bluuebunny/crossref_metadata_2025_split huggingface dataset:
Studies on the Oiliness of Liquids. VII. Measurements of the Static Friction Coefficients of Esters, Ketones, and Glycerine
Authors: Isemura Toshizo 
Published: July 2006

Abstract
(1) The static friction coefficients have been measured when esters, ketones and glycerine are placed on the glass surface as lubricants.
(2) The friction coefficients of these liquids are very high.
(3) Some considerations have been made on the high friction coefficients of these liquids.
(4) The friction coefficients of water and methyl alcohol have been revised.
The Photochemical Dehydrogenation of Ergosterol and 7-Dehydrocholesterol
Authors: Ando Toshio 
Published: July 2006

Abstract
Ergopinacone and 7-dehydrocholesterol-pinacone have been prepared by two different methods, viz., the boiling method and the carbon dioxide method. The products obtained by the two methods as well as diacetates and dibenzoates derived from them have been compared. It has been indicated that the two methods yield the same products.
In conclusion the author wishes to express his hearty thanks to Prof. Y. Urushibara for his kind guidance and encouragement. He acknowledges also his indebtedness to Dr. K. Yamasaki for his advice and kindness in taking absorption spectra, and to Mr. Yasohachi Yamaguchi and to Ozi Seisi Co. for generous help.
Studies on Luminescent Materials. Part 1. Theory of Zinc Sulphide-copper Crystal Phosphor
Authors: Uehara Yasuo 
Published: July 2006

Abstract
In this paper, the author has attempted to interpret the properties of the zinc sulphide-copper crystal phosphor from the view point of zone-theory.
(1) It was pointed out that the activation centre of zinc sulphide–copper phosphor consists of Cu ion surrounded by the ions of Zn and S.
(2) The transition of electron of Cu+ ion from the ground state 1S0 to the conduction band is responsible for the excitation bands of fluorescence.
(3) The two fluorescence bands with maxima at 5250 Å and 4550 Å in this phosphor may be correlated with the electronic transitions
^3D_3 & →^1S_0 (α-band),
^3D_2 & →^1S_0 (β-band),
(4) If the electron in the excited states of Cu+ ion absorbs heat energy, it makes a transition to the conduction band and be free to move in the phosphor, then the phosphor will show a phenomenon of the photoconduction.
The Effect of Gases upon the Catalytic Decomposition of Oxalic Acid by Colloidal Platinum
Authors: Sano Isamu 
Published: July 2006

Abstract
(1) The influences of gases such as oxygen, nitrogen as well as air under reduced pressure upon the decomposition of aqueous solution of oxalic acid (0.05 n) were, in the existence of colloidal platinum obtained from colloidal platinum-carbonyl through dialysis and under diffused daylight, examined at 50.0°C.
(2) Oxygen alone has a marked effect in accelerating the decomposition, but the two others none.
(3) This gives support to the mechanism of reaction previously discussed.
Studies on Luminescent Materials. Part 2. On the Fluores-cence Spectra of Zinc Sulphide-Copper Crystalphosphors at −185°, 20°, and 150°C
Authors: Uehara Yasuo 
Published: July 2006

Abstract
(1) Energy distribution curves of the fluorescence spectra of pure ZnS and ZnS/Cu phosphors were measured at −185°, 20°, and 150°C.
(2) Four fluorescence bands were observed in the pure ZnS phosphors containing no activator and no flux. It was pointed out that these four fluorescence bands may be correlated with the transitions
&^1P_1→^1S_0=4670Å=η
&^3P_2→^1S_0=4670Å=ζ
&^3P_1→^1S_0=5085Å=ε
&^3P_0→^1S_0=5455Å=γ
of the electron of the Zn atom in the activation centre.
(3) In the ZnS phosphors activated by Cu, three bands α, β and β1 were observed. These three fluorescence bands may be correlated with the transitions
&^3D_3→^1S_0=5260Å=α
&^3D_2→^1S_0=4410Å=β
&^3D_1→^1S_0=4245Å=β_1
of the electron of the cu+ ion in the activation centre.
(4) The effect of the temperature and of the amount of the activator, and flux on the fluorescence spectra were discussed.
Absorption Spectra of Co-ordination Compounds. IV. Ethylenediamine Cobaltic Complexes
Authors: Kuroya Hisao , Tsuchida Ryutaro 
Published: July 2006

Abstract
1. Absorption spectra of a number of ethylenediamine cobaltic complex salts have been observed. Generally speaking, their absorption bands, especially the second, are more hypsochromic than those of the corresponding ammine salts.
2. The results have proved that the author’s hypothesis on the absorption spectra holds good for the ethylenediamine complex salts.
3. Examples of the third absorption bands have been found in the diethylenediamine cobaltic complexes of known configurations.
4. A new method of separating [Co en3]3+ and [Co en2Cl2(6)(1)]+ has been devised.
On the Nature of Foam. VII. Foam Formation of Mixed Aqueous Solution of Saponin and Ethyl Alcohol
Authors: Sasaki Tunetaka 
Published: July 2006

Abstract
(1) The foam formation of mixed aqueous solution containing saponin in a constant amount and ethyl alcohol in varying concentration was studied. Life of the foam produced in aqueous solutions of saponin (concentrations being 0.009085 g./l. and 0.001820 g./l.) is remarkably increased in length by the addition of alcohol within the region of concentration covering over from 0.0026 mol/l. to 0.77 mol/l. Addition of alcohol in concentration exceeding 0.77 mol/l. again renders the foam unstable.
(2) Attempts were made to explain the mechanism of foam formation relating to the above phenomena.
(3) Foam and hydrosol were compared with respect to their properties as a disperse system, from which some resemblances as well as differences were pointed out between them.
Polymerisation of Tung Oil. III. Molecular Weights of Tung Oil and its Polymerides
Authors: Tatimori Monzi 
Published: July 2006

Abstract
The molecular weights of polymerised tung oils were measured in the solution of benezne, camphor, nitrobenzene, bromoform, ethylene bromide by the cryoscopic method.
By the camphor method reasonable molecular weights were obtained. But in benzene the molecular weight decreases rapidly with the increasing concentration. In nitrobenzene, ethylene bromide, bromoform the molecular weight behaves as linear function of concentration and the rate of decrease in molecular weight with increasing concentration is not so eminent as in benzene.
On the contrary in cyclohexane the molecular weight increases with the increasing concentration and reasonable values are obtained by extrapolation. The abnormality in benzene may be considered as the solvation action.
On the Metallo-Orgatric Compounds. X. Electroisomerism in Triethyltin
Authors: Harada Taichi 
Published: July 2006

Abstract
The free triethyltin groups prepared by two methods, namely, the reduction of (C2H5)3SnX and the oxidation of (C2H5)2SnNa or ((C2H5)2SnNa)2 appear to be identical. However, their rate of oxidation appears to differs markedly from one another. It is assumed that this is due to their electronic constitutional difference (electroisomeric) or in the methods of preparation.
Studies on the Organic Molecular Compounds. Part I. The Influence of Nitro Radicals and Second Substitution Radicals on the Formation of the Aromatic-Nitroaromatic Molecular Compounds. I
Authors: Shinomiya Chiro 
Published: July 2006

Abstract
The molecular compound of naphthalene. and naphthols with mono-, di-, tri-, and tetra-nitro aromatic compounds are systematically compared, and the compound formation discussed with solid—liquid phase diagrams.
On the Catalytic Action of Japanese Acid Earth. XII. The Relation between the Catalytic Activity and Adsorption. II. The Adsorption Isotherms of Water and Acetonitrile for the Earth
Authors: Ishimura Koshiro 
Published: July 2006

Abstract
Adsorption isotherms of water and acetonitrile for Japanese acid earth have been studied by using a McBain’s sorption balance. A marked hysteresis phenomenon has been observed in both cases. It has been found that as the process of adsorption and desorption is repeated, the lower region of the hysteresis area tends to be reversible in the case of water, while in the case of acetonitrile hysteresis covers the whole range of the isotherms even after the fourth series of adsorption and desorption. In both cases the upper region of the hysteresis area remains unchanged. The first type of the hysteresis, which tends to disappear, has been explained as due to the existence of the adsorbed foreign substances on the surface of the earth, while the second type is associated with capillary condensation process. The difference between the behaviours of water and acetonitrile can be attributed to the difference of affinity of the two substances to the earth. The total volume of pores of the earth has been calculated from the adsorbed amounts of the two substances and found about 40 c.c. for 100 g. earth.
The Formation of Polyhydroxy-dialdehydes. I. Xylo-trihydroxy-glutaric Dialdehyde and its Derivatives
Authors: Iwadare Koichi 
Published: July 2006

Abstract
By the oxidation of 1,2-monoacetone-d-glucofuranose with lead tetraacetate, 1,2-monoacetone-d-xylo-trihydroxy-glutaric dialdehyde was obtained, which distils at 132-136° at 0.01-0.02 mm. pressure, and has specific rotatory power, [α]D16, of 20°±3° in alcohol. Its monophenylhydrazone melts at 140.5–141° and has specific rotatory power, [α]D10, of −41°±1° in chloroform, and its monosemicarbazone melts at 209.5°. 1,2-Monoacetone-d-xylo-trihydroxy-glutaric dialdehyde was hydrolized to xylo-trihydroxy-glutaric dialdehyde and bis-phenylhydrazone and bis-p-nitrophenyl-hydrazone of the latter were obtained. Melting points of them are 126.5–127.5° and 191–192° respectively. 1,2-Monoacetone-d-xylo-trihydroxy-glutaric dialdehyde and xylo-trihydroxy-glutaric dialdehyde were oxidized by bromine in presence of strontium carbonate, and strontium 1,2-monoacetone-d-xyluronate and strontium xylo-trihydroxy-glutarate were obtained respectively.
Polymerisation of Tung Oil. V. Effects of Treated Fatty Oils upon the Gelation of Tung Oil
Authors: Tatimori Monzi 
Published: July 2006

Abstract
1. The gelation—preventing actions of oxidised and polymerised linseed oil were measured. The value of x∞ increases with the increasing degree of cooking and the value for oxidised oils is always greater than that for polymerised oils of the same cooking degree.
2. Perilla oil was oxidised at 100°C., 200°C. and 300°C. to the degrees of iodine values 170, 150, 140 and the effects upon the gelation were meas？red. In the cases of oxidised oil prepared at 300°C. the relation of 1⁄t∼x was linear and the value of x∞ increase according to the increase of cooking degree. In the cases of oxidised at 100°C. and 200°C. curved lines were obtained. This tendency is supposed to be due to the peroxide contained in it.
3. The effect of benzoyl peroxide also was examined. Benzoyl peroxide has a strong gelation accelerating action. The effect of perilla oil added with benzoyl peroxide is similar to that of perilla oil oxidised at low temperature.
4. The gelation—preventing action of brominated oils is very strong and the value of x∞ is less than 4%. Therefore, these substances can be used as a strong gelation—preventing agent.
Studies on the Reactions between Oxides in Solid State at Higher Temperatures. II. The Reaction between Calcium Oxide and Titanium Oxide and the Photo-sensitivity of Calcium Titanate
Authors: Tanaka Yasuo 
Published: July 2006

Abstract
(1) It has been ascertained that there exists only one addition compound, perovskite (CaO·TiO2), in the system CaO and TiO2. As for the unit cell size of pure perovskite, a=7.615Å should be given as correct, which is twice as great as the value hitherto given.
(2) CaO·TiO2 has been proved to form a solid solution with the two components, the range of which spreads approximately from a slight excess of TiO2 to CaO:TiO2=3:2, and in which the lattice constant is enlarged and the crystal form deviates from cubic with the increase of the content of CaO.
(3) At the early stage of the solid reaction of this system, the product is richest in TiO2 within the possible range of the solid solution; the solid solution rich in CaO may be formed gradually when an excess of CaO is present.
(4) It has been concluded that, although there exists a rapid initial reaction, a further reaction is controlled by the diffusion of the two components through the reaction product. The energy of activation of the diffusion process has been calculated as 30.3 kilocalories per mole.
(5) It has been found that the reaction products turn light red by the action of light; some observations thereon have been made.
Studies on the Thermal Diffusion of Solutions. I. Thermal Diffusion Coefficient of Some Inorganic Solutions
Authors: Hirota Kozo 
Published: July 2006

Abstract
(1) It has been shown that the thermal diffusion apparatus of Clusions and Dickel with a comparatively large wall distance is suitable for the determination of the thermal diffusion coefficient of liquid solutions.
(2) The separations of some inorganic solutions (HCl, H2SO4, NaCl, KCl, NH4CI, Na2CO3, Na2SO4, CuSO4 and NaOH) have been carried out.
(3) The observed results have been shown to be in concordance with the theory of Debye and to give reasonable Soret constants if com？ared with those, hitherto, directly measured.
(4) The thermal diffusion (coefficient of each solution has been determined, and from these values the nature of the thermal diffusion has been discussed to some extent.
Hydrocarbons from Carbide (A) IV. Non-Catalytic Polymerization under Ordinary Pressure. Acetylene-Carbide System and General Remarks
Authors: Negishi Ryoji , Kamiike Osamu 
Published: July 2006

Abstract
It has been shown that when acetylene is used as a carrier gas, the percentage of the total liquid products, based on the reacted carbide acetylene (or carbon), increases owing to the polymerization of the carrier gas itself, provided its concentration is sufficiently high. If the concentration is low, the effect of the introduced acetylene appears limited merely to the suppression of the formation of free acetylene.
An explanation for a higher content than in the reacted gas of methane in the effluent gas used for desorption has been given for the acetylene system.
The supplementary data in support and evidence for the reasonableness of the over-all mechanism of nascent acetylene polymerization, which may be written
n(C_2H_2)=(C_2H_2)_n,
have been given.
It has been indicated that the efficacy of the synthesis of hydrocarbon liquids directly from calcium carbide is higher than even the catalytic polymerization, so far reported in literature, of ordinary acetylene.
Determination of the Minute Quantities of Silver in Mineral Waters by the Dithizone Method
Authors: Kuroda Kazuo 
Published: July 2006

Abstract
(1) Volumetric and spectroscopic methods, using dithizone for determining the minute quantities of silver in the mineral waters, were studied.
(2) The amount of silver in mineral springs was estimated by the dithizone method. The occurrence of silver in the hot springs of Sukayu was spectroscopically detected and estimated to be about 10γ per litre. The dithizone method gave 12∼15γ Ag per litre.
The Synthesis of Iso- and Normal Butyl Alcohols in the Presence of Calcium Carbide (B) V. Comparison of the Results in Dry and Liquid Systems
Authors: Negishi Ryoji , Kamiike Osamu 
Published: July 2006

Abstract
The results of autoclave runs IIIA Ser. 100, IIIA Ser. 113 in dry and IVA Ser. 124 carried out in liquid paraffin have been compared and discussed rather quantitatively.
It has been found that the main reactions involving the carbide are the same in the two systems. The differences found are attributable to the accumulation of the heat of reaction, while those among the series of the same system are, in addition, due to such secondary effects as the time of contact and the amount of the carbide present.
From a considerable body of experimental results, it has been indicated that the role of the carbide is to dehydrate the methanol synthesized from carbon monoxide and hydrogen to produce isobutyl alcohol, and with further dehydration of the alcohols, hydrocarbon liquids are produced. Under certain conditions the principal fraction of the carbide acetylene may escape as free or form olefines and yellow powder, with only a slight formation of liquid products.
It has been shown that cracking of the carbide acetylene is avoided at the expense of that of the medium.
The Glow Electrolysis and its Mechanism. II. On the Study of the Formation of Basic Salts
Authors: Yamaguchi Yohei , Muta Akinori 
Published: July 2006

Abstract
(1) It has been said that oxides are formed by the glow-electrolysis of zinc sulphate solution. From the above studies, however, it is known that ZnSO4·3Zn(OH)2 is formed, and the colloidal solution of zinc hydroxide is obtained with very dilute solution, as 8.04×10−6 Mol.
(2) It has been said that oxide or hydroxide is formed in the cupric sulphate solution. From the above researches, however, the basic salt, 2CuSO4·5Cu(OH)2·H2O, is obtained from its concentrated solution of over 0.002 mol., and CuSO4·3Cu(OH)2 is obtained from under 0.002 mol. and colloidal solution of simple hydroxide, CuO·2H2O, is formed with the very dilute solution of 5×10−6 mol./l.
(3) The reason for the abnormally large current efficiency such as about 120% has not been cleared. From the following facts, it is cleared that this is the result of the secondary formation of the basic salt.
(a) The comparison of the ordinary method of formation of the basic salt with its formation by the glow electrolysis.
(b) The agreement between the current efficiency of hydroxide contained in basic salt as a constituent and that of hydroxide produced in a very dilute solution.
(c) The weight of copper anodically dissolved shows the current efficiency of about 100%.
(d) The weight of the basic salt, ZnSO4·3Zn(OH)2-H2O which is formed from ZnO, is the sum of the weight of ZnO taken and the weights of ZnSO4 and water combined.
(4) For the mechanism of the glow-electrolysis, there is no need to consider the effect of heat caused by impacts between electrons and ions, etc., because the green 2CuO·H2O which is obtainable at ordinary tem？erature is formed in a very dilute solution and it changes to black 6CuO·H2O by heating over 77°C.
Studies on the Reactions between Oxides in Solid State at Higher Temperatures III. The Reaction between Magnesium Oxide and Stannic Oxide
Authors: Tanaka Yasuo 
Published: July 2006

Abstract
(1) It has been found that 2MgO·SnO2 is the only stable addition compound which is formed by the solid reaction between MgO and SnO2, and that the compound is soluble in 4n HCl.
(2) While the reaction in dry oxygen begins at about 950°, it takes place more readily in open air, probably, due to the effect of the traces of reducing gases contained in air.
(3) The reaction product seems to exist at first in an amorphous state, and, when the amount of which reaches to a certain value, 2MgO·SnO2 becomes to crystallize out smoothly; the later reaction proceeds by the diffusion of the components through this crystalline layer.
(4) It has been considered that the main part of the reaction is controlled by the diffusion process, and the energy of activation of which has been estimated as about 100 Kilocalories per mole.
(5) An induction period has been observed at the beginning of the reaction, and the energy of activation is very great when compared with those of the reactions hitherto studied.
Synthesis of Tertiary Butyl Alcohol by the Hydration of Isobutylene. III. Separation of Tertiary Butyl Alcohol by the Extraction with Solvents
Authors: Katuno Masaharu 
Published: July 2006

Abstract
1. As another method of the separation of tert-butanol from the absorption product of isobutylene with sulphuric acid, without neutralisation of the acid with alkali, the extraction of tert-butanol with solvents has been investigated. It is necessary to dilute the acid after absorption of isobutylene before extraction. Ethyl ether has been found to be the most suitable solvent for the extraction.
2. tert-Butanol can be extracted almost completely from the acid phase, different from the case of secondary olefines.
3. The absorption of isobutylene with dilute sulphuric acid, in order to extract tert-butsaaol without dilution, has been found very slow even when the acid phase is saturated with Ag2SO4.
On the Dispersion of the Hydroxides of Manganese, Iron, Cobalt and of Copper by Autoclaving in the Presence of Aluminium Hydroxide
Authors: Katsurai Tominosuke 
Published: July 2006

Abstract
The hydroxides of manganese, iron cobalt, nickel, copper and lead show, by autoclaving, more or less dehydrating tendency and undergo contraction of sedimentation volume.
The hydroxides of manganese, iron, cobalt and copper are dispersed by autoclaving in the presence of Al-hydroxide. The sols of the hydroxides of Al∼Co and of Al∼Cu show “schlieren effect”.
Studies on Synthetic Polyamides (III) Syntheses of Some Polyamides
Authors: Hosino Kôhei 
Published: July 2006

Abstract
The syntheses and properties of polyeyclohexylene-1,4-adipamide and polycyclohexylene-5,5-dimethyl-1,3-adipamide and copolymer of hexamethy-lene diamine-adipic acid-ε-caprolactam are descri.
The Quantum-Mechanical Contributions of the Terms Arising from Higher Order Approximations on Gaseous Viscosity and Thermal Conductivity
Authors: Hirota Kozo , Takahashi Akira , Yoshitomi Tatsuya 
Published: July 2006

Abstract
The quantum-mechanical contribution of the terms arising from higher order approximation on viscosity and thermal conductivity has been calculated by use of the rigorous formula of Chapman and Enskog. The contributions are found in both properties to be so slight that it may be negligible with respect to both models adopted (rigid elastic sphere and Slator’s potential).
The Quantum-Mechanical Treatment of Voscosity Coefficient of Helium by Use of a Rigid Sphere Model with Attractive Force
Authors: Hirota Kozo 
Published: July 2006

Abstract
By use of a rigid sphere molecule model with attractive force of inverse cube law the viscosity coefficient of helium was calculated quantummechanically. It was found that the gap hitherto known between theory and experiment has become smaller at low temperatures than in case of no attractive force.
On the Equilibrium of the Radioactive Elements in the Hydrosphere. IV. On the Ratio of Thorium X to Radium in the Hydrosphere
Authors: Kuroda Kazuo , Yokoyama Yuji 
Published: July 2006

Abstract
The thorium X and radium contents of mineral springs of Ikeda and the hot springs of Misasa were estimated. The ratio of thorium X to radium in these springs was considerably larger than that obtained by Kurbatov in Gelesnovdsk. The relation between the ratio of thorium X and radium, and water temperature, radium content, radon content, etc., was quite similar to that found in Masutomi.
The Addition of Hydrogen Bromide to Cinnamic Acid and the Oxygen Effect
Authors: Simamura Osamu , Takahasi Makoto 
Published: July 2006

Abstract
The action of the mixture of hydrogen bromide and oxygen on cinnamic acid in carbon tetrachloride produces ω-bromoacetophenone together with α,β-dibromohydrocinnamic acid. It is concluded that the free radical C6H5\.{C}HCHBrCOOH is formed in the intermediate stage in accord with the expectation from theoretical considerations concerning the stability of radicals. The radical, owing to its stability, does not react with hydrogen bromide to give α-bromohydrocinnamic acid, but reacts, on one hand, with oxygen ultimately to give ω-bromoacetophenone after disrupture of carbon dioxide and, on the other hand, with bromine or hydrogen bromide, as detailed in the text, to give α, β-dibromohydrocinnamic acid.