Find Research Outputs

1989
2 Citations (Scopus)

Facilitated transport of nitrogen and acetylene in poly(vinylcyclopentadienylmanganese) membrane

Nishide, H., Kawakami, H. & Tsuchida, E., 1989, Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering. Publ by ACS, Vol. 61. p. 492-496 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Acetylene
Nitrogen
Membranes
Equilibrium constants
Photolysis
24 Citations (Scopus)

Fast recovery of excitonic absorption peaks in tunneling bi-quantum-well structures

Tackeuchi, A., Muto, S., Inata, T. & Fujii, T., 1989 Jul, In : Japanese Journal of Applied Physics, Part 2: Letters. 28, 7

Research output: Contribution to journalArticle

Semiconductor quantum wells
recovery
quantum wells
Recovery
Electron tunneling
2 Citations (Scopus)

Fatigue fracture mechanisms for SiC whiskers and SiC particulates reinforced aluminum composites

Masuda, C. & Tanaka, Y., 1989 Sep, In : Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 75, 9, p. 1753-1760 8 p.

Research output: Contribution to journalArticle

Aluminum
particulates
Fatigue of materials
aluminum
composite materials
22 Citations (Scopus)

Field-emission properties of surface-processed TiC tips

Ishizawa, Y., Aoki, S., Oshima, C. & Otani, S., 1989, In : Journal of Physics D: Applied Physics. 22, 11, p. 1763-1767 5 p.

Research output: Contribution to journalArticle

Field emission
field emission
sulfides
Hydrogen Sulfide
hydrogen sulfide
1 Citation (Scopus)
Vortex shedding
Flow visualization
Vorticity
Navier Stokes equations
Experiments
14 Citations (Scopus)
Euler equations
Vorticity
vorticity
formulations
28 Citations (Scopus)

First measurements of hadronic decays of the Z boson

Abrams, G. S., Adolphsen, C. E., Aleksan, R., Alexander, J. P., Averill, D., Ballam, J., Barish, B. C., Barklow, T., Barnett, B. A., Bartelt, J., Bethke, S., Blockus, D., De Boer, W., Bonvicini, G., Boyarski, A., Brabson, B., Breakstone, A., Brom, J. M., Bulos, F., Burchat, P. R. & 128 others, Burke, D. L., Cence, R. J., Chapman, J., Chmeissani, M., Cords, D., Coupal, D. P., Dauncey, P., Destaebler, H. C., Dorfan, D. E., Dorfan, J. M., Drell, P. S., Drewer, D. C., Elia, R., Fay, J., Feldman, G. J., Fernandes, D., Field, R. C., Ford, W. T., Fordham, C., Frey, R., Fujino, D., Gan, K. K., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez Cadenas, J. J., Gratta, G., Grindhammer, G., Grosse-Wiesmann, P., Hanson, G., Harr, R., Harral, B., Harris, F. A., Hawkes, C. M., Hayes, K., Hearty, C., Herrup, D., Heusch, C. A., Hildreth, M. D., Himel, T., Hinshaw, D. A., Holmgren, S. O., Hong, S. J., Hutchinson, D., Hylen, J., Innes, W. R., Jacobsen, R. G., Jaffre, M., Jaros, J. A., Jung, C. K., Kadyk, J. A., Karlen, D., Kent, J., King, M., Klein, S. R., Koetke, D. S., Komamiya, S., Koska, W., Kowalski, L. A., Kozanecki, W., Kral, J. F., Kuhlen, M., Labarga, L., Lankford, A. J., Larsen, R. R., Le Diberder, F., Levi, M. E., Litke, A. M., L̈th, V., Lynch, G. R., McKenna, J. A., Matthews, J. A. J., Mattison, T., Milliken, B. D., Moffeit, K. C., Munger, C. T., Murray, W. N., Nash, J., Nitz, D., Ogren, H., Ong, R. A., Oshaughnessy, K. F., Parker, S. I., Peck, C., Perl, M. L., Perrier, F., Petersen, A., Petradza, M., Pitthan, R., Porter, F. C., Rankin, P., Richman, J. D., Riles, K., Rouse, F. R., Rust, D. R., Sadrozinski, H. F. W., Schaad, M. W., Schalk, T. L., Schumm, B. A., Schwarz, A. S., Seiden, A., Smith, J. G., Snyder, A., Soderstrom, E., Stoker, D. P., Stroynowski, R., Swartz, M., Thun, R., Trilling, G. H., Van Kooten, R., Voruganti, P., Wagner, S. R., Watson, S., Weber, P., Weigend, A., Weinstein, A. J., Weir, A. J., Wicklund, E., Wolf, R. C., Wood, D. R., Woods, M., Wormser, G., Wright, R., Wu, D. Y., Yurko, M., Zaccardelli, C. & Von Zanthier, C., 1989 Jan 1, In : Physical Review Letters. 63, 15, p. 1558-1561 4 p.

Research output: Contribution to journalArticle

bosons
decay
partons
quantum chromodynamics
predictions
35 Citations (Scopus)

Flow-rate modulation epitaxy of GaAs and AlGaAs

Kobayashi, N., Makimoto, T., Yamauchi, Y. & Horikoshi, Y., 1989, In : Journal of Applied Physics. 66, 2, p. 640-651 12 p.

Research output: Contribution to journalArticle

epitaxy
aluminum gallium arsenides
flow velocity
modulation
dopes
15 Citations (Scopus)

Formation kinetics of peroxovanadium(V) complexes in strongly acidic media as studied by a high-pressure stopped-flow technique

Funahashi, S., Ishihara, K., Inamo, M. & Tanaka, M., 1989 Mar 1, In : Inorganica Chimica Acta. 157, 1, p. 65-71 7 p.

Research output: Contribution to journalArticle

Tantalum
Vanadium
Hydrogen peroxide
Hydrogen Peroxide
Chemical activation
49 Citations (Scopus)

Formation of hydrotalcite-acrylate intercalation compounds and their heat-treated products

Tanaka, M., Park, I. Y., Kuroda, K. & Kato, C., 1989, In : Bulletin of the Chemical Society of Japan. 62, 11, p. 3442-3445 4 p.

Research output: Contribution to journalArticle

hydrotalcite
Intercalation compounds
acrylic acid
Hot Temperature
3 Citations (Scopus)

Fuel shape effect on the determinitic properties of turbulent diffusion flames

Hasemi, Y. & Nishihata, M., 1989, In : Bulletin of Japan Association for Fire Science and Engineering. 38, 2, p. 29-34 6 p.

Research output: Contribution to journalArticle

Propane
Enclosures
Fuel burners
Temperature distribution
Temperature
3 Citations (Scopus)

Fundamental Study on Measurement of ELF Electric Field at Biological Body Surfaces

Shimizu, K., Endo, H. & Matsumoto, G., 1989, In : IEEE Transactions on Instrumentation and Measurement. 38, 3, p. 779-784 6 p.

Research output: Contribution to journalArticle

extremely low frequencies
Electric fields
electric fields
biological effects
sensors

Fundamental study on zinc sulfation roasting reaction

Subagja, R., Kobayasi, A., Takenaka, H. & Fuwa, A., 1989 Jul, In : Shigen to sozai. 105, 8, p. 639-644 6 p.

Research output: Contribution to journalArticle

Zinc
Thermodynamics
Zinc sulfide
Phase stability
Conservation
20 Citations (Scopus)

Gamma-irradiation effect on high-Tc superconductor YBa2Cu3O7-x

Kutsukake, T., Somei, H., Ohki, Y., Nagasawa, K. & Kaneko, F., 1989 Aug, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 28, 8, p. 1393-1394 2 p.

Research output: Contribution to journalArticle

Superconducting materials
Irradiation
irradiation
Diffraction patterns
Volume fraction
1 Citation (Scopus)

Gas transfer performance of woven tubes oxygenation for an intravenacaval blood gas exchange

Hoshino, K. & Tanishita, K., 1989, In : Japanese Journal of Artificial Organs. 18, 2, p. 1030-1033 4 p.

Research output: Contribution to journalArticle

Gases
34 Citations (Scopus)

Gelfand-Zetlin basis for Uq(gl(N+1)) modules

Ueno, K., Takebayashi, T. & Shibukawa, Y., 1989 Oct, In : Letters in Mathematical Physics. 18, 3, p. 215-221 7 p.

Research output: Contribution to journalArticle

modules
operators
Module
Operator
46 Citations (Scopus)

Generalized analysis method of auto-parametric resonances in power systems

Yorino, N., Sasaki, H., Tamura, Y. & Yokoyama, R., 1989 Aug, In : IEEE Transactions on Power Systems. 4, 3, p. 1057-1064 8 p.

Research output: Contribution to journalArticle

Nonlinear systems
Damping
Computer simulation
45 Citations (Scopus)
Half-space
Navier-Stokes Equations
Decay
18 Citations (Scopus)

Grouped element-by-element iteration schemes for incompressible flow computations

Tezduyar, T. E. & Liou, J., 1989, In : Computer Physics Communications. 53, 1-3, p. 441-453 13 p.

Research output: Contribution to journalArticle

incompressible flow
Incompressible flow
Unsteady flow
Vorticity
iteration
31 Citations (Scopus)

Hierarchical state estimation using a fast rectangular-coordinate method

Iwamoto, S., Kusano, M. & Quintana, V. H., 1989 Aug, In : IEEE Transactions on Power Systems. 4, 3, p. 870-880 11 p.

Research output: Contribution to journalArticle

State estimation
Jacobian matrices
Electric potential
Cost functions
Decomposition

Hierarchical State Estimation Using a Fast Rectangular-Coordinate Method

Iwamoto, S. & Kusano, M., 1989, In : IEEE Power Engineering Review. 9, 8, p. 33-34 2 p.

Research output: Contribution to journalArticle

State estimation
1 Citation (Scopus)
three dimensional flow
engines
Vortex flow
Intake valves
Engines
1 Citation (Scopus)
aluminum gallium arsenides
Semiconductor lasers
Refractive index
semiconductor lasers
Reflective coatings

High-speed parallel FFT-processor for a radio astronomy telescope

Iwase, S., Okita, T., Yamazaki, T., Daishido, T. & Asuma, K., 1989 May, In : Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 72, 5, p. 109-117 9 p.

Research output: Contribution to journalArticle

Radio astronomy
Antenna phased arrays
Telescopes
Fast Fourier transforms
Video signal processing
12 Citations (Scopus)

High temperature heat content measurements of the III-V (III: Al, Ga, In V: N, P, As, Sb) compounds

Yamaguchi, K., Itagaki, K. & Yazawa, A., 1989 Aug, In : Nippon Kinzoku Gakkai-si. 53, 8, p. 764-770 7 p.

Research output: Contribution to journalArticle

heat of fusion
fusion (melting)
Enthalpy
drop calorimeters
Fusion reactions
18 Citations (Scopus)

Homologous radioimmunoassay for plasma and pituitary prolactin in the toad, Bufo japonicus

Yamamoto, K., Kikuyama, S. & Ishii, S., 1989, In : General and Comparative Endocrinology. 74, 3, p. 373-376 4 p.

Research output: Contribution to journalArticle

Bufonidae
Bufo
toads
prolactin
radioimmunoassays
2 Citations (Scopus)

Hormonal status of menstrual cycles in female athletes

Hoshi, A., Kita, N., Arao, T., Aoki, K., Goto, Y., Sugawara, I., Yamada, Y., Matsuda, K. & Tsutsumi, T., 1989, In : Bulletin of the Physical Fitness Research Institute. 71, p. 25-34 10 p.

Research output: Contribution to journalArticle

Menstrual Cycle
Athletes
6 Citations (Scopus)

Hydrodynamic characteristics of newly-developed prosthetic heart valves by the use of several types of in-vitro test systems

Umezu, M., Nugent, A., Ye, C. X. & Chang, V. P., 1989, In : Japanese Journal of Artificial Organs. 18, 2, p. 719-722 4 p.

Research output: Contribution to journalArticle

Heart Valves
Hydrodynamics
In Vitro Techniques

Hydrogen-induced absorption bands in silica core fibers in the infrared region

Yokomachi, Y., Tohmon, R., Ohki, Y., Hama, Y. & Nagasawa, K., 1989, Opt Fiber Commun Conf Summ Pap. Piscataway, NJ, United States: Publ by IEEE, p. 113 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Absorption spectra
Silica
Infrared radiation
Hydrogen
Fibers

Identification of an interleukin-6-response element in the rat α2-macroglobulin gene

Hattori, M., Abraham, L. J. & Fey, G. H., 1989, In : Annals of the New York Academy of Sciences. 557, p. 499-501 3 p.

Research output: Contribution to journalArticle

Macroglobulins
Response Elements
Rats
Interleukin-6
Genes
15 Citations (Scopus)

Identification of the Magnetic Poles on Strong Magnetic Grains from Meteorites using Magnetotactic Bacteria

Funaki, M., Sakai, H. & Matsunaga, T., 1989, In : Journal of Geomagnetism and Geoelectricity. 41, 1, p. 77-87 11 p.

Research output: Contribution to journalArticle

magnetic poles
meteorites
meteorite
bacteria
bacterium
3 Citations (Scopus)

II-VI/III-V heterointerfaces: Epilayer-on-epilayer structures

Qian, Q. D., Qiu, J., Glenn, J. L., O, S., Gunshor, R. L., Kolodziejski, L. A., Kobayashi, M., Otsuka, N., Melloch, M. R., Cooper, J. A., Haggerott, M., Heyen, T. & Nurmikko, A. V., 1989 Feb 2, In : Journal of Crystal Growth. 95, 1-4, p. 567-571 5 p.

Research output: Contribution to journalArticle

Epilayers
phytotrons
Epitaxial growth
Heterojunctions
depletion

II-VI/III-V heterostructures: Epilayer-on-epilayer structures

Gunshor, R. L., Kolodziejski, L. A., Kobayashi, M., Otsuka, N. & Nurmikko, A. V., 1989 Mar 15, In : Proceedings of SPIE - The International Society for Optical Engineering. 1037, p. 78-85 8 p.

Research output: Contribution to journalArticle

phytotrons
Heterostructures
Epilayers
Gallium Arsenide
Heterojunctions
3 Citations (Scopus)

Impacts of robotization on the Japanese economy

Saito, M. & Nakamura, S., 1989, In : Technological Forecasting and Social Change. 35, 2-3, p. 167-177 11 p.

Research output: Contribution to journalArticle

Econometric Models
Personnel
Robots
Japanese economy
Surveys and Questionnaires
13 Citations (Scopus)

Independent flexible motion of submolecular domains of the Ca2+,Mg2+-ATPase of sarcoplasmic reticulum measured by time-resolved fluorescence depolarization of site-specifically attached probes

Suzuki, S. I., Kawato, S., Kouyama, T., Kinosita, K., Ikegami, A. & Kawakita, M., 1989, In : Biochemistry. 28, 19, p. 7734-7740 7 p.

Research output: Contribution to journalArticle

Ca(2+) Mg(2+)-ATPase
Depolarization
Sarcoplasmic Reticulum
Fluorescence
Adenosine Triphosphatases
38 Citations (Scopus)

Inflation in a renormalizable cosmological model and the cosmic no-hair conjecture

Maeda, K., Stein-Schabes, J. A. & Futamase, T., 1989, In : Physical Review D. 39, 10, p. 2848-2853 6 p.

Research output: Contribution to journalArticle

hair
conformal mapping
gravitation
scalars
8 Citations (Scopus)

Influences of ventricular assist device pumping on blood coagulation

Taenaka, Y., Matsuda, T., Takano, H., Umezu, M. & Akutsu, T., 1989 Jul, In : ASAIO Transactions. 35, 3, p. 396-398 3 p.

Research output: Contribution to journalArticle

Heart-Assist Devices
Blood Coagulation
Platelets
Coagulation
Prekallikrein
2 Citations (Scopus)

Infrared Studies on the Less Stable Conformer of Isoprene in Argon Matrices

Ishibashi, T. A., Furukawa, Y. & Tasumi, M., 1989, In : Nippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal. 1989, 8, p. 1418-1422 5 p.

Research output: Contribution to journalArticle

Isoprene
Argon
Infrared radiation
Electric lamps
Nozzles
19 Citations (Scopus)

Inhibition by beta-carotene - rich algae Dunaliella of spontaneous mammary tumourigenesis in mice

Nagasawa, H., Konishi, R., Sensui, N., Yamamoto, K. & Ben-Amotz, A., 1989, In : Anticancer Research. 9, 1, p. 71-76 6 p.

Research output: Contribution to journalArticle

beta Carotene
Breast
Endocrine System
Organ Size
Human Mammary Glands
5 Citations (Scopus)

Initial atomic structure of CaF2/Si(111) interface formation

Miura, K., Souda, R., Aizawa, T., Oshima, C. & Ishizawa, Y., 1989, In : Solid State Communications. 72, 6, p. 605-608 4 p.

Research output: Contribution to journalArticle

atomic structure
Electron energy loss spectroscopy
Adsorption
adsorption
energy dissipation
125 Citations (Scopus)

Initial measurements of Z-boson resonance parameters in e+e- annihilation

Abrams, G. S., Adolphsen, C. E., Aleksan, R., Alexander, J. P., Allen, M. A., Atwood, W. B., Averill, D., Ballam, J., Bambade, P., Barish, B. C., Barklow, T., Barnett, B. A., Bartelt, J., Bethke, S., Blockus, D., De Boer, W., Bonvicini, G., Boyarski, A., Brabson, B., Breakstone, A. & 155 others, Breidenbach, M., Brom, J. M., Brown, J. L., Brown, K. L., Bulos, F., Burchat, P. R., Burke, D. L., Cence, R. J., Chapman, J., Chmeissani, M., Clendenin, J., Cords, D., Coupal, D. P., Dauncey, P., Dean, N. R., DeStaebler, H. C., Dorfan, D. E., Dorfan, J. M., Drell, P. S., Drewer, D. C., Dydak, F., Ecklund, S., Elia, R., Erickson, R. A., Fay, J., Feldman, G. J., Fernandes, D., Field, R. C., Fieguth, T. H., Fischer, G. E., Ford, W. T., Fordham, C., Frey, R., Fujino, D., Gan, K. K., Gatto, C., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez Cadenas, J. J., Gratta, G., Grindhammer, G., Grosse-Wiesmann, P., Hanson, G., Harr, R., Harral, B., Harris, F. A., Hawkes, C. M., Hayes, K., Hearty, C., Herrup, D., Heusch, C. A., Hildreth, M. D., Himel, T., Hinshaw, D. A., Holmgren, S. O., Hong, S. J., Hutchinson, D., Hutton, A., Hylen, J., Innes, W. R., Jacobsen, R. G., Jaffre, M., Jaros, J. A., Jobe, R. K., Jung, C. K., Kadyk, J. A., Karlen, D., Kent, J., King, M., Klein, S. R., Koetke, D. S., Komamiya, S., Koska, W., Kowalski, L. A., Kozanecki, W., Kral, J. F., Kuhlen, M., Kulikov, A. V., Labarga, L., Lankford, A. J., Larsen, R. R., Le Diberder, F., Levi, M. E., Litke, A. M., Lohse, T., Lth, V., Lynch, G. R., McKenna, J. A., Matthews, J. A. J., Mattison, T., Milliken, B. D., Moffeit, K. C., Munger, C. T., Murray, J. J., Murray, W. N., Nash, J., Ogren, H., Ong, R. A., OShaughnessy, K. F., Parker, S. I., Peck, C., Perl, M. L., Perrier, F., Petersen, A., Petradza, M., Phinney, N., Pitthan, R., Porter, F. C., Rankin, P., Rees, J. R., Richman, J. D., Riles, K., Rivkin, L., Ross, M. C., Rouse, F. R., Rust, D. R., Sadrozinski, H. F. W., Schaad, M. W., Schalk, T. L., Schumm, B. A., Schwarz, A. S., Seeman, J. T., Seiden, A., Sheppard, J. C., Smith, J. G., Snyder, A., Soderstrom, E., Stiening, R., Stoker, D. P., Stroynowski, R., Swartz, M., Thun, R., Toge, N., Trilling, G. H., Van Kooten, R., Voruganti, P., Wagner, S. R., Watson, S., Weber, P., Weigend, A., Weinstein, A. J., Weir, A. J., White, S. L., Wicklund, E., Wolf, R. C., Wood, D. R., Woods, M., Wormser, G., Wright, R., Wu, D. Y., Yurko, M., Zaccardelli, C. & Von Zanthier, C., 1989 Jan 1, In : Physical Review Letters. 63, 7, p. 724-727 4 p.

Research output: Contribution to journalArticle

bosons
neutrinos
decay
63 Citations (Scopus)

In situ scanning tunneling microscopy studies of the underpotential deposition of lead on Au(111)

Green, M. P., Hanson, K. J., Scherson, D. A., Xing, X., Richter, M., Ross, P. N., Carr, R. & Lindau, I., 1989 Dec 1, In : Journal of physical chemistry. 93, 6, p. 2181-2184 4 p.

Research output: Contribution to journalArticle

Scanning tunneling microscopy
scanning tunneling microscopy
Lead
Microscopes
microscopes
4 Citations (Scopus)
Proteins
X Ray Crystallography
Information Systems
X-Rays
Peptides
215 Citations (Scopus)

Integrated semigroups

Kellerman, H. & Hieber, M. G., 1989, In : Journal of Functional Analysis. 84, 1, p. 160-180 21 p.

Research output: Contribution to journalArticle

Integrated Semigroups
Well-posedness
Linear Operator
Differential operator
Cauchy Problem
40 Citations (Scopus)

Intelligent facial image coding driven by speech and phoneme

Morishima, S., Aizawa, K. & Harashima, H., 1989, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Anon (ed.). Publ by IEEE, Vol. 3. p. 1795-1798 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

phonemes
Image coding
coding
synthesis
animation
2 Citations (Scopus)

Interacting hole-spin model for oxide superconductors: NMR relaxation rate

Kurihara, S., 1989, In : Physica C: Superconductivity and its Applications. 162-164, PART 2, p. 1505-1506 2 p.

Research output: Contribution to journalArticle

Oxide superconductors
Nuclear magnetic resonance
nuclear magnetic resonance
oxides
Temperature
25 Citations (Scopus)

Interacting hole-spin model for oxide superconductors

Kurihara, S., 1989, In : Physical Review B. 39, 10, p. 6600-6606 7 p.

Research output: Contribution to journalArticle

Oxide superconductors
Nuclear magnetic resonance
Isotopes
isotope effect
nuclear magnetic resonance

Interactions between regulating equipments in voltage instability environment

Tamura, Y., Ogata, T., Motoyoshi, T., Tayama, Y. & Nakanishi, Y., 1989, Proceedings of the IEEE Conference on Decision and Control. Anon (ed.). Publ by IEEE, Vol. 1. p. 326-331 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Control equipment
Time delay
Electric potential
30 Citations (Scopus)

Interactions of guanine derivatives with ethylenediamine and diethylenetriamine complexes of palladium(II) in solution: Pd binding sites of the guanine ring and formation of a cyclic adduct, [{Pd(en)(guanine ring)}4]

Uchida, K., Toyama, A., Tamura, Y., Sugimura, M., Mitsumori, F., Furukawa, Y., Takeuchi, H. & Harada, I., 1989, In : Inorganic Chemistry. 28, 11, p. 2067-2073 7 p.

Research output: Contribution to journalArticle

ethylenediamine
guanines
Guanine
Palladium
adducts
13 Citations (Scopus)

Interfacial structures and selective growth of diamond particles formed by plasma-assisted CVD

MA, J. S., Kawarada, H., Yonehara, T., Suzuki, J. I., Wei, J., Yokota, Y., Mori, H., Fujita, H. & Hiraki, A., 1989 Nov 2, In : Applied Surface Science. 41-42, C, p. 572-579 8 p.

Research output: Contribution to journalArticle

Diamond
Chemical vapor deposition
Diamonds
diamonds
vapor deposition