排序方式： 共有10条查询结果，搜索用时 0 毫秒
1
1.
近40年来，生命科学的发展极为迅速，而且生命科学与工程技术的结合已经越来越密切，利用工程技术可以对生物生产作数量预测，并对其生长过程进行控制，同时，以生物学为基础的生物生产及其产品加工的工程问题也接踵而来，生物系统工程专业也就应运而生。 相似文献
2.
近40年来,生命科学的发展极为迅速, 而且生命科学与工程技术的结合已经越来越密切,利用工程技术可以对生物生产作数量预测,并对其生长过程进行控制。同时,以生物学为基础的生物生产及其产品加工的工程问题也接踵而来。生物系统工程专业也就应运而生。专业内涵:一门为“生物系统”服务的工程技术类学科生物系统工程专业是综合运用工程技术、生物科学和信息技术,以生物生产以及相关的环境、装备和工程设施为研究对象,为生物的生产、加工与资源的合理利用服务的一门工程技术类学科。生物系统工程专业并不是研究生物学本身的发展规律,也不是生物学知识在某一特定领域的应用,而是通过了解生物学的知识和发展规律,应用工程技术、信息技术和管理技术,为生物生长创造最适宜的生长环境,提高生物的生产效率,并使资源得到最合理的利用。本专业除为农业服务外,还将为生物资源的合理利用、生物制品的加工和建立能提高人们生活质量的生物系统提供先进的工程技术手段和装备。由以上生物系统工程专业的定义与服务目标可以看出, 生物系统工程专业的内涵是明确的,与生物工程或生物技术等截然不同。而且,本专业的设立能促进工程技术与生物技术进一步交叉,为生物类学科的发展提供工程技术手段和设施。 相似文献
3.
为适应蔬菜设施栽培大规模发展对配套作业机具的需求，研制了一种结构简单、机型小巧、操作灵活、搬动轻便、价格低廉和性能可靠的适合于蔬菜设施内作业的兼用型动力小底盘和进行耕整地、植保、喷灌和运输作业的四种配套农机具． 相似文献
4.
5.
苹果图象的预处理及尺寸检测 总被引：1，自引：0，他引：1
分析了苹果品质检测中的图象预处理方法，并根据苹果的外形特征进行尺寸检测。利用白色背景下，图象的B分量灰度直方图进行图象与背景的分离，结合苹果表面光滑易反射的特点，用链符法搜索并细化轮廓，采用最小外接矩形法求横径、纵径；测量尺寸与实际尺寸的相关系数为0．955。本文对促进我国水果分级自动化有着现实意义。 相似文献
6.
To evaluate the potential of FT-NIR spectroscopy and the influence of the distance between the light source/detection probe and the fruit for measuring the sugar content (SC) of Fuji apples, diffuse reflectance spectra were measured in the spectral range from 12500 to 4000 cm(1 at 0 mm, 2 mm, 4 mm and 6 mm distances. Four calibration models at four distances were established between diffused reflectance spectra and sugar content by partial least squares (PLS) analysis. The correlation coefficients (R) of calibrations ranged from 0.982 to 0.997 with SEC values from 0.138 to 0.453 and the SECV values from 0.74 to 1.58. The best model of original spectra at 0 mm distance yielded high correlation determination of 0.918, a SEC of 0.092, and a SEP of 0.773. The results showed that different light/detection probe-fruit distances influence the apple reflective spectra and SC predictions. 相似文献
7.
A machine vision system was developed to inspect the quality of rice seeds. Five varieties of Jinyou402, Shanyou10, Zhongyou207, Jiayou and IIyou were evaluated. The images of both sides of rice seed with black background and white background were acquired with the image processing system for identifying external features of rice seeds. Five image sets consisting of 600 original images each were obtained. Then a digital image processing algorithm based on Hough transform was developed to inspect the rice seeds with incompletely closed glumes. The algorithm was implemented with all image sets using a Matlab 6.5 procedure. The results showed that the algorithm achieved an average accuracy of 96% for normal seeds, 92% for seeds with fine fissure and 87% for seeds with incompletely closed glumes. The algorithm was proved to be applicable to different seed varieties and insensitive to the color of the background. 相似文献
8.
INTRODUCTION Consumers’ acceptance of fresh or processedapples is the ultimate goal of apple breeders, foodscientists and supermarket managers. Internal qualityassessment has focused on two major objectives:removal of fruit with internal defects and taste selec-tion. Three major parameters including sugar content,acidity and firmness have to be taken into account todetermine the internal quality and the taste of an apple.Near infrared spectroscopy has been used to measureseveral properti… 相似文献
9.
INTRODUCTION Recently increasing demands from consumerhave been observed for premium quality fruit witbetter taste at a higher price. Three major parameters determine the internal quality and the tastof apples. These are hardness, sugar content antitratable acidity, which are still determined destructively. Near-infrared spectroscopy (NIRS) habeen used to nondestructively measure internquality in a wide range of fruits and vegetablesuch as onions (Birth et al., 1985), cantaloupe (… 相似文献
10.
Machine vision inspection of rice seed based on Hough transform 总被引：1，自引：0，他引：1
INTRODUCTION It is a common phenomenon that glumes ofrice seeds are incompletely closed, especially forhybrid rice. The average proportion of hybrid riceseed with incompletely closed glumes is about 26%in nature. The threshing and drying in post-harvesthandling will further increase the proportion. Thegermen segmentation is inhibited by ultravioletillumination from sunshine while the germen epi-dermis cell stops growing because of shortage ofwater due to the limited moisture. These … 相似文献
1