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Masahiro, Murakami 한국자원리싸이클링학회 1997 資源 리싸이클링 Vol.6 No.2
It presents the amounts of used plastics praduccd in recent years in comparison with the total municipal waste sewage produced in lapan. 'Ex needs of appropriate policies and guidelines to handle various used plastic mzterials are presened and haw such policies and guidelines are currently being mapped out in Japan is also described. 일본 전국의 도시쓰레기 배출량은 약 5,020만톤/년(1992년)으로 약 77%가 소각처리되고 최종잔사는 매립처분되고 있으나 최종 처분장의 사용연수가 약 7년으로 도시쓰레기 처분량의 감량이 시급히 요구되고 있다. 이러한 도시쓰레기 중 가연성인 종이, 플라스틱 등이 약 30%를 차지하고 있으며 이들은 연료로 이용될 수 있는 특성을 갖고 있다. 한편 일본의 폐플라스틱 발생량은 1,300만톤/년(1994년)으로이들의 약 23%가 재이용되고 있다. 도시쓰레기의 감량 및 재자원화를 위하여 1995년 6월에 "용기포장 리싸이클법"이 제정되었으며 관련업체별로 폐플라스틱을 회수하여 재이용하고 있다. 또한 최근 플라스틱을 포함한 도시쓰레기를 자원으로 이용하는 material recycle 방책, 유화기술, 소각에너지 이용, 고형 연료화 기술 등의 향후 추진 방향에 대하여 살펴보았다.대하여 살펴보았다.
Sato, Tatsuo,Koizumi, Masahiro,Kim, Ji Hyun,Kim, Jeong Hyun,Wang, Bao Jian,Murakami, Gen,Cho, Baik Hwan Blackwell Publishing Ltd 2011 Journal of anatomy Vol.219 No.6
<P><B>Abstract</B></P><P>Fetal development of human deep back muscles has not yet been fully described, possibly because of the difficulty in identifying muscle bundle directions in horizontal sections. Here, we prepared near‐frontal sections along the thoracic back skin (eight fetuses) as well as horizontal sections (six fetuses) from 14 mid‐term fetuses at 9–15 weeks of gestation. In the deep side of the trapezius and rhomboideus muscles, the CD34‐positive thoracolumbar fascia was evident even at 9 weeks. Desmin‐reactivity was strong and homogeneous in the superficial muscle fibers in contrast to the spotty expression in the deep fibers. Thus, in back muscles, formation of the myotendinous junction may start from the superficial muscles and advance to the deep muscles. The fact that developing intramuscular tendons were desmin‐negative suggested little possibility of a secondary change from the muscle fibers to tendons. We found no prospective spinalis muscle or its tendinous connections with other muscles. Instead, abundant CD68‐positive macrophages along the spinous process at 15 weeks suggested a change in muscle attachment, an event that may result in a later formation of the spinalis muscle. S100‐positive intramuscular nerves exhibited downward courses from the multifidus longus muscle in the original segment to the rotatores brevis muscles in the inferiorly adjacent level. The medial cutaneous nerve had already reached the thoracolumbar fascia at 9 weeks, but by 15 weeks the nerve could not penetrate the trapezius muscle. Finally, we propose a folded myotomal model of the primitive transversospinalis muscle that seems to explain a fact that the roofing tile‐like configuration of nerve twigs in the semispinalis muscle is reversed in the multifidus and rotatores muscles.</P>
Kazuhisa Nakayama,Kim, Won-Sin,Seiji Torii,Masahiro Hosaka,Tsutomu Nakagawa,Jo Ikemizu,Tadashi Baba,Kazuo Murakami 원광대학교기초자연과학연구소 1992 基礎科學硏究誌 Vol.11 No.3
We used the polymerase chain reaction to identify a mouse testis cDNA that represented another member of a growing class of mammalian endoproteases involved in the processing of precursor proteins. This cDNA encoded a 655-residue protein, designated PC4, containing a bacterial subtilisin-like catalytic domain closely related to those of the recently characterized precursor-processing endoproteases, furin, PC1/PC3, PC2, and Kex2. Within this domain, the amino acid sequence of PC4 was 70, 58, 55, and 45% identical with those of mouse furin, mouse PC1/PC3, mouse PC2, and yeast Kex2, respectively. Northern blot analysis indicated that the PC4 mRNA was detectable only in the testes after the 20th day of postnatal development. Moreover, this message was mainly expressed in the round spermatids. These data suggest that PC4 represents a prime candidate for a precursor-processing endoprotease in the testicular germ cells and that its gene expression is regulated during spermatogenesis.
Naohiro Nishikawa,Katsuhiko Omoe,Kenji Murakami,Yusuke Sato,Takekazu Sawa,Yoshihiro Hagihara,Nobuhito Yoshihara,Hiroaki Okawai,Toshirou Iyama,Masahiro Mizuno,Shinya Tsukamoto 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
It is great concern that is environmental load in manufacturing. In machining site, metal working fluid (coolant) such as cutting oil,grinding fluid is used. It contains several chemicals that are oil, surface active agent, extreme pressure additive, antirust agent,antifoaming agent, preservative, biocide etc.. It is thought that it is not good for environment and human body. Machining fluid mist and splash contained several chemicals that are cause of danger for worker’s health while machining. Furthermore, time elapses, fluid is rotten by bacteria. Bad smell and degradation of machining performance occurs. Therefore, after using machining fluid, waste fluid is disposed. Incineration or coagulative precipitation and landfill etc. are necessary. It arise great disposal cost and environmental load as discharging of huge amount green house gas (CO2 etc.). Then, machining fluid decreasing or non-using is demanded in industry. So, in this investigation, new environmental machining method: the electric rust preventive machining method system that uses only water as machining fluid has been developed. In this paper, water purification recycle system in water machining system development is mentioned. Therefore, complete removal of bacteria (Enterobacter aerogenes) without using chemicals such as biocide is examined for corruption, malodor prevention and safe machining water.