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EventLFM:event camera integrated Fourier light field microscopy for ultrafast 3D imaging

Light(Science & Applications) 2024年第7期13卷 1401-1415页

作者： Ruipeng Guo Qianwan Yang Andrew S.Chang Guorong Hu Joseph Greene christopher v.gabel Sixian You Lei Tian Department of Electrical and Computer Engineering Boston UniversityBostonMA 02215USA Department of Physiology and Biophysics Boston UniversityBostonMA 02215USA. Neurophotonics Center Boston UniversityBostonMA 02215USA. Research Laboratory of Electronics(RLE)in the Department of Electrical Science and Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA. Department of Biomedical Engineering Boston UniversityBostonMA 02215USA

Ultrafast 3D imaging is indispensable for visualizing complex and dynamic biological *** scanning-based techniques necessitate an inherent trade-off between acquisition speed and space-bandwidth product(SBP).Emerging single-shot 3D wide-field techniques offer a promising alternative but are bottlenecked by the synchronous readout constraints of conventional CMOS systems,thus restricting data throughput to maintain high SBP at limited frame *** address this,we introduce EventLFM,a straightforward and cost-effective system that overcomes these challenges by integrating an event camera with Fourier light field microscopy(LFM),a state-of-theart single-shot 3D wide-field imaging *** event camera operates on a novel asynchronous readout architecture,thereby bypassing the frame rate limitations inherent to conventional CMOS *** further develop a simple and robust event-driven LFM reconstruction algorithm that can reliably reconstruct 3D dynamics from the unique spatiotemporal measurements captured by *** results demonstrate that EventLFM can robustly reconstruct fast-moving and rapidly blinking 3D fluorescent samples at kHz frame ***,we highlight EventLFM’s capability for imaging of blinking neuronal signals in scattering mouse brain tissues and 3D tracking of GFP-labeled neurons in freely moving *** believe that the combined ultrafast speed and large 3D SBP offered by EventLFM may open up new possibilities across many biomedical applications.

关键词： field linking overcome

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A new perspective on intervertebral disc calcification—from bench to bedside

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Bone Research 2024年第1期12卷 50-61页

作者： Emanuel J.Novais Rajkishen Narayanan Jose A.Canseco Koen van de Wetering christopher K.Kepler Alan S.Hilibrand Alexander R.vaccaro Makarand v.Risbud Department of Orthopaedic Surgery Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA Unidade Local de Saúde do Litoral Alentejano Orthopedic DepartmentSantiago do CacémPortugal Rothman Orthopedic Institute at Thomas Jefferson University PhiladelphiaPAUSA

Disc degeneration primarily contributes to chronic low back and neck ***,there is an urgent need to understand the spectrum of disc degeneration phenotypes such as fibrosis,ectopic calcification,herniation,or mixed *** these phenotypes,disc calcification is the least *** calcification,by definition,is the pathological mineralization of soft tissues,widely studied in the context of conditions that afflict vasculature,skin,and ***,disc calcification is associated with poor surgical outcomes and back pain refractory to conservative *** is frequently seen as a consequence of disc aging and progressive degeneration but exhibits unique molecular and morphological characteristics:hypertrophic chondrocyte-like cell differentiation;TNAP,ENPP1,and ANK upregulation;cell death;altered Pi and PPi homeostasis;and local *** studies in mouse models have provided a better understanding of the mechanisms underlying this *** is essential to recognize that the presentation and nature of mineralization differ between AF,NP,and EP ***,the combination of anatomic location,genetics,and environmental stressors,such as aging or trauma,govern the predisposition to ***,the systemic regulation of calcium and Pi metabolism is less important than the local activity of PPi modulated by the ANK-ENPP1 axis,along with disc cell death and differentiation *** there is limited understanding of this phenotype,understanding the molecular pathways governing local intervertebral disc calcification may lead to developing disease-modifying drugs and better clinical management of degeneration-related pathologies.

关键词： degeneration metabolism intervertebral

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The semiotics of humor in cultural trauma:a pilot study on digital methodology concerning the evolution and overcoming of trauma through humor on the example of Rick and Morty

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Language and Semiotic Studies 2024年第2期10卷 203-221页

作者： Felix Poschinger christopher Shannon University of Hamburg Hamburg20148Germany Independent TokyoJapan

This pilot study on humor in cultural trauma uses innovative digital methodologies in speech recognition and social media analysis via Postman and Python in the Twitter API v2 to propose different forms to gather and analyze empirical data on semiotics and humor to be used in a broader *** given example of humorous instances on the cultural trauma of 9/11 in the fictional sitcom Rick and Morty is limited but corroborated by a second example that is structurally different from the first:humor about 9/11 in stand-up comedy by Louis *** on the data,humor in trauma seems to undergo a 5-phase-typology related to the Kübler-Ross model of grief,which is mended by the(digital)participation of ***,we argue,both shapes the discourse on humor in trauma and overcomes the traumatic effects through humorous discourse.

关键词： cultural trauma humor theory Kübler-Ross model collective memory

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利用探针跳跃式扫描离子电导显微镜技术揭示结直肠癌单细胞层面对H_(2)O_(2)良性应激的动态响应

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Science Bulletin 2024年第12期69卷 1909-1919页

作者：王东 Emily Woodcock 杨羲 Hiromi Nishikawa Elena v.Sviderskaya Masanobu Oshima christopher Edwards 张彦军 Yuri Korchev WPI Nano Life Science Institute(WPI-Nano LSI) Kanazawa UniversityKanazawa 920-1192Japan Department of Medicine Imperial College LondonLondon W120NNUnited Kingdom Cell Biology Research Centre Molecular and Clinical Sciences Research InstituteSt George’sUniversity of LondonLondon SW170REUnited Kingdom

Colorectal cancer(CRC),a widespread malignancy,is closely associated with tumor microenvironmental hydrogen peroxide(H_(2)O_(2))*** clinical trials targeting H_(2)O_(2)for cancer treatment have revealed its paradoxical role as a promoter of cancer *** the dynamics of cancer cell H_(2)O_(2)eustress at the single–cell level is *** this study,non–contact hopping probe mode scanning ion conductance microscopy(HPICM)with high-sensitive Pt–functionalized nanoelectrodes was employed to measure dynamic extracellular to intracellular H_(2)O_(2)gradients in individual colorectal cancer Caco–*** explored the relationship between cellular mechanical properties and H_(2)O_(2)*** to 0.1 or 1 mmol/L H_(2)O_(2)eustress increased the extracellular to intracellular H_(2)O_(2)gradient from 0.3 to 1.91 or 3.04,***,cellular F–actin–dependent stiffness increased at 0.1 mmol/L but decreased at 1 mmol/L H_(2)O_(2)*** H_(2)O_(2)–induced stiffness modulated AKT activation positively and glutathione peroxidase 2(GPX2)expression *** findings unveil the failure of some H_(2)O_(2)-targeted therapies due to their ineffectiveness in generating H_(2)O_(2),which instead acts eustress to promote cancer cell *** research also reveals the complex interplay between physical properties and biochemical signaling in cancer cells'antioxidant defense,illuminating the exploitation of H_(2)O_(2)eustress for survival at the single–cell *** GPX and/or catalase(CAT)enhances the cytotoxic activity of H_(2)O_(2)eustress against CRC cells,which holds significant promise for developing innovative therapies targeting cancer and other H_(2)O_(2)-related inflammatory diseases.

关键词： SPM Nanoprobe Nanobiology SECM ROS Stiffness

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The Triple Combination of Meropenem,Avibactam,and a Metallo-b-Lactamase Inhibitor Optimizes Antibacterial Coverage Against Different b-Lactamase Producers

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Engineering 2024年第7期38卷 124-132页

作者： Zhuoren Ling Alistair James Macdonald Farley Aditya Lankapalli Yanfang Zhang Shonnette Premchand-Branker Kate Cook Andrei Baran Charlotte Gray-Hammerton Claudia Orbegozo Rubio Edgars Suna Jordan Mathias Jürgen Brem Kirsty Sands Maria Nieto-Rosado Maria Mykolaivna Trush Nadira Naznin Rakhi Willames Martins Yuqing Zhou christopher Joseph Schofield Timothy Walsh Department of Biology&Ineos Oxford Institute for Antimicrobial Research University of OxfordOxford OX13REUK Chemistry Research Laboratory Department of Chemistry and the Ineos Oxford Institute for Antimicrobial ResearchUniversity of OxfordOxford OX13TAUK Latvian Institute of Organic Synthesis Riga LV-1006Latvia Department of Medical Microbiology Division of Infection and ImmunitySchool of MedicineCardiff UniversityCardiff CF144XNUK Enzymology and Applied Biocatalysis Research Center Faculty of Chemistry and Chemical EngineeringBabes-Bolyai UniversityCluj-Napoca 400028Romania

This work explores the potential of a triple combination of meropenem(MEM),a novel metallo-blactamase(MBL)inhibitor(indole-2-carboxylate 58(InC58)),and a serine-b-lactamase(SBL)inhibitor(avibactam(AvI))for broad-spectrum activity against carbapenemase-producing bacteria.A diverse panel comprising MBL-and SBL-producing strains was used for susceptibility testing of the triple combination using the agar dilution *** frequency of resistance(FoR)to MEM combined with InC58 was *** were sequenced and tested for cross resistance,fitness,and the stability of the resistance *** with the double combinations of MEM plus an SBL or MBL inhibitor,the triple combination extended the spectrum of activity to most of the isolates bearing SBLs(oxacillinase-48(OXA-48)and Klebsiella pneumoniae carbapenemase-2(KPC-2))and MBLs(New Delhi metallo-blactamases(NDMs)),although it was not effective against verona integron-encoded metallo-blactamase(vIM)-carrying Pseudomonas aeruginosa(***)and OXA-23-carrying Acinetobacter baumannii(***).The FoR to MEM plus InC58 ranged from 2.22×10^(-7)to 1.13×10^(-6).The resistance correlated with mutations to ompC and comR,affecting porin C and copper permeability,*** mutants manifested a fitness cost,a decreased level of resistance during passage without antibiotic pressure,and cross resistance to another carbapenem(imipenem)and a b-lactamase inhibitor(taniborbactam).In conclusion,compared with the dual combinations,the triple combination of MEM with InC58 and AvI showed a much wider spectrum of activity against different carbapenemaseproducing bacteria,revealing a new strategy to combat b-lactamase-mediated antimicrobial resistance.

关键词： Carbapenemase Metallo/serine-b-lactamase inhibitor Avibactam Meropenem Antimicrobial resistance

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The Representation of Soil Moisture−Atmosphere Feedbacks across the Tibetan Plateau in CMIP6

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Advances in Atmospheric Sciences 2023年第11期40卷 2063-2081页

作者： Joshua TALIB Omar v.MÜLLER Emma J.BARTON christopher M.TAYLOR Pier Luigi vIDALE U.K.Centre of Ecology and Hydrology WallingfordOX108BBU.K. National Centre for Atmospheric Science ReadingRG66BBU.K. Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Centro de Estudios de Variabilidad y Cambio Climático(CEVARCAM)Facultad de Ingeniería y Ciencias HídricasUniversidad Nacional del LitoralSanta FeArgentina National Centre for Earth Observation WallingfordOX108BBU.K. Department of Meteorology University of ReadingReadingRG66BBU.K.

Thermal processes on the Tibetan Plateau(TP)influence atmospheric conditions on regional and global *** this,previous work has shown that soil moisture−driven surface flux variations feed back onto the *** soil moisture is a source of atmospheric predictability,no study has evaluated soil moisture−atmosphere coupling on the TP in general circulation models(GCMs).In this study,we use several analysis techniques to assess soil moisture−atmosphere coupling in CMIP6 simulations including:instantaneous coupling indices;analysis of flux and atmospheric behaviour during dry spells;and a quantification of the preference for convection over drier *** these metrics we partition feedbacks into their atmospheric and terrestrial *** with previous global studies,we conclude substantial inter-model differences in the representation of soil moisture−atmosphere coupling,and that most models underestimate such *** on dry spell analysis,most models underestimate increased sensible heat during periods of rainfall *** example,the model-mean bias in anomalous sensible heat flux is 10 W m−2(≈25%)smaller compared to *** dry-spell sensible heat fluxes lead to a weaker atmospheric *** also find that most GCMs fail to capture the negative feedback between soil moisture and deep *** poor simulation of feedbacks in CMIP6 experiments suggests that forecast models also struggle to exploit soil moisture−driven *** improve the representation of land−atmosphere feedbacks requires developments in not only atmospheric modelling,but also surface processes,as we find weak relationships between rainfall biases and coupling indexes.

关键词： model evaluation land-atmosphere feedbacks Tibetan Plateau precipitation surface energy balance

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Colonoscopic polypectomy and associated techniques

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World Journal of Gastroenterology 2010年第29期16卷 3630-3637页

作者： christopher J Fyock Peter v Draganov Division of Gastroenterology Hepatology and NutritionUniversity of Florida

Polypectomy of colonic polyps has been shown to reduce the risk of colon cancer development and is considered a fundamental skill for all endoscopists who perform colonoscopy.A variety of polypectomy techniques and devices are available,and their use can vary greatly based on local availability and *** general,cold forceps and cold snare have been the polypectomy methods of choice for smaller polyps,and hot snare has been the method of choice for larger *** use of hot forceps has mostly fallen out of *** for difficult to remove polyps may require the use of special devices and advanced techniques and has continued to *** a result,the vast majority of polyps today can be removed *** electrocautery is frequently used for polypectomy,endoscopists should be thoroughly familiar with the basic principles of electrosurgery as it pertains to *** of a polypectomy site is an important adjunct to polypectomy and can greatly facilitate future surgery or endoscopic *** two most common post-polypectomy complications are bleeding and *** incidence can be decreased with the use of meticulous polypectomy techniques and the application of some prophylactic *** review will examine the technique of polypectomy and its complications from the perspective of the practicing gastroenterologist.

关键词： Colonic polyp Polypectomy Colonoscopy Polypectomy technique Complications

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Urban heat mitigation by green and blue infrastructure:Drivers,effectiveness,and future needs

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The Innovation 2024年第2期5卷 145-166页

作者： Prashant Kumar Sisay E.Debele Soheila Khalili Christos H.Halios Jeetendra Sahani Nasrin Aghamohammadi Maria de Fatima Andrade Maria Athanassiadou Kamaldeep Bhui Nerea Calvillo Shi-Jie Cao Frederic Coulon Jill L.Edmondson David Fletcher Edmilson Dias de Freitas Hai Guo Matthew C.Hort Madhusudan Katti Thomas Rodding Kjeldsen Steffen Lehmann Giuliano Maselli Locosselli Shelagh K.Malham Lidia Morawska Rajan Parajuli christopher D.F.Rogers Runming Yao Fang Wang Jannis Wenk Laurence Jones Global Centre for Clean Air Research(GCARE) School of SustainabilityCivil and Environmental EngineeringFaculty of Engineering and Physical SciencesUniversity of SurreyGuildford GU27XHUK Institute for Sustainability University of SurreyGuildford GU27XHSurreyUK School of Built Environment University of ReadingWhiteknightsReading RG66BUUK School Design and the Built Environment Curtin University Sustainability Policy InstituteKent StBentley 6102Western Australia Harry Butler Institute Murdoch UniversityMurdoch 6150Western Australia Atmospheric Sciences Department Institute of AstronomyGeophysics and Atmospheric SciencesUniversity of Sao PauloSao Paulo 05508-090Brazil Met Office FitzRoy RoadExeter EX13PBUK Department of Psychiatry and Nuffield Department of Primary Care Health Sciences Wadham CollegeUniversity of OxfordOxfordUK Centre for Interdisciplinary Methodologies University of WarwickWarwickUK School of Architecture Southeast University2 SipailouNanjing 210096China Cranfield University School of WaterEnvironment and EnergyCranfield MK430ALUK Plants PhotosynthesisSoil ClusterSchool of BiosciencesUniversity of SheffieldSheffield S102TNUK UK Centre for Ecology&Hydrology Environment Centre WalesDeiniol RoadBangor LL572UWUK Air Quality Studies Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong KongChina Department of Forestry and Environmental Resources Faculty Excellence Program for Leadership in Public ScienceNorth Carolina State UniversityChancellorRaleighNC 27695USA Departments of Architecture&Civil Engineering and Chemical EngineeringUniversity of BathBath BA27AYUK School of Architecture University of NevadaLas VegasNV 89154USA Department of Tropical Ecosystems Functioning Center of Nuclear Energy in AgricultureUniversity of São PauloPiracicaba 13416-000Sao PauloBrazil School of Ocean Sciences Bangor UniversityMenai BridgeAnglesey LL595 ABUK International Laboratory for Air Quality and Health Science and Engine

The combination of urbanization and global warming leads to urban overheating and compounds the frequency and intensity of extreme heat events due to climate ***,the risk of urban overheating can be mitigated by urban green-blue-grey infrastructure(GBGI),such as parks,wetlands,and engineered greening,which have the potential to effectively reduce summer air *** many reviews,the evidence bases on quantified GBGI cooling benefits remains partial and the practical recommendations for implementation are *** systematic literature review synthesizes the evidence base for heat mitigation and related co-benefits,identifies knowledge gaps,and proposes recommendations for their implementation to maximize their *** screening 27,486 papers,202 were reviewed,based on 51 GBGI types categorized under 10 main *** GBGI(green walls,parks,street trees)have been well researched for their urban cooling ***,several other GBGI have received negligible(zoological garden,golf course,estuary)or minimal(private garden,allotment)*** most efficient air cooling was observed in botanical gardens(5.0±3.5℃),wetlands(4.9±3.2℃),green walls(4.1±4.2℃),street trees(3.8±3.1℃),and vegetated balconies(3.8±2.7℃).Under changing climate conditions(2070–2100)with consideration of RCP8.5,there is a shift in climate subtypes,either within the same climate zone(e.g.,Dfa to Dfb and Cfb to Cfa)or across other climate zones(e.g.,Dfb[continental warm-summer humid]to BSk[dry,cold semi-arid]and Cwa[temperate]to Am[tropical]).These shifts may result in lower efficiency for the current GBGI in the *** the importance of multiple services,it is crucial to balance their functionality,cooling performance,and other related co-benefits when planning for the future *** global GBGI heat mitigation inventory can assist policymakers and urban planners in prioritizing effective interventions to reduce the risk of urban overheating,fi

关键词： estuary walls extreme

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Approaches to identifying drug resistance mechanisms to clinically relevant treatments in childhood rhabdomyosarcoma

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Cancer Drug Resistance 2022年第1期5卷 80-89页

作者： Samson Ghilu christopher L.Morton Angelina v.vaseva Siyuan Zheng Raushan T.Kurmasheva Peter J.Houghton Department of Molecular Medicine Greehey Children’s Cancer Research InstituteUT HealthSan AntonioTX 78229USA Department of Surgery St.Jude Children’s Research HospitalMemphisTN 38105USA Department of Epidemiology and Biostatistics Greehey Children’s Cancer Research InstituteUT HealthSan AntonioTX 78229USA

Aim:Despite aggressive multiagent protocols,patients with metastatic rhabdomyosarcoma(RMS)have poor *** a recent high-risk trial(ARST0431),25% of patients failed within the first year,while on therapy and 80% had tumor progression within 24 ***,the mechanisms for tumor resistance are essentially *** we explore the use of preclinical models to develop resistance to complex chemotherapy regimens used in ***:A Single Mouse Testing(SMT)protocol was used to evaluate the sensitivity of 34 RMS xenograft models to one cycle of vincristine,actinomycin D,cyclophosphamide(vAC)*** response was determined by caliper measurement,and tumor regression and event-free survival(EFS)were used as endpoints for *** tumors at regrowth were transplanted into recipient mice,and the treatment was repeated until tumors progressed during the treatment period(i.e.,became resistant).At transplant,tumor tissue was stored for biochemical and omics ***:The sensitivity to vAC of 34 RMS models was *** varied from 3 weeks to>20 *** models were classified as having intrinsic resistance,intermediate sensitivity,or high sensitivity to vAC *** to vAC was developed in multiple models after 2-5 cycles of therapy;however,there were examples where sensitivity remained unchanged after 3 cycles of ***:The SMT approach allows for in vivo assessment of drug sensitivity and development of drug resistance in a large number of RMS *** such,it provides a platform for assessing in vivo drug resistance mechanisms at a“population”level,simulating conditions in vivo that lead to clinical *** vAC-resistant models represent“high-risk”tumors that mimic a preclinical phase 2 population and will be valuable for identifying novel agents active against vAC-resistant disease.

关键词： Rhabdomyosarcoma patient-derived xenografts combination therapy intrinsic drug resistance acquired drug resistance

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A multifaceted approach towards understanding the peculiar behavior of(α)-hydroxyiminophosphonates

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Organic Chemistry Frontiers 2022年第1期9卷 173-182页

作者： Thomas Toupy christopher Kune Kristof van Hecke Loïc Quinton Jean-Christophe M.Monbaliu Center for Integrated Technology and Organic Synthesis MolSys Research UnitUniversity of LiègeB-4000 Liège(Sart Tilman)Belgium Mass Spectrometry Laboratory MolSys Research UnitUniversity of LiègeB-4000 Liège(Sart Tilman)Belgium XStruct Department of ChemistryGhent UniversityKrijgslaan 281-S3B-9000 GhentBelgium

The peculiar isomer-selective reduction of(α)-hydroxyiminophosphonates(oxime isomers)into(α)-hydroxyaminophosphonate(hydroxylamine)derivatives is presented.A library of 16(α)-hydroxyiminophosphonates is prepared and studied via a unique multifaceted approach involving the interplay of NMR,XRD,MS,IM-MS and computational chemistry *** combination of NMR,XRD and HPLC enables the seamless separation,identification and quantification of the oxime isomers(E/Z).Tandem MS(MS/MS)enables the determination of the fragmentation patterns for both *** energy breakdown curves highlight the order of apparition of the fragments as well as their related energy of fragmentation,demonstrating that the strength of the C–P bond in the Z isomers is much weaker than in the E *** chemistry demonstrates that favorable protonation site is isomer-dependent with the phosphonate moiety being the favorable protonation site for the E isomers,while protonation occurs preferentially on the amino moiety for Z isomers regardless of the phosphite *** combination of these various methods led an unprecedented level of characterization of oxime isomers,providing a better uderstanding of the isomer-dependent behavior of(α)-hydroxyiminophosphonates.

关键词： isomers phosphonate moiety

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