- 著者
- Ko Tomikawa Yuji Abe Takafumi Nakano
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.24, no.2, pp.259-266, 2019-11-25 (Released:2019-11-25)
- 参考文献数
- 10
- 被引用文献数
- 5
A new species of pseudocrangonyctid amphipod, Pseudocrangonyx uenoi, is described from cave streams in Taga town, central Honshu, Japan. Previous molecular phylogenetic studies reported the taxonomic status of the Taga populations of Pseudocrangonyx as an undescribed species. We present the diagnostic features to discriminate P. uenoi from the other congeners on the basis of morphological study. Pseudocrangonyx uenoi is closely related to P. daejeonensis Lee, Tomikawa, Nakano, and Min, 2018, but clearly distinguished from the latter by the presence of calceoli on female antenna 2, the 5-dentate lacinia mobilis of the left mandible, setation of the peduncular articles of pleopods, the number of articles of rami of the pleopods, a shorter terminal article of uropod 3, and a telson with a deeper cleft.
- 著者
- Hideaki MASUZAWA Norio NAKAMURA Kimiyoshi HIRAKAWA Keiji SANO Masanori MATSUNO Hiroaki SEKINO Koji MII Yuji ABE
- 出版者
- The Japan Neurosurgical Society
- 雑誌
- Neurologia medico-chirurgica (ISSN:04708105)
- 巻号頁・発行日
- vol.16pt1, no.1, pp.77-90, 1976 (Released:2006-12-28)
- 参考文献数
- 40
- 被引用文献数
- 6 14
Translational acceleration head injury experiment was performed on 12 Japanese monkeys and one baboon using a HYGE sled and a slider-impactor system. All the monkeys became concussed by force ranging 241 to 366G in slider average acceleration and two of them died of concussion (fatal or irreversible concussion). The fatal concussion animals as well as the delayed death ones showed almost unexceptionally rib and clavicle fractures and mediastinal hemorrhage. Subarachnoid hemorrhage seen in six animals were not correlated with the outcome. We were unable to produce visible brain lesions, such as brain contusion, subdural hematoma, or intracerebral hematoma, by using pure translational acceleration impacts to the head. It should be misleading to draw a human or primate head injury tolerance limit from the fatal concussion level. Interestingly seven monkeys showed spontaneous eyelid blinking and four showed pupillary light reaction immediately post-impact and at least six animals showed “normal” EEG activity ten seconds after the impact. The cause of concussion was discussed and the role of cardiorespiratory supression by the primary shock is suggested.