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Wood anatomy chronologies of scots pine in the foothills of the Western sayan(siberia)

Journal of Forestry Research 2024年第3期35卷 13-27页

作者： Elena A.Babushkina Dmitry R.Dergunov Mikhail s.Zharkov Liliana V.Belokopytova Dina F.Zhirnova Bao Yang Jingjing Liu Xiaomei peng eugene A.Vaganov Khakass Technical Institute Siberian Federal UniversityAbakan 655017Russia Institute of Ecology and Geography Siberian Federal UniversityKrasnoyarsk 660036Russia Mathematical Methods and IT Department Siberian Federal UniversityKrasnoyarsk 660036Russia Key Laboratory of Desert and Desertification Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000People's Republic of China school of Geographic and Oceanographic sciences Nanjing UniversityNanjing 210093People's Republic of China Department of Dendroecology V.N.Sukachev Institute of ForestSiberian Branch of the Russian Academy of ScienceKrasnoyarsk 660036Russia

Recent methodological advances in quantitative wood anatomy have provided new insights into the climatic responses of radial growth at the scale of cell structure of tree rings. This study considered long-term chronologies of tracheid measurements, indexed by a novel approach to separate their specific climatic responses from signal recorded in cell production(closely reflected in tree-ring width). To fill gaps in understanding the impact of climate on conifer xylem structure, scots pine(pinus sylvestris L.)trees > 200 years old were selected within the forest-steppe zone in southern siberia. such habitats undergo mild moisture deficits and the resulting climatic regulation of growth processes. Mean and maximum values of cell radial diameter and cell wall thickness were recorded for each tree *** a low level of climatogenic stress, components of cell chronologies independent of cambial activity were separated to obtain significant climatic signals revealing the timing of the specific stages of tracheid differentiation. Cell expansion lasted from mid-April to July and was impacted similarly to tree-ring width(stimulated by precipitation and stressed by heat), maximum cell size formed late June. A switch in the climatic responses of mean anatomical traits indicated transition to latewood in mid-July. secondary wall deposition lasted until mid-september, suppressed by end of season temperatures. Generally, anatomical climatic responses were modulated by a less dry May and september compared with summer months.

关键词： Quantitative wood anatomy Cell radial size Cell wall thickness pinus sylvestris Climatic response

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A decomposition of light’s spin angular momentum density

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Light(science & Applications) 2024年第8期13卷 1578-1589页

作者： Alex J.Vernon sebastian Golat Claire Rigouzzo eugene A.Lim Francisco J.Rodríguez-Fortuño Department of physics King’s College LondonStrandLondon WC2R 2LSUK London Centre for Nanotechnology LondonUK

Light carries intrinsic spin angular momentum(sAM)when the electric or magnetic field vector rotates over time.A familiar vector equation calculates the direction of light’s sAM density using the right-hand rule with reference to the electric and magnetic polarisation *** Maxwell’s equations,this vector equation can be decomposed into a sum of two distinct terms,akin to the well-known poynting vector decomposition into orbital and spin *** present the first general study of this spin decomposition,showing that the two terms,which we call canonical and poynting spin,are chiral analogies to the canonical and spin momenta of light in its interaction with *** canonical momentum,canonical spin is directly *** canonical and poynting spin incorporate spatial variation of the electric and magnetic fields and are influenced by optical *** decomposition allows us to show that a linearly polarised vortex beam,which has no total sAM,can nevertheless exert longitudinal chiral pressure due to equal and opposite canonical and poynting spins.

关键词： canonical momentum angular

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A solution to the Cosmological Constant problem Using the Holographic principle (A Brief Note)

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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

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Upsilon Constants and Their Usefulness in planck scale Quantum Cosmology

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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

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How the Flat space Cosmology Model Correlates the Recombination CMB Temperature of 3000 K with a Redshift of 1100

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Journal of Modern physics 2024年第2期15卷 174-178页

作者： eugene Terry Tatum U. V. s. seshavatharam Independent Researcher Bowling Green Kentucky USA I-sERVE Hitech City Hyderabad India

This paper shows how the Flat space Cosmology model correlates the recom-bination epoch CMB temperature of 3000 K with a cosmological redshift of 1100. This proof is given in support of the recent publication that the Tatum and seshavatharam Hubble temperature formulae can be derived using the stephan-Boltzmann dispersion law. Thus, as explained herein, the era of high precision planck scale quantum cosmology has arrived.

关键词： Hubble Constant Cosmic Microwave Background Quantum Cosmology stephan-Boltzmann Upsilon Coupling Constant Flat space Cosmology ΛCDM Cosmology

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Highly selective/enantioselective pt-ReOx/C catalyst for hydrogenation of L-malic acid at mild conditions

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Journal of Energy Chemistry 2018年第3期27卷 903-912页

作者： Bair s.Bal'zhinimaev eugene a.pauks.tis.alexey p.s.knev Nikita V.Makolkin Boreskov Institute of Catalysis sB RA5 Prospect Akademika Lavrentieva5Novosibirsk 630090Russia

The catalyst preparation strategy was based on a strict introduction sequence of rhenium and platinum precursors and their strong interaction with carbon support resulted in the formation of 0.5 nm pt-Re Ox species of atomic dispersion, where platinum is metallic, while monolayer rhenium is partially oxidized（Re2＋）. The reaction kinetics was studied taking into account the process of L-malic acid association leading to the formation of inactive cyclic oligomeric species. High TOFs（ca. 50 h-1）, selectivities（ca. 99%）and stability of pt-Re Ox/C catalysts in aqueous-phase hydrogenation of L-malic acid, which are close to those of the homogeneous pincer type complexes, were revealed at mild conditions（T = 90–130 ℃）. Taking into account that（i） hydrogenation reaction occurred 2–3 orders of magnitude faster than its racemization and（ii） association of L-malic acid dominates at low temperatures and in a concentrated solution,special reaction conditions that allow obtaining chemically and optically（ee 〉 99%） pure（s）-3-hydroxy-γ-butyrolactone and（s）-1,2,4-butanetriol were found. Basing on HAADF-sTEM, EDX, Xps, and kinetic studies, the structure of active species and basic reaction pathways are proposed.

关键词： L-malic acid Hydrogenation Enantioselectivity platinum Rhenium Atomic dispersion

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Aldh2 deficiency plays a dual role in lung tumorigenesis and tumor progression

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Genes & Diseases 2024年第3期11卷 144-147页

作者： Hongjia Zhang Xueqian sun Zhanming Li Tingting Liu Fang Zhang Xinyu Meng Kaimi Li Jianhua Xu Wei He Bo Jing Tong Wang Na Ni Beibei sun Feng Yao Yadi Wu Qi Wang Jing Du eugene Y.Chin Binhua p.Zhou ping Jiang Lishun Wang Jiong Deng Key Laboratory of Cell Differentiation and Apoptosis of Chinese Minister of Education Department of PathophysiologyShanghai Jiao Tong University School of MedicineShanghai 200025China shanghai Key Laboratory for Tumor Microenvironment and Inflammation Shanghai Jiao Tong University School of MedicineShanghai200025China Department of pathology Kunming Medical UniversityKunmingYunnan 650500China Medical Research Center Binzhou Medical University HospitalBinzhouShandong 256600China Center for Traditional Chinese Medicine and Gut Microbiota Minhang HospitalFudan UniversityShanghai 201100China Department of Radiation Oncology Yantai Affiliated Hospital of Binzhou Medical UniversityYantaiShandong 264100China Department of pathology Molecular Pathology Research CenterPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of Laboratory Medicine Shanghai Pulmonary Hospital Affiliated Tongji UniversityShanghai 200080China Department of physiology School of Basic Medical SciencesWeifang Medical UniversityWeifangShandong 261021China Department of Thoracic surgery Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghai 200030China Department of Molecular and Celular Biochemistry Markey Cancer CenterUniversity of Kentucky College of MedicineLexingtonKY40506USA Department of Respiratory Medicine The Second Affiliated HospitalDalian Medical UniversityDalianLiaoning116023China peninsular Cancer Center Binzhou Medical UniversityYantaiShandong 264003China

Alcohol consumption contributes to global mortality and cancer ***(ACE),the oxidized metabolite of alcohol,is highly reactive towards DNA,resulting in DNA *** can be detoxified to acetate by acetaldehyde dehydrogenase... 详细信息

关键词： mortality damage ALDH2

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Growth of carbon nanotube arrays on various CtxMey alloy films by chemical vapour deposition method

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Journal of Materials science & Technology 2018年第3期34卷 472-480页

作者： pawel Mierczynski sergey V.Dubkov sergey V.Bulyarskii Alexander A.pavlov sergey N.skorik alexey Yu Trifonov Agnieszka Mierczynska eugene p.Kitsyuk sergey A.Gavrilov Tomasz p.Maniecki Dmitry G.Gromov Institute of General and Ecological Chemistry Lodz University of TechnologyZeromskiego 116Lodz 90-924Poland National Research University of Electronic Technology Shokin SquareZelenogradMoscow 124498Russia Institute of Nanotechnology of Microelectronics of the RAs INMEMoscow 11-9991Russia scientific-Manufacturing Complex'Technological Center' ZelenogradMoscow 124498Russia scientific Research Institute of physical problems named after F V.Lukin Proezd 4806.6ZelenogradMoscow 124460Russia The Australian Wine Research Institute Waite PrecinctHartley Grove cnr Paratoo RoadUrrbrae AdelaideSA 5064Australia

Carbon nanotube （CNT） arrays were fabricated on Ct-Me-N-（O） alloys with content of Ct in the range of 6-40 at.% by chemical vapour deposition. The Ct was a catalytic metal from the group of the following elements： Ni, Co, Fe, pd, while Me was a transition metal from the group of IV-VII of the periodic table （where Me=Ti, V, Cr, Zr, Nb, Mo, Ta, W, Re）. Carbon nanotubes were found to grow efficiently on the alloy surface with its composition containing Ti, V, Cr, Zr, Hf, Nb or Ta. The growth of CNTs was not observed when the alloy contained W or Re. Additions of oxygen and nitrogen in the alloy facilitated the formation of oxynitrides and catalyst extrusion on the alloy surface. Replacement of the metals in alloy composition affected the diameter of the resulting CNTs. The obtained results showed that the alloy films of varying thickness （10-500 nm） may be used for the CNTs growth. The resulting CNT material was highly homogenous and its synthesis reproducible.

关键词： Carbon nanotubes Amorphous alloys Chemical vapour deposition Catalytic processes Thin films

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Evidence for polarization-induced phase transformations and degradation in CH_(3)NH_(3)pbI_(3)

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Nano Research 2023年第7期16卷 9435-9442页

作者： Aleksei Yu.Grishko Maria A.Komkova Ekaterina I.Marchenko Alexandra V.Chumakova alexey B.Tarasov eugene A.Goodilin Andrei A.Eliseev Department of Materials science MSU-BIT UniversityShenzhen 517182China Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia Department of Materials science Lomonosov Moscow State UniversityMoscow 119991Russia European synchrotron Radiation Facility F-38042 GrenobleFrance

In solar cells,hybrid halide perovskites operate under constant bias,thus their stability towards electric field-induced degradation is of key *** we report on evidence of previously unidentified electric field-induced transitions and degradation path of CH_(3)NH_(3)pbI_(3)(MApbI_(3))using elemental and phase *** films of MApbI_(3) were deposited onto 1-2μm-pitch interdigitated electrodes and subjected to direct current(DC)-*** MApbI_(3) layer polarized withs pronounced ion redistribution to methylammonium-rich MApbI_(3)-y(ypbI3(xss of both methylammonium and iodine provokes degradation of MApbI_(3).Using nanofocus grazing-incidence wide-angle X-ray scattering(GIWAXs),we unambiguously showed that the bias voltage induces the transformation ofβ-MApbI_(3) to metastableδ-MApbI_(3) polymorph via alignment of polar organic cation with the electric *** transformation is partially reversible upon field ***,once formed,δ-MApbI_(3) disrupts the morphology of pristine film and undergoes decomposition toβ-MApbI_(3)(β-MApI)and pbI_(2).With the aforementioned compositional and phase changes,only MA-rich part serves as the charge separation layer,while the I-rich excitation is blocked with the pbI_(2) barrier serving as holes trapping *** observations reveal the intermediate steps in electric-field-driven degradation of halide perovskites and show the role of polar cations in the process,which is instructive for further material design with higher stability metrics.

关键词： halide perovskites stability degradation electric field ionic conductivity stoichiometry

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DEs map shows a smoother distribution of matter than expected:a possible explanation

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Research in Astronomy and Astrophysics 2021年第10期21卷 1-4页

作者： eugene Oks physics Department 380 Duncan DriveAuburn UniversityAuburnAL 36849USA

The largest and most detailed map of the distribution of dark matter in the Universe has been recently created by the Dark Energy survey(DEs)*** distribution was found to be slightly(by a few percent)smoother and less clumpy than predicted by general *** result was considered as a hint of some new physical *** the present paper we offer a relatively simple model that could explain the above result without resorting to any new physical *** model deals with the dynamics of a system consisting of a large number of gravitating neutral particles,whose mass is equal to the mass of hydrogen *** central point of the model is a partial inhibition of the gravitation for a relatively small subsystem of the entire *** would be sufficient for this subsystem to constitute just about a few percent of the total ensemble of particles for explaining the few percent more smooth distribution of dark matter(observed by the DEs team)compared to the prediction of general *** most viable candidate for the dark matter particles in this model is the second flavor of hydrogen atoms(sFHA)that has only s-states and therefore does not couple to the electric dipole radiation or even to higher multipole radiation,so that the sFHA is practically *** sFHA has experimental confirmation from atomic experiments,it does not go beyond the standard Model,it is based on standard quantum mechanics and it explains puzzling astrophysical observations of the redshifted line 21 cm from the early ***,our model explaining the DEs result of a little too smooth distribution of dark matter without resorting to any new physical laws seems to be self-consistent.

关键词： (cosmology:)dark matter gravitation atomic processes astroparticle physics

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