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本文通过围岩分类因素对围岩类别及爆破地震传播影响的内在关系进行分析,在对城市地下工程现场围岩分类及爆破地震量测的基础上。首次建立了围岩分类与爆破地震之间的定量关系,为爆破地震灾害的预测和爆破设计提供了更切实可行的数据。 相似文献
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为了有效地提高车轴校平机的校平效率,采用IBM-PC586微机远程监控和PLCFX2-32MR现场测控的分布式控制模式,研制了一种高自动化的校平机控制系统,经运行证明,系统在保证较高的控制精度同时,有很强的抗干扰能力。 相似文献
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Image segmentation directly determines the performance of automatic screening technique. However, there are overlapping nuclei in nuclei images. It raises a challenge to nuclei segmentation. To solve the problem, a segmentation method of overlapping cervical nuclei based on the identification is proposed. This method consists of three stages: classifier training, recognition and fine segmentation. In the classifier training, feature selection and classifier selection are used to obtain a classifier with high recognition rate. In the recognition, the outputs of the rough segmentation are classified and processed according to their labels. In the fine segmentation, the severely overlapping nuclei are further segmented based on the prior knowledge provided by the recognition. Experiments show that this method can accurately segment overlapping nuclei. 相似文献
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以山西产三白瓜为主要原料,使用实验室保藏酿酒酵母BH8(编号为B)和商业白葡萄酒酿酒酵母EnartsES181(编号为E)发酵三白瓜汁并分析发酵酒中的香气成分。研究结果表明,两株酵母都表现出了较好的三白瓜酒发酵性能,发酵至第6天时达到发酵终点,产生的酒精浓度为5.96%(E),5.50%(B),残留葡萄糖含量为0.37g/L(B)和0.30g/L(E),果糖含量为2.03g/L(B)和1.05g/L(E),并伴随着总酸含量的增加。采用顶空固相微萃取气质联用法(HS-SPME-GC-MS),在两种三白瓜发酵酒中共检出47种香气成分,主要为酯类和醇类,酵母B在产酯类风味物质方面相对优势更大。感官品评两种三白瓜发酵酒,酒体协调,具有浓郁的三白瓜果香。实验所选用的酵母可用于三白瓜酒的发酵,三白瓜可开发成三白瓜酒。 相似文献
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