Musashi University

About: Musashi University is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Supply chain & Frugivore. The organization has 125 authors who have published 328 publications receiving 3844 citations.

Long-term studies on wild Japanese macaques in natural habitats at Kinkazan and Yakushima: Preface

Abstract: Field studies on Japanese macaques ( M a c a c a f u s c a t a ) have been conducted in a variety of habitats for more than 40 years. The results of these studies show considerable variation in ecology, social organization, and behavior, not only between habitats, but also between troops within a habitat, and between seasons within a troop. However, a few attempts have been made to identify the cause of intraspecific variation in socioecology, particularly in relation to environmental factors. After the successful habituation of wild macaques by provisioning in the 1950's, most researchers focused their efforts on well habituated troops visiting and staying at artificial feeding sites. Under heavy provisioning, the number of individual in a troop markedly increased as a result of increased birth rate and reduced mortality. Moreover, most of these study troops were living in relative isolation from other troops (on small islands or surrounded by human settlement and cultivated land). These artificial conditions confound attempts to do comparative analyses of ecological constraints influencing social organization of Japanese macaques across different habitats. The Kinkazan and Yakushima Islands are unique study sites where wild Japanese macaques have been habituated without provisioning (Table 1). Long-term studies have been conducted since 1984 at Kinkazan and since 1973 at Yakushima. The broad-leaved deciduous temperate

The Distribution of Wild Yakushima Macaque (Macaca fuscata yakui) Troops around the Coast of Yakushima Island, Japan

Abstract: A series of censuses of wild Yakushima macaques (Macaca fuscata yakui) was carried out in a 127.26km2 area around the coast of Yakushima Island, Japan. The census area was estimated to have 131 troops in total. Monkeys seem to depend on natural broad-leaf forests. Troop density was highest in the western coastal area, where the greatest population of natural vegetation remained undisturbed. In total, 1, 852 monkeys were counted, giving an estimate of 2, 000-3, 850 monkeys inhabiting the census area.

Influence of nonionic surfactant additive on the properties of ionic surfactant solutions

Abstract: The interaction of sodium dodecyl sulfate with a nonionic surfactant (a block copolymer of ethylene oxide and propylene oxide) has been investigated by the measurement of conductivity, surface tension and viscosity. The break point on the equivalent conductivity-square root of concentration\((\lambda - u \bar c)\) diagram which gives the critical micelle concentration (cmc) of sodium dodecyl sulfate became less definite by the addition of the nonionic surfactant, because of the decrease in conductivity below the cmc and increase above the cmc. The steep decrease in reduced viscosity took place in dilute concentration of sodium dodecyl sulfate solutions. In the surface tension vs. concentration diagram, the concentration at which the two linear portions of the curve intersect represents the cmc. The addition of nonionic surfactant decreases this crossed point of sodium dodecyl sulfate and finally obscures the crossed point. These reults are interpreted in terms of an interaction between sodium dodecyl sulfate and nonionic surfactant.

From international sports to international competition: Longitudinal study of the Beijing Olympic Games

Abstract: To investigate whether and how the Beijing Olympic Games influenced the Chinese competitiveness towards foreigners, we conducted a three-wave longitudinal study and found that participants' competitiveness towards foreigners from five comparison target nations, particularly towards Japanese, South Koreans and Kenyans, was higher during the Games than before and/or after. We further found that nationalism predicted the competitiveness toward Japanese and South Koreans, but did not predict the competitiveness toward Americans, Russians and Kenyans. Additionally, we found that patriotism played little role in the effects of the Games on competitiveness towards foreigners. We herein discuss the relationship between national comparisons, nationalism and national conflict.