检索结果-南通市图书馆

Progress in Natural Science:Materials International 2015年第6期25卷 631-641页

作者： Boris Dyatkin eugene mamontov Kevin M.Cook Yury Gogotsi Department of Materials Science & Engineering and A.J.Drexel Nanomaterials Institute Drexel University Spallation Neutron Source Oak Ridge National Laboratory Materials Engineering Division Naval Air Systems Command

This study analyzed the dynamics of ionic liquid electrolyte inside of defunctionalized,hydrogenated,and aminated pores of carbide-derived carbon supercapacitor *** approach tailors surface functionalities and tunes nanoporous structures to decouple the influence of pore wall composition on capacitance,ionic resistance,and long-term ***-elastic neutron scattering probes the self-diffusion properties and electrode-ion interactions of electrolyte molecules confined in functionalized ***-temperature ionic liquid interactions in confined pores are strongest when the hydrogen-containing groups are present on the *** property translates into higher capacitance and greater ion transport through pores during electrochemical *** hydrogenated pores,aminated pores do not favorably interact with ionic liquid ions and,subsequently,are outperformed by defunctionalized surfaces.

关键词： Supercapacitor Carbide-derived carbon Neutron scattering Energy storage Porous materials Surface chemistry

Experimental mapping of short-wavelength phonons in proteins

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The Innovation 2022年第1期3卷 97-103页

作者： Utsab R.Shrestha eugene mamontov Hugh M.O’Neill Qiu Zhang Alexander I.Kolesnikov Xiangqiang Chu UT/ORNL Center for Molecular Biophysics Biosciences DivisionOak Ridge National LaboratoryOak RidgeTN 37831USA Neutron Scattering Division Oak Ridge National LaboratoryOak RidgeTN 37831USA Department of Nuclear Science and Technology Graduate School of China Academy of Engineering PhysicsBeijing 100193China

Phonons are quasi-particles,observed as lattice vibrations in periodic materials,that often dampen in the presence of structural ***,phonon-like collective excitations exist in highly complex systems,such as proteins,although the origin of such collective motions has remained *** we present a picture of temperature and hydration dependence of collective excitations in green fluorescent protein(GFP)obtained by inelastic neutron *** results provide evidence that such excitations can be used as a measure of flexibility/softness and are possibly associated with the protein’s ***,we show that the hydration water in GFP interferes with the phonon propagation pathway,enhancing the structural rigidity and stability of GFP.

关键词： scattering collective excitation

Nonlinear Absorption and Low-threshold Two-photon Pumped Amplified Stimulated Emission from FAPbBr_(3) Nanocrystals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

发光学报 2024年第8期45卷 1281-1291页

作者： WANG Yajuan TAY Yong Kang eugene WANG Fang YU Sheng SUM Tze Chien LIU Wei School of Materials and Chemical Engineering Ningbo University of TechnologyNingbo 315211China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore College of Optical Mechanical and Electrical EngineeringZhejiang A&F UniversityHangzhou 311300China

Formamidinium lead bromide(FAPbBr_(3))nanocrystals(NCs)have been considered to be a good optoelectronic material due to their pure green emission,excellent stability and superior carrier transport ***,two-photon pumped amplified spontaneous emission(ASE)and the corresponding nonlinear optical properties of FAPbBr_(3) NCs are scarcely ***,we synthesized colloidal FAPbBr_(3) NCs with different sizes by changing the molar ratio of FABr/PbBr_(2) in the precursor solution,using ligand assisted precipitation(LARP)technology at room ***(PL)and time resolved photoluminescence(TRPL)spectroscopy were measured to characterize their ASE *** their nonlinear optical properties were studied through the Zscan technique and the two-photon excited fluorescence *** stimulated emission properties including oneand two-photon pumped ASE have been realized from FAPbBr_(3) *** large two-photon absorption coefficient(0.27 cm/GW)and high non-linear absorption cross-section(7.52×10^(5) GM),ASE with threshold as low as 9.8μJ/cm^(2) and 487μJ/cm^(2) have been obtained from colloidal FAPbBr_(3) NCs using one-and two-photon *** results indicate that as a new possible green-emitting frequency-upconversion material with low thresholds,FAPbBr_(3) NCs hold great potential in the development of high-performance two-photon pump lasers.

关键词： perovskites formamidinium lead bromide nanocrystals nonlinear optical gain amplified spontaneous emission

Black Hole Complementarity in Terms of the Outsider and Insider Perspectives

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第2期15卷 184-192页

作者： eugene Terry Tatum Independent Researcher Bowling Green Kentucky USA

A complementarity hypothesis concerning outsider and insider perspectives of a gargantuan black hole is proposed. The two thought experiments presented herein are followed by a brief discussion of a new interpretation of black hole interior “space-and-time-reversal”. Specifically, it is proposed that the “singularity” space of the black hole interior is time-like and the expansion time of the black hole interior is space-like. The resemblance of this new insider interpretation to our own expanding and redshifting big bang universe is compelling.

关键词： Black Holes Complementarity Cosmological Models Rh = ct Models Flat Space Cosmology Schwarzschild Cosmology Thought Experiment Dark Energy Quantum Vacuum

A Solution to the Cosmological Constant Problem Using the Holographic Principle (A Brief Note)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第2期15卷 159-166页

作者： eugene Terry Tatum Independent Researcher Bowling Green Kentucky USA

This paper integrates a quantum conception of the Planck epoch early universe with FSC model formulae and the holographic principle, to offer a reasonable explanation and solution of the cosmological constant problem. Such a solution does not appear to be achievable in cosmological models which do not integrate black hole formulae with quantum formulae such as the Stephan-Boltzmann law. As demonstrated herein, assuming a constant value of Lambda over the great span of cosmic time appears to have been a mistake. It appears that Einstein’s assumption of a constant, in terms of vacuum energy density, was not only a mistake for a statically-balanced universe, but also a mistake for a dynamically-expanding universe.

关键词： Quantum Cosmology Planck Scale Cosmological Constant Black Holes Holographic Principle Flat Space Cosmology AdS-CFT ER = EPR Cosmology Model

The Origin of Quarks in Quantum Gravity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第8期15卷 1229-1245页

作者： Edwin eugene Klingman Cybernetic Micro Systems Inc. San Gregorio USA

A theory of quantum gravity has recently been developed by the author based on the concept that all forces converge to one at the moment of Creation. This primordial field can only interact with itself, as no other field exists, contrasting with the Standard Model of Particle Physics in which each elementary particle is an excitation in its own quantum field. The primordial field theory of quantum gravity has produced a model of a fermion with a mass gap, ½-integral spin, discrete charge, and magnetic moment. The mass gap is based on an existence theorem that is anchored in Yang-Mills, while Calabi-Yau anchors ½-integral spin, with charge and magnetic moment based on duality. Based on N-windings, this work is here extended to encompass fractional charge, with the result applied to quarks, yielding fermion mass and charge in agreement with experiment and novel size correlations and a unique quantum gravity-based ontological understanding of quarks.

关键词： Duality Calabi-Yau Topology Fermion Charge Primordial Field Self-Interaction Equations Yang-Mills Gravity Quantum Gravity Ontology of Quarks

Upsilon Constants and Their Usefulness in Planck Scale Quantum Cosmology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第2期15卷 167-173页

作者： eugene Terry Tatum Independent Researcher Bowling Green Kentucky USA

This paper introduces the two Upsilon constants to the reader. Their usefulness is described with respect to acting as coupling constants between the CMB temperature and the Hubble constant. In addition, this paper summarizes the current state of quantum cosmology with respect to the Flat Space Cosmology (FSC) model. Although the FSC quantum cosmology formulae were published in 2018, they are only rearrangements and substitutions of the other assumptions into the original FSC Hubble temperature formula. In a real sense, this temperature formula was the first quantum cosmology formula developed since Hawking’s black hole temperature formula. A recent development in the last month proves that the FSC Hubble temperature formula can be derived from the Stephan-Boltzmann law. Thus, this Hubble temperature formula effectively unites some quantum developments with the general relativity model inherent in FSC. More progress towards unification in the near-future is expected.

关键词： Quantum Cosmology Hubble Constant Planck Scale Upsilon Constant Flat Space Cosmology Black Holes CMB Temperature ΛCDM Cosmology Quantum Gravity Unification

Calabi-Yau Topology of Primordial Fermions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第1期15卷 132-158页

作者： Edwin eugene Klingman Cybernetic Micro Systems Inc. San Gregorio CA USA

Quantum field theory creates fermions via abstract operators exciting abstract fields, with a specific field for each type of specific particle. This operator algebra lends itself well to quantum statistics, nevertheless, our physical understanding of this process is nonintuitive at best. In this paper we analyze the creation of fermions from primordial gauge field quantum gravity loops in the context of Calabi-Yau manifold theory. I extend a prior mass-gap treatment based on Yang-Mills gauge theory of higher order self-interaction to include the half-integral spin of fermions.

关键词： Calabi-Yau Topology Fermion Spin Particle Genesis Primordial Field Self-Interaction Equations Yang-Mills Gravity

The Origin of Electric Charge in Quantum Gravity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第4期15卷 511-535页

作者： Edwin eugene Klingman Cybernetic Micro Systems Inc. San Gregorio CA USA

A model fermion has been produced in a theory of quantum gravity that establishes the existence of a mass gap and half-integral spin. The third requirement for the fermion is electric charge. We herein develop a dualism-based analysis that explains the origin of charge at the fermion scale in a primordial field theory of quantum gravity.

关键词： Duality Topology Parallel Transport Particle Genesis Primordial Field Self-Interaction Equations Yang-Mills Gravity

SUV39H1-driven NFATc1 methylation is essential for the c-Cbl-mediated degradation of NFATc1 in an osteoclast lineage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第4期11卷 86-89页

作者： Do-Won Jeong Hye-Jin Kim Jong-Wan Park Seulbee Lee Hyeryeon Jung eugene C.Yi Nacksung Kime Yang-Sook Chun Department of Biomedical Sciences Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Physiology Seoul National University College of MedicineSeoul 03080Republic of Korea Ischemic/Hypoxic Disease Institute Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Molecular Medicine and Biopharmaceutical Sciences Graduate School of Convergence Science and Technology and College of Medicine Or College of PharmacySeoul National UniversitySeoul 03080Republic of Korea Department of Pharmacology Chonnam National University Medical SchoolGwangju 61469Republic of Korea

Bone undergoes continuous remodeling by tightly-coordinated actions of bone-resorbing osteoclasts and boneforming osteoblasts.1 Recent studies document that the dysregulation of histone methylation profiles is associated with the progression of ***,the specific epigenetic modifiers are incompletely *** this study,we demonstrate an inhibitory role of a variegation 3-9 homolog 1(SUV39H1)in osteoclast formation.

关键词： osteoclast remodeling incomplete