{"title":"Effects of Reheating on Strength of Glass Fibers","authors":"S. Sakka","doi":"10.2109/jcersj1950.65.739_190","DOIUrl":"https://doi.org/10.2109/jcersj1950.65.739_190","url":null,"abstract":"Glass fibers of 12 and 22μ in diameter were drawn from the glass melt, the temperature of which were kept at 1170°C during the fiber forming process. The composition of the glass used was as follows: SiO2 67, B2O3 12, BaO 2, K2O 9, Na2O 9.5, Al2O3 0.5% (in weight).The glass fibers were repeated at different temperatures between the room temperature and the softening temperature of the glass, and then were etched with hydrofluoric acid. The tensile strength of the reheated fibers was measured before and after the etching.It was found that, although the tensile strength of fibers decreased by reheating, it regained its original value when its thin surface layer was removed by hydrofluoric acid.","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"26 1","pages":"316-320"},"PeriodicalIF":0.0,"publicationDate":"1956-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83165353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Electron Microscopic Study on the Suspensoid for the Nephelometry of Sulfate Ion","authors":"Kazuyoshi Takiyama, E. Suito","doi":"10.2116/BUNSEKIKAGAKU.3.291","DOIUrl":"https://doi.org/10.2116/BUNSEKIKAGAKU.3.291","url":null,"abstract":"The electron microscopic observation of suspended particles of barium sulfate revealed that the nephelometric method of the estimation of sulfate ion in water as barium sulfate gives different shape and size by the least change of concentration of sulfate ion. The authors obtained dendritic suspended particles of 0.6 × 0.15μ in size by the formation of the suspension in 50% alcohol and the suspended particles are uniform in shape and size within the limit of concentration of sulfate ion present in natural water. By the use of this method the error of estimation is minimized within several percent. The data of estimation by this nephelometry and by the gravimetric method were discussed.","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"42 1","pages":"143-148"},"PeriodicalIF":0.0,"publicationDate":"1954-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73928033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of Vanadium Oxide on the Strength of Adherence of Heat-Resisting Enamel Applied on Nickel-Chrome Stainless Steel","authors":"M. Tashiro, S. Sakka, H. Teranishi","doi":"10.2109/JCERSJ1950.61.689_537","DOIUrl":"https://doi.org/10.2109/JCERSJ1950.61.689_537","url":null,"abstract":"","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"17 1","pages":"375-377"},"PeriodicalIF":0.0,"publicationDate":"1953-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86963321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Molecular Weight of Polyoxyethylene Glycols and Their Derivatives. (I) : Cryoscopic Measurements and Solvent Effects","authors":"Rempei Goto, N. Koizumi, N. Hayama, T. Sugano","doi":"10.1246/nikkashi1948.74.994","DOIUrl":"https://doi.org/10.1246/nikkashi1948.74.994","url":null,"abstract":"Molecular Weight of Polyoxyethylene Glycols and Their Derivatives. (I) : Cryoscopic Measurements and Solvent Effects Author(s) Goto, Rempei; Koizumi, Naokazu; Hayama, Naomi; Sugano, Takeo Citation Bulletin of the Institute for Chemical Research, Kyoto University (1953), 31(4): 285-294 Issue Date 1953-07-30 URL http://hdl.handle.net/2433/75342 Right Type Departmental Bulletin Paper Textversion publisher","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"23 1","pages":"285-294"},"PeriodicalIF":0.0,"publicationDate":"1953-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78502509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Limit of Desulphurization of Liquid Pig Iron of Fe-C-S System with Solid Lime or Calcium Carbide","authors":"H. Sawamura","doi":"10.2355/TETSUTOHAGANE1915.39.1_17","DOIUrl":"https://doi.org/10.2355/TETSUTOHAGANE1915.39.1_17","url":null,"abstract":"","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"102 1","pages":"92-101"},"PeriodicalIF":0.0,"publicationDate":"1953-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79518281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the Diffuse Scattering of X-Rays by a Partially Ordered Crystal","authors":"T. Matsubara","doi":"10.5940/JCRSJ1940.5.102","DOIUrl":"https://doi.org/10.5940/JCRSJ1940.5.102","url":null,"abstract":"A general theory of the diffraction phenomena of X-rays by a crystal having irregularities of its atomic arrangements has been developed. First, the intensity formula was written as a sum of three terms, havingg distinct meanings : the first term represents a normal Laue pattern, the second a diffuse pattern similar to that due to a gas, and the third an anomalous Laue pattern. The third term is that which we are most interested in, and is due to the correlations between the irregularities possessed by any two lattice points. It is a function J (b) of the reciprocal lattice vector b, being given by equation (2.8) . It can be concluded that the weight of the scattering power for it is in general concentrated near the reciprocal lattice points, so that it gives a diffuse pattern lying near the normal Laue spots. Explicit calculation of J (b) was carried out for two cases: (1) the irregularities are due to lattice vibrations (obtaining Waller's formula in a more exact form) and (2) they are due to the order-disorder arrangements of the atoms in an alloy of, the type AB with the simple cubic structure. In the second case, a general formula was first set up, and then Zernike's theory of the propagation of orders was. applied to represent it in a more closed form. Some aspects of the intensity of the anomalous scattering were discussed in connection with the change of the degree of orders.","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"282 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1949-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86579633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}