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Journal Articles

Development of DynamicMC for PHITS Monte Carlo package

Watabe, Hiroshi*; Sato, Tatsuhiko; Yu, K. N.*; Zivkovic, M.*; Krstic, D.*; Nikezic, D.*; Kim, K. M.*; Yamaya, Taiga*; Kawachi, Naoki*; Tanaka, Hiroki*; et al.

Radiation Protection Dosimetry, 13 Pages, 2023/00

https://doi.org/10.1093/rpd/ncad278
 Times Cited Count：0 Percentile：0.01(Environmental Sciences)

Previously, we have developed DynamicMC for modelling relative movement of ORNL phantom in a radiation field for MCNP. Using this software, 3-dimensional dose distributions in a phantom irradiated by a certain mono-energetic source can be deduced through its graphical user interface (GUI). In this study, we extended DynamicMC to be used in combination with the PHITS by providing it with a higher flexibility for dynamic movement for a less sophisticated anthropomorphic phantom. We anticipate that the present work and the developed open-source tools will be in the interest of nuclear radiation physics community for research and teaching purposes.

Journal Articles

The Role of ${it Deinococcus radiodurans}$ RecFOR proteins in homologous recombination

Sato, Katsuya; Kikuchi, Masahiro; Ishaque, A. M.*; Oba, Hirofumi*; Yamada, Mitsugu; Tejima, Kohei; Onodera, Takefumi; Narumi, Issei

DNA Repair, 11(4), p.410 - 418, 2012/04

https://doi.org/10.1016/j.dnarep.2012.01.008
 Times Cited Count：24 Percentile：59.51(Genetics & Heredity)

In an effort to gain insights into the role of ${it D. radiodurans}$ RecFOR proteins in homologous recombination, we generated ${it recF}$, ${it recO}$ and ${it recR}$ disruptant strains and characterized the disruption effects. Disruption of ${it recR}$ resulted in severe reduction of the transformation efficiency. On the other hand, the ${it recF}$ disruptant strain was the most sensitive phenotype to $$gamma$$ rays, UV irradiation and mitomycin C among the three disruptants. In the ${it recF}$ disruptant strain, the intracellular level of the LexA1 protein did not decrease following $$gamma$$ irradiation. These results demonstrate that the RecF protein plays a crucial role in the homologous recombination repair process by facilitating RecA activation. Thus, the RecF and RecR proteins are involved in the RecA activation and the stability of incoming DNA, respectively, during RecA-mediated homologous recombination processes that initiated the ESDSA pathway in ${it D. radiodurans}$.

Journal Articles

Micropolar fluid behavior on MHD heat transfer flow through a porous medium with induced magnetic field by finite difference method

Sultana, M.*; Haque, M. M.*; Alam, M. M.*; Ferdows, M.; Postelnicu, A.*

European Journal of Scientific Research, 53(3), p.477 - 490, 2011/05

http://www.eurojournals.com/EJSR_53_3_14.pdf

A unsteady MHD heat transfer by free convective micropolar fluid flow through an infinite vertical porous medium under the action of strong magnetic field have been studied numerically with induced magnetic field. This investigation is performed for the turbulent boundary layer cooling problem with constant suction velocity. The unconditionally stable implicit finite difference technique is used to solve the non-dimensional momentum, angular momentum, magnetic induction and energy equations. The computed values of fluid velocity, angular velocity, induced magnetic field and temperature distributions as well as the steady-state wall shear stress, wall couple stress, current density and Nusselt number are shown graphically. Finally, the important findings are listed here.

Journal Articles

MHD free convective heat generating unsteady micropolar fluid flow through a porous medium with constant heat and mass fluxes

Haque, M. M.*; Alam, M. M.*; Ferdows, M.; Postelnicu, A.*

European Journal of Scientific Research, 53(3), p.491 - 515, 2011/05

http://www.eurojournals.com/EJSR_53_3_15.pdf

Unsteady MHD heat and mass transfer by free convective micropolar fluid flow over an infinite vertical porous medium under the action of transverse magnetic field with thermal diffusion have been studied numerically in the presence of constant heat source. This investigation is performed for both cooling and heating problem with constant suction velocity when the medium is subjected to constant heat and mass fluxes. A finite difference technique with stability and convergence analysis is used to solve the non-dimensional momentum, angular momentum, energy and concentration equations. The computed values of fluid velocity, angular velocity, temperature and concentration distributions, wall shear stress, wall couple stress, Nusselt number and Sherwood number are shown graphically. Finally, a qualitative comparison with previous work is tabulated.

Journal Articles

Reduction of protein content by RVNRL

Makuuchi, Keizo; Haque, M. H.*; Ikeda, Kenichi*; Yoshii, Fumio; Kume, Tamikazu

Nihon Ratekkusu Arerugi Kenkyukai Kaishi, 4(1), p.7 - 10, 2001/01

no abstracts in English

Journal Articles

Recent progress in RVNRL

Haque, M. H.*; Makuuchi, Keizo; Mitomo, Hiroshi*; Ikeda, K.*; Yoshii, Fumio; Kume, Tamikazu

IAEA-SM-365/17, p.34 - 35, 2000/00

no abstracts in English

Journal Articles

Effect of immersion in tap water on the reduction of tackiness of the film prepared from radiation vulcanized natural rubber latex

Haque, M. E.*; Yoshii, Fumio; Makuuchi, Keizo

Macromolecular Reports, A32(Suppl.3), p.249 - 254, 1995/00

no abstracts in English

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