RECORDER WITH AUTOMATIC SCALING FUNCTION

Takehiko Tomita,Masahiro Tohara 제어로봇시스템학회 1988 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.2

A STUDY ON PULVERIZING CHARACTERISTIC OF VIBRATION MILL USING RING MEDIA FOR HIGH CAPACITY PULVERIZATION OF LIGNOCELLULOSE BIOMASS

Takehiko TAKAHASHI 한국신재생에너지학회 2017 AFORE Vol.2017 No.11

THE APPLICATION OF SHARIA AND THE EVOLUTION OF THE NATIVE COURT SYSTEM IN COLONIAL NORTHERN NIGERIA (1900-1960)

Takehiko Ochiai 한국외국어대학교 아프리카연구소 2020 Asian Journal of African Studies Vol.- No.49

The aim of this article is to examine the history of the application of Sharia (Islamic Law) in colonial Northern Nigeria, focusing on the evolution of the native court system. In the article, we discuss how Sharia was practised in Northern Nigeria during the colonial period by dividing it into three phases. During the First Phase (1900-1932) Sharia was preserved, and native courts enjoyed a degree of autonomy under colonial administrators’ flexible, self-restrained supervision (the ‘preservation period’). However, in the Second Phase (1933-1953), native courts like Alkali and Emir Courts were tied to English ones through the appeals system. A ‘hierarchy among courts’ (in which the former were defined as inferior and the latter as superior), as well as a ‘normative hierarchy’ (in which Islamic criminal law was restricted by the codified Criminal Code), were established, reinforcing Sharia’s subjugation to the modern judiciary (the ‘period of subjugation’). In the Third Phase (1954-1960), the attempt by the Nigerian Muslim-led Government of the Northern Region to reach a political compromise did not restore Sharia (which had been subjugated by the colonisers), but rather created a situation in which Sharia’s application was restricted to personal law (the ‘period of compromise’).

Pentecostal-Charismatic Christianity and the State in Africa

Takehiko Ochiai 한국외국어대학교 아프리카연구소 2022 Asian Journal of African Studies Vol.- No.52

The aim of this article is to examine the historical evolution of Pentecostal-Charismatic Christianity and its socio-political effects in the area of an African state characterised by personal rule. The Pentecostal-Charismatic movement or Pentecostalism is the most dynamic and globally far-reaching movement within contemporary Christianity. The Pentecostal movement or classical Pentecostalism began as a Christian revival campaign that was active in the late nineteenth and early twentieth centuries and centred on the western coast of the United States. It emphasised direct personal experience of God through baptism with the Holy Spirit. The charismatic movement, also known as neo-Pentecostalism, emerged primarily in the 1960s in North America and Europe. And the Third Wave movement of the Holy Spirit, sometimes called the neo-charismatic movement, arose in the 1980s among American evangelicals. It can be said that the three movements—the Pentecostal, charismatic and Third Wave movements—belong to the same broad thrust of Pentecostal-Charismatic Christianity. The article focuses on the healing crusades organised by Christ for All Nations (CfaN), which is an international evangelistic ministry founded in the 1970s by Reinhard Bonnke, a German missionary aligned with the Pentecostal-Charismatic Christianity, and discusses the interplay between the crusades and African states. To reiterate the findings of this analysis, the Pentecostal-Charismatic movement has a dichotomous effect on African politics: it can help stabilise African states by depoliticising African consciousness and forging close mutual arrangements with national leaders; on the flipside, it can destabilise the states by inflaming religious tensions.

Characteristics of Breakdown Voltage at a Narrow Gap in a Non-thermal Plasma Flow

Takehiko SATO,Hideya Nishiyama,Makoto Kambe 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.III

Characteristics of breakdown voltage in a non-thermal plasma flow at atmospheric pressure were investigated %%@ experimentally. Breakdown voltages for different gap lengths of parallel plate electrodes were measured with %%@ respect to applied voltage rising rate, applied waveform, applied wave frequency, gas flow rate and kind of gas. %%@ The correlation between $pd$, which is the product of the pressure and the gap length, and breakdown voltage %%@ corresponded to Penning's experimental data of the applied voltage rising rates from 0.1 kV/s to 10 kV/s. However, %%@ the correlation was not in accordance with Penning's data when rising rates were greater than 100 kV/s. The %%@ breakdown voltages showed a minimum value when gas flow rates were 2 - 4 Sl/min for both argon and nitrogen gases. %%@ On the other hand, the correlation between breakdown voltage and $pd$ corresponded to the experimental data %%@ reported by Penning, Kind and Karner concerning the cases of sawtooth wave, sinusoidal wave and square wave with %%@ different wave frequencies of 100 Hz, 1 kHz and 10 kHz. Discharge current mode is classified into two modes and it %%@ was influenced by gas flow rate.

Thresholds of Genotoxic and Non-Genotoxic Carcinogens

Takehiko Nohmi 한국독성학회 2018 Toxicological Research Vol.34 No.4

Exposure to chemical agents is an inevitable consequence of modern society; some of these agents are hazardous to human health. The effects of chemical carcinogens are of great concern in many countries, and international organizations, such as the World Health Organization, have established guidelines for the regulation of these chemicals. Carcinogens are currently categorized into two classes, genotoxic and non-genotoxic carcinogens, which are subject to different regulatory policies. Genotoxic carcinogens are chemicals that exert carcinogenicity via the induction of mutations. Owing to their DNA interaction properties, there is thought to be no safe exposure threshold or dose. Genotoxic carcinogens are regulated under the assumption that they pose a cancer risk for humans, even at very low doses. In contrast, non-genotoxic carcinogens, which induce cancer through mechanisms other than mutations, such as hormonal effects, cytotoxicity, cell proliferation, or epigenetic changes, are thought to have a safe exposure threshold or dose; thus, their use in society is permitted unless the exposure or intake level would exceed the threshold. Genotoxicity assays are an important method to distinguish the two classes of carcinogens. However, some carcinogens have negative results in in vitro bacterial mutation assays, but yield positive results in the in vivo transgenic rodent gene mutation assay. Non-DNA damage, such as spindle poison or topoisomerase inhibition, often leads to positive results in cytogenetic genotoxicity assays such as the chromosome aberration assay or the micronucleus assay. Therefore, mechanistic considerations of tumor induction, based on the results of the genotoxicity assays, are necessary to distinguish genotoxic and non-genotoxic carcinogens. In this review, the concept of threshold of toxicological concern is introduced and the potential risk from multiple exposures to low doses of genotoxic carcinogens is also discussed.

Extended-Nano Fluidics and Optical Absorption Detection by TLM for Bioanalysis

Takehiko KITAMORI 한국생물공학회 2012 한국생물공학회 학술대회 Vol.2012 No.4

Study on Spray Characteristics of Pressure Swirl Atomizer with Swirling Air Flow under the Subatmospheric Pressure

( Takehiko Seo ),( Naoki Hiruta ),( Masato Mikami ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-

If jet engines of the airplane stop at high altitude, it is necessary to reignite and restart engines rapidly and surely in order to prevent the plane crash. The inside of combustion chamber will be low pressure and low temperature condition in this situation. It is difficult to reignite in this condition. The ignition performance is effected by the spray characteristics of fuel. To improve the reignition performance of jet engines and safety of airplanes, it is important to investigate the spray characteristics at low pressure. In this study, the spray characteristics at the subatmospheric pressure was investigated. The water atomization was conducted by pressure swirling atomizer that is installed in pressure chamber. The inside pressure of pressure chamber was set to 0.025 MPa simulated the pressure at high altitude condition (about 10000 m) by vacuum pump. The difference of injection pressure was 1.00 MPa. Additionally, swirler was installed around the pressure-swirl injector and provided swirling air flow on the spray by continuous running of vacuum pump. The spray characteristics were measured using PDPA. The results showed that the maximum Sauter mean diameter decreased and the droplet distribution changed from bimodal shape to monophasic shape. The reason was that swirling air flow made the entrainment weak and small droplets stayed at the main spray area.

Tin Displacement Plating Using Alginate Gel Particle

Takehiko Kawano,Isao Shitanda,Masayuki Itagaki,Kunihiro Watanabe 한국표면공학회 2008 한국표면공학회 학술발표회 초록집 Vol.2008 No.-

A COSMOLOGICAL PAH SURVEY WITH SPICA

Takehiko Wada,Eiichi Egami,Naofumi Fujishiro,Tomotsugu Goto,Masatoshi Imanishi,Hanae Inami,Daisuke Ishihara,Hidehiro Kaneda,Kotaro Kohno,Yusei Koyama,Hideo Matsuhara,Shuji Matsuura,Tohru Nagao,Youichi 한국천문학회 2017 天文學論叢 Vol.32 No.1

We propose a cosmological survey to probe star formation and nuclear activityin galaxies at redshifts of z = 2 - 4 by polycyclic aromatic hydrocarbon(PAH) features usingthe SPICA mid-infrared instrument (SMI)with a spectral resolution of R = 20. We will cover a wavelength range of 20-36 μmthat corresponds to z = 2 - 4 for the PAH features(11.3, 7.7, and 6.2 μm). The sensitivity will be $1\times10^{-19}$ W/m$^2$ (5 $\sigma$)in case of a referencesurvey that covers 4 arcmin$^2$ field in a one-hour observation. It corresponds to L$_{\rm IR}$=$2\times10^{11}$ $L_\odot$ at z=3and will give us more than 10000 galaxies in a 450 hour survey.