搜索结果: 1-8 共查到“工学 ORIGINS”相关记录8条 . 查询时间(0.046 秒)
Origins of food reinforcement in infants
enriched environment food reinforcement infancy non-food reinforce obesity
2018/12/24
Background: Rapid weight gain in infancy is associated with a higher risk of obesity in children and adults. A high relative reinforcing value of food is cross-sectionally related to obesity; lean chi...
Measurement of Radioactivity of 238U, 226Ra, 232Th and 40K in Soil of Different Geological Origins in Northern India
Soil Natural Radionuclides Disequilibrium Dose
2013/3/12
Radioactivity of the nuclides 238U, 226Ra, 232Th and 40K was measured in soil by γ-ray spectrometry using HPGe detector. A criterion was set in order to analyse soil samples from plain, semi-hilly and...
雪莲花产地鉴别的近红外光谱分析方法（Discrimination of Snow Lotus from Different Geographical Origins by Near Infrared Spectroscopy）
雪莲花 产地鉴别 近红外光谱 K-最近邻域
2010/12/28
以青海、西藏、云南和新疆4个不同产地的雪莲花为研究对象，利用K-最近邻域（KNN）模式识别方法建立雪莲花产地鉴别模型，模型参数K和主成分因子数（PCs）通过交互验证的方法优化；同时比较了标准正态变量变换(SNV)、多元散射校正(MSC)、一阶导数和二阶导数4 种预处理方法对模型结果的影响。试验结果显示，通过SNV光谱预处理后，在K为3和PCs为5时，所得到的模型最佳，模型交互验证识别率和预测识...
Fibers Caught in the Knuckles of the Forming Wires: Experimental Measurements and Physical Origins of the Force of Peeling in the Hydroentanglement Process
Peeling Hydroentanglement Process Physical Origins
2009/3/6
In hydroentanglement process, very fine water jets with high pressure impinge on the fiberweb, which is supported by forming wires. The impact of the jets causes fiber entanglement in the fiberweb and...
Characteristic Aroma Composition Profile of Mature Stage Citrus junos（Yuzu）Peel Oil from Different Origins
yuzu Citrus junos Sieb. ex Tanaka essential oil
2010/2/3
The characteristic aroma compositions of Citrus junos Sieb. ex Tanaka (yuzu) cold-pressed peel oil were studied by both instrumental and organoleptic methods. The samples were obtained from 5 popular ...
Review: Compounds Involved in the Flavor of Surface Mold-Ripened Cheeses: Origins and Properties
flavor compounds mold surface-ripened cheese sensory properties
2008/3/25
Cheese flavor is obtained through a series of chemical changes that occur in the curd during the early stages of ripening. Lipid hydrolysis leads to FFA, which serve as substrates for further reaction...
The cryptic origins of environment-indicating phantom midges (Chaoborus)
The cryptic origins environment-indicating phantom midges Chaoborus
2014/4/18
Fragile freshwater ecosystems have acted as important sentinels for global environmental change. A detailed understanding of the implications of global change in aquatic ecosystems relies on indicator...