针对工厂人工目视检测导向架表面缺陷成本高、效率低等问题,提出采用机器视觉检测系统来提高检测效率和精度。通过自主搭建导向架表面缺陷自动检测平台,通过CMOS相机采集表面缺陷图像,通过Visual Studio 2017应用软件上运行的检测算法...针对工厂人工目视检测导向架表面缺陷成本高、效率低等问题,提出采用机器视觉检测系统来提高检测效率和精度。通过自主搭建导向架表面缺陷自动检测平台,通过CMOS相机采集表面缺陷图像,通过Visual Studio 2017应用软件上运行的检测算法分析导向架表面缺陷。采用灰度处理、中值滤波、阈值选择、边缘检测和表面缺陷辨识等操作,对导向架表面缺陷进行识别分析并将结果反馈给执行机构,从而更加有效的识别次品。实验结果验证了该算法的可行性,单个工件的平均检测时间为43.24 ms,符合工厂的检测需求,由此可推断该检测平台及算法对导向架表面缺陷的高效检测具有一定的参考意义。展开更多
Background Normally,few immunocompetent cell are present in the endolymphatic sac(ES).During an active immune response in the inner ear,large amount of inflammatory cells,including immunocompetent cells,are seen in th...Background Normally,few immunocompetent cell are present in the endolymphatic sac(ES).During an active immune response in the inner ear,large amount of inflammatory cells,including immunocompetent cells,are seen in the ES.The current study aimed at assessing cellular proliferation within the ES during induced immune response in the inner ear.Methods Fifteen healthy,female SD rats were sensitized systemically with keyhole limpet hemocyanin(KLH),followed by local inoculation in the cochlea through basal turn fenestration with the same antigen.On Days 3,7 and 14 following inoculation,the animal was sacrificed after intraperitoneal administration of 5-bromo-2’-deoxyuridine(BrdUrd),and the temporal bone harvested.Following decalcification,infiltration by BrdUrd-and IgG-positive cells in the ES was studied on frozen sections with H&E and immunohistochemical staining.Results During the secondary immune response in the inner ear against T-dependent antigens,there is increased cellular proliferation in the ES.The proliferated cells may differentiate into immunocompetent cells at the same location.Conclusions These findings indicate that the ES plays an important role in immune response of inner ear.展开更多
Adenoma of the middle ear is a primary tumor of the middle ear that can have exocrine(mucinous)and/or neuroendocrine differentiation.It is an uncommon tumor in the practice of otolaryngology.Based on the first descrip...Adenoma of the middle ear is a primary tumor of the middle ear that can have exocrine(mucinous)and/or neuroendocrine differentiation.It is an uncommon tumor in the practice of otolaryngology.Based on the first description by Hyams and Michael in 1976,adenoma of the middle ear is defined as a benign adenomatous tumor arising from the middle ear mucosa.To date,there have been over 100 cases reported in English literature,but none by Chinese authors.展开更多
文摘针对工厂人工目视检测导向架表面缺陷成本高、效率低等问题,提出采用机器视觉检测系统来提高检测效率和精度。通过自主搭建导向架表面缺陷自动检测平台,通过CMOS相机采集表面缺陷图像,通过Visual Studio 2017应用软件上运行的检测算法分析导向架表面缺陷。采用灰度处理、中值滤波、阈值选择、边缘检测和表面缺陷辨识等操作,对导向架表面缺陷进行识别分析并将结果反馈给执行机构,从而更加有效的识别次品。实验结果验证了该算法的可行性,单个工件的平均检测时间为43.24 ms,符合工厂的检测需求,由此可推断该检测平台及算法对导向架表面缺陷的高效检测具有一定的参考意义。
文摘Background Normally,few immunocompetent cell are present in the endolymphatic sac(ES).During an active immune response in the inner ear,large amount of inflammatory cells,including immunocompetent cells,are seen in the ES.The current study aimed at assessing cellular proliferation within the ES during induced immune response in the inner ear.Methods Fifteen healthy,female SD rats were sensitized systemically with keyhole limpet hemocyanin(KLH),followed by local inoculation in the cochlea through basal turn fenestration with the same antigen.On Days 3,7 and 14 following inoculation,the animal was sacrificed after intraperitoneal administration of 5-bromo-2’-deoxyuridine(BrdUrd),and the temporal bone harvested.Following decalcification,infiltration by BrdUrd-and IgG-positive cells in the ES was studied on frozen sections with H&E and immunohistochemical staining.Results During the secondary immune response in the inner ear against T-dependent antigens,there is increased cellular proliferation in the ES.The proliferated cells may differentiate into immunocompetent cells at the same location.Conclusions These findings indicate that the ES plays an important role in immune response of inner ear.
文摘Adenoma of the middle ear is a primary tumor of the middle ear that can have exocrine(mucinous)and/or neuroendocrine differentiation.It is an uncommon tumor in the practice of otolaryngology.Based on the first description by Hyams and Michael in 1976,adenoma of the middle ear is defined as a benign adenomatous tumor arising from the middle ear mucosa.To date,there have been over 100 cases reported in English literature,but none by Chinese authors.
