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Projected near-surface wind speed and wind energy over Central Asia using dynamical downscaling with bias-corrected global climate models

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Advances in Climate Change Research 2024年第4期15卷 669-679页

作者： Jin-Lin ZHA Ting CHUAN Yuan QIU Jian WU De-Ming ZHAO Wen-Xuan FAN Yan-Jun LYU Hui-Ping JIANG Kai-Qiang DENG miguel andres-martin Cesar AZORIN-MOLINA Deliang CHEN Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunming 650091China Key Laboratory of Regional Climate and Environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Center for Energy&Environmental Policy Research Beijing Institute of Technology Beijing 100081China Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Centro de Investigaciones Sobre Desertificacion Consejo Superior de Investigaciones Cientificas(CIDECSIC-UV-Generalitat Valenciana)ClimateAtmosphere and Ocean Laboratory(Climatoc-Lab)Moncada 46113Spain Regional Climate Group.Deparment of Earth Sciences University of GothenburgGothenburg 40530Sweden

Wind energy development in Central Asia can help alleviate drought and fragile ***,current studies mainly used the global climate models(GCMs)to project wind speed and *** simulated biases in GCMs remain prominent,which induce a large uncertainty in the projected *** reduce the uncertainties of projected near-surface wind speed(NSW)and better serve the wind energy development in Central Asia,the Weather Research and Forecasting(WRF)model with bias-corrected GCMs was *** with the outputs of GCMs,dynamical downscaling acquired using the WRF model can better capture the high-and low-value centres of NSWS,especially those of Central Asia's ***,the simulated NSWS bias was also *** future changes in wind speed and wind energy,under the Representative Concentration Pathway 4.5(RCP4.5)scenario,NSWS during 2031-2050 is projected to decrease compared with that in *** magnitude of NSwS reduction during 2031-2050 willreach 0.1 m s^(-1).and the maximum reduction is projected to occur over the central and western regions(>0.2 m s^(-1)).Furthermore,future wind power density(WPD)can reveal nonstationarity and strong volatility,although a downward trend is expected during *** addition,the higher frequency of wind speeds at the turbine hub height exceeding 3.0 m s^(-1)can render the plain regions more suitable for wind energy development than the mountains from 2031 to *** study can serve as a guide in gaining insights into future changes in wind energy across Central Asia and provide a scientific basis for decision makers in the formulation of policies for addressing climate change.

关键词： Near-surface wind speed Wind power density Dynamical downscaling Central Asia WRF

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Endotoxin-induced alterations of adipose tissue function:a pathway to bovine metabolic stress

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1391-1407页

作者： miguel Chirivi G.andres Contreras Department of Large Animal Clinical Sciences Michigan State UniversityEast LansingMIUSA

During the periparturient period, dairy cows exhibit negative energy balance due to limited appetite and increased energy requirements for lactogenesis. The delicate equilibrium between energy availability and expenditure puts cows in a state of metabolic stress characterized by excessive lipolysis in white adipose tissues(AT), increased production of reactive oxygen species, and immune cell dysfunction. Metabolic stress, especially in AT, increases the risk for metabolic and inflammatory diseases. Around parturition, cows are also susceptible to endotoxemia. Bacterial-derived toxins cause endotoxemia by promoting inflammatory processes and immune cell infiltration in different organs and systems while impacting metabolic function by altering lipolysis, mitochondrial activity, and insulin sensitivity. In dairy cows, endotoxins enter the bloodstream after overcoming the defense mechanisms of the epithelial barriers, particularly during common periparturient conditions such as mastitis, metritis, and pneumonia, or after abrupt changes in the gut microbiome. In the bovine AT, endotoxins induce a pro-inflammatory response and stimulate lipolysis in AT, leading to the release of free fatty acids into the bloodstream. When excessive and protracted, endotoxin-induced lipolysis can impair adipocyte's insulin signaling pathways and lipid synthesis. Endotoxin exposure can also induce oxidative stress in AT through the production of reactive oxygen species by inflammatory cells and other cellular components. This review provides insights into endotoxins' impact on AT function, highlighting the gaps in our knowledge of the mechanisms underlying AT dysfunction, its connection with periparturient cows' disease risk, and the need to develop effective interventions to prevent and treat endotoxemia-related inflammatory conditions in dairy cattle.

关键词： Adipose tissue dysfunction Endotoxin Inflammation Insulin resistance

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Cerium,manganese and cerium/manganese ceramic monolithic *** of VOCs and PM removal

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Journal of Rare Earths 2016年第7期34卷 675-682页

作者： COLMAN-LERNER Esteban PELUSO miguel andres SAMBETH Jorge THOMAS Horacio Centro de Investigacion y Desarrollo en Ciencias Aplicadas"Dr.Jorge J.Ronco"CONICET CCT La Plata UNLP47 N0 257(1900)La PlataArgentina Fac.de Ciencias Exactas UNLP47 and 115(1900)La PlataArgentina Centro de Investigaciones del Medio Ambiente(CIMA).Facultad de Ciencias Exactas UNLP.47y 115.1900-La Plata Planta Piloto Multiproposito PLAPIMU CICPBA-UNLPC.Centenario and 506M ***Argentina

Ceramic supported cerium, manganese and cerium-manganese catalysts were prepared by direct impregnation of aq precursor, and characterized by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, Brunauer-Emmett-Teller rn （BET）, temperature programmed reduction （Ha-TPR）, X-ray photoelectron spectroscopy （XPS） acidity measurements and elec conductivity. The catalytic activity was evaluated for volatile organic compounds （VOC）（ethanol, methyl ethyl ketone and tol oxidation. Additionally, catalysts were tested in particulate matter （PM） combustion. The characterization results indicated that Ce was in the form of Ce4＋ and Ce3＋, and Mn existed in the form of Mn4＋ and Mn3＋ on the surface of the Mn/AC sample and in the of Mn4＋ in the Ce/Mn/AC monolith. VOC oxidation results revealed that the Ce/Mn/AC sample showed an excellent perforr compared with ceramic supported CeO2 （Ce/AC） and MnO, （Mn/AC） samples. The PM combustion was also higher on Ce/M monoliths. The enhanced catalytic activity was mainly attributed to the Ce and Mn interaction which enhanced the acidity, cond ity and the reducibility of the oxides.

关键词： monolith VOCs MnOx Ce PM clays rare earths

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Fast preparation route to high-performances textured Sr-doped Ca_3Co_4O_9 thermoelectric materials through precursor powder modification

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Science China Materials 2019年第3期62卷 399-406页

作者： miguel Angel Torres Gustavo Garcia Idoia Urrutibeascoa Maria Antonieta Madre Juan Carlos Diez andres Sotelo ICMA (CSIC-Universidad de Zaragoza) Centro Stirling S. Coop. Mondragon Unibertsitatea

This work presents a short and very efficient method to produce high performance textured Ca_3Co_4O_9 thermoelectric materials through initial powders modification. Microstructure has shown good grain orientation, and low porosity while slightly lower grain sizes were obtained in samples prepared from attrition milled powders. All samples show the high density of around 96% of the theoretical *** similar characteristics are reflected in, approximately,the same electrical resistivity and Seebeck coefficient values for both types of samples. However, in spite of similar power factor(PF) at low temperatures, it is slightly higher at high temperature for the attrition milled samples. On the other hand, the processing time reduction(from 38 to 2 h) when using attrition milled precursors, leads to lower mechanical properties in these samples. All these data clearly point out to the similar characteristics of both kinds of samples, with a drastic processing time decrease when using attrition milled precursors, which is of the main economic importance when considering their industrial production.

关键词： ceramics oxides hot-pressing electrical properties power factor

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Are ATXN2 variants modifying our understanding about neural pathogenesis,phenotypes,and diagnostic?

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Neural Regeneration Research 2022年第11期17卷 2445-2447页

作者： Jose miguel Laffita-Mesa martin Paucar Per Svenningsson Department of Clinical Neuroscience(CNS) Karolinska Universitetssjukhuset

ATXN2 one gene with multiple phenotype effects:ATXN2 gene encodes a cytosolic protein(ataxin-2)with pleiotropic functions(see below).This gene contains a number of exonic Cytosine-Adenine-Guanine(CAG)-repeats which encodes a polyglutamine tract(polyQ)in the N-terminal intrinsically disordered region(IDR)of the ***2CAG repeats are interrupted by CAA codons which is relevant only for DNA and RNA but not for protein since CAA also encodes glutamine(Q).

关键词： pathogenesis neural interrupted

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Subwavelength polarization optics via individual and coupled helical traveling-wave nanoantennas

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Light(Science & Applications) 2019年第1期8卷 486-493页

作者： Mengjia Wang Roland Salut Huihui Lu miguel-Angel Suarez Nicolas martin Thierry Grosjean FEMTO-ST Institute UMR 6174 Univ.Bourgogne Franche-Comte CNRSBesanconFrance Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China

Light polarization control is a key factor in modern *** advances in surface plasmon manipulation have introduced the prospect of more compact and more efficient devices for this ***,the current plasmonic-based polarization optics remain much larger than the wavelength of light,which limits the design degrees of ***,we present a plasmonic traveling-wave nanoantenna using a gold-coated helical carbon nanowire end-fired with a dipolar aperture *** nonresonant helical nanoantenna enables tunable polarization control by swirling surface plasmons on the subwavelength scale and taking advantage of the optical spin–orbit *** closely packed helical traveling-wave nanoantennas(HTNs)are demonstrated to locally convert an incoming light beam into four beams of tunable polarizations and intensities,with the ability to impart different polarization states to the output beams in a controllable ***,by near-field coupling four HTNs of opposite handedness,we demonstrate a subwavelength waveplate-like structure providing a degree of freedom in polarization control that is unachievable with ordinary polarization optics and current metamaterials.

关键词： polarization antenna optics

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Dual role of FGF in proliferation and endoreplication of Drosophila tracheal adult progenitor cells

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Journal of Molecular Cell Biology 2020年第1期12卷 32-41页

作者： Cristina de miguel Josefa Cruz David martin Xavier Franch-Marro Institute of Evolutionary Biology(Consejo Superior de Investigaciones Cientificas-Universitat Pompeu Fabra) Passeig Maritim de la Barceloneta 3708003 BarcelonaSpain

Adult progenitor cells activation is a key event in the formation of adult *** Drosophilat formation of abdominal adult trachea depends on the specific activation of tracheal adult progenitors(tracheoblasts)at the Tr4 and Tr5 spiracular *** of these tracheoblasts generates a pool of tracheal cells that migrate toward the posterior part of the trachea by the activation of the branchless/fibroblast growth factor(Bnl/FGF)signaling to form the abdominal adult ***,we show that,in addition to migration,Bnl/FGF signaling,mediated by the transcription factor Pointed,is also required for tracheoblast *** tracheoblast activation relies on the expression of the FGF ligand bnl in their nearby ***,we show that,in the absence of the transcription factor Cut(Ct),Bnl/FGF signaling induces endoreplication of tracheoblasts partially by promoting fizzy-related ***,our results suggest a dual role of Bnl/FGF signaling in tracheoblasts,inducing both proliferation and endoreplication,depending on the presence or absence of the transcription factor Ct,respectively.

关键词： FGF trachea adult progenitors cut proliferation endoreplication Pnt Fzr

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Time-expanded phase-sensitive optical time-domain reflectometry

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Light(Science & Applications) 2021年第3期10卷 443-454页

作者： miguel Soriano-Amat Hugo F.martins Vicente Duran Luis Costa Sonia martin-Lopez miguel Gonzalez-Herraez Maria R.Fernandez-Ruiz Departamento de Electronica Universidad de AlcalaEscuela Politecnica Superior28805 MadridSpain Instituto deóptica"Daza de Valdes" IO-CSICC/Serrano 12128006 MadridSpain GROC-UJI Institute of New Imaging TechnologiesUniversity Jaume112071 CastellonSpain

Phase-sensitive optical time-domain reflectometry(CDOTDR)is a well-established technique that provides spatiotemporal measurements of an environmental variable in real *** unique capability is being leveraged in an everincreasing number of applications,from energy transportation or civil security to *** date,a wide number of different approaches have been implemented,providing a plethora of options in terms of performance(resolution,acquisition bandwidth,sensitivity or range).However,to achieve high spatial resolutions,detection bandwidths in the GHz range are typically required,substantially increasing the system cost and ***,we present a novel OOTDR approach that allows a customized time expansion of the received optical ***,the presented technique reaches cm-scale spatial resolutions over t km while requiring a remarkably low detection bandwidth in the MHz *** approach relies on the use of dual-comb spectrometry to interrogate the fibre and sample the backscattered *** phase-spectral coding is applied to the employed combs to maximize the signal-to-noise ratio of the sensing scheme.A comparison of the proposed method with alternative approaches aimed at similar operation features is provided,along with a thorough analysis of the new *** results demonstrate a radically novel high-resolution OOTDR scheme,which could promote new applications in metrology,borehole monitoring or aerospace.

关键词： optical phase expanded

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Cenozoic diatreme field in Chubut （Argentina） as evidence of phreatomagmatic volcanism accompanied with extensive Patagonian plateau basalt volcanism？

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Episodes 2007年第3期30卷 217-223页

作者： Karoly Nemeth Ulrike martin miguel J. Haller Viviana I. Alric Institute of Natural Resources Volcanic Risk Solutions M_asse_y Uniyer_sity Palmerston North New Zealand. Department of Mapping Geological Institute of Hungary Stefainia 14 Budapest H- 1143 Hungary. Geo-Zentrum an der KTB Am Bohrturm 2 92670 Windischeschenbach Germany. Universidad Nacional de la Patagonea San Juan Bosco Bvard Brown 3700 （9120） Puerto Ma.dryn Argentina. Centro Nacional Patagenico-CONICET Bvard. Brown 3500 （9120） Puerto Madryn Argentina.

In Patagonia, Argentina, at the northern border of the Patagonian Cenozoic mafic plateau lava fields, newly discovered diatremes stand about I00 m above the sur- rounding plain. These diatremes document phreato- magmatic episodes associated with the formation of the volcanic fields. The identified pyroclastic and intrusive rocks are exposed lower diatremes of former phreato- magmatic volcanoes and their feeding dyke systems. These remotely located erosional remnants cut through Paleozoic granitoids and Jurassic/Cretaceous alternating siliciclastic continental successions that are rela-

关键词：新生界火山地下水湿生植物玄武岩

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Brillouin expanded time-domain analysis based on dual optical frequency combs

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Light(Science & Applications) 2024年第8期13卷 1534-1544页

作者： Jae Hyeong Youn Kwang Yong Song Sonia martin-Lopez miguel Gonzalez-Herraez María R.Fernández-Ruiz Dept.of Physics Chung-Ang UniversitySeoulKorea Dept.of Electronics Universidad de AlcaláMadridSpain

Brillouin Optical Time-Domain Analysis(BOTDA)is a widely-used distributed optical fiber sensing technology employing pulse-modulated pump waves for local information retrieval of the Brillouin gain or loss *** spatial resolution of BOTDA systems is intrinsically linked to pulse duration,so high-resolution measurements demand high electronic bandwidths inversely proportional to the *** paper introduces Brillouin Expanded Time-Domain Analysis(BETDA)as a modified BOTDA system,simultaneously achieving high spatial resolution and low detection *** two optical frequency combs(OFCs)with different frequency intervals as pump and probe,local Brillouin gain spectra are recorded by their spectral beating traces in an expanded time domain.A 2-cm-long hotspot located in a 230m single-mode fiber is successfully measured in the time domain with a detection bandwidth of less than 100 kHz using dual OFCs with tailored spectral phase,line spacing,and bandwidth.

关键词： pump optical fiber

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