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Search Results: 1 - 10 of 1373 matches for " Hideo Niiid "
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Impact of diabetes on long term follow-up of the elderly patients with chronic total occlusion post percutaneous coronary intervention
The impact of Diabetes on Long Term Follow Up of the Elderly Patients with Chronic Total Occlusion Post Percutaneous Coronary Intervention

Wei Liu,Kenji Wagatsum,Hideo Niiid,Mikihito Tod,Hideo Amano,Yasuto Uch,
Wei Liu
,Kenji Wagatsum,Hideo Niii,Mikihito To,Hideo Amano,Yasuto Uch

老年心脏病学杂志(英文版) , 2013,
Abstract: Background The prognosis of elderly patients with chronic total occlusion (CTO) and diabetes mellitus (DM) treated with percutaneous coronary intervention (PCI) is not known. Objective To investigate the effect of diabetes on long-term follow-up of CTO after PCI in elderly patients. Methods A total of 153 elderly patients (age > 65 years old) with CTO lesions which were successfully treated with PCI were enrolled. Fifty one patients with diabetes and 102 without diabetes were compared for long-term outcomes (mean follow up: 36 ? 12 months). Major adverse cardiac events (MACE) which include death, myocardial infarction or target lesion revascularization (TLR) were considered as a combined endpoint. Results The combined endpoint occurred in 29.4% of diabetes patients, and 11.3% of the patients without diabetes (P < 0.05). The Cox proportional hazards model identified: drug eluting stent (DES) or bare metal stent (BMS) (HR: 0.13, 95% confidence interval (95% CI): 0.03–0.62, P = 0.004), DM (HR: 6.69, 95% CI: 1.62–15.81, P = 0.01) and final minimal lumen diameter (MLD) (HR: 0.37, 95% CI: 0.13–0.90, P = 0.03 ) as independent predictors of MACE, DM with renal impairment (HR: 6.64, 95% CI: 1.32–33.36, P = 0.02), HBA1C on admission (HR: 1.79, 95% CI: 1.09–2.94, P = 0.02), as independent predictors of MACE at long term follow-up. Conclusions
Matter-Antimatter Coexistence Method for Finite Density QCD toward a Solution of the Sign Problem  [PDF]
Hideo Suganuma
Journal of Modern Physics (JMP) , 2017, DOI: 10.4236/jmp.2017.812123
Abstract: Toward the lattice QCD calculation at finite density, we propose “matter-antimatter coexistence method”, where matter and anti-matter systems are prepared on two parallel R4-sheets in five-dimensional Euclidean space-time. We put a matter system M with a chemical potential μ∈C on a R4-sheet, and also put an anti-matter system \"\"with\"\"on the other R4-sheet shifted in the fifth direction. Between the gauge variables?\"\" in M and \"\"in\"\", we introduce a correlation term\"\"with a real parameter λ. In one limit of \"\", a strong constraint\"\" is realized, and therefore the total fermionic determinant becomes real and non-negative, due to the cancellation of the phase factors in M and \"\", although this system resembles QCD with an isospin chemical potential. In another limit of \"\", this system goes to two separated ordinary QCD systems with the chemical potential of μ and \"\". For a given finite-volume lattice, if one takes an enough large value of λ, \"\" is realized and phase cancellation approximately occurs between two fermionic determinants in M and\"\", which suppresses the sign problem and is expected to make the lattice calculation possible. For the obtained gauge
Mechanical, Thermal and Electrical Properties of Lotus-Type Porous Metals  [PDF]
Hideo Nakajima
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.92017
Abstract: Lotus-type porous metals are fabricated by directional solidification of molten metals dissolving hydrogen. Unidirectional pores cause various anisotropic features of mechanical, thermal and electrical properties. Tensile, compressive and fatigue strength parallel to the pore direction are higher than those perpendicular to the pore direction. Besides, thermal and electrical conductivities parallel to the pore direction are higher than those perpendicular to the pore direction. Such anisotropy is attributed to the difference in the pinning cross-sectional area due to the dislocations and the scattering cross-sectional area due to electrons. The pore cross-sectional area perpendicular to the pore direction is much larger than that parallel to the pore direction. It is surmised that such difference in pore cross-section results in the anisotropy in mechanical, thermal and electrical properties.
Preparation of α-Bromoketones and Thiazoles from Ketones with NBS and Thioamides in Ionic Liquids  [PDF]
Yuhta Izumisawa, Hideo Togo
Green and Sustainable Chemistry (GSC) , 2011, DOI: 10.4236/gsc.2011.13010
Abstract: Ketones smoothly reacted with NBS in the presence of a catalytic amount of ptoluenesulfonic acid to give α-bromoketones in good yields in typical ionic liquids, such as [bmim]PF6 and [bmpy]Tf2N, and the ionic liquids could be repeatedly used for the same reaction after the extraction of the α-bromoketones. Then, the one-pot conversion of ketones into thiazoles by the treatment with NBS, and subsequently with thioamides could be also carried out in [bmim]PF6 and [bmpy]Tf2N, respectively Thus, [bmim]PF6 and [bmpy]Tf2N could be used as recyclable reaction media for the preparation α-bromoketones and thiazoles from ketones.
The Treatment Strategy of Patients with Sleep Apnea Syndrome in Our Department and Subsequent Course  [PDF]
Takanori Fujioka, Hideo Yamane
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2014, DOI: 10.4236/ijohns.2014.34033
Abstract:

It is known that acute or chronic heart failure can develop in patients with grave sleep apnea syndrome (SAS), and known to have the social problem including an accident and the decrease of the labor will. Several medical treatments are now available for SAS. We considered problems of the treatment based on the practice situation of our department about the present conditions and subsequent treatment. The subjects consisted of 306 patients. We measured Epworth Sleepiness Scale (ESS) and apnea hypopnea index (AHI) after polysomnography in all patients at the first time and 6 months later. So, it was found that AHI and ESS decreased when we could be treated in the SAS patients appropriately. It was confirmed that the choice of the appropriate regimen was important.

Public Perception of Physical Risks: Effect of the Experience of Repeated Explosion Accidents at a Chemical Plant  [PDF]
Yusuke Koshiba, Hideo Ohtani
Open Journal of Safety Science and Technology (OJSST) , 2015, DOI: 10.4236/ojsst.2015.52006
Abstract: To explore the influence of experiencing accidental explosions, a questionnaire-based survey was conducted. This paper compares the risk perception characteristics of inhabitants living near a chemical plant at which accidental explosions occurred (group A) and of those living near a plant where no serious accidents have occurred (group B). The survey forms contain the following items: demographics, knowledge about causes of accidental explosion, dread, frequency, and risk rating variables. In addition, participants of group A are asked about their level of participation in physical risk communication. The survey reveals that 1) participants of group A have a greater sense of dread than those of group B; 2) participants of group A are more likely to perceive accidental explosions in chemical plants that occur more frequently; 3) risk rating of physical risks is independent of that of health risks; 4) the “frequency” variable is a key factor that influences decision making whether they participate in physical risk communication or not.
Non-Perturbative Analysis of Various Mass Generation by Gluonic Dressing Effect with the Schwinger-Dyson Formalism in QCD  [PDF]
Shotaro Imai, Hideo Suganuma
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.78073
Abstract: As a topic of “quantum color dynamics”, we study various mass generation of colored particles and gluonic dressing effect in a non-perturbative manner, using the Schwinger-Dyson (SD) formalism in (scalar) QCD. First, we review dynamical quark-mass generation in QCD in the SD approach as a typical fermion-mass generation via spontaneous chiral-symmetry breaking. Second, using the SD formalism for scalar QCD, we investigate the scalar diquark, a bound-state-like object of two quarks, and its mass generation, which is clearly non-chiral-origin. Here, the scalar diquark is treated as an extended colored scalar field, like a meson in effective hadron models, and its effective size R is introduced as a form factor. As a diagrammatical difference, the SD equation for the scalar diquark has an additional 4-point interaction term, in comparison with the single quark case. The diquark size R is taken to be smaller than a hadron, R ~ 1 fm, and larger than a constituent quark, R ~ 0.3 fm. We find that the compact diquark with R ~ 0.3 fm has a large effective mass of about 900 MeV, and therefore such a compact diquark is not acceptable in effective models for hadrons. We also consider the artificial removal of 3- and 4-point interaction, respectively, to see the role of each term, and find that the 4-point interaction plays the dominant role of the diquark self-energy. From the above two different cases, quarks and diquarks, we guess that the mass generation of colored particles is a general result of non-perturbative gluonic dressing effect.
Solution of Nonlinear Advection-Diffusion Equations via Linear Fractional Map Type Nonlinear QCA  [PDF]
Shinji Hamada, Hideo Sekino
Journal of Quantum Information Science (JQIS) , 2016, DOI: 10.4236/jqis.2016.64017
Abstract: Linear fractional map type (LFMT) nonlinear QCA (NLQCA), one of the simplest reversible NLQCA is studied analytically as well as numerically. Linear advection equation or Time Dependent Schrödinger Equation (TDSE) is obtained from the continuum limit of linear QCA. Similarly it is found that some nonlinear advection-diffusion equations including inviscid Burgers equation and porous-medium equation are obtained from LFMT NLQCA.
The Approximation of Bosonic System by Fermion in Quantum Cellular Automaton  [PDF]
Shinji Hamada, Hideo Sekino
Journal of Quantum Information Science (JQIS) , 2017, DOI: 10.4236/jqis.2017.71002
Abstract: In one-dimensional multiparticle Quantum Cellular Automaton (QCA), the approximation of the bosonic system by fermion (boson-fermion correspondence) can be derived in a rather simple and intriguing way, where the principle to impose zero-derivative boundary conditions of one-particle QCA is also analogously used in particle-exchange boundary conditions. As a clear cut demonstration of this approximation, we calculate the ground state of few-particle systems in a box using imaginary time evolution simulation in 2nd quantization form as well as in 1st quantization form. Moreover in this 2nd quantized form of QCA calculation, we use Time Evolving Block Decimation (TEBD) algorithm. We present this demonstration to emphasize that the TEBD is most natu-rally regarded as an approximation method to the 2nd quantized form of QCA.
A Pipe Inspection Using a Circumferential SH-Mode Plate Wave Generated in a Pipe by an Electromagnetic Acoustic Transducer (EMAT)  [PDF]
Riichi Murayama, Hideo Nishino
World Journal of Engineering and Technology (WJET) , 2018, DOI: 10.4236/wjet.2018.63043
Abstract: Inspection of a pipeline is essential for the safe use of such facilities. A trial sensor using an electromagnetic acoustic transducer (EMAT), which can generate the SH-mode plate wave propagating in the circumferential direction, has been developed to realize this objective. It consists of a circulating electromagnetic induction coil around the pipe and many permanent magnets arranged on the surface of the pipe in the circumferential direction. It is postulated that the intensity of the SH-mode plate wave propagating in the circumferential direction is dependent on any defects in the circumferential direction. A resonance method was then utilized to obtain a stronger received signal. As a result, it was confirmed that the resonance status can be detected. The relationship between the signal intensity and the pipe thickness was then evaluated. It was confirmed that the wall thickness of about 20% can be detected under a static condition. Finally, a moving test has been executed by using an axially traveling device manufactured by trial. The test pipes with different sizes of drilled holes were prepared. The change in the received signal intensity according to different sizes of the drilled holes was successfully detected.
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