Yutaka Hirai's Books

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

By: Yutaka Hirai

Write a review Read reviews Take a Quiz Solve Book Puzzle

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

By: Yutaka Hirai

This book addresses the mechanism of enrichment of heavy elements in galaxies, a long standing problem in astronomy. It mainly focuses on explaining the origin of heavy elements by performing state-of-the-art, high-resolution hydrodynamic simulations of dwarf galaxies. In this book, the author successfully develops a model of galactic chemodynamical evolution by means of which the neutron star mergers can be used to explain the observed abundance pattern of the heavy elements synthesized by the rapid neutron capture process, such as europium, gold, and uranium in the Local Group dwarf galaxies. The book argues that heavy elements are significant indicators of the evolutionary history of the early galaxies, and presents theoretical findings that open new avenues to understanding the formation and evolution of galaxies based on the abundance of heavy elements in metal-poor stars.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

145

Publisher

Springer

Published Date

ISBN 10

9811378843

ISBN 13

9789811378843

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

By: Yutaka Hirai

Write a review Read reviews Take a Quiz Solve Book Puzzle

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

By: Yutaka Hirai

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

145

Publisher

Springer

Published Date

ISBN 10

9811378843

ISBN 13

9789811378843

Fukushima Accident

10 Years After

By: Pavel P. Povinec,Katsumi Hirose,Michio Aoyama,Yutaka Tateda

Write a review Read reviews Take a Quiz Solve Book Puzzle

Fukushima Accident

10 Years After

By: Pavel P. Povinec,Katsumi Hirose,Michio Aoyama,Yutaka Tateda

Fukushima Accident: 10 Years After evaluates the post-Fukushima accident situation with up-to-date information, emphasizing radionuclide impacts on the terrestrial and marine environments, and comparing them to the pre-Fukushima accident levels of radionuclides in the environment. This is based on scientific results, as well as knowledge gathered from literature to provide current information on the present status, summarize 10 years of data on the Fukushima accident, and describe the present situation in the local, regional, and global time and space scales. It provides data on radioactivity released into the atmosphere and the ocean, the distribution of radionuclides in the world atmosphere and oceans, and their impact on the total environment, including assessments of radiation doses in Japanese and world populations from consumption of terrestrial food and seafood. It goes on to describe future aspects of the radioactive contamination of these environments and the health implications. This book informs environmental scientists, academics, and researchers in environmental science and nuclear energy as well as postgraduate students in the field of environmental science, radioactivity, and nuclear energy, on the present situation of radioactive contamination of Japan and in the world. - Covers the Fukushima radioactivity impact on humans and the environment from the accident to the present - Provides full information on radiation doses to Japanese citizens and biota, as well as to the world population, 10 years after the Fukushima accident - Details transport of radionuclides in terrestrial and ocean environments, describing how to apply this information to ocean global circulation models and quantify radionuclide contamination of coastal regions - Assesses future trends in radioactive contamination of the Fukushima site

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

575

Publisher

Elsevier

Published Date

ISBN 10

0128244976

ISBN 13

9780128244975

Excitonic Processes in Solids

By: Masayasu Ueta,Hiroshi Kanzaki,Koichi Kobayashi,Yutaka Toyozawa,Eiichi Hanamura

Write a review Read reviews Take a Quiz Solve Book Puzzle

Excitonic Processes in Solids

By: Masayasu Ueta,Hiroshi Kanzaki,Koichi Kobayashi,Yutaka Toyozawa,Eiichi Hanamura

An exciton is an electronic excitation wave consisting of an electron-hole pair which propagates in a nonmetallic solid. Since the pioneering research of Fren kel, Wannier and the Pohl group in the 1930s, a large number of experimental and theoretical studies have been made. Due to these investigations the exciton is now a well-established concept and the electronic structure has been clarified in great detail. The next subjects for investigation are, naturally, dynamical processes of excitons such as excitation, relaxation, annihilation and molecule formation and, in fact, many interesting phenomena have been disclosed by recent works. These excitonic processes have been recognized to be quite important in solid-state physics because they involve a number of basic interactions between excitons and other elementary excitations. It is the aim of this quasi monograph to describe these excitonic processes from both theoretical and experimental points of view. we take a few To discuss and illustrate the excitonic processes in solids, important and well-investigated insulating crystals as playgrounds for excitons on which they play in a manner characteristic of each material. The selection of the materials is made in such a way that they possess some unique properties of excitonic processes and are adequate to cover important interactions in which excitons are involved. In each material, excitonic processes are described in detail from the experimental side in order to show the whole story of excitons in a particular material.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

544

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642826024

ISBN 13

9783642826023

Neighborhood Associations and Local Governance in Japan

By: Robert J. Pekkanen,Yutaka Tsujinaka,Hidehiro Yamamoto

Write a review Read reviews Take a Quiz Solve Book Puzzle

Neighborhood Associations and Local Governance in Japan

By: Robert J. Pekkanen,Yutaka Tsujinaka,Hidehiro Yamamoto

Although local neighborhood associations are found in many countries, Japan’s are distinguished by their ubiquity, scope of activities, and very high participation rates, making them important for the study of society and politics. Most Japanese belong to one local neighborhood association or another, making them Japan’s most numerous civil society organization, and one that powerfully shapes governance outcomes in the country. And, they also often blur the state-society boundary, making them theoretically intriguing. Neighborhood Associations and Local Governance in Japan draws on a unique and novel body of empirical data derived from the first national survey of neighborhood associations carried out in 2007 and provides a multifaceted empirical portrait of Japan’s neighborhood associations. It examines how local associational structures affect the quality of local governance, and thus the quality of life for Japan’s citizens and residents, and illuminates the way in which these ambiguous associations can help us refine civil society theory and show how they contribute to governance. As well as outlining the key features of neighbourhood associations, the book goes on to examine in detail the way in which neighbourhood associations contribute to governance, in terms of social capital, networks with other community organizations, social service provision, cooperation with local governments and political participation. This book will be welcomed by students and scholars of Japanese politics, Japanese society, anthropology, urban studies as well as those interested in social capital and civil society.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

280

Publisher

Routledge

Published Date

ISBN 10

1317754433

ISBN 13

9781317754435

Optical Processes in Solids

By: Yutaka Toyozawa

Write a review Read reviews Take a Quiz Solve Book Puzzle

Optical Processes in Solids

By: Yutaka Toyozawa

A unifying element that links the apparently diverse phenomena observed in optical processes is the dielectric dispersion of matter. It describes the response of matter to incoming electromagnetic waves and charged particles, and thus predicts their behavior in the self-induced field of matter, known as polariton and polaron effects. The energies of phonon, exciton and plasmon, quanta of collective motions of charged particles constituting the matter, are also governed by dielectric dispersion. Since the latter is a functional of the former, one can derive useful relations for their self-consistency. Nonlinear response to laser light inclusive of multiphoton processes, and excitation of atomic inner shells by synchrotron radiation, are also described. Within the configuration coordinate model, photo-induced lattice relaxation and chemical reaction are described equally to both ground and relaxed excited states, to provide a novel and global perspective on structural phase transitions and the nature of interatomic bonds. This book was first published in 2003.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

432

Publisher

Cambridge University Press

Published Date

ISBN 10

0521554470

ISBN 13

9780521554473

Book's by Yutaka Hirai

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

Fukushima Accident

Fukushima Accident

Excitonic Processes in Solids

Excitonic Processes in Solids

Neighborhood Associations and Local Governance in Japan

Neighborhood Associations and Local Governance in Japan

Optical Processes in Solids

Optical Processes in Solids

Username

Password

Username

Password

Password again

Birthday

Email