工学 >>> 力学 农业工程 林业工程 工程与技术科学基础学科 测绘科学技术 材料科学 矿山工程技术 石油与天然气工程 冶金工程技术 机械工程 光学工程 仪器科学与技术 动力与电气工程 能源科学技术 核科学技术 电子科学与技术 信息与通信工程 控制科学与技术 计算机科学技术 化学工程 纺织科学技术 印刷工业 服装工业、制鞋工业 轻工技术与工程 食品科学技术 土木建筑工程 水利工程 交通运输工程 船舶与海洋工程 航空、航天科学技术 兵器科学与技术 环境科学技术 安全科学技术 工业设计
搜索结果: 1-15 共查到工学 cow相关记录26条 . 查询时间(0.14 秒)
The objective of this study was to find genetic relationships between lactation persistency and conformation traits of Polish Holstein-Friesian cows. The data were derived from SYMLEK – the Polish Nat...
We evaluated the proportion of fatty acid groups, with an emphasis on hypercholesterolaemic fatty acids, in the milk of 25 Holstein cows during the 1st period of lactation in relation to their negativ...
The plate diffusion method is a reference method in the Czech Republic for determination of residues of antimicrobial agents in raw materials and foodstuffs of animal origin. A new method using the E....
Nitrous oxide (N2O) gas is a fourth contributor in the greenhouse effect after CO2, CH4, and water vapor. Although its concentration is relatively low, but very difficult to be decomposed in the atmos...
The immunoreactivity and allergenicity of proteins present in processed food (UHT milk, yoghurt, hard cheese, cottage cheese, biscuit, and sausage intended for children) were determined in this study....
The arrangement of supplemental feed, water, shelter, and their concurrent interactions with topographic features may influence the distribution of animals and their simultaneous use of pasture’s reso...
The aim of the study was to monitore the levels of fluoroquinolone residues in bulk samples of raw cow’s milk. The bulk samples of raw cow’s milk (n = 150) were obtained from 58 different milk supplie...
Historical maps, aerial images and other historic documents are finding their way into the digital world. This offers new possibilities but also requires adapted technologies and interdisciplinary app...
要实现奶牛高产必须保证奶牛瘤胃pH值的稳定,要实现瘤胃pH值稳定必须对个体奶牛精饲料量进行精确饲喂,精饲料的数量对瘤胃pH值波动具有重要影响。设计了基于射频识别技术和单片机技术的个体奶牛精确饲喂机,可以实现个体奶牛精饲料量的精确饲喂。通过一个月饲喂实验表明,个体奶牛日产量提高了4kg。
采用可控恒温厌氧发酵装置,选用牛粪、鸡粪、稻秆3种原料,按干物质比例0∶2∶1、0.4∶1.6∶1、0.8∶1.2∶1、1.2∶0.8∶1、1.6∶0.4∶1、2∶0∶1混合,研究了各配比在15℃、20℃、25℃、30℃下的厌氧发酵情况。结果表明:随温度升高,各配比产气速率和累积产气量均增大,15℃下发酵周期最长,其他温度对发酵周期影响无显著差异;不同配比下,累积产气量均呈先增大后减小的趋势,牛粪...
设计奶牛体型评定三维图像同步采集系统,采用集散控制结构协调奶牛定位设备、图像采集装置按预定时序工作,应用3个CCD彩色摄像机与具有多通道、多独立图像芯片的DH—QP300型图像采集卡,实现了奶牛三维图像同步采集;采用LabVIEW软件作为采集主程序,通过调用动态链接库控制通用图像采集卡,选用场方式采集模式提高图像质量。试验证明,每头奶牛的图像采集与线性评定时间在3min左右,小于5min(标准)。...
From year 1994 to 1998 samples of raw cow's milk from 19 dairy locations were examined for residues of trace elements. Pb contents in all 188 samples corresponded to tolerance level (0.1 mg/kg) and in...
The fermented bifido milk, with and without supplements (skim milk powder and whey protein concentrate powder) from commercially available goat's and cow's long-life milk was produced. In goat's milk ...
Proteolysis is the principal and most complex biochemical event occurring during the maturation of the majority of ripened cheese varieties. In addition to softening the cheese body, proteolysis influ...
Staphylococcus epidermidis, commonly found on the human skin, may contaminate human milk. High-pressure pasteurisation of human milk under normal temperature preserves the majority of its protective a...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...