K. Sasaki

Fractional flux periodicity of a twisted planar square lattice (2004)

This paper describes a study on fractional flux periodicity of the ground state in planar systems made from a square lattice whose boundary is compacted into a torus. It is pointed out that, in the...

Local Energy Gap in Deformed Carbon Nanotubes (2004)

We present fractional flux periodicity in the ground state of planar systems made of a square lattice whose boundary is compacted into a torus. The ground-state energy shows a fractional period of...

Sensitive measurements of electric field distributions in low-pressure Ar plasmas by laser-induced fluorescence-dip spectroscopy (2004)

The effects of graphite surface geometrical deformation on the dynamics of conducting electrons are investigated theoretically. The analysis is performed within the framework of a deformation-induced...

Takizawa, K., Sasaki, K., Kono, A.

Laser-induced fluorescence-dip (LIF-dip) spectroscopy of Ar was used for measuring the distributions of sheath electric fields in low-pressure, inductively-coupled Ar plasmas. A sensitive detection...

Observation of the discrete transition of optically trapped particle position in the vicinity of an interface (2004)

Takasaki, H, Sasaki, K

Discrete transitions in the position of a particle optically trapped in the vicinity of an interface are observed using a nanometer position sensing system. These discrete transitions in the position...

Ion acceleration during internal magnetic reconnection events in TST-2 (2004)

Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...

Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...

Transport barrier formation by LHCD on TRIAM-1M (2004)

Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...

Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...

Ion acceleration during internal magnetic reconnection events in TST-2 (2004)

Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...

Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...

Transport barrier formation by LHCD on TRIAM-1M (2004)

Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...

Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...

Software Evolution Support Using Traceability Link between UML diagrams (2004)

Omote, H, Sasaki, K, Kaiya, H, Kaijiri, K

Evolution is indispensable process in software development, so the systematic treatment of evolution is very important. UML becomes a de facto standard for notation in object oriented development,...

Optical and electrochromic properties of RF reactively sputtered WO_3 films (2003)

Washizu, E., Yamamoto, A., Abe, Y., Kawamura, M., Sasaki, K., 阿部, 良夫, ...

The effects of deposition conditions, including substrate temperature and sputtering gas　pressure, on the optical and electrochromic (EC) properties of WO_3 films prepared by RF　reactive...

Aharonov-Bohm effect in higher genus materials (2003)

Excited nucleon spectrum from lattice QCD with maximum entropy method (2003)

Flux periodicity of conducting electrons on a closed surface with genus two $g=2$ (double torus) are investigated theoretically. We examine flux periodicity of the ground-state energy and of the wave...

Sasaki, K., Sasaki, S., Hatsuda, T., Asakawa, M.

We study excited states of the nucleon in quenched lattice QCD with the spectral analysis using the maximum entropy method. Our simulations are performed on three lattice sizes $16^3\times 32$,...

Kinetics of hydrogen atoms in high-density CF_4 /H_2 plasmas studied by (2+1)-photon laser-induced fluorescence spectroscopy (2003)

Sasaki, K., Okamoto, M.

We measured the distribution of absolute H atom density in high-density, low-pressure CF_4 plasmas with the addition of H2 by (2+1)-photon laser-induced fluorescence spectroscopy. The H atom density...

Trade-off Analysis between Security Policies for Java Mobile Codes and Requirements for Java Application (2003)

Kaiya, H, Sasaki, K, Maebashi, Y, Kaijiri, K

RE 2003, Monterey Bay, California, Sep. 2003

Prevalence of open-angle glaucoma in Iceland: Reykjavik Eye Study (2003)

Jonasson, F, Damji, K F, Arnarsson, A, Sverrisson, T, Wang, L, Sasaki, H, ...

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Characteristic Behavior of Toroidal Carbon Nanotubes: Kinematics of Persistent Currents (2003)

Sasaki, K., Kawazoe, Y.

The electrical properties of a carbon nanotube depend strongly on its lattice structure as defined by chiral and translational vectors. A toroidal shape for a nanotube allows various twisted...

The $\Lambda \Lambda \to YN$ Weak Transition in Double-$\Lambda$ Hypernuclei (2003)

Sasaki, K., Inoue, T., Oka, M.

We calculate the $\Lambda \Lambda \to YN$ transition rate of ${^{\phantom{\Lambda}6}_{\Lambda \Lambda}}$He by the hybrid picture, the $\pi$ and $K$ exchanges plus the direct quark processes. It is...

Sensitive measurement of electric field in a collisionless dc sheath by laser-induced fluorescence-dip spectroscopy (2003)

Sasaki, K., Takizawa, K.

The 30th International Conference on Plasma Science, IEEE Conference Record - Abstracts., 2-5 June 2003, p.122

Dynamics of laser-ablation plume and ambient gas visualized by two-dimensional laser-induced fluorescence (2003)

Watari, H., Sasaki, K.

The 30th International Conference on Plasma Science, IEEE Conference Record - Abstracts.，2-5 June 2003, p.367

Chemical surface exchange of oxygen on Y2O3-stabilized ZrO2 (2003)

Catalytic activity of oxide-supported Pd catalysts on a honeycomb for low-temperature methane oxidation (2003)

Kikuchi, R, Maeda, S, Sasaki, K, Wennerstrom, S, Ozawa, Y, Eguchi, K

High temperature catalytic combustion of methane and propane over hexaaluminate catalysts: NOx emission characteristics (2003)

Kikuchi, R, Tanaka, Y, Sasaki, K, Eguchi, K

Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide (2003)

Tanaka, Y, Utaka, T, Kikuchi, R, Takeguchi, T, Sasaki, K, Eguchi, K

CO removal from reformed fuel over Cu/ZnO/Al2O3 catalysts prepared by impregnation and coprecipitation methods (2003)

Tanaka, Y, Utaka, T, Kikuchi, R, Sasaki, K, Eguchi, K

NOx sorption-desorption mechanism of ZrO2-based oxide (2003)

Kikuyama, S, Matsukuma, I, Takeguchi, T, Kikuchi, R, Eguchi, K, Sasaki, K

Catalytic autothermal reforming of methane and propane over supported metal catalysts (2003)

Ayabe, S, Omoto, H, Utaka, T, Kikuchi, R, Sasaki, K, Teraoka, Y, ...

Water gas shift reaction over Cu-based mixed oxides for CO removal from the reformed fuels (2003)

Tanaka, Y, Utaka, T, Kikuchi, R, Sasaki, K, Eguchi, K

Development of a spin flipper for an application of a neutron magnetic device (2003)

Oku, T, Sakai, K, Adachi, T, Ikeda, K, Shimizu, HM, Maruyama, R, ...

Dynamics of laser-ablation Ti plasmas studied by laser-induced fluorescence imaging spectroscopy (2002)

Sasaki, K., Matsui, S., Ito, H., Kadota, K.

The distributions of Ti^+ and Ti densities in laser-ablation Ti plasmas were visualized by laser-induced fluorescence imaging spectroscopy. The absolute Ti density was determined by ultraviolet...

Bayesian approach to the first excited nucleon state in lattice QCD (2002)

Sasaki, S., Sasaki, K., Hatsuda, T., Asakawa, M.

We present preliminary results from the first attempt to reconstruct the spectral function in the nucleon and $\Delta$ channels from lattice QCD data using the maximum entropy method (MEM). An...

Lattice-matched HfN buffer layers for epitaxy of GaN on Si (2002)

R. Armitage, Q. Yang, H. Feick, J. Gebauer, E. R. Weber, S. Shinkai, ...

Instability of capacitance mode in multi-walled nanotubes (2002)

Vacuum polarization in nanotubes (2002)

Conditions for intra and inter layer Coulomb interactions in multi-walled carbon nanotubes are derived from stability of capacitance excitations. It is pointed out, supposing the stability conditions...

Sasaki, K., Farajian, A. A., Mizuseki, H., Kawazoe, Y.

This paper has been withdrawn by the author due to a crucial error.

Effective Screening of Localized Charged Perturbations in Metallic Nanotubes: Roles of Massive Bands (2002)

Sasaki, K., Farajian, A. A., Mizuseki, H., Kawazoe, Y.

The massive-band effects on screening behavior of metallic carbon nanotubes are theoretically investigated using two different methods; continuous and lattice quantum theories. Both approaches show...

Nonmesonic weak decay of light hypernuclei with coherent $\Sigma$ mixing (2002)

Sasaki, K., Inoue, T., Oka, M.

Nonmesonic weak decays of the A=4, and 5 hypernuclei are studied. The short range parts of the hyperon-nucleon weak interactions are described by the direct quark (DQ) weak transition potential,...

Distributions of C_2 and C_3 radical densities in laser-ablation carbon plumes measured by laser-induced fluorescence imaging spectroscopy (2002)

Sasaki, K., Wakasaki, T., Matsui, S., Kadota, K.

We measured temporal variations of the distributions of C_2 and C_3 radical densities in carbon plumes produced by laser ablation of graphite in ambient He gas. Laser-induced fluorescence imaging...

Fuel flexibility in power generation by solid oxide fuel cells (2002)

Eguchi, K, Kojo, H, Takeguchi, T, Kikuchi, R, Sasaki, K

Low-temperature methane oxidation over oxide-supported Pd catalysts: inhibitory effect of water vapor (2002)

Kikuchi, R, Maeda, S, Sasaki, K, Wennerstrom, S, Eguchi, K

Current-voltage characteristics and impedance analysis of solid oxide fuel cells for mixed H-2 and CO gases (2002)

Sasaki, K, Hori, Y, Kikuchi, R, Eguchi, K, Ueno, A, Takeuchi, H, ...

A role of components in Pt-ZrO2/Al2O3 as a sorbent for removal of NO and NO2 (2002)

Kikuyama, S, Matsukuma, I, Kikuchi, R, Sasaki, K, Eguchi, K

Impedance analysis of electronic transport in dye-sensitized solar cells (2002)

Hoshikawa, T, Kikuchi, R, Sasaki, K, Eguchi, K

Direct-alcohol/hydrocarbon SOFCs: Comparison of power generation characteristics for various fuels (2002)

Sasaki, K, Kojo, H, Hori, Y, Kikuchi, R, Eguchi, K

Development of zirconia-based oxide sorbents for removal of NO and NO2 (2002)

Matsukuma, I, Kikuyama, S, Kikuchi, R, Sasaki, K, Eguchi, K

Neutron-beam control using a magnetic doublet (2002)

Oku, T, Adachi, T, Sakai, K, Shimizu, HM, Sasaki, K, Iwasa, H, ...

Charge Screening Effect in Metallic Carbon Nanotubes (2001)

Positivity constraints on photon structure functions (2001)

Charge screening effect in metallic carbon nanotubes is investigated in a model including the one-dimensional long-range Coulomb interaction. It is pointed out that an external charge which is being...

Sasaki, K., Soffer, J., Uematsu, T.

We investigate the positivity constraints for the structure functions of both virtual and real photon. From the Cauchy-Schwarz inequality we derive three positivity conditions for the general virtual...

Logic and Provability (2001)

Vacuum structure of Toroidal Carbon Nanotubes (2001)

A measurement method of absolute hydrogen atom density in plasmas by (2＋1）-photon laser-induced fluorescence spectroscopy (2001)

Low energy excitations in carbon nanotubes can be described by an effective field theory of two components spinor. It is pointed out that the chiral anomaly in 1+1 dimensions should be observed in a...

Sasaki, K., Nakamoto, M., Kadota, K.

A technique of (2＋1)-photon laser-induced fluorescence (LIF) spectroscopy has been developed for measuring hydrogen atom density in plasmas. In this method, the following two-step excitation scheme...

Chiral Anomaly in Toroidal Carbon Nanotubes (2001)

Absorption analysis of a single microparticle by optical force measurement (2001)

It is pointed out that the chiral anomaly in 1+1 dimensions should be observed in toroidal carbon nanotubes on a planar geometry with varying magnetic field. We show that the chiral anomaly is...

Takasaki, H, Sasaki, K

A method is proposed for precisely and instantaneously analyzing the optical absorption of a single microparticle. This method is based on the measurement of radiation pressure exerted on a particle,...

Characterization of adsorbed water layers on Y2O3-doped ZrO2 (2001)

Raz, S., Sasaki, K., Maier, J., Riess, I.

Thick-film coating of hexaaluminate catalyst on ceramic substrates and its catalytic activity for high-temperature methane combustion (2001)

Kikuchi, R, Takeda, K, Sekizawa, K, Sasaki, K, Eguchi, K

Effect of preparation methods on NOx removal ability by sorption in Pt-ZrO2-Al2O3 (2001)

Kikuyama, S, Matsukuma, I, Kikuchi, R, Sasaki, K, Eguchi, K

Characteristics of C_3 radicals in high-density C_4F_8 plasmas studied by laser-induced fluorescence spectroscopy (2000)

Takizawa, K., Sasaki, K., Kadota, K.

Spatial and temporal variations of C_3 density in high-density octafluorocyclobutane (c-C_4F_8) plasmas were examined using laser-induced fluorescence spectroscopy. The C_3 density varied slowly for...

"With the rule" astigmatism is not the rule in the elderly. Reykjavik Eye Study: a population based study of refraction and visual acuity in citizens of Reykjavik 50 years and older. Iceland-Japan Co-Working Study Groups. (2000)

Gudmundsdottir, E, Jonasson, F, Jonsson, V, Stefansson, E, Sasaki, H, Sasaki, K

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Surface production of CF, CF_2 , and C_2 radicals in high-density CF_4/H_2 plasmas (2000)

Sasaki, K., Furukawa, H., Kadota, K., Suzuki, C.

Surface production of CF, CF_2 , and C_2 radicals in high-density CF_4/H_2 plasmas was examined using laser-induced fluorescence spectroscopy. No significant amount of surface production was observed...

Diffeomorphism on Horizon as an Asymptotic Isometry of Schwarzschild Black Hole (2000)

Hotta, M., Sasaki, K., Sasaki, T.

It is argued that the diffeomorphism on the horizontal sphere can be regarded as a nontrivial asymptotic isometry of the Schwarzschild black hole. We propose a new boundary condition of asymptotic...

Generalized Entropy Composition with Different q Indices: A Trial (2000)

Sasaki, K., Hotta, M.

We analyze systematically composable composite entropy of two Tsallis subsystems with different q indices. H-theorem and thermal balance relation are commented.

Degassing effect in water: sterilizing effect (2000)

Saitô, K, Sasaki, K, Seki, E, Arai, K, Negishi, K, Higuchi, T

Volumenkinetik und Grenzflächeneffekte in oxidischen Funktionskeramiken (2000)

Leonhardt, M., Sasaki, K., Claus, J., Maier, J.

In situ EPR studies of chemical diffusion in oxides (2000)

Re-analysis of defect equilibria and transport parameters in Y2O3-stabilized ZrO2 using EPR and optical relaxation (2000)

The effect of annealing conditions on the physical properties of Nd0.67Sr0.33MnO3-δ (2000)

Schnelle, W., Poddar, A., Murugaraj, P., Gmelin, E., Kremer, R. K., Sasaki, K., ...

Toward Generalized Entropy Composition with Different q Indices and H-Theorem (1999)

Sasaki, K., Hotta, M.

An attempt is made to construct composable composite entropy with different $q$ indices of subsystems and address the H-theorem problem of the composite system. Though the H-theorem does not hold in...

Thermal and Tunneling Pair Creation of Quasiparticles in Quantum Hall Systems (1999)

Sasaki, K., Ezawa, Z. F.

We make a semiclassical analysis of thermal pair creations of quasiparticles at various filling factors in quantum Hall systems. It is argued that the gap energy is reduced considerably by the...

Weak Decay of $\Lambda$ in Nuclei : Quarks vs Mesons (1999)

Sasaki, K., Inoue, T., Oka, M.

Decays of $\Lambda$ in nuclei, nonmesonic mode, are studied by using the $\Lambda N \to NN$ weak transition potential derived from the meson exchange mechanism and the direct quark mechanism. The...

Quench and Mechanical Behaviour of an LHC Low-$\beta$ Quadrupole Model (1999)

Nakamoto, T, Tanaka, K, Yamamoto, A, Tsuchiya, K, Burkhardt, E E, Higashi, N, ...

A one meter model of the high gradient 70 mm aperture superconducting low-b quadrupole has been developed at KEK. The design field gradient is 240 T/m at a current of 7677 A with a superconducting...

Skyrmions and Quantum Hall Ferromagnets in Improved Composite-Boson Theory (1999)

Ezawa, Z. F., Sasaki, K.

An improved composite-boson theory of quantum Hall ferromagnets is proposed. It is tightly related with the microscopic wave-function theory. The characteristic feature is that the field operator...

Determination of fluorine atom density in reactive plasmas by vacuum ultraviolet absorption spectroscopy at 95.85 nm (1999)

Sasaki, K., Kawai, Y., Kadota, K.

Vacuum ultraviolet absorption spectroscopy was developed for the measurement of absolute fluorine (F) atom density in reactive plasmas. In order to minimize the influence of radiation trapping...

Photon pressure-induced association of nanometer-sized polymer chains in solution (1999)

Sasaki, K, Masuhara, H, Itoh, Y

The photon pressure effect induced by a focused infrared laser beam upon two kinds of water-soluble carbazolyl-containing copolymers in aqueous solution is shown to result in the formation of single...

Low temperature defect chemistry of oxide electroceramics. (1999)

Low temperature defect chemistry of oxides. (1999)

Low-temperature defect chemistry of oxides. I. General aspects and numerical calculations. (1999)

Low-temperature defect chemistry of oxides. II. Analytical relations. (1999)

Defect chemistry of oxides in partially frozen-in states: case studies for ZrO2(Y2O3), SrZrO3(Y2O3), and SrTiO3. (1999)

Sasaki, K., Claus, J., Maier, J.

Defect chemistry and transport properties of solid electrolytes including the influence of redox-active impurity ions. (1999)

Sasaki, K., Haseidl, M., Maier, J.

Roles of Quarks in Strong and Weak YN Interactions (1998)

Oka, M., Tani, Y., Inoue, T., Sasaki, K.

The short range parts of the strong and weak hyperon-nucleon interactions are studied with quark substructure of the baryons taken into account. A summary of the quark cluster model calculations of...

Yield Surfaces of SUS 304 After Cyclic Preloading. (1998)

Ishikawa, H., Sasaki, K.

The yield surface has been measured experimentally for the initially isotropic SUS 304, using a 50 microns/m offset strain criterion for yielding; translation, distortion, expansion and rotation of...

Low-Firing-Temperature X7R Dielectric. (1998)

Sasaki, K., Popowich, M. J.

A low firing temperature, high-K X7R ceramic dielectric formulation has been developed based on high-purity fine grained barium titanate doped with niobium oxide and rare earth oxide. The formulation...

Effect of Intergranular Glass Films on the Electrical Conductivity of 3Y-TZP. (1998)

Goedickemeier, M., Michel, B., Orliukas, A., Bohac, P., Sasaki, K.

The electrical conductivity of 3Y-TZP ceramics containing SiO2 and Al2O3 has been investigated by complex impedance spectroscopy between 500 and 1270K. At low temperatures, the total electrical...

SiC and Si3N4-Matrix Composites According to the Hot-Pressing Route. (1998)

Nakano, K., Sasaki, K., Saka, H., Fujikura, M., Ichikawa, H.

1D carbon- or BN-coated Hi-Nicalon fiber reinforced SiC and Si3N4 matrix composites were fabricated by the slurry route followed by hot pressing. The mechanical properties such as flexural strength...

Basic Study on Si-HBT Using Plasma-Deposited Mu c-Si for Heteroemitter. (1998)

Sasaki, K., Fukazawa, T., Furukawa, S.

This paper describes the crystallinity, electric properties and bandgap of Si films deposited on a single-crystalline substrate by plasma CVD, and the application of this film to the heteroemitter of...

Absolute density and reaction kinetics of fluorine atoms in high-density c-C_4F_8 plasmas (1998)

Sasaki, K., Kawai, Y., Suzuki, C., Kadota, K.

Absolute density and reaction kinetics of fluorine (F) atoms in high-density octafluorocyclobutane (c-C_4F_8) plasmas were examined using vacuum ultraviolet absorption spectroscopy. The F atom...

Determination of negative ion density with optical emission spectroscopy in oxygen afterglow plasmas (1998)

Ishikawa, T., Hayashi, D., Sasaki, K., Kadota, K.

A diagnostic scheme for the measurement of the O^- density in afterglow plasmas is proposed and demonstrated. The present method is based on the fact that excited oxygen atoms (O^*) are produced by...

Chemical and optical mechanism of microparticle formation of poly(N-vinylcarbazole) in N,N-dimethylformamide by photon pressure of a focused near-infrared laser beam (1998)

Laser-controlled assembling of repulsive unimolecular micelles in aqueous solution (1998)

We focus our attention to the laser-controlled association process of poly(N-vinylcarbazole) by "pure" photon pressure effect. A few wt % N,N-dimethylformamide solution of the polymer was irradiated...

Sasaki, K, Masuhara, H, Morishima, Y

Laser manipulation techniques were applied to the control of molecular assembling in D2O. An amphiphilic random copolymer, which has hydrophilic and hydrophobic segments in a single chain and forms a...

Kinetics of fluorine atoms in high-density carbon–tetrafluoride plasmas (1997)

Sasaki, K., Kawai, Y., Suzuki, C., Kadota, K.

Reaction processes of fluorine (F) atoms in high-density carbon–tetrafluoride (CF_4) plasmas were investigated using vacuum ultraviolet absorption spectroscopy. A scaling law...

Multiwavelength Monitoring of the BL Lacertae Object PKS 2155-304 in May 1994. III. Probing the Inner Jet through Multiwavelength Correlations (1997)

Urry, C. Megan, Treves, A., Maraschi, L., Marshall, H., Kii, T., Madejski, G., ...

In May 1994 the BL Lac object PKS 2155-304 was observed continuously for ~10 d with IUE and EUVE and for 2 d with ASCA, as well as with ROSAT and with ground- based radio, IR, and optical telescopes....

Vacuum ultraviolet absorption spectroscopy for absolute density measurements of fluorine atoms in fluorocarbon plasmas (1997)

Sasaki, K., Kawai, Y., Kadota, K.

Absolute densities of fluorine (F) atoms at the ground state (2p^5 ^2P°) were measured in helicon-wave excited high-density CF_4 plasmas by vacuum ultraviolet (VUV) absorption spectroscopy. By...

Test results of TRISTAN insertion quadrupole magnet in superfluid Helium (1997)

Sasaki, K, Tsuchiya, K, Ogitsu, T, Ohuchi, N, Doi, Y, Haruyama, T, ...

Numerical study of an optically pumped multimode D_2O laser (1997)

Sasaki, K., Tsukishima, T.

A numerical simulation of an optically pumped, multimode D_2O laser was carried out based on Lamb’s semiclassical laser theory. The numerical code includes the dispersion effect of the laser medium...

Molecular association by the radiation pressure of a focused laser beam: Fluorescence characterization of pyrene-labeled PNIPAM (1997)

Sasaki, K, Masuhara, H, Taniguchi, T, Miyashita, T

Manipulation of liquid crystal textures with a focused near infrared laser beam (1997)

Molecular assembling by the radiation pressure of a focused laser beam: Poly(N-isopropylacrylamide) in aqueous solution (1997)

Optical manipulation of disclinations and defects in liquid crystal films was demonstrated and discussed in terms of mass transfer induced by radiation pressure and of molecular rotation under the...

Sasaki, K, Masuhara, H, Iwai, K

Phase transitions in aqueous solutions of poly(N-isopropylacrylamide) (PNIPAM) with a molecular weight () of 63 000 were achieved by irradiating the solutions (0.2-3.6 wt %) with an IR laser beam...

Laser-controlled association of poly(N-vinylcarbazole) in organic solvents: Radiation pressure effect of a focused near-infrared laser beam (1997)

Redox-active impurity ions in solid electrolytes and their influence on transport properties. (1997)

Microassociation of poly(N-vinylcarbazole) by a focused near-infrared laser beam (cw-YAG, 1064 nm) was first demonstrated in organic solvents. Investigations were made in cyclohexanone and...

Sasaki, K., Murugaraj, P., Haseidl, M., Maier, J.

Testing of TRISTAN insertion quadrupole magnet in superfluid helium (1996)

Tsuchiya, K, Ogitsu, T, Ohuchi, N, Sasaki, K, Doi, Y, Haruyama, T, ...

The Gluon Self-Energy in the Coulomb and Temporal Axial Gauges via the Pinch Technique (1996)

Passera, M., Sasaki, K.

The $S$-matrix pinch technique is used to derive an effective gluon self-energy to one-loop order, when the theory is quantized in the Coulomb gauge (CG) and in the temporal axial gauge (TAG). When...

Diagnostics of positive and negative ions in high-density CF4 plasmas by time-of-flight mass spectrometry (1996)

Sasaki, K., Ura, K., Kadota, K.

IEEE International Conference on Plasma Science, IEEE Conference Record - Abstracts. 3-5 June 1996. p.174

In situ measurements of ion exchange processes in single polymer particles: Laser trapping microspectroscopy and confocal fluorescence microspectroscopy (vol 68, pg 409, 1996) (1996)

Kim, HB, Hayashi, M, Nakatani, K, Kitamura, N, Sasaki, K, Hotta, Junichi; U0049263, ...

Laser induced phase transition in aqueous solutions of hydrophobically modified poly(N-isopropylacrylamide) (1996)

Hotta, JI, Sasaki, K, Masuhara, H

Phase transitions of amphiphilic copolymer solutions can be achieved by irradiating aqueous solutions of this polymer with an IR-laser beam. As a result, a single microparticle up to 15 mu m is...

A single droplet formation from swelled micelles by radiation pressure of a focused infrared laser beam (1996)

Search for signatures of dilepton gauge bosons in HERA and LEPII-LHC (1994)

Sasaki, K, Tokushuku, K, Yamada, S, Yamazaki, Y

More on the Burkhardt-Cottingham sum rule in QCD (1994)

Kodaira, J, Matsuda, S, Uematsu, T, Sasaki, K

Cloning, Expression and Regulation of Angiotensin II Receptors (1994)

Inagami, T., Iwai, N., Sasaki, K., Yamano, Y., Bardhan, S., Chaki, S., ...

Angiotensin II isoform 1 (AT1) receptor cDNAs were cloned by expression cloning from bovine adrenal and rat vascular smooth muscles. Human AT1 receptor was also cloned. Seven transmembrane structures...

Muonium Hyperfine Structure and the Decay $ \mu ^+\to e^+ +\overline \nu _e +\nu _{\mu}$ in Models with Dilepton Gauge Bosons (1993)

Fujii, H., Mimura, Y., Sasaki, K., Sasaki, T.

We examine the muonium ($\mu ^+e^-$)-antimuonium ($\mu ^-e^+$) system in the models which accomodate the dilepton gauge bosons, and study their contributions to the ground state hyperfine splitting...

Primary malignant melanoma of the female urethra: a case report (1993)

Arai, K, Joko, M, Kagebayashi, Y, Tsumatani, K, Kimura, S, Sasaki, K, ...

ANISOTROPIC REFRACTIVE INDICES OF CADMIUM SULFIDE THIN FILM ON A SLAB-TYPE OPTICAL WAVEGUIDE (1983)

Sasaki, K., Shimizu, T., Nonaka, O., Hamano, O., Serizawa, M.

Anisotropic refractive indices of vacuum evaporated cadmium sulfide thin films on slab-type optical waveguides were determined by an incorporated analysis of the TE and the TM waves.

ANISOTROPIC REFRACTIVE INDICES OF CADMIUM SULFIDE THIN FILM ON A SLAB-TYPE OPTICAL WAVEGUIDE (1983)

Sasaki, K., Shimizu, T., Nonaka, O., Hamano, O., Serizawa, M.

Anisotropic refractive indices of vacuum evaporated cadmium sulfide thin films on slab-type optical waveguides were determined by an incorporated analysis of the TE and the TM waves.

ANISOTROPIC REFRACTIVE INDICES OF CADMIUM SULFIDE THIN FILM ON A SLAB-TYPE OPTICAL WAVEGUIDE (1983)

Sasaki, K., Shimizu, T., Nonaka, O., Hamano, O., Serizawa, M.

Anisotropic refractive indices of vacuum evaporated cadmium sulfide thin films on slab-type optical waveguides were determined by an incorporated analysis of the TE and the TM waves.

4s COVALENT BONDING OF FERRIC ION IN MnFe2O4 (1979)

Shinohara, T., Sasaki, K., Watanabe, H.

The Mössbauer spectrum of 57Co diffused into MnFe2O4 showed that the 57Co ion occupied only the B site . The contact charge density of the 4s electrons in the Fe3+ ion surrounded octahedrally by the...

4s COVALENT BONDING OF FERRIC ION IN MnFe2O4 (1979)

Shinohara, T., Sasaki, K., Watanabe, H.

The Mössbauer spectrum of 57Co diffused into MnFe2O4 showed that the 57Co ion occupied only the B site . The contact charge density of the 4s electrons in the Fe3+ ion surrounded octahedrally by the...

4s COVALENT BONDING OF FERRIC ION IN MnFe2O4 (1979)

Shinohara, T., Sasaki, K., Watanabe, H.

The Mössbauer spectrum of 57Co diffused into MnFe2O4 showed that the 57Co ion occupied only the B site . The contact charge density of the 4s electrons in the Fe3+ ion surrounded octahedrally by the...

ORBITAL CONTRIBUTION TO GENERALIZED SUSCEPTIBILITY AND MAGNETIC SCATTERING OF NEUTRONS IN TRANSITION METALS (1971)

Obata, Y., Sasaki, K., Mori, N.

The orbital contribution to the neutron magnetic scattering by itinerant electron system is formulated. Remarks are given on the relationship of this cross section to the generalized orbital...

THEORY OF DYNAMICAL JAHN-TELLER EFFECT ON MAGNETIC SUSCEPTIBILITY AND ITS APPLICATION TO UO2-ThO2 SYSTEM (1971)

Sasaki, K., Obata, Y.

The magnetic susceptibilities of UO2-ThO2 systems measured by Slowinski and Elliott and by Comly are analysed on the simplified models of vibronic system, where non-Kramers paramagnetic ions in...

ORBITAL CONTRIBUTION TO GENERALIZED SUSCEPTIBILITY AND MAGNETIC SCATTERING OF NEUTRONS IN TRANSITION METALS (1971)

Obata, Y., Sasaki, K., Mori, N.

The orbital contribution to the neutron magnetic scattering by itinerant electron system is formulated. Remarks are given on the relationship of this cross section to the generalized orbital...

THEORY OF DYNAMICAL JAHN-TELLER EFFECT ON MAGNETIC SUSCEPTIBILITY AND ITS APPLICATION TO UO2-ThO2 SYSTEM (1971)

Sasaki, K., Obata, Y.

The magnetic susceptibilities of UO2-ThO2 systems measured by Slowinski and Elliott and by Comly are analysed on the simplified models of vibronic system, where non-Kramers paramagnetic ions in...

ORBITAL CONTRIBUTION TO GENERALIZED SUSCEPTIBILITY AND MAGNETIC SCATTERING OF NEUTRONS IN TRANSITION METALS (1971)

Obata, Y., Sasaki, K., Mori, N.

The orbital contribution to the neutron magnetic scattering by itinerant electron system is formulated. Remarks are given on the relationship of this cross section to the generalized orbital...

THEORY OF DYNAMICAL JAHN-TELLER EFFECT ON MAGNETIC SUSCEPTIBILITY AND ITS APPLICATION TO UO2-ThO2 SYSTEM (1971)

Sasaki, K., Obata, Y.

The magnetic susceptibilities of UO2-ThO2 systems measured by Slowinski and Elliott and by Comly are analysed on the simplified models of vibronic system, where non-Kramers paramagnetic ions in...

Absence of fetal liver hematopoiesis in mice deficient in transcriptional coactivator core binding factor beta.

Sasaki, K, Yagi, H, Bronson, R T, Tominaga, K, Matsunashi, T, Deguchi, K, ...

Core binding factor beta (CBF beta) is considered to be a transcriptional coactivator that dimerizes with transcription factors core binding factor alpha 1 (CBFA1), -2, and -3, and enhances DNA...

Phosphorylation at threonine-235 by a ras-dependent mitogen-activated protein kinase cascade is essential for transcription factor NF-IL6.

Nakajima, T, Kinoshita, S, Sasagawa, T, Sasaki, K, Naruto, M, Kishimoto, T, ...

NF-IL6, a member of the basic leucine zipper (bZIP) family transcription factors, is involved in expression of inducible genes involved in immune and inflammatory responses. We observed that...

In vitro antibacterial activity of Sch 34343 and its stability to beta-lactamases and renal dehydropeptidase 1.

Matsuda, K, Sasaki, K, Inoue, K, Kondo, H, Inoue, M, Mitsuhashi, S

The in vitro antibacterial activity of Sch 34343 against 1,328 strains of clinical isolates was compared with those of imipenem and ceftazidime. Sch 34343 had a broad spectrum of antibacterial...

Protein D, a putative immunoglobulin D-binding protein produced by Haemophilus influenzae, is glycerophosphodiester phosphodiesterase.

Munson, R S, Sasaki, K

Protein D of Haemophilus influenzae is 67% identical to the periplasmic glycerophosphodiester phosphodiesterase of Escherichia coli. Extracts prepared from E. coli expressing recombinant protein D...

Crystallization of R-form lipopolysaccharides from Salmonella minnesota and Escherichia coli.

Kato, N, Ohta, M, Kido, N, Ito, H, Naito, S, Hasegawa, T, ...

Salmonella minnesota Re and Ra lipopolysaccharides (LPSs) and Escherichia coli K-12 LPS formed three-dimensional crystals, either hexagonal plates (preferential growth along the a axis) or solid...

Loss of E-cadherin-dependent cell-cell adhesion due to mutation of the beta-catenin gene in a human cancer cell line, HSC-39.

Kawanishi, J, Kato, J, Sasaki, K, Fujii, S, Watanabe, N, Niitsu, Y

Detachment of cell-cell adhesion is indispensable for the first step of invasion and metastasis of cancer. This mechanism is frequently associated with the impairment of either E-cadherin expression...

Regulation of phosphoenolpyruvate carboxykinase gene transcription by insulin and cAMP: reciprocal actions on initiation and elongation.

Sasaki, K, Granner, D K

Nuclei isolated from H4IIE rat hepatoma cells were used in an in vitro run-on assay, with probes directed against various regions of the phosphoenolpyruvate carboxykinase [GTP: oxaloacetate...

Protein D of Haemophilus influenzae is not a universal immunoglobulin D-binding protein.

Sasaki, K, Munson, R S

Haemophilus influenzae type b and nontypeable H. influenzae have been reported to bind human immunoglobulin D (IgD). IgD myeloma sera from five patients were tested for the ability of IgD to bind to...

The structural organization and DNA sequence of a wheat histone H4 gene.

Tabata, T, Sasaki, K, Iwabuchi, M

Some wheat histone H4 genes have been cloned from a Charon 4 wheat genomic DNA library using sea urchin histone H4 DNA as a probe. DNA sequence analysis of a cloned gene showed that the deduced amino...

c-fps/fes protein-tyrosine kinase is implicated in a signaling pathway triggered by granulocyte-macrophage colony-stimulating factor and interleukin-3.

Hanazono, Y, Chiba, S, Sasaki, K, Mano, H, Miyajima, A, Arai, K, ...

Granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-3 (IL-3) are hematopoietic growth factors which stimulate the proliferation and differentiation of myeloid progenitor cells....

Transport of urokinase across the intestinal tract of normal human subjects with stimulation of synthesis and/or release of urokinase-type proteins.

Toki, N, Sumi, H, Sasaki, K, Boreisha, I, Robbins, K C

Oral administration of clinical-type high molecular weight urokinase (HMW-UK) in a single dose of 30,000-60,000 International Units (IU) in enteric-coated capsules, in a group of normal human...

Inhibition of specific binding of okadaic acid to protein phosphatase 2A by microcystin-LR, calyculin-A and tautomycin: method of analysis of interactions of tight-binding ligands with target protein.

Takai, A, Sasaki, K, Nagai, H, Mieskes, G, Isobe, M, Isono, K, ...

Several groups have reported that okadaic acid (OA) and some other tight-binding protein phosphatase inhibitors including microcystin-LR (MCLR), calyculin-A and tautomycin prevent each other from...

Affinity of okadaic acid to type-1 and type-2A protein phosphatases is markedly reduced by oxidation of its 27-hydroxyl group.

Sasaki, K, Murata, M, Yasumoto, T, Mieskes, G, Takai, A

Okadaic acid (OA), a potent inhibitor of type-1 and type-2A protein phosphatases (PP1 and PP2A), has four hydroxyl groups at 2, 7, 24 and 27 positions (see Figure 1). By chemical treatment of OA we...

The effect of bilirubin photoisomers on unbound-bilirubin concentrations estimated by the peroxidase method.

Itoh, S, Yamakawa, T, Onishi, S, Isobe, K, Manabe, M, Sasaki, K

Unbound bilirubin is oxidized to nearly colourless substances in the presence of H2O2 or ethyl hydroperoxide and horseradish peroxidase. To predict the risk of kernicterus (degenerated yellow...

Fabrication of a new substrate for atomic force microscopic observation of DNA molecules from an ultrasmooth sapphire plate.

Yoshida, K, Yoshimoto, M, Sasaki, K, Ohnishi, T, Ushiki, T, Hitomi, J, ...

A new stable substrate applicable to the observation of DNA molecules by atomic force microscopy (AFM) was fabricated from a ultrasmooth sapphire (alpha-Al2O3 single crystal) plate. The atomically...

Dopamine-induced depolarizing responses associated with negative slope conductance in LB-cluster neurones of Aplysia.

Matsumoto, M, Sasaki, K, Sato, M, Shozushima, M, Takashima, K

1. Current- and voltage-clamp methods were used to evaluate the intracellular and ionic mechanisms involved in dopamine-induced slow depolarizations recorded from neurones of the LB cluster in the...

Diurnal- and behaviour-related activity of ventromedial hypothalamic neurones in freely behaving rats.

Feeding- and chemical-related activity of ventromedial hypothalamic neurones in freely behaving rats.

1. Long-term (25-93 h) single-neurone activity of seventy-eight ventromedial hypothalamic (v.m.h.) neurones was analysed in freely behaving rats. 2. The activity of fifty-seven (73%) of the...

The excitatory synaptic action of climbing fibres on the Purkinje cells of the cerebellum

1. The activity of seventy-eight single neurones in the ventromedial hypothalamus (v.m.h.) was recorded in sixty-three freely behaving rats, and the effects of feeding, intraventricular (I.C.V.)...

Interaction experiments on the responses evoked in Purkinje cells by climbing fibres

1. A single climbing fibre makes an extraordinarily extensive synaptic contact with the dendrites of a Purkinje cell. Investigation of this synaptic mechanism in the cerebellum of the cat has been...

Eccles, J. C., Llinás, R., Sasaki, K., Voorhoeve, P. E.

1. The uniquely powerful excitatory synaptic action of a single climbing fibre on a Purkinje cell in the cerebellum of the cat was tested during the intense and prolonged inhibitory action produced...

The action of antidromic impulses on the cerebellar Purkinje cells

The morphology of the haemopoietic cells of the yolk sac in mice with particular reference to nucleolar changes.

1. Antidromic impulses have been set up in the axons of Purkinje cells of the cerebellar vermis by stimulation in the juxta-fastigial (J.F.) region. Most experiments were performed on the normal cat...

Ando, M, Katagiri, K, Yamamoto, S, Wakamatsu, K, Kawahara, I, Asanuma, S, ...

To evaluate the age-related response of essential cell functions against peroxidative damage in hyperthermia, we studied the biochemical response to heat stress in both young and aged rats. Passive...

Sasaki, K, Kendall, M D

Nucleolar changes of haemopoietic cells during the development of the mouse yolk sac blood islands were qualitatively examined by light and electron microscopy. Haemopoiesis in the yolk sac begins at...

Effects of gonadectomy and testosterone on lymphocytes in the bone marrow of the mouse: an electron microscopic study.

Sasaki, K, Ito, T

Effects of gonadectomy and testosterone on lymphocytes in the mouse marrow were studied quantitatively by electron microscopy. Marrow lymphocytes rapidly decreased in frequency after puberty in...

Megakaryocytes in the yolk sac, liver and bone marrow of the mouse: a cytometrical analysis by semithin light microscopy.

Matsumura, G, Sasaki, K

Megakaryocytes of the yolk sac, liver and bone marrow were cytometrically observed by light microscopy using semithin plastic sections. In the yolk sac at 10 and 11 days of gestation, megakaryocytes...

Arterial supply to the lumbar lymph nodes in man.

Sasaki, K

The arteries supplying the lumbar lymph nodes were investigated in 39 cadavers. In the upper region (L2), a branch of the testicular or ovarian artery predominated and supplied the right and left...

Cell death and phagocytosis of haematopoietic elements at the onset of haematopoiesis in the mouse spleen: an ultrastructural study.

Sasaki, K, Iwatsuki, H, Suda, M, Itano, C

The spleen in fetal and early postnatal mice contains a variety of proliferating haematopoietic cells as well as 2 kinds of phagocytes, scavenger macrophages and mast cells, laden with large...

Immunocytochemical localisation of the carbonic anhydrase III in the rat parotid gland.

Asari, M, Igarashi, S, Sasaki, K, Amasaki, T, Nishita, T, Amasaki, H

Immunohistochemical localisation of the carbonic anhydrase III isozyme in rat parotid glands was studied. In parotid glands, CA-III was found to be present in the striated and excretory duct cells...

Haemopoietic cells of yolk sac and liver in the mouse embryo: a light and electron microscopical study.

Spleen lymphocytes and haemopoiesis in the mouse embryo.

Haemopoietic cells in yolk sac and liver of mouse embryo were examined by light and electron microscopy with particular reference to nuclear and nucleolar structure. Mitotic index of yolk sac...

Comparative ultrastructure and cytometric analysis of small lymphocytes in haemopoietic organs of neonatal mice.

Development of splenic haemopoiesis and morphology of lymphocytes in the embryonic and neonatal mice were examined by light and electron microscopy. At 15 days of gestation, free mononuclear cells...

Abe, K, Sasaki, K, Ito, T

Morphological analysis of leucocyte transmigration in the pleural cavity

Teng, R, Johkura, K, Ogiwara, N, Zhao, X, Cui, L, Iida, I, ...

The role that pleural mesothelial cells play in leucocyte transmigration into the pleural cavity was investigated in lipopolysaccharide-stimulated mice. Changes in mesothelial cell morphology and...

Absence of fetal liver hematopoiesis in mice deficient in transcriptional coactivator core binding factor beta.

Sasaki, K, Yagi, H, Bronson, R T, Tominaga, K, Matsunashi, T, Deguchi, K, ...

Core binding factor beta (CBF beta) is considered to be a transcriptional coactivator that dimerizes with transcription factors core binding factor alpha 1 (CBFA1), -2, and -3, and enhances DNA...

Phosphorylation at threonine-235 by a ras-dependent mitogen-activated protein kinase cascade is essential for transcription factor NF-IL6.

Nakajima, T, Kinoshita, S, Sasagawa, T, Sasaki, K, Naruto, M, Kishimoto, T, ...

NF-IL6, a member of the basic leucine zipper (bZIP) family transcription factors, is involved in expression of inducible genes involved in immune and inflammatory responses. We observed that...

In vitro antibacterial activity of Sch 34343 and its stability to beta-lactamases and renal dehydropeptidase 1.

Matsuda, K, Sasaki, K, Inoue, K, Kondo, H, Inoue, M, Mitsuhashi, S

The in vitro antibacterial activity of Sch 34343 against 1,328 strains of clinical isolates was compared with those of imipenem and ceftazidime. Sch 34343 had a broad spectrum of antibacterial...

Protein D, a putative immunoglobulin D-binding protein produced by Haemophilus influenzae, is glycerophosphodiester phosphodiesterase.

Munson, R S, Sasaki, K

Protein D of Haemophilus influenzae is 67% identical to the periplasmic glycerophosphodiester phosphodiesterase of Escherichia coli. Extracts prepared from E. coli expressing recombinant protein D...

Crystallization of R-form lipopolysaccharides from Salmonella minnesota and Escherichia coli.

Kato, N, Ohta, M, Kido, N, Ito, H, Naito, S, Hasegawa, T, ...

Salmonella minnesota Re and Ra lipopolysaccharides (LPSs) and Escherichia coli K-12 LPS formed three-dimensional crystals, either hexagonal plates (preferential growth along the a axis) or solid...

Loss of E-cadherin-dependent cell-cell adhesion due to mutation of the beta-catenin gene in a human cancer cell line, HSC-39.

Kawanishi, J, Kato, J, Sasaki, K, Fujii, S, Watanabe, N, Niitsu, Y

Detachment of cell-cell adhesion is indispensable for the first step of invasion and metastasis of cancer. This mechanism is frequently associated with the impairment of either E-cadherin expression...

Regulation of phosphoenolpyruvate carboxykinase gene transcription by insulin and cAMP: reciprocal actions on initiation and elongation.

Sasaki, K, Granner, D K

Nuclei isolated from H4IIE rat hepatoma cells were used in an in vitro run-on assay, with probes directed against various regions of the phosphoenolpyruvate carboxykinase [GTP: oxaloacetate...

Protein D of Haemophilus influenzae is not a universal immunoglobulin D-binding protein.

Sasaki, K, Munson, R S

Haemophilus influenzae type b and nontypeable H. influenzae have been reported to bind human immunoglobulin D (IgD). IgD myeloma sera from five patients were tested for the ability of IgD to bind to...

The structural organization and DNA sequence of a wheat histone H4 gene.

Tabata, T, Sasaki, K, Iwabuchi, M

Some wheat histone H4 genes have been cloned from a Charon 4 wheat genomic DNA library using sea urchin histone H4 DNA as a probe. DNA sequence analysis of a cloned gene showed that the deduced amino...

c-fps/fes protein-tyrosine kinase is implicated in a signaling pathway triggered by granulocyte-macrophage colony-stimulating factor and interleukin-3.

Hanazono, Y, Chiba, S, Sasaki, K, Mano, H, Miyajima, A, Arai, K, ...

Granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-3 (IL-3) are hematopoietic growth factors which stimulate the proliferation and differentiation of myeloid progenitor cells....

Transport of urokinase across the intestinal tract of normal human subjects with stimulation of synthesis and/or release of urokinase-type proteins.

Toki, N, Sumi, H, Sasaki, K, Boreisha, I, Robbins, K C

Oral administration of clinical-type high molecular weight urokinase (HMW-UK) in a single dose of 30,000-60,000 International Units (IU) in enteric-coated capsules, in a group of normal human...

Inhibition of specific binding of okadaic acid to protein phosphatase 2A by microcystin-LR, calyculin-A and tautomycin: method of analysis of interactions of tight-binding ligands with target protein.

Takai, A, Sasaki, K, Nagai, H, Mieskes, G, Isobe, M, Isono, K, ...

Several groups have reported that okadaic acid (OA) and some other tight-binding protein phosphatase inhibitors including microcystin-LR (MCLR), calyculin-A and tautomycin prevent each other from...

Affinity of okadaic acid to type-1 and type-2A protein phosphatases is markedly reduced by oxidation of its 27-hydroxyl group.

Sasaki, K, Murata, M, Yasumoto, T, Mieskes, G, Takai, A

Okadaic acid (OA), a potent inhibitor of type-1 and type-2A protein phosphatases (PP1 and PP2A), has four hydroxyl groups at 2, 7, 24 and 27 positions (see Figure 1). By chemical treatment of OA we...

The effect of bilirubin photoisomers on unbound-bilirubin concentrations estimated by the peroxidase method.

Itoh, S, Yamakawa, T, Onishi, S, Isobe, K, Manabe, M, Sasaki, K

Unbound bilirubin is oxidized to nearly colourless substances in the presence of H2O2 or ethyl hydroperoxide and horseradish peroxidase. To predict the risk of kernicterus (degenerated yellow...

The morphology of the haemopoietic cells of the yolk sac in mice with particular reference to nucleolar changes.

Sasaki, K, Kendall, M D

Nucleolar changes of haemopoietic cells during the development of the mouse yolk sac blood islands were qualitatively examined by light and electron microscopy. Haemopoiesis in the yolk sac begins at...

Dopamine-induced depolarizing responses associated with negative slope conductance in LB-cluster neurones of Aplysia.

Matsumoto, M, Sasaki, K, Sato, M, Shozushima, M, Takashima, K

1. Current- and voltage-clamp methods were used to evaluate the intracellular and ionic mechanisms involved in dopamine-induced slow depolarizations recorded from neurones of the LB cluster in the...

Diurnal- and behaviour-related activity of ventromedial hypothalamic neurones in freely behaving rats.

Feeding- and chemical-related activity of ventromedial hypothalamic neurones in freely behaving rats.

1. Long-term (25-93 h) single-neurone activity of seventy-eight ventromedial hypothalamic (v.m.h.) neurones was analysed in freely behaving rats. 2. The activity of fifty-seven (73%) of the...

Effects of gonadectomy and testosterone on lymphocytes in the bone marrow of the mouse: an electron microscopic study.

1. The activity of seventy-eight single neurones in the ventromedial hypothalamus (v.m.h.) was recorded in sixty-three freely behaving rats, and the effects of feeding, intraventricular (I.C.V.)...

Sasaki, K, Ito, T

Effects of gonadectomy and testosterone on lymphocytes in the mouse marrow were studied quantitatively by electron microscopy. Marrow lymphocytes rapidly decreased in frequency after puberty in...

Megakaryocytes in the yolk sac, liver and bone marrow of the mouse: a cytometrical analysis by semithin light microscopy.

Matsumura, G, Sasaki, K

Megakaryocytes of the yolk sac, liver and bone marrow were cytometrically observed by light microscopy using semithin plastic sections. In the yolk sac at 10 and 11 days of gestation, megakaryocytes...

Arterial supply to the lumbar lymph nodes in man.

Sasaki, K

The arteries supplying the lumbar lymph nodes were investigated in 39 cadavers. In the upper region (L2), a branch of the testicular or ovarian artery predominated and supplied the right and left...

Cell death and phagocytosis of haematopoietic elements at the onset of haematopoiesis in the mouse spleen: an ultrastructural study.

Sasaki, K, Iwatsuki, H, Suda, M, Itano, C

The spleen in fetal and early postnatal mice contains a variety of proliferating haematopoietic cells as well as 2 kinds of phagocytes, scavenger macrophages and mast cells, laden with large...

Immunocytochemical localisation of the carbonic anhydrase III in the rat parotid gland.

Asari, M, Igarashi, S, Sasaki, K, Amasaki, T, Nishita, T, Amasaki, H

Immunohistochemical localisation of the carbonic anhydrase III isozyme in rat parotid glands was studied. In parotid glands, CA-III was found to be present in the striated and excretory duct cells...

Haemopoietic cells of yolk sac and liver in the mouse embryo: a light and electron microscopical study.

Spleen lymphocytes and haemopoiesis in the mouse embryo.

Haemopoietic cells in yolk sac and liver of mouse embryo were examined by light and electron microscopy with particular reference to nuclear and nucleolar structure. Mitotic index of yolk sac...

Comparative ultrastructure and cytometric analysis of small lymphocytes in haemopoietic organs of neonatal mice.

Development of splenic haemopoiesis and morphology of lymphocytes in the embryonic and neonatal mice were examined by light and electron microscopy. At 15 days of gestation, free mononuclear cells...

Abe, K, Sasaki, K, Ito, T

Fabrication of a new substrate for atomic force microscopic observation of DNA molecules from an ultrasmooth sapphire plate.

Yoshida, K, Yoshimoto, M, Sasaki, K, Ohnishi, T, Ushiki, T, Hitomi, J, ...

A new stable substrate applicable to the observation of DNA molecules by atomic force microscopy (AFM) was fabricated from a ultrasmooth sapphire (alpha-Al2O3 single crystal) plate. The atomically...

The excitatory synaptic action of climbing fibres on the Purkinje cells of the cerebellum

Interaction experiments on the responses evoked in Purkinje cells by climbing fibres

1. A single climbing fibre makes an extraordinarily extensive synaptic contact with the dendrites of a Purkinje cell. Investigation of this synaptic mechanism in the cerebellum of the cat has been...

Eccles, J. C., Llinás, R., Sasaki, K., Voorhoeve, P. E.

1. The uniquely powerful excitatory synaptic action of a single climbing fibre on a Purkinje cell in the cerebellum of the cat was tested during the intense and prolonged inhibitory action produced...

The action of antidromic impulses on the cerebellar Purkinje cells