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Aggregation-induced dual-color luminogen with enhanced chiroptical property

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Science China Chemistry 2022年第9期65卷 1679-1680页

作者： Wen Su Fanglong Yuan CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Physics Chemistryand Biology(IFM)Linkoping UniversityLinkoping 58183Sweden Department of Electrical and Computer Engineering University of TorontoTorontoM5S 2E8 OntarioCanada

Aggregation-induced emission(AIE),which was first proposed by Tang et al.[1]in 2001,describes a photophysical phenomenon that organic molecules can show much stronger light emission in aggregated state than that of si... 详细信息

关键词： state property diluted

Impact of wastewater treatment plant effluent discharge on the antibiotic resistome in downstream aquatic environments:a mini review

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 131-141页

作者： Zhiguo su Lyujun Chen Donghui wen School of Environment Tsinghua UniversityBeijng 100084China 2 Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environmental Technology and EcologyYangtze Delta Region Institute of Tsinghua UniversityJiaxing 314050China College of Environmental Sciences and Engineering Peking UniversityBeijing 100871China

Antimicrobial resistance(AMR)has emerged as a significant challenge in human health.Wastewater treatment plants(WWTPs),acting as a link between human activities and the environment,create ideal conditions for the selection and spread of antibiotic resistance genes(ARGs)and antibioticresistant bacteria(ARB).Unfortunately,current treatment processes are ineffective in removing ARGs,resulting in the release of large quantities of ARB and ARGs into the aquatic environment through WWTP effluents.This,in turn,leads to their dispersion and potential transmission to human through water and the food chain.To safeguard human and environmental health,it is crucial to comprehend the mechanisms by which WWTP effluent discharge influences the distribution and diffusion of ARGs in downstream waterbodies.In this study,we examine the latest researches on the antibiotic resistome in various waterbodies that have been exposed to WWTP effluent,highlighting the key influencing mechanisms.Furthermore,recommendations for future research and management strategies to control the dissemination of ARGs from WWTPs to the environment are provided,with the aim to achieve the“One Health”objective.

关键词： Antibiotic resistance genes(ARGs) Wastewater treatment plants(WWTPs) Effluent-receiving waterbodies Environmental risk Influencing mechanism

Asian monsoon shaped the pattern of woody dicotyledon richness in humid regions of China

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Plant Diversity 2020年第3期42卷 148-154页

作者： wen-Yun Chen Tao su Department of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming 650201China CAS Key Laboratory o f Tropical Forest Ecology Xishuangbanna Tropical Botanical CardenChinese Academy of SciencesMengla 666303China

Understanding how geographical patterns of plant richness are established is a key scientific question in ecology and biogeography.Climate factors,such as environmental energy,water availability,and rainfall seasonality,have been widely proposed to account for geographical patterns of plant richness at large scales.Using a compiled distribution data set of 3166 native woody dicotyledons across 732 calibration grids at the county level in humid regions of China,we explored the geographical pattern of woody dicotyledon richness and its relationship to climatic variations,especially the Asian monsoonal climate.We found that species richness decreases with increasing latitude.Our study indicates that water availability(particularly mean annual precipitation,MAP)is the major abiotic factor in determining large-scale distribution patterns of species richness,Moreover,the seasonality of rainfall variables under the Asian monsoon climate largely contributes to species richness,because species richness correlates more significantly with precipitation during the three driest consecutive months(P3 DRY)than precipitation during the three wettest consecutive months(P3 WET).Therefore,we conclude that woody dicotyledon richness in humid regions of China is mainly affected by the Asian winter monsoon.

关键词： Species richness Precipitation Seasonal rainfall Temperature Biodiversity

Crop plant signaling for real-time plant identification in smart farm: A systematic review and new concept in artificial intelligence for automated weed control

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Artificial Intelligence in Agriculture 2020年第1期4卷 262-271页

作者： wen-Hao su China Agricultural University College of Engineering17 Qinghua East RoadHaidianBeijing 100083China University of California-Davis Department of Biological and Agricultural EngineeringOne Shields AvenueDavisCA 95616USA

The continued emergence of herbicide-resistant weeds and the increasing labor costs are threatening the ability of growers to manage weeds and maintain profits.The smart farm with the advantage of non-invasive and high-efficiency operation plays an important role in increasing the sustainability of agricultural system as it can optimize crop inputs such as herbicides while preserving resources including soil and water.An automatic weed control system requires a sensing subsystem capable of detecting and distinguishing crop plants from weeds.The overlapping plants remain a challenge for successful detection of weeds.Crop plant signaling is a new robot-plant interaction technique that allows the visualization of exogenous fluorescent signals applied to crop plants for crop/weed identification.Based on all published articles in the leading edge of knowledge,a comprehensive review of the mushrooming crop plant signaling for discriminations of weeds and crops is highlighted.The discussion outlines the significant progress that has been made in developing new and more robust automated systems along with the current challenges and future prospects.This paper details the promise of crop plant signaling for accurate and automated plant recognitions in cropping systems.There is no doubt that this review is of great significance to scholars in related research field to study the solutions to real-time weed control.

关键词： Crop plant signaling Robot-plant interaction Fluorescent compound Weed control

Tectonic Boundary and Ceasing Time of Amalgamation between the North China Craton and the North Qinling Belt

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Journal of Earth Science 2018年第5期29卷 1074-1080页

作者： Jingbo Liu Neng-Song Chen Wen Su State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences College of Earth and Planetary Sciences University of the Chinese Academy of Sciences School of Earth Sciences Center for Global Tectonics China University of GeosciencesWuhan

The Qinling orogenic belt is a composite orogen, consisting of the north and south Qinling belts with different collision ages. The North Qinling belt is composed of several petro-tectonic units, including the Kuanping, Erlangping, Qinling and Danfeng groups with numerous granitoid plutons from Neoproterzoic to Middle Devonian. To the north of the Kuanping Group, a mylonitized granite body in the Luanchuan Group was determined to have the magmatic age of 850 Ma, which is the northernmost Neoprotozoic granite body. The volcanic rocks of the Dahongkou Formation from the Luanchuan Group had the eruptive age of -1 600 Ma, obtained from zircon U-Pb LA-ICP-MS analysis. The detrital zircons in meta-sandstones from the Taowan Group have three populations of-920-1 400, -1 600-2 100, and 〉2 200 Ma ages, whereas those from the Kuanping Group shows six populations with the peaks of -590, -767, -952, -1 590, -2 485, and -3 200 Ma. These data suggest that the boundary between the North China Craton and the North Qinling belt cannot simply be constrained by using the events determined from zircon U-Pb ages. The granitoid plutons with the magmatic age of 430 Ma were strongly deformed, while those with the magmatic age of -390 Ma show no or less deformation, indicating that the deformation of amalgamation between the North China Craton and the North Qinling belt ceased between 390 and 430 Ma.

关键词： Qinling orogenic belt Taowan Group Kuanping Group granitoid zircon age.

Efficient piezocatalytic activation of peroxydisulfate over Bi_(2)Fe_(4)O_(9):thickness-dependent synergy effect between peroxydisulfate activation and piezocatalysis

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Rare Metals 2023年第12期42卷 4005-4014页

作者： Chuang-Jian su Chao-Lin Li wen-Hui Wang School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhen 518055China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

Piezocatalytic activation of persulfate(PS) has great application potential in environmental remediation;however,the relationship between piezocatalyst thickness and catalytic activity is not clear,limiting the further improvement of catalytic activity and application of the technology.Herein,the Bi_(2)Fe_(4)O_(9)(BFO) piezocatalysts with tunable thickness were prepared through a facile hydrothermal method by tuning the molar ratio of Bi(NO_(3)),5H_(2)O and FeCl_(3)·6H_(2)O for piezocatalytic activation of peroxydisulfate(PDS).The BFO with the smallest thickness exhibits excellent catalytic activity,and the SO_(4)^(·-)and ·OH are the major reactive oxygen species for degrading organic pollutants.Further XPS investigations and finite element analyses demonstrate that the decreased thickness of BFO not only exposes more Fe^(2+)sites for PDS activation,but also improve the piezoelectric effect to accelerate the regeneration of Fe^(2+),thus enabling an enhanced synergy effect between PDS activation and piezocatalysis for outstanding catalytic activity.This work provides an understanding of the relationship between thickness of piezocatalysts and its catalytic activity over PDS activation,facilitating the development of more efficient piezocatalysts and PS-based advanced oxidation processes.

关键词： Bi_(2)Fe_(4)O_(9)(BFO)piezocatalyst Active sites Piezocatalytic activation Peroxydisulfate(PDS) Reactive oxygen species Environment remediation

High-pressure phase transformation of carbonate malachite Cu_(2)(CO_(3))(OH)_(2)driven by[CuO_(6)]regularization and[CO_(3)]rotation

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Geoscience Frontiers 2021年第2期12卷 965-973页

作者： Jing Gao Xueyin Yuan Bin Chen Zhenxian Liu Wen Su State Key Laboratory of Lithospheric Evolution and Institutions of Earth ScienceInstitute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China Hawaii Institute of Geophysics and Planetology University of Hawaii at ManoaHonoluluHawaiʻi96822USA Department of Physics University of Illinois at ChicagoChicagoIL60607USA

High-pressure synchrotron X-ray diffraction and infrared absorption spectroscopy have been employed to study the crystal chemistry and phase transitions in an[OH]-bearing carbonate,malachite Cu2(CO_(3))(OH)_(2),to determine the effect of[OH]on the stability of carbonate.We found that the crystal structure of malachite is stabilized by a high degree of[CuO_(6)]-octahedron distortion,as is manifested by large variations in Cu–O bond lengths resulting from oxygen atoms that connect to hydrogen at crystallographically different sites.External pressure offsets the effect of hydrogen bond,promotes[CuO_(6)]compression and regularization and accordingly[CO_(3)]rotation.Rotation of[CO_(3)]-triangles,in turn,assists in a conversion in the crystal orientation of the[CuO_(6)]structural unit.During compression to above~6 GPa,malachite begins to turn into the rosasite lattice,accompanied with a jump in density of 3.3%.Rosasite is characterized with a hardened lattice and preserves to the maximum pressure(18.2 GPa)of the present study.Phase transformation mechanism of malachite to rosasite is different from that of carbonates,with the latter being driven by an almost uniform compression of[MO_(6)]-octahedron(M=Ca,Cd,Mn,Fe,Zn,Mg,etc.)and rotation/translation of[CO_(3)]-triangle under pressure.

关键词： X-ray diffraction Infrared spectroscopy Hydrogen bond Carbonates Phase transformation

Autosomal dominant non-syndromic hearing loss caused by a novel mutation in MYO7A:A case report and review of the literature

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世界临床病例杂志 2023年第25期11卷 5962-5969页

作者： Cai-Feng Xia Rong Yan wen-Wen Su Yu-He Liu Department of Otolaryngology Head and Neck surgery Peking University First HospitalBeijing 100034China Department of Otolaryngology Head and Neck surgery Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

BACKGROUND Variants in the MYO7A gene commonly result in Usher syndrome,and in rare cases lead to autosomal dominant non-syndromic deafness(DFNA11).Currently,only nine variants have been reported to be responsible for DFNA11 and their clinical phenotypes are not identical.Here we present a novel variant causing DFNA11 identified in a three-generation Chinese family.CASE suMMARY The proband was a 53-year-old Han male who presented with post-lingual bilateral symmetrical moderate sensorineural hearing loss.We learned from the patient’s medical history collection that multiple family members also had similar hearing loss,generally occurring around the age of 40.subsequent investigation by high-throughput sequencing identified a novel MYO7A variant.To provide evidence supporting that this variant is responsible for the hearing loss in the studied family,we performed Sanger sequencing on 11 family members and found that the variant co-segregated with the deafness phenotype.In addition,the clinical manifestation of the 11 affected family members was found to be lateonset bilateral slowly progressive hearing loss,inherited in this family in an autosomal dominant manner.None of the affected family members had visual impairment or vestibular symptoms;therefore,we believe that this novel MYO7A variant is responsible for the rare DFNA11 in this family.CONCLUSION We report a novel variant leading to DFNA11 which further enriches the collection of MYO7A variants,and our review of the nine previous variants that have been identified to cause DFNA11 provides a reference for clinical genetic counseling.

关键词： Autosomal dominant hearing loss MYO7A gene Non-syndromic hearing loss Variant Hereditary hearing loss Case report

Rhodium-catalyzed enantioselective annulation of N-phenoxyacetamides with 1,3-dienes

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Science China Chemistry 2023年第10期66卷 2842-2846页

作者： Hui Yang Zi-Qi Yang su-Zhen Zhang wen-wen Zhang Qing Gu Shu-Li You State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

Chiral dihydrobenzofuran is a valuable synthetic fragment in both medicinal and organic chemistry.Efficient rhodium(Ⅲ)-catalyzed chemoselective and enantioselective C-H functionalization/[3+2]annulation of N-phenoxyacetamides with 1,3-dienes is reported.In the presence of 5 mol%Cp Rh complex,various chiral dihydrobenzofurans were synthesized in up to 79%yield and 98%ee.This reaction proceeds under mild conditions with excellent functional group compatibility.

关键词： asymmetric catalysis C-H functionalization rhodium catalysis chiral dihydrobenzofuran