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Cosmological Gravitational Redsh.f., Spectral Sh.f. and Time in th. Taub-NUT Universe

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Journal of.Modern Ph.sics 2024年第9期15卷 1448-1459页

作者： Ch.rles h. McGruder III Department of.Ph.sics and Astronomy Western Kentucky University Bowling Green Kentucky USA

We demonstrate th.t: 1) Th. Taub-NUT universe is f.nite. 2) Th. Taub-NUT universe is much.larger th.n th. maximum observable distance according to th. standard th.ory of.cosmology. 3) At large distances th. spectral s... 详细信息

关键词： Cosmology General Relativity

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Th. Unif.ed f.eld

Journal of.Modern Ph.sics 2024年第7期15卷 1010-1035页

作者： Joseph.h. (Cass) f.rrington Managing Editor Journal of Cosmology California USA

Th.s is a Unif.ed f.eld description based on th. h.lograph.c Time Dilation Cosmology, TDC, model, wh.ch.is an eternal continuum evolving f.rward in th. f.rward direction of.time, at th. speed of.ligh., c, at an invariant 1 s/s rate of.time. Th.s is th. f.ndamental Direction of.Evolution, f.E. Th.re is also an evolution down time dilation gradients, th. Gravitational Direction of.Evolution, GDE. Th.se evolutions are gravity, wh.ch.is th. evolutionary f.rce in time. Gravitational velocities are compensation f.r th. dif.erence in th. rate of.time, dRt, in a dilation f.eld, and th. dRtis equal to th. compensatory velocity’s percentage of.c, and is a measure of.th. f.rce in time inducing th. velocity. In applied f.rce induced velocities, th. dRt is a measure of.th. resistance in time to th. induced velocity, wh.ch.migh. be called “anti-gravity” or “negative gravity”. Th. two ef.ects keep th. continuum unif.rmly evolving f.rward at c. It is demonstrated th.t gravity is already a part of.th. electromagnetic f.eld equations in way of.th. dRt element contained in th. TDC velocity f.rmula. Einstein’s energy f.rmula is def.ned as a velocity f.rmula and a modif.ed version is used f.r ch.rged elementary particle solutions. A time dilation-based derivation of.th. Lorentz f.rce ties gravity directly to th. electromagnetic f.eld proving th. unif.ed f.eld of.gravity and th. EMf. It is noted h.w we could possibly create gravity drives. Th.s is f.llowed by a discussion of.black h.les, proving supermassive objects, like massive black h.le singularities, are impossible, and th.t black h.les are massless Magnetosph.ric Eternally Collapsing Objects (MECOs) th.t are vortices in spacetime. .

关键词： Unif.ed f.eld Gravity Anti-Gravity Astroph.sics Einstein General Relativity Special Relativity Galactic Rotation Velocities Time Dilation Spacetime Space Time Spacetime Continuum Quantum Continuum MECO Black h.le Event h.rizon Timelike Spacelike Ligh.like

Extinction of.Ligh. in th. Galactic h.lo: f.rst Observational Evidence of.th. Interaction of.Ligh. and Dark Matter

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Journal of.Modern Ph.sics 2024年第8期15卷 1144-1198页

作者： Ch.rles h. McGruder III Department of.Ph.sics and Astronomy Western Kentucky University Bowling Green USA

We study th. distribution of.quasars on th. celestial sph.re according to ground-based SDSS and space-based WISE and Gaia observations. All distributions as a f.nction of.galactic latitude, b, exh.bit a decrease in quasar f.equency well outside th. dust in and near th. galactic plane. We prove th.t th. observed decrease in quasar f.equency at h.gh.galactic latitudes is not accompanied by reddening, meaning th.t it can not be caused by dust. Th. scattering of.ligh. by th. circumgalactic gas is negligible because th. Th.mson scattering cross section is very small. We conclude th. observed scattering of.ligh. must be caused by dark matter in th. galactic h.lo. We determine th. mass and ch.rge of.dark matter particles. If.th. dark matter particle is a f.rmion its mass, mDMand ch.rge eDM=δe, wh.re e is th. elementary ch.rge are: mDM=3.2×10−2eV and δ=3.856×10−5. If.h.wever th. dark matter particle is spinless th.n: mDM=0.511eV and δ=2.132×10−4. Th.se values f.r th. ch.rge of.a dark matter particle are orders of.magnitude h.gh.r th.n th. upper limit of.th. neutrino ch.rge according to laboratory experiments. Consequently, dark matter particles are not ch.rged neutrinos. Since dark matter particles are ch.rged, th.y must emit and absorb electromagnetic radiation. h.wever, PDM~δ2, or: PDM~1.487×10−9Pe, wh.re Peis th. power output of.a single electron.

关键词： Milky Way Dark Matter h.lo (1049)

Time Dilation Cosmology 2

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Journal of.Modern Ph.sics 2024年第4期15卷 448-461页

作者： Joseph.h. (Cass) f.rrington Managing Editor Journal of Cosmology California USA

Th.s paper is a f.rth.r elaboration of.th. auth.r’s Time Dilation Cosmology (TDC) h.lograph.c model th.t ties gravitation and celestial mech.nics and kinematics directly to time dilation, resolving all th. major conundrums in astroph.sics, and ties astroph.sics directly to quantum ph.sics. It begins with.a brief.summary of.th. TDC model and contains th. new derivation f.r th. time dilation version of.th. f.rmula f.r summing relativistic velocities, Einstein’s gravitational constant and th. time dilation versions f.r th. Lorentz f.ctor and th. Euclidean norm of.th. 3d velocity vector, th. two of.wh.ch.can th.n be used in th. f.ur-velocity f.rmula. It is demonstrated h.w orbital curvature is manif.sted as th. resultant of.two time dilation-manif.sted velocities. It also explains wh. an interf.rometer cannot distinguish.f.ee f.ll f.om zero gravity and f.rth.r elaborates on th. auth.r’s previous explanations of.h.w spiral galaxies are f.rmed, and contains math.matical proof.th.t Black h.les are actually Magnetosph.ric Eternally Collapsing Objects (MECOs) th.t are massless spacetime vortices.

关键词： Gravitation Time Time Dilation Celestial Mech.nics ISM: Kinematics and Dynamics Cosmology: Th.ory Galaxies: Evolution

Df. investigation of.h.lf.metallic f.rromagnetic rare earth.based spinels Mgh._(2)Z_(4)(Z=S,Se)

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Journal of.Rare Earth. 2024年第1期42卷 121-128,I0005页

作者： Maiza Zanib Mumtaz Manzoor N.A.Noor M.Waqas Iqbal Mazia Asgh.r h.h.h.gazy A.Laref Department of.Ph.sics Riphah International UniversityLahore CampusPakistan Research.Centre f.r Advanced Materials Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of.Ph.sics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of.Ph.sics and Astronomy College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

h.lf.metallic f.rromagnetism,mech.nical as well as th.rmoelectric properties f.r rare earth.based spinels Mgh._(2)Z_(4)(Z=S,Se)were investigated using density f.nctional th.ory(Df.).Structural optimization was done with.Perdew-Burke-Eh.enzorf.PBE)sol-generalized gradient approximation(GGA)to calculate th. lattice constant of.both.spinels comparable to experimental *** addition,Born stability criteria and negative f.rmation energy sh.w th.t our studied spinels are also structurally and dynamically stable in th. cubic *** f.rromagnetic(f.)state stability,we also calculated th. energy dif.erences among f.,antif.rromagnetic(Af.),and non-magnetic(NM)***,Curie temperatures of.f.rromagnetic ph.ses were also *** used Trans-Blah. improved BeckeJoh.son(TB-mBJ)potential f.nctional f.r electronics as well as magnetic ch.racteristics,wh.ch.lead to th. consistent explanation of.h.lf.metallic f.rromagnetism,representing th. wh.le band-occupancy in material with.exact detail of.density of.states(DOS).Th. stable f. state was examined in spinels due to th. exch.nge splitting of.h. cation consisting of.p-d h.bridizations compatible with.th. result ach.eved f.r electronics band structure and ***,spin magnetic moment was explained in terms of.anion,cation,and sh.ring ch.rge on studied *** addition,th. calculated th.rmoelectric properties clearly sh.w th.t operation range of.th.se systems may be utilized by f.ture experimental works f.r identif.ing th. potential applications of.th.se systems.

关键词： h.-based spinels Df. simulations Mech.nical parameters Electronic properties h. f.rromagnetism f.gure of.merit

MgO-attach.d graph.ne nanosh.et(MgO@GNS)reinf.rced magnesium matrix nanocomposite with.superior mech.nical,corrosion and biological perf.rmance

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International Journal of.Minerals,Metallurgy and Materials 2024年第9期31卷 2062-2076页

作者： S.Abazari A.Sh.msipur h.R.Bakh.h.sh.-Rad M.S.Soh.ilirad f.Kh.rash.dizade S.S.Mirh.sseini Department of.Materials and Metallurgical Engineering Amirkabir University of TechnologyTehran ***Iran Iranian National Standards Organization of.h.rmozgan HormozganIran Advanced Materials Research.Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Department of.Materials and Metallurgical Engineering Iran University of Science and TechnologyTehranIran

Magnesium(Mg)alloys are gaining great consideration as body implant materials due to th.ir h.gh.biodegradability and ***,th.y suf.er f.om low corrosion resistance and antibacterial *** th.s research.semi-powder metallurgy f.llowed by h.t extrusion was utilized to produce th. magnesium oxide@graph.ne nanosh.ets/magnesium(MgO@GNS/Mg)composite to improve mech.nical,corrosion and cytocompatibility *** h.ve revealed th.t th. incorporation of.MgO@GNS nanoh.brids into Mg-based composite enh.nced microh.rdness and compressive *** vitro,osteoblast cell culture tests sh.w th.t using MgO@GNS nanoh.brid f.llers enh.nces osteoblast adh.sion and apatite *** presence of.MgO@GNS nanoparticles in th. composites decreased th. opening def.cts,micro-cracks and micro-pores of.th. composites th.s preventing th. penetration of.th. corrosive solution into th. *** demonstrated th.t th. MgO@GNS/Mg composite possesses excellent antibacterial properties because of.th. combination of.th. release of.MgO and ph.sical damage to bacterium membranes caused by th. sh.rp edges of.graph.ne nanosh.ets th.t can ef.ectively damage th. cell wall th.reby f.cilitating penetration into th. bacterial lipid ***,th. MgO@GNS/Mg composite with.h.gh.mech.nical strength.antibacterial activity and corrosion resistance is considered to be a promising material f.r load-bearing implant applications.

关键词： metal matrix composites MgO@GNS nanoh.brid strength.ning mech.nisms antibacterial activity biocompatibility

Cosmology with.ut th. Cosmological Principle and with.ut Violating th. Copernican Principle: Taub-NUT Universe

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Journal of.Modern Ph.sics 2024年第8期15卷 1069-1096页

作者： Ch.rles h. McGruder III Department of.Ph.sics and Astronomy Western Kentucky University Bowling Green Kentucky USA

We develop a th.ory of.cosmology, wh.ch.is not based on th. cosmological principle. We ach.eve th.s with.ut violating th. Copernican principle. It is well known th.t th. gravitational redsh.f. associated with.th. Sch.arzsch.ld solution applied to th. distant supernova does not lead to th. observed redsif.-distance relationsh.p. We sh.w, h.wever, th.t generalizations of.th. Sch.arzsch.ld metric, th. Taub-NUT metrics, do indeed lead to th. observed redsh.f.-distance relationsh.p and to th. observed time dilation. Th.se universes are not expanding rath.r th. observed cosmological redsh.f. is due to th. gravitational redsh.f. associated with.th.se solutions. Time dilation in th.se stationary universes h.s th. same dependency on redsh.f. th.t generally h.s been seen as proof.th.t space is expanding. Our th.ory resolves th. h.bble tension.

关键词： Cosmology General Relativity

SARS-CoV-2 variants are associated with.dif.erent clinical courses in ch.ldren with.MIS-C

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World Journal of.Pediatrics 2024年第2期20卷 143-152页

作者： Andres f.Moreno Rojas Emelia Bainto h.len h.rvey Adriana h.Tremoulet Jane C.Burns Kirsten B.Dummer Department of.Pediatrics Division of Pediatric CardiologyUniversity of California San Diegoand Rady Children’s Hospital3020 Children’s Way MC 5004San DiegoCA 92123USA Kawasaki Disease Research.Center La JollaCAUSA Department of.Pediatrics Division of Pediatric Critical CareUniversity of California San Diegoand Rady Children’s HospitalSan DiegoCAUSA Department of.Pediatrics University of California San Diegoand Rady Children’s HospitalSan DiegoCAUSA

Background Recent inf.ction with.SARS‑CoV-2 in ch.ldren h.s been associated with.multisystem inf.ammatory syndrome in ch.ldren(MIS-C).SARS‑CoV-2 h.s undergone dif.erent *** publications exist about specif.c variants and th.ir correlation with.th. severity of.*** Th.s was a single-center,retrospective study including all patients admitted with.MIS-C at Rady Ch.ldren’s h.spital-San Diego between May 2020 and March.*** epidemiologic data,including viral genomic inf.rmation,were obtained f.om public ***,clinical presentation,laboratory values,and outcomes were obtained f.om electronic medical *** Th. analysis included 104 pediatric *** MIS-C waves were *** variants in San Diego during th. f.rst wave included clades 20A to *** th. second wave,th.re were variants f.om clades 20A to C,20G,21C(Epsilon),20I(Alph.),and 20J(Gamma).Th. th.rd wave h.d Delta strains(clades 21A,21I,and 21J),and th. f.urth.h.d Omicron variants(clades 21K,21L,and 22C).MIS-C presented with.similar symptoms and laboratory f.ndings across all *** patients were admitted to th. pediatric intensive care unit(PICU)(74%)and required inotropic support(63%)during th. second *** of.th. patients required mech.nical circulatory support,and only two required invasive ventilatory *** was no *** Th. various strains of.SARS-CoV-2 triggered MIS-C with.dif.ering severities,with.th. second wave h.ving a more severe clinical *** th. dif.erences in disease severity across variants were due to ch.nges in th. virus or oth.r f.ctors remains unknown.

关键词： Complications COVID-19 MIS-C SARS-CoV-2 variants

Rational design of.AgGaS/ZnS/ZnS quantum dots with.a near-unity ph.toluminescence quantum yield via double sh.lling sch.me

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Journal of.Materials Science & Tech.ology 2024年第2期169卷 235-242页

作者： h.X.Lu h.Liu Z.Z.f. Y.Y.Ch.n h.Q.Dai Z.h. W.L.Zh.ng R.Q.Guo Institute f.r Electric Ligh. Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of.f.ture Ligh.ing Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu Research.Institute of.f.dan University YiwuZhejiang 322000China Zh.ngsh.n-f.dan Joint Innovation Center Zhongshan 528437China

In th.s study,a two-step meth.d was used to synth.size h.gh.y luminescent AgGaS/ZnS/ZnS quantum dots(QDs).In th. f.rst step,an inner ZnS sh.ll was f.rmed via a one-pot meth.d,wh.ch.resulted in a smaller lattice mismatch.between th. AgGaS core and th. outer ZnS sh.ll,th.reby f.cilitating th. f.rmation of.a th.ck outer *** th. two-step sh.lling process,th. synth.sized AgGaS/ZnS/ZnS QDs sh.wed an excellent ph.toluminescence quantum yield(PLQY)of.96.4%with.a peak wavelength.of.508 nm,repre-senting th. h.gh.st PLQY reported th.s f.r f.r AgGaS ***,th. ef.ect of.h.logen ions in Zn precursors on th. sh.lling process was *** was proposed th.t th. capacity of.h.logen ions to coordinate with.th. QDs inf.uenced th. balance between Zn cation dif.usion and ZnS sh.lling ***,th. ZnS sh.lling reaction was dominant wh.n ZnCl_(2)was employed,wh.le Zn cation dif.usion was th. dominant process under th. I^(−)-rich.*** work provides insigh.s into th. interf.cial restructuring during th. ZnS sh.lling and of.ers a clear map f.r th. tailored synth.sis of.core/sh.ll QDs.

关键词： AgGaS Quantum dots Ph.toluminescence Core/sh.ll Alloyed core/sh.ll interf.ce