A Subjective Force Perception Model of Humans and its Application to Vehicle Operation Systems

広島大学(Hiroshima University)博士(工学)Doctor of Engineering in System Cyberneticsdoctora

水中音に関する研究―I : 日本近海産Alpheus属の水中音について

Four species of the genus Alpheus FABRICIUS, so-called snapping shrimps, namely A. bis-incisus de HAAN, A. brevicristatus de HAAN, A. rapax FABRICIUS, and A. japoni-cus MIERS, were caught in the coastal waters of Nagasaki Prefecture and their under-water sounds were recorded. These shrimps emit peculiar pulse which is very powerful. These sounds are emitted by striking of the inside projections of their large chela. The duration of this sound (pulse) is less than 18 millisecond and the frequency band reaches more than 7kc. It seems that the frequency of the sound emitted by individual specimen is less than 1 per second. The mechanism of emitting the sound varies by species but their sounds are all pulses which resemble closely. Furthermore, a sound spectorogram differs in detail from any other even in the same specimen. In effect, it is guessed that the underwater sound (pulse) emitted by genus Alpheus constitutes the largest part of"FRYING NOISE"

Nucleotide receptors in hepatic stellate cells of the rat

AbstractWhen hepatic stellate cells were stimulated by UTP, ATP, or ADP, cellular levels of inositol phosphates significantly increased (UTP > ATP > ADP > 5′-O-(3-thiotriphosphate). Thirty min after incubation with 100 μM of UTP, ATP, or ADP, levels of inositol monophosphate increased to 1318 ± 116, 616 ± 87 and 591 ± 234% of control levels, respectively, with concomitant increase in the production of inositol trisphosphate and bisphosphate. These nucleotides transiently increased the [Ca2+]i of fura-2-loaded stellate cells. Moreover, UTP, ATP, ADP and adenosine 5′-O-(3-thiotriphosphate) were able to induce contraction of stellate cells as detected using the silicone-rubber membrane method. These results suggested that hepatic stellate cells have nucleotide receptors which react predominantly with extracellular UTP and ATP and trigger the receptormediated contraction of the cells

九州西方海域産小型歯鯨類の研究―14 : 東支那海済洲島の南方海域で捕獲されたハセイルカについて

Delphinius sp., which is called HASE IRUKA (Hase dolphin) in Nagasaki, Japan, live in the west sea area of Kyushu. The authors investigated whether or not that dolphin is identified with SIEBOLD\u27s dolphin or Delphinus capensis, and is different from Delphinus delphis. As the result of the investigation on the body color, external proportion, and skull measurement, it was proved that Hase dolphin is identical to CGAWA\u27s Delphinus capensis and it was presumed that SIEBOLD\u27s dolphin is this species. But it is unknown if Hase dolphin is identical to TRUE\u27s Delphinus capensis which was caught in the coastal sea of the Cape of Good Hope

全頭類の研究-2 : 長崎県沿岸域で捕獲されたギンザメChimaera phantasma JORDAN et SNYDERの生殖について

The internal sexual organs and reproduction of Chimaera phantasma caught in the coastal waters of Nagasaki were investigated. The testes of C. phantasma is that of seminiferous follicle type. The seminiferous follicles develop more in the region near the outer pole of the testis. Both ovaries are functional and each gonopores open separately without the cloaca. Some ova were covered in the capsule one by one at the nidamental gland, as in most Elasmobranchii, and the ova were spawned in succession in the same breeding season. Sexual maturity in females was apparently reached at a body length of about 63cm, while in males it was attained at about 51cm. The reproductive season of C. phantasma appears to last about a half year, with the peak activity during winter.1975年から1980年まで長崎沿岸域より採集された408個体(雄・164,雌・244)のギンザメChimaera phantasmaの生殖器官の調査を行った.本種の生殖腺の発達過程は板鰓類のそれとは全く異なるが,生殖器官の形態・様式及び精子形式の過程等は極めてよく似ている.そこで,ギンザメの生殖について板鰓類と比較しながら述べた.本種の生殖腺は多くの板鰓類と異なり,雌雄とも又左右いずれも機能的である.雄は体長約51cm,雌は約63cmで性的成熟体長に達すると考えられる.産卵直前の卵は直径40mm以上にもなり,連続していくつかの卵をカプセルにつつんで産出する.産卵期は冬期を中心にして半年近くの長期にわたるものと考えられる

全頭類の研究-1 : ギンザメChimaera phantasmaの形態と雄の生殖器官について

The morphological characters and ecology of Chimaera phantasma and male\u27s reproductive organs were investigated. Specimens (115 males, 191 females) were collected at the Nagasaki Fish Market or caught by the authors themselves from September 1975 to October 1976. The variation of proportion percentages compared with body length is not remarkable and the growth curves of the male and female are indicated by the following formula: Male: W=0.1913L2.2269 Female:W=0.0376L2.6349 It was observed that the male\u27s condition factor increases with the increment of body length, but no seasonal variation of this factor could be observed. In females no variations of any kind were observed. The diet is basically formed by Crustacea, especially crabs, and teeth consist of three pairs of dental plates. The posterior clasper is trifurcated and has no remarkable appendices. External radii are rigid and the anterior clasper bears 8 serrations in a line. The pelvic girdle consists of right and left cartilages. Sexual maturity in males can be considered to be reached at a body length of 45 to 50cm.1975年9月から1976年10月にかけて長崎魚市に水揚げされたり,著者らが長崎県沿岸で採捕したギンザメ306個体(雄115個体,雌191個体)について,形態学的に,雄についはは生殖生態についても調査した。成長に伴う各部の外形プロポーションの割合はほぼ一様である。また,雌雄の成長式は次式で示された。雄:W(g)=0.1913L(cm)2.2269 雌:W(g)=0.0376L(cm)2.6349雄の肥満度は成長に伴い減少するのが観察された。歯は非常に強固な三対の歯板よりなり,主として底棲動物を捕食し,中でも小型のカニを最も多く捕食している。Posterior clasperは三叉し,先端は顕著な附属物はなく,external radiiは屈曲しない。Anterior clasperの内縁には一列に並んだ8個の棘があり,Pelvie girdleは左右二つに分離している。本種の雄は体長(No. 14) 45cmから50cmで成熟に達する

ギンザメChimaera phantasmaの精子形成について

Comparing with the fine structure of spermatogenic cell of selachians and oter vertebrates, that of the chimaera was observed with light and electron microscopes. The origin of chimaera testis differed essentially from that of selachians. However the chimaera had many resemblances to the selachians in the formation of the spermatozoon, except for the following two points; first, the X organ and the axial midpiece rod of the neck were amorphous and, second, there was only one accessory on the tail flagellum.ギンザメの精細胞の微細構造について,板鰓類並びに他の脊椎動物のそれと比較しながら,電子顕微鏡的観察を行った.精巣の起源は板鰓類のそれとは全く異なる.精子の形態は次の二点を除いて板鰓類とは多くの類似点を有する.すなわち,その相違点とは,頸部のXorganとaxial midpiece rodのいずれもが無構造であること,および尾部のアクセサリーが一つしかないことである

Sevoflurane induces cardioprotection through reactive oxygen species-mediated upregulation of autophagy in isolated guinea pig hearts.

PURPOSE: Sevoflurane increases reactive oxygen species (ROS), which mediate cardioprotection against myocardial ischemia-reperfusion injury. Emerging evidence suggests that autophagy is involved in cardioprotection. We examined whether reactive oxygen species mediate sevoflurane preconditioning through autophagy. METHODS: Isolated guinea pigs hearts were subjected to 30 min ischemia followed by 120 min reperfusion (control). Anesthetic preconditioning was elicited with 2 % sevoflurane for 10 min before ischemia (SEVO). The ROS-scavenger, N-(2-mercaptopropionyl) glycine (MPG, 1 mmol/l), was administered starting 30 min before ischemia to sevoflurane-treated (SEVO + MPG) or non-sevoflurane-treated (MPG) hearts. Infarct size was determined by triphenyltetrazolium chloride stain. Tissue samples were obtained after reperfusion to determine autophagy-related protein (microtubule-associated protein light chain I and II: LC3-I, -II) and 5\u27 AMP-activated protein kinase (AMPK) expression using Western blot analysis. Electron microscopy was used to detect autophagosomes. RESULTS: Infarct size was significantly reduced and there were more abundant autophagosomes in SEVO compared with control. Western blot analysis revealed that the ratio of LC3-II/I and phosphorylation of AMPK were significantly increased in SEVO. These effects were abolished by MPG. CONCLUSIONS: Sevoflurane induces cardioprotection through ROS-mediated upregulation of autophagy

ARTICLE Development of radionuclide distribution database and map system on the Fukushima nuclear accident

The Radionuclide distribution database and map system, which provide basic information for evaluations and countermeasures of the accident at Fukushima Daiichi nuclear power plant, are explained. Due to massive earthquake and tsunami, Fukushima Daiichi nuclear power plant had been damaged and spread out radioactive materials around the Fukushima region. In order to meet the various requirements from government, local government, residents, and/or researchers, we developed two systems to provide those data to the public. One of the systems is a database system which is designed to provide quantitative data for detailed analysis. Another is a map system which provides intuitive images for the qualitative estimation. In the two systems, it is possible to provide the information requested by a wide range of people