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Showing papers by "Utsunomiya University published in 1985"


Journal ArticleDOI
TL;DR: In this article, a cross-spectral analysis method (CSAM) is applied for the precise determination of relative hypocenters of microearthquakes of Kikkuga (KKG) in Tochigi Prefecture.
Abstract: Temporal seismic observation at Kamikuga (KKG) in Tochigi Prefecture was carried out from December 18, 1982 to February 11, 1983. Four temporal stations have been installed and more than 300 seismic events have been observed. Cross-spectral analysis method (CSAM) are applied for the precise determination of relative hypocenters of microearthquakes. An earthquake swarm, which consists of events with very similar waveforms, was analyzed by CSAM. For some groups of similar earthquakes, it has been demonstrated that relative hypocenters are determined, with an accuracy of about 50 m. We found two kinds of such groups of similar earthquakes. The first kind is characterized by similar earthquakes, occurring in a very short time interval within a very small area. Characteristic separation among the hypocenters of similar events is smaller than a wavelength of P-waves. The second kind is characterized by similar events occurring rather intermittently in a region with a linear dimension much larger than the wavelength. Although the former would correspond to stick-slip similar events studied by many seismologists, the latter will be similar events controlled by frequency characteristics of propagation paths.

125 citations


Journal ArticleDOI
TL;DR: In this article, it was shown that the typical incompatible trace elements, Ba, Ce, F, Nb, Rb and Sr, preferentially moved toward the primitive basaltic magma during the partial melting of metasomatized upper mantle peridotites.

62 citations


Journal ArticleDOI
TL;DR: In this article, a monochromatic light spot of 0.5 mm in diamter was obtained at the fixed sample position with the aid of a toroidal postfocussing mirror.
Abstract: A new type of constant deviation monochromator equipped with three interchangeable concave gratings (600, 1200 and 2400 grooves/mm) of 2 m radius of curvature was designed and built specifically for angle resolved photoemission spectroscopy at photon energies ranging from 20 to 160 eV. The exit slit of the monochromator is at a fixed position, whereas the entrance slit moves, simultaneously with grating rotation, along the direction of the incident light so as to minimize the amount of defocusing. A monochromatic light spot of 0.5 mm in diamter was obtained at the fixed sample position with the aid of a toroidal postfocussing mirror. It is found over the energy range concerned that the resolution is bettern than 1700 with 25 µm slits, and the photon flux obtained behind the toroidal mirror for a horizontal acceptance angle 0.5 mrad is 4×1010 photons/s when the width of the slits is 50 µm and the stored current for synchrotron radiation is 100 mA.

28 citations


Journal ArticleDOI
TL;DR: In this paper, the F-K X-ray absorption near edge structure (XANES) spectra of alkaline-earth fluorides have been measured with a high energy resolution using synchrotron radiation.
Abstract: F-K X-ray absorption near edge structure (XANES) spectra of alkaline-earth fluorides have been measured with a high energy resolution using synchrotron radiation. Calculations for the observed XANES spectra have been also carried out by use of the short-range order multiple scattering theory. By comparing the observed spectra with the calculated results, we can estimate the effective anion charge distribution of -0.6, -0.65 and -0.795 for MgF 2 , CaF 2 and SrF 2 , respectively. These calculated F K-edge XANES spectra of alkaline-earth fluorides are more sensitive to the charge distribution than cation K-edge XANES.

26 citations


Journal ArticleDOI
TL;DR: A new non-enveloped small bacilliform virus of ca.
Abstract: A new non-enveloped small bacilliform virus of ca. 28×120-130nm was found from canna plant (Canna sp.) showing systemic symptoms of veinal yellowing or necrosis, mottling and stunting collected at Iwai of Ibaragi prefecture in 1978. In thin sections, the virus particles were mainly observed as singles or aggregates in the cytoplasm of phloem cells. Virus-infected cells were also characterized by the development of vesicular structures. Since no small bacilliform virus has been reported from canna so far, the virus was designated as canna yellow mottle virus (CYMV). Small bacilliform viruses may be classified into two groups of cacao swollen shoot virus (CSSV) and orchid fleck virus (OFV) basing on their natures. The CYMV seemed to belong to the CSSV group.

18 citations


Journal ArticleDOI
TL;DR: The L 2,3 (2p→3d) white lines have been observed in the spectra of CrF 3, MnF 2, FeF 2, Co 2, NiF 2 and ZnF 2 as discussed by the authors.
Abstract: The L 2,3 absorption spectra of 3d transition-metal in CrF 3 , MnF 2 , FeF 2 , Co 2 , NiF 2 and ZnF 2 have been measured with a newly designed 10m grazing incidence monochromator. The L 2,3 (2p→3d) “white lines” have been observed in the spectra of CrF 3 , MnF 2 , FeF 2 , CoF 2 and NiF 2 . On the contrary, ZnF 2 does not exhibit sharp white lines, but only weak peaks. This is ascribed to the absence of an empty 3d level. Fine structures of the L 2,3 white lines are interpreted as the multiplet splitting due to the interaction between a metal 2p hole and localized unraired 3d electrons. Observed spectra are comrared with the spectra theoretically calculated by Gupta and Sen and also by Yamaguchi et al .

17 citations


Journal ArticleDOI
TL;DR: In this paper, a series of triaxial compression tests is performed on mixed soil samples having a wide range of plasticity index, and the pore pressure is measured for assessing the residual effective stress in the ideal, perfect and undisturbed samples respectively.

17 citations



Journal ArticleDOI
TL;DR: In this article, the reversed phase liquid chromatography of several metal chelates with 2-(5bromo-2pyridylazo)-5-(N-propyl-N-sulphopropylamino)phenol (5-Br-PAPS) on a C18-bonded stationary phase using methanol-water as the mobile phase was investigated.

11 citations


Journal ArticleDOI
TL;DR: In this paper, the properties of silver-tin alloys from a pyrophosphate bath have been studied to obtain data for using as functional deposits, and the effect of cathode current density on them was remarkable.

10 citations



Journal ArticleDOI
TL;DR: In this article, a multiple scanning method was developed and applied to detect cosmic heavy nuclei, which is very useful for detecting particles with low flux intensity, like for searching magnetic monopoles or for measuring the high energy spectra of cosmic nuclei.
Abstract: A new multiple scanning method is developed and applied to detect cosmic heavy nuclei. The plastic track detectors CR-39 exposed to cosmic heavy nuclei are over-etched in 8.0N NaOH for 94 h at 80°C. We found that the etched cones can easily be scanned on the plastic plates without using an optical microscope. The trajectories of heavy nuclei can be reconstructed with the naked eyes by superposing four or more over-etched plates. The charge detection threshold is obtained by this method, and appears to be 10. The charge resolution is estimated to be 1.0 charge units for iron nuclei. By adopting this method, the scanning time is much shortened and CR-39 plastic chamber size can easily be scaled up. The method is very useful for detecting particles with low flux intensity, like for searching magnetic monopoles or for measuring the high energy spectra of cosmic heavy nuclei.

Journal ArticleDOI
TL;DR: In this paper, the K absorption-edge spectra of the ligand chlorine ion in square-planar complex compounds cis- and trans-Pt(NH3)2Cl2, trans-[Pd(NH 3 2Cl2], and (NH4)2PdCl4] were reported and discussed in connection with the chlorine K absorption spectra.

Journal ArticleDOI
TL;DR: In this article, the L 2,3 absorption spectra of the metal ions in layered 3D transition-metal thiophosphates MPS 3 (Mn, Fe, Ni) have been measured.
Abstract: The L 2,3 absorption spectra of the metal ions in layered 3d transition-metal thiophosphates MPS 3 (M=Mn, Fe, Ni) have been measured. Results are discussed by comparing with the spectra of other transition-metal compounds and with the theoretical calculation by Gupta and Sen. The spectra are interpreted in terms of the multiplet structure which results from the interaction between a 2p hole and 3d electrons of a localized metal ion. Since the p-d interaction is reduced by the delocalization of metal 3d orbitals, the multiplet structure becomes inconspicuous as covalency is increased. It is concluded that the near-edge structure of the metal L 2.3 absorption spectrum of an ionic 3d transition-metal compound exhibits the multiplet structure, while that of a covalent compound represents the projected density of states of the conduction band.


Journal ArticleDOI
TL;DR: Analyse des spectres d'absorption RX de l'ion potassium dans dix sels mineraux et attribution des pics observes aux transitions aux etats lies et aux etat de continuum as mentioned in this paper.
Abstract: Analyse des spectres d'absorption RX de l'ion potassium dans dix sels mineraux et attribution des pics observes aux transitions aux etats lies et aux etats de continuum

Journal ArticleDOI
TL;DR: In this paper, the lateral and longitudinal distribution of hadronic cascade showers initiated by 300 GeV protons in lead and iron was determined with a minimum of distortion that was inevitably introduced by an insertion of detectors between the metal plates.
Abstract: The profile of three-dimensional hadronic cascade showers initiated by 300 GeV protons in lead and iron is investigated using photo-sensitive films. The lateral and longitudinal distribution of shower particles are determined with a minimum of distortion that is inevitably introduced by an insertion of detectors between the metal plates.

Journal ArticleDOI
TL;DR: In this article, the angular distribution of emitted alpha particles has been investigated for several ranges of charge numbers of projectile fragments, and the result of analysis shows that the emission angle distribution of alpha particles at large angles cannot be explained by the single mechanism of the fragmentation from a clean cut spectator.
Abstract: 1.88 GeV/n Fe beams of LBL were vertically irradiated to the chambers composed of a pile of plastic track detector (CR-39) and nuclear emulsion plates. The charge number of projectile fragments in Fe interactions was carefully examined by use of CR-39. The angular distributions of emitted alpha particles have been investigated for several ranges of charge numbers of projectile fragments. The result of analysis shows that the emission angle distribution of alpha particles at large angles cannot be explained by the single mechanism of the fragmentation from a clean cut spectator. For events of central collisions with smaller charges of projectile fragments, the effective temperature for the production of alpha particles turns out to be much higher than that of the evaporation theory. The results are applied to the calibration of primary energy estimation by the opening angles of alpha particles.

Journal ArticleDOI
TL;DR: In this article, the theory d'Ablowitz-kaup-Newell-Segur for le systeme matriciel N×N, on obtient l'equation d'evolution non lineaire generale associee, dans laquelle l'operateur de recurrence est directement deduit de la condition d'integrabilite.
Abstract: Dans la theorie d'Ablowitz-Kaup-Newell-Segur pour le systeme matriciel N×N, on obtient l'equation d'evolution non lineaire generale associee, dans laquelle l'operateur de recurrence est directement deduit de la condition d'integrabilite. On considere la loi de superposition non lineaire et les symetries associees aux equations d'evolution


Journal ArticleDOI
TL;DR: Na, K, Ca, Mgを分析し各ペクチネートの金属元素とNaClのNa, の混合コンプレックス溶液にNaClを添加・脱塩してからNa, “K>Mg>Caの順で起こりや
Abstract: 既報1)で大根ペクチンのK, Ca, MgはNaClのNaとイオン交換することを推察した。この現象は今まで明らかにされていなかったことであるし,さらにペクチンの化学反応性の基礎的知見としても重要と思われる。従って,本報では1%HCl含有メチルアルコールでの洗浄によって金属元素をほぼ除去した大根ペクチンにKCl,CaCl2・2H2O, MgCl2・6H2Oを混合・脱塩することによって各金属元素を付加させたK-, Ca-, Mg-ペクチネート及びそのらの混合コンプレックス溶液にNaClを添加・脱塩してからNa, K, Ca, Mgを分析し各ペクチネートの金属元素とNaClのNaとのイオン交換性を検討した。なお,調製した各ペクチネートは赤外線吸収スペクトルを測定して,各金属の結合を確認した。そして,その結果,各ペクチネートはNaClの添加によりそれぞれの金属元素が減少し,それとは逆にNaが増加した。そして,その現象はK-ペクチネートが最も顕著であり,以下Mg-ペクチネート,混合コンプレックスと続き,Ca-ペクチネートのCaの減少とNaの増加が最も少なかった。しかし,これら金属の増減には当量関係が認められなかった。以上の結果からペクチンに結合しているK, Ca, MgはNaClのNaとイオン交換反応を起こし,さらにその反応はK>Mg>Caの順で起こりやすいことが明らかになった。

Journal ArticleDOI
TL;DR: The results suggest that not a small amount of the glycylprolylhydroxyproline peptide injected is hydrolyzed in tissues of animals and the free proline derived is used for protein synthesis and/or further degraded to expired carbon dioxide.
Abstract: To examine the origin of urinary hydroxyproline peptides, the metabolism of the radioactive tripeptide, glycyl-14C-prolylhydroxyproline, was investigated in normal young rats in vivo. The radioactive tripeptide was synthesized from glycine, L-(U-14C)proline and hydroxy-L-proline in our laboratory. The distributions of the radioactivity in body protein, lipid and soluble fractions were 23.7, 1.8 and 0.12% of the injected dose, respectively, 56 hr after the intraperitoneal injection of the 14C-tripeptide. The excretions of the radioactivity into expired carbon dioxide and urine were 29.6 and 34.2% of the injected dose, respectively, and large proportions of both the 14C excretions occurred during the first 12hr. The results suggest that not a small amount of the glycylprolylhydroxyproline peptide injected is hydrolyzed in tissues of animals and the free proline derived is used for protein synthesis and/or further degraded to expired carbon dioxide.

Journal ArticleDOI
TL;DR: It’s time to dust off the dustbin lids and dustbin hats and dust off that dustpan.
Abstract: ナプロアニリドによる水稲と広葉, カヤツリグサ科雑草間の選択殺草作用, および実用的使用場面を考慮した試験で水稲およびウリカワの吸収性の差について検討した. 出芽前処理におけるナプロアニリドによる水稲のED50は, ホタルイ, ウリカワに比べおのおの約130倍および380倍高かった. 出芽後処理において, ナプロアニリドはホタルイ, ウリカワ, タマガヤツリ, コナギおよびキカシグサに対して15g/a a. i. でほぼ90%の阻害を示し, 3g/a a. i. では完全に枯死した. これに対して水稲では60g/a a. i. までもほとんど抑制作用は見られなかった. 14C-ナプロアニリドは, 水稲よりウリカワで2倍吸収された. 化合物の吸収は, 水稲では茎基部と根部により吸収するが, 上部への移行は著しく制限された. ウリカワでは茎葉, 塊茎および根部に化合物が一様に分布した.

Journal ArticleDOI
TL;DR: In this paper, the energy spectrum of cosmic-ray Fe-nucleus has been measured from 4 GeV/n to beyond 100 GeV /n using emulsion chambers exposed by a balloon launched from Sanriku, Japan.
Abstract: Energy spectrum of cosmic-ray Fe-nucleus has been measured from 4 GeV/n to beyond 100 GeV/n. The data were obtained using emulsion chambers exposed by a balloon launched from Sanriku, Japan. The energy of Fe nuclei was estimated by the opening angle method, the calibration of which was made using accelerator beams of 1.88 GeV/n Fe. The spectral index of Fe we obtained is -2.45±0.04 in the range from 10 to 200 GeV/n, confirming the previous results obtained by different methods and proving the powerfulness of the opening angle method for cosmic rays.

Journal ArticleDOI
TL;DR: In this article, a convection Stefan problem with Newton's radiation condition was solved by a power series method based on the method of Lagrange-Burmann expansion, where the nonlinear interfacial and boundary conditions reduce to LagrangeBurmann expansions for new dependent variables from which the interface position and the wall temperature functions are recovered by inverting the transformation.
Abstract: A convection Stefan problem with Newton's radiation condition has been solved by a power series method based on the method of Lagrange-Burmann expansion. After formulating the moving boundary problem as a fixed boundary problem by variable transformation, a series solution is developed in powers of a new `time-like' variable. The nonlinear interfacial and boundary conditions reduce to Lagrange-Burmann expansions for new dependent variables from which the interface position and the wall temperature functions are recovered by inverting the transformation. Compared with the classical series solution, the convergence of the new expansions is markedly improved, in fact extending over the entire physical time domain of t ∈[0, ∞) for sufficiently small Stefan number.

Journal ArticleDOI
TL;DR: In this paper, α-Phenylsulfonyl alkanamides were synthesized, and their herbicidal activities were tested under paddy conditions, showing that the activity of the sulfonyl compound was superior to those of sulfinyl and thio compounds.
Abstract: α-Phenylsulfonyl alkanamides were synthesized, and their herbicidal activities were tested under paddy conditions. Some of the α-phenylsulfonyl propanamides showed a high herbicidal activity against paddy weeds with no significant effect on rice plants. The activity of the sulfonyl compound was superior to those of the sulfinyl and thio compounds.

Journal ArticleDOI
TL;DR: In this paper, Ncyl- and N-sulfonyl-N-(2,3-epoxypropyl)benzenesulfonamide derivatives were synthesized and their herbicidal activities were tested against barnyardgrass and rice plants by the pot and the petri dish tests.
Abstract: N-Acyl- and N-sulfonyl-N-(2,3-epoxypropyl)benzenesulfonamide derivatives were synthesized and their herbicidal activities were tested against barnyardgrass and rice plants by the pot and the petri dish tests in order to examine the structural requirements for herbicidal activity in N-(2,3-epoxypropyl)benzenesulfonamide derivatives. The N-sulfonylbenzenesulfonamide derivatives exhibited higher activity against barnyardgrass than the N-acylbenzenesulfonamide derivatives, and were found to be as active as N-(2,3-epoxypropyl)-N-(α-methylbenzyl)benzenesulfonamide. Some of the N-sulfonylbenzenesulfonamide derivatives showed high selectivity towards barnyardgrass and rice plants at their germination stage.

01 Aug 1985
TL;DR: In this article, the energy spectra of high energy gamma-rays and hadrons were obtained by the emulsion chamber with 40 c.u. thickness at Mt. Fuji (3750 m).
Abstract: The energy spectra of high energy gamma-rays and hadrons were obtained by the emulsion chamber with 40 c.u. thickness at Mt. Fuji (3750 m). These results are compared with the Monte Carlo calculation based on the same model which is used in a family analysis. Our data are compatible with the model of heavy-enriched primary and scaling in the fragmentation region.

Journal ArticleDOI
TL;DR: In this article, a case record of design, construction and field observation of a quaywall on coral debris mixed soil is described, where the effective stress analysis was employed by tracing the change in distribution of the excess pore water pressure with time throughout the series of construction stages.

Journal ArticleDOI
TL;DR: In this paper, the properties of silver-tin alloys from a pyrophosphate bath have been studied to obtain data for using as functional deposits, and the effect of cathode current density on them was remarkable.
Abstract: Properties of silver-tin alloys deposits from a pyrophosphate bath have been studied to obtain data for using as functional deposits. Cathode current efficiency and the throwing power tended to decrease in current density. The highest value of the throwing power was obtained at pH 9, no pH effect on current efficiency being found. Satisfactory deposits were gained at the total metal concentration of 40 gl −1 in the depositing bath, when tin content was 10 wt. % and hardness was Hv 186. The pH of depositing bath had a small effect on both composition and hardness of alloy deposits, however, the effect of cathode current density on them was remarkable. Increasing current density increased tin content of deposits and decreased hardness. The deposit of silver-tin (90/10) alloy had a different crystal structure from that of a metallurgical alloy and a smooth surface was obtained according to the SEM photographs. Then it was observed that alloying silver and tin minuted the crystal grain. This crystal fineness was found to mainly cause the increase of hardness. With respect to the electrodeposition of the silver-tin alloy from a pyrophosphate bath, electrodeposits with various crystal structure can be obtained by the electrolytic condition. Further, current efficiency, surface condition and properties were found to be controlled by the crystal structure of electrodeposit.