bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Study of the Interaction between the Stearic Acid Monolayer and the Calcium Ions by the Radiotracer Method
Authors: Matsubara Akira , Matuura Ryohei , Kimizuka Hideo 
Published: July 2006

Abstract
Direct measurement by the radiotracer method has been carried out in order to determine the surface excess of calcium on the stearic acid monolayer. It did not provoke any disturbance in the monolayer, such as “skimming off” or “building up”. At higher pH values the stearic acid monolayer spread on a calcium chloride solution shows a very remarkable inhomogeneity. It has been pointed out that this inhomogeneity must be taken into consideration in determining the composition of the monolayer.
The mixed monolayer of stearic acid and calcium stearate satisfies the equation derived by assuming this monolayer to be a mixture not athermal.
Electron Paramagnetic Resonance Absorption of Chromium Ions Dispersed on Silica-alumina. I. The Influence of Chemical Constitution of the Supporting Materials on the Dispersed State
Authors: Matsumoto Akira , Tanaka Hazime , Goto Nobuhisa 
Published: July 2006

Abstract
Chromic anhydride has been dispersed on several supporting materials of silica-alumina of different compositions, and the so-called γ-line in the EPR of these samples has been observed. When the temperature of heat treatment rises, the intensity of this absorption becomes strong, but after reaching a maximum value it decreases again. The chemical composition of the base materials remarkably influences the behavior of the absorption. The variations in water soluble chromium and oxidation number show corresponding results. However, γ-absorption sites may be distributed in the water-insoluble part of chromium as well as in the water-soluble part. The ratio between them depends on the base materials.
Under the assumption of g anisotropy, the observed absorption lines have been compared with the calculated curves and the half-width at the half power of the absorption with the crystallite in these samples. From these results and from the differences in behavior, the states of chromium ions in various samples have been compared. By comparing the present results with those of other investigators, it has been concluded that, on pure silica gel, chromia is dispersed mainly in the form of thin-layer clusters and that this dispersion gives the characteristic of this matter. On the contrary, an alumina-rich base produces a more dispersive state of chromium and the fixation of chromium rapidly becomes stronger with the heat treatment. The influence of the supporting material on dispersed chromium becomes great and the characteristics are affected by this fact. These differences may be caused principally by the differences among these materials in thermal stability and in the compatibility with chromia.
Vibration-Rotation Spectra, the Coriolis Coupling Constants and the Intramolecular Fore Field of Symmetric Top Molecules. II. Analysis of the Overtones and Combination Tones of Methyl Bromide
Authors: Morino Yonezo , Nakamura Junko , Yamamoto Seiya 
Published: July 2006

Abstract
The infrared spectra of most of the overtones and combination tones of methyl bromide have been obtained. In the perpendicular band, the rotational fine structures have been observed. The values of the Coriolis coupling constants obtained from the analysis of the rotational fine structures are consistent with those obtained from the analysis of the fundamentals. It has been seen that, if one takes 0.03 as the error of the observed values of the Coriolis coupling constants, one can use the observed values to calculate the force constants.
Most of the vibrational anharmonic terms, xij, have been obtained, but they are tentative yet.
The rotational correction terms, α1 and α2 have been estimated from the combination-bands analyses.
A Kinetic Study of the Isotopic Exchange of Thallium(III) between the Thallium(III) Ion and the Thallium N-2-Hydroxyethylethylenediamine-N,N′,N′-triacetate Complex in Water
Authors: Tsuchimoto Michiko 
Published: July 2006

Abstract
1) The kinetics of the isotopic exchange of the thallium(III) EDTA-OH complex with uncomplexed thallium(III) has been studied in acid, neutral and weakly basic solutions, with 204Tl as tracer.
2) The exchange rate is independent of the concentration of uncomplexed thallium and proportional to that of the EDTA-OH complex, giving the relationship R=k·b under appropriate conditions throughout the pH range.
3) In a basic solution buffered by ammonia or barbiturate, the k is proportional to [OH−] and [TEA] and is little affected by the concentration of buffers. The Arrhenius activation energy is 29 kcal./mol.
4) In a neutral solution, near pH 7, the rate is small but measurable. It is independent of the pH value but proportional to the concentration of TEA, and it is little affected by the concentration of barbiturate. The activation energy is 22 kcal./mol.
5) In an acid solution buffered by acetate, the k is proportional to [H+], and [Cl−]1.5 and is little influenced by the concentration of acetate. The Arrhenius activation energy is 11 kcal./mol.
6) The features of the isotopic exchange of the thallium EDTA-OH complex are very similar to those of the thallium(III) EDTA complex.
The Effect of Several Condensed Phosphates on the Dissolution of Strontium Sulfate
Authors: Miura Masaji , Naono Hiromitu 
Published: July 2006

Abstract
The effect of ortho-, pyro-, tri- and trimetaphosphate on the dissolution of strontium sulfate has been studied. Pyro- and triphosphate remarkably retard the dissolution, even in an extremely dilute solution, while orthoand trimetaphosphate exhibit only an insignificant effect. From the results of the measurements of the adsorption of these phosphates onto the crystal surface, it is considered that the retarding action of these phosphates is to be attributed to the adsorption. The kinetic treatments of the dissolution and adsorption lead to the conclusion that the dissolution may be controlled by the specific places on the crystal surface and that such places may be the rate-determining sites for the dissolution.
Studies of Ion Exchange Membranes. XXII. Semicontinuous Preparation of Ion Exchange Membranes by the “Paste Method”
Authors: Mizutani Yukio , Yamane Reiichi , Motomura Hirozi 
Published: July 2006

Abstract
A method for the preparation of ion exchange membranes called the “paste method” has been developed into a semicontinuous preparation.
The roll-coating system being employed, a base membrane 1 m. wide and 50 m. long is prepared continuously; the ion exchange group is then introduced to it.
The ion exchange membranes thus prepared have been proved to have excellent electrochemical and mechanical properties as well as an excellent appearance.
Chelate Formation between Chromate Ions and Disodium-1,8-dihydroxy Naphthalene-3,6-disulphonate
Authors: Banerji Samir K , Qureshi Said-ul-Zafar 
Published: July 2006

Abstract
The formation of a coloured chelate with a λmax at 530 mμ between chromate ion and chromotropic acid (sodium salt)-disodium-1,8-dihydroxy naphthalene-3,6-disulphonate has been reported. The composition of the chelate has been studied by the method of continuous variation, using absorption spectra measurements, with a Hilger Uvispek spectrophotometer; it has been found to be Cr(CAD), (Disodium-1,8-dihydroxy naphthalene-3,6-disulphonate). The chelate has been found to be stable in the pH range 2—5 and so the investigations have been carried out in this range of pH. The chelate formed is deep red in colour and is very sensitive, being formed even at great dilutions.
The stability has been calculated by a method described earlier; the value of logK is 8.21±0.02, and the value of the free energy of formation, ΔF°, has been found to be −5.42±0.11 at 25°C.
Absorption Spectra of Dyes. IX. Electronic Spectra of a 1 : 1 and a 1 : 2 Complex, and CT-Bands
Authors: Hoshi Toshihiko , Tanizaki Yoshié , Ando Noboru 
Published: July 2006

Abstract
1) The absorption spectra of binary mixtures of Chrysophenine G (notation: G) and disazo dyes (P), which were the same as those used in a preceding study,1) have been measured at room temperature (ca. 20°C), and the characteristic spectra of the complexes have been determined by using the equilibrium constants, K1 and K2, previously obtained (at 20°C) for the 1 : 1 (PG) and 1 : 2 (PG2) complex formation.
2) The absorption spectra of the PG and PG2 complex have been compared with the respective corresponding additive spectra (P+G and P+2G), and the correlations among these spectra have been discussed in detail.
3) The MO pattern of the G molecule has been decided empirically by applying Platt’s theory; similarly, that of the P molecule has been decided by assuming that there is at least one symmetry species; then the spectral change caused by the complex formation could be explained in relation to the MO’s of the component molecules.
4) It has been confirmed that there exists an intermolecular charge transfer from P as an electron donor to G as an acceptor. It has also been shown that the first band of a disazo dye (P) consists of two electronic transitions; one is a π→π*(shorter wavelength) and the other an l→π* transition (longer wavelength).
Radiotracer Studies of Metal-Detergent Interaction by Means of a Dip Counter with an Evaporated Metal Film Window
Authors: Seimiya Tsutomu 
Published: July 2006

Abstract
The accumulation of solute on metal surfaces has been studied using a radiotracer technique. A dip GM-counter with an end window covered with an evaporated metal film was immersed in an aqueous solution of 35S-labeled sodium dodecyl sulfate, and the change in counting rate due to the accumulation of solute on the metal surface was traced with time for various metals and pH values of the solution. The accumulation curves obtained turned out to be composed of an initial plateau, representing the region of the physical adsorption of the detergent onto the the metal surface, and/or a rising portion of the accumulation curve, indicative of chemisorption. Assuming the closely packed adsorption of solute, the roughness factors of various metal surfaces have been calculated from these plateau characteristics. The rising portion of the curve corresponds to the formation of a thick metallic soap film. The rate of film growth is controlled by the migration of the detergent or metal ions through the film, and this rate decreases as the thickness of the surface film increases. This leads to the parabolic formula for the surface film growth, which is in good agreement with the experimental results. The effect of the pH of the solution on the rate of the uptake of dodecyl sulfate has also been measured for both copper and lead surfaces. For copper surfaces the rate of the uptake of a detergent shows a maximum at pH 7 and decreases in both acid and alkaline regions. For lead surfaces, the rate is large in the acid region and gradually decreases twoards the alkaline region.
The Stability Constants of Ethylenediaminetetraacetato, Trimethylenediaminetetraacetato and Propylenediaminetetraacetato Complexes of Some Divalent Metal Ions
Authors: Ogino Hiroshi 
Published: July 2006

Abstract
Two methods are presented for the determination of the stability constants of ethylenediaminetetraacetato, trimethylenediaminetetraacetato and propylenediaminetetraacetato complexes of some divalent metal ions. One is a new method which is based on the polarographic measurement of the concentration of an uncomplexed ligand in a solution containing two kinds of ligands and an appropriate metal ion. The other is a modification of the method described in the previous paper. From the results obtained by these methods and those obtained previously, the individual stability constants have been calculated. The values of the logarithmic stability constants of complexes at 25°C and ionic strength 0.2 are: Mn 13.64, Co 15.71, Ni 18.12, Cu 18.46, Zn 15.94, Cd 15.98 and Pb 17.76 for ethylenediaminetetraacetato complexes; Mn &lt;10.8, Co 14.48, Ni 17.29, Cu 18.04, Zn 14.26, Cd 12.69 and Pb 13.04 for trimethylenediaminetetraacetato complexes, and Mn 14.85, Co 17.07, Ni 19.42, Cu 19.64, Zn 17.14, Cd 17.43 and Pb 18.69 for propylenediaminetetraacetato complexes.
Ultraviolet and Visible Absorption Spectra of the Solid States of Aromatic Amine Complexes with Iodine
Authors: Kusakawa Hideaki , Nishizaki Shun-ichiro 
Published: July 2006

Abstract
The ultraviolet and visible spectra of aromatic amine complexes with iodine in the crystalline state have been investigated by means of the KBr disk method or with a squashed powder between quartz plates.
Part of the aniline (ANI) ions in the ANI-iodine system become positive, and the maximum of the spectrum band appears at 255 mμ. p-Phenylenediamine (p-PDA) and 1,5-naphthylenediamine (NDA) complexes with iodine possess the band maxima at the same position as those of ANI and α-naphthylamine. The ground states of these complexes seem to be dative states.
In benzidine (BEN) and o-tolidine (TOL) from polyphenylenediamines, and iodine complex systems bathochromic shifts are observed.
By estimating the ionization potential ID of these aromatic amines from the energies of the charge transfer transition, low values of ID, except for ANI, are obtained.
The electrical resistivities of these specimens are in the order BEN&lt;TOL&lt;NDA≈p-PDA, which is in agreement with that of the energies of the charge transfer transition.
Estimation of Anharmonic Potential Constants. II. Bent XY2 Molecules
Authors: Kuchitsu Kozo , Morino Yonezo 
Published: July 2006

Abstract
The vibrational potential function of the bent XY2 molecule has been expanded in terms of the internal coordinates to the fourth order and a general formulation which relates the coefficients of this expansion (second-, third-, and fourth-order potential constants) to the cubic and quartic constants in the normal-coordinate system has been derived. The third- and fourth-order constants in the internal-coordinate system for H2O, D2O, H2Se, D2Se, and SO2 have been determined by using the experimental α and x values taken from the literature. It has been shown that the third- and fourth-order constants which represent the anharmonic bond-stretching vibration, frrr and frrrr, are much larger than the other higher-order constants and that they are nearly equal (to within 12 per cent) to the anharmonic potential constants of the corresponding diatomic radicals. The method presented in Part I of this paper, which makes use of the “diatomic approximation” for estimating the anharmonic constants and the α and x values, has been applied to the bent XY2 molecules. A comparison of the results with currently available experimental data has shown that the signs and the orders of magnitude are in most cases correctly predicted by this approximation. This method has been further applied as an aid for the detection and analysis of the microwave absorption lines in the case of the SO2 and OF2 molecules in their excited vibrational states.
The Electronic Spectra of Pyrene, Chrysene, Azulene, Coronene and Tetracene Crystals
Authors: Tanaka Jiro 
Published: July 2006

Abstract
The electronic absorption spectra of single crystals of pyrene, chrysene, azulene, coronene and tetracene have been measured by a polarized light. Some crystal absorption bands exhibit appreciable splittings and changes in intensity relations according to the simple exciton theory. Those results are explained by the use of the second-order exciton calculation without the inclusion of the electron overlap effect. The theoretical results give a fairly reasonable explanation of crystal spectra, and it has been shown that the second-order mixing of excited states plays an essential role in modifying the crystal spectra from the pattern of the free molecule.
Combination of Sulfuric Acid with Cellulose during the Hydrolysis with a Small Amount of Concentrated Sulfuric Acid
Authors: Sakai Yoshio 
Published: July 2006

Abstract
The combination of sulfuric acid with cellulose occurring during the hydrolysis of cellulose in a small amount of concentrated sulfuric acid has been investigated. The amounts of the soluble and the insoluble glucose polymers produced from cellulose, and the amount of sulfuric acid combined with them, have been estimated. To obtain an effective concentration of sulfuric acid on the cellulose, the concentration of the sulfuric acid must be greater than about 60%. The sulfuric acid concentration in the cellulose-sulfuric acid-water system can not exceed 75%, even when the initial concentration exceeds 85%. The amount of soluble glucose polymer (g.) produced by the action of 100 g. of sulfuric acid is given by 0.0384 exp(0.0958C+4.06r)/[1+0.00132 exp(0.0815C+4.06r)] (C is “initial” concentration of sulfuric acid (%) and r, sulfuric acid-cellulose ratio).
Absorption of Carbon Dioxide in a Centrifugal Absorber by Mono-and Diethanolamine Solutions
Authors: Matsuda Mamoru , Fujioka Yoshio 
Published: July 2006

Abstract
After a description of a centrifugal carbon dioxide absorber, the effects of variables on the mass transfer coefficient of the absorber have been reported. For the experimental conditions examined, the following conclusions may be arrived at:
(1) When the rate-determining step is gas diffusion, the MEA and DEA liquid of the same concentration have the same mass transfer coefficient as long as the effect of viscosity is negligible.
(2) The transfer coefficient increases linearly as the concentration of an MEA aqueous solution increases.
(3) The relation between the coefficient and the concentration of a viscous DEA aqueous solution is given as:
K G a∝N⁄μ0.5
(4) The relation between the coefficient and the concentration of carbon dioxide in a MEA liquid is given as:
K G a∝e−6.56M
(5) So long as the gas diffusion is the ratedetermining step, the coefficients for two solvents, water and glycerol, differ little.
(6) The coefficient for MEA increases greatly with the liquid flow rate; however, the coefficient for DEA increases only a little.
(7) The coefficient is initially in direct proportion to the square root of the gas flow rate.
(8) The efficiency of the centrifugal absorber remains constant even if the carbon dioxide concentration in the gas stream changes from 3 to 0.2%.
(9) The coefficient is in direct proportion to the logarithm of the rotor revolutions per minute.
(10) Slight modifications, except for packing on the rotor, with the aim of increasing the surface area of a liquid do scarcely anything to improve the absorber.
Oxidation of Alcohols with t-Butyl Chromate. I. The Oxidation of Primary Aliphatic Alcohols
Authors: Suga Takayuki , Kihara Keiichi , Matsuura Tamon 
Published: July 2006

Abstract
Oxidation with t-butyl chromate has been carried out on the straight-chain alcohols with the general formula of R·CH2OH, where R is CH3, CH3(CH2)2, CH3(CH2)3, CH3(CH2)4, CH3(CH2)10, CH3(CH2)14 and CH3(CH2)16, on branched-chain alcohols with a variety of substituents at the carbon alpha or beta to the hydroxymethyl group, and on unsaturated alcohol with an allylic hydroxymethyl group. Thus, a saturated primary alcohol containing the grouping of –CH2·CH2OH, &gt;CH·CH2OH or (Remark: Graphics omitted.)C·CH2OH has been found to produce mixtures of the corresponding aldehyde, acid and ester in comparable yields. On the other hand, an unsaturated primary alcohol with an olefinic double bond on the carbon adjacent to the hydroxymethyl group produces the corresponding aldehyde in a high yield, but not the ester.
The Synthesis and the Reactions of 2,4,6-Tri-(ω-hydroxyalkyl)-1,3,5-triazines
Authors: Nohira Hiroyuki , Nishikawa Yoshihiro , Furuya Yoshiaki , Mukaiyama Teruaki 
Published: July 2006

Abstract
2,4,6-Tri-(ω-hydroxyalkyl)-1,3,5-triazines have been prepared by the reaction of hydrochlorides of cyclic iminoethers, such as 2-iminotetrahydrofuran, 2-iminotetrahydropyrane or 2-iminooxepan, with triethylamine. The reactions of the triazines with o-phenylenediamine or 1,8-naphthylenediamine to give 2-(ω-hydroxyalkyl)benzimidazoles or 2-(ω-hydroxyalkyl)perimidines have also been described.
A Shock-Tube Study of the Acetylene-Oxygen Reaction
Authors: Takeyama Tetsu , Miyama Hajime 
Published: July 2006

Abstract
Acetylene-oxygen reaction in shock waves has been studied over the range of conditions 820°≤T≤1630°K, 1.8≤P≤5.6atm., 8.4×10−4≤[O2]≤4.1×10−3mol./l. and 0.4≤[C2H2]/[O2]≤1.5. Visible emission, OH absorption, and pressure have been measured simultaneously at the same location in the tube. The induction periods obtained from these measurements have been found to be identical with each other and to be dependent upon the oxygen concentration. It has also been found that the activation energy derived from the log(τ[O2]) vs. 1/T plot is equal to 19.0±0.6 kcal./mol. Thus, the reaction H+O2→OH+O is considered to be rate-determining during the induction period, as in the hydrogen-oxygen reaction.
The visible emission has been found to have a sharp peak at about 4320Å and has been attributed to the 2Δ–2π transition of CH radicals.
Polyesters Containing Carbazole Rings in the Main Chain. I. Syntheses of Diacylcarbazoles and Carbazoledicarboxylic Acids
Authors: Nagai Yoshio , Huang Chin-Chuan 
Published: July 2006

Abstract
Acetylation of carbazole with acetyl halide or acetic anhydride gave both monoacetyl and diacetylcarbazoles. Several carbazoledicarboxylic acids were prepared in quantative yields by oxidizing the corresponding diacetylcarbazoles.
The Alkaline Sulfide Reduction of Aromatic Nitro Compounds. VII. The Induction Period of the Sodium Monosulfide Reduction of Sodium m-Nitrobenzene Sulfonate
Authors: Hashimoto Shizunobu , Sunamoto Junzo 
Published: July 2006

Abstract
In the sodium monosulfide reduction of sodium m-nitrobenzene sulfonate, an induction period appears. The present investigation was undertaken in order to determine the causes of this induction period. The induction period is due not to the nitro compound, but to the reducing agent. The induction period is shortened by means of irradiation by ultraviolet light, the addition of potassium persulfate, ferric chloride, and α,α′-azobisisobutyronitrile, or under atmospheric conditions. On the other hand, the addition of phenol or alcohol lengthens the induction period. Further, on the basis of polarographic and spectroscopic studies of the induction period, it has been suggested that soduim disulfide is produced during this induction period. On the basis of these data, it seems reasonable to assume that, in the reduction of aromatic nitro compounds by sodium monosulfide, the reducing power of monosulfide is very small in itself, and that the nitro group is reduced by the disulfide produced by the radical oxidation of monosulfide. The formation of the sulfide ion radical and its dimerization appear to be responsible for the induction period of this reaction.
The Amperometric Determination of Thallium(III) and Silver(I) with Ascorbic Acid Using Two Polarized Indicator Electrodes
Authors: Singh D , Bhatnagar Uma 
Published: July 2006

Abstract
Amperometric determinations of thallium(III) and silver(I) with ascorbic acid have been carried out with two polarized electrodes at 100 mV. and 50 mV. respectively. A simple method for the successive determination of thallium(III) and silver(I) has been developed. At an acidity of 0.1 to 1.0 n with respect to sulphuric acid, only thallium(III) is reduced; silver(I) remains unaffected. After the completion of the reaction with thallium(III), the pH of the solution is adjusted to 6.5 to 7.0 and the silver(I) is titrated with ascorbic acid.