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安捷伦科技为测量设备和照明控制推出业内最小的集成色彩传感器
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《自动化技术与应用》 2005年第5期i005-i006,共2页
安捷伦科技公司(Agilent Technologies,纽约证券交易所上市代号:A)日前宣布,推出业内最小的CMOS(互补金属氧化半导体)色彩传感器,其体积仅为5X5Xlmm。安捷伦HDJD-S722-QR999色彩传感器可以检测出色彩的存在,并在整个色谱范围内识... 安捷伦科技公司(Agilent Technologies,纽约证券交易所上市代号:A)日前宣布,推出业内最小的CMOS(互补金属氧化半导体)色彩传感器,其体积仅为5X5Xlmm。安捷伦HDJD-S722-QR999色彩传感器可以检测出色彩的存在,并在整个色谱范围内识别出其确切的位置。 展开更多
关键词 安捷伦科技公司 测量设备 照明控制 集成彩传感器 色谱范围
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The Equilibrium Range of Wind Wave Spectra: an Explanation Based on White Noise 被引量:1
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作者 DAI Dejun WANG Wei +1 位作者 QIAO Fangli YUAN Yeli 《Journal of Ocean University of China》 SCIE CAS 2007年第4期345-348,共4页
Laboratory experiments and field observations show that the equilibrium range of wind wave spectra presents a – 4 power law when it is scaled properly. This feature has been attributed to energy balance in spectral s... Laboratory experiments and field observations show that the equilibrium range of wind wave spectra presents a – 4 power law when it is scaled properly. This feature has been attributed to energy balance in spectral space by many researchers. In this paper we point out that white noise on an oscillation system can also lead to a similar inverse power law in the corresponding displacement spectrum, implying that the – 4 power law for the equilibrium range of wind wave spectra may probably only reflect the randomicity of the wind waves rather than any other dynamical processes in physical space. This explanation may shed light on the mechanism of other physical processes with spectra also showing an inverse power law, such as isotropic turbulence, internal waves, etc. 展开更多
关键词 wind wave spectrum equilibrium range -4 power law white noise
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Determination of Rhodamine B in Food Using HPLCUV Method 被引量:2
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作者 WANG Yong WU Na 《Chinese Food Science》 2012年第2期37-39,共3页
[ Objective] The aim was to establish a method for the determination of Rhodamine B in food by HPLC-UV. [ Metkod] Rhodamine B was extracted with acetone/hexane from food samples. After concentrated and purified by alu... [ Objective] The aim was to establish a method for the determination of Rhodamine B in food by HPLC-UV. [ Metkod] Rhodamine B was extracted with acetone/hexane from food samples. After concentrated and purified by alumina cartridge, the Rhodamine B content in the food was determined by using high performance liquid chromatography with ultraviolet visible detector. [ Result] Within tile concentration range of 0.005 - 2.000 mg/kg, the peak area of Rhodamine B presented good linear relation with the concentration, and the related coefficient was 0.999 98. With high average recovery rate, the detection limit of the method was 0.005 mg/kg[ Concision] It is a fast and accurate method with high sensitivity to detect Rhodamine B in food. 展开更多
关键词 FOOD HPLC-UV Rhodamine B DETECTION China
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Analysis of the monosaccharide composition of fucoidan by precolumn derivation HPLC 被引量:6
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作者 张晶晶 张全斌 +2 位作者 王晶 石学连 张忠山 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2009年第3期578-582,共5页
We developed an HPLC method for analysis of the monosaccharide composition of fucoidans. The fucoidan was hydrolyzed into monosaccharides with 2 mol/L trifluoroacetic acid. Using ribose as the internal standard, the m... We developed an HPLC method for analysis of the monosaccharide composition of fucoidans. The fucoidan was hydrolyzed into monosaccharides with 2 mol/L trifluoroacetic acid. Using ribose as the internal standard, the monosaecharide derivatives, obtained with 1-Phenyl-3-methyl-5- pyrazolone (PMP), were separated by reverse-phase HPLC using a gradient elution process, and monitored by ultraviolet detection at 245 nm. In the concentration range of 0.1-2.0 mmol/L, the peak area of each monosaccharide had a good linear relationship with its concentration (r^2〉0.998). The average recoveries of mannose, rhamnose, glucuronic acid, glucose, galactose, xylose, and fucose were 86.2%, 95.1%, 62.5%, 102.0%, 94.8%, 66.6%, and 105.1%, respectively. This method was accurate and had good reproducibility and could be used to determine the monosaccharide contents of fucoidans. 展开更多
关键词 FUCOIDAN MONOSACCHARIDE DERIVATION HPLC
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