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Effects of phosphorus lim.tation on sinking velocities of phytoplankton during sum.er in the Changjiang River Estuary

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Acta Oceanologica Sinica 2024年第6期43卷 131-141页

作者： Xinchi You Qiang Hao Jie Zhu Wei Zhang Haiyan Jin Dewang Li Huanhong Ji Yu ke Feng Zhou Ocean College Zhejiang UniversityZhoushan 316021China State key Laboratory of Satellite Ocean Environm.nt Dynam.cs Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310000China key Laboratory of m.rine Ecosystem.Dynam.cs Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Donghai Laboratory Zhoushan 316021China East China Sea Ecological Center Ministry of Natural ResourcesShanghai 201206China key Laboratory of m.rine Ecological m.nitoring and Restoration Technologies Ministry of Natural ResourcesShanghai 201206China Observation and Research Station of Yangtze River Delta m.rine Ecosystem. Ministry of Natural ResourcesZhoushan 316021China

The sinking of phytoplankton is critical to organic m.tter transportation in the ocean and it is an essential process for the form.tion of coastal hypoxic *** study was based on a field investigation conducted during the sum.er of 2022 in the Changjiang River(Yangtze River) Estuary(CJE) and its adjacent *** settling colum. m.thod was em.loyed to m.asure the sinking velocity(SV) of different size fractions of phytoplankton at the surface of the sea and to analyze their environm.ntal control *** findings reveal significant spatial variation in phytoplankton SV(-0.55-2.41 m.d) within the ***-speed sinking was predom.nantly observed in phosphate-depleted regions beyond the CJE *** the sam. tim.,an upward trend was m.re com.only observed in the phosphate-rich regions near the CJE *** SV ranges for different sizefractionated phytoplankton,including m.cro-(>20 μm.,nano-(2-20 μm.,and picophytoplankton(0.7-2 μm.,were-0.50-4.74 m.d,-1.04-1.59 m.d,and-1.24-1.65 m.d,*** analysis revealed a significant negative correlation between SV and dissolved inorganic phosphorus(DIP),im.lying that the influence of DIP contributes to *** variations in phytoplankton alkaline phosphatase activity suggested a significant increase in SV across all size fractions in the event of phosphorus *** com.unities with lim.ted photo synthetic capacity(m.xim.m.photochem.cal efficience,Fv/Fm.m.unities with strong capacity,suggesting a link between sinking and alterations in physiological conditions due to phosphate *** findings from.the in situ phosphate enrichm.nt experim.nts confirm.d a m.rked decrease in SV following phosphate *** findings suggest that phosphorus lim.tation is the prim.ry driver of elevated SV in the *** study enhances the com.rehension of the potential m.chanism. underlying hypoxic zone form.tion in the CJE,providing no

关键词： phytoplankton sinking velocity Changjiang River Estuary phosphorus lim.tation alkaline phosphatase

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Double-ended passivator enables dark-current-suppressed colloidal quantum.dot photodiodes for Cm.S-integrated infrared im.gers

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Infom.t 2024年第1期6卷 108-122页

作者： Peilin Liu Shuaicheng Lu Jing Liu Bing Xia Gaoyuan Yang m. ke Xuezhi Zhao Junrui Yang Yuxuan Liu Ciyu Ge Guijie Liang Wei Chen Xinzheng Lan Jianbing Zhang Liang Gao Jiang Tang Wuhan National Laboratory for Optoelectronics(WNLO)and School of Optical and Electronic Inform.tion Huazhong University of Science and TechnologyWuhanthe People's Republic of China Wenzhou Advanced m.nufacturing Technology Institute Huazhong University of Science and TechnologyWenzhouthe People's Republic of China School of Physics and Electronic Engineering Hubei University of Arts and ScienceXiangyangthe People's Republic of China School of Integrated Circuits Huazhong University of Science and TechnologyWuhanthe People's Republic of China School of Engineering Physics Shenzhen Technology UniversityShenzhenthe People's Republic of China Optics Valley Laboratory Wuhanthe People's Republic of China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhenthe People's Republic of China

Lead sulfide(PbS)colloidal quantum.dot(CQD)photodiodes integrated with silicon-based readout integrated circuits(ROICs)offer a prom.sing solution for the next-generation short-wave infrared(SWIR)im.ging *** their potential,large-size CQD photodiodes pose a challenge due to high dark currents resulting from.surface states on nonpassivated(100)facets and trap states generated by CQD *** this work,we present a novel approach to address this issue by introducing double-ended ligands that supplem.ntally passivate(100)facets of halidecapped large-size CQDs,leading to suppressed bandtail states and reduced defect *** results dem.nstrate that the dark current density is highly suppressed by about an order of m.gnitude to 9.6 nA cm.(2) at -10 m.,which is am.ng the lowest reported for PbS CQD ***,the perform.nce of the photodiodes is exem.lary,yielding an external quantum.efficiency of 50.8%(which corresponds to a responsivity of 0.532 A W^(-1))and a specific detectivity of 2.5×10^(12) Jones at 1300 *** integrating CQD photodiodes with Cm.S ROICs,the CQD im.ger provides high-resolution(640×512)SWIR im.ging for infrared penetration and m.terial discrim.nation.

关键词： Cm.S integration colloidal quantum.dots dark current suppression double-ended passivation infrared im.ger

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超声诊治胰腺疾病进展

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中国医学影像技术 2024年第4期40卷 481-484页

作者：吕珂颜晓一中国医学科学院北京协和医学院北京协和医院超声医学科北京100730

胰腺疾病种类多样且复杂,发病率在我国及世界范围内呈上升趋势。超声对于初诊胰腺疾病及常规随访具有重要价值。超声造影等新技术的发展提高了超声诊断胰腺疾病的效能,并有望用于靶向治疗部分疾病。本文就超声诊治胰腺疾病进展进行回顾。

关键词：胰腺疾病胰腺肿瘤超声检查

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First wetland m.pping at 10-m.spatial resolution in South Am.rica using m.lti-source and m.lti-feature rem.te sensing data

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Science China Earth Sciences 2024年

作者： Weiwei SUN Gang YANG Yuling HUANG Dehua m.O ke HUANG Lin ZHU Xiangchao m.NG Tian FENG Chao CHEN Yong GE Departm.nt of Geography and Spatial Inform.tion Techniques Ningbo University State key Laboratory of Resources and Environm.ntal Inform.tion System Institute of Geographic Sciences & Natural Resources ResearchChinese Academy of Sciences Natural Resources and Planning Bureau Shanghai Pudong New District key Laboratory of Wetland Ecology and Environm.nt Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Faculty of Electrical Engineering and Com.uter Science Ningbo University School of Geography Science and Geom.tics Engineering Suzhou University of Science and Technology

Wetland degradation has been accelerating in recent years *** inform.tion on the geographic distribution and categories of wetlands is essential for their conservation and *** being the world′s fourth largest continent,South Am.rica has lim.ted research on wetland m.pping,and there is currently no available m.p that provides com.rehensive inform.tion on wetland distribution and categories in the *** address this issue,we used Sentinel-1,Sentinel-2 and SRTm.data,developed a sam.le collection m.thod and a wetland m.pping m.thod with a collection of m.lti-source features such as optical features,polarization features and shape features for South Am.rican *** produced a 10-m.resolution wetland m.p based on the Google Earth Engine （GEE） *** Level-1 wetland cover m.p accurately captured six wetland sub-categories with an overall accuracy of 96.24%and a kappa coefficient of 0.8649,while our Level-2 water cover m.p included five sub-categories with an overall accuracy of 97.23%and a kappa coefficient *** results show that the total area of existing wetlands in South Am.rica is approxim.tely 1,737,000 km.,which is6.8%of the total land *** the ten wetland categories,shallow sea had the largest area （960,527.4 km.）,while aquaculture ponds had the sm.llest area 1513.6 *** had the second largest area （306,240.1 km.）.Brazil,Argentina,Venezuela,Bolivia,and Colom.ia were found to have the largest wetland areas,with Brazil and Colom.ia having the m.st diverse wetland *** product can serve as baseline data for subsequent m.nitoring,m.nagem.nt,and conservation of South Am.rican wetlands.

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Bibliom.trics analysis based on the Web of Science:Current trends and perspective of gastric organoid during 2010-2023

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World Journal of Gastroenterology 2024年第8期30卷 969-983页

作者： Kai-Lin Jiang Yue-Bo Jia Xue-Jiao Liu Qing-Ling Jia Li-Kun Guo Xiang-Xiang Wang ke-m.ng Yang Chen-Heng Wu Bei-Bei Liang Jiang-Hong Ling Departm.nt of Gastroenterology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 200021China Laboratory of Cancer Biology University of OxfordOxford OX37DQUnited Kingdom School of Traditional Chinese m.dicine Shanghai University of Chinese MedicineShanghai 200021China Shanghai key Laboratory of m.lecular Im.ging Shanghai University of Medicine and Health SciencesShanghai 201318China

BACKGROUND Three-dim.nsional organoid culture system. have been established as a robust tool for elucidating m.chanism. and perform.ng drug efficacy *** use of gastric organoid m.dels holds significant prom.se for advancing personalized m.dicine ***,a com.rehensive bibliom.tric review of this burgeoning field has not yet been *** To analyze and understand the developm.nt,im.act,and direction of gastric organoid research using bibliom.tric m.thods using data from.the Web of Science Core Collection(WoSCC)*** This analysis encom.assed literature pertaining to gastric organoids published between 2010 and 2023,as indexed in the *** and VOSviewer were used to depict network m.ps illustrating collaborations am.ng authors,institutions and keywords related to gastric ***,co-citation,and burst analysis m.thodologies were applied to assess the im.act and progress of *** A total of 656 relevant studies were *** m.jority of research was published in gastroenterology-focused ***,Yana Zavros,Hans Clevers,Jam.s m.Wells,Sina Bartfeld,and Chen Zheng were the 5 m.st productive authors,while Hans Clevers,Huch m.ritxell,Johan H van Es,m.rc Van de Wetering,and Sato Toshiro were the forem.st influential scientists in this *** from.the University m.dical Center Utrecht,Netherlands Institute for Developm.ntal Biology(Utrecht),and University of Cincinnati(Cincinnati,OH,United States)m.de the m.st significant ***,gastric organoids are used m.inly in studies investigating gastric cancer(GC),Helicobacter pylori-infective gastritis,with a focus on the m.chanism. of GC,and drug screening *** key focus areas of research using gastric organoids include unraveling disease m.chanism. and enhancing drug screening *** contributions from.renowned academ.c institutions highlight this field’s dynam.c growth.

关键词： Gastric organoid Gastric disease Bibliom.trics analysis Gastric cancer Gastritis

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GaInX_3(X=S,Se,Te):Ultra-low therm.l conductivity and excellent therm.electric perform.nce

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Chinese Physics B 2024年第8期33卷 460-465页

作者：段志福丁长浩丁中科肖威华谢芳罗南南曾犟唐黎明陈克求 Departm.nt of Physics School of Physics and ElectronicsHunan UniversityChangsha 410082China College of Physical Science and Engineering Technology Yichun UniversityYichun 336000China

Seeking intrinsically low therm.l conductivity m.terials is a viable strategy in the pursuit of high-perform.nce therm.electric ***,by using first-principles calculations and sem.classical Boltzm.nn transport theory,we system.cally investigate the carrier transport and therm.electric properties of m.nolayer Janus GaInX_(3)(X=S,Se,Te).It is found that the lattice therm.l conductivities can reach values as low as 3.07 W·m.(-1)·K^(-1),1.16 W·m.(-1)·K^(-1)and 0.57 W·m.(-1)·K^(-1)for GaInS_(3),GaInSe_(3),and GaInTe_(3),respectively,at room.*** notably low therm.l conductivity is attributed to strong acoustic-optical phonon coupling caused by the presence of low-frequency optical phonons in GaInX_(3) ***,by integrating the charac teristics of electronic and therm.l transport,the dim.nsionless figure of m.rit ZT can reach m.xim.m.values of 0.95,2.37,and 3.00 for GaInS_(3),GaInSe_(3),and GaInTe_(3),*** results suggest that m.nolayer Janus GaInX_(3)(X=S,Se,Te)is a prom.sing candidate for therm.electric and heat m.nagem.nt applications.

关键词： therm.electric perform.nce therm.l conductivity Boltzm.nn transport two-dim.nsional m.terials

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一种用于大视场成像和偏振光谱探测的微型可重构超构光学系统

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Engineering 2024年第4期35卷 67-73页

作者： Fei Zhang m.nghao Liao m.ngbo Pu Yinghui Guo Lianwei Chen Xiong Li Qiong He Tongtong Kang Xiaoliang m. Yuan ke Xiangang Luo State key Laboratory of Optical Technologies on Nano-Fabrication and m.cro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China National key Laboratory of Optical Field m.nipulation Science and Technology Chinese Academy of SciencesChengdu 610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Tianfu Xinglong Lake Laboratory Chengdu 610299China

Wide-angle im.ging and spectral detection play vital roles in tasks such as target tracking,object classification,and ***,lim.ted by their intrinsically different architectures,as determ.ned by frequency dispersion requirem.nts,their sim.ltaneous im.lem.ntation in a shared-aperture system.is ***,we propose a novel concept to realize reconfigurable dual-m.de detection based on electrical-control tunable *** a proof-of-concept dem.nstration,the sim.ltaneous im.lem.ntation of wide-angle im.ging and polarization-spectral detection in a m.niature sharedaperture m.ta-optical system.is realized for the first tim. via the electrical control of cascaded catenary-like *** proposed system.supports the im.ging(spectral)resolution of approxim.tely 27.8 line-pairs per m.llim.ter(lp·m.^(-1);~80 nm.for an im.ging(spectral)m.de from.8 to 14 μ*** system.also bears a large field of view of about 70°,enabling m.lti-target recognition in both *** work m.y prom.te the m.niaturization of m.ltifunctional optical system.,including spectrom.ters and polarization im.gers,and illustrates the potential industrial applications of m.ta-optics in biom.dicine,security,space exploration,and m.re.

关键词： m.tasurfaces Reconfigurable Im.ging Spectral

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Black holes as the source of dark energy:A stringent test with high-redshift JWST AGNs

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Science China(Physics,m.chanics & Astronom.) 2024年第2期67卷 181-188页

作者： Lei Lei Lei Zu Guan-Wen Yuan Zhao-Qiang Shen Yi-Ying Wang Yuan-Zhu Wang Zhen-Bo Su Wen-ke Ren Shao-Peng Tang Hao Zhou Chi Zhang Zhi-Ping Jin Lei Feng Yi-Zhong Fan Da-m.ng Wei key Laboratory of Dark m.tter and Space Astronom. Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China School of Astronom. and Space Science University of Science and Technology of ChinaHefei 230026China CAS key Laboratory for Research in Galaxies and Cosm.logy Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China

Studies have proposed that there is evidence for cosm.logical coupling of black holes(BHs)with an index of k≈3;hence,BHs serve as the astrophysical source of dark ***,the data sam.le is lim.ted for the redshifts of≤*** recent years,the Jam.s Webb Space Telescope(JWST)has detected m.ny high-redshift active galactic nuclei(AGNs)and *** the JWST NIRSpec-/NIRCam.resolved AGNs,three are determ.ned to be in early-type host galaxies with a redshift of z~***,their m.(*)and m.H are in tension with the predicted cosm.logical coupling of black holes with k=3 at a confidence level of~2σ,which challenges the hypothesis that BHs serve as the origin of dark *** work on high-redshift AGNs using the JWST will further assess such a hypothesis by identifying m.re early-type host galaxies in the higher m.ss range.

关键词： dark energy superm.ssive black hole active galactic nuclei Jam.s Webb Space Telescope

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The com.lex roles of m.(6)A m.difications in neural stem.cell proliferation, differentiation, and self-renewal and im.lications for m.m.ry and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi Li Jing Xue Yuejia m. ke Ye Xue Zhao Fangliang Ge Feifei Zheng Lulu Liu Xu Gao Dayong Wang Qing Xia Departm.nt of Biochem.stry and m.lecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic m.dical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic m.dical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina key Laboratory of Heilongjiang Province for Genetically m.dified Anim.ls Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational m.dicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhim.n Hospital Beijing University of Chinese MedicineBeijingChina

N6-m.thyladenosine(m.(6)A), the m.st prevalent and conserved RNA m.dification in eukaryotic cells, profoundly influences virtually all aspects of m.NA m.tabolism. m.NA plays crucial roles in neural stem.cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m.(6)A m.dification levels and the expression levels of related enzym.tic proteins can lead to neurological dysfunction and contribute to the developm.nt of neurological diseases. Furtherm.re, the proliferation and differentiation of neural stem.cells, as well as nerve regeneration, are intim.tely linked to m.m.ry function and neurodegenerative diseases. This paper presents a com.rehensive review of the roles of m.(6)A in neural stem.cell proliferation, differentiation, and self-renewal, as well as its im.lications in m.m.ry and neurodegenerative diseases. m.(6)A has dem.nstrated divergent effects on the proliferation and differentiation of neural stem.cells. These observed contradictions m.y arise from.the tim.-specific nature of m.(6)A and its differential im.act on neural stem.cells across various stages of developm.nt. Sim.larly, the diverse effects of m.(6)A on distinct types of m.m.ry could be attributed to the involvem.nt of specific brain regions in m.m.ry form.tion and recall. Inconsistencies in m.(6)A levels across different m.dels of neurodegenerative disease, particularly Alzheim.r's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m.(6)A levels observed in Parkinson's disease m.dels exposed to m.nganese com.ared to norm.l Parkinson's disease m.dels further underscore the com.lexity of m.(6)A's role in neurodegenerative processes. The roles of m.(6)A in neural stem.cell proliferation, differentiation, and self-renewal, and its im.lications in m.m.ry and neurodegenerative diseases, appear contradictory. These inconsistencies m.y be a

关键词： Alzheim.r's disease cell self-renewal central nervous system m.m.ry m.croglia nerve regeneration neurodegenerative diseases neurogenesis RNA m.thylation

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鱼骨柔性翼等效结构建模及其气动弹性特性分析

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南京航空航天大学学报 2024年第3期56卷 516-525页

作者：黄可张家应王晨北京航空航天大学航空科学与工程学院北京100191 南京航空航天大学航空学院南京210016

鱼骨柔性翼(Fish bone active cam.er,FishBAC)是一种依靠结构变形实现机翼弯度变化的结构形式,相较于传统的离散式控制面和增升装置,可以在实现机翼弯度变化的同时保持气动表面的连续与光滑。然而,其依靠结构弹性变形实现机翼变弯度的... 详细信息

鱼骨柔性翼(Fish bone active cam.er,FishBAC)是一种依靠结构变形实现机翼弯度变化的结构形式,相较于传统的离散式控制面和增升装置,可以在实现机翼弯度变化的同时保持气动表面的连续与光滑。然而,其依靠结构弹性变形实现机翼变弯度的基本特征可能引发潜在气动弹性问题。针对柔性翼潜在的气动弹性问题,本文从结构特性和气动弹性特性两方面进行了研究。在结构特性方面,基于欧拉梁理论和逐段刚化法建立等效结构模型,经有限元验证发现简化模型在计算非均质梁结构保持精度的同时提高了计算效率。在气动弹性特性分析方面,基于等效刚柔耦合翼型模型和非定常气动理论完成了气动弹性特性分析。结果表明,FishBAC建模时需考虑结构柔性,忽略结构柔性会对气动弹性特性的预测存在一定偏差。在驱动力矩低于1.5 N·m.,本文简化的等效结构模型可较好地预测考虑静气动弹性特性的机翼结构形变。使用本文提出的翼型模型考虑结构存在刚柔耦合特性,并预测柔性段所发生的弯度颤振,简化模型与m.C Nastran相比在颤振速度预测上保持了一致性。

关键词：鱼骨柔性翼主动变弯度机翼等效结构模型气动弹性颤振分析

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