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Acta Geologica Sinica(English Edition) 2003年第1期77卷 36-43页

作者： ariel boven Laboratory of Geochronology Vrije Universiteit Brussel Pleinlaan 2 1050 Brussels Belgium

The dike swarm of lamprophyres at Pishan on the SW margin of the Tarimterrane is composed of ultra-potassic lamprophyres that have intruded into the Proterozoichornblende schists. ^(40)Ar/^(39)Ar dating data suggest that the isochron ages for phlogopite andwhole rock separates of the lamprophyres are 231.7+-0.3 Ma and 228.5+-0.3 Ma, *** data indicate that the dikes were derived from a subduction-related or metasomatizedmantle. During the Middle-Late Triassic the western Kunlun area entered the post-orogeny period, andthus the occurrence of the dike swarm in the study area may have been controlled by underplating.

关键词： Tarim western Kunlun Triassic lamprophyre Ar-Ar age

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Ultra-violet laser probe measurement of 40Ar/39Ar age profile in phlogopite

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Detecting LLM-assisted writing in scientific communication:Are we there yet?

中国科学院地质与地球物理研究所2004学术年会

作者： boven ariel Laboratory of Geochronology.Vrije Universiteit Brussel Pleinlaan 21050 BrusselsBelgium

Ultra-Violet Laser Ablation Microprobe(UVLAMP) extraction technique enables the direct investigation of Ar-Ar age profile in crystals,and yields more information on rates and durations of geological process than conventional single time *** flakes from lamprophyre at Pishan dyke in western Kunlun were dated by using an UV laser(λ=213 nm) microprobe with spot *** results show good agreement with those from the conventional Ar/Ar step heating *** indicates that the Ar isotopes are distributed homogenously in the phlogopite and the UVLAMP can be a powerful tool in the study of thermal history.

关键词： laser probe lamprophyre phlogopite 40Ar/39Ar

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Journal of Data and Information Science 2024年第3期9卷 4-13页

作者： Teddy Lazebnik ariel Rosenfeld Department of Mathematics Ariel UniversityArielIsrael Department of Cancer Biology Cancer InstituteUniversity College LondonLondonUK Department of Information Science Bar Ilan UniversityRamat GanIsrael

Large Language Models(LLMs),exemplified by ChatGPT,have significantly reshaped text generation,particularly in the realm of writing *** ethical considerations underscore the importance of transparently acknowledging LLM use,especially in scientific communication,genuine acknowledgment remains infrequent.A potential avenue to encourage accurate acknowledging of LLM-assisted writing involves employing automated *** evaluation of four cutting-edge LLM-generated text detectors reveals their suboptimal performance compared to a simple ad-hoc detector designed to identify abrupt writing style changes around the time of LLM *** contend that the development of specialized detectors exclusively dedicated to LLM-assisted writing detection is *** detectors could play a crucial role in fostering more authentic recognition of LLM involvement in scientific communication,addressing the current challenges in acknowledgment practices.

关键词： LLM-assisted writing Scientific communication Writing style

Sex-dependent resilience to extreme drought events: implications for climate change adaptation of a South American endangered tree species

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Ecological Processes 2024年第2期13卷 48-60页

作者： Sergio Piraino Martín ariel Hadad Yanina Antonia Ribas-Fernández Fidel Alejandro Roig Laboratorio de Dendrocronología e Historia Ambiental (IANIGLA CONICET ) Facultad de Ciencias Agrarias Universidad Nacional de Cuyo Laboratorio de Dendrocronología de Zonas áridas (CIGEOBIO CONICET ) Gabinete de Geología Ambiental (INGEO UNSJ) Hémera Centro de Observación de la Tierra Facultad de Ciencias Universidad Mayor

Background Recent changes in climatic trends are resulting in an increased frequency and intensity of extreme events, with unknown effect on ecosystem dynamics in the near future. Extreme drought episodes are recognized as disturbance factors capable of modifying forest dynamics and tree growth. Within this context, dioecious tree species may be impacted by climatic extremes, affecting male/female proportions and, consequently, reproductive processes and species persistence. Therefore, there is an urgent need for species-specific assessments of growth tolerance to extreme dry spells in dioecious tree species, to establish effective conservation strategies for these particular natural resources. Araucaria araucana(araucaria), an endangered dioecious Patagonian tree species, has recently undergone decay and mortality episodes in response to increasing dry climatic conditions. While sex-dependent tolerance to extreme drought episodes has been assessed in the species' humid distribution range, there is still a lack of information on the gender-based resilience of trees growing in the drier environments of the species' *** We reconstructed, through dendrochronological methods, the sex-dependent response of 105 araucaria individuals(55 female and 50 male trees) to five regional extreme dry spells employing a set of different indices. Resistance, recovery period, and average growth reduction of standardized tree-ring growth were examined, analysing the effect of biotic(sex, pre-drought stem tree growth) and abiotic(local climatic conditions before, during, and after extreme climatic episodes) factors on tree *** Sex influences only the species resistance to climatic disturbance, with male individuals showing lower tolerance to extreme drought events. Pre-drought radial growth rates and local meteorological conditions preceding, during, and following extreme dry spells strongly modulated araucaria radial growth resilience regardless of tree s

关键词： Araucaria Climate change Dendrochronology Extreme drought event Resilience

DEM analysis of the influence of stirrer design on die filling with forced powder feeding

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Particuology 2024年第5期88卷 107-115页

作者： Chao Zheng Edward Yost ariel R.Muliadi Nicolin Govender Ling Zhang Chuan-Yu Wu School of Chemistry and Chemical Engineering University of SurreyGuildfordGU2 7XHUnited Kingdom Small Molecule Pharmaceutics GenentechInc.One DNA WaySouth San FranciscoCA94080USA

Die filling is a critical stage during powder compaction,which can significantly affect the product quality and *** this paper,a forced feeder is introduced attempting to improve the filling performance of a lab-scale die filling *** die filling process is analysed with a graphics processing units(GPU)enhanced discrete element method(DEM).Various stirrer designs are assessed for a wide range of process settings(i.e.,stirrer speed,filling speed)to explore their influence on the die filling performance of free-flowing *** results show that die filing with the novel helical-ribbon(i.e.,type D)stirrer design exhibits the highest filling ratio,implying that it is the most robust stirrer design for the feeder configuration ***,die filling performance with the type D stirrer design is a function of the stirrer speed and the filling speed.A positive variation of filling ratio(ηf>0%)can be ensured over the whole range of filling speed by adjusting the stirrer speed(i.e.,increasing the stirrer speed).The approach used in this study can not only help understand how the stirrer design affects the die filling performance but also guide the optimization of feeder system and process settings.

关键词： Discrete element method Die filling Forced feeding Stirrer design GPU computing

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青藏高原东缘钾质岩浆活动与高原隆升的关系

青藏高原东缘钾质岩浆活动与高原隆升的关系

Elements of Electromagnetic Matter

2004年全国岩石学与地球动力学研讨会

作者：刘嘉麒贺怀宇郭正府 ariel boven Paul Pasteels Jan Hertogen 中国科学院地质与地球物理研究所中国科学院地质与地球物理研究所中国科学院地质与地球物理研究所 Vrije Universiteit Brussel B-1050 Brussel-Elsene Belgium Vrije Universiteit Brussel B-1050 Brussel-Elsene Belgium Katllodjeke Universiteit Leuven B-3001 Leuven-Heverlee

＜正＞在青藏高原东缘沿哀劳山—红河断裂带及其邻近地区,广泛分布着新生代钾质煌斑岩、正长斑岩、粗面岩、粗安岩和碧玄岩等,它们以岩脉、岩墙、岩珠等小型火成岩体产于云南的祥云、大理、姚安、丽江、德钦,四川的盐源、盐边,甘肃的...

＜正＞在青藏高原东缘沿哀劳山—红河断裂带及其邻近地区,广泛分布着新生代钾质煌斑岩、正长斑岩、粗面岩、粗安岩和碧玄岩等,它们以岩脉、岩墙、岩珠等小型火成岩体产于云南的祥云、大理、姚安、丽江、德钦,四川的盐源、盐边,甘肃的礼县、宕昌,青海的囊谦、杂多和西藏的芒康等地。其Ar-Ar年龄介于30-36 Ma,峰值处于35Ma。这些火成岩体无论是岩石地球化学特征还是形成时代都与青藏高原内部的火成岩,特别是羌塘地区的火山岩密切相关,它们在时空有一定的规律性。比如,在高原内部从南到北可分四个火成（火山）岩带:早期的酸性岩浆活动主要发生在冈底斯山脉,时间从56.2 Ma到38.2 Ma,集中于49 Ma-44Ma;接着是富钾质的碱性岩浆活动,时间从38～25Ma,集中于35 Ma,主要发生在羌塘和高原东部边缘地区;向北与之毗邻的

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Journal of Modern Physics 2024年第3期15卷 250-270页

作者： Viktor ariel Independent Researcher Modiin Israel

Originally, Maxwell attempted to express his electromagnetic theory using four-dimensional mathematics of quaternions. Maxwell’s equations were later re-written in a three-dimensional real vector form, which is how the theory is presented today. Thus, an interesting question remains whether we can derive electromagnetic equations analytically from the basic mathematical principles of quaternion algebra and calculus, resulting in general and analytic matter equations. This question seems highly intriguing. Previously, we developed a mathematical theory of time using a normed division algebra of real quaternions [1]. In this study, we extend the theory of time by presenting a new analytical derivation of electromagnetic matter equations using the calculus of real quaternions, as originally intended by Maxwell. Therefore, we propose a novel mathematical definition of the quaternion path derivative using the properties of quaternion division. We then apply the quaternion derivative to an external electromagnetic potential and assume that the first quaternion derivative represents the quaternion electromagnetic force. Next, we assume that the second derivative, or quaternion Laplacian operator, applied to an external electromagnetic potential leads to the quaternion electromagnetic current density. The new analytical expressions are similar to the original empirical Maxwell equations, except for an additional scalar electric field, which allows for a novel formulation of Ohm’s conductivity law. We demonstrate that the resulting analytical equations can be written equivalently using either electromagnetic potentials or fields. Finally, we summarize the key postulates and equations of the new electromagnetic matter theory, which were based on normed division algebra and the calculus of quaternions. The resulting theory appears to be a useful analytical enhancement of the original Maxwell equations, and therefore, seems highly comprehensive, logical, and compelling.

关键词： Maxwell’s Equations Relativistic Electrodynamics Quaternion Calculus

40Ar/39Ar Age and Geological Significance of Lamprophyres in Pishan on the SW Margin of the Tarim Terrane,NW China

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Extreme drought triggers parallel shifts in wood anatomical and physiological traits in upper treeline of the Mediterranean Andes

中国科学院地质与地球物理研究所2003学术年会

作者： HE Huaiyu,GUO Zhengfu,WANG Songshan,HAO Jie,LIU Qiang Institute of Geology and Geophysics,Chinese Academy of Sciences,P.O.Box 9825, Beijing 100029,China and ariel boven Laboratory of Geochronology,Vrije Universiteit Brussel,Pleinlaan 2, 1050 Brussels,Belgium

The dike swarm of lamprophyres at Pishan on the SW margin of the Tarim terrane is composed of ultra-potassic lamprophyres mat have intruded into the Proterozoic hornblende ***/Ar dating data suggest that the isochron ages for phlogopite and whole rock separates of the lamprophyres are 231.7±0.3 Ma and 228.5±0.3 Ma, *** data indicate that the dikes were derived from a subduction-related or metasomatized mantle. During the Middle-Late Triassic the western Kunlun area entered the post-orogeny period,and thus the occurrence of the dike swarm in the study area may have been controlled by underplating.

关键词： Tarim western Kunlun Triassic lamprophyre Ar-Ar age

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Ecological Processes 2024年第1期13卷 132-143页

作者： Luiz Santini Jr. Dylan Craven Daigard Ricardo Ortega Rodriguez Manolo Trindade Quintilhan Stephanie Gibson-Carpintero Cristina Aravena Torres Fidel A.Roig ariel A.Mu?oz Alejandro Venegas-Gonzalez Hémera Centro de Observación de la Tierra Universidad Mayor GEMA Center for Genomics Ecology and Environment Universidad Mayor Data Observatory Foundation ANID Technology Center Depart-ment of Forest Sciences ESALQ-University of Sao Paulo Department of Plant Biology Institute of Biology University of Campinas Instituto de Geografía Universidad Nacional Autónoma de México (UNAM) Argentine Institute of Nivology Glaciology and Environmental Sciences(IANIGLA CONICET ) Institute of Geography Pontificia Universidad Católica de Valparaíso Instituto de Ciencias Agroalimentarias Animales y Ambientales (ICA3) Universidad de O'Higgins

Background Treeline ecotones of Mediterranean ecoregions have been affected by the increasing intensity and severity of droughts. Even though the effect of droughts on forest dynamics has been widely documented, knowledge is relatively scarce of how extreme climate episodes affect the hydraulic structure and, therefore, the phys-iology of woody plants. The Mediterranean Andes have experienced an uninterrupted period of drought since 2010, including an extremely dry year in 2019 with approximately 80% rainfall deficit. Here, we investigated shifts in wood anatomical and physiological traits of Kageneckia angustifolia, an endemic treeline species, in response to this drought *** We evaluated the xylem plasticity of three K. angustifolia populations across their natural distribution(31–35° SL) based on anatomical(vessel structure and distribution) and physiological(intrinsic water-use efficiency) variables in the tree rings. We focused on the period 2000–2020 that corresponds to before the megadrought(2000–2007),(ii) megadrought(2008–2018) and(iii) hyperdrought(2019–2020). The variables were annualized and analyzed by linear mixed-effects *** Our results provide insights to the anatomical and physiological mechanisms underlying the resilience of treeline forests to persistent droughts in central Chile. We found that the extreme drought in 2019–2020 triggered shifts in vessel size and frequency that increased hydraulic safety. These significant shifts in vessel traits occurred in parallel with a decrease in pit aperture area and an increase in water-use efficiency, further increasing the resilience of K. angustifolia to extreme drought *** Our results revealed coordinated shifts in vessel size and frequency and water-use efficiency in response to the megadrought, thereby reducing vulnerability to hydraulic failure. The apparent resilience of K. angustifolia to extreme droughts suggests that this adaptation to drought stress may incre

关键词： Dendro-anatomy Kageneckia angustifolia Xylem vulnerability Drought Climate change

利用21CMA射电低频阵聆听来自轴子暗物质的回响（英文）

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Science Bulletin 2024年第19期69卷 2971-2973页

作者： ariel Arza 郭铨武雷杨峤立杨小龙袁强祝斌 Department of Physics and Institute of Theoretical Physics Nanjing Normal University Shanghai Astronomical Observatory Chinese Academy Sciences College of Physics and Optoelectronic Engineering Department of PhysicsJinan University Shanghai Key Laboratory of Space Navigation and Positioning Techniques Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences School of Astronomy and Space Science University of Science and Technology of China Department of Physics Yantai University

The axion is nowadays one of the leading candidates to compose the dark matter of the universe.A great experimental effort has been performed by the so-called axion haloscopes experiments among others (for complete reviews on updated axion phenomenology,see Ref.[1]).In this paper,we take the new axion dark matter echo idea proposed in Ref.[2].This technique aims to send out of space a powerful beam of electromagnetic radiation in the radio/microwave frequency range and search for the electromagnetic echo produced by stimulated decay of ambient axion dark matter.

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