海藻在卷烟添加剂中的应用研究进展

自从世界卫生组织开展控烟运动以来,世界控娴运动取得了卓有成效的成果。据估计,世界目前吸烟人口控制到大约9亿,中国吸烟人数约为3亿。随着国内外该行业的不断竞争,以及人们健康意识的逐渐增强,我国烟草行业面临着国内外的多重压力,     

Influence of Ultrasonic Treatment on the Allergenic Properties of Shrimp （Penaeus vannamei ） Allergen

The present study was undertaken to determine whether high intensity ultrasound could reduce the allergic properties of shrimp allergens. Reducing the allergenic properties of these allergens will be beneficial to allergic individuals. Samples of shrimp protein extract and shrimp muscle were treated by high-intensity ultrasound with water bathing at 0 ℃ or 50 ℃ for different time periods. The treated and untreated samples were then analyzed by SDS-PAGE, Western blots and competitive inhibition ELISA （Ci-ELISA） to determine the shrimp allergenicity. The results show that high-intensity ultrasound has no effect on allergenicity when the extracts were treated at 0℃. However, a significant decrease was observed in the level of the major shrimp allergen, Pen a 1, when the samples were treated at 50 ℃. In the determination of allergenicity with CiELISA, a reduction in IgE binding was also observed.     

CaCl_2对KAlSi_3O_8-CaSO_4-CaCO_3反应体系的影响研究

通过CaCl2添加剂对KAlSi3O8-CaSO4-CaCO3体系研究反应温度和反应时间的影响研究,结果表明:随着CaCl2加入量的增多,体系的反应温度下降,反应时间缩短,当CaCl2的加入量为10%时,反应温度可降至1000℃,反应时间降至25min,此时KAlSi3O8的转化率仍可高达83.24%。研究CaCl2的加入对KAlSi3O8-CaSO4-CaCO3反应体系动力学过程的影响,得出反应体系符合金斯特林格动力学方程:FK(G)=1-2/3G-(1-G)2/3=KKt,反应受扩散过程控制,计算出当CaCl2的加入量为10%时,体系的表观活化能可从原来的128.921kJ/mol下降至58.320kJ/mol。     

基于Faster R-CNN的食品图像检索和分类

面向食品领域的图像检索和分类等方面的研究成为多媒体分析和应用领域越来越受关注的研究课题之一.当前的主要研究方法基于全图提取视觉特征,但由于食品图像背景噪音的存在使得提取的视觉特征不够鲁棒,进而影响食品图像检索和分类的性能.为此,本文提出了一种基于Faster R-CNN网络的食品图像检索和分类方法.首先通过Faster R-CNN检测图像中的候选食品区域,然后通过卷积神经网络（CNN）方法提取候选区域的视觉特征,避免了噪音的干扰使得提取的视觉特征更具有判别力.此外,选取来自视觉基因库中标注好的食品图像集微调Faster R-CNN网络,以保证Faster R-CNN食品区域检测的准确度.在包括233类菜品和49 168张食品图像的Dish-233数据集上进行实验.全面的实验评估表明：基于Faster R-CNN食品区域检测的视觉特征提取方法可以有效地提高食品图像检索和分类的性能.     

氨基酸螯合微量元素的研究及其在水产动物中的应用

微量元素在水产动物的生命过程中是必不可少的,但是仅靠从水体中吸收是不能满足机体的正常需要的,还必须从饲料中摄取。至今,微量元素添加剂的发展经历了三代:第一代为无机盐类,常用的为硫酸盐等。无机盐类的微量元素添加剂易潮易结块,易与维生素发生拮抗,在植酸等抗营养因子存     

A unified C-band and Ku-band geophysical model function determined by neural network approach

The geophysical model function （GMF） describes the relationship between backscattering and sea surface wind, so that wind vec- tors can be retrieved from backscattering measurement. The GMF plays an important role in ocean wind vector retrievals, its performance will directly influence the accuracy of the retrieved wind vector. Neural network （NN） approach is used to develop a unified GMF for C-band and Ku-band （NN-GMF）. Empirical GMF CMOIM and QSCAT-1 are used to generate the simulated training data-set, and Gaussian noise at a signal noise ratio of 30 dB is added to the data-set to simulate the noise in the backscat- tering measurement. The NN-GMF employs radio frequency as an additional parameter, so it can be applied for both C-band and Ku-band. Analyses show that the %predicted by the NN-GMF is comparable with the σpredicted by CMOIM and QSCAT-1. Also the wind vectors retrieved from the NN-GMF and empirical GMF CMOIM and QSCAT-1 are comparable, indicating that the NN-GMF is as effective as the empirical GMF, and has the advantages of the universal form.     

二十年后重返餐桌的鲸肉

位于日本本州岛西南岸的和歌山,是日本西部的捕鲸业的中心城市。目前,那里大约有85%的小学和中学已经开始了食用鲸肉的午餐。并且这一政府举动在学生们中间受到了非常广泛的欢迎。据推广这一行动的和歌山教育部门的官员介绍,鲸肉被加工成肉饼或肉球,或者经过甜酸酱腌制提供给孩子们食用,非常适合他们的口味,学生们普遍反映这些鲸肉加工品吃起来很可口。同时,他还表示让日本的孩子们食用鲸肉的目的不仅是希望他们了解日本的捕鲸传统,同时,还可以让他们学习和认识日本     

赤城县独石口沸石在饲料添加剂中的应用

在畜禽饲料中添加适量沸石粉,可代替5％左右的玉米或全价配合饲料,降低饲料成本,提高饲料利用率,而且可降低畜禽舍内有害气体含量,有助于改善舍内空气质量,有利于畜禽健康。同时,改善饲养人员劳动环境。