[Raman spectra of monkey cerebral cortex tissue].

Monkey cerebral cortex, an important part in the brain to control action and thought activities, is mainly composed of grey matter and nerve cell. In the present paper, the in situ Raman spectra of the cerebral cortex of the birth, teenage and aged monkeys were achieved for the first time. The results show that the Raman spectra for the different age monkey cerebral cortex exhibit most obvious changes in the regions of 1000-1400 and 2800-3000 cm(-1).

[Study on crystal chemistry and spectra of feldspar from Zhoukoudian granodiorite].

The chemical composition and spectra characteristic of feldspar from Zhoukoudian granodiorite were systematically analyzed. Based on the field work, some feldspar samples were selected for crystal chemistry and structure analysis through EMPA, IR, LRM and XRD. The compositions of the feldspar range between Ab (85.

[Raman spectroscopic investigation on the interactions between liver Cancer cells (SMMC-7721) and fufang Luxiancao particles].

Luxiancao is a new medicine for liver cancer, and is purely natural botanical It has good curative effects and few side effects. The curative mechanism of Luxiancao is unknown. In the present paper, the authors used a 514.

[Micro-Raman spectra for gastritis and gastric ulcer tissues].

Micro-Raman spectroscopy was employed to identify gastritis tissues and gastric ulcer tissues. The primary spectral differences between the two types of samples include, for gastric ulcer tissues, (1) the intensity of the peak at 781 cm(-1) ascribed to cytosine decreases, while the peaks ascribed to adenine and thymine respectively at 793 and 823 cm(-1) become stronger; (2) the bands of amide I and amide III at 1654 and 1320-1270 cm(-1) respectively, characteristic of alpha-helix structural protein, lose their intensities, and the tryptophan band at 1332 cm(-1) and phenylalanine band at 1003 cm(-1) reduced significantly, while the tryptophan marker at 1554 cm(-1) up shiftes to 1556 cm(-1) with increasing intensity; (3) a blue shift of 1073 cm(-1) line, the characteristic Raman band of lipid, and a reduction in the ratio of 1303 cm(-1) assigned to in-phase CH2 twisting motion to 1268 cm(-1) from =CH in-plane deformation were observed; (4) statistic analysis shows that the ratio of Raman intensities at bands 1449 cm(-1) originating from CH2 group to 1660 cm(-1) from amide I provides a promising standard to distinguish the two tissues.

[Raman spectroscopic study of human serum albumin interacting with 3-picolylamine].

Raman spectra of human serum albumin (HSA) and HSA-3-picolylamine complex were obtained. The spectra indicate the configuration and structural transformations of HSA. The results show that the secondary structure is main alpha-helix, and the binding of 3-picolylamine doesn't change the secondary structure.