Aqueous solution of naproxen sodium has characteristic absorption peak at wave length 266nm, which was discovered in this experiment. Assay of naproxen sodium as the concentration of naproxen sodium range from 10μg/ml to 50μg/ml in agreement with the law of Beer. The correlation coefficient is 0.9996(γ=0.9996, P<0.01).
Chlorhexidine content in solution was measured by high performance liquid chromatography at 253 nm wavelength at which chlorhexidine has characteristic absorption peak and there is minimal interference For the solution containing chlorhexidine ≤0 4222 mg/ml, the deviation of measured results was ≤1 4%
The obtained microcystin was MCRR with purity >95% and its UV absorption spectra had characteristic absorption at 239nm. Its molecular composition was cyclo-(Ala-Arg-MeAsp-Arg-Adda-Glu-Mdha), and molecular weight was 1037.
Results Acoustic neuroma,meningioma and trigeminalneuroma were the most common tumors in the area of the pontocerebellar angle. Most tumors in this area had characteristic MRI findings. The accuracy of localized and qualitative diagnosis before the operation was 96.9%and 94.1%,respectively.
Theorem 3 Let N be a normal subgroup of the solvable group G. If every character of Irr(G｜N) has a distinct degree, then one of the followings occurs. (i) N has a characteristic series, N=N 0>N 1>…>N k-1 >N k=1 such that N i+1 is normal p complement of N i;
The chlorhexidine content was measuredby ultraviolet spectrophotometry at the wavelengthof 258 nm where there is a characteristic absorptionpeak of chlorhexidine、As compared with perchloricacid titration measurement, the error in measuringthe diluted solution containing≤210 ug ofchlorhexidine was 0.9%～4.7%.
This paper mention a method which utinize xenon ion laser to stimulate the malignant tumors of oral cavity to produce autofluorescence and finally record a photospectrum. The photospectrum of malignant tumors show a characteristic wave at 630 nm and/or 690 nm.
1,2-Diamino-3,5-dibromobenzene is used for thecolorimetric determination of selenium in artificially cultured seleniumyeast. It reacts with selenium(IV)ion to produce dibromopiaselenole,which has a characteristic absorption peak at 365nm.
Conclusion:Intracranial lipomas is often located in the midline and the paramidline region. The lesions were showed characteristic appearence on CT and MRI scan,and usually associated with solitary or multiple intracranial anomalies. The diagnosis can be done by CT and MRI.
During the experiment, the heart rate and blood pressure showed characteristic changes due to increased ICP.
She died 10 years after the onset of the illness and at autopsy the brain showed characteristic changes of progressive multifocal leukoencephalopathy (PML) with the presence of the JC virus confirmed by in situ hybridisation.
After gadolinium administration seven lesions showed characteristic rim enhancement while three showed minimal enhancement.
The clonal chromosomal aberrations were found in 70 cases, of them 46 cases showed characteristic changes including t(9; 22), t(4; 11), t(11; 14), t(8; 12), t(8; 14), 6q-, 9p- and t(15; 17), t(8; 21), inv(16), etc.
Part of the cancer cells showed characteristic morphological changes of apoptosis under fluorescence and electron microscopes, and the rate of apoptosis was 21.5%-33.5%.