Physio-Engineering Study on the Cardiac Function of Avian Eggs.

禽蛋心脏功能的生理工程研究。

基本信息

批准号：
01044010
负责人：
TAZAWA Hiroshi
金额：
$ 2.5万
依托单位：
Muroran Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

1. Investigations on cardiogenic minute movements (ballistocardiogram, BCG) and cardiogenic acoustic pressure (acoustocardiogram, ACG) in avian eggs.(1) Using a microcomputer and an audiocartridge for detection of BCG, we developed the simultaneous measuring system of ECG, BCG and arterial blood pressure. It was found that in chicken eggs the BCG was attributed to not only the ventricular blood ejection, but also the ventricular isovolmetric contraction and presystole.(2) The ACG detected by a condenser microphone was compared with the impedance-cardiogram (ICG), ECG, BCG and egg pressure in order to find origins of this signal. Some relations were found with egg pressure and ICG, but not found with the BCG, requiring further investigations.(3) The cardiogenic ballistic movements of the egg were detected as the displacement BCG (by laser displacement meter), the movement BCG (by laser speckle meter) and the velocity BCG (by audiocartridge and piezoelectric film).2. Non-invasive measure … More ments of embryonic heart rate (f_H) in birds.(1) The embryonic f_H was determined noninvasively by measuring the BCG during the last half of incubation period in six species of domesticated birds (quail, chick, turkey, peafowl, duck and goose) and three species of Hawaiian seabirds (albatross, shearwater and noddy), eliciting new comparative physiological knowledges.(2) It was found that the embryonic f_H of the wild pigeon changes variously during development between individual clutches, while that of domesticated pigeons changes similarly. However, the f_H of two embryos in each clutch of the wild pigeon was found very similar. These findings suggest that genetic factors are involved in the variation of the embryonic f_H of wild birds.3. Comparative study on the development of endothermic homeothermy was made by determining metabolic responses of embryos and hatchlings to prolonged cooling in duck, chicken, noddy and pigeon.4. Effects of the shell diffusive conductance and altered ambient oxygen on embryonic oxygen consumption were elucidated. Less

1。对禽卵中心脏病分钟运动（Ballistocardiogram，BCG）和心源声压力（Acoustocardiogram，ACG）的研究。（1）使用微型计算机和AudioCartridge来检测BCG，我们开发了ECG，BCG，BCG和Arerterial alterylylylylylyly sollydermoly somerylylys sollowsylys somplysial somplysial symect。发现在鸡蛋中，BCG不仅归因于心室流血，而且还归因于心室的异伏特式收缩和前螺旋。发现与卵压力和ICG的某些关系，但在BCG中未发现，需要进一步研究。（3）将鸡蛋的心脏病弹道运动检测为位移BCG（通过激光位移仪），运动BCG（通过激光仪表仪）和VELOCITY BCG（通过AudioCartridge和Pieiocartridge）。 Non-invasive measurement … More ments of embryonic heart rate (f_H) in birds.(1) The embryonic f_H was determined noninvasively by measuring the BCG during the last half of incubation period in six species of domesticated birds (quail, chick, turkey, peafowl, duck and goose) and three species of Hawaiian seabirds (albatross, shearwater and noddy), eliciting new comparative （2）发现野生鸽的胚胎F_H在单个离合器之间发育过程中发生了不同的变化，而驯养的鸽子的胚胎F_H则变化。但是，发现野鸽的每个离合器中两个胚胎的F_H非常相似。这些发现表明，遗传因素与野生鸟类的胚胎F_H的变化有关3。对吸热性主管发展的比较研究是通过确定胚胎和孵化的代谢反应以延长鸭，鸡肉，点头和鸽子的延长冷却的方法来进行的。4。阐明了壳体差异电导和环境氧对胚胎氧消耗的影响。较少的