大黄鱼养殖群体和野生群体骨骼micro CT扫描显微结构比较

为了了解大黄鱼(Larimichthyscrocea)野生群体和养殖群体脊椎骨骨骼显微结构的差异,本研究运用了MicroCT技术对大黄鱼全鱼骨骼系统进行了扫描与三维重建,选取野生群体和养殖群体背部和尾部脊椎骨进行了显微结构参数差异分析。结果显示,大黄鱼脊椎骨与头骨、尾骨相连,脊椎骨26个,肋骨附着在第1~11腹椎,无肌间刺,胸鳍位于头骨后,背鳍、腹鳍、臀鳍和尾鳍与脊椎骨并不相连。大黄鱼野生群体背部和尾部脊椎骨的组织矿物质密度和骨矿物质密度均显著高于养殖群体(P<0.01),骨体积分数较养殖群体大(P<0.05),骨小梁间隔较养殖群体小(P<0.05),骨小梁数量、骨小梁厚度和结构模型指数上没有差别。推测是由于野生群体和养殖群体食物组成、生活环境以及活动情况等差异造成的。

The Whole Scheme Design of the Multi-function Juvenile Automobile

In recent years, with the development of society, the juvenile automobile is also in increasing demand. But many of the juvenile automobiles in market are not perfect, and there are many security hidden troubles. According to this status, based on the Fischer technology a versatile juvenile automobile is designed, and many functions of automobile are simulated. And finally, the control procedure was successfully compiled and debugged. The automobile is versatile, for example obstacle avoidance, alarming automatically and long-distance control, which improves the whole security of juvenile automobile.