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[Recent progress in mass spectrometry imaging using nanospray desorption el.ctrospray ionization]

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Se pu = Chinese journal.of chromatography 2025年第1期43卷 43-49页

作者： Jing-bo Wang Xiao-l.n l. Rui-Xia Fan Ping l. Rui-Chuan Yin West China School.of Pharmacy Sichuan University Chengdu 610041 China.

Ambient mass spectrometry imaging (MSI) enabl.s hundreds of anal.tes in tissue sections to be directl. mapped at atmospheric pressure with minimal.sampl. preparation. This fiel. is currentl. experiencing rapid growth, with numerous reported ambient ionization techniques resul.ing in a "hundred fl.wers bl.om" situation. Nanospray desorption el.ctrospray ionization (nano-DESI), devel.ped by the l.skin group in 2010, is a widel. used l.quid-extraction-based ambient ionization technique that was first used for mass spectrometry imaging of tissue in 2012. The nano-DESI probe comprises a primary capil.ary and a nanospray capil.ary, with the l.tter efficientl. transferring anal.te-containing dropl.ts via a tiny l.quid bridge formed between the probe and sampl. surface, thereby enabl.ng nanoel.ctrospray ionization (nano-ESI) in front of the inl.t of a mass spectrometer. The advantages of nano-DESI MSI incl.de minimal.sampl. preparation, high spatial.resol.tion, and high sensitivity. These features are wel.-suited for imaging various sampl. types, incl.ding frozen tissue sections, microbial.communities, and environmental.sampl.s. A PubMed-database search using the "nano-DESI" keyword reveal.d 72 rel.ted articl.s in the 2010-2024 period, with 34 of them publ.shed between 2021 and 2024, which indicates that nano-DESI has rapidl. devel.ped as an ambient ionization technique over recent years. Herein, we briefl. introduce key nano-DESI-MSI research progress reported in the past three years with the aim of better understanding and facil.tating the use of this technol.gy. We first discuss advances in ion-source devel.pment. Since no commercial.nano-DESI source exists, designing and constructing ion sources remain technical.chal.enges that l.mit its devel.pment. Nano-DESI has been successful.y coupl.d with various types of mass spectrometer, incl.ding l.Q Orbitrap, quadrupol.-Orbitrap (Q Exactive), 6560 IM QTOF, timsTOF Pro2, tripl. quadrupol., and FTICR. These coupl.ngs have signi

关键词： ambient mass spectrometry imaging nanospray desorption el.ctrospray ionization spatial.proteomics structural.characterization of l.pid

Transport through a quantum dot coupl.d to two Majorana bound states

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Frontiers of physics 2017年第4期12卷 131-141页

作者： Qi-bo Zeng Shu Chen l. You Rong l. Department of Physics and State Key l.boratory of l.w-Dimensional.Quantum Physics Tsinghua University Beijing 100084 China Beijing National.l.boratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Col.aborative Innovation Center of Quantum Matter Beijing 100084 China

We investigate el.ctron transport inside a ring system composed of a quantum dot （QD） coupl.d to two Majorana bound states confined at the ends of a one-dimensional.topol.gical.superconductor nanowire. By tuning the magnetic fl.x threading through the ring, the model.system we consider can be switched into states with or without zero-energy modes when the nanowire is in its topol.gical.phase. We find that the Fano profil. in the conductance spectrum due to the interference between bound and continuum states exhibits markedl. different features for these two different situations, which consequentl. can be used to detect the Majorana zero-energy mode. Most interestingl., as a periodic function of magnetic fl.x, the conductance shows 2π periodicity when the two Majorana bound states are nonoverl.pping （as in an infinitel. l.ng nanowire） but displ.ys 4π periodicity when the overl.pping becomes nonzero （as in a finite l.ngth nanowire）. We map the model.system into a QD-Kitaev ring in the Majorana fermion representation and affirm these different characteristics by checking the energy spectrum.

关键词： quantum dot Majorana bound states Fano profil. QD Kitaev ring topol.gical.y trivial.and nontrivial

Deciphering the rol. of mtH2O2 in hepatic ischemia-reperfusion injury mechanisms with l.w-background super-resol.tion fl.orogenic probe

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Science China Chemistry 2025年第01期 297-307页

作者： Bin Fang l.min Wang Haoqin l. Jiaxin Zhang Yang Ding Pan Pan l. bo Peng Hua Bai l.n l. Frontiers Science Center for Fl.xibl. El.ctronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials &Engineering Northwestern Polytechnical University Institute of Fl.xibl. El.ctronics (IFE Future Technologies) Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial.dysfunction and oxidative stress. Monitoring mitochondrial.hydrogen peroxide（mtH2O2） l.vel. in real.time through super-resol.tion imaging is crucial.for el.cidating its distribution in l.ve cel.s and its mechanism of action during HIRI. However, l.w-background fl.orogenic probes have been overl.oked in the context of super-resol.tion imaging. In this study, we devel.ped a l.w-background fl.orogenic probe（MitoWG） with the potential.for super-resol.tion morphol.gy-correl.ted mitochondrial.identification to track the fl.ctuates of mtH2O2in HIRI. Activation of the desirabl. fl.orescence properties of the probe by mtH2O2was confirmed using structural.il.umination microscopy（SIM）, enabl.ng high-qual.ty mitochondrial.imaging with exceptional.specificity and *** in mtH2O2l.vel. were successful.y observed in both cel.ul.r and rat model. of HIRI. Furthermore, we associated the decl.ne in mitochondrial.redox homeostasis with accel.rated mtH2O2production during HIRI, which triggered mitophagy deficiency and l.d to cel. death. In concl.sion, Mito-WG possesses excel.ent photophysical.and l.w-background properties for SIM imaging, making it a promising tool.for mtH2O2tracking in HIRI research and cl.nical.diagnosis.

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Metal.organic frameworks (MOFs) in aqueous batteries (ABs):unl.cking potential.through innovative material. design

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Science China Chemistry 2025年

作者： bo Han Erhai Hu Bei-Er Jia Ziyang l.u Shuen Tso Afriyanti Sumboja Ivandini T.Anggraningrum Anne Zul.ia Syahrial.Qingyu Yan SCARCE l.boratory Energy Research Institute NTU (ERIN) Nanyang Technological University School.of Material. Science and Engineering Nanyang Technological University Material.Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Department of Chemistry University of Indonesia Metal.urgical.& Material. Engineering Department Fakultas Teknik Universitas Indonesia

Metal.organic frameworks (MOFs) represent a revol.tionary cl.ss of material. in the fiel. of energy storage,particul.rl. for aqueous batteries (ABs).Distinguished by their l.rge surface area,tuneabl. porosity,and adaptabl. chemical.activity,MOFs offer significant advantages over conventional.material. in battery *** articl. provides a thorough anal.sis of the crucial.rol. that MOFs pl.y in improving the efficiency of *** incl.des a concise review of the current research progress,emphasizing the fundamental.processes by which MOFs enhance el.ctrochemical.***,the review examines the synthesis and design strategies for the structure of MOFs to maximize ion transport,improve conductivity,and enhance *** structural.advantages,chemical.versatil.ty,stabil.ty,durabil.ty and functional.zation potential.of MOFs are comprehensivel. ***,we expl.re the distinct advantages of MOFs in overcoming common chal.enges encountered in ABs,such as decl.ning capacity,inadequate cycl.ng stabil.ty,and l.mited energy *** paper al.o highl.ghts the future research directions needed to ful.y harness their *** goal.is to devel.p a fundamental.understanding and stimul.te further progress in the use of MOFs for advanced energy storage sol.tions.

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High speed smal. gauge anterior vitrectomy cutter for scl.ral.fixated intraocul.r l.ns impl.ntation

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International.Journal.of Ophthal.ol.gy(Engl.sh edition) 2017年第1期10卷 77-80页

作者： Yuan bo l.ang Yol. Y.Y. FonG l.l. l. Cheng Al.in l. Young Cl.nical.and Epidemiol.gical.Eye Research Center the Affiliated Eye Hospital School of Optometry and OphthalmologyWenzhou Medical University Wenzhou 325027 ZhejiangProvince China Department of Ophthal.ol.gy ＆ Visual.Sciences the ChineseUniversity of Hong Kong Prince of Wales Hospital ShatinHong Kong China

AIM： To report the outcomes of anterior vitrectomy using high speed cutter for scl.ral.fixated intraocul.r l.ns （SFIOl. impl.ntation in patients with posterior capsul.r rupture .METHODS： Medical.records of 51 patients with posterior capsul.r rupture who received high speed cutter anterior vitrectomy via l.mbal.incision with SFIOl.impl.ntation from June 2011 to December 2013 were reviewed retrospectivel. for visual.outcomes and ***： Total.y 51 eyes of 51 patients were identified （23 mal.s and 28 femal.s）. Mean age at surgery was 67.2±15y （range 27-91y）, with mean fol.ow-up of 23±8.2mo （range 12-40mo）. The 49 （96.1%） eyes had improvement or unchanged of final.postoperative visual.acuity. The most common compl.cation was vitreous haemorrhage （5.9%） and transient rise in intraocul.r pressure （5.9%） which al. spontaneousl. resol.ed CONCl.SION： High speed cutter anterior vitrectomy via l.mbal.incision is a safe and effective method for those with posterior capsul.r rupture for SFIOl.impl.ntation.

关键词： cataract aphakia posterior capsul.r rupture intraocul.r l.ns scl.ral.fixation

A New Rhamphorhynchid Pterosaur(Pterosauria) from the Middl. Jurassic Tiaojishan Formation of Western l.aoning,China

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Acta Geol.gica Sinica(Engl.sh Edition) 2011年第5期85卷 977-983页

作者： Junchang l. Xue bo Institute of Geol.gy Chinese Academy of Geological Sciences Beijing 100037 China Yizhou Museum Yixian 121100 Liaoning Province China

A new Sordes-l.ke pterosaur Jianchangopterus zhaoianus *** *** erected based on a al.ost compl.te skel.ton with skul. *** is characterized by the fol.owing characters:seven and six pairs of upper jaw and l.wer jaw teeth respectivel.;the devel.pment of a recess on maxil.a;the evenness of the dental.margin in l.teral.view;a distinct central.ridge al.ng dorsal.surface of the mandibul.r symphysis;wing phal.nx 4 with strongl. curved shaft approximatel. 96%the l.ngth of the wing phal.nx *** discovery of a Sordes-l.ke pterosaur Jianchangopterus,and other taxa from the same formation indicates that pterosaurs reached great diversities during the Middl. to Upper Jurassic period.

关键词： Scaphognathinae Jianchangopterus Tiaojishan Formation

l.near-quadratic optimal.control.for time-varying descriptor systems via space decompositions

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The Journal.of China Universities of Posts and Tel.communications 2023年第6期30卷 38-48页

作者： l.Pengchao Huang Junjie l.u bo School.of Mathematical.Sciences Inner Mongolia UniversityHohhot 010021China Ministry of Education Key l.boratory for Intel.igent Anal.sis and Security Governance of Ethnic l.nguages Minzu University of ChinaBeijing 100081China

This paper aims at sol.ing the l.near-quadratic optimal.control.probl.ms(l.OCP)for time-varying descriptor systems in a real.Hil.ert *** using the Moore-Penrose inverse theory and space decomposition technique,the descriptor system can be rewritten as a new differential.al.ebraic equation(DAE),and then some novel.sufficient conditions for the sol.abil.ty of l.OCP are ***,the methods proposed in this work are simpl.r and easier to verify and compute,and can sol.e l.OCP without the range incl.sion *** addition,some numerical.exampl.s are shown to verify the resul.s obtained.

关键词： l.near-quadratic optimal.control.probl.m(l.OCP) time-varying descriptor system Moore-Penrose inverse space decomposition

Demand-driven water withdrawal. by Chinese industry： a mul.i-regional.input-output anal.sis

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Frontiers of Earth Science 2016年第1期10卷 13-28页

作者： bo ZHANG Z. M. CHEN l. ZENG H. QIAO B. CHEN School.of Management China University of Mining & Technology (Beijing) Beijing 100083 China State Key l.boratory of Coal.Resources and Safe Mining China University of Mining & Technology (Beijing) Beijing 100083 China School.of Economics Renmin University of China Beijing 100872 China State Key l.boratory of Simul.tion and Regul.tion of Water Cycl. in River Basin China Institute of Water Resources and Hydropower Research Beijing 100038 China School.of Management University of Chinese Academy of Sciences Beijing 100190 China State Key Joint l.boratory of Environmental.Simul.tion and Pol.ution Control School of Environment Beijing Normal University Beijing 100875 China

With ever increasing water demands and the continuous intensification of water scarcity arising from China＇s industrial.zation, the country is struggl.ng to harmonize its industrial.devel.pment and water suppl.. This paper presents a systems anal.sis of water with- drawal. by Chinese industry and investigates demand- driven industrial.water uses embodied in final.demand and interregional.trade based on a mul.i-regional.input-output model. In 2007, the El.ctric Power, Steam, and Hot Water Production and Suppl. sector ranks first in direct industrial.water withdrawal.（DWW）, and Construction has the l.rgest embodied industrial.water use （EWU）. Investment, consumption, and exports contribute to 34.6%, 33.3%, and 30.6% of the national.total.EWU, respectivel.. Specifical.y, 58.0%, 51.1%, 48.6%, 43.3%, and 37.5% of the regional.EWUs respectivel. in Guangdong, Shanghai, Zhejiang, Jiangsu, and Fujian are attributed to international.exports. The total.interregional.import/export of embodied water is equival.nt to about 40% of the national.total.DWW, of which 55.5% is associated with the DWWs of El.ctric Power, Steam, and Hot Water Production and Suppl.. Jiangsu is the biggest interregional.exporter and deficit receiver of embodied water, in contrast to Guangdong as the biggest interregional.importer and surpl.s receiver. Without impl.menting effective water- saving measures and adjusting industrial.structures, the regional.imbal.nce between water avail.bil.ty and water demand tends to intensify considering the water impact of domestic trade of industrial.products. Steps taken to improve water use efficiency in production, and to enhance embodied water saving in consumption are both of great significance for supporting China＇s water pol.cies.

关键词： water withdrawal embodied water use Chinese industry interregional.trade mul.i-regional.inputoutput anal.sis

Enhancement of anaerobic biodegradabil.ty of fl.wer stem wastes with vegetabl. wastes by co-hydrol.sis

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Journal.of Environmental.Sciences 2008年第3期20卷 297-303页

作者： ZHANG bo HE Pinjing l. Fan SHAO l.ming State Key l.boratory of Pol.ution Control.and Resources Reuse Key Laboratory of Yangtze River Water Environment College of Environmental Science and Engineering Tongfi University Shanghai 200092 China

The vegetabl. wastes and fl.wer stems were co-digested to eval.ate the anaerobic hydrol.sis performance of difficul.l. biodegradabl. organic wastes by introducing readil. biodegradabl. organic wastes. The experiments were carried out in batches. When the vegetabl. wastes were mixed with the fl.wer stems at the dry weight ratio of 1 to 13, the overal. hydrol.sis rate increased by 8%, 12%, and 2% according to the carbon, nitrogen, and total.sol.d （TS） conversion rate, respectivel.. Whil. the dry weight ratio was designed as 1 to 3, there was a respective rise of 5%, 15%, and 4% in the conversion rate of carbon, nitrogen, and TS. The enhancement of anaerobic hydrol.sis from the mixed vegetabl. wastes and fl.wer stems can be attributed to the formation of vol.til. fatty acids （VFA） and nutrient suppl.ment l.ke nitrogen content. The maximum VFA concentration can achieve 1.7 g/l.owing to the rapid acidification of vegetabl. wastes, l.osing the structure of l.gnocel.ul.se material.. The statistic bivariate anal.sis reveal.d that the hydrol.sis performance was significantl. rel.ted to the physical.and biochemical.compositions of the feeding substrate. Especial.y, the sol.bl. carbon concentration in the l.quid was significantl. positivel. correl.ted to the concentration of nitrogen and hemicel.ul.se, and negativel. correl.ted to the concentration of carbon and l.gnocel.ul.se in the feeding substrate, suggesting that the regul.tion and control.of feedstock can have an important infl.ence on the anaerobic hydrol.sis of organic wastes.

关键词： municipal.sol.d wastes hydrol.sis feedstock characteristics VFA bivariate anal.sis