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Wyszukujesz frazę "Nakamura, T." wg kryterium: Wszystkie pola


Tytuł:
Precise measurement of complex permittivity of materials for telecommunications devices
Autorzy:
Nakamura, T.
Nikawa, Y.
Powiązania:
https://bibliotekanauki.pl/articles/309568.pdf
Data publikacji:
2001
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
perturbation method
TLM method
cavity resonator
simulation model
temperature dependence of complex permittivity
microwave measurement
Opis:
In order to obtain precise complex permittivity of the dielectric materials obtained from the perturbation method a correction curve is made using the electromagnetic field simulator which applies transmission line modeling (TLM) method. In this experiment, generated microwave power with the frequency of 2.45 GHz is applied to heat dielectric material while measuring temperature dependence of complex permittivity of dielectric material. To obtain these objectives cavity resonator with cooling system is designed. It is found from the result that the accurate temperature dependence of complex permittivity of the materials can be obtained by the method presented here.
Źródło:
Journal of Telecommunications and Information Technology; 2001, 3; 66-71
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of robot utterances using onomatopoeia on collaborative learning
Autorzy:
Jimenez, F.
Kanoh, M.
Yoshikawa, T.
Furuhashi, T.
Nakamura, T.
Powiązania:
https://bibliotekanauki.pl/articles/91733.pdf
Data publikacji:
2014
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
robot
onomatopoeia
collaborative learning
Opis:
We investigated the effect of robot’s utterances using onomatopoeia in collaborative learning. The robot was designed to provide encouragement using onomatopoeia when students are given problems to be solved issued by a learning system. Eight college students used a mathematics learning system with a robot for three weeks and then took exams. The results indicated that the robot using utterances with onomatopoeia could comfort learners more than the robot without onomatopoeia. It suggests that the robot that praises or comforts using onomatopoeia helps learners maintain their motivation in collaborative learning.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2014, 4, 2; 125-131
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Micro-Raman Study of $BiFeO_3$ Thin Films Fabricated by Chemical Solution Deposition Using Different Bi/Fe Ratio Precursors
Autorzy:
Nakamura, T.
Fukumura, H.
Hasuike, N.
Harima, H.
Nakamura, Y.
Kisoda, K.
Nakashima, S.
Okuyama, M.
Powiązania:
https://bibliotekanauki.pl/articles/1807821.pdf
Data publikacji:
2009-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.30.Hv
63.20.D-
78.30.-j
Opis:
$BiFeO_3$ thin films were grown by chemical solution deposition using precursors with different elemental ratios, Bi/Fe = 1.1/1.0, 1.0/1.0 and 1.0/1.1. All the samples consisted of two easily distinguishable components of crystalline and amorphous phases. We have found that the electric properties of $BiFeO_3$ thin films are closely connected to the crystallinity of the films.
Źródło:
Acta Physica Polonica A; 2009, 116, 1; 72-74
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and Characterization of Mn-Doped $BiFeO_3$ Nanoparticles
Autorzy:
Fukumura, H.
Matsui, S.
Tonari, N.
Nakamura, T.
Hasuike, N.
Nishio, K.
Isshiki, T.
Harima, H.
Kisoda, K
Powiązania:
https://bibliotekanauki.pl/articles/1807808.pdf
Data publikacji:
2009-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.30.Hv
63.20.D-
78.30.-j
Opis:
$BiFeO_3$ is a multiferroic material showing antiferromagnetic ordering and ferroelectric behavior simultaneously. Here, Mn-doped $BiFeO_3$ nanoparticles were synthesized up to 10% of Mn composition by a sol-gel process. The samples showed high crystallinity with no secondary phase up to 2% of Mn doping. A phonon peak at 1250 $cm^{-1}$ in undoped $BiFeO_3$ showed anomalous intensity enhancement in the magnetically ordered phase below $T_N$ = 643 K due to a spin-phonon coupling. This behavior was less pronounced in the Mn-doped samples, suggesting a suppression of magnetic ordering between $Fe^{3+}$ spins by Mn doping.
Źródło:
Acta Physica Polonica A; 2009, 116, 1; 47-50
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Involvement of cyclooxygenase (COX)-2 products in acceleration of ulcer healing by gastrin and hepatocyte growth factor
Autorzy:
Brzozowski, T.
Konturek, P.C.
Konturek, S.J.
Pajdo, R.
Schuppan, D.
Drozdowicz, D.
Ptak, A.
Pawlik, M.
Nakamura, T.
Hahn, E.G.
Powiązania:
https://bibliotekanauki.pl/articles/69750.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
gastric ulcer
gastric blood flow
prostaglandin
ulcer healing
hepatocyte
cyclooxygenase-2
cyclooxygenase-1
growth factor
gastrin
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 4,1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural characterization of room-temperature synthesized fullerene nanowhiskers
Autorzy:
Miyazawa, K.
Minato, J.
Mashino, T.
Nakamura, S.
Fujino, M.
Suga, T.
Powiązania:
https://bibliotekanauki.pl/articles/146219.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
carbon
C60
fullerene
nanowhisker
structure
TEM
Opis:
Structural properties of various kinds of room-temperature synthesized C60 fullerene nanowhiskers were investigated by TEM and XRD. The C60 nanowhiskers prepared by use of toluene lost their initial solvated hexagonal structure faster than the C60 nanowhiskers prepared by use of m-xylene. The hexagonal structure of C60 nanowhiskers prepared by use of toluene was stabilized by adding C60[C(COOC2H5)2]. These results suggest that large solute molecules in the C60 nanowhisker matrix stabilize their initially solvated hexagonal structure. Furthermore, the addition of a sufficient amount of C60(2-methoxycarbonyl-N-methylpyrrolidine) into the m-xylene solution of C60 produced the C60 nanowhiskers indicating the formation of ordered solid solution of C60 and C60(2-methoxycarbonyl-N-methylpyrrolidine).
Źródło:
Nukleonika; 2006, 51,suppl.1; 41-48
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a magnetic field monitoring system for the JAERI AVF cyclotron
Autorzy:
Okumura, S.
Arakawa, K.
Fukuda, M.
Nakamura, Y.
Yokota, W.
Ishimoto, T.
Kurashima, S.
Ishibori, I.
Nara, T.
Agematsu, T.
Nakajima, T.
Powiązania:
https://bibliotekanauki.pl/articles/148733.pdf
Data publikacji:
2003
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
compensation coil
cyclotron
magnetic field
Opis:
We have developed a probe of a nuclear magnetic resonance (NMR) magnetometer for measurement of a fluctuation of an AVF cyclotron field. The stability of the magnetic field of the JAERI AVF cyclotron, measured with the NMR probe, was within 1 × 10-5. A field-measurement accuracy of the order of 1 × 10-6 was achieved using a set of field-compensation coils and optimizing the probe position to obtain enough homogeneity of the magnetic field around the probe for measuring the cyclotron field with a high gradient. To eliminate a major bottleneck in the field measurement inside the cyclotron, the probe was specially produced with the cable shielding against RF noises and proper materials applied.
Źródło:
Nukleonika; 2003, 48,suppl.2; 35-37
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pressure Effect on Yb-Based Strongly Correlated Electron Systems
Autorzy:
Mito, T.
Otani, M.
Nakamura, M.
Koyama, T.
Wada, S.
Kotegawa, H.
Kobayashi, T.
Idzikowski, B.
Reiffers, M.
Sarrao, J.
Powiązania:
https://bibliotekanauki.pl/articles/1810284.pdf
Data publikacji:
2009-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.27.+a
75.30.Kz
75.30.Mb
76.60.-k
Opis:
We studied pressure effects on $YbCu_5$ and $YbInCu_4$, good examples of the Yb-based compounds to investigate the nonmagnetic-magnetic transition in Yb-based strongly correlated electron systems. With increasing pressure, the low-temperature Fermi liquid state of $YbCu_5$ is gradually suppressed, suggesting the second-order like nonmagnetic-magnetic transition around the pressure of 5-6 GPa. On the other hand, in $YbInCu_4$ which has a pressure-induced magnetic ordered ground state above $P_C$=2.45 GPa, both high-temperature paramagnetic and low-temperature intermediate valence phases are insensitive to pressure. Our results confirm the first-order nature of the transition between the intermediate valence and magnetic ordered phases with pressure.
Źródło:
Acta Physica Polonica A; 2009, 115, 1; 47-52
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of substrate temperature on the crystal properties of LiMn2O4 films prepared by RF magnetron sputtering
Autorzy:
Isai, M.
Nakamura, K.
Hosokawa, T.
Izumichi, T.
Sekikawa, S.
Powiązania:
https://bibliotekanauki.pl/articles/384289.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
LiMn2O4 thin film
RF magnetron sputtering
Li secondary batteries
Opis:
The LiMn2O4 films for Li secondary batteries have been prepared by a RF magnetron sputtering method. The LiMn2O4 powder was used as a target material. The deposition rate, XRD, and surface morphology were investigated as a function of substrate temperature (Tsub). It was found that the deposition rate had a peak at around the of 200 °C. This research was also designed for preventing the target material being oxidized during the reactive sputtering process. A quartz tube was inserted between shutter and target. It seems that the quartz tube is effective to prevent oxidation of target material.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 65-68
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Body weight of high and low aggression mice under various population densities
Autorzy:
Oikawa, T
Kawamoto, Y.
Nakamura, S.
Morimasa, T.
Sato, K.
Powiązania:
https://bibliotekanauki.pl/articles/2043138.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
population density
statistical analysis
mice
aggressive behaviour
sex
animal
growth
mouse
phenotypic mean
genotype
environment interaction
body weight
heterogeneity
aggression
Źródło:
Journal of Applied Genetics; 2000, 41, 1; 35-42
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł

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