Masanori Nakamura

Publication List Details

Period

1995 - 2008

Number

26

Co-Authors

A Numerical Model of Hercules A by Magnetic Tower: Jet/Lobe Transition, Wiggling, and the Magnetic Field Distribution (2008)

Nakamura, Masanori, Tregillis, Ian L., Li, Hui, Li, Shengtai

We apply magnetohydrodynamic (MHD) modeling to the radio galaxy Hercules A for investigating the jet-driven shock, jet/lobe transition, wiggling, and magnetic field distribution associated with this...

Multifrequency Polarimetry of the Nrao 140 Jet: Possible Detection of a Helical Magnetic Field and Constraints on its Pitch Angle (2008)

Asada, Keiichi, Inoue, Makoto, Nakamura, Masanori, Kameno, Seiji, Nagai, Hiroshi

We present results from multifrequency polarimetry of NRAO 140 using the Very Long Baseline Array. These observations allow us to reveal the distributions of both the polarization position angle and...

IL-12 and IL-18 Induction and Subsequent NKT Activation Effects of the Japanese Botanical Medicine Juzentaihoto (2008)

Kazuhiko Fujiki, Masanori Nakamura, Takako Matsuda, Mariko Isogai, Minako Ikeda, Yutaka Yamamoto, ...

In this study, we first measured some cytokine concentrations in the serum of patients treated with Juzentaihoto (JTT). Of the cytokines measured interleukin (IL) -18 was the most prominently...

Fine structure and mineral components of primary calculi in some human prostates (2008)

Kodaka, Tetsuo, Hirayama, Akihiko, Sano, Tsuneyoshi, Debari, Kazuhiro, Mayahara, Mitsuori, Nakamura, Masanori

The fine structure of prostatic calculi has not been elucidated yet, although the chemical components were reported in detail. We studied the primary or endogenous calculi removed from eight human...

X-ray Observables of Magnetically Dominated Cavities in Clusters (2007)

Diehl, Steven, Nakamura, Masanori, Li, Hui, Rafferty, David

We present results from magneto-hydrodynamic jet simulations in the magnetically dominated regime and find that they inflate cavities into the intracluster medium. Mock Chandra X-ray observations of...

Numerical Modeling of AGN Jets: Formation of Magnetically Dominated Lobes and Stability Properties of Current-carrying Jets (2007)

Nakamura, Masanori, Li, Hui, Diehl, Steven, Li, Shengtai

We argue the behavior of Poynting flux-dominated outflows from AGN in the galactic cluster systems by performing three-dimensional MHD simulations within the framework of the "magnetic tower" model....

Stability Properties of Magnetic Tower Jets (2006)

Nakamura, Masanori, Li, Hui, Li, Shengtai

Stability properties of ``magnetic tower'' jets propagating in the gravitationally stratified background have been examined by performing three-dimensional magnetohydrodynamic simulations. The...

Structure of Magnetic Tower Jets in Stratified Atmospheres (2006)

Nakamura, Masanori, Li, Hui, Li, Shengtai

Based on a new approach on modeling the magnetically dominated outflows from AGNs (Li et al. 2006), we study the propagation of magnetic tower jets in gravitationally stratified atmospheres (such as...

MHD supernova jets: the missing link (2006)

Meier, David L., Nakamura, Masanori

We review recent progress in the theory of jet production, with particular emphasis on the possibility of 1) powerful jets being produced in the first few seconds after collapse of a supernova core...

Poynting Flux Dominated Jets in Decreasing Density Atmospheres. I. The Non-relativistic Current-driven Kink Instability and the Formation of "Wiggled" Structures (2004)

Nakamura, Masanori, Meier, David L.

Non-relativistic three-dimensional magnetohydrodynamical (MHD) simulations of Poynting flux dominated (PFD) jets are presented. Our study focuses on the propagation of strongly magnetized hypersonic,...

MHD Supernova Jets: The Missing Link (2003)

Meier, David L., Nakamura, Masanori

We review recent progress in the theory of jet production, with particular emphasis on the possibility of 1) powerful jets being produced in the first few seconds after collapse of a supernova core...

3-D Simulations of MHD Jets - The Stability Problem (2003)

Nakamura, Masanori, Meier, David L.

Non-relativistic three-dimensional magnetohydrodynamic simulations of Poynting-flux-dominated (PFD) jets are presented. Our study focuses on the propagation of strongly magnetized hypersonic but...

Reperfusion induces myocardial apoptotic cell death (2000)

Zhao, Zhi-Qing, Nakamura, Masanori, Wang, Ning-Ping, Wilcox, Josiah N., Shearer, Steven, Ronson, Russell S., ...

Objective: The purpose of the present study was to investigate whether apoptosis is triggered during ischemia (I) and reperfusion (R) and whether I/R-induced apoptosis is correlated with changes in...

Preconditioning decreases Bax expression, PMN accumulation and apoptosis in reperfused rat heart (2000)

Nakamura, Masanori, Wang, Ning-Ping, Zhao, Zhi-Qing, Wilcox, Josiah N, Thourani, Vinod, Guyton, Robert A, ...

Objective: Recent studies suggest that ischemic preconditioning (IPC) inhibits myocardial apoptosis after ischemia and reperfusion. This study tested the hypothesis that IPC reduces...

The cardiovascular effects and implications of peroxynitrite (1999)

Ronson, Russell S, Nakamura, Masanori, Vinten-Johansen, Jakob

Nitric oxide is an endogenous autacoid produced primarily by the vascular endothelium. Under basal conditions, nitric oxide undergoes a rapid biradical reaction with superoxide anions to form...

Multinucleated giant cells recruited by implantation of octacalcium phosphate (OCP) in rat bone marrow share ultrastructural characteristics with osteoclasts (1997)

Kamakura, Shinji, Sasano, Yasuyuki, Homma-Ohki, Hidetaka, Nakamura, Masanori, Suzuki, Osamu, Kagayama, Manabu, ...

The ultrastructural characteristics of multinucleated giant cells (MNGCs) on octacalcium phosphate (OCP) and hydroxyapatite (HA) were investigated in comparison with those of osteoclasts, when the...

Interleukin-1β induces death in chondrocyte-like ATDC5 cells through mitochondrial dysfunction and energy depletion in a reactive nitrogen and oxygen species-dependent manner

Yasuhara, Rika, Miyamoto, Yoichi, Akaike, Takaaki, Akuta, Teruo, Nakamura, Masanori, Takami, Masamichi, ...

IL-1 (interleukin-1) acts as a key mediator of the degeneration of articular cartilage in RA (rheumatoid arthritis) and OA (osteoarthritis), where chondrocyte death is observed. It is still...

Interleukin-1β induces death in chondrocyte-like ATDC5 cells through mitochondrial dysfunction and energy depletion in a reactive nitrogen and oxygen species-dependent manner

Yasuhara, Rika, Miyamoto, Yoichi, Akaike, Takaaki, Akuta, Teruo, Nakamura, Masanori, Takami, Masamichi, ...

IL-1 (interleukin-1) acts as a key mediator of the degeneration of articular cartilage in RA (rheumatoid arthritis) and OA (osteoarthritis), where chondrocyte death is observed. It is still...

Inhibition of inflammatory actions of aminobisphosphonates by dichloromethylene bisphosphonate, a non-aminobisphosphonate

Endo, Yasuo, Shibazaki, Masahiko, Yamaguchi, Kouji, Nakamura, Masanori, Kosugi, Hiroshi

When injected intraperitoneally into mice in doses larger than those used clinically, all the amino derivatives of bisphosphonates (aminoBPs) tested induce a variety of inflammatory reactions such as...

Accumulation of platelets in the lung and liver and their degranulation following antigen-challenge in sensitized mice

Yoshida, Atsushi, Ohba, Mami, Wu, Xia, Sasano, Takashi, Nakamura, Masanori, Endo, Yasuo

Mast cells and basophils are believed to trigger allergic reactions and anaphylaxis. They rapidly release histamine (H), a typical mediator of inflammation, in response to antigens. In the mouse,...

IL-12 and IL-18 Induction and Subsequent NKT Activation Effects of the Japanese Botanical Medicine Juzentaihoto

Fujiki, Kazuhiko, Nakamura, Masanori, Matsuda, Takako, Isogai, Mariko, Ikeda, Minako, Yamamoto, Yutaka, ...

In this study, we first measured some cytokine concentrations in the serum of patients treated with Juzentaihoto (JTT). Of the cytokines measured interleukin (IL) -18 was the most prominently...