2型糖尿病患者における他動式体幹運動機器の使用が酸素摂取量と運動に対する自己効力感に及ぼす影響

広島大学(Hiroshima University)博士(保健学)Doctor of Philosophy in Health Sciencedoctora

Evaluation of Compressor Reliability for HFO Refrigerants

Responses to an international flamework on climate change, such as the Kigali Agreement in 2016, have been discussed in an industrial field. The phase down regulation of CFC and HCFC refrigerant has been discussed and performed under the Montreal Protocol for refrigerants from the viewpoint of ozone layer protection. From the viewpoint of preventing global warming, HFC reduction plans are currently being proposed by North America, Europe, India, etc. within the framework of the Protocol. A developing country where the phase-out of CFCs and HCFCs began in 2013, are growing trend to switch to HFC or HFO mixed refrigerants with lower GWP than R410A. A revision of the regulations related to HFC are also being promoted in each region. The GWP upper limit for each equipment application was set together with the HFC phase down in Europe which due to the F-gas regulations. R32, HFO refrigerants such as R1234yf and R1234ze, or a mixed refrigerant of HFC and HFO are proposed as candidates for low GWP refrigerants. The problem of R32 was the higher discharge gas temperature than R410A, but the problem could be solved by temperature control and suitable refrigeration oil. On the other hand, the problem of refrigerants HFO and mixed HFO is easy to decompose than HFC. When HFO is decompose, it is generated acid such as fluorinated acid and trifluoroacetic acid. These acids make which is reduced the compressor reliability. We selected of suitable refrigeration oil and materials for the HFO and confirmed the compressor reliabilit

Mística rubro negra: uma análise sobre clube, imprensa e torcida

Estuda um dos maiores fenômenos da cultura brasileira: o futebol. Ao focar no Clube de Regatas do Flamengo, pretende-se desvendar a mística existente em torno do time rubro-negro carioca. Para isso, a análise propõe-se a avaliar o universo simbólico que envolve o clube, a relação dele com a imprensa e o que leva torcedores a se engajarem em projetos de torcidas organizadas. Essas três peças-chave, mesmo que analisadas em capítulos distintos, estão intimamente associadas. Assim pretende-se refletir sobre a proposta de que o clube cria a aura mística, o torcedor a vive e a imprensa a constrói diariamente. O objetivo fundamental desta pesquisa é estudar o jornalismo esportivo e como ele é influenciado pelo time do Flamengo. Esta análise é relevante na medida em que possibilita uma reflexão crítica sobre a função social do jornalismo na difusão da paixão pelo futebol. Embora não seja o cerne do estudo, será necessário voltar no tempo e relembrar momentos importantes da história do clube. Especialmente a década de 80, quando o time viveu período de glórias que muito contribuíram para a imagem do Flamengo atualmente. Apesar de parecer, à primeira vista, um trabalho pró-rubro-negro, o presente estudo tem a preocupação constante de manter distanciamento crítico ao analisar aspectos que fazem este time ser considerado o “mais querido” por 35 milhões de brasileiros

Specific Heat Study of an S=1/2 Alternating Heisenberg Chain System F_5PNN Under Magnetic Field

We have measured the specific heat of an S=1/2 antiferromagnetic alternating Heisenberg chain pentafulorophenyl nitronyl nitroxide under magnetic fields up to H>H_C2. This compound has the field-induced magnetic ordered (FIMO) phase between H_C1 and H_C2. Characteristic behaviors are observed depending on the magnetic field up to above H_C2 outside of the H-T boundary for the FIMO. Temperature and field dependence of the specific heat are qualitatively in good agreement with the theoretical calculation on an S=1/2 two-leg ladder. [Wang et al. Phys. Rev. Lett 84 5399 (2000)] This agreement suggests that the observed behaviors are related with the low-energy excitation in the Tomonaga-Luttinger liquid.Comment: 4pages, 4figures, replaced with revised version accepted to Physical Review Letter

Non-Fermi Liquid Behavior in Dilute Quadrupolar System Prx_{x}La1−x_{1-x}Pb3_3 with xx≤\le0.05

We have studied the low-temperature properties of Pr$_{x}$La$_{1-x}$Pb$_{3}$ with non-Kramers $\Gamma_{3}$ quadrupolar moments of the crystal-electric-field ground state, for a wide concentration range of Pr ions. For $x$$\le$0.05, the specific heat $C/T$ increases monotonically below $T$=1.5 K, which can be scaled with a characteristic temperature $T^{*}$ defined at each concentration $x$. The electrical resistivity $\rho$$(T)$ in the corresponding temperature region shows a marked decrease deviating from a Fermi-liquid behavior $\rho$$(T)$$\propto$$T^{2}$. The Kondo effect arising from the correlation between the dilute $\Gamma_{3}$ moments and the conduction electrons may give rise to such anomalous behavior

Unusual Low-Temperature Phase in VO2_2 Nanoparticles

We present a systematic investigation of the crystal and electronic structure and the magnetic properties above and below the metal-insulator transition of ball-milled VO$_2$ nanoparticles and VO$_2$ microparticles. For this research, we performed a Rietveld analysis of synchrotron radiation x-ray diffraction data, O $K$ x-ray absorption spectroscopy, V $L_3$ resonant inelastic x-ray scattering, and magnetic susceptibility measurements. This study reveals an unusual low-temperature phase that involves the formation of an elongated and less-tilted V-V pair, a narrowed energy gap, and an induced paramagnetic contribution from the nanoparticles. We show that the change in the crystal structure is consistent with the change in the electronic states around the Fermi level, which leads us to suggest that the Peierls mechanism contributes to the energy splitting of the $a_{1g}$ state. Furthermore, we find that the high-temperature rutile structure of the nanoparticles is almost identical to that of the microparticles.Comment: 7 pages, 8 figures, 2 table

La impurity effects on quadrupolar ordering in PrPb3

We study low-temperature properties of Pr1-xLaxPb3 with the ground state of a non-Kramers ﾎ・sub>3 for 0<~x<~0.8. From the concentration dependence of the specific heat, quadrupolar ordering is expected to occur only up to x竏ｼ0.02. For a wide range of La concentrations where the ordering is absent, the specific heat shows a T linear variation, which is in an excellent agreement with the result obtained by the model for amorphous materials with a random configuration of a two-level system. Impurity effects on quadrupolar moments will be discussed