目的:建立红外光谱法对医用脱脂棉、纱布中非法添加的化学合成纤维进行快速鉴别。方法:采用傅里叶变换衰减全反射(attenuated total reflection,ATR)红外光谱法,取表面清洁平整的样品,将其压紧在ATR附件晶体上,直接绘制光谱,与对照品图...目的:建立红外光谱法对医用脱脂棉、纱布中非法添加的化学合成纤维进行快速鉴别。方法:采用傅里叶变换衰减全反射(attenuated total reflection,ATR)红外光谱法,取表面清洁平整的样品,将其压紧在ATR附件晶体上,直接绘制光谱,与对照品图谱进行比对,鉴别样品中纤维的类别。结果:检测的30批医用脱脂棉及30批医用纱布中,有26%的医用脱脂棉发现少量的孤立外来纤维,有40%的医用纱布掺杂了涤纶,其掺杂量为2%~19%。结论:该方法操作简便、快速、高效准确,可用于对医用脱脂棉、纱布中非法添加化学合成纤维的鉴别。展开更多
The quantum vibrational energy-spectra including high excited states of the protein molecules have been calculated by new theory of bio-energy transport along the protein molecules and its dynamic equation, discrete n...The quantum vibrational energy-spectra including high excited states of the protein molecules have been calculated by new theory of bio-energy transport along the protein molecules and its dynamic equation, discrete nonlinear Schrodinger equation, appropriate to the protein molecules on the basis of the level of molecular structure. This energy-spectra obtained are basically consistent with the experimental values by infrared absorption and radiated measurement of person’s hands and laser-Raman spectrum from metabolically active E.Coli.. From this energy-spectra we know that the infrared lights with (1-3)x1000nm and (5-7)x1000nm wavelength can be absorbed by the protein molecules in the living systems. In accordance with the non-linear theory of the bio-energy transport we know that the energy of the infrared light absorbed by the proteins can result in vibrations of amide-I in amino acids and can facilitate the bio-energy transport along the protein molecular chains from one place to other for the growth of living bodies. This processe is non-thermal. This is just non-thermal effect of the infrared lights. According to the mechanism we explained further the medical functions of the infrared lights absorbed.展开更多
Reconstruction of absorption coefficient μa and scattering coefficient μs is very important for applications of diffuse optical tomography and near infrared spectroscopy. Aiming at the early cancer detection of cerv...Reconstruction of absorption coefficient μa and scattering coefficient μs is very important for applications of diffuse optical tomography and near infrared spectroscopy. Aiming at the early cancer detection of cervix and stomach, we present a fast inverse Monte-Carlo scheme for extracting μa and μs of a tubular tissue from the measurement on frequency domain. Results show that the computation time for reconstructing one set of μa and μs is less than 1 min and the relative errors in reconstruction are less than ±10% for the optical properties of normal cervical tissue and precancerous lesions.展开更多
文摘目的:建立红外光谱法对医用脱脂棉、纱布中非法添加的化学合成纤维进行快速鉴别。方法:采用傅里叶变换衰减全反射(attenuated total reflection,ATR)红外光谱法,取表面清洁平整的样品,将其压紧在ATR附件晶体上,直接绘制光谱,与对照品图谱进行比对,鉴别样品中纤维的类别。结果:检测的30批医用脱脂棉及30批医用纱布中,有26%的医用脱脂棉发现少量的孤立外来纤维,有40%的医用纱布掺杂了涤纶,其掺杂量为2%~19%。结论:该方法操作简便、快速、高效准确,可用于对医用脱脂棉、纱布中非法添加化学合成纤维的鉴别。
基金Itis supported by the National Nature Science Foundation of China (No.199740 34 )
文摘The quantum vibrational energy-spectra including high excited states of the protein molecules have been calculated by new theory of bio-energy transport along the protein molecules and its dynamic equation, discrete nonlinear Schrodinger equation, appropriate to the protein molecules on the basis of the level of molecular structure. This energy-spectra obtained are basically consistent with the experimental values by infrared absorption and radiated measurement of person’s hands and laser-Raman spectrum from metabolically active E.Coli.. From this energy-spectra we know that the infrared lights with (1-3)x1000nm and (5-7)x1000nm wavelength can be absorbed by the protein molecules in the living systems. In accordance with the non-linear theory of the bio-energy transport we know that the energy of the infrared light absorbed by the proteins can result in vibrations of amide-I in amino acids and can facilitate the bio-energy transport along the protein molecular chains from one place to other for the growth of living bodies. This processe is non-thermal. This is just non-thermal effect of the infrared lights. According to the mechanism we explained further the medical functions of the infrared lights absorbed.
基金supported by the National Natural Science Foundation of China(No.60578008 and 60678089)the National Basic Research Program of China(No.2006CB705700)
文摘Reconstruction of absorption coefficient μa and scattering coefficient μs is very important for applications of diffuse optical tomography and near infrared spectroscopy. Aiming at the early cancer detection of cervix and stomach, we present a fast inverse Monte-Carlo scheme for extracting μa and μs of a tubular tissue from the measurement on frequency domain. Results show that the computation time for reconstructing one set of μa and μs is less than 1 min and the relative errors in reconstruction are less than ±10% for the optical properties of normal cervical tissue and precancerous lesions.
