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按照GB/T 23383-2009利用反相高效液相色谱法对肉制品中双乙酸钠含量进行分析,建立数学模型,对测量结果的不确定度来源如标准物质、校准工作曲线、样品处理、回收率等各不确定度分量进行分析评定及量化。按数学模型计算得肉制品中双乙酸钠含量为0.460g/kg时,本方法的标准不确定度为0.022g/kg,扩展不确定度为0.044g/kg,最终结果的不确定度主要由样品溶液中双乙酸钠含量和样品处理过程产生。 相似文献
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目的:评定液相色谱-质谱/质谱法测定白酒中甜蜜素含量的不确定度。方法:本文依据SN/T 1948-2007《进出口食品中环己基氨基磺酸钠的检测方法液相色谱-质谱/质谱法》及JJF1059.1-2012《测量不确定度评定与表示》,对测量过程中的不确定度来源进行分析和合成。结果:当被测样品中甜蜜素含量为0.291 5μg/kg时,其扩展不确定度为(0.291 5±0.0127)μg/kg,k=2。结论:重复性测定及液相色谱质谱仪的稳定性是食品中甜蜜素检测准确与否的关键所在。 相似文献
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目的:评定GB/T 5009.34-2003《食品中亚硫酸盐的测定》中盐酸副玫瑰苯胺法测定酱腌菜中二氧化硫含量的不确定度。方法:对盐酸副玫瑰苯胺法测定酱腌菜中二氧化硫含量测定过程中各影响因素进行分析,建立数学模型,确定影响不确定度的因素并对各个因素进行评估,以此计算各变量的不确定度和合成不确定度,最终计算扩展不确定度。结果:当酱腌菜中二氧化硫含量的测定值为98.632 4 mg/kg时,计算得到扩展不确定度为0.609 3 mg/kg,测定结果表示为(98.632 4±0.609 3)mg/kg,k=2,P=95%。结论:盐酸副玫瑰苯胺法测定酱腌菜中二氧化硫含量的不确定度主要由样液中二氧化硫的含量和平行实验结果引起。 相似文献
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Holding percent of train media resources across China based on "Time Cube" on the Intermedia Recommendation Introduction Meeting on December HTC announced its high-profile strategy of tour marketing tapping the immeasurable potentials on the train. Meanwhile HTC officially launched its brand new product Olympic Train on the meeting providing a fabulous platform for all the brands that are prepared to do a smart marketing on the occasion of Olympic Games.…… 《中国对外贸易(英文版)》2008,(1):58
Holding 88 percent of train media resources across China, based on "Time Cube", on the 2008 Intermedia Recommendation and Introduction Meeting on December 19, 2007, HTC announced its high-profile strategy of tour marketing and tapping the immeasurable potentials on the train. Meanwhile, HTC officially launched its brand new product Olympic Train on the meeting, providing a fabulous platform for all the brands that are prepared to do a smart marketing on the occasion of 2008 Olympic Games. 相似文献
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Audrey Guo 《中国对外贸易(英文版)》2008,(1)
In the end of 2007, Air China Limited (hereinafter "Air China") and Shanghai Airlines, formally joined Star Alliance at a ceremony held in the new Terminal Three at Beijing Capital International Airport. With the addition of the two Chinese airlines, Star Alliance now has 19 member carriers operating 17,000 daily flights to 897 destinations in 160 countries. 相似文献
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《中国对外贸易(英文版)》2008,(5):50-51
The overall strategic relationship between U.K. and China is "better than ever", China- Britain relations have maintained good momentum, with increased high-level exchanges and the reinforcement of strategic mutual trust, with more room for growth in the future. 相似文献
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Guo Yan 《中国对外贸易(英文版)》2008,(5)
Domino effects of the global finance agitation As the origin of the subprime crisis,US financial institutions lost USS45 billion last year,accounted for over half of the total US,EU & Japan loss.Since January 15th,Chtigroup released its financial statement of the 4th quarter,showing a net deficit of USS9.83 billion,which marked the hisoric high of its quarterly deficit. 相似文献
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《中国对外贸易(英文版)》2008,(6):62-65
Among the Fortune 500 firms,more and more images from China emerge out.On the 2008 list,Sinosteel Corporation,a landmark group of China industries quietly squeezes into the candidate line.As the largest steel service & trade enterprise,its sales reached at RMB 111.24 billion,with a year-on-year increase of 83.03 percent,and the profit grew by 180.03 percent.On the Sinosteel 2008 Work Meeting,the president Huang Tianwen uttered,"In the coming year,we will work for US$20 billion sales,and look forward to getting a position in Fortune 500 firms for ourselves." 相似文献
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Zang Kejia 《中国对外贸易(英文版)》2008,(7):16-17
When the 103rd Canton Fair is approaching, an old friend of Canton Fair, Li Ying from Jiangsu prov-ince recollected his past five years' experiences to the grand trade meeting. Each year is special, with some unforgettable memories colored by the year. 相似文献
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Bai Yifeng 《中国对外贸易(英文版)》2008,(1):59-59
Under the guidance of the theme slogan of the 29th Olympic Games - One World One Dream, with dream, love and dedication as its theme, the 2008 Music Grand Ceremony & 1000 People Charity Concert on 100 days cotmtdown to Paralympic Gamesis officiaily launched on December 22, 2007. The 2008 Music Grand Ceremony is sponsored by China Disabled Persons' Federation, and co-hosted by National Paralympic Committee of China, 相似文献
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Chun Yi 《中国对外贸易(英文版)》2008,(1):13
Aseries of events that occurred in October 2007, are rewriting the history of China's energy industry: November 3 an Energy Law Committee asked the public for suggestions on improvements; forty top experts came together to form the National Energy Expert Advisory Committee on November 6; and the National Oil Reserve Center (NORC)became the nerve centre of oil reserves on November 18. Yet, behind the progress of these recent activities remains the fact that international oil prices still hover around a very high price of US$ 90/barrel, and China's oil imports are close to accounting for half of its total oil reserves. 相似文献
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《中国对外贸易(英文版)》2008,(6):45-45
With its headquarters in the historic city of Yangzhou,Jiangsu Muyang Group Co.,Ltd has since its founding in 1967 grown into a well-known group corporation whose activities cover research & development,project design,manufacturing,installation and services in a multitude of industries including feed machinery and engineering,storage engineering,grain machinery and engineering,environmental protection,conveying equipment and automatic control systems. 相似文献
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China Harbor Ten People elected the entrepreneurs who contributed a lot to port economy enterprises this year trough their talent management.These ten people embody their social responsibility professional skills creative ability and charming personality.Bearing full confidence in China's port economy the port entrepreneurs are brave enough to explore a brand new area so as to promote harbor economic development.…… 《中国对外贸易(英文版)》2008,(6):46-46
2007 China Harbor Ten People elected the entrepreneurs who contributed a lot to port economy and enterprises this year trough their talent management.These ten people embody their social responsibility,professional skills,creative ability,and charming personality.Bearing full confidence in China's port economy,the port entrepreneurs are brave enough to explore a brand new area,so as to promote harbor economic development. At the very beginning of 2008,China Shipping Website,Dalian Maritime University,and China Port and Shipping In- stitute jointly select the 2007 China Harbor Ten People,demonstrate port entrepreneurs' stunning minds,disclose their secrets to success,and providing abundant experiences to others in harbor development.The top ten people are various excellence during the ups and downs harbor development. 相似文献