bluuebunny/crossref_metadata_2025_split huggingface dataset:
Near Ultra‐Violet Emission Spectra of Gaseous Benzene at 2500–3000 Å Excited by High Frequency Field
Authors: Lin Wei‐Chuwan 
Published: June 2015

AbstractA high frequency oscillator producing a short wave of about 20–30 m in wavelength was used for obtaining the emission spectrum of benzene vapor. The emission spectrum of benzene at 2500–3000Å was analyzed. A comparison was made between our results and those of Austin and Black which were obtained with a Tesla discharge. The vibrational structure was found to be in agreement with the selection rules for a forbidden electronic transition (1B2u→1A1g (1Γ10 → 1Γ1))
Elution Studies of Titanium and Zirconium with Sulfuric Acid
Authors: Chen Ying‐Mao 
Published: June 2015

AbstractThe adsorption of titanium and zirconium on Amerlite‐IR 120 and the elution curves at various acidities have been discussed. The elution curves of zirconium were found to change in an irregular manner, while those of titanium in a regular manner at acidities ranging from 0.75 N to 1.25 N. The abrupt change of amount of titanium and zirconium eluted with the eluate volume furnished a strong support to the view of change of ionic species. By using 0.75 N sulfuric acid as an eluent, the author has succeeded in separating a mixture of titanium and zirconium. The results showed that more than 90% of titanium‐free Zirconium could be isolated by a single elution.
On the Synthesis of Hydroterphenyl Derivatives by Grignard Reaction
Authors: Chang Daniel Y. , Shieh Nan 
Published: June 2015

AbstractThe reaction between p‐bromophenylmagnesium bromide and cyclo‐h‐exanone has been reinvestigated. p‐Bromophenylcyclohexene (tetrahydro‐p‐bromodiphenyl), dehydration product of the tertiary alcohol resulted from the above reaction, was converted into the corresponding organomagnesium compound by a special method. The latter was in turn allowed to react with cyclohexanone, resulting in the formation of hydroterphenyl derivatives.
Chemical Investigation on Human Hair Grease
Authors: Liu Sheng‐Lieh 
Published: June 2015

AbstractBy extracting separately hair from boys, girls, men, and women with organic solvents, different samples of grease were obtained. Among these, the constituents of man hair grease were thoroughly investigated. 6.7‐Hexadecenoic acid was found to be the characteristic constituent. The presence of jimmoarachidic acid C20H40O2, m.p.70°C**, myristic,. palmitic, stearic, oleic and ricinoleic acids were also comfirmed. The unsaponifiable matter was found to consist of cholesterol and other sterols, as well as other neutral substan es. Woman hair grease was examined less thoroughly. The presence of myristic, palmitic, stearic, 6,7‐hexadecenoic, oleic acids only were proved. The lower acids, which were present in the form of esters, were found to exhibit high optical activity.
Essential Oils. III. Oil of Lemon Pondelosa Peel
Authors: Yeh Ping‐Hsien 
Published: June 2015

AbstractIt has been found that d‐limonene is the principle constituent of the oil obtained by distilling Lemon Pondelosa peel. The percentage yield of the crude oil from the peel is 0.45%. The presence of an aldehyde with the empirical formula C10H14O (about 3% of the crude oil) and bisabolene (15% of the oil) was confirmed in the present work.
Low Temperature Phosphorization of Electrolytically Deposited Copper Cathodes
Authors: Huang Tah‐Ho 
Published: June 2015

AbstractElectrolytically deposited copper cathode has been used as the starting material for the preparation of pure, high analysis phospho‐copper by treating with yellow phosphorus at 350°C. or lower temperatures in a sealed crucible. The reaction, which is exothermic, has been found to begin at 180°C. or possibly lower temperatures. Some evidence showing the reaction to take place in two or more stages has been given. The necessity of rigorously controlling the crucible temperature has been observed. This process is the most economical and the simplest in practice. It can be used for the simultaneous production of phosphocopper and red phosphorus. The products so prepared contain 20.6% of P or more.
Molecular Orbital Theory of Cycloheptatrienylium (Tropylium) Ions
Authors: Lin Wei‐Chuwan 
Published: June 2015

AbstractBoth cycloheptatrienylium (tropylium) cation and anion are treated in terms of the M.O. theory. The π molecular orbitals in the order of an increasing energy are calculated. The molecular structure: π electron distribution, final charge distribution, final fractional bond ordor, bond length of each C‐C bonds, are also calculated for the ground state. It is concluded that both of the tropylium ions have C2e symmetry.
Separation of Rare Earths by the “Oxine‐Sulfonic Acid Method”. On the Separation of Cerium from Lanthanum
Authors: Chang Tiao‐Hsü 
Published: June 2015

AbstractSince oxine‐sulfonic acid complex of lanthanum is much less complex than that of tetravalent cerium, by moderate heating of the mixed solution with sodium carbonate in excess, the lanthanum complex ion breaks down and precipitates quantitatively as carbonate, which is nearly insoluble in excess of sodium carbonate solution. The cerium complex ion, on the contrary, remains in the solution without decomposition.
Extractive Components from the Heartwood of Taiwania Cryptomerioides Hayata. I. Isolation of Four Crystalline Components from the Acetone Extract
Authors: Lin Yau‐Tang , Lo Tung‐Bin , Shih Er‐Huang 
Published: June 2015

AbstractFour crystalline components, Taiwanin A, B, C and D were isolated from the acetone extract of the heartwood of Taiwania Cryptomerioides Hayata by chromatographic method.
Separation of Europium from other Rare Earths by the “Oxine‐Sulfonic Acid Method”
Authors: Chang Tiao‐Hsü 
Published: June 2015

AbstractA mixed ammoniacal solution of oxine‐sulfonic acid, samarium, europium and a small amount of gadolinium nitrate was electrolytically reduced using a platinum cathode in the presence of acetic acid. Europium was quantitatively precipitated with very little samarium (estimated at‐1 or 2%). The other earths remaind in solution.The greenish yellow precipitate corresponded to the formula, H2 (Eu‐(C9H5NOSO3)2)·4H2O.
Biochemistry of Mushroom, Biochemical Tendency in the Fructification of Collybia Velutipes
Authors: Liao Shu‐Tsung , Ho Hon‐Kai 
Published: June 2015

AbstractSome fundamental observations and studies have been made on the fruiting of Collybia velutipes cultivated in a chemically defined synthetic liquid medium. Attention was paid to the influences of the concentration of carbon and nitrogen in the original culture medium, the contents of both types of nucleic acids in the mycelial cells on fructification. Besides, the effects of antibiotics, growth hormones, light, and antagonism of other microorganisms were also studied.The cultivating time seemed to be the most important factor which affects the influence of the original nutrient level of the medium on both the mycelial growth and the fruit body production. Thus, in general, more mycelia grow on a medium with higher nutrient level after longer cultivation, and more fruit bodies are also produced on the same medium after the mycelial growth ceased.The nitrogen in fruit bodies seemed to originate in those of medium and mycelia, and N‐fixation seemed to be not obliged to take part in the growth of fruit body. The CO2‐fixation, however, was found to be essential for the normal growth of fruit body.The contents of ribonucleic acid (RNA) and protein in the mycelial cells in a flask reached their maximum value when the first fruit body was just produced, while the deoxyribonucleic acid (DNA) still continued to increase for a period thereafter, and the protein‐N released from the mycelium was supposed to be used for the protein synthesis in the fruit body. The ratios of RNA‐P/DNA‐P and protein‐N/DNA‐P in the mycelial cells had begun to decrease before the fruit body was going to grow. The fruiting was, therefore, expected to be preceded by the deprivation of the ability, of protein synthesis of the mycelial cells.The visible light of shorter wave lengths (i.e., violet and blue light) was found to be indispensable for the normal development of pilius and the production of spore. It was found that this effect of light could by no means modified by supplying amino acids, protein hydrolyzate, or extract of normal fruit body to the medium or on the pilius. Similar clustered secondary fruit bodies were formed by adding tryprophane or indolacetic acid to the medium or smearing them on the minute pilei of young fruit bodies. This abnormal development of fruit body was regarded as a part of the nutritive growth of the stem of the normal one due to the existence of nutritive growth hormones, and the photoinduction was supposed to result in the destruction of nutritive growth hormones or the formation of some growth hormone antagonists rather than the formation of transmissible floral stimulants, such as florigen.The application of some antibiotic substances (e.g., aureomycin and terramycin) to the mycelium on a malt agar culture was found to promote the fruiting, while penicillin showed no effect. The antagonistic actions of a species of penicillium and aspergillus oryzae were also found to promote the fruiting at their boundary on a malt agar culture.
Synthesis of Cinnamic Acid from Benzaldehyde and Acetone
Authors: Su Futi , Chen Wan‐Chiu 
Published: June 2015

AbstractCinnamic acid was prepared by oxidation of benzalacetone which was synthesized by condensing benzaldehyde and acetone. For producing benzalacetone, benzaldehyde was reacted with acetone in 1% NaOH solution. The yield was 88.8% of the theoretical. The benzalacetone was further oxidized with sodium hypochlorite to give 88.2% of cinnamic acid, m.p. 133°C.
Molecular Orbital Theory of Hyperconjugation III. Ortho‐, Meta‐, and Para‐Xylene
Authors: Lin Wei‐Chuwan 
Published: June 2015

AbstractThe M.O. theory is applied to the case of hyperconjugation in ortho‐, meta‐, and para‐xylene. The results obtained are listed. Physical and chemical properties of xylene in relation to toluene and benzene are briefly discussed. The isomerism in xylene originates from the polarization effect, notwithstanding the fact that each isomer exhibits identical polarizability through degeneracy.
The Polarisation of Aqueous Solutions of Long‐Chain Electrolytes at Optical Frequencies‐A Mechanism of the Formation of Ionic Micelles
Authors: Lin Wei‐Chuwan 
Published: June 2015

AbstractBöttcher's formula for the molecular refraction of dissolved electrolytes is used to interprete the refractive index versus concentration curve previously obtained for the aqueous solutions of some long‐chain anionic colloidal electrolytes.The plotting of the reciprocal of polarisabilicy of dissolved long‐chain anion as a function of \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{2{\rm n}^2 - 2}}{{2{\rm n}^2 + 2}} $$\end{document} under two different temperatures gives two straight lines A, B and non‐linear parts C, as being shown in Fig. 1.It is concluded that (1) the straight line A corresponds to a linear relation between \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{1}{{\alpha *_{X^ -}}} $$\end{document} and \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{2n^2 - 2}}{{2n^2 + 1}} $$\end{document} for simply dissociated long‐chain anion X−, (2) the other straight line B to a same relation between \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{\nu}{{\alpha *_{\left({^\alpha \nu} \right)^ -} \nu}} $$\end{document} and \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{2{\rm n}^2 - 2}}{{2{\rm n}^2 + 2}} $$\end{document} for ionic micelle (xν)−ν, after reaching the ultimately definite structure, and (3) the non‐linear parts C may be interpreted as a transition stage for long‐chain anions from the state of simply dissociated ones to the state of ionic micelle with its ultimate definite structure, and suggests that the formation of micelle with its ultimate definite structure may be accomplished gradually over a wider range of concentration, but not instantly at C. M. C.
The Essential Oil of Chamaecyparis Taiwanensis, Masamune et Suzuki. III. The Synthesis of 7‐Hydroxy Hinokitiol and its Derivatives
Authors: Lin Yau‐Tang , Chen Chen‐Loung , Wang Kung‐Tsung 
Published: June 2015

Abstract7‐Hydroxy 4‐isopropyl torpolone (7‐hydroxy hinokitiol) was synthesized from bromo‐and iodohinokitiol. Its 7‐isopropoxy and 7‐phenoxy derivatives were also synthesized by the Ullmann reaction in good yields. The nature of these compounds were compared with that of Chamaecin.
Conjugated Unsaturated Ketones. XIII. A Side‐Reaction in the Preparation of Dibenzylidenecyclohexanone and Thermal Isomerization and Dimerization of Dibenzylidenecyclohexanone
Authors: Yeh Ping‐Yuan , Chen Chao‐Tung , Wang Cheng‐Hsia , Chang Pik‐Kuei , Yang Shu Shu 
Published: June 2015

Abstract9‐Phenyl‐1,2,3,4,5,6,7,8‐octahydrodibenzo‐γ‐pyran (V) was obtained from the mother liquor of crude 2,6‐dibenzylidenecyclohexanone (DBH) (1).Oxidation of 2,5‐dibenzylidenecyclopentanone (DBP) and DBH yielded benzoic and succinic acids, and benzoic, glutaric and 2‐benzylideneadipic acids respectively. Chromic acid oxidation of DBH gave benzaldehyde and benzoic acid, while that of the DBH dimer did not yield either of the two products.The formation of the DBH dimer by refluxing DBH in ethanol was inhibited by acid, alkali, rubber stopper, and sulfur, but was not affected by soft glasswares.Two dimers and three monomeric isomers of DBH were isolated, two of them probably represent cis forms.Thermal isomerization and dimerization of dibenzylideneacetone, difurfurylideneacetone, and difurfurylidenecyclohexanone were also studied. The latter two compounds were failed to give even a trace of the expected isomers or dimers.DBH gave, with phenylhydrazine, 2,3‐diphenyl‐7‐benzylidenecyclohexa‐pyrazoline (XII), while DBP with the same reagent at 190‐200° afforded benzaldehyde phenylhdrazone, ammonia, and water. The tetra‐bromide of DBP (XV) and phenylhydrazine readily gave phenylhydrazine hydrobromide.
Studies on the Gummy Substances in Taiwan Cane Molasses. II. Chromatographic Fractionation of the Sugars and the Amino Acids in the Gummy Substances by Cellulose Powder and Ion Exchange Resin
Authors: Hsieh P.T. , Huang I.Y. 
Published: June 2015

AbstractLiquid chromatography using cellulose powder as the adsorbent was applied in the fractionation of the carbohydrates in the hydrolyzates of gummy substances, and the presence of d‐xylose, I‐arabinose, d‐glucose and d‐galactose was confirmed. The fractionation of the amino acids in the hydrolyzates of the gummy substances was carried out by ion exchange chromatography and the amounts of aspartic acid, serine, glutamic acid, proline, glycine, alanine, cystine, valine, methionine, isoleucine, leucine, tyrosine, phenylalanine, histidine, lysine and arginine were determined.
Separation of Strontium from Barium Ions by Paper Electrochromatography
Authors: Pan Kuan , Cheng Hwasheng , Lee Yuan‐Tzer 
Published: June 2015

AbstractThe migration order of strontium and barium ions in aqueous citric acid solutions was reversed and the complete separation was found to be possible by the addition of methanol, ethanol, or isopropanol. The relative velocity of strontium to barium ions increases with the increasing proportion of alcohols to aqueous solutions. Separation of these ions from each other has been carried out at the field strength of 10, 20, and 37 volt/cm. At 37 volt/cm, strontium and barium ions were separated completely within 1, 2.5, and 6 hours in 80% methanol, ethanol, and isopropanoi solutions, respectively. The migration distances of strontium and barium ions in these solutions have been found to be 16.5, 13.2; 21, 12 and 24, 15 cm, respectively. The readiness for the separation depends on the use of solvents and decreases in the order of methanol, ethanol and 2‐propanol. The increase in partition coefficients is attributed to the addition of alcohols.
Notes on the Synthesis of Octahydroterphenyl Derivatives by Grignard Reaction
Authors: Chang Daniel Y. , Yu Ruey‐Jiin 
Published: June 2015

AbstractThe reaction between p‐bromophenylmagnesium bromide, p‐bromo‐magnesiophenylmagnesium bromide and cyclohexanone has been reinvestigated. By using ammoniacal solution of ammonium chloride todecompose the resulting organomagnesium complex, we were able to improve the yield of one of the reaction products, and to isolate one product heretofore missing. The yield of 1′4′‐dihydroxydicyclohexylbenzene based on p‐dibromobenzene was increased to about 5%. Besides, we succeeded in isolating p‐bromophenyl‐cyclohexanol‐1 which was so liable to undergo dehydration that previous workers had failed to isolate.
Kinetics of the Reaction between Titanium (III) and Mercury (II) in Aqueous Hydrochloric Acid Solutions
Authors: Lin Sheng‐Hsien , Pan Kuan 
Published: June 2015

AbstractThe reduction of Hg(II) by Ti(III) ions in aqueous solution of hydrochloric acid has been found to be of second‐order with respect to the total concentrations of Hg(II) and Ti(III) ions,−d[Ti+++]t/dt = k[Ti+++]t [Hg++]t.The rate constant was found to be practically independent of the concentration of hydronium ion, but to be a function of that of chloride ion. The competing reactions of Ti+++ and TiCl++ with Hg++, HgCl+, HgCl2, HgCl3− and HgCl4− were inferred. The specific rate constants were calculated.
Determination of Micro Amounts of Lead by the “Isotope Dilution Method of Analysis” with ThB (Pb212) as a Tracer
Authors: Chen Ying‐Mao 
Published: June 2015

AbstractDetermination of micro amounts of lead with ThB (Pb212) as a tracer by the “Isotope Dilution Method of Analysis” has been studied.ThB can be easily obtained from ordinarly chemical reagent of thorium nitrate by extracting with dithizone. If dithizone in chloroform solution is saturated with lead containing radioactive tracer ThB, and equilibrium is established with the aqueous layer containing varying amounts of lead, the amounts of lead in the aqueous solution can be easily found by simply measuring the activities in the organic layer from the following relation:

With this relation, the determination of micro amounts of lead in aqueous solutions can be easily made without any auxiliarly chemical methods.
Study of the Essential Oil of Wild Perilla and the Stereospecific Reduction of (−)‐Piperitone
Authors: Yeh Ping‐Hsien 
Published: June 2015

AbstractThe essential oil from wild perilla contains 55% (−)‐piperitone, 31% (−)‐limonene, 6% α‐caryophyllene, and 0.5% (−)‐piperityl formate. 2,4‐Dinitrophenylhydrazone was found to be the most suitable derivative for the identification of piperitone. Partial racemization, that occurred during the formation of the semicarbazone and also during the hydrolysis of the semicarbazone, was confirmed by the isolation of a new optically active semicarbazone of (−)‐piperitone. Reduction of (−)‐piperitone with sodium and moist ether gave (+)‐isomenthol in high yield. This will find application in stereospecific synthesis.
Study in the Nature of Silicon in Rice Hull. I. Solubility of the Silicon Part
Authors: Liu Sheng‐Lieh , Ho Chin‐Hsia 
Published: June 2015

AbstractBelieving that the silicon in rice hull must exist as organosilicon compounds, the authors have undertaken a series of researches so as to gain an insight into the problem. In this paper, experiments including treatment with hydrofluoric acid, extraction with various solvents, hydrolysis with acid and boiling with alkali are described. Dialysis of the products resulting from these experiments has shown definitely that silicon passed into aqueous solution even with a pH at which silica might precipitate. Since lignin does not contain ash, it is supposed that the silicon in rice hull may be combined with the polysaccharide part.
Studies of the Solution Polymerization of Vinyl Acetate in the Aqueous Solution of Partially Acetylated Polyvinyl Alcohol. III. The Configurational Change of the Polymer
Authors: Lin Chen‐Chong 
Published: June 2015

AbstractThe configurational change of the specially prepared graft polymer molecule occurred, when an appropriate amount of alcohol was added into the polymer solution and then evaporated it again. The graft polymer studied here was polyvinyl alcohol (PVA) with polyvinyl acetate (PVAc) branching prepared according to the procedure given in our previous papers.(1.2)The schematical explanatian of the configurational change of this graft polymer has been given. The viscosimetric measurements of the solution of the polymer of outward form have been examined and the results compared with those of the solution of the polymer of inward form. The polymer of outward form dissolved in alcohol of various strengths have their values of intrinsic viscosity the same as, but their values of Huggins' constant different from, those given by the polymer of inward form.The extent of configurational change of the polymer molecule depends on the amount of alcohol added in bringing about the change.
Cathodic Action of the Uranium Chelate Compounds at the Dropping Mercury Electrode. II. Uranyl‐Glutamate Complex
Authors: Lai Tsai‐Teh , Chang Teh‐Liang , Chang Hua 
Published: June 2015

AbstractThe polarographic behavior of a tridentate chelate compound of uranyl‐glutamate has been investigated over the pH range of 1.5 to 5.5.The first wave of one‐electron reduction and diffusion‐controlled reversible wave was applied through this pH. range. Below pH 1.9 there was no chelation, and above pH 5.5 turbidity ensued.At pH 3.0 to 3.9 the diffusion current was independent of pH value and the diffusion current constant was calculated to be 2.08. The proportionality between uranyl ion concentration and diffusion current held within the narrow range of 2.2 × 10−4 M to 3.3×10−3 M with 1.9% average deviation of the mean.The chelate forms and electrode reactions identified from the half‐wave potential and diffusion current data were:
Polarographic Studies of Dipicrylamine. III. Coulometric Determination of n, Number of Electrons Involved in the Reduction of Dipicrylaminate Ion on the Dropping Mercury Electrode
Authors: Lin Zui‐Feng 
Published: June 2015

AbstractCoulometric study was carried out according to Lingane to determine the number of electrons involved in the reduction of dipicrylaminate ion on the dropping mercury elctrode. Among the three waves shown in the previous paper, the second wave is most well defined. Therefore, n, number of electrons involved at this step was determined. From the n value determined in the present investigation, the mechanism of reduction of dipicrylaminate ion on the dropping mercury electrode was given. The polarographic diffusion coefficient was evaluated from n and diffusion current constant by using Ilkovic equation.
Study of the Extractive Constituents from the Wood of Libocedrus Formosana, Fllorin. IV. Partial Hydrogenation of Thujic Acid
Authors: Cheng Yu‐Shia , Lo Tung‐Bin , Chang Luan‐Ho , Lin Yau‐Tang 
Published: June 2015

AbstractFurther studies of partial hydrogenation of thujic acid by Na‐Hg was made. Acid (I) was obtained by using the boric acid buffered water medium. It was quantitatively isomerized to acid (IV) by the treatment with a weak base. Acid (I) and (IV) were identified as 4,4‐dimethylcyclohepta‐2,6‐diene‐carboxylic acid and 4,4‐dimethylcyclohepta‐1, 6‐diene‐carboxylic acid respectively.
Ultraviolet Absorption of the Flavone Series. VI. Spectra of Some Biflavonyls
Authors: Lin C. H. , Hsu K. K. , Chen F. C. 
Published: June 2015

AbstractAbsorption spectra of seven biflavonyls were investigated. They were compared with those of the structurally related hydroxy‐flavones and haloflavones. Such spectrographical data, as well as the considerations of the electron density distribution and of the steric hindrance led to the establishment of the configurations of the biflavonyls in question.