415 research outputs found
Triaxial superdeformation in Ar
Superdeformed (SD) states in Ar have been studied using the
deformed-basis antisymmetrized molecular dynamics. Low energy states were
calculated by the parity and angular momentum projection (AMP) and the
generator coordinate method (GCM). Basis wave functions were obtained by the
energy variation with a constraint on the quadrupole deformation parameter
, while other quantities such as triaxiality were optimized by
the energy variation. By the GCM calculation, an SD band was obtained just
above the ground state (GS) band. The SD band involves a side
band due to the triaxiality. The calculated electric quadrupole transition
strengths of the SD band reproduce the experimental values appropriately.
Triaxiality is significant for understanding low-lying states.Comment: 11 pages, 4 figure
Analysis of Thermal Demagnetization Behavior of Nd–Fe–B Sintered Magnets Using Magnetic Domain Observation
We used magnetic domain observation to statistically observe the thermal demagnetization behavior of Nd–Fe–B sinteredmagnets at elevated temperatures up to 150 °C. Simultaneous magnetization reversal in a hundred adjacent grains occurred at 90 °C because of the magnetic interaction among the grains beyond grain boundaries in the Dysprosium (Dy)-free low-coercivity magnet. Conversely, simultaneous magnetization reversal in a hundred grains did not occur in the Dy-added high-coercivity magnets, and the demagnetizing ratio steadily increased with temperature. Furthermore, the addition of Dy induced high thermal stability by eliminating the simultaneous thermal demagnetization, which was caused by the magnetic interaction among the grains
Analysis of Thermal Demagnetization Behavior of Nd–Fe–B Sintered Magnets Using Magnetic Domain Observation
We used magnetic domain observation to statistically observe the thermal demagnetization behavior of Nd–Fe–B sinteredmagnets at elevated temperatures up to 150 °C. Simultaneous magnetization reversal in a hundred adjacent grains occurred at 90 °C because of the magnetic interaction among the grains beyond grain boundaries in the Dysprosium (Dy)-free low-coercivity magnet. Conversely, simultaneous magnetization reversal in a hundred grains did not occur in the Dy-added high-coercivity magnets, and the demagnetizing ratio steadily increased with temperature. Furthermore, the addition of Dy induced high thermal stability by eliminating the simultaneous thermal demagnetization, which was caused by the magnetic interaction among the grains
Simultaneous monitoring of independent gene expression patterns in two types of cocultured fibroblasts with different color-emitting luciferases
<p>Abstract</p> <p>Background</p> <p>Luciferase assay systems enable the real-time monitoring of gene expression in living cells. We have developed a dual-color luciferase assay system in which the expression of multiple genes can be tracked simultaneously using green- and red-emitting beetle luciferases. We have applied the system to monitoring independent gene expressions in two types of cocultured fibroblasts in real time.</p> <p>Results</p> <p>Two Rat-1 cell lines were established that stably express either green- or red-emitting luciferases under the control of the <it>mBmal1 </it>promoter, a canonical clock gene. We cocultured these cell lines, and gene expression profiles in both were monitored simultaneously. The circadian rhythms of these cell lines are independent, oscillating following their intrinsic circadian phases, even when cocultured. Furthermore, the independent rhythms were synchronized by medium change as an external stimulus.</p> <p>Conclusion</p> <p>Using this system, we successfully monitored independent gene expression patterns in two lines of cocultured fibroblasts.</p
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