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Tadashi HARA
1992 Volume 8 Issue 6 Pages
735-736
Published: 1992
Released on J-STAGE: July 27, 2007
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Application to the Determination of Physico-Chemical Constants and Separation Optimization
Takeshi HIROKAWA, Yoshiyuki KISO
1992 Volume 8 Issue 6 Pages
737-748
Published: December 10, 1992
Released on J-STAGE: June 30, 2006
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A computer simulation of isotachophoresis is described for the purpose of determining physico-chemical constants and separation optimization. On the basis of the mobilities, dissociation constants and stability constants of the separands, the effective mobilities and the isotachopherogram in the steady state condition can be exactly simulated at a given electrolyte condition. When some of the necessary constants are unknown, they can be evaluated by means of a least-squares method on the basis of the observed qualitative indices. Since the sample amount necessary for electrophoretic separation is very small and good separability from coexisting substances is expected, this may be one of the useful methods for determining the physico-chemical constants. When the necessary constants are known, the optimum separation condition can be obtained by an iterative simulation that varies the electrolyte condition, such as the electrolyte pH, the solvent (water and methanol) and the concentration of the complex-forming agents to give the largest effective mobility differences among the separands.
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Hirotsugu KIDO, Kazuhiko TSUKAGOSHI, Mizuo MAEDA, Makoto TAKAGI, Tohru ...
1992 Volume 8 Issue 6 Pages
749-753
Published: December 10, 1992
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A Cu
2+-ion selective resin (resin A) was synthesized by a novel template polymerization technique, using oleic acid as a host monomer, divinylbenzene as a matrix-forming monomer and Cu
2+ ion as a target molecule. The metal (Cu
2+ and Ca
2+) ion complexation equilibria of resin A together with a reference resin (resin B) studied potentiometrically indicate: 1) rapid and reversible complexation reactions, and 2) a highly selective binding of resin A to Cu
2+ ions. These properties show that Cu
2+-ion selective cavities were formed at the surface of resin A.
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Makoto AIHARA, Fudeko TANAKA, Minori FUJIMOTO, Kô TAKEHARA
1992 Volume 8 Issue 6 Pages
755-759
Published: December 10, 1992
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The stoichiometry and stability constants of the complexes formed between nickel(II), cobalt(II), copper(II) and manganese(II) with L-aspartyl-L-phenylalanine methyl ester (aspartame, LH) have been determined potentiometrically at 25°C and μ=0.1. Nickel(II) and cobalt(II) react with aspartame to form ML, ML
2 and ML
3 type complexes. Copper(II) forms ML and ML
2 type complexes. On the other hand, manganese(II) forms ML type complexes. The Irving-Williams′order, Co(II)<Ni(II)<Cu(II), was found to be satisfied for ML
+ complexes. Complex distribution depending on pH and metal/aspartame ratio is given for these systems.
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Tatsuya TAKAGI, Atsuomi KIMURA, Yong-Zhong DA, Hironori NAKAI, Hideaki ...
1992 Volume 8 Issue 6 Pages
761-765
Published: December 10, 1992
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The Grunbauer′s method using multiple-regression analysis has been applied to determine the partition coefficients in liposome/water systems after a modification to an ideal case without a constant term in the regression equation. Further, an error analysis was achieved for the partition coefficients with the aid of a non-parametric bootstrap method. The partition coefficients of the substituted hydroxybenzyl alcohols were measured in systems of liposome/water, olive oil/water, and 1-octanol/water. A quantitative structure-activity relationships analyses using these partition coefficients are compared and discussed.
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Tohru SAITOH, Yohsuke YAMAZAKI, Tamio KAMIDATE, Hiroto WATANABE, Kensa ...
1992 Volume 8 Issue 6 Pages
767-771
Published: December 10, 1992
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Nickel(II) and cobalt(II) were extracted by
N-alkylcarbonyl-
N-phenylhydroxylamines (R-PHA or HL) having primary, secondary, or tertiary alkyl substituents. The extracted species were nonadduct (ML
2) or selfadduct (ML
2(HL)) depending on the kinds of metal ions and R-PHAs. The selectivity in the extraction of the two metal ions by R-PHAs was highly dependent upon the structure of each alkyl substituent and was decreased with an increase in the branching. The selectivity was explained in terms of the steric effect of the alkyl substituent. For this purpose, the selectivity was defined by a separation factor, the ratio of the two extraction constants between a 1:2 nickel(II) chelate (NiL
2) and 1:2 Cobalt(II) chelate (CoL
2). The separation factor was correlated inversely with a steric parameter, STERIMOL B
1, representing the steric effect of the alkyl substituent located at the α carbon neighboring the carbonyl group of R-PHA. Thus, the steric effect of alkyl substituent plays an important role in the extraction of the two metal ions with R-PHAs.
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N. MIRALLES, A. SASTRE, M. MARTINEZ, M. AGUILAR
1992 Volume 8 Issue 6 Pages
773-777
Published: December 10, 1992
Released on J-STAGE: June 30, 2006
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The aggregation equilibria of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (HEH(EHP)) and di(2-ethylhexyl)phosphoric acid (HDEHP) dissolved in toluene has been investigated by vapor-pressure osmometry at different temperatures. The experimental data have been treated both graphically and numerically, and the average aggregation number n of organophosphorus acids, as well as the aggregation constants, has been determined. The results suggest that dimers are formed and the dimerization constant decreases with temperature. Finally, an estimated enthalpy value for the aggregation of organophosphorus acids in toluene has been calculated by using the van′t Hoff equation.
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Manabu NAKAZONO, Hitoshi NOHTA, Yosuke OHKURA, Kazumi SASAMOTO
1992 Volume 8 Issue 6 Pages
779-783
Published: December 10, 1992
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Chemiluminescent assays for β-D-galactosidase and alkaline phosphatase are described which use novel chemiluminogenic substrates, o-aminophthalylhydrazide-β-D-galactoside and o-aminophthalylhydrazide-O-phosphate, respectively. Each substrate is enzymatically hydrolyzed under the optimum conditions to release luminol, which luminesces in the presence of potassium hexacyanoferrate(III) in an alkaline medium. The detection limits (
S/N=3) of the enzyme activities (μU per tube) were 50 for β-D-galactosidase and 100 for alkaline phosphatase.
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Tadashi SEGAWA, Asao KAKIZAKI, Tamio KAMIDATE, Hiroto WATANABE
1992 Volume 8 Issue 6 Pages
785-788
Published: December 10, 1992
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Glucose in serum was successfully determined by the simultaneous coupling of a glucose-glucose oxidase (GOD) reaction with a fluorescein (FL)-chemiluminescent (CL) reaction catalyzed by horseradish peroxidase. The FL-CL reaction could be conducted at pH 7.0, thus allowing the
in situ detection of hydrogen peroxide generated during the glucose-GOD reaction. The CL emission lasted for about 3min, and the calibration curve was linear over a glucose concentration range of 5.0×10
-8to 1.0×10
-5M. The relative standard deviation at 5.0×10
-7M glucose was 1.8% (
n=5). The present method was not subject to any interference from components normally present in serum. The results of glucose assays in two control sera were in good agreement with those conducted by the colorimetric method.
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Hiroaki KUBO, Yoshikazu UMIGUCHI, Mariko FUKUMOTO, Toshio KINOSHITA
1992 Volume 8 Issue 6 Pages
789-792
Published: December 10, 1992
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A fluorometric method has been developed for the determination of methotrexate in serum by high-performance liquid chromatography. Methotrexate after deproteinization with 2M perchloric acid was separated by reversed-phase chromatography with a neutral mobile phase (pH 7.0, 8% acetonitrile in 25mM phosphate buffer) containing 25mM hydrogen peroxide as a fluorogenic reagent, and was fluorometrically detected (Ex 379nm and Em 457nm)
via in-line oxidation at high temperature (160°C). The calibration curve could be made linear over the range 1×10
-6-1×10
-5M by injecting a volume of 20μl of deproteinized serum. The detection limit (signal-to-noise ratio=3) for methotrexate in serum was 2×10
-8M using a 50-μl aliquot of deproteinized serum. Comparison with the fluorescence polarization immunoassay gave a good correlation coefficient of 0.949.
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Akira MADA, Hidenao TOYODA, Toshio IMANARI
1992 Volume 8 Issue 6 Pages
793-797
Published: December 10, 1992
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A high-performance liquid chromatographic (HPLC) method with a carbon column was studied for the analysis of unsaturated disaccharides produced from glycosaminoglycans (GAGs). Most of the unsaturated disaccharides were separated on a carbon column (Carbonex, Tonen, Tokyo) under isocratic conditions using sodium carbonate buffer (pH 10.8) containing 3% or 3.5% acetonitrile. The disaccharides eluted were monitored by fluorescence detection using 2-cyanoacetamide as a postcolumn derivatizing reagent with excitation at 335nm and emission at 395nm. The unsaturated disaccharides produced from heparan sulfate family generally eluted in the order of tri-sulfated, di-sulfated, mono-sulfated and non-sulfated disaccharides, while the representative unsaturated disaccharides from chondroitin sulfate family were separated in a unique elution order: ΔDi-diS
B, ΔDi-4S, ΔDi-diS
E, ΔDi-0S, ΔDi-6S, ΔDi-HA and ΔDi-diS
D). The elution order of unsaturated disaccharides found with the proposed HPLC method using a carbon column differs greatly from that obtained by the conventional systems using chemical-bonded type silica columns.
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Toshihiko TOIDA, Guoning QIU, Takuya MATSUNAGA, Yoshinori SAGEHASHI, T ...
1992 Volume 8 Issue 6 Pages
799-804
Published: December 10, 1992
Released on J-STAGE: June 30, 2006
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A gas chromatography-mass spectrometry procedure for the determination of subnanomolar amounts of uronic acids derived from glycosaminoglycans (GAGs) is described. It involves stoichiometric reduction of carboxyl groups by sodium borodeuteride coupled with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, and methanolysis in methanolic hydrogen chloride (1.0M) at 80°C for 24h followed by trimethylsilylation. The uronic acid compositions of commercially available GAGs, such as dermatan sulfate from pig skin, heparan sulfate from bovine kidney, and heparin from bovine intestinal mucosa, were investigated by the present method. The results were confirmed by the quantitative
1H-NMR spectroscopy. The method is also applicable to complex samples such as human urinary GAGs.
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Chuichi HIRAYAMA, Masayo SAKATA, Hirotaka IHARA, Kunio OHKUMA, Makoto ...
1992 Volume 8 Issue 6 Pages
805-810
Published: December 10, 1992
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A novel adsorbent for the selective removal of endotoxin from various protein solutions has been prepared. The adsorbent comprises aminated poly(γ-methyl L-glutamate) (PMLG) spheres. The larger is the number of incorporated amino groups, the larger is the endotoxin-adsorption capacity of the adsorbent, the smaller is the pore size (exclusion of molecular weight;
Mlim) of the adsorbents, the smaller is the number of various proteins adsorbed. When
Mlim was smaller than 300 (as the molecular weight of polysaccharide) and the amino-group content was 3.2meq/g, the adsorbent selectively removed endotoxin from various endotoxin-containing samples, such as protein solutions, without affecting the effective substances, even at such a high ionic strength (μ) of 0.2-0.4. Consequently, aminated PMLG spheres with a certain pore size are considered to be a useful adsorbent for the removal of endotoxin from drugs and fluids for injection.
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Takashi YARITA, Yoshiyuki HORIMOTO, Joseph YAMADA, Akira NOMURA
1992 Volume 8 Issue 6 Pages
811-815
Published: December 10, 1992
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Packed-column supercritical fluid chromatography (SFC) was connected to an electron-capture detector (ECD) in order to determine polychlorinated biphenyls (PCBs) in the environment. The separation of PCBs was conducted on octadecylsilyl (ODS)-silica gel columns using carbon dioxide as a mobile phase without a modifier. The detection temperature of ECD was set up to 325°C according to the sensitivity to the PCBs. The capacity factor of the PCBs was affected by the density of the mobile phase and the pore structure of ODS-silica gel. The SFC-ECD system was applied to the determination of PCBs in sediment samples using a pressure-programming mode. The base-line drift of the chromatogram was accompanied by an increase in the pressure of carbon dioxide, which could be adjusted by an integrator. The packed-column SFC detected by ECD was found to be useful for determining PCBs in the environment.
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Yasuhiko NISHIKAWA
1992 Volume 8 Issue 6 Pages
817-822
Published: December 10, 1992
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The separation of synthetic pyrethroids by supercritical fluid chromatography was investigated using four packed columns and five fused silica capillary columns. The separation of 13 pyrethroids in one injection was attempted by varying both the column temperature and pressure program. With the packed columns various elution patterns were obtained. Using polar stationary phases of the capillary columns led to a successful separation of all the geometrical isomers, as well as all 13 pyrethroids in one run. The differences in the elution order among the capillary columns and the packed columns are discussed based on a consideration of the polarization and molecular interaction. The reversal of the elution order of pyrethroid geometrical isomers with the temperature is also discussed.
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Akinori JYO, Hiroaki EGAWA
1992 Volume 8 Issue 6 Pages
823-827
Published: December 10, 1992
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Conductivities and emf responses of plasticized poly(vinyl chloride) (PVC) and 1, 2-dichloroethane membranes containing thiocyanato(5, 10, 15, 20-tetraphenylporphyrinato)manganese(III) (Mn(TPP)SCN) were studied. The specific conductivities of these two types of membranes were much lower than those of the corresponding membranes containing an anion exchanger, Capriquat. However, a clear difference can be seen in the contribution of the membrane matrices to the overall conductivities between the two types of membranes containing Mn(TPP)SCN; the plasticized PVC matrix greatly contributes to the overall conductivities, whereas the liquid membrane matrix contributes little. In the emf response, Mn(TPP)SCN in the conductometrically inert liquid membrane matrix ideally responds to thiocyanate, whereas it is not able to function ideally in the conductometrically active plasticized PVC matrix. As a possible mechanism for the non-ideal emf response of Mn(TPP)SCN in the plasticized PVC matrix, the failure in co-ion repulsion, which is induced by negatively charged impurities in PVC, is proposed.
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Masato TOMINAGA, Kuniaki HAYASHI, Isao TANIGUCHI
1992 Volume 8 Issue 6 Pages
829-836
Published: December 10, 1992
Released on J-STAGE: June 30, 2006
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Using promoter-modified electrodes, electron-transfer reactions of cytochrome
c at an electrode and with cytochrome
c oxidase were examined. The electrochemical behavior of cytochromes
c from horse, bovine, chicken and tuna hearts at an electrode was similar to each other. Little difference was observed for the reactions between cytochromes
c of various origins and cytochrome
c oxidase from bovine in a phosphate buffer solution. Also, when a few (less than three) lysine residues of cytochrome
c were treated with 4-chloro-3, 5-dinitrobenzoic acid (CDNP) or 2, 4-dinitrofluorobenzene (DNP), the electrode reaction of the modified (especially, mono-substituted) cytochrome
c still showed no significant difference from that of the native one. On the other hand, the electron-transfer reaction between CDNP- or DNP-substituted cytochrome
c at lysine 13 and/or 72 and cytochrome
c oxidase was greatly affected, even when only one or two lysine residues of cytochrome
c were modified. Since the cytochrome
c molecules of different origins examined have about 3-19 differences in their amino acid sequences, but most lysine residues remain invariant, the present results indicate that lysine residues of cytochrome
c play an important role in the interaction with cytochrome
c oxidase; however, the promoter modified electrode surface does not recognize cytochrome
c molecule very rigorously. The present study also shows that electrochemical techniques with the aid of functional electrodes are applicable as useful, convenient methods to analyze the biological reactions of proteins.
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Yoshiaki KURAUCHI, Ryo HAYASHI, Naoyoshi EGASHIRA, Kazuya OHGA
1992 Volume 8 Issue 6 Pages
837-840
Published: December 10, 1992
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A bifurcated fiber-optic sensor for Zn
2+, Cd
2+ and Ga
3+ ions was fabricated. Chitosan modified with 5-formyl-3-hydroxy-4-hydroxymethyl-2-methylpyridine was immobilized on an agarose gel and used as a fluorogenic probe. The reproducibility of the response to Zn
2+ was within 5% in eight successive measurements at 5.0×10
-5M (1M=1mol dm
-3). A linear relationship with a correlation coefficient of 0.994 was obtained in the Zn
2+ concentration range of 0-2.0×10
-5M, and the detection limit was 1.0×10
-6M (
S/N=3). Cd
2+ and Ga
3+ ions were also detected, though with sensitivities somewhat lower than that for Zn
2+.
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Salah M. SULTAN, Fakhr-Eldin O. SULIMAN
1992 Volume 8 Issue 6 Pages
841-843
Published: December 10, 1992
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An accurate reproducible flow injection spectrophotometric method for the assay of promethazine was developed using cerium(IV) as an oxidant. The super modified simplex program was utilized for the optimization of dependant parameters. In the method, a 110μl drug sample was injected into a flowing stream of 6.19×10
-4M cerium(IV) dissolved in 0.512M H
2SO
4. The reaction takes place in a reaction coil 62cm long. Finally, the colored oxidized form of the drug was monitored at 515nm. Promethazine in the range 60-200ppm with a 200-sample/h throughput was determined, 0.80% relative standard deviation being attained. The method was successfully applied to the determination of promethazine in proprietary drugs, its accuracy was statistically compared with the British Pharmacopoeia (BP) official method.
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Chang-Sheng RUI, Yasuhiko KATO, Kenji SONOMOTO
1992 Volume 8 Issue 6 Pages
845-850
Published: December 10, 1992
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A flow-injection biosensor system was developed for the simultaneous assay of urea and creatinine, with a single injection and one detector. The amperometric detection of urea or creatinine was based on coupled reactions of three sequentially aligned enzyme reactors, urease or creatinine deiminase, glutamate dehydrogenase and glutamate oxidase. Ammonia produced by the enzymatic hydrolysis of urea or creatinine was converted to glutamate, and the oxygen consumption due to the oxidation of glutamate by glutamate oxidase was detected with an oxygen electrode. A split and confluence of the flow stream between the injector and the glutamate dehydrogenase reactor resulted in a two-channel system. Double-peak recording was achieved by putting a delay coil at one of the two channels. The system gave linear calibration curves over a range of 0.1-5.0mM for both urea and creatinine. The assay procedure is simple and one run can be completed within 3min. The system was reproducible within 5% of the relative standard deviation.
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Takashi YAMAGUCHI, Zhang LIPING, Ken MATSUMOTO, Kikuo TERADA
1992 Volume 8 Issue 6 Pages
851-855
Published: December 10, 1992
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Poly(chlorotrifluoroethylene) resin (PCTFE) was found to adsorb some metal complexes, such as the complexes of Cd(II), Cu(II), Fe(III), Mn(II), Ni(II), and Zn(II) with 8-quinolinol and of Ag(I), Cd(II) and Cu(II) with Bismuthiol II (Bis II), and ion-associate complexes of Cd(II), Cu(II) and Zn(II) with 8-quinolinol-5-sulfonic acid (SOx) with tetrabutylammonium cation (TBA
+). The retention capacities of the resin for the Ox and Bis II complexes were greater than those of the ion-associate complexes with SOx. By a column method using 1.0g of the resin, Cu(II), Fe(III) and Ni(II) were quantitatively concentrated as their Ox-complexes at pH 8 and a flow rate of 100ml min
-1, and Ag(I) and Cu(II) complexes with Bis II at pH 2 and a flow rate of 220ml min
-1. The metal-Ox complexes were easily eluted with methanol, the SOx complexes with 0.1% tetrabutylammonium chloride (TBAC)-methanol solution, and the Bis II complexes with a 0.1% TBAC-acetone solution. A direct introduction of these organic eluates to a nebulizer of atomic absorption spectrometer improved the measurement sensitivity. The proposed method was applied to an analysis of trace metals in a tap-water sample.
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Hideji TANAKA, Maki KOUNO, Kensaku OKAMOTO, Shigeru SHIMOMURA, Hideyos ...
1992 Volume 8 Issue 6 Pages
857-861
Published: December 10, 1992
Released on J-STAGE: June 30, 2006
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Chromium(II) ions were produced through the reduction of chromium(III) ions by using a flow-type electrolytic cell, and applied to the cold vapor generation of mercury in the presence of iodide. The atomic fluorescence intensity of the vaporized mercury was determined at 253.7nm on an atomic fluorescence spectrometer coupled with a flow injection device. The chromium(II) reduction system could completely reduce the mercury-iodide complex, HgI
42-, to elemental mercury, thus enabling an atomic fluorescence determination. The addition of iodide ions (>10mg l
-1 as the final concentration) stabilized mercury ions as HgI
42- and showed no memory effect due to the adsorption of mercury on the inner walls of the system. Therefore, ample iodide ions were first added to sample solutions; the formed mercury-iodide complex was then reduced to elemental mercury using an on-line chromium(II) reduction system. The present method can be used to determine mercury at the μg l
-1 level in aqueous samples without any interference from coexisting iodide ions at a level as great as 100mg l
-1.
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Etsu YAMADA, Takeshi YAMADA, Masanori SATO
1992 Volume 8 Issue 6 Pages
863-868
Published: December 10, 1992
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A new method for the determination of trace mercury is proposed by using cold-vapor atomic absorption analysis after the reduction of mercury with a mixture of sodium tetrahydroborate (NaBH
4) and tin(II) chloride in acidic solution. Iodide up to 20mg/20ml did not interfere with the mercury determination, and 85% recovery of mercury was attained even in the presence of 100mg of iodide. The present method was successfully applied to the determination of mercury in complicated iodide-containing environmental samples such as wastewater discharged from universities, research institutes and so on. Furthermore, the mechanism of the interference of iodide in the determination of trace mercury was investigated electrochemically by pseudo-polarographic and potentiometric measurement.
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Masaomi TSUCHIYA, Yasuo IWANAMI
1992 Volume 8 Issue 6 Pages
869-872
Published: December 10, 1992
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A simple method has been developed for the determination of cobalt. The cobalt(III) complex of 2-diethylamino-5-nitroso-1, 4, 5, 6-tetrahydropyrimidine-4, 6-dione (ENPD) is soluble in water and its yellow complex, once formed, is stable even at pH 1.0, while other metal complexes decompose at this pH. The cobalt(III)-ENPD complex has a molar absorptivity of 6.3×10
4l mol
-1 cm
-1 at 385nm. The formation of the complex is quantitative over the pH range from 4.8 to 6.8. The molar ratio of cobalt(III) to ENPD in the complex is 1:3 according to the continuous variation method. The proposed method was satisfactorily applied to the determination of cobalt in various samples, such as monel, nimonic and magnet alloys.
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Shizuo FUJIWARA, Yuko NISHIMOTO
1992 Volume 8 Issue 6 Pages
873-874
Published: 1992
Released on J-STAGE: July 27, 2007
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Shizuo FUJIWARA, Yuko NISHIMOTO
1992 Volume 8 Issue 6 Pages
875-876
Published: 1992
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Zhi-Hong ZHONG, Takeko MATSUMURA-INOUE, Akio ICHIMURA
1992 Volume 8 Issue 6 Pages
877-879
Published: December 10, 1992
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Yasunori AOKI, Keiko YAMAGUCHI, Hideo ASAKAWA, Takashi KATAYAMA
1992 Volume 8 Issue 6 Pages
881-882
Published: December 10, 1992
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Hiroya HARINO, Keiichi KIMURA, Minoru TANAKA, Toshiyuki SHONO
1992 Volume 8 Issue 6 Pages
883-884
Published: December 10, 1992
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Shoji IMAI, Yasuhisa HAYASHI, Toshiyuki TANAKA, Kengo SAITO
1992 Volume 8 Issue 6 Pages
885-887
Published: December 10, 1992
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Tetsuharu IWATA, Masaru NAKAMURA, Masatoshi YAMAGUCHI
1992 Volume 8 Issue 6 Pages
889-892
Published: December 10, 1992
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Hisatake NARASAKI, Yoshinori KATO, Hiroaki KIMURA
1992 Volume 8 Issue 6 Pages
893-896
Published: December 10, 1992
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Susumu IKEGAMI, Haruhiko ISOMURA, Noboru TSUCHIMORI, Keiichi HAMADA, H ...
1992 Volume 8 Issue 6 Pages
897-898
Published: December 10, 1992
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Masahiko MAEKAWA, Susumu KITAGAWA, Tadashi TANIMURA, Megumu MUNAKATA, ...
1992 Volume 8 Issue 6 Pages
899-900
Published: December 10, 1992
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L. L. KOH, A. S. NG, Y. XU
1992 Volume 8 Issue 6 Pages
901-902
Published: December 10, 1992
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Yoshinobu YOKOMORI, Takatomo HAYAMI, Seiichi KONISHI, Chung-gi SHIN, Y ...
1992 Volume 8 Issue 6 Pages
903-904
Published: December 10, 1992
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Motoaki GOTO, Yuko TOUBAI, Hiroaki TAKAYANAGI, Kimio FURUHATA, Haruo O ...
1992 Volume 8 Issue 6 Pages
905-906
Published: December 10, 1992
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Nobuya NAGASHIMA, Eiji NAKANISHI, Osamu IKEMURA, Koji OHSUMI, Satoshi ...
1992 Volume 8 Issue 6 Pages
907-910
Published: December 10, 1992
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