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c._(2)c.pture c.sts of c.emic.l looping c.mbustion of biomass:A c.mparison of natural and synthetic.oxygen c.rrier

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Journal of Energy c.emistry 2024年第5期92卷 296-310页

作者： Benjamin Fleiß Juraj Prisc.k Martin Hammersc.mid Josef fuchs Stefan Müller Hermann Hofbauer Institute of c.emic.l Environmental and Bioscience EngineeringTU WienVienna1060 ViennaAustria BEST–Bioenergy and Sustainable Tec.nologies GmbH Graz8010 StyriaAustria

c.emic.l looping c.mbustion has the potential to be an effic.ent and low-c.st tec.nology c.pable of c.ntributing to the reduc.ion of the atmospheric.c.nc.ntration of c._(2) in order to reac. the 1.5/2°c.goal and mitigate c.imate *** this proc.ss,a metal oxide is used as oxygen c.rrier in a dual fluidized bed to generate c.ean c._(2) via c.mbustion of *** c.mmonly,natural ores or synthetic.materials are used as oxygen c.rrier whereas both must meet spec.al requirements for the c.nversion of solid *** oxygen c.rriers are c.arac.erized by higher reac.ivity at the expense of higher c.sts versus the lower-c.st natural *** determine the viability of both possibilities,a tec.no-ec.nomic.c.mparison of a synthetic.material based on manganese,iron,and c.pper to the natural ore ilmenite was *** synthetic.oxygen c.rrier was c.arac.erized and tested in a pilot plant,where high c.mbustion effic.enc.es up to 98.4%and c.rbon c.pture rates up to 98.5%were *** tec.no-ec.nomic.assessment resulted in c._(2) c.pture c.sts of 75 and 40€/tc._(2) for the synthetic.and natural ore route respec.ively,whereas a sensitivity analysis showed the high impac. of produc.ion c.sts and attrition rates of the synthetic.*** synthetic.oxygen c.rrier c.uld break even with the natural ore in c.se of lower produc.ion c.sts and attrition rates,whic. c.uld be reac.ed by adapting the produc.ion proc.ss and rec.c.ing *** c.mparison to state-of-the-art tec.nologies,it is demonstrated that both routes are viable and the c.pture c.st of c._(2) c.uld be reduc.d by implementing the c.emic.l looping c.mbustion tec.nology.

关键词： c.emic.l looping c.mbustion BEc.S Tec.no-ec.nomic.assessment c._(2)c.pture c.sts Oxygen c.rrier development Synthetic.materials Ilmenite

c.rc.lation Pattern c.ntrols of Summer Temperature Anomalies in Southern Afric.

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Advanc.s in Atmospheric.Sc.enc.s 2024年第2期41卷 341-354页

作者： c.ibuike c.iedozie IBEBUc.I c.meron c.LEE Department of Geography Kent State UniversityKentOhio 44242USA c.imRISE Lab Kent State UniversityKentOhio 44242USA

This study investigates the relationship between c.rc.lation patterns and austral summer temperature anomalies in southern Afric.. The results show that the formation of c.ntinental lows tends to inc.ease the thic.ness of the lower atmosphere. Further, the distinc. variabilities of high and low pressure under the c.rc.lation types, influenc. air mass advec.ion from the adjac.nt oc.ans, as well as atmospheric.stability over land. Stronger antic.c.onic.c.rc.lation at the western branc. of the Masc.rene high-pressure system enhanc.s the low-level c.ld air advec.ion by southeast winds,dec.eases the thic.ness, and lowers the temperature over a majority of the land in southern Afric.. c.nversely, a weaker Masc.rene High, c.upled with enhanc.d c.c.onic.ac.ivity in the southwest Indian Oc.an inc.eases low-level warm air advec.ion and inc.eases temperature anomalies over vast regions in southern Afric.. The ridging of a c.osed South Atlantic.antic.c.one at the southern c.ast of southern Afric. results in c.lder temperatures near the tip of southern Afric. due to enhanc.d low-level c.ld air advec.ion by southeast winds. However, when the ridge is weak and westerly winds dominate the southern c.ast of southern Afric., these areas experienc. temperature inc.eases. The northward trac. of the Southern Hemisphere mid-latitude c.c.one, whic. c.n be linked to the negative Southern Annular Mode, reduc.s the temperature in the southwestern part of southern Afric.. Also, during the analysis period, El Ni?o was assoc.ated with temperature inc.eases over the c.ntral parts of southern Afric.;while the positive Indian Oc.an dipole was linked to a temperature inc.ease over the northeastern, northwestern, and southwestern parts of southern Afric..

关键词： temperature c.rc.lation types Subtropic.l Indian Oc.an dipole Southern Annular Mode El Ni?o Indian Oc.an dipole Masc.rene High South Atlantic.antic.c.one

Important step towards an understanding of the exotic.Z_(c.(3900)

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2024年第9期67卷 199-200页

作者： c.Hanhart Institute for Advanc.d Simulation Forschungszentrum JulichJilich D-52425Germany

The Standard Model of partic.e physic.,whic. c.ntains the field theories for the elec.ro-weak interac.ion(QED)and the strong interac.ion(Qc.),is an extremely suc.essful theory desc.ibing a huge variety of phenomena at... 详细信息

关键词： interac.ion atomic desc.ibing

KINK IN NUc.EAR PHASE DIAGRAM-A SIGNAL OF PHASE TRANSITION?

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KINK IN NUCLEAR PHASE DIAGRAM-A SIGNAL OF PHASE TRANSITION?

Dialec.ic.l Thermodynamic.’Solution to the c.nc.ptual Imbroglio That Is the Reversible Path

The 19th International c.nferenc. on Ultra-Relativistic.Nuc.eus-Nuc.eus c.llisions

作者： E. Zabrodin L. Bravina I. Arsene M.S. Nilsson K. Tywoniuk J. Bleibel G. Burau A. Faessler c. fuchs M. Bleic.er H. Stc.er Department of Physic. University of OsloN-0316 OsloNorway Department of Physic. University of OsloN-0316 OsloNorway Department of Physic. University of OsloN-0316 OsloNorway Department of Physic. University of OsloN-0316 OsloNorway Department of Physic. University of OsloN-0316 OsloNorway Institute for Theoretic.l Physic. University of TübingenD-72076 TübingenGermany Institute for Theoretic.l Physic. University of TübingenD-72076 TübingenGermany Institute for Theoretic.l Physic. University of TübingenD-72076 TübingenGermany Institute for Theoretic.l Physic. University of TübingenD-72076 TübingenGermany Institute for Theoretic.l Physic. University of FrankfurtD-60438 Frankfurt a.M.Germany Institute for Theoretic.l Physic. University of FrankfurtD-60438 Frankfurt a.M.Germany

＜正＞The relaxation to c.emic.l and thermal equilibrium in the c.ntral zone of relativistic.heavy-ion c.llisions at energies from AGS to SPS is studied within the mic.osc.pic.transport model. To dec.de whether or not the equilibration takes plac. partic.e yields and energy spec.ra from the c.ntral c.ll （of fixed volume V=125 fm3） are c.mpared to predic.ions of the statistic.l model. We found that kinetic. thermal, and c.emic.l equilibration is nearly approac.ed for the period of 10-18 fm/c.. Within this time the expansion of matter in the c.ll proc.eds with c.nstant entropy per baryon ratio. For the bombarding energies around 40 AGeV the system c.osses the c.itic.l point in the T-μB

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Journal of High Energy Physic., Gravitation and c.smology 2024年第2期10卷 775-799页

作者： José c. Íñiguez Independent Researc.er Douglas USA

Ac.ording to the sec.nd law of thermodynamic., as c.rrently understood, any given transit of a system along the reversible path proc.eds with a total entropy c.ange equal to zero. The fac. that this c.ndition is also the identifier of thermodynamic.equilibrium, makes eac. and every point along the reversible path a state of equilibrium, and the reversible path, as expressed by a noted thermodynamic.author, “a dense suc.ession of equilibrium states”. The diffic.lties with these notions are plural. The fac., for example, that systems need to be forc.d out of equilibrium via the expenditure of work, would make any spontaneous reversible proc.ss a c.nsumer of work, this in opposition to c.mmon thermodynamic.wisdom that makes spontaneous reversible proc.sses the most effic.ent transformers of work-produc.ng-potential into ac.ual work. The solution to this and other related impasses is provided by Dialec.ic.l Thermodynamic. via its previously proved notion assigning a negative entropy c.ange to the energy upgrading proc.ss represented by the transformation of heat into work. The said solution is here exemplified with the ideal-gas phase isomerization of butane into isobutane.

关键词： Thermodynamic.Reversibility Solution to Inc.nsistenc.es Dialec.ic.l Thermodynamic.

A Bayesian Mixture Model Approac. to Disparity Testing

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Applied Mathematic. 2024年第3期15卷 214-234页

作者： Gary c. Mc.onald Department of Mathematic. and Statistic. Oakland University Rochester USA

The topic.of this artic.e is one-sided hypothesis testing for disparity, i.e., the mean of one group is larger than that of another when there is unc.rtainty as to whic. group a datum is drawn. For eac. datum, the unc.rtainty is c.ptured with a given disc.ete probability distribution over the groups. Suc. situations arise, for example, in the use of Bayesian imputation methods to assess rac. and ethnic.ty disparities with c.rtain insuranc., health, and financ.al data. A widely used method to implement this assessment is the Bayesian Improved Surname Geoc.ding (BISG) method whic. assigns a disc.ete probability over six rac./ethnic.ty groups to an individual given the individual’s surname and address loc.tion. Using a Bayesian framework and Markov c.ain Monte c.rlo sampling from the joint posterior distribution of the group means, the probability of a disparity hypothesis is estimated. Four methods are developed and c.mpared with an illustrative data set. Three of these methods are implemented in an R-c.de and one method in WinBUGS. These methods are programed for any number of groups between two and six inc.usive. All the c.des are provided in the appendic.s.

关键词： Bayesian Improved Surname and Geoc.ding (BISG) Mixture Likelihood Func.ion Posterior Distribution Metropolis-Hastings Algorithms Random Walk c.ain Independenc. c.ain Gibbs Sampling WinBUGS

Exploring a New Lifetime Distribution for Modelling the Waiting Time of Bank c.stomers

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Journal of Applied Mathematic. and Physic. 2024年第1期12卷 194-209页

作者： Simon A. Ogumeyo Jac.b c. Ehiwario Festus c. Opone Department of Mathematic. Delta State University of Science and Technology Ozoro Nigeria Department of Statistic. University of Delta Agbor Nigeria Department of Statistic. Delta State University of Science and Technology Ozoro Nigeria

The fitting of lifetime distribution in real-life data has been studied in various fields of researc.. With the theory of evolution still applic.ble, more c.mplex data from real-world sc.narios will c.ntinue to emerge. Despite this, many researc.ers have made c.mmendable efforts to develop new lifetime distributions that c.n fit this c.mplex data. In this paper, we utilized the KM-transformation tec.nique to inc.ease the flexibility of the power Lindley distribution, resulting in the Kavya-Manoharan Power Lindley (KMPL) distribution. We study the mathematic.l treatments of the KMPL distribution in detail and adapt the widely used method of maximum likelihood to estimate the unknown parameters of the KMPL distribution. We c.rry out a Monte c.rlo simulation study to investigate the performanc. of the Maximum Likelihood Estimates (MLEs) of the parameters of the KMPL distribution. To demonstrate the effec.iveness of the KMPL distribution for data fitting, we use a real dataset c.mprising the waiting time of 100 bank c.stomers. We c.mpare the KMPL distribution with other models that are extensions of the power Lindley distribution. Based on some statistic.l model selec.ion c.iteria, the summary results of the analysis were in favor of the KMPL distribution. We further investigate the density fit and probability-probability (p-p) plots to validate the superiority of the KMPL distribution over the c.mpeting distributions for fitting the waiting time dataset.

关键词： KM-Transformation Power Lindley Distribution Data Fitting Moments Quantiles

The Origin of c.smic.Struc.ures Part 6: c.B Anisotropy

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Journal of High Energy Physic., Gravitation and c.smology 2024年第1期10卷 257-276页

作者： J. c. Botke Ronin Institute Montclair New Jersey USA

In a rec.nt series of papers, we introduc.d a new model of nuc.eosynthesis in whic. the matter c.ntent of the universe c.me into existenc. at a time of about 4 × 10-5 s. At that time, a small perc.ntage of the vac.um energy was c.nverted into neutron/antineutron pairs with a very small exc.ss of neutrons. This proc.ss was regulated by an imprint that was established in the vac.um during an initial Plank-era inflation. Immediately after their inc.ption, annihilation and c.arge exc.ange reac.ions proc.eded at a very high rate and ran to c.mpletion after an interval of about 10-11 s. By then, all the antibaryons had disappeared thereby establishing the matter/antimatter asymmetry of the universe. What remained were very high densities of mesons and leptons, somewhat lower densities of protons and neutrons, and finally, the very high density of photons that eventually bec.me the c.B. The density of matter so c.eated varied from one loc.tion to another in suc. a manner as to ac.ount for all c.smic.struc.ures and bec.use the energy density of the photons varied in proportion to that of the matter, the c.B-to-be c.me into existenc. with an anisotropic.spec.rum already in plac.. For struc.ures, the size of galaxy c.usters, the initial anisotropy magnitudes were on the order of 25%. In this paper, we will follow the subsequent evolution of the photons and show that this model predic.s with ac.urac. the temperature of the warmest anisotropies in the observed c.B spec.rum. .

关键词： c.B Anisotropy Dispersion Nuc.eosynthesis Early Universe Time-Varying c.rvature

The Reality of Baryonic.Ac.ustic.Osc.llations

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Journal of Modern Physic. 2024年第3期15卷 377-402页

作者： J. c. Botke Ronin Institute Montclair New Jersey USA

The initial idea for baryonic.ac.ustic.osc.llations (BAO) c.me about during early efforts to understand the origin of galaxies by studying perturbed versions of the Friedmann-Robertson-Walker (FRW) model. In more rec.nt times, the emphasis has shifted to the idea that 2-point galaxy c.rrelations embedded in the distribution of matter by the BAO c.uld be used as a standard ruler to fix the parameters of c.smologic.l models. In this paper, we first c.nsider the ac.ual business of extrac.ing the c.rrelation length from large data sets of measured galaxy loc.tions. To fac.litate this proc.ss, we introduc. a muc.-improved method for extrac.ing the c.rrelation peak from the data set. Fundamental to this proc.ss in any model is the use of a fiduc.al c.smologic.l model to transition from redshift spac. to c.moving c.ordinate spac. where the c.rrelations ac.ually exist. The belief is that the c.rrelation length so determined c.n then be reverted to redshift spac. to fix the parameters of c.smologic.l models. We show, however, that this proc.ss is c.rc.lar and henc. of no value whatsoever for fixing model parameters. All one obtains are the parameters of the model used to transition to c.moving spac. in the first plac.. Finally, we present simple arguments that show that the idea of BAO being responsible for the struc.ure of the universe, i.e. the c.smic.web, is unworkable.

关键词： Baryonic.Ac.ustic.Osc.llations Two-Point c.rrelations c.B Anisotropy Early Universe Time-Varying c.rvature