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Conditioned duality between supercontinental’assembly’and’breakup’LIPs

Geoscience Frontiers 2020年第5期11卷 1635-1649页

作者： martin b.Klausen Department of Earth Sciences Stellenbosch UniversityPrivate Bag X1MatielandSouth Africa

A compilation of 178 more precise ages on 10 potential Large Igneous Provinces(LIPs)across southern Africa,is compared to Earth’s supercontinental cycles,where 5 more prominent LIP-events all formed during the assembly of supercontinents,rather than during *** temporal bias is confirmed by a focused review of field relationships,where these syn-assembly LIPs formed behind active continental arcs;whereas,the remaining postassembly-and likely breakup-related-LIPs never share such *** the possibility of two radically different LIP-types,only the two younger breakup events(the Karoo LIP and Gannakouriep Suite)produced basalts with more enriched asthenospheric OIb-signatures;whereas,all assembly LIPs produced basalts with stronger lithospheric,as well as more or less primitive asthenospheric,signatures.A counterintuitive observation of Precambrian breakup LIPs outcropping as smaller fragments that are more peripherally located along craton margins,compared to assembly LIPs as well as the Phanerozoic Karoo breakup LIP,is explained by different preservation potentials during subsequent supercontinental ***,further accentuating radical differences between(1)breakup LIPs,preferentially intruding along what evolves to become volcanic rifted margins that are more susceptible to deformation within subsequent orogens,and(2)assembly LIPs,typically emplaced along backarc rifts within more protected cratonic interiors.A conditioned duality is proposed,where assembly LIPs are primarily sustained by thermal blanketing(as well as local arc hydration and rifting)below assembling supercontinents and breakup LIPs more typically form above impinging mantle *** a duality is further related to an overall dynamic Earth model whereby predominantly supercontinent-orientated ocean lithospheric subduction establishes/revitalizes large low shear velocity provinces(LLSVPs)during assembly LIP-activity,and heating of such LLSVPs by the Earth’s core subsequ

关键词： Large igneous provinces Extrovert plate tectonics LLSVP Mantle dynamics Geochemical discrimination

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RESULTS FROM IRRADIATION EMbRITTLEMENT MONITORING PROGRAMMES OF RPV’S OPERATED IN THE SLOVAK REPUbLIC NPP’S

RESULTS FROM IRRADIATION EMBRITTLEMENT MONITORING PROGRAMMES...

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第十八届国际反应堆结构力学大会

作者： Peter be■o L’udovít Kupa martin b.ezina VUJE Inc TrnavaSlovak Republic VUJE Inc TrnavaSlovak Republic VUJE Inc TrnavaSlovak Republic

＜正＞ 1 INTRODUCTION The actual status and main results from the irradiation embrittlement monitoring programmes application on the RPV’s WWER-440 in the Slovak Republic are presented in the paper. 2 SURVEILLANCE PROGRAMMES IN THE SLOVAK NPP’S Five types of surveillance programmes were （are） realized in Slovak NPP’s: in Jaslovske bohunice V-2 NPP （units 3 and 4）, was finished the original "Standard Surveillance Specimen Program" （SSSP）,

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Molecular rotor based on an oxidized resorcinarene

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Organic Chemistry Frontiers 2022年第1期9卷 39-50页

作者： Daniel T.Payne Jan Labuta Zdeněk Futera Václav b.ezina Lenka Hanyková Mandeep K.Chahal Jonathan P.Hill International Center for Materials Nanoarchitectonics National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan bInternational Center for Young Scientists National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan Institute of Physics Faculty of ScienceUniversity of South BohemiaBranišovská1760ČeskéBudějovice 37005Czech Republic Faculty of Mathematics and Physics Charles UniversityV Holešovičkách 218000 Prague 8Czech Republic

Molecular rotors are an important class of dynamic molecules which have been studied not only for their possible uses as components of molecular machines but also because of potential applications as probes of local viscosity in biological media,especially self-assembled *** the former,factors affecting rotational motility are critical while for the latter the rotor activity must be complexed with an output signal(often fluorescence)for reporting of local *** single stator-double rotor activity of an oxidized resorcinarene(fuchsonarene)macrocycle containing unsaturated hemiquinonoid groups at its meso positions was *** contain two hemiquinonoid substituents at diagonally-opposed meso-positions with two electron rich phenol groups at the remaining meso-positions between the hemiquinonoid *** meso-substituents are in proximity at one side of the resorcinarene macrocycle(so-called rccc-type isomer)with rotational activity of the phenol *** rates of the phenol moieties can be controlled by varying temperature,solvent polarity and acidity of the medium of study with rotation being thermally activated in neutral and acidic media and tunable in the range from 2 s^(−1) to 20000 s^(−1).Experimental and computational data indicate that rotation of the mobile phenol meso-substituents is remotely affected by interactions with acidic solvents at the carbonyl CvO groups of macrocyclic acetyloxy groups,which occurs with the emergence of a lower energy electronic absorption band whose intensity is correlated with both the acidity of the medium and the rotation rate of the phenol ***-dependent DFT calculations suggest that the low energy band is due to a molecular conformational adjustment affecting electronic conjugation caused by strong interaction of macrocyclic acetyloxy carbonyl groups with the acid *** work presents a molecular mechanical model for estimating solution acidity a

关键词： substituent rotation oxidized

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Prediction of the Resonance Characteristics of Combustion Chambers on the basis of Large-Eddy Simulation

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Journal of Thermal Science 2005年第2期14卷 156-161页

作者： Franco MAGAGNATO balázs PRITZ Horst bCHNER martin GAbI Department of Fluid Machinery University of Karlsruhe GermanyDepartment of Fluid Machinery University of KarlsruheGermanyEngler-Bunte-Institute/Division for Combustion Technology University of KarlsruheGermanyDepartment of Fluid Machinery University of KarlsruheGermany

In the last few years intensive experimental investigations were performed at the University of Karlsruhe to develop an analytical model for the Helmholtz resonator-type combustion system. In the present work the resonance characteristics of a Helmholtz resonator-type combustion chamber were investigated using large-eddy simulations (LES), to understand better the flow effects in the chamber and to localize the dissipation. In this paper the results of the LES are presented, which show good agreement with the experiments. The comparison of the LES study with the experiments sheds light on the significant role of the wall roughness in the exhaust gas pipe.

关键词： compressible large-eddy simulation combustion instabilities oscillating flow damping ratio.

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Fat deposition and partitioning for meat production in cattle and sheep

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Animal Nutrition 2024年第2期17卷 376-386页

作者： Shimin Liu Yanyan Yang Hailing Luo Wenjie Pang Graeme b.martin The UWA Institute of Agriculture The University of Western Australia Institute of Animal Husbandry of Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences College of Animal Science and Technology of China Agricultural University Resonance Health Burswood

In markets for beef and sheep meat, an appropriate level of intramuscular fat(IMF) is highly desirable for meat-eating quality, but strategies to improve it usually lead to an undesirable excess in carcase fat,presenting a major challenge to livestock producers. To solve this problem, we need to understand the partitioning of fat among the major fat depots: IMF, subcutaneous fat(SCF) and visceral fat(VF). In most genotypes of cattle and sheep, the rate of accretion is lower for IMF than for SCF and VF, so genetic selection for a high level of IMF, or the use of an increased dietary energy supply to promote IMF deposition, will increase overall fatness and feed costs. On the other hand, feeding postnatal calves with excessive concentrates promotes IMF deposition, so a nutritional strategy is feasible. With genetic strategies, several problems arise: 1) positive genetic correlations between IMF, SCF and VF differ among genotypes in both cattle and sheep; 2) genotypes appear to have specific, characteristic rates of accretion of IMF during periods of growth and fattening; 3) most breeds of cattle and sheep naturally produce meat with relatively low levels of IMF, but IMF does vary substantially among individuals and breeds so progress is possible through accurate measurement of IMF. Therefore, an essential prerequisite for selection will be knowledge of the genetic correlations and fat accretion rates for each genotype. Currently,selection for IMF is based on existing technology that directly measures IMF in the progeny or siblings, or estimates IMF in live animals. New technology is needed to permit the simultaneous measurement of SCF and IMF in the field, thus opening up the possibility of accurate selection, particularly for fat partitioning in live animals. Specifically, there would be great value in detecting individuals with an IMF advantage at an early age so the generation interval could be shortened and genetic gain accelerated. Genetic gain would also be grea

关键词： Fat depot Fat partition Intramuscular fat Feed efficiency bovine Ovine

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Acid-treated Fe-doped TiO2 as a high performance photocatalyst used for degradation of phenol under visible light irradiation

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Journal of Environmental Sciences 2019年第9期31卷 183-194页

作者： Vahid Moradi Faysal Ahmed martin b.G. Jun Arthur blackburn Rodney A. Herring Mechanical Engineering Department University of Victoria Victoria British Columbia V8W 2Y2 Canada Center for Advanced Materials and Related Technology University of Victoria Victoria British Columbia V8W 2Y2 Canada School of Mechanical Engineering Purdue University West Lafayette IN 47907-2088 USA

The photocatalytic activity of Fe-doped TiO2 nanoparticles is significantly increased by an acid-treatment process. The photocatalyst nanoparticles were prepared using sol–gel method with 0.5 mol% ratio of Fe:Ti in acidic pH of 3. The nanoparticles were structurally characterized by means of X-ray diffraction(XRD), high-resolution transmission electron microscope(HRTEM), energy-dispersive X-ray spectroscopy(EDX), X-ray photoelectron spectroscopy(XPS) and diffuse reflectance spectroscopy(DRS). It was observed that the photocatalytic activity suffered from an iron oxide contaminating layer deposited on the surface of the nanoparticles. This contamination layer was removed using an HCl acidtreatment process. The photocatalytic activity using 500 mg/L of Fe0.5-TiO2 in a 10 mg/L of phenol solution increased significantly from 33% to 57%(about 73% increase in the performance), within 90 min of reaction time under visible light irradiation. This significant improvement was achieved by removing the iron oxide contamination layer from the surface of the nanoparticles and adjusting p H to mild acidic and basic pHs.

关键词： Phenol degradation Visible light Photocatalyst Kinetics Iron doping

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Space-to-space Radio Interferometry System from Medium Earth Orbits

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空间科学学报 2019年第4期39卷 544-562页

作者： martin-NEIRA M KUDRIASHOV V bARAT I DUESMANN b DAGANZO E European Space Research and Technology Centre European Space Agency

This paper presents a new concept to perform space-to-space Very Long baseline Interferometry which enables the imaging of cosmic sources at high-resolution and high-sensitivity with small *** individual apertures are embarked on separate identical satellites staggered in height into Polar or Equatorial Circular Medium Earth Orbits(PECMEO orbits).These orbits are stable and allow GNSS-based on-the-fly centimeter-level relative *** operation is possible by exchanging local oscillator components and measured signals through Inter-Satellite Links(ISL).On-board cross correlation is performed at each satellite over a delay window compatible with the accuracy of the on-the-fly relative positioning and the result sent to the *** reconstruction is completed on the ground thanks to sub-millimeter baseline retrieval from accurate GNSS orbits,ISL ranging and spacecraft attitude *** application of this concept to image the Super Massive black Hole Sgr A*is hinted.

关键词： Space-to-space interferometry Event horizon Space radio-astronomy

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Plant Genome Editing Database (PGED): A Call for Submission of Information about Genome-Edited Plant Mutants

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Molecular Plant 2019年第2期12卷 127-129页

作者： Yi Zheng Ning Zhang Gregory b. martin Zhangjun Fei boyce Thompson Institute for Plant Research Ithaca NY 14853 USA Plant Pathology and Plant-Microbe biology Section School of Integrative 2Plant Pathology and Plant-Microbe Biology Section School of Integrative Plant Science Cornell University Ithaca NY 14853 USA USDA-ARS Robert W. Holley Center for Agriculture and Health Ithaca NY 14853 USA These authors contributed equally to this article

Recent advances in genome editing technologies, particularly CRISPR/Cas, enable the alteration of DNA sequences to produce deletions, insertions, and substitutions in genes (Jaganathan et al., 2018), as well as large ... 详细信息

关键词： Plant Genome Editing Database (PGED) Genome-Edited Plant Mutants

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Measures of Relative and Absolute Convergence and Pro-poor Growth with an Illustration based on China(2010–2018)

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China & World Economy 2024年第2期32卷 1-41页

作者： Elena bárcena-martin Jacques Silber Yuan Zhang Facultad de Ciencias Económicas y Empresariales Universidad de MálagaSpain Department of Economics Bar-Ilan UniversityIsrael China Center for Economic Studies Fudan UniversityChina

Income mobility is a key issue for understanding the process of economic growth and distributional *** economists have used the concept of“pro-poor growth”to examine,with individual-level panel data,whether the poor benefit more than the rich from economic growth by tracking the extent of income mobility among different population *** is also literature in macroeconomics on the measurement of *** paper introduces population-weighted relative and absolute indices of mobility,convergence,and pro-poor growth;it also distinguishes between anonymous and nonanonymous approaches to these *** empirical analysis is based on Chinese panel data for the period 2010–*** both absolute and relative terms,income growth in China was greater for individuals with an initially lower income but only for lower income deciles in relative *** was also an overall increase in individual welfare from anonymous and nonanonymous perspectives,which was higher among younger *** welfare of the poor did not increase more than that of the *** results shed light on the evolution of income distribution in China during the past decade's rapid economic growth.

关键词： anonymous and nonanonymous approach convergence exchange and structural mobility pro-poor growth

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Let the light be a guide:Chromophore communication in metalorganic frameworks

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Nano Research 2021年第2期14卷 338-354页

作者： Corey R.martin Preecha Kittikhunnatham Gabrielle A.Leith Anna A.berseneva Kyoung Chul Park Andrew b.Greytak Natalia b.Shustova Department of Chemistry and biochemistry University of South CarolinaColumbia631 Sumter SteetSouth Carolina 29208USA

The photonic characteristics of chromophore-containing metal-organic frameworks(MOFs)have led to extensive photophysical studies in an effort to capitalize on the potency of precisely controlled chromophore *** examples have laid the foundation that demonstrates how photophysical properties of chromophores can be manipulated by tuning their communications(interactions)through integration within a MOF *** main focus of this review is on harnessing the versatile MOF platform to accentuate the photophysical properties of integrated *** particular,this review will highlight chromophore dynamics that enhance,alter,or tune the photoluminescence response of single-and multi-chromophore-containing scaffolds,as well as alignment-guided anisotropic *** upon this groundwork,utilization of a hybrid crystalline motif can induce preferential orientation of chromophores resulting in enhanced communication and tailored behavior compared to randomly oriented emissive ***,frameworks that produce upconverted emission via sensitized triplet-triplet annihilation(sTTA),excited-state absorption(ESA),energy transfer upconversion(ETU),multi-photon absorption(MPA),or second-harmonic generation(SHG)can invoke dynamic control of material properties using photochromic linkers and will be discussed herein with a focus on the effects of chromophore *** within a framework is a vehicle tofuse chromophores into solid-state platforms,opening an avenue for chromophore utilization in applications such as portable electronics that require solids or thin *** those reasons,the design of chromophore-containing MOFs with desirable properties that rely on the alignment and communication of hundreds of chromophores within a single platform is a pressing demand for the development of futuristic technologies.

关键词： chrom ophores photophysics photon upconversion photochromism anisotropic photolum inescence optoelectronics

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