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Search Results: 1 - 10 of 2517 matches for " Osamu Abe "
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Does gravitational wave propagate in the five dimensional space-time with Kaluza-Klein monopole?
Osamu ABE
Physics , 1995, DOI: 10.1007/BF02741447
Abstract: The behavior of small perturbations around the Kaluza-Klein monopole in the five dimensional space-time is investigated. The fact that the odd parity gravitational wave does not propagate in the five dimensional space-time with Kaluza-Klein monopole is found provided that the gravitational wave is constant in the fifth direction.
A New Basis Function Approach to 't Hooft-Bergknoff-Eller Equations
Osamu Abe
Physics , 1999, DOI: 10.1103/PhysRevD.60.105040
Abstract: We analytically and numerically investigate the 't Hooft-Bergknoff-Eller equations, the lowest order mesonic Light-Front Tamm-Dancoff equations for U(N_C) and SU(N_C) gauge theories. We find the wavefunction can be well approximated by new basis functions and obtain an analytic formula for the mass of the lightest bound state. Its value is consistent with the precedent results.
A Note on the Proof of Theorem 13 in the Paper "Generalized Gyrovector Spaces and a Mazur-Ulam theorem"
Toshikazu Abe,Osamu Hatori
Mathematics , 2015,
Abstract: We give a revision of the proof of a Mazur-Ulam theorem for generalized gyrovector spaces given in the paper "Generalized gyrovector spaces and a Mazur-Ulam theorem" published in Publ. Math. Debrecen, 87 (2015), 393--413.
A neural network-based infection screening system that uses vital signs and percutaneous oxygen saturation for rapid screening of patients with influenza  [PDF]
Guanghao Sun, Yukiya Hakozaki, Shigeto Abe, Osamu Takei, Takemi Matsui
Health (Health) , 2013, DOI: 10.4236/health.2013.58A5002
Abstract:

Objective: Influenza is a highly infectious viral disease, which occurs epidemically almost every winter in Japan. Rapid screening of patients with suspected influenza in places of mass gathering is important to delay or prevent transmission of the infection. The aim of this study was to assess the effectiveness of our newly developed infection screening system that employed vital signs and percutaneous oxygen saturation (SpO2) as parameters in a clinical setting. Methods: Since SpO2 accurately reflects respiratory status during influenza virus infection, we upgraded our previous system by adding SpO2 as a new parameter to improve the screening accuracy. This system instantly measures SpO2 and vital signs (i.e., heart rate, respiration rate, and facial temperature), which automatically detects infected individuals via a neural network-based nonlinear discriminant function using these derived parameters. We tested the system on 45 patients with seasonal influenza (35.8℃ < body temperature < 40.0℃, 18-35 years) and 64 normal control subjects (35.0℃ < body temperature < 37.5℃, 18-30 years) at Japan Self-Defense Central Hospital in 2012. Results: The system identified 40/45 patients with influenza and 60/64 normal control subjects, and provided sensitivity, specificity, and positive and negative predictive value (PPV, NPV) of 88.8%, 93.8%, 90.9%, and 92.3%, respectively. By including SpO2 as a screening parameter, we achieved superior sensitivity and NPV compared to that reported in our previous paper (sensitivity = 88%; NPV = 82%). Conclusions: Our results suggest that SpO2 is a

The Effect of Various Factors on the Resistance and TCR of RuO2 Thick Film Resistors—Relation Between the Electrical Properties and Particle Size of Constituents, the Physical Properties of Glass and Firing Temperature
Osamu Abe,Yoshiaki Taketa,Miyoshi Haradome
Active and Passive Electronic Components , 1988, DOI: 10.1155/1988/67016
Abstract:
Glass Transition Behavior of the Quaternary Ammonium-Type Ionic Liquid: N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bromide-H2O Mixtures
Yukihiro Yoshimura,Naohiro Hatano,Yusuke Imai,Hiroshi Abe,Osamu Shimada,Tomonori Hanasaki
Journal of Thermodynamics , 2012, DOI: 10.1155/2012/575728
Abstract: By a simple differential thermal analysis (DTA) system, the concentration dependence of the glass transition temperatures (s) for the quaternary ammonium-type ionic liquid, N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bromide [DEME][Br] and H2O mixtures, after quick precooling was measured as a function of water concentration (mol% H2O). We compared the results with the previous results of [DEME][I]-H2O and [DEME][BF4]-H2O mixtures in which a double-glass transition behavior was observed. Remarkably, the [DEME][Br]-H2O mixtures basically show one- behavior and the decreases monotonically with increasing H2O content up to around =91.5. But it suddenly jumps to higher value at a specific =~92. At this very limited point, two s (1,2) which we might consider as a transition state from the structure belonging to the 1 group to another one due to the 2 group were observed. These results clearly reflect the difference in the anionic effects among Br−, I−, and BF4?. The end of the glass-formation region of [DEME][Br]-H2O mixtures is around =98.9 and moves to more water-rich region as compared to those of [DEME][BF4]-H2O (=96.0) and [DEME][I]-H2O (=95.0) mixtures.
Interaction between Pheromone and Its Receptor of the Fission Yeast Schizosaccharomyces pombe Examined by a Force Spectroscopy Study
Shintaro Sasuga,Ryohei Abe,Osamu Nikaido,Shoichi Kiyosaki,Hiroshi Sekiguchi,Atsushi Ikai,Toshiya Osada
Journal of Biomedicine and Biotechnology , 2012, DOI: 10.1155/2012/804793
Abstract: Interaction between P-factor, a peptide pheromone composed of 23 amino acid residues, and its pheromone receptor, Mam2, on the cell surface of the fission yeast Schizosaccharomyces pombe was examined by an atomic force microscope (AFM). An AFM tip was modified with P-factor derivatives to perform force curve measurements. The specific interaction force between P-factor and Mam2 was calculated to be around 120 pN at a probe speed of 1.74 μm/s. When the AFM tip was modified with truncated P-factor derivative lacking C-terminal Leu, the specific interaction between the tip and the cell surface was not observed. These results were also confirmed with an assay system using a green fluorescent protein (GFP) reporter gene to monitor the activation level of signal transduction following the interaction of Mam2 with P-factor.
Who died as a result of the tsunami? – Risk factors of mortality among internally displaced persons in Sri Lanka: a retrospective cohort analysis
Nobuyuki Nishikiori, Tomoko Abe, Dehiwala GM Costa, Samath D Dharmaratne, Osamu Kunii, Kazuhiko Moji
BMC Public Health , 2006, DOI: 10.1186/1471-2458-6-73
Abstract: A cross-sectional household survey was conducted in 13 evacuation camps for internally displaced persons (IDP). Information on all pre-tsunami family members was collected from householders, and all deaths which occurred during the recall period (77 to 80 days starting from the day of the tsunami) were recorded. The distribution of mortality and associated risk factors were analysed. Logistic regression modelling using the generalized estimating equations method was applied in multivariate analysis.Overall mortality rate out of 3,533 individuals from 859 households was 12.9% (446 deaths and 11 missing persons). The majority of the deaths occurred during and immediately after the disaster. A higher mortality was observed among females (17.5% vs. 8.2% for males, p < 0.001), children and the elderly (31.8%, 23.7% and 15.3% for children aged less than 5 years, children aged 5 to 9 years and adults over 50 years, respectively, compared with 7.4% for adults aged 20 to 29 years, p < 0.001). Other risk factors, such as being indoors at the time of the tsunami (13.8% vs. 5.9% outdoors, p < 0.001), the house destruction level (4.6%, 5.5% and 14.2% in increasing order of destruction, p < 0.001) and fishing as an occupation (15.4% vs. 11.2% for other occupations, p < 0.001) were also significantly associated with increased mortality. These correlations remained significant after adjusting for the confounding effects by multivariate analysis.A significantly high mortality was observed in women and children among the displaced population in the eastern coastal district of Sri Lanka who were examined by us. Reconstruction activities should take into consideration these changes in population structure.On 26 December 2004, the largest earthquake of the past 40 years occurred off the west coast of northern Sumatra and generated the most deadly and devastating tsunami in recorded history [1,2]. Sri Lanka was the second most seriously affected country after Indonesia, with more than 31
Calcium Participates in Secretion of Porphyrin from Shell Gland Epithelial Cells of Japanese Quail (Coturnix coturnix japonica)  [PDF]
Osamu Kai
Open Journal of Animal Sciences (OJAS) , 2019, DOI: 10.4236/ojas.2019.91013
Abstract:

To investigate factors involved in the secretion of protoporphyrin IX (PpIX), a superficial eggshell pigment, from shell gland epithelial cells of Japanese quail, we cultured cells in Ham’s F12 medium with calcium chloride and quail plasma. The addition of hormones (prostaglandin F2α, progesterone, estradiol-17β) to the medium did not change the PpIX concentration in the culture supernatant, but changing the calcium chloride (CaCl2) concentration did: a lower concentration of CaCl2 led to a higher PpIX concentration; 0 mM CaCl2 enhanced the secretion of PpIX from epithelial cells prepared at 5 or 7 mM CaCl2. The result suggests that a drop in concentration of CaCl2 mimics the end of shell calcification and stimulates rapid secretion of PpIX in vivo. Bovine serum albumin was almost as effective

Non-motor signs and symptoms in Parkinson’s disease  [PDF]
Kazuo Abe
Health (Health) , 2012, DOI: 10.4236/health.2012.431171
Abstract: Motor symptoms are cardinal clinical features of Parkinson’s disease (PD). Progress in drug therapy and rehabilitation has been presenting beneficial effect for motor symptoms. However, non-motor symptoms and signs in PD have been accumulated growing attentions and its amelioration may also give beneficial effect for PD patients’ and their care givers’ quality of life. In this mini-review, I overviewed non-motor symptoms and signs in PD.
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