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Hydrogeochemical and isotopic assessment of the origin of NO_(3)^(−)and N-NH_(3)contents in the aquifer located in a closed lacustrine volcano-sedimentary basin in the metropolitan area of Mexico city

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Acta Geochimica 2024年第4期43卷 719-736页

作者： Jose Ivan morales-Arredondo Maria Aurora Armienta Hernandez Joel Edmundo Ortega-Gutierrez Elisa cuellar Ramirez Natural Resources Department Institute of GeophysicsNational Autonomous University of MexicoCiudad Universitaria No.3000Col.Copilco UniversidadCoyoacán Delegation04360 MexicoCDMXMexico Instituto Politecnico Nacional ***án 55La Laguna Ticoman07340 MexicoCDMXMexico Benemérita Universidad Autónoma de Puebla ciudad Universitaria Col.San ManuelPueblaPueMexico

To explain the presence and spatial distribution of NO_(3)^(−)and N-NH_(3)in the Aquifer of the Metropolitan Area of Mexico city(AMAMc),a hydrogeochemical and isotopic analysis using^(13)c DIc(as well as the stable isotopes^(18)O and^(2)H)in groundwater was *** aquifer is located in an old closed lacustrine volcano-sedimentary basin;some wells hosted in the semi-confined zone contain high N-NH_(3)concentrations,while others present NO_(3)^(−)contents in the recharge zones(hosted in an oxidizing environment).In this study,a change in the isotopic signature(primarily in^(18)O and^(2)H)was observed from the recharge zones to the basin center in some of the wells with high NO_(3)^(−)concentrations,this behavior can be attributed to evaporation during the incorporation of recently infiltrated *** addition,the results for^(13)c(along with ^(2) H)in wells with the highest N-NH_(3)concentrations exhibited an atypically broad range of *** indicated the occurrence of hydrogeochemical and/or biochemical processes in the aquifer(in an oxidizing or reducing environment),such as organic degradation,bacterial decomposition(primarily in the ancient Lake Texcoco and which acts as a natural sink for carbon,nitrogen,sulfur,and phosphorus),besides rock weathering and dissolution,which may be responsible for a very marked isotopic modification of the^(13)c(and,to a lesser extent,2 H).Methanotrophic bacterial activity and methanogenic activity may be related to N-NH_(3)removal processes by oxidation and residual water incorporation respectively,whereas the increase in the NO_(3)^(−)content in some wells is due to the recent contribution of poor-quality water due to contamination.

关键词： 18 O and^(13)c isotopes Iron Hydrogeochemical processes Nitrate Nitrogen species

Geochemical elements in suspended particulate matter of Ensenada de La Paz Lagoon,Baja california Peninsula,Mexico:Sources,distribution,mass balance and ecotoxicological risks

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Journal of Environmental Sciences 2024年第2期136卷 422-436页

作者： Sandra Soledad morales-García Pilar de Acacia Pérez-Escamilla Suresh Babu Sujitha Pichaimani Godwyn-Paulson Andrés Felipe Zuniga-cabezas Muthuswamy Ponniah Jonathan Instituto Politécnico Nacional(IPN) Centro Mexicano para la Producción más Limpia(CMPL)Av.Acueducto s/nCol.Barrio la Laguna TicománDel Gustavo A.MaderoC.P.07340Ciudad de MéxicoMexico Instituto Politécnico Nacional(IPN) Escuela Superior de Ingeniería y Arquitectura(ESIA)Unidad Ticomán***án 600Delg.Gustavo A.MaderoC.P.07340Ciudad de México(CDMX)Mexico Instituto Politécnico Nacional(IPN) Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo(CIIEMAD)Calle 30 de Junio de 1520Barrio la Laguna TicománDel.Gustavo A.MaderoC.P.07340Ciudad de MéxicoMéxico

The present study aimed to evaluate multi-element concentrations(Al,As,ca,cd,co,cr,cu,Fe,Mg,Mn,Mo,Ni,Pb,Sr)in suspended particulate material(SPM)collected from Ensenada de La Paz(ELP)lagoon,Baja california Sur,Mexico in two different periods(September and May)to comprehend their origin,geochemical behavior,mass transfer and associated ecotoxicological *** 24 hr variation coefficient of volumetric SPM levels were found to be 51.7%in September and 40.5%in May,signifying the effects of oceanic *** calculated enrichment factor(EF)values for all the studied elements were of higher magnitude because of the high surface area and oxide nature of SPM,and in this study,Mo had the highest EF of 46.77 probably due to its origin from continental *** the ecotoxicological perspective,the integrated toxic risk index revealed low toxic risk to the benthic ***,the mean-ERM-Quotient calculated using the particulate concentrations of As,cd,cr,cu,Ni,Pb indicated 9%probability of toxicity to *** comprehensive geochemical and ecotoxicological assessment of particulate metal concentrations in the ELP lagoon signify low to moderate contamination.

关键词： Suspended particulate material Heavy metals Risk assessment Mass transfer Ensenada de La Paz

Integrative Analysis of Transcriptome and Phenolic compounds Profile Provides Insights into the Quality of Soursop (Annona muricata L.) Fruit

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1717-1732页

作者： Yolotzin Apatzingán Palomino-Hermosillo Ángel Elpidio Díaz-Jasso Rosendo Balois-morales Verónica AlhelíOchoa-Jiménez Pedro Ulises Bautista-Rosales Guillermo Berumen-Varela Unidad de Tecnología de Alimentos-Secretaría de Investigación y Posgrado Universidad Autónoma de Nayarit.Ciudad de la Cultura SNTepic63000NayaritMéxico Programa Académico de Biología Unidad Académica de AgriculturaUniversidad Autónoma de NayaritKm.9.Carretera Tepic-CompostelaXalisco63780NayaritMéxico Estancias Posdoctorales-consejo Nacional de Humanidades Ciencias y TecnologíasCoordinación de Apoyos a Becarios e InvestigadoresDirección de PosgradoCiudad de México03940México

Soursop(Annona muricata L.)is a tropical fruit highly valued for its uniqueﬂavor,nutritional value,and health-promoting *** ripening process of soursop involves complex changes in gene expression and metabo-lite accumulation,which have been studied using various omics *** analysis has provided insights into the regulation of key genes involved in ripening,while metabolic compound analysis has revealed the presence of numerous bioactive compounds with potential health beneﬁ***,the integration of transcrip-tome and metabolite compound data has not been extensively explored in ***,in this paper,we present a comprehensive analysis of the transcriptome and phenolic compound proﬁles of soursop during *** integration analysis showed that the genes and phenolic compounds were mainly involved in the starch and sucrose metabolism pathways during soursop ***,the phenolic compounds Kaempferol 3-Q-galactoside,Procyanidin c1,Procyanidin trimmer c1,and m-coumaric,as well as the genes Ubiquitin-like protein 5(UBL5_ARATH),ATP-dependent zinc metalloprotease FTSH8(FTSH8_ORYSJ),Zinc transporter 4(ZIP4_AR-ATH),Thioredoxin-like 3-1(TRL31_ORYSJ),Mitogen-activated protein kinase YODA(YODA_ARATH),R-man-delonitrile lyase-like(MGL_ARATH),26s protease regulatory subunit 6A homolog(PRS6_SOLLc),cytochrome P45072A13(c7A13ARATH),cytochrome P45084A1(c84A1_ARATH)and Homoserine O-trans-acetylase(MET2-ORYSJ)were correlated and differentially accumulated and expressed,*** study provides new insights into the molecular mechanisms underlying soursop ripening and may contribute to the development of strategies for improving the nutritional quality and shelf life of this important fruit.

关键词： Bioinformatics data integration genes metabolites postharvest storage ripening

Are Ni/and Ni5Fe1/biochar catalysts suitable for synthetic natural gas production?A comparison with g-Al2O3 supported catalysts

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Green Energy & Environment 2023年第3期8卷 744-756页

作者： M.Gonzalez-castano c.morales J.c.Navarro de Miguel J.H.Boelte O.Klepel J.I.Flege H.Arellano-García Department of Process and Plant Technology Brandenburg University of Technology(BTU)Cottbus-SenftenbergPlatz der Deutschen 1Cottbus03046Germany Applied Physics and Semiconductor Spectroscopy Brandenburg University of Technology Cottbus-SenftenbergKonrad-Zuse-Strasse 1Cottbus03046Germany Department of Inorganic chemistry Institute of Materials Science of SevilleConsejo Superior de Investigaciones Cientificas(CSIC)Universidad de Sevilla(US)Avenida Americo Vespucio 49Seville41092Spain Institute of Materials chemistry Brandenburg University of Technology Cottbus–SenftenbergUniversitatsplatz 1SenftenbergD-01968Germany

Among challenges implicit in the transition to the post-fossil fuel energetic model,the finite amount of resources available for the technological implementation of cO_(2) revalorizing processes arises as a central *** development of fully renewable catalytic systems with easier metal recovery strategies would promote the viability and sustainability of synthetic natural gas production circular *** Ni and NiFe catalysts supported over g-Al_(2)O_(3) oxide as reference materials,this work evaluates the potentiality of Ni and NiFe supported biochar catalysts for cO_(2) *** development of competitive biochar catalysts was found dependent on the creation of basic sites on the catalyst *** lower Turn Over Frequencies than Ni/Al catalyst,the absence of basic sites achieved over Ni/c catalyst was related to the depleted catalyst *** NiFe catalysts,analogous Ni_(5)Fe_(1) alloys were constituted over both alumina and biochar *** highest specific activity of the catalyst series,exhibited by the NiFe/c catalyst,was related to the development of surface basic sites along with weaker NiFe-c interactions,which resulted in increased Ni0:NiO surface populations under reaction *** summary,the present work establishes biochar supports as a competitive material to consider within the future low-carbon energetic panorama.

关键词： Biochar catalysts carbon catalysts Ni catalysts NiFe alloy Bimetallic catalysts Synthetic natural gas cO_(2)methanation

Organ Abscission in Plants: With Special Emphasis on Bell Pepper

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1467-1484页

作者： Ramiro Reyes-castro Héctor G.Núñez-Palenius Juan I.Valiente-Banuet María E.Sosa-morales Blanca E.Orosco-Alcalá Rafael Guzmán-Mendoza Graciela M.L.Ruiz-Aguilar Rogelio costilla-Salazar Life Sciences Division Universidad de GuanajuatoIrapuato36500México School of Engineering and Sciences Tecnologico de MonterreyQuerétaro76130México

Bell pepper(capsicum annuum L.),along with potato and tomato,is one of the three most cultivated vegetables in the *** pepper is worldwide accepted due to its characteristics of color,smell,ﬂavor,and *** pepper is also considered a nutritious food due to its vitamin and antioxidant *** Mexico,bell pepper production has a high value because it is grown for the international markets,particularly the United States of ***,the abscission ofﬂowers and fruits is a factor that limits the yield,hinders the planning of activities,and causes a variation in the prices of *** to the importance of this process,in this work we did a bibliometric analysis and literature review of scientiﬁc advances for the understanding of the abscission pro-cess in plants,and in particular for the bell ***,we introduce new perspectives that would help direct future research about organ abscission in ***,the lack of research that would further clarify abscis-sion process in the bell pepper plant is discussed.

关键词： capsicum annuum abscission zone plant growth regulators environmental factors

Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications

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chinese Physics c 2021年第7期45卷 1-19页

作者：安丰鹏 A.B.Balantekin M.Bishai S.Blyth 曹国富曹俊常劲帆张昀陈和生陈少敏陈羽陈义学程捷成兆侃 J.J.cherwinka 朱明中 J.P.cummings O.Dalager 邓凡水丁雅韵 M.V.Diwan T.Dohnal D.Dolzhikov J.Dove M.Dvorak D.A.Dwyer J.P.Gallo M.Gonchar 龚光华宫辉 M.Grassi 顾文强郭竞渊郭磊郭新恒郭宇航郭子溢 R.W.Hackenburg S.Hans 何苗 K.M.Heeger 衡月昆贺远强熊怡胡貝楨胡健润胡涛胡焯钧黄翰雄黄金浩黄性涛黄永波 P.Huber D.E.Jaffe 任國綸季筱璐季向盼 R.A.Johnson D.Jones 康丽 S.H.Kettell S.Kohn M.Kramer T.J.Langford J.Lee 李曉菁雷瑞霆 R.Leitner 梁干庄李飞李慧玲李进京李秋菊李茹慧黎山峰 S.c.Li 李卫东李小男李学潜李玉峰李志兵梁昊林政儒林贵林林盛鑫凌家杰 L.Littenberg B.R.Littlejohn 刘金昌刘江来刘佳熙陆昌国路浩奇陆锦标马帮争马续波马骁妍马宇倩 R.c.Mandujano c.Marshall K.T.McDonald R.D.McKeown 孟月 J.Napolitano D.Naumov E.Naumova T.M.T.Nguyen J.P.Ochoa-Ricoux A.Olshevskiy 潘孝儒 J.Park S.Patton 彭仁杰潘振声齐法制祁鸣钱鑫任杰 c.morales reveco R.Rosero B.Roskovec 阮锡超 H.Steiner 孙吉良 T.Tmej K.Treskov 謝雲皓 c.E.Tull B.Viren V.Vorobel 王正祥王俊王萌王乃彦王瑞光王为王维王玺王玉漫王贻芳王铮王喆王志民魏瀚宇韦良红温良剑 K.Whisnant c.GWhite 黄显诺 E.Worcester 吴帝儒武方亮吴群吴文杰夏冬梅谢章权邢志忠许杭锟徐吉磊徐彤薛涛杨长根杨雷杨玉梓姚海峰叶梅叶铭芳杨炳麟余泓钊于泽源岳保彪 V.Zavadskyi 曾珊曾裕达占亮张超张飞洋张宏浩张家文张清民张石其张玄同张玉美张一心张园园张志坚张子平张智勇赵洁赵润泽周莉庄红林邹佳恒 Institute of Modern Physics East China University of Science and TechnologyShanghai 200337 University of Wisconsin MadisonWisconsin 53706 Brookhaven National Laboratory UptonNew York 11973 Department of Physics Nnational Taiwan UniversityTaipei Institute of High Energy Physics Beijing 100049 National United University Miao-Li Department of Engineering Physics Tsinghua UniversityBeijing 100048 Shenzhen University Shenzhen 518061 Sun Yat-Sen(Zhongshan)University Guangzhou 510275 North china Electric Power University Beijing 102206 chinese University of Hong Kong Hongkong 999077 Siena college LoudonvilleNew York 12211 Department of Physics and Astronomy University of CaliforniaIrvineCalifornia 92697 University of Science and Technology of china Hefei 230022 charles University Faculty of Mathematics and PhysicsPrague Joint Institute for Nuclear Research DubnaMoscow Region Department of Physics University of Illinois at Urbana-ChampaignUrbanaIllinois 61801 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 Beijing Normal University Beijing 100875 Department of Nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Wright Laboratory and Department of Physics Yale UniversityNew HavenConnecticut 06520 china Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250002 Guangxi University No.100 Daxue East RoadNanning 530004 center for Neutrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics NCTUHsinchu Department of Physics University of CincinnatiCincinnatiOhio 45221 Department of Physics College of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of Technology Dongguan 523808 Department of Physics University of CaliforniaBerkeleyCalifornia 94720 Department of Physics The University of Hong KongPokfulamHongkong 999077 School of Physics Nankai UniversityTianjin 300071 Department o

The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision *** positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment,in combination with the fission rates of fissile isotopes in the reactor,is used to extract the positron energy spectra resulting from the fission of specific *** information can be used to produce a precise,data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya *** positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding *** results are obtained with other unfolding methods.A technique to construct a data-based prediction of the reactor antineutrino energy spectrum is proposed and *** the reactor fission fractions,the technique can predict the energy spectrum to a 2%*** addition,we illustrate how to perform a rigorous comparison between the unfolded antineutrino spectrum and a theoretical model prediction that avoids the input model bias of the unfolding method.

关键词： reactor antineutrino energy spectrum Daya Bay application

Peptidomic analysis of whey protein hydrolysates and prediction of their antioxidant peptides

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Food Science and Human Wellness 2022年第2期11卷 349-355页

作者： Jesus morales García chibuike c.Udenigwe Jorge Duitama Andrés Fernando González Barrios Grupo de Diseño de Productos y Procesos(GDPP) Department of Chemical and Food EngineeringUniversidad de los AndesBogotá111711Colombia School of Nutrition Sciences University of OttawaOttawaOntarioK1N 6N5Canada Systems and computing Engineering Department Universidad de Los AndesBogotá111711Colombia

Enzymatic hydrolysis of proteins is a breakdown process of peptide bond in proteins,releasing some peptides with potential biological *** studies on enzymatic hydrolysis of whey proteins have not identified the complete peptide profiles after *** this study,we reconstructed a profile of peptides from whey hydrolysates with two enzymes and different processing *** also developed an ensemble machine learning predictor to classify peptides obtained from whey hydrolysis.A total of 2572 peptides were identified over three process conditions with two enzymes in duplicate.499 peptides were classified and chosen as potential antioxidant peptides from whey *** peptides classified as antioxidants in the hydrolysates had a proportion of 13.1%-24.5%regarding all peptides *** results facilitate the selection of promising peptides involved in the antioxidant properties during the enzymatic hydrolysis of whey proteins,aiding the discovery of novel antioxidant peptides.

关键词： Whey hydrolysate Antioxidant peptide Peptidomics Prediction

Search for electron-antineutrinos associated with gravitational-wave events GW150914,GW151012,GW151226,GW170104,GW170608,GW170814,and GW170817 at Daya Bay

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chinese Physics c 2021年第5期45卷 190-201页

作者： F.P.An A.B.Balantekin H.R.Band M.Bishai S.Blyth G.F.cao J.cao J.F.chang Y.chang H.S.chen S.M.chen Y.chen Y.X.chen J.cheng Z.K.cheng J.J.cherwinka M.c.chu J.P.cummings O.Dalager F.S.Deng Y.Y.Ding M.V.Diwan T.Dohnal J.Dove M.Dvorak D.A.Dwyer J.P.Gallo M.Gonchar G.H.Gong H.Gong W.Q.Gu J.Y.Guo L.Guo X.H.Guo Y.H.Guo Z.Guo R.W.Hackenburg S.Hans M.He K.M.Heeger Y.K.Heng A.Higuera Y.K.Hor Y.B.Hsiung B.Z.Hu J.R.Hu T.Hu Z.J.Hu H.X.Huang X.T.Huang Y.B.Huang P.Huber D.E.Jaffe K.L.Jen X.L.Ji X.P.Ji R.A.Johnson D.Jones L.Kang S.H.Kettell S.Kohn M.Kramer T.J.Langford J.Lee J.H.c.Lee R.T.Lei R.Leitner J.K.c.Leung F.Li J.J.Li Q.J.Li S.Li S.c.Li W.D.Li X.N.Li X.Q.Li Y.F.Li Z.B.Li H.Liang c.J.Lin G.L.Lin S.Lin J.J.Ling J.M.Link L.Littenberg B.R.Littlejohn J.c.Liu J.L.Liu c.Lu H.Q.Lu J.S.Lu K.B.Luk X.B.Ma X.Y.Ma Y.Q.Ma c.Marshall D.A.Martinez caicedo K.T.MeDonald R.D.McKeown Y.Meng J.Napolitano D.Naumov E.Naumova J.P.Ochoa-Ricoux A.OIshevskiy H.-R.Pan J.Park S.Patton J.c.Peng c.S.J.Pun F.Z.Qi M.Qi X.Qian N.Raper J.Ren c.morales reveco R.Rosero B.Roskovec X.c.Ruan H.Steiner J.L.Sun T.Tmej K.Treskov W.-H.Tse c.E.Tull B.Viren V.Vorobel c.H.Wang J.Wang M.Wang N.Y.Wang R.G.Wang W.Wang W.Wang X.Wang Y.Wang Y.F.Wang Z.Wang Z.Wang Z.M.Wang H.Y.Wei L.H.Wei L.J.Wen K.Whisnant c.G.White H.L.H.Wong E.Worcester D.R.Wu F.L.Wu Q.Wu W.J.Wu D.M.Xia Z.Q.Xie Z.Z.Xing J.L.Xu T.Xu T.Xue c.G.Yang L.Yang Y.Z.Yang H.F.Yao M.Ye M.Yeh B.L.Young H.Z.Yu Z.Y.Yu B.B.Yue S.Zeng Y.Zeng L.Zhan c.Zhang F.Y.Zhang H.H.Zhang J.W.Zhang Q.M.Zhang X.T.Zhang Y.M.Zhang Y.X.Zhang Y.Y.Zhang Z.J.Zhang Z.P.Zhang Z.Y.Zhang J.Zhao L.Zhou H.L.Zhuang J.H.Zou Instiute of Modern Physics East China University of Science and TechnologyShanghai 200237 University of Wisconsin MadisonWisconsin 53706 Wright Laboratory and Department of Physics Yale UniversityNew HavenConnecticut 06520 Brookhaven National Laboratory UptonNew York 11973 Department of Physics National Taiwan UniversityTaipei Institute of High Energy Physics Beijing 100049 National United University Miao-Li Department of Engineering Physics Tsinghua UniversityBejing 100084 Shenzhen University Shenzhen 518060 Sun Yat-Sen(Zhongshan)University Guangzhou North china Electric Power University Bejjing 102206 chinese University of Hong Kong Hong Kong 999077 Siena college LoudonvilleNew York 12211 Department of Physics and Astronomy University of CaliforniaIrvineCaliformia 92697 University of Science and Technology of china Hefei 230026 charles University Faculty of Mathematics and PhysicsPrague Department of Physics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 Joint Institute for Nuclear Research DubnaMoscow Region Beijing Normal University Beijing 100875 Department of Nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Department of Physics University of HoustonHoustonTexas 77204 china Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250100 Guangxi University Nanning 530004 center for Neutrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics National Chiao-Tung UniversityHsinchu Department of Physics University of CincinnatiCincinnatiOhio 45221 Department of Physies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of Technology Dongguan 523808 Department of Physics University of CaliforniaBerkeleyCalifornia 94720 Department of Physics The University of Hong KongPokfulamHong Kong 999077 School

The establishment of a possible connection between neutrino emission and gravitational-wave(GW)bursts is important to our understanding of the physical processes that occur when black holes or neutron stars *** the Daya Bay experiment,using the data collected from December 2011 to August 2017,a search was per-formed for electron-antineutrino signals that coincided with detected GW events,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used three time windows of±10,±500,and±1000 s relative to the occurrence of the GW events and a neutrino energy range of 1.8 to 100 MeV to search for correlated neutrino *** detected electron-antineutrino candidates were consistent with the expected background rates for all the three time *** monochromatic spectra,we found upper limits(90%confidence level)of the electron-antineutrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 MeV to 8.0×10^(7)cm^(-2)at 100 MeV for the three time w *** the assumption of a Fermi-Dirac spectrum,the upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for the three time windows.

关键词： grav itational waves electron-antineutrinos fluence upper limit

On the complexity of Expansive Measures

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Acta Mathematica Sinica,English Series 2015年第9期31卷 1501-1507页

作者： c.A.morales Instituto de Matem'atica Universidade Federal do Rio de Janeiro

We prove that the existence of positively expansive measures for continuous maps on compact metric spaces implies the existence of e 〉 0 and a sequence of （m, e）-separated sets whose cardinalities go to infinite as m →∞. We then prove that maps exhibiting such a constant e and the positively expansive maps share some properties.

关键词： Positively expansive measure complexity compact metric space