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Optical Studies on the Yellowing of Silk (1)
Get PDFThe author has studied the yellowing of silk by exposing it to light. Measurement has mainly been carried out by the colorimetrical method. It has been proved that the coloring of silk by light lies between the coloring of tryptophane and that of tyrosine and in the early stage of exposure it is closer to the former, while it is closer to the latter in the end. The author has also obtained the empirical formula referring to the velocity of the yellowing
A STUDY ON THE SPECTRAL TRANSMITTANCE OF AgI COLLOIDAL SOLUTION COAGULATED BY SURFACE ACTIVE AGENT
Get PDFThe author has studied, analyzing the spectral transmittance curves obtained by a double beam type spectrophotometer and applying the method of colorimetries, on the coagulation of AgI sol by Laurylpyridinium-bromide, a cationic surfacant. Next, the experimental formula concerning the velocity of coagulation and that of 1/τλo² = aλo - b (τ:turbidity, λo:wavelength in water) have been obtained with satisfactory accuracy, where radii R of the particles are also calculated from constant a or b of the above equation in the range of 34. 6 ～ 73. 0 nm
AN OPTICAL STUDY ON THE AGEING OF SILVER IODIDE COLLOIDAL SOLUTION
Get PDFThe author has studied, by analyzing the spectral transmittance curves obtained by Beckman type photometer, on the difference between the turbidity of AgI sol owing to ageing and the turbidity owing to the increase of concentration. Measurement in this study has mainly been carried out by colorimetrical method. In the next place, the experimental formula concerning the velocity of ageing and that of 1/τλ²o = aλo - b (τ: turbidity, λo: wavelength in water, a, b: constants.) have been obtained with satisfactory accuracy, where radii R(nm) of the particles have been calculated from a or b of the above formula in the range of 26～70 (nm), and the R agree with the results from Rayleigh\u27s formula in case of less than 40 nm
Optical Studies on the Yellowing of Silk (1)
No full textThe author has studied the yellowing of silk by exposing it to light. Measurement has mainly been carried out by the colorimetrical method. It has been proved that the coloring of silk by light lies between the coloring of tryptophane and that of tyrosine and in the early stage of exposure it is closer to the former, while it is closer to the latter in the end. The author has also obtained the empirical formula referring to the velocity of the yellowing.Articleapplication/pdf信州大学理学部紀要 1(2): 71-78(1967)departmental bulletin pape
A STUDY ON THE SPECTRAL TRANSMITTANCE OF AgI COLLOIDAL SOLUTION COAGULATED BY SURFACE ACTIVE AGENT
No full textThe author has studied, analyzing the spectral transmittance curves obtained by a double beam type spectrophotometer and applying the method of colorimetries, on the coagulation of AgI sol by Laurylpyridinium-bromide, a cationic surfacant. Next, the experimental formula concerning the velocity of coagulation and that of 1/τλo² = aλo - b (τ:turbidity, λo:wavelength in water) have been obtained with satisfactory accuracy, where radii R of the particles are also calculated from constant a or b of the above equation in the range of 34. 6 ～ 73. 0 nm,Articleapplication/pdf信州大学教養部紀要. 第二部, 自然科学 9: 11-26(1975)departmental bulletin pape
A Model Experiment Referring to the Cause of the Formation of the Turbid Layer in the Lake
Get PDFArticle信州大学文理学部紀要 5: 1-10(1955)departmental bulletin pape
AN OPTICAL STUDY ON THE AGEING OF SILVER IODIDE COLLOIDAL SOLUTION
No full textThe author has studied, by analyzing the spectral transmittance curves obtained by Beckman type photometer, on the difference between the turbidity of AgI sol owing to ageing and the turbidity owing to the increase of concentration. Measurement in this study has mainly been carried out by colorimetrical method. In the next place, the experimental formula concerning the velocity of ageing and that of 1/τλ²o = aλo - b (τ: turbidity, λo: wavelength in water, a, b: constants.) have been obtained with satisfactory accuracy, where radii R(nm) of the particles have been calculated from a or b of the above formula in the range of 26～70 (nm), and the R agree with the results from Rayleigh's formula in case of less than 40 nm.Articleapplication/pdf信州大学教養部紀要. 第二部, 自然科学 7: 9-21(1973)departmental bulletin pape
An Optical Study on the Coagulation and Peptization of Silver Iodide Colloidal Solutions by Surface Active Agent
Get PDFArticle信州大学文理学部紀要 7: 1-16(1957)departmental bulletin pape
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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