O432.3 99042118计算机灵敏波带法测色研究=Study of surface colormeasurements by sensitive wave bandmethod[刊,中]/王守权,张薇(长春邮电学院通信工程系.吉林,长春(130012))//吉林大学.自然科学学报.—1998,(4).—63-65根据色度学...O432.3 99042118计算机灵敏波带法测色研究=Study of surface colormeasurements by sensitive wave bandmethod[刊,中]/王守权,张薇(长春邮电学院通信工程系.吉林,长春(130012))//吉林大学.自然科学学报.—1998,(4).—63-65根据色度学理论寻求灵敏波长的个数和确切位置,从而建立灵敏波带法计算机测色机制,为颜色测试和控制提供快速有效的方法.图4表2参5(金友)展开更多
A method for determination of lycopene concentration in dog plasma wasestablished. Methods RP-HPLC was used; the mobile phase consisted of methanol-acetonitrile-methylenechloride (40:30:30, V/V) , the wavelength of de...A method for determination of lycopene concentration in dog plasma wasestablished. Methods RP-HPLC was used; the mobile phase consisted of methanol-acetonitrile-methylenechloride (40:30:30, V/V) , the wavelength of detection was 472 nm, the column temperature wasambient temperature, and the flow rate was 1.0 mL·min^(-1). Results The standard curve was linearin the range from 0.012 4 to 0.496 μg·mL^(-1) with r=0.9992. The average extraction recovery was97.6% +-4.2%. The intra-day and inter-day RSD were 1.52% -4.95% and 2.31% -7.38%, respectively.Conclusion This method is sensitive, rapid, reproducible, and of good selectivity for the analysisof lycopene in dog plasma.展开更多
A novel opening loop structure of fiber Bragg grating is proposed. From the analysis of the strain distribution at the side of the opening loop we found that the structure can be used as a new setup to linearly tune t...A novel opening loop structure of fiber Bragg grating is proposed. From the analysis of the strain distribution at the side of the opening loop we found that the structure can be used as a new setup to linearly tune the central wavelength of the fiber Bragg gating. The setup is an uniform fiber Bragg grating bonded to the side of a beam which can produce an uniform strain. The experimental results show that the wavelength range of linear tuning is about 5.0 nm,the sensitivity is about 3. ]8 nm/N and the linearity is up to 0. 9988.The largest tuning range of the setup is about 11. 0 nm while the linearity is 0. 9941 in the ranae of 0 and 11. 0 nm. ExPerimental results are in good agreement with our theoretical analysis.展开更多
The general principles and realizations of FBG wavelength tuning with elastic beams are proposed and demonstrated.Theories and experiments show that when displacement at the center point of simple beams,deflection of ...The general principles and realizations of FBG wavelength tuning with elastic beams are proposed and demonstrated.Theories and experiments show that when displacement at the center point of simple beams,deflection of cantilever beams and torsion strain of torsion beams are relatively small,Bragg wavelength shifts of sensing FBGs have linear relationship with applied external stress,lateral displacement,torque and torsional angles,respectively.The experimental results indicate that the curvature sensitivity of the simple beam is 1.65 nm/m-1,the displacement sensitivity of the equivalent-strain cantilever beam is 4.4 cm/kg and the torque and torsional angle sensitivities of the torsion beam are 6.27 nm/Nm and 0.086 7 nm/degree,respectively.展开更多
文摘O432.3 99042118计算机灵敏波带法测色研究=Study of surface colormeasurements by sensitive wave bandmethod[刊,中]/王守权,张薇(长春邮电学院通信工程系.吉林,长春(130012))//吉林大学.自然科学学报.—1998,(4).—63-65根据色度学理论寻求灵敏波长的个数和确切位置,从而建立灵敏波带法计算机测色机制,为颜色测试和控制提供快速有效的方法.图4表2参5(金友)
文摘A method for determination of lycopene concentration in dog plasma wasestablished. Methods RP-HPLC was used; the mobile phase consisted of methanol-acetonitrile-methylenechloride (40:30:30, V/V) , the wavelength of detection was 472 nm, the column temperature wasambient temperature, and the flow rate was 1.0 mL·min^(-1). Results The standard curve was linearin the range from 0.012 4 to 0.496 μg·mL^(-1) with r=0.9992. The average extraction recovery was97.6% +-4.2%. The intra-day and inter-day RSD were 1.52% -4.95% and 2.31% -7.38%, respectively.Conclusion This method is sensitive, rapid, reproducible, and of good selectivity for the analysisof lycopene in dog plasma.
基金Supported by the National 863 High Technology Project underGrant No.2002AA313110 ,the Science and Technology Innova-tion Foundation,the Students Innovation Foundation of NankaiUniversity,P.R.China .
文摘A novel opening loop structure of fiber Bragg grating is proposed. From the analysis of the strain distribution at the side of the opening loop we found that the structure can be used as a new setup to linearly tune the central wavelength of the fiber Bragg gating. The setup is an uniform fiber Bragg grating bonded to the side of a beam which can produce an uniform strain. The experimental results show that the wavelength range of linear tuning is about 5.0 nm,the sensitivity is about 3. ]8 nm/N and the linearity is up to 0. 9988.The largest tuning range of the setup is about 11. 0 nm while the linearity is 0. 9941 in the ranae of 0 and 11. 0 nm. ExPerimental results are in good agreement with our theoretical analysis.
文摘The general principles and realizations of FBG wavelength tuning with elastic beams are proposed and demonstrated.Theories and experiments show that when displacement at the center point of simple beams,deflection of cantilever beams and torsion strain of torsion beams are relatively small,Bragg wavelength shifts of sensing FBGs have linear relationship with applied external stress,lateral displacement,torque and torsional angles,respectively.The experimental results indicate that the curvature sensitivity of the simple beam is 1.65 nm/m-1,the displacement sensitivity of the equivalent-strain cantilever beam is 4.4 cm/kg and the torque and torsional angle sensitivities of the torsion beam are 6.27 nm/Nm and 0.086 7 nm/degree,respectively.
