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分拣导入物料的投影尺寸及近似体积测量计算方法
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作者 刘强 马立新 +3 位作者 闵定勇 赵逍 柳智磊 蔺应晓 《物流技术》 2022年第2期113-118,共6页
分析了目前自动化物流分拣输送系统在物料导入输送环节的工艺特点和设备控制现状,并结合应用光电检测、工业可编程控制等技术,针对水平交叉带分拣输送机应用场景,对其中物料导入控制环节所面临的物料外形尺寸测量和计算问题,提出了基于... 分析了目前自动化物流分拣输送系统在物料导入输送环节的工艺特点和设备控制现状,并结合应用光电检测、工业可编程控制等技术,针对水平交叉带分拣输送机应用场景,对其中物料导入控制环节所面临的物料外形尺寸测量和计算问题,提出了基于物料轮廓最大值检测、尺寸特征捕捉、长宽比关系判断等要素来对物料投影尺寸进行测量的计算方法,具有数据采集实时、程序编写简单、运算量少等特点;同时基于对导入输送的物料进行横向、纵向的截面段断层扫描测量并累加计算,以较低的器件成本及较少的控制器程序运算量,实现对物料体积的近似测量计算,是一种较为经济和可取的控制计算方法。 展开更多
关键词 投影尺寸 交叉带分拣输送机 导入物料 近似体积 可编程控制器
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Preliminary Study on Phosphoenolpyruvate Carboxylase(PEPCase) Gene Introduced into Wheat
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作者 张彬 马建军 贾栋 《Agricultural Science & Technology》 CAS 2009年第2期26-28,共3页
[ Objective] The aim of this study was to introduce Phosphoenolpyruvate Carboxylase (PEPCase) gene into common wheat Linyou 145. [ Method] With the material of common wheat Linyou 145, Phosphoenolpyruvate Carboxyla... [ Objective] The aim of this study was to introduce Phosphoenolpyruvate Carboxylase (PEPCase) gene into common wheat Linyou 145. [ Method] With the material of common wheat Linyou 145, Phosphoenolpyruvate Carboxylase (PEPCase) gene was introduced into wheat embryo callus by the agrobacterium-mediated transformation system, and then analyzed through successive selection with selective medium con- taing gygrornycin to detect the gene at the molecular level. [Result] The hyg-resistant plants were obtained, and GUS histochemical staining showed the leaf of resistant plants was stained dark blue. The target bands appeared in PCR analysis. [ Conclusion] Phosphoenolpyruvate Car- boxylase (PEPCase) gene has been primarily introduced into the recipient material. 展开更多
关键词 WHEAT Phosphoenolpyruvate Carboxylase (PEPCase) gene
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