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A New Electron Charge Distribution Function of Electron

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Journal of Modern Physics 2023年第2期14卷 111-126页

作者： teruo kurai Unoki Ota-ku Tokyo Japan

Here we derive a new charge distribution function for an electron by using as an equation of motion a segment of charge whose self energy interaction is due to electric field potential. Our method is based on the consideration that a charged distribution function should be represented as an eigenfunction of electron mass energy. We compare our electron charge distribution function to that of Weinberg’s η(r) and our charged electron radius to that obtained by Kim.

关键词： Charge Distribution Function Electron

Light Meson Mass Spectra with Massive Quarks

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Journal of Modern Physics 2021年第11期12卷 1545-1572页

作者： teruo kurai IEEE Member 1-32-1 Nishifu-Machi Fuchu-Shi Tokyo Japan

We investigate light meson mass spectra with massive u, d, and s quarks and with a spin effect under a bound system in 3 + 1 dimensional QCD by using the first order perturbation correction. In the process of determining charged kaon and neutral kaonmasses, we obtain masses of u, d, and s quarks that are slightly smaller than the currently accepted values. Using these masses, we obtain light meson mass spectra that includes mass splitting of charged and neutral kaons and ρ mesons. The most interesting of our results is that the pion mass remains unchanged even though u, d, and s quarks become massive.

关键词： Light Meson Mass Quark Mass Pion Mass Quantum Chromodynamics

Describing a Baryon as a Meson Pair

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Journal of Modern Physics 2020年第11期11卷 1827-1841页

作者： teruo kurai IEEE Tokyo Japan

We propose a new description of a baryon as a pair of mesons. This description is an extension of the previously proposed description of a nucleon as a pair of pions. The purpose of this article is to show the following two possibilities. The first one is that it shows the qualitative explanation to support our description of a nucleon as a pair of pions and the second one is that it gives the systematic way of estimation of baryon mass not only for light baryons but also for heavy baryons (charm baryons and bottom baryons). Each isospin group is constructed of both baryons and antibaryons. This way of construction is consistent with that of mesons. The results obtained are listed in tables (Tables 1-9). This shows that the generalized Gell-Mann-Nishijima relation equation holds under the condition that the baryon number is 0 and that the obtained masses are fairly good, even for heavy baryons. Our description also yields several examples of baryon decay modes.

关键词： Baryon Description Baryon Isospin Baryon Mass Baryon Decay Mode

Proton and Neutron Electromagnetic Form Factors Based on Bound System in 3 + 1 Dimensional QCD

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Journal of Modern Physics 2020年第5期11卷 741-765页

作者： teruo kurai 1-32-1 Nishifu-machi Fuchu-shi Tokyo Japan

We propose a new description of a nucleon as a pair of pions. The baryon number of our description of nucleon is not 1 but 0. However, this is probable because the proton spin crisis shows that the baryon spin cannot tell the number of composing quarks anymore. Because we use the derived pion wave function to describe a nucleon, our description has automatically the pionic degree of freedom and can be compared to the constituent quark model. Using this description, we investigate the electric charge and magnetization density functions of protons and neutrons. The electric charge density function of neutron is quite similar to those of Galster model and Maints data except the magnitude of singularity. The density functions of proton also show the similar behavior as those of Kelly’s except near origin. Taking the Fourier transform of the density functions, we obtain the Sachs electromagnetic form factors that can be compared to those in the parametrization derived by Ye et al.

关键词： Density Function Electromagnetic Form Factor

PEO coating on Mg-Ag alloy:The incorporation and release of Ag species

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镁合金学报(英文) 2023年第6期11卷 2182-2195页

作者： Xinxin Zhang Yupeng Zhang You Lv Zehua Dong Lei Yang Erlin Zhang teruo Hashimoto Xiaorong Zhou Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China Hubei Engineering Research Centre for Biomaterials and Medical Protective Materials Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory for Anisotropy and Texture of Materials Education Ministry of ChinaSchool of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Corrosion and Protection Centre Department of MaterialsThe University of ManchesterManchester M139PLUnited Kingdom

In the present study,the distribution of Ag in the coating formed on Mg-Ag alloy by plasma electrolytic oxidation(PEO)and its ionic release kinetics when exposed to a 0.9 wt.%Na Cl solution at 37℃have been *** metallic Ag and Ag oxide particles with~5 to~40 nm in diameters were observed in the PEO ***,an Ag-enriched layer of~20 nm in thickness at the substrate/coating interface was also *** PEO coating on the Mg-Ag alloy not only increases its corrosion resistance with the corrosion current density decreasing by up to 3 orders of magnitude from 8.04×10^(-3)to 4.03×10^(-6)A/cm^(2),but also controls the release of Ag+to the level that is sufficient for anti-infective efficacy without causing cytotoxicity to mammal cells.

关键词： Mg-Ag alloy Plasma electrolytic oxidation Ag distribution Ag release Corrosion resistance

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Effects of dissolved organic matter on the growth and pigments synthesis of Spirulina platensis (Arthrospira)

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Progress in Natural Science:Materials International 2006年第1期16卷 50-54页

作者： WATANABE teruo China Hainan DIC Microalgae Co. Ltd. Haikou International Commercial Centre 38 Haikou 570102

Excessive accumulation of dissolved organic matter (DOM) in the culture ponds of Spirulina platensis is usually considered to be one of the potential factors affecting the production of S. platensis, however, we are not quite aware of effects of DOM on the growth and pigments synthesis of S. platensis. In the present study, S. platensis was grown in batch or semi-continuous cultures using the filtrate in the culture ponds that had not been renewed for years. It was found that disssolved organic carbon up to 60 mg/L did not bring about an inhibitory effect on the growth of S. platensis, but increased the contents of chlorophyll a and phycocyanin instead. However, further accumulation of dissolved organic matter could decrease the content of chlorophyll a .

关键词： Chl a dissolved organic matter PC specific growth rate Spirulina platensis (Arthrospira).

Effects of solar ultraviolet radiation on the photochemical efficiency, photosynthetic pigments and biomass production of Spirulina platensis

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Progress in Natural Science:Materials International 2005年第5期15卷 477-480页

作者： teruo WATANABE China Haikou 570102 Haikou International Commercial Centre 38 Hainan DIC Microalgae Co. Ltd.

Effects of solar ultraviolet radiation (UVR) on Spirulina platensis were studied by investigating its photochemical efficiency, photosynthetic pigments and biomass production while exposed to full spectrum solar radiation or depleted of UVR for understanding how and to what extent UVR influences its photosynthetic physiology and production. It was found that UVR brought about an extra inhibition of photochemical efficiency by 26%—30%. The greatest inhibition of photochemical efficiency in S. platensis was observed at noontime, and then recovered to some extent in late afternoon no matter which treatment they were exposed to. The contents of chlorophyll a, phycocyanin and carotenoids increased during initial stage of the exposure, but decreased with elongated exposure. UVR decreased the biomass yield by about 6%. It indicated that filtering out UVR of solar radiation would raise the productivity of S. platensis, which is an important factor that should be considered in the production.

关键词： ultraviolet radiation Spirulina platensis photochemical efficiency biomass production pigments.

Surface properties of nitrogen-ion-implanted TiNi shape memory alloy

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Journal of University of Science and Technology Beijing 2006年第2期13卷 154-157页

作者： Chongyan Leng teruo Asaoka Rong Zhou School of Materials and Metallurgical Engineering Kunming University of Science and Technology Kunming 650093 China Department of Intelligent and Mechanical Engineering Tokyo Denki University Hatoyama Hiki-Gun Saitama 350-0394 Japan School of Mechanical Engineering Kunming University of Science and Technology Kunming 650093 China

X-ray diffraction （XRD）, auger electron spectroscopy （AES）, and X-ray photoelectron spectroscopy （XPS） were used to characterize the surface properties of the N^ ＋-ion-implanted TiNi alloy. There is a high nitrogen content region at the outermost surface of the N^＋-ion-implanted TiNi alloy. The detected nitrogen exists mainly in the form of TiN. Small amounts of Ti305 and TiO2 also exist on the surface of the N^＋-ion-implanted TiNi sample. The modified layer of the N^＋-ion-implanted sample can work as an obstacle layer of the nickel＇s dissolution, which obstructs Ni dissolving from the TiNi surface effectively.

关键词： shape memory alloys TiNi surface properties

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Evaluation of gut dysbiosis using serum and fecal bile acid profiles

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World Journal of Clinical Cases 2022年第34期10卷 12484-12493页

作者： Tadakuni Monma Junichi Iwamoto Hajime Ueda Makoto Tamamushi Fumio Kakizaki Naoki Konishi Shoichiro Yara teruo Miyazaki Takeshi Hirayama Tadashi Ikegami Akira Honda Department of Gastroenterology and Hepatology Tokyo Medical University Ibaraki Medical CenterInashiki-Gun 300-0395Japan Joint Research Center Tokyo Medical University Ibaraki Medical CenterInashiki-Gun 300-0395Japan

Dysbiosis in the intestinal microflora can affect the gut production of microbial metabolites,and toxic substances can disrupt the barrier function of the intestinal wall,leading to the development of various *** levels of Clostridium subcluster XIVa(XIVa)are associated with the intestinal dysbiosis found in inflammatory bowel disease(IBD)and Clostridium difficile infection(CDI).Since XIVa is a bacterial group responsible for the conversion of primary bile acids(BAs)to secondary BAs,the proportion of intestinal XIVa can be predicted by determining the ratio of deoxycholic acid(DCA)/[DCA+cholic acid(CA)]in feces *** example,serum DCA/(DCA+CA)was significantly lower in IBD patients than in healthy controls,even in the remission *** results suggest that a low proportion of intestinal XIVa in IBD patients might be a precondition for IBD onset but not a consequence of intestinal *** report showed that a reduced serum DCA/(DCA+CA)ratio could predict susceptibility to ***,the BA profile,particularly the ratio of secondary to primary BAs,can serve as a surrogate marker of the intestinal dysbiosis caused by decreased XIVa.

关键词： Gut dysbiosis Clostridium subcluster XIVa Bile acids HPLC-MS/MS Inflammatory bowel diseases Clostridium difficile infection