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Case Studies of the Microphysical and Kinematic Structure of Summer Mesoscale Precipitation Clouds over the Eastern Tibetan Plateau

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Advances in Atmospheric Sciences 2024年第1期41卷 97-114页

作者： Shuo JIA Jiefan yang Hengchi LEI Key Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

Three cases of microphysical characteristics and kinematic structures in the negative temperature region of summer mesoscale cloud systems over the eastern Tibetan Plateau(TP)were investigated using x-band dual-polarization *** time-height series of radar physical variables and mesoscale horizontal divergence δderived by quasi-vertical profiles(QVPs)indicated that the dendritic growth layer(DGL,-20°C to-10°C)was ubiquitous,with large-value zones of K_(DP)(specific differential phase),Z_(dr)(differential reflectivity),or both,and corresponded to various dynamic fields(ascent or descent).Ascents in the DGL of cloud systems with vigorous vertical development were coincident with large-value zones of Z_(dr),signifying ice crystals with a large axis ratio,but with no obvious large values of K_(DP),which differs from previous *** is speculated that ascent in the DGL promoted ice crystals to undergo further growth before *** there was descent in the DGL,a high echo top corresponded to large values of K_(DP),denoting a large number concentration of ice crystals;but with the echo top descending,small values of K_(DP) *** is similar to previous results and reveals that a high echo top is conducive to the generation of ice *** ice particles fall to low levels(-10℃ to 0℃),they grow through riming,aggregation,or deposition,and may not be related to the kinematic *** is important to note that this study was only based on a limited number of cases and that further research is therefore needed.

关键词： Tibetan Plateau polarimetric variables microphysics dendritic growth layer kinematic structure aggregation riming

Clean air captures attention whereas pollution distracts:evidence from brain activities

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 5-15页

作者： Jianxun yang Yunqi Liu Berry van den Berg Susie Wang Lele Chen Miaomiao Liu Jun Bi State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing 210044China Nanjing Foreign Language School Nanjing 210008China Department of Experimental Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands Department of Social Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands School of Education Science Nantong UniversityNantong 226019China

Awareness of the adverse impact of air pollution on attention-related performance such as learning and driving is rapidly ***,there is still little known about the underlying neurocognitive *** an adapted dot-probe task paradigm and event-related potential(ERP)technique,we investigated how visual stimuli of air pollution influence the attentional allocation *** were required to make responses to the onset of a target presented at the left or right visual *** probable location of the target was forewarned by a cue(pollution or clean air images),appearing at either the target location(attention-holding trials)or the opposite location(attention-shifting trials).Behavioral measures showed that when cued by pollution images,subjects had higher response accuracy in attention-shifting *** analysis results revealed that after the cue onset,pollution images evoked lower N300 amplitudes,indicating less attentioncapturing effects of dirty *** the target onset,pollution cues were correlated with the higher P300 amplitudes in attention-holding trials but lower amplitudes in attention-shifting *** indicates that after visual exposure to air pollution,people need more neurocognitive resources to maintain attention but less effort to shift attention *** findings provide the first neuroscientific evidence for the distracting effect of air *** conclude with several practical implications and suggest the ERP technique as a promising tool to understand human responses to environmental stressors.

关键词： Air pollution Attention Disengagement Performance Event-related potential

Modulation doping of p-type Cu_(12)Sb_(4)S_(13)toward improving thermoelectric performance

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Journal of Materials Science & Technology 2024年第4期171卷 71-79页

作者： Khak Ho Lim Mingquan Li Yu Zhang Yue Wu Qimin Zhou Qingyue Wang xuan yang Pingwei Liu Wen-Jun Wang Ka Wai Wong Ka Ming Ng Yu Liu Andreu Cabot Institute of Zhejiang University-Quzhou Quzhou 324000China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310007China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Ostia Technologies Limited United Kingdom Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongChina ICREA Pg.Lluis Companys 23Barcelona 08010Spain Catalonia Energy Research Institute-IREC Sant Adria del BesosBarcelona 08930Spain

The commercial viability of thermoelectric(TE)devices relies heavily on two factors:cost reduction and efficiency *** this study,we first produce p-type Cu_(12)Sb_(4)S_(16-x)(x=0,3,4)using a low-temperature bottom-up approach and demonstrate Cu_(12)Sb_(4)S_(13)to show the best TE performance among the three tested ***,the TE energy conversion efficiency of Cu_(12)Sb_(4)S_(13)is further enhanced by optimizing its electronic band structure through the incorporation of small amounts of *** an optimal Te content of 5 mol%,more than a twofold increase in the TE figure of merit(zT)is *** gain insight into the mechanism of improvement on the transport properties of the mate-rial,we compare the interphase transport mechanism by incorporating nanodomains of different metals(Ag and Cu)into the Cu_(12)Sb_(4)S_(13)*** improved electrical conductivity obtained with Cu_(12)Sb_(4)S_(13)-Te nanocomposites is attributed to a charge flooding of the Cu_(12)Sb_(4)S_(13)*** contrast,excessive down-ward band-bending at the interphases of Ag/Cu metal-semiconductor drastically reduces the electrical ***,a weighted mobility(μw)analysis shows a dominant thermal activation of carri-ers in Cu_(12)Sb_(4)S_(13)-Te *** this material,a strong decrease in lattice thermal conductivity is also found,which is associated with a phonon-carrier scattering *** work shows the impor-tance of proper band-engineering in TE nanocomposites to decouple electrical and thermal transport to enhance TE performance,and the efficacy ofμw for electrical and thermal transport analysis.

关键词： Modulation doping Thermoelectric Interphase transport Charge flooding Phonon-carrier scattering

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燃料电池分析测量解决方案

流程工业 2024年第1期 30-31页

作者： dr.Jana Kalbacova HORIBA集团可替代能源系统业务开发部

燃料电池和电解槽催化剂层的质量对于实现良好性能和低成本至关重要。x射线荧光测量有助于在生产过程中精确、实时地监测催化剂的负载情况。燃料电池在实现“碳中和”的道路上发挥着重要作用:它们为满足道路交通中日益严格的二氧化碳排... 详细信息

燃料电池和电解槽催化剂层的质量对于实现良好性能和低成本至关重要。x射线荧光测量有助于在生产过程中精确、实时地监测催化剂的负载情况。燃料电池在实现“碳中和”的道路上发挥着重要作用:它们为满足道路交通中日益严格的二氧化碳排放限制做出了重要贡献。预计在未来几年内,商用车领域的氢燃料电池车将大幅增加。

关键词：燃料电池负载情况催化剂层二氧化碳排放碳中和商用车道路交通分析测量

The Nano Research Young Innovators Awards in bio-inspired nanomaterials

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Nano Research 2024年第2期17卷 417-425页

作者： Jun Chen Shuotao Wang Department of Bioengineering University of CaliforniaLos AngelesLos AngelesCA 90095USA Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Nano Research Young Innovators(NR45)Awards are designed to acknowledge and celebrate the achievements of young researchers under 45 years of *** individuals have made significant contributions to the field of nanoscience and *** the inaugural NR45 Awards in 2018,the journal's editorial board has recognized over a hundred innovators specializing in nanobiotechnology,nano energy,two-dimensional materials,and *** focus of the 2023 NR45 Awards is on bioinspired nanomaterials,acknowledging thirty-three outstanding young innovators for their extraordinary contributions in developing these materials with applications spanning clean energy,human healthcare,monitoring,and disease treatments,as shown in *** extend our heartfelt congratulations to all the 33 NR45 Awardees in 2023!

关键词： journal materials contributions

Time-dependent treatment of intramolecular energy transfer for HeICl complex

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Chinese Journal of Chemistry 1997年第3期15卷 218-224页

作者： Zhao, x Bu, Yx Wu, AL Guan, dr SHANDONG NORMAL UNIV DEPT PHYSJINAN 250014SHANDONGPEOPLES R CHINA

The time-dependent golden wave packet method has been used for calculating the decay widths of vibrational predissociation for HeICl complex in the B state with total angular momentum J=0. This is a good example of intramolecular energy transfer, We examine the dependence of the final rotational distribution (partial decay width) of ICI fragment an the stretching excitation. It is found that computed final rotational distributions are weakly dependent on the vibrational level being excited. Unlike the smoothly varying rotational distribution for lower initial vibrational levels, for higher initial vibrational levels the rotational distribution indicates the very pronounced oscillatory structure. The analysis of the rotational distribution as a function of propagation time reveals the predominant role of the final states interaction in determining the final rotational distribution.

关键词： vibrational predissociation time-dependent wave-packet propagation

高压储氢容器用高强度可焊接钢板Q690dr的研发

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炼油技术与工程 2024年第7期54卷 27-32页

作者：李双权梁峰崔强杨丽中石化广州工程有限公司广东省广州市510620 中国石化青岛炼油化工有限责任公司山东省青岛市266500 南京钢铁股份有限公司南钢研究院江苏省南京市210035 中国钢研科技集团有限公司数字化研发中心北京市100081

以ASME SA517 Gr.F为对标材料,设计高压储氢压力容器用可焊接高强度钢板Q690dr。通过优化化学成分、热处理工艺精准调控,可获得屈服强度不小于690 MPa,抗拉强度800~900 MPa,冲击性能良好的高强度可焊接Q690dr钢板。经系列抗氢性能评价试... 详细信息

以ASME SA517 Gr.F为对标材料,设计高压储氢压力容器用可焊接高强度钢板Q690dr。通过优化化学成分、热处理工艺精准调控,可获得屈服强度不小于690 MPa,抗拉强度800~900 MPa,冲击性能良好的高强度可焊接Q690dr钢板。经系列抗氢性能评价试验,Q690dr具有良好的抗氢脆性能,较低的氢脆敏感性。对比10 MPa氢气与同压力的氮气环境下的慢拉伸试验结果,Q690dr的相对延伸率约为96.4%,相对断面收缩率约为97.0%,具有较低的氢脆敏感性。10 MPa氢气环境下Q690dr测得的断裂韧度K_(IH)约为305 MPa·m^(0.5)。整体看,工业试制的Q690dr钢板各项指标性能优良稳定,符合相关标准及用户技术条件,可以用于实际工程项目高压储氢容器的建造。

关键词：压力容器可焊接高强钢氢脆敏感性裂纹扩展速率断裂韧度

Macrophage Nrf2,an anti-inflammatory signal in hepatic ischemia/reperfusion injury

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Cellular & Molecular Immunology 2023年第5期20卷 427-428页

作者： Joy x.Jiang Department of Molecular Biosciences UC DavisRm.30091089 Veterinary Medicine Dr.DavisCA95616US

Recently,the manuscript entitled Macrophage nuclear factor erythroid 2-related factor 2(Nrf2)deficiency promotes innate immune activation by tissue inhibitor of metalloproteinase 3(Timp3)-mediated RhoA/ROCK pathway in the ischemic liver by Rao and colleagues in Hepatology 2022,vol.75[1]described a novel role of Nrf2 in innate immunity in response to hepatic ischemia/reperfusion injury(IRI).Nrf2 is generally considered a redox signaling controller and drives protective signals as an antioxidant gene in multiple organs and diseases.

关键词： Nrf2 hepatic Macrophage

dr脊柱全长拼接摄影技术在脊柱侧弯诊断中的应用

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中国实用乡村医生杂志 2024年第8期31卷 47-50页

作者：杨志权广东省人民医院南海医院放射科

目的观察数字化x线摄影(digital radiography,dr)脊柱全长拼接技术在脊柱侧弯中诊断的应用效果。方法选取2022年1月—2023年1月期间在广东省人民医院南海医院进行脊柱全长摄影的脊柱侧弯患者90例作为研究对象，随机分为对照组和研究组... 详细信息

目的观察数字化x线摄影(digital radiography,dr)脊柱全长拼接技术在脊柱侧弯中诊断的应用效果。方法选取2022年1月—2023年1月期间在广东省人民医院南海医院进行脊柱全长摄影的脊柱侧弯患者90例作为研究对象，随机分为对照组和研究组各45例。两组均进行脊柱全长摄影，对照组采用C T扫描技术，研究组采用dr脊柱全长拼接技术。比较两组的图像质量、信噪比和拼接误差率。结果研究组图像质量优于对照组，差异有统计学意义(Pdr脊柱全长拼接摄影技术应用于脊柱侧弯的临床诊断中，可获取高质量图像，有效提高信噪比，减少拼接误差，临床应用价值高。

关键词：数字化x线摄影脊柱全长拼接摄影技术脊柱侧弯应用效果