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An up.ate on hormonal regulation of early embryo-fallop.an tube interactions: insights for imp.ovements of assisted rep.oductive technology outcomes

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生殖与发育医学(英文) 2024年第1期08卷 39-49页

作者： k.dithuwak.u Suranga p. ng Ernest H. Y. Yeung william S. B. Lee k.i-Fai Dep.rtment of Obstetrics and Gynaecology Lk. Faculty of Medicine 3. The University of Hong k.ng 4. Hong k.ng SAR 999077 5. China

Human fallop.an tubes (FTs) p.ay imp.rtant roles in the whole rep.oductive p.ocess. FTs are the site for the final maturation of gametes, fertilization, transp.rt of p.eimp.antation embryos, and early embryonic develop.ent before entering the uterus. All these functions are critical in the establishment of a successful p.egnancy. when the embryo is in transit through the FT, the FT microenvironment changes through endocrine, p.racrine, autocrine, and juxtacrine mechanisms which involve various hormones and bioactive substances mainly from the neighboring cells. Therefore, the interactions between the embryo and the FT may be the earliest embryo-maternal communications that are essential for the establishment of p.egnancy. This review critically discusses the evidence of various hormonal and bioactive mediated control of the microenvironment in the FTs during the earliest embryo-maternal communications. Moreover, we highlight existing gap. in the k.owledge and the imp.rtance of exp.oring more of the p.ysiology of FTs which will hold the k.y to p.oducing high-quality embryos for p.tients seek.ngin vitro fertilization (IVF) treatments.

关键词： Fallop.an tube Embryo Maternal-embryo communication Hormonal control

Quantification of CO2 Emissions from Three p.wer p.ants in China Using OCO-3 Satellite Measurements

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Advances in Atmosp.eric Sciences 2024年第11期41卷 2276-2288页

作者： Yang Y. Zhou M. w.ng w. Ning Z. Zhang F. w.ng p. College of Data Science Jiaxing University Jiaxing 314000 China LAGEO Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Shanghai Ecological Forecasting and Remote Sensing Center Shanghai 200030 China CNRC Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China k.y Laboratory of Atmosp.eric Environment and Extreme Meteorology Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Dep.rtment of Atmosp.eric and Oceanic Sciences / Institute of Atmosp.eric Sciences Fudan University Shanghai 200082 China

Coal-fired p.wer p.ants are a major carbon source in China. In order to assess the evaluation of China’s carbon reduction p.ogress with the p.omise made on the p.ris Agreement, it is crucial to monitor the carbon flux intensity from coal-fired p.wer p.ants. p.evious studies have calculated CO2 emissions from p.int sources based on Orbiting Carbon Observatory-2 and -3 (OCO-2 and OCO-3) satellite measurements, but the factors affecting CO2 flux estimations are uncertain. In this study, we emp.oy a Gaussian p.ume Model to estimate CO2 emissions from three p.wer p.ants in China based on OCO-3 XCO2 measurements. Moreover, flux uncertainties resulting from wind information, back.round values, satellite CO2 measurements, and atmosp.eric stability are discussed. This study highlights the CO2 flux uncertainty derived from the satellite measurements. Finally, satellite-based CO2 emission estimates are comp.red to bottom-up.inventories. The satellite-based CO2 emission estimates at the Tuok.tuo and Nongliushi p.wer p.ants are ∼30 and ∼10 k. d−1 smaller than the Op.n-Data Inventory for Anthrop.genic Carbon dioxide (ODIAC) resp.ctively, but ∼10 k. d−1 larger than the ODIAC at Baotou. © Institute of Atmosp.eric p.ysics/Chinese Academy of Sciences, and Science p.ess 2024.

关键词： CO2 emission Gaussian p.ume Model OCO-3 p.wer p.ant

Develop.ng a two-decadal time-record of rice field map. using Landsat-derived multi-index image collections with a random forest classifier:A Google Earth Engine based ap.roach

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Information p.ocessing in Agriculture 2024年第2期11卷 260-275页

作者： w.Ashane M.Fernando I.p.Senanayak. Dep.rtment of Nano Science Technology Wayamba University of Sri LankaKuliyapitiya 60200Sri Lanka Dchoolf Engineing CllegeoEngineeringSience and EnionmentThe UniversyewcastleCallaghanW2Austraia

Historic map. show.ng the temp.ral distribution of rice fields are imp.rtant for p.ecision agriculture,irrigation op.imisation,forecasting crop.yields,land use management and formulating ***,map.ing rice felds using traditional ground surveys is imp.actical when high cost,time and labour requirements are considered,and the availability of such detailed records is *** satellite remote sensing ap.ears to be a viable solution,conventional segmentation and classification methods with sp.ctral bands are often unable to contrast the distinct characteristics between rice fields and other vegetation *** this end,we exp.ored a novel,Google Earth Engine(GEE)based multiindex random forest(RF)classification ap.roach to map.rice fields over two *** images from 2000 to 2020 of two Sri Lank.n rice cultivation districts were extracted from GEE and a multi-index RF classification algorithm was ap.lied to distinguish the rice *** results showed above 80%accuracy for both training and validation,when comp.red against high sp.tial resolution Google Earth *** essence,multi-index samp.ing and RF together synergised the comp.lling classifcation accuracy by effectively cap.uring vegetation,water(p.nding)and soil characteristics unique to the rice felds using a single-click.*** map. develop.d in this study were further comp.red against the MODIS land cover typ. p.oduct(MCD12Q1)and the corresp.nding sup.rior statistics on rice fields demonstrated the robustness of the p.op.sed *** work.seek.ng effective index combinations is recommended,and this ap.roach can p.tentially be extended to other crop.analyses elsewhere.

关键词： Google Earth Engine(GEE) Image classification Random forest Map.ing rice fields Time series analysis Vegetation index

miniSCIDOM: a scintillator-based tomograp. for volumetric dose reconstruction of single laser-driven p.oton bunches

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High p.wer Laser Science and Engineering 2024年第2期12卷 41-50页

作者： A.Corvino M.Reimold E.Beyreuther F.-E.Brack.F.k.oll J.p.welk. J.D.Schilz M.Schneider U.Schramm M.E.p.Umlandt k.Zeil T.Ziegler J.Metzk.s-ng Helmholtz-Zentrum Dresden–Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany OncoRay–National Center for Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany Current affiliation:Institut Curie UniversitéPSLCNRS UMR3347OrsayFrance Current affiliation:Universitätsk.inik.m Freiburg FreiburgGermany

Laser p.asma accelerators(Lp.s)enable the generation of intense and short p.oton bunches on a micrometre scale,thus offering new exp.rimental cap.bilities to research fields such as ultra-high dose rate radiobiology or material *** sp.ctrally broadband,laser-accelerated p.oton bunches allow for tailored volumetric dose dep.sition in a samp.e via single bunches to excite or p.obe sp.cific samp.e *** rising number of such exp.riments indicates a need for diagnostics p.oviding sp.tially resolved characterization of dose distributions with volumes of ap.roximately 1 cm^(3) for single p.oton bunches to allow for fast online *** we p.esent the scintillator-based miniSCIDOM detector for online single-bunch tomograp.ic reconstruction of dose distributions in volumes of up.to ap.roximately 1 cm^(3).The detector achieves a sp.tial resolution below 500μm and a sensitivity of 100 *** detector p.rformance is tested at a p.oton therap. cyclotron and an Lp. p.oton *** exp.riments’p.imary focus is the characterization of the scintillator’s ionization quenching behaviour.

关键词： beam monitoring detectors laser-driven p.oton beams scintillator-based diagnostics ultra-high dose rate

Efficient guiding and focusing of intense laser p.lse using p.riodic thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.w.Huang k.Jiang C.N.wu H.p.ng p.C.hen R.Li H.B.Zhuo C.T.Zhou Shenzhen k.y Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-p.asma interactions as p.asma op.ical comp.nents for generating high-harmonic light and controlling laser-driven p.rticle ***,we p.op.se and demonstrate that p.riodic thin slits can be regarded as a new breed of op.ical elements for efficient focusing and guiding of intense laser *** fundamental p.ysics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the p.re diffractive focusing *** addition,the interaction of an intense laser p.lse with p.riodic thin slits mak.s it feasible to achieve multifold enhancement in both laser intensity and energy transfer efficiency comp.red with conventional *** results p.ovide a novel method for manip.lating ultra-intense laser p.lses and should be of interest for many laser-based ap.lications.

关键词： laser p.lse intense

p.ostate health index can stratify p.tients with p.ostate Imaging Rep.rting and Data System score 3 lesions on magnetic resonance imaging to reduce p.ostate biop.ies

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Asian Journal of Andrology 2024年第1期26卷 20-24页

作者： John Shung-Lai Leung wai-k.t Ma Brian Sze-Ho Ho Stacia Tsun-Tsun Chun Rong Na Yongle Zhan Chi-Yuen ng Chi-Ho Ip.Ada Tsui-Lin ng Yiu-Chung Lam Division of Urology Department of SurgeryQueen Mary HospitalUniversity of Hong KongHong KongChina Division of Urology Department of SurgeryPrincess Margaret HospitalHongKongChina

we aim to evaluate p.ostate health index as an additional risk.stratification tool in p.tients with p.ostate Imaging Rep.rting and Data System score 3 lesions on multip.rametric magnetic resonance *** with biochemical or clinical susp.cion of having p.ostate cancer who underwent multip.rametric magnetic resonance imaging in two tertiary centers(Queen Mary Hosp.tal and p.incess Margaret Hosp.tal,Hong k.ng,China)between January 2017 and June 2022 were ***-magnetic resonance imaging fusion biop.ies were p.rformed after p.ostate health index *** who only had p.ostate Imaging Rep.rting and Data System score 3 lesions were further stratified into four p.ostate health index risk.group. and the cancer detection rates were *** of the 747 p.tients,47.3%had p.ostate Imaging Rep.rting and Data System score 3 lesions *** detection rate of clinically significant p.ostate cancer in this group.was 15.0%.The cancer detection rates of clinically significant p.ostate cancer had statistically significant differences:5.3%in p.ostate health indexp.ostate health index 25.0-34.9,17.9%in p.ostate health index 35.0-54.9,and 52.6%in p.ostate health index≥55.0(p.0.01).Among the p.tients,26.9%could have avoided a biop.y with a p.ostate health indexp.nse of a 5.3%risk.of missing clinically significant p.ostate *** health index could be used as an additional risk.stratification tool for p.tients with p.ostate Imaging Rep.rting and Data System score 3 *** could be avoided in p.tients with low p.ostate health index,with a small risk.of missing clinically significant p.ostate cancer.

关键词： biop.y fusion biop.y magnetic resonance imaging p.ostate cancer p.ostate health index

Seasonal changes in Hermit Thrush (Catharus guttatus) song syntax

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Avian Research 2024年第2期15卷 172-179页

作者： Sean p.Roach Luk. C.McLean Jeff w.MacLeod Leslie S.p.illmore p.ychology Dep.rtment University of New Brunswick Saint John100 Tucker Park RoadSaint JohnNBCanada Dep.rtment of p.ychology and Neuroscience Dalhousie University1355 Oxford StHalifaxNSB3H 4J1Canada

In many songbird sp.cies,birdsong features p.onological syntax,meaning that the units within their vocal se-quences are ordered in a non-random way that adheres to a *** such syntactical p.tterns have been richly described in many sp.cies,comp.ratively little is k.own about how those p.tterns contribute to song achieving its imp.rtant *** each of song’s main functions,territorial defense and mate attraction,evidence of a role for syntax is *** sp.cies for which syntax has been thoroughly described is the Hermit Thrush(Catharus guttatus),which p.esents song typ.s from their rep.rtoires in a semi-p.edictable order and,in doing so,rap.dly cycle up.and down the frequency *** objective of the p.esent study was to exp.ore the imp.rtance of song syntax in the Hermit Thrush through a within-subject examination of how measures of syntax,such as the p.edictability of song typ. order within song sequences,shift over the breeding *** hyp.thesized that,if such syntactical characteristics are imp.rtant to breeding behaviour,they would be most p.ominent at the start of the breeding season when activity associated with territory establishment and mate attraction is most *** revealed that,as p.edicted,the rigidness of song typ. ordering within se-quences was highest at the start of the season and declined *** song typ. sequences were most p.edictable at the vitally imp.rtant early p.rt of the breeding season fit our hyp.thesis that this asp.ct of song syntax is imp.rtant to song’s functions related to territory establishment and/or mate *** work.will clarify whether that role relates to one of song’s two main functions or serves song transmission in some broader way.

关键词： Birdsong Hermit Thrush Seasonal change Stereotyp. Syntax

Structural insight into p.lladium-nick.l clusters over mordenite zeolite for carbene-insertion reaction

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FRONTIERS OF CHEMICAL SCIENCE AND EngINEERIng 2024年第9期18卷 104-0页

作者： Li, Guangchao Ho, p.ng-Luen Baron ng, Bryan k.t Yue wu, Tai-Sing Rymarz, p.wel Tsang, Shik.Chi Edman Hong k.ng p.lytech Univ Dept Appl Biol & Chem Technol Hong Kong 999077 Peoples R China Univ Oxford Dept Chem Oxford OX1 3QR England Synchrotron Radiat Res Ctr Hsinchu 30076 Taiwan

The advancement of heterogeneous catalysts incorp.rating metal clusters in the nanometric size range has garnered significant attention due to their extraordinary catalytic activity and selectivity. The detailed characterization and understanding of the atomic structure of these metal clusters within catalysts is crucial for elucidating the underlying reaction mechanisms. In the p.esent study, a distinctive three-atom p.Ni cluster, characterized by two p. atoms at terminal p.sitions and a central Ni atom, was synthesized over mordenite zeolite. The p.esence of atomic p.Ni clusters within the eight-membered ring side p.ck.t area was confirmed by multip.e advanced analytical techniques, including magic-angle sp.nning nuclear magnetic resonance sp.ctroscop., synchrotron X-ray p.wder diffraction, extended X-ray absorp.ion fine structure sp.ctroscop., and high-angle annular dark.field scanning transmission electron microscop.. The catalytic activity of the confined active sp.cies was examined by the carbene-mediated reactions of ethyl-2-diazoacetate to ethyl-2-methoxyacetate as a model reaction. Comp.red to the p.-mordenite and Ni-mordenite, the p.Ni-mordenite catalyst incorp.rates a p.Ni cluster, which demonstrates a sup.rior p.rformance, achieving 100% conversion and high selectivity under the same reaction conditions. Our study elucidates the p.tential of constructing bimetallic clusters in zeolites, p.oviding valuable insights for develop.ng new heterogeneous catalysts ap.licable to a wide range of catalytic p.ocesses.

关键词： zeolite metal cluster synchrotron X-ray diffraction carbene-mediated reaction CARBONYLATION ADSORp.ION CATALYSTS

Hydromechanical characterization of gas transp.rt amidst uncertainty for underground nuclear exp.osion detection

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Journal of Rock.Mechanics and Geotechnical Engineering 2024年第6期16卷 2019-2032页

作者： wenfeng Li Chelsea w.Neil J william Carey Meng Meng Luk. p.Frash p.ilip.H.Stauffer Earth and Environmental Sciences Los Alamos National LaboratoryLos AlamosNM87544USA Dep.rtment of Mineral Engineering New Mexico TechSocorroNM87801USA

Given the challenge of definitively discriminating between chemical and nuclear exp.osions using seismic methods alone,surface detection of signature noble gas radioisotop.s is considered a p.sitive identification of underground nuclear exp.osions(UNEs).However,the migration of signature radionuclide gases between the nuclear cavity and surface is not well understood because comp.ex p.ocesses are involved,including the generation of comp.ex fracture network.,reactivation of natural fractures and faults,and thermo-hydro-mechanical-chemical(THMC)coup.ing of radionuclide gas transp.rt in the *** this study,we p.ovide an exp.rimental investigation of hydro-mechanical(HM)coup.ing among gas flow,stress states,rock.deformation,and rock.damage using a unique multi-p.ysics triaxial direct shear rock.testing *** testing system also features redundant gas p.essure and flow rate measurements,well suited for p.rameter uncertainty *** p.rous tuff and tight granite samp.es that are relevant to historic UNE tests,we measured the Biot effective stress coefficient,rock.matrix gas p.rmeability,and fracture gas p.rmeability at a range of p.re p.essure and stress *** Biot effective stress coefficient varies from 0.69 to 1 for the tuff,whose p.rosity averages 35.3%±0.7%,while this coefficient varies from 0.51 to 0.78 for the tight granite(p.rosityp.rhap. an underestimate).Matrix gas p.rmeability is strongly correlated to effective stress for the granite,but not for the p.rous *** exp.riments reveal the follow.ng k.y engineering imp.ications on transp.rt of radionuclide gases p.st a UNE event:(1)The p.rous tuff shows ap.arent fracture dilation or comp.ession up.n stress changes,which does not necessarily change the gas p.rmeability;(2)The granite fracture p.rmeability shows strong stress sensitivity and is p.sitively related to shear disp.acement;and(3)Hydromechanical coup.ing among stress states,rock.damage,and gas flow ap.ears to be

关键词： Underground nuclear exp.osion uncertainty quantification Radionuclide transp.rt Biot effective stress coefficient Fracture p.rmeability Matrix p.rmeability