研究

海河水利 2024年第10期 55-58页

作者：庞金龙訾天亮中水北方勘测设计研究有限责任公司天津300222

水利工程管理是确保水利工程建设运行有效性和可持续性的重要环节。研究发现,当前水利工程管理存在管理体制不完善、信息共享不畅、协同联动不够紧密等问题。针对这些问题,提出了加强顶层设计、推动信息化建设、优化管理体制和加强协同... 详细信息

水利工程管理是确保水利工程建设运行有效性和可持续性的重要环节。研究发现,当前水利工程管理存在管理体制不完善、信息共享不畅、协同联动不够紧密等问题。针对这些问题,提出了加强顶层设计、推动信息化建设、优化管理体制和加强协同联动等对策。通过这些措施的实施,可以提升水利工程管理的效率和质量,实现水利工程的可持续运营。

关键词：水利工程管理优化策略管理体制

Determination of VOCs in groundwater at an industrial contamination site using a homemade low-density polyethylene passive difusion sampler

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Journal of Environmental Sciences 2013年第11期25卷 2338-2343页

作者： Xu Ma Zhiqiang Tan long pang Jingfu Liu State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

A home-made inexpensive passive diffusion bag （PDB） sampler, prepared by filling deionized water in low-density polyethylene （LDPE） tubes, was evaluated for volatile organic compounds （VOC） sampling in groundwater at industrial contamination sites. Impacts of environmentally relevant conditions on the sampling equilibration time and partitioning of VOCs between the sampler and the water sample were investigated. Sample salinity, agitation and temperature can influence the equilibration time, but generally sampling equilibration was obtained in 14 days under real field sampling of VOCs in groundwater. Both laboratory study and field testing in a contaminated site showed that the VOC concentrations in the developed sampler were equal to those in the water samples at equitibrium. Coupled with a purge and trap concentrator-gas chromatograph-mass spectrometer （P＆T-GC-MS）, the developed PDB sampler provided a low-cost sampling device for routine monitoring of VOCs in groundwater in wells, with LODs in the range of 2.9-10 μg/L. The proposed PDB was applied to determine VOCs in groundwater at an industrial contamination site, and the present results agreed well with those determined using conventional pump-and-sample monitoring. All the studied 13 VOCs were tested in the four wells in the industrial contamination sites, with their concentrations in the range of 12-73660 μg/L. In addition, while benzene and toluene were heavily contaminated up to a maximum concentration of 74000 μg/L and 6000 μg/L, respectively, 1,2,3-trichlorobenzene and bromobenzene had relatively low contamination levels （below 25 μg/L）.

关键词： equilibration time ground water passive sampling polyethylene diffusion bag volatile organic compounds

赣北与赣南地区典型中温温泉水文地球化学特征

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矿物岩石地球化学通报 2024年第3期43卷 521-532页

作者：施兴华白细民孙占学刘金辉叶海龙庞龙龙关燕鹤陈功新东华理工大学核资源与环境国家重点实验室南昌330013 东华理工大学水资源与环境工程学院南昌330013 江西省勘察设计研究院有限公司南昌330224 东华理工大学地球物理与测控技术学院南昌330013

为践行“双碳”目标,助力中国地热资源的可持续开发利用,本文采用同位素手段和多矿物平衡模拟法,研究了赣北的白岭温泉与赣南的汤湖温泉和白石温泉的水化学特征。结果表明,白岭温泉(85℃)为弱碱性HCO_(3)-Na型硅-氟水,其总溶解固体(TDS... 详细信息

为践行“双碳”目标,助力中国地热资源的可持续开发利用,本文采用同位素手段和多矿物平衡模拟法,研究了赣北的白岭温泉与赣南的汤湖温泉和白石温泉的水化学特征。结果表明,白岭温泉(85℃)为弱碱性HCO_(3)-Na型硅-氟水,其总溶解固体(TDS)含量、H_(2)SiO_(3)含量和主要离子浓度均低于汤湖温泉(89℃,弱碱性HCO_(3)-Na型硅-氟水)和白石温泉(85℃,弱碱性SO_(4)-HCO_(3)-Na型硅-氟水)。三个温泉虽均来源于大气降水,但汤湖温泉和白石温泉水的地下滞留时间更长,而白岭温泉的循环深度更大。白岭温泉和汤湖温泉的水岩作用强烈,均存在明显的氧漂移现象,而白石温泉则发生水气同位素交换作用,导致热水的δ^(18)O值降低。长石、方解石、石膏、黄铁矿的溶解和H_(2)S的氧化为温泉中主要离子来源。白岭温泉、汤湖温泉和白石温泉的平均热储温度分别为125、135和149℃,属于中温地热资源,其补给高程分别为1455、1790和1050 m。

关键词：中温温泉水化学特征水-岩相互作用同位素

An improved constant coefficient multiplication algorithm based on cascaded adder graph

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Science China(Information Sciences) 2013年第6期56卷 160-166页

作者： CHEN He QU XiuJie pang long YU JiYang long Teng School of Information and Electronics Beijing Institute of Technology School of Information Engineering Communication University of China The Electronic Engineering Technology Research Center of China Academy of Space Technology

In many digital signal processing algorithms,e.g.,digital filters,the multiplier coefficients are ***,it is possible to implement the multiplier using shifts,adders,and *** this work a new algorithm of constant coefficient multiplication with few adders and registers is *** approach is based on cascaded adder *** this paper all cascaded adder graph structures for any integer can be derived,and the analytical method for the number of register and adder occupation is *** comparison of occupied resources,the optimal adder graph can be ***,comparing with previous optimal algorithms,a design example for finite impulse response(FIR) filter confirms the validity and good engineering practicability of this algorithm.

关键词： constant coefficient multiplication cascaded adder graph finite impulse response(FIR) resource occupation adder-step

Hurricane damage assessment for residential construction considering the non-stationarity in hurricane intensity and frequency

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Acta Oceanologica Sinica 2016年第12期35卷 110-118页

作者： WANG Cao LI Quanwang pang long ZOU Aming ZHANG long Department of Civil Engineering Tsinghua University CCCC Highway Consultants CO. Ltd.

Natural hazards such as hurricanes may cause extensive economic losses and social disruption for civil structures and infrastructures in coastal areas, implying the importance of understanding the construction performance subjected to hurricanes and assessing the hurricane damages properly. The intensity and frequency of hurricanes have been reported to change with time due to the potential impact of climate *** this paper, a probability-based model of hurricane damage assessment for coastal constructions is proposed taking into account the non-stationarity in hurricane intensity and frequency. The nonhomogeneous Poisson process is employed to model the non-stationarity in hurricane occurrence while the non-stationarity in hurricane intensity is reflected by the time-variant statistical parameters(e.g., mean value and/or standard deviation), with which the mean value and variation of the cumulative hurricane damage are evaluated explicitly. The Miami-Dade County, Florida, USA, is chosen to illustrate the hurricane damage assessment method proposed in this paper. The role of non-stationarity in hurricane intensity and occurrence rate due to climate change in hurricane damage is investigated using some representative changing patterns of hurricane parameters.

关键词： hurricane damage assessment intensity frequency non-stationarity climate change

Rapid determination of atrazine in environmental water samples by a novel liquid phase microextraction

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Chinese Chemical Letters 2008年第1期19卷 89-91页

作者： Qing Xiang Zhou Guo Hong Xie long pang School of Chemistry and Environmental Sciences Henan Normal University Henan Key Laboratory for Environmental Pollution Control Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control Ministry of Education Xinxiang 453007 China College of Resources and Environment Henan Institute of Science and Technology Xinxiang 453003 China

A novel method was described for the rapid determination of atrazine using dispersive liquid phase microextraction in combination with high performance liquid chromatography （HPLC）. Possible impact parameters such as sample pH, extraction and disperser solvents, salting-out effect, and extraction time were investigated. The experimental results indicated that proposed method possessed an excellent analytical performance, The linear range, detection limit, and precision （R.S.D.） were 0.1- 50 ng mL- 1 （R2 = 0.9955）, 0.601 ng mL- 1 and 6,4%, respectively. The proposed method was validated with the real water samples, and the spiked recoveries were in the range of 69.9-89.8%, respectively. These results indicated that the established method with high enrichment factor, short extraction time was an excellent alternative for the routine analysis of atrazine in environmental samples. 2007 Qing Xiang Zhou. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Liquid phase microextraction Atrazine High performance liquid chromatography Water samples