Results 11 to 20 of about 70,671 (203)

室内植物表型平台及性状鉴定研究进展和展望 [PDF]

open access: yes, 2020
Plant phenomics is under rapid development in recent years, a research field that is progressing towards integration, scalability, multi-perceptivity and high-throughput analysis.
Guohui, Ding   +6 more
core   +1 more source

Safety and Countermeasure of China's Food Flexible Plastic Packaging Printing Inks(我国食品塑料复合软包装用印刷油墨的安全问题及对策) [PDF]

open access: yesShipin kexue jishu xuebao, 2014
The overview of China's food plastic composite flexible packaging printing ink industry was introduced. The outstanding problems about security and the causes were analyzed.
ZHANG Liming(张黎明)   +1 more
doaj   +1 more source

Application status of steel slag asphalt mixture [PDF]

open access: yes, 2020
总结了钢渣的物理性质、化学成分及矿物相组成; 分析了影响钢渣体积安定性的因素及其改善措施; 探讨了钢渣沥青混合料的配合比设计方法; 分析了钢渣沥青混合料的路用性能(高温稳定性、低温抗裂性、水稳定性、抗疲劳性、体积安定性、抗滑性)及其功能特性(导电性与微波加热); 研究了钢渣沥青混合料的生态、社会及经济效益; 介绍了国内外的工程应用。研究结果表明:钢渣可用于沥青混合料,且应为陈化半年以上的转炉钢渣或电炉钢渣; 钢渣的物理力学性能优良,而化学成分及矿物相组成受炼钢工艺影响有所区别 ...
Gao J.   +9 more
core   +1 more source

Analysis on Public Opinion Risks of Edible Agro-products Quality and Safety Incidents in China(我国食用农产品质量安全舆情隐患分析) [PDF]

open access: yesShipin kexue jishu xuebao, 2016
Based on the analysis of edible agro-products quality and safety incidents exposed by the media between 2012 and 2014, this paper describes the inner trends and regularity from six aspects, such as times, regions, types of edible agro-products, the ...
LI Xiangzhou(李祥洲)   +4 more
doaj   +1 more source

Purification and Composition Analysis of Non-Extractable Polyphenols in Blueberry(蓝莓不可萃取多酚的纯化及组分分析) [PDF]

open access: yesShipin kexue jishu xuebao, 2016
The extraction, separation and purification of non-extractable polyphenols (NEPP) in blueberries were studied and its components were analyzed using HPLC.The results showed that adsorption and desorption rates of HPD-100C were relatively high among seven
HAN Caijing(韩彩静)   +5 more
doaj   +1 more source

Current Situations and Development on Standards of Veterinary Drugs Maximum Residue Limits in Animal Products(畜禽产品兽药残留限量标准现状与发展方向) [PDF]

open access: yesShipin kexue jishu xuebao, 2017
In this review, standards for veterinary drug residue limits in animal products among Codex Alimentarius Commission, European, USA, Japan, and China are introduced.
TANG Xiaoyan(汤晓艳)   +3 more
doaj   +1 more source

基于近红外光谱技术的赣南茶油掺假快速鉴别Rapid identification of Gannan oil-tea camellia seed oil adulteration based on near infrared spectroscopy

open access: yesZhongguo youzhi, 2022
为了探索基于近红外光谱技术快速无损鉴别掺假油茶籽油的可行性,以赣南茶油为研究对象,通过掺入不同植物油如玉米油、花生油、菜籽油、葵花籽油和大豆油等制备掺假油茶籽油,应用近红外光谱技术采集其光谱特征信息,对比不同预处理方法和主成分数,并结合线性和非线性建模方法建立油茶籽油掺假鉴别模型,以识别准确率(纯油茶籽油样品和掺假油茶籽油样品被正确判别的比例)、灵敏度(纯油茶籽油样品被正确判别为纯油茶籽油的比例)、特异性(掺假油茶籽油样品被正确判别为掺假油茶籽油的比例)作为模型的评价指标,优选出最佳模型。结果表明 ...
沈乐丞,曾秀英,温志刚,张远聪,刘贤标,王玫,刘婷,范伟华,邹辉SHEN Lecheng, ZENG Xiuying, WEN Zhigang, ZHANG Yuancong, LIU Xianbiao, WANG Mei, LIU Ting, FAN Weihua, ZOU Hui
doaj   +1 more source

探究农业气象灾害对农作物产量的影响

open access: yes农业科学, 2020
农业气象灾害是影响农作物产量的重要因素,虽然气象灾害的发生不可避免,但是我们可以根据气象灾害的特点采取相应的防御措施,防患于未然,尽可能的避免农作物的大规模减产。因此,熟悉认知各类气象灾害的特点,增强气象灾害的防范意识,采取应对气象灾害的基础设施建设,对保障农作物产量的具有重要意义。本文主要分析了农业气象灾害的特点,并针对农业气象灾害对农作物产量造成的不良影响提出了一些解决方法,以期减少农业灾害对农作物的影响,促进农业生产的健康发展。
雨田 雷, 丽君 袁
semanticscholar   +1 more source

High Performance Liquid Chromatographic Determination of Thiocyanate in Milk(牛奶中硫氰酸盐高效液相色谱测定方法) [PDF]

open access: yesShipin kexue jishu xuebao, 2013
A high performance liquid chromatographic -HPLC- method was developed for determining thiocyanate in milk. HPLC analysis was performed on a Dionex IonPac AS19 -4mm×250mm- anionic chromatography column with DAD detector, 005mol/L Na2HPO4 solution ...
ZHAO Wen-rong(赵文荣)   +3 more
doaj   +1 more source

Determination of Organophosphorus Pesticide Residues in Fresh Tea Leaves(茶鲜叶中有机磷农药残留分析) [PDF]

open access: yesShipin kexue jishu xuebao, 2016
To investigate the pollution of organophosphorus pesticides in fresh tea leaves, a simple and rapid analytical method was established for simultaneous determination of seven organophosphorus pesticides (dichlorvos, dimethoate, chlorpyrifos, methyl ...
LIU Tengfei(刘腾飞)   +4 more
doaj   +1 more source

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