A.M.Wicaksono, D.Kawashima, M.Takei

Admittance relaxation time distributions (aRTD) for quantification of protein concentration
IEEE Sensors Journal (accepted)

D.Kawashima, S.Li, Hiromichi Obara, M.Takei

Spatiotemporal imaging of extra/intra-cellular ion concentrations by multi-frequency
complex electrical impedance tomography (mfc-EIT)
IEEE Transactions on Instrumentation and Measurement (Early Access)
[10.1109/TIM.2024.3502740]

S.Segawa, P.A.Sejati, Y.A.K.Prayitno, N.Saito, M.Takei

Spatiotemporal distribution visualization of solid volume fraction during LiCl-KCl molten salt solidification by thermal-compensated electrical resistance tomography (tcERT)
Advanced Powder Technology (available online)
[doi.org/10.1016/j.apt.2024.104723]

G.Setyawan, K.A.Ibrahim, R.Ogawa, P.A.Sejati, H.Fujimoto, H.Yamamoto, M.Takei

Detection of invasive ductal carcinoma by electrical impedance spectroscopy implementing Gaussian relaxation-time distribution (EIS-GRTD)
Biomedical Physics & Engineering Express, IOP Publishing Ltd. 10(6)065022(2024)
[doi.org/10.1088/2057-1976/ad795f]

I.N.Rifai, P.A.Sejati, S.Akita, M.Takei

FPGA-based planar sensor electrical impedance tomography (FPGA-psEIT) system characterized by double feedback howland
constant-current pump and programmable front-end measurement
Transactions on Instrumentation & Measurement, IEEE, 73(2005310)(2024)
[doi.org/10.1109/TIM.2024.3441023]

G.Setyawan, P.A.Sejati, K.A.Ibrahim, M.Takei

Breast cancer recognition by electrical impedance tomography implemented with Gaussian relaxation-time distribution (EIT–GRTD)
Journal of Electrical Bioimpedance, 15(1)99-106(2024)
[doi.org/10.2478/joeb-2024-0011]

B.Sun, P.A.Sejati, T.Shirai, M.Takei

Long-term phase angle muscle imaging under electrical muscle stimulation (EMS) by phase angle electrical impedance tomography
Physiological Measurement, IOP Publishing Ltd., 45(7)075010(2024)
[doi.org/10.1088/1361-6579/ad6749]

金本泰地、川嶋大介、Prima Asmara Sejati、武居昌宏

電気等価回路インピーダンストモグラフィ（EEC-EIT）による正極スラリー混合中のスラリー内部構造のインライン可視化
In-line visualization of particle dispersion configuration in cathode slurry mixing by electrical equivalent circuit-electrical impedance
tomography (EEC-EIT)
粉体工学会誌、61(7)413-426(2024)
[doi.org/10.4164/sptj.61.413]

G.Setyawan, P.A.Sejati, R.Ogawa, K.A.Ibrahim, H.Fujimoto, H.Yamamoto, M.Takei

Detection of invasive ductal carcinoma in quadrant breast areas by electrical impedance tomography implemented with gaussian relaxation-time distribution (EIT-GRTD)
Biomedical Physics & Engineering Express, IOP Publishing Ltd. 10(5)055007(2024)
[doi.org/10.1088/2057-1976/ad5db1]

S.Segawa, P.A.Sejati, Y.A.K.Prayitno, M.Takei

Evaluation of injection current frequency on molten NaCl solidification images reconstructed by high-temperature electrical resistance tomography
Measurement Science and Technology, IOP Publishing, 35,095408(2024)
[doi.org/10.1088/1361-6501/ad50f9]

M.F.Ihsan, D.Kawashima, S.Li, S.Ogasawara, T.Murata, M.Takei

Non-invasive hERG channel screening based on electrical impedance tomography and extracellular voltage activation (EIT–EVA)
Lab on a Chip, Royal Society of Chemistry, 24,3183-3190(2024)
[doi.org/10.1039/D4LC00230J]

小川良磨、P.A.Sejati、秋田新介、武居昌宏

電気インピーダンス・トモグラフィ(EIT)法によるリンパ浮腫評価方法~非侵襲・簡便な新規診断法に向けて~
Investigation of lymphedema assessment by Electrical Impedance Tomography (EIT) as a new non-invasive and simple diagnostic method
リンパ学会誌、日本リンパ学会機関誌、47-1, 30 (2024)

D.Saito, Y.A.K.Prayitno, P.A.Sejati, S.Miwa, M.Takei

Spatio-temporal void fraction visualization in air-water two-phase flow regime transitions by combination of convolutional neural network and long short-term memory implemented into multiple current-voltage (MCV-CNN_LSTM)
Flow Measurement and Instrumentation, Elsevier, 97,102593(2024)
[doi.org/10.1016/j.flowmeasinst.2024.102593]

R.Hane, S.Akita, Y.Kubo, M.Takei, N.Mitsukawa

Great toe tip reconstruction caused by severe COVID-19 using hemi-pulp V-Y advancement flap: A case report
Plastic and Reconstructive Surgery -Global Open (PRS Global Open), 12(3)e5661(2024)
[doi.org/10.1097/GOX.0000000000005661]

P.N.Darma, B.Sun, P.A.Sejati, M.Takei

Local muscle quality imaging in human calf by phase angle electrical impedance tomography (ΦEIT)
IEEE Transactions on Instrumentation & Measurement, IEEE, 73,1-11(2024)
[doi.org/10.1109/TIM.2024.3369128]

K.A.Ibrahim, M.R.Baidillah, R.Wicaksono, S.Akita, M.Takei

Sodium-ion concentration extraction in dermis layer by time-constant-domain electrical impedance spectroscopy (TCD-EIS) with dermis separation model (DSM)
IEEE Transactions on Instrumentation & Measurement, IEEE, 73,4004113(2024)
[doi:org/10.1109/TIM.2024.3366287]

M.W.Waithera, M.W.Sifuna, S.K.Kimani, M.Takei

Drug selection pressure and Fitness cost for artemether-resistant Plasmodium berghei ANKA parasites in vivo
International Journal of Antimicrobial Agents, ELSEVIER, 62(6)107012(2023)
[doi.org/10.1016/j.ijantimicag.2023.107012]

K.A.Ibrahim, P.A.Sejati, P.N.Darma, A.Nakane, M.Takei

Metal particle detection by integration of generative adversarial network and electrical impedance tomography (GAN-EIT) for a wet-type gravity vibration separator
Sensors, 23(19),8062(2023)
[doi:org/10.3390/s23198062] the Special Issue Feature Papers in Physical Sensors 2023

Z.Gao, P.N.Darma, B.Sun, D.Kawashima, M.Takei

A noise-controlling method by hybrid current-stimulation and voltage-measurement for electrical impedance tomography (HCSVM-EIT)
Biomedical Physics & Engineering Express, IOP, 9(6)065002(2023)
[doi:org/10.1088/2057-1976/acf61a]

Zhilong Wang, Zehua Wang, Xiaodong Liu, Xiayi Liu, Tong Zhao, Masahiro Takei

Clarification of the dispersion mechanism of three typical chemical dispersants in lithium-ion battery (LIB) slurry
Particuology, ELSEVIER, 80,90-102(2023)
[doi.org/10.1016/j.partic.2022.11.013]

K.A.Ibrahim, M.R.Baidillah, R.Wicaksono, M.Takei

Skin layer classification by feedforward neural network in bioelectrical impedance spectroscopy
Journal of Electrical Bioimpedance, Sciendo,14(1)19-31(2023)
[doi.org/10.2478/joeb-2023-0004]

K.A.Ibrahim, R.Wicaksono, M.R.Baidillah, K.Ito, M.Takei

Free and bound sodium identification by skin dielectric properties separation algorithm of bioelectrical impedance spectroscopy (spa-BIS) in human skin model
Biomedical Physics & Engineering Express, IOP, 9(5)055010(2023)
[doi:org/10.1088/2057-1976/ace7d8]

B.Sun, P.N.Darma, P.A.Sejati, T.Shirai, K.Narita, M.Takei

Physiological-induced conductive response evaluation in specific muscle compartments under hybrid of electrical muscle stimulation and voluntary resistance training by electrical impedance tomography
Frontiers in Physiology, 14(2023)
[doi:org/10.3389/fphys.2023.1185958]

B. Sun, P. N. Darma, K. Ikeda, T. Shirai, K. Narita, M. Takei

Relationship between fat thickness and current density magnitude in calf muscles compartments under electrical muscle stimulation (EMS) by coupling of electromagnetic simulation and electrical impedance tomography (ES-EIT)
Journal of Visualization, Springer, (26)1375-1388(2023)
[doi.org/10.1007/s12650-023-00932-4]

P.A.Sejati, B.Sun, P.N.Darma, T.Shirai, K.Narita, M.Takei

Multinode electrical impedance tomography (mnEIT) throughout whole-body electrical muscle stimulation (wbEMS)
IEEE Transactions on Instrumentation and Measurement,IEEE, 72,4505014(2023)
[doi.org/10.1109/TIM.2023.3282295]

I.N.Rifai, M.R.Baidillah, R.Wicaksono, S.Akita, M.Takei

Sodium concentration imaging in dermis layer by square-wave open electrical impedance tomography (SW-oEIT) with spatial voltage thresholding (SVT)
Biomedical Physics & Engineering Express, IOP, 9(4)045013(2023)
[doi.org/10.1088/2057-1976/acd4c6]

I.N.Rifai, M.R.Baidillah, R.Wicaksono, S.Akita, M.Takei

Quantification of dermis sodium concentration in skin layers by power spectral density drop of square-wave electrical impedance spectroscopy (PSDd-sEIS)
Measurement Science and Technology, IOP, 34(7)(2023)
[doi.org/10.1088/1361-6501/acc752]

N.Ikeno，Y.A.K.Prayitno，D.Kawashima, M.Takei

In situ 4D evaluation of carbon black volume fraction in stirring process of secondary battery cathode material slurry by multi-layered electrical resistance tomography (mlERT)
池野夏輝、川嶋大介、Y.A.K.Praytino、武居昌宏
多層電気レジスタンス・トモグラフィ(mlERT)法による二次電池正極材料スラリー攪拌工程におけるカーボンブラック(CB) のIn situ 4D体積濃度分布評価
粉体工学会誌, 60(3), 126-136(2023)
[doi.org/10.4164/sptj.60.126]

M.W.Waithera, M.W.Sifuna, D.W.Kariuki, J.K.Kinyua, F.T.Kimani, J.KL.Ng'ang'a, M.Takei

Antimalarial activity assay of artesunate-3-chloro-4(4-chlorophenoxy) aniline in vitro and in mice models
Parasitology Research, Springer, 122,979-988(2023)
[doi.org/10.1007/s00436-023-07801-x]

K. Sakai, P.N. Darma, P.A. Sejati, R. Wicaksono, H. Hayashi, M. Takei

Gastric functional monitoring by gastric electrical impedance tomography(gEIT) suit with dual-step fuzzy clustering
Scientific Reports,13(514)(2023)
［doi.org/10.1038/s41598-022-27060-7］

Z.Gao, P.N.Darma, D.Kawashima, M.Takei

A high accuracy voltage approximation model based on object-oriented sensitivity matrix estimation (OO-SME model ) in electrical impedance tomography
Journal of Electrical Bioimpedance13(1)106-115(2023)
[doi.org/10.2478/joeb-2022-0015]

増島麻里子、田崎牧子、依田智未、佐藤睦、橋爪由樹、秋田新介、武居昌宏

エンドオブライフ期にある患者の浮腫/リンパ浮腫治療とケア：マッピングレビュー
日本リンパ浮腫治療学会雑誌、6(1)18-23(2022)

S.Li, D.Kawashima, K.O.Okeyo, T.Murata，M.Takei

Assessment of anisotropic transmembrane transport coefficient vector of cell-spheroid under inhomogeneous ion concentration distribution fields by electrical impedance tomography
Measurement Science and Technology, 34(3)035701(2022)
[doi:10.1088/1361-6501/acaa4a]

R.Ogawa, S.Akita, M.Takei

Local-spatiotemporal change monitoring in extracellular fluid by time-variation-constraint sparse bayesian learning implemented into frequency-difference electrical impedance tomography (tvcSBL-fdEIT)
IEEE Transactions on Instrumentation and Measurement, IEEE, 72,4508214(2022)
[doi.org/10.1109/TIM.2022.3220282]

S.Li, D.Kawashima, Z.Gao, M.Takei

Detection of heterogeneous cells in cell spheroids by applying high-frequency second-order sensitivity matrix electrical impedance tomography (HSSM-EIT),
IEEE Open Journal of Instrumentation & Measurement,(4000609)2768-7236(2022)
[doi.org/10.1109/OJIM.2022.3212753]

Z.Wang, T.Zhao, X.Liu, C.Zhou, Y.Zhang，H.Murata, M.Takei

Clarification of the influences of superficial velocity Ug and particle diameter dp on the gas-solid flow characterizations in a rolling circulating fluidized bed (RCFB) by electrical capacitance tomography (ECT) method
AIP Advances,12(10)105202(2022)
[doi.org/10.1063/5.0098154]

N.Ikeno, Y.A.K.Prayitno, P.A.Sejati, D.Kawashima, M.Takei

In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT)
Advanced Powder Technology,33(10)103766(2022)
[doi.org/10.1016/j.apt.2022.103766]

D.Kawashima, H.Obara, M.Takei

Multiple regression fitting electrical impedance spectro-tomography for quantitative image reconstruction of dead cell fraction and cell concentration
IEEE Open Journal of Instrumentation & Measurement,1,1-8(2022),
[doi.org/10.1109/OJIM.2022.3198476]

D.Kawashima, T.Yuki, S.Li, M.Takei

Non-invasive imaging of ion concentration distribution around cell spheroids by electrical impedance tomographic sensor printed on circuit board under temporal compensation by ion transport impedance model
Biosensors and Bioelectronics, ELSEVIER,212(114432)(2022)
[doi.org/10.1016/j.bios.2022.114432]

P.N.Darma, D. Kawashima, M. Takei

Gastric electrical impedance tomography (gEIT) by 3D Jacobian matrix and dual-step fuzzy clustering post processing
IEEE Sensors Journal, 22(14),14336-14346(2022)
[doi.org/10.1109/JSEN.2022.3181052]

R.Wicaksono, P.N.Darma, A.Inoue, H.Tsuji, M.Takei

Wearable sectorial electrical impedance tomography and K-means clustering for measurement of gastric processes
Measurement Science and Technology,33(9)094002(2022)
[doi.org/10.1088/1361-6501/ac6e2e]

R.Ogawa, S.Akita, M.Takei

Image reconstruction algorithm of spatiotemporal local change-extractable electrical impedance tomography(EIT) by sparse bayesian learning (SBL)
Transactions of the JSME,88(910)(in Japanese)(2022)
小川良磨，秋田新介，武居昌宏
スパースベイズ学習(SBL)による時間・空間局所的変化を抽出できる電気インピーダンストモグラフィ(EIT)の画像再構成アルゴリズム
日本機械学会論文集（生体工学，医工学，スポーツ工学，人間工学）88(910)(2022)
[doi.org/10.1299/transjsme.22-00090]

P.A.Sejati, M.R.Baidillah, Y.A.K.Prayitno, K.A.Ibrahim, D.Kawashima, M.Takei

Detection of Cu particles volume fraction in vibrating Al-Cu mixtures by multiple-amplitude modulation implemented in impedance measurement system (mAM-IMS)
Mechanical Engineering Journal,9(3)(2022)
[doi.org/10.1299/mej.21-00379]

R.Wicaksono, P.N.Darma, K.Sakai, D.Kawashima, M.Takei

Imaging of gastric acidity scale by integration of pH-conversion model (pH-CM) into 3D-gastro electrical impedance tomography (3D-g-EIT)
Sensors and Actuators: B. Chemical,366(1)131923(2022)
[doi.org/10.1016/j.snb.2022.131923]

R.Ogawa, M.R.Baidillah, P.N.Darma, D.Kawashima, S.Akita, M.Takei

Multifrequency electrical impedance tomography with ratiometric preprocessing for imaging human body compartments
IEEE Transactions on Instrumentation & Measurement,71(4503114)(2022)
[doi.org/10.1109/TIM.2022.3166796]

S.Li, D.Kawashima, M.Sugawara, H.Obara, K.O.Okeyo, M.Takei

Study of transmembrane ion transport under tonicity imbalance using a combination of low frequency-electrical impedance spectroscopy (LF-EIS) and improved ion transport model
Biomedical Physics & Engineering Express,8(035024)(2022)
[doi.org/10.1088/2057-1976/ac5fc5]

M.W.Sifuna, D.Kawashima, K.Matsuura, H.Obara, Y.Nakajima, M.Takei

Simultaneous electrical online estimation of changes in blood hematocrit and temperature in cardiopulmonary bypass
Journal of Artificial Organs, Springer, (25)305-313(2022)
[doi.org/10.1007/s10047-022-01320-9]

P.A.Sejati, M.R.Baidillah, Y.A.K.Prayitno, K.A.Ibrahim, D.Kawashima, M.Takei

Copper particle detection method by in-situ resistance background implemented in conductance-path recognition algorithm (iRB-CPR) among dominant aluminum particles
Measurement,193(110983)(2022)
[doi.org/10.1016/j.measurement.2022.110983]

P.A.Sejati, N.Saito, Y.A.K.Prayitno, K.Tanaka, P.N.Darma, M.Arisato, K.Nakashima, M.Takei

On-line multi-frequency electrical resistance tomography (mfERT) device for crystalline phase imaging in high-temperature molten oxide
Sensors,22(3)1025(2022)
[doi.org/10.3390/s22031025]

K.Kimura, Y.A.K.Prayitno, D.Kawashima, P.A.Sejati, M.Takei

In situ particles deposition imaging in centrifugal fields by implemented SPH-DEM-ANN into linear sensor-type wireless electrical resistance tomography (lsWERT)
Powder Technology,398(117140)(2022)
[doi.org/10.1016/j.powtec.2022.117140]

K.Tanaka, Y.A.K.Prayitno, P.A.Sejati, D.Kawashima, M.Takei

Multi-electrode impedance void fraction method by Hilbert-Schmidt independence criterion (HSIC) Lasso and plural long short-term memory (PLSTM)
Transactions of the JSME(in Japanese) 88(907),21-00294(2021)
[doi.org/10.1299/transjsme.21-00294]
田中 光二，ヨセフス・アルディーノ・クルニアント・プライトノ，プリマ・アスマラ・セジャティ，川嶋 大介，武居 昌宏.
ヒルベルトシュミット独立基準ラッソと多重長短期記憶による多電極インピーダンス・ボイド率推定法
日本機械学会論文集,88(907),21-00294(2021)

M.W.Sifuna, M.R.Baidillah, D.Kawashima, P.N.Darma, E.O.Odari, M.Takei

Determination of sensitive frequency margin for aggregated protein concentration quantification by fd-electrical impedance tomography
Measurement,186(110135)(2021)
[doi.org/10.1016/j.measurement.2021.110135]

Y.A.K.Prayitno, P.A.Sejati, T.Zhao, Y.Iso, D.Kawashima M.Takei

In situ measurement of hindered settling function in decanter centrifuge by periodic segmentation technique in wireless electrical resistance detector (psWERD)
Advanced Powder Technology,33(1)(2021)
[doi.org/10.1016/j.apt.2021.11.022]

R.Wicaksono, M.R.Baidillah, P.N.Darma, A.Inoue, H.Tsuji, M.Takei

Pocket electrical impedance tomography (p-EIT) system with wide impedance range buffered mirrored current source (BMCS) with assist of filter-trained quasi-3D method for functional gastric-shaped imaging
IEEE Transactions on Instrumentation & Measurement,70(1-17)(2021)
[doi.org/10.1109/TIM.2021.3124059]

K.Tanaka, Y.A.K.Prayitno, P.A.Sejati, D.Kawashima, M.Takei

Void fraction estimation in vertical gas-liquid flow by plural long short-term memory with sparse model implemented in multiple current-voltage system (pLSTM-SM-MCV)
Multiphase Science and Technology,34(2),25–42(2022)
[doi.org/10.1615/multscientechn.2021039801]

B.Sun, P.N.Darma, T.Shirai, K.Narita, M.Takei

Electrical-tomographic imaging of physiological-induced conductive response in calf muscle compartments during voltage intensity change of electrical muscle stimulation (vic-EMS)
Physiological Measurement,42(9)095007(2021)
[doi.org/10.1088/1361-6579/ac2265]

A.Zhang, D.Kawashima, H.Obara, M.Takei

Boundary reflection derivation method for intracellular structure change based on GHz electrical impedance spectroscopy
IEEE Transactions on Microwave Theory and Techniques, IEEE, 69(11)4678-4688(2021)
[doi.org/10.1109/TMTT.2021.3105437]

R.Ogawa, A.Hallas-Potts, H.Wu, J.Jia, P.O.Bagnaninchi

Measuring 3D cell culture viability in multiple 3D printed scaffolds within a single miniature electrical impedance tomography sensor
Advanced Engineering Materials, 23(10)(2021)
[doi.org/10.1002/adem.202100338]

I.A.Dharma, D.Kawashima, M.R.Baidillah, P.N.Darma, M.Takei

In-vivo viscoelastic properties estimation in subcutaneous adipose tissue by integration of poroviscoelastic-mass transport model (pve-MTM) into wearable electrical impedance tomography (w-EIT)
Biomedical Physics & Engineering Express, 7(4)(2021)
[doi.org/10.1088/2057-1976/abfaea]

B.Sun, M.R.Baidillah, P.N.Darma, T.Shirai, K.Narita, M.Takei

Evaluation of the effectiveness of electrical muscle stimulation (EMS) on human calf muscles via frequency difference electrical impedance tomography (fd-EIT)
Physiological Measurement, 42(3)035008(2021)
[doi.org/10.1088/1361-6579/abe9ff]

I.A.Dharma, D.Kawashima, M.R.Baidillah, P.N.Darma, M.Takei

Albumin diffusivity coefficient estimation in imitated porous structure of interstitial space by integration of albumin diffusion model (ADM) to electrical impedance tomography (EIT)
Measurement Science and Technology, 32(5)055701(2021)
[doi.org/10.1088/1361-6501/abd96e]

D.Kawashima, S.Li, H.Obara, M.Takei

Low-frequency impedance-based cell discrimination considering ion transport model in cell suspension
IEEE Transactions on Biomedical Engineering, 68(3)1015-1023(2021)
[doi.org/10.1109/TBME.2020.3002980]

P.N.Darma, M.Takei

High-speed and accurate meat composition imaging by mechanically-flexible electrical impedance tomography with k-nearest neighbor and fuzzy k-means machine learning approaches
IEEE Access, 9,38792-38801(2021)
[doi.org/10.1109/ACCESS.2021.3064315]

K.Tanaka, D.Kawashima, Y.Takakura, M.Takei

Accurate void fraction estimation by plural long short term memory (pLSTM) applying to multiple voltage current system in gas-liquid flows
IEEE Sensors Journal, 218(8)10039-10050(2021)
[doi.org/10.1109/JSEN.2021.3058156]

H.Chen, J.Yao, L.Yang, K.Liu, B.Chen, J.Li, M.Takei

Development of a portable electrical impedance tomography device for online thrombus detection in extracorporeal-circulation equipment
IEEE Sensors Journal, 21(3)3653-3659(2021)
[doi.org/10.1109/JSEN.2020.3022078]

A.Zhang, D.Kawashima, H.Obara, M.Takei

Extraction method of cell's complex permittivity in cell solutions from measured impedance by GHz electrical impedance spectroscopy
IEEE Sensors Journal, 21(3)2505-2516(2021)
[10.1109/JSEN.2020.3023912]

N.Sato, D.Kawashima, M.Takei

Concentration profiles of ions and particles under hydrodynamic focusing in Y-shaped square microchannel
Nature, Scientific Reports, 11(1)1-9(2021)
[doi.org/10.1038/s41598-021-82259-4]

T.Karatsu, Z.Wang, T.Zhao, D.Kawashima, M.Takei

Dynamic fields visualization of carbon-black (CB) volume fraction distribution in lithium-ion battery (LIB) cathode slurry by electrical resistance tomography (ERT),
The Journal of the Society of Powder Technology, Japan, 58,119-126(2021)
唐津貴志，Zhilong Wang，Tong Zhao，川嶋大介，武居昌宏.
電気レジスタンストモグラフィ(ERT)法を用いたリチウムイオン二次電池正極スラリー内カーボンブラック(CB)体積濃度分布の動的場可視化計測,
粉体工学会誌, 58,119-126(2021)

Y.A.K.Prayitno, T.Zhao, Y.Iso, M.Takei

In-situ measurement of sludge thickness in high-centrifugal force by optimized particle resistance normalization for wireless electrical resistance detector (WERD)
Measurement Science and Technology,32(3)034001(2020)
[doi.org/10.1088/1361-6501/abc108]

K.Tran, D.Kawashima, M.Sugarawa, H.Obara, K.O.Okeyo, M.Takei

Development of a noise elimination electrical impedance spectroscopy (neEIS) system for single cell identification
Sensing and Bio-Sensing Research, 30,100381(2020)
[DOI:10.1016/j.sbsr.2020.100381]

A.K.Tran, D.Kawashima, K.Hikosaka, K.O.Okeyo, M.Takei

Quantitative early Malaria-infected red blood cell detection method based on 3D multi-shell dielectric model
Chemistry and Micro-Nano Systems, 19(2)24-34(2020)
化学とマイクロ・ナノシステム((一社)化学とマイクロ・ナノシステム学会会誌)

P.N.Darma, M.R.Baidillah, M.W.Sifuna, M.Takei

Real-time dynamic imaging method for flexible boundary sensor in wearable electrical impedance tomography
IEEE Sensors Journal,20(16)9469-9479(2020)
[doi.org/10.1109/JSEN.2020.2987534]

M.W.Sifuna, M.Koishi, T.Uemura, H.Tatekawa, H.Haneishi, A.Sapkota, M.Takei

Connector sensors for permittivity based thrombus monitoring in extra corporeal life support
Journal of Artificial Organs,24(1)15-21(2020)
[doi.org/10.1007/s10047-020-01190-z]

Z.Wang, T.Zhao, K.Liu, M.Takei

Clarification of an improved cluster renewal model (ICRM) for heat transfer characteristics in a rolling circulating fluidized bed (RCFB)
Advanced Powder Technology,31(7)2866-2879(2020)
[DOI:10.1016/j.apt.2020.05.015]

A.Zhang, D.Kawashima, H.Obara, M.Takei

Analysis of influence of fibrinogen concentration on blood dielectric properties by GHz electrical impedance spectroscopy
Journal of Biorheology, 34(1)38-46(2020)
[DOI 10.17106/jbr.34.38]

Y.A.K.Prayitno, T.Zhao, Y.Iso, M.Takei

Distribution of particle sedimentation thickness under constant relative centrifugal force in rotating separation system using wireless resistance detector
Mechanical Engineering Journal,7(3)19-00577(2020)
[doi.org/10.1299/mej.19-00577]

R.Ogawa, M.R.Baidillah, S.Akita, M.Takei

Investigation of physiological swelling on conductivity distribution in lower leg subcutaneous tissue by electrical impedance tomography
Journal of Electrical Bioimpedance, 11(1)19-25(2020)
[doi.org/10.2478/joeb-2020-0004]

C.O.Maung, D.Kawashima, H.Oshima, Y.Tanaka, Y.Yamane, M.Takei

Particle volume flow rate measurement by combination of plug flow shape model and dual electrical capacitance tomography sensor
Powder Technology,364,310-320(2020)
[doi.org/10.1016/j.powtec.2020.01.084]

C.O.Maung, D.Kawashima, P.N.Darma, M.Takei

Real-time controlling particle distribution in pneumatic conveyance by electrical capacitance tomography with airflow injection system (ECT-AIS)
Advanced Powder Technology,31(6)2530-2540(2020)
[DOI:10.1016/j.apt.2020.04.019]

M.W.Sifuna, M.R.Baidillah, A.Sapkota, M.Takei

A Cole-Cole dielectric relaxation analysis of albumin and γ-globulins for protein quantification by electrical impedance spectroscopy
Electroanalysis, Wiley, 32(5)1121-1129(2020)
[doi.org/10.1002/elan.201900576]

N.Sato, J.Yao, D.Kawashima, M.Takei

Numerical study of enhancement of positive dielectrophoresis particle trapping in electrode-multilayered microfluidic device
IEEE Transactions on Biomedical Engineering, 66(10)2936-2944(2019)
[doi.org/10.1109/TBME.2019.2898876]

M.R.Baidillah, Z.Gao, A.S.Iman, M.Takei

Adaptive noise cancellation algorithms implemented onto FPGA-based electrical impedance tomography system
Electrical Science & Engineering, 01(02)15-25(2019)(ISSN Online: 2661-3247)
[doi.org/10.30564/ese.v1i2.1043]

Z.Wang, T.Zhao, M.Takei

Evaluation of particle dispersion behaviours in lithium-ion battery (LIB) slurry by electrical impedance spectra-tomography (EIST) method
Transactions of the Institute of Measurement and Control, 42(4)704-715(2019)
[doi.org/10.1177/0142331219857414]

M.Jeon, M.Do, D.Kawashima, M.Takei

Application of artificial neural network model to a voltage-current system in the estimation of void-fraction in a gas-liquid flow
IEEE Sensors Journal, 19(13)5098-5109(2019)
[doi.org/10.1109/JSEN.2019.2903590]

P.N.Darma, M.Baidillah, M.Sifuna, M.Takei

Improvement of image reconstruction in electrical capacitance tomography (ECT) by sectorial sensitivity matrix using k-means clustering algorithm
Measurement Science and Technology, 30(7)075402(2019)
[doi.org/article/10.1088/1361-6501/ab1022]

M.Jeon, D.Kawashima, Y.Takakura, M.Takei

Measurement of void fraction in two phase flow for unstable liquid conductivity in multi-electrode voltage-current system using a normalization equation with two correction parameters
IEEE Sensors Journal, 19(18)8215-8223(2019)
[doi.org 10.1109/JSEN.2019.2919618]

Z.Jiang, J.Yao, L.Wang, J.Huang, T.Zhao, M.Takei

Development of a portable electrochemical impedance spectroscopy system for bio-detection
IEEE Sensors Journal, 19(15)5979-5987(2019)
[doi.org/10.1109/JSEN.2019.2911718]

J.Yao, M.Takei

Microfluidic Device Embedding Electrodes for Dielectrophoretic Manipulation of Cells - A Review
Electrophoresis, 40,1166-1177(2019)
[doi.org/10.1002/elps.201800440]

X.Liu, Y.Cui, T.Zhao, D.Kawashima, H.Obara, M.Takei

Quantitative detection of living yeast fraction from mixed living and dead cell solution by micro electrical impedance spectroscopy
IEEE Access, 7,33970-33977(2019)
[doi.org/10.1109/ACCESS.2019.2902576]

T.Zhao, Y.Iso, R.Ikeda, K.Okawa, M.Takei

Real-time measurement of particle volume fraction in centrifugal fields by wireless electrical resistance detector
Flow Measurement and Instrumentation, Elsevier, 65,90-97(2019)
[doi.org/10.1016/j.flowmeasinst.2018.11.010]

Y.Atagi, T.Zhao, Y.Iso, M.Takei

Real-time imaging of particles distribution in centrifugal particles-liquid two phase fields by wireless electrical resistance tomography (WERT) system
IEEE Access(IF=3.557), 7,12705-12713(2019)
[doi.org/10.1109/ACCESS.2019.2893041]

M.Baidillah, D.Kawashima, M.Takei

Compensation of volatile-distributed current due to unknown contact impedance variance in electrical impedance tomography sensor
Measurement Science and Technology, Institute of Physics, 30(3)034002(2019)
[doi.org/10.1088/1361-6501/aafb22]

C.Tan, S.Lv, F.Dong, M.Takei

Image reconstruction based on convolutional neural network for electrical resistance tomography
IEEE Sensors Journal, 19(1)196-204(2019)
[doi.org/10.1109/JSEN.2018.2876411]

Z.Wang, T.Zhao, M.Takei

Clarification of particle dispersion behaviors based on the dielectric characteristics of cathode slurry in lithium-ion battery (LIB)
Journal of The Electrochemical Society, 166(2)A35-A46(2019)
[doi.org/10.1149/2.1081816jes]

T. Kiet, A.Sapkota , M.Takei

Linear Relationship between Cytoplasm Resistance and Hemoglobin in Red Blood Cell Hemolysis by Electrical Impedance Spectroscopy & Eight-parameter Equivalent Circuit
Biosensors and Bioelectronics, 119,103-109(2018)
[doi.org/10.1016/j.bios.2018.08.012]

N. Sato, J. Yao, M. Sugawara, M. Takei

Numerical Study of Particle-fluid Two-phase Flow under AC Electrokinetics in Electrode-multilayered Microfluidic Device
IEEE Transactions on Biomedical Engineering(TBME), 66(2)453-463(2018)
[doi.org/10.1109/TBME.2018.2849004]

J.Li, D.Kikuchi, A.Sapkota, M.Takei

Quantitative Evaluation of Electrical Parameters Influenced by Blood Flow Rate with Multiple-Frequency Measurement Based on Modified Hanai Mixture Formula
Sensors & Actuators: B.Chemical, Elsevier(Impact factor 5.4)　268(B)7-14(2018)
[doi.org/10.1016/j.snb.2018.04.077]

J.Li, A.Sapkota, M.Takei

Red Blood Cells Aggregability Measurement of Coagulating Blood in Extracorporeal Circulation System with Multiple-frequency Electrical Impedance Spectroscopy
Biosensors and Bioelectronics, Elsevier(Impact Factor 7.78), 112,79-85(2018)
[doi.org/10.1016/j.bios.2018.04.020]

Z.Wang, T.ZHAO, J.YAO, K.LIU and M.TAKEI

Influence of Particle Size on the Exit Effect of a Full-scale Rolling Circulating Fluidized Bed
Particulate Science and Technology, 36(5)541-551(2018)
[DOI: 10.1080/02726351.2016.1276496]

X. Liu, , T. Zhao, H. Obara, Y. Cui, M. Takei

Image Reconstruction under Contact Impedance Effect in Micro Electrical Impedance Tomography Sensors
IEEE Transactions on Biomedical Circuits and Systems (IF=2.937) 12(3)623-631(2018)
[doi.org/10.1109/TBCAS.2018. 2816946]

Z. Wang,T. Zhao,M. Takei

Morphological Structure Characterizations in Lithium-Ion Battery (LIB) slurry under Shear Rotational Conditions by On-line Dynamic Electrochemical Impedance Spectroscopy (EIS) method
Journal of The Electrochemical Society, 164(9)A2268-A2276(2017)
[doi.org/10.1149/2.0391712jes]

J. Yao, M. Sugawara, H. Obara, T. Mizutani, M. Takei

Distinct Motion of GFP-tagged Histone Expressing Cells under AC Electrokinetics in Electrode-multilayered Microfluidic Device
IEEE Transactions on Biomedical Circuits and Systems(IF=2.937), 11(6)1450-1458(2017)
[doi.org/10.1109/TBCAS.2017.2729584]

M.R.Baidillah, Al-Amin Iman, Yue Sun and Masahiro Takei

Electrical Impedance Spectro-Tomography (EIST) based on Dielectric Relaxation Model
IEEE Sensors Journal, 17(24) On Page(s): 8251-8262,Print ISSN: 1530-437X,Online ISSN:1558-1748
[doi.org/10.1109/JSEN.2017.2710146]

M.R.Baidillah and M.Takei

Exponential Model Normalization for Electrical Capacitance Tomography with External Electrodes under Gap Permittivity Conditions
Measurement Science and Technology,Institute of Physics 28(6)064002(2017)
[doi.org/10.1088/1361-6501/aa6a02]

J.Yao and M.Takei

Application of Process Tomography to Multiphase Flow Measurement in Industrial and Biomedical Fields - A Review
IEEE Sensors Journal, 17(24)8196-8205, Print ISSN:1530-4317X, Online ISSN:1558-1748 (2017)
[doi.org/10.1109/JSEN.2017.2682929]

Z.Wang, T.Zhao, J.Yao, Y.Kishikawa and M.Takei

Evaluation of the Electrochemical Characterizations of Lithium-ion Battery (LIB) slurry with 10-parameter Electrical Equivalent Circuit (EEC)
Journal of The Electrochemical Society,164(2)A8-A17(2017)
[doi.org/10.1149/2.1421614jes]

本多正明,都徳照,武居昌宏

後縁に切欠きのある翼型を用いた垂直軸型風車周りの流れのPIVによる計測
日本機械学会論文集（流体工学，流体機械）Vol.82, No.843 [DOI:10.1299/transjsme.16-00241] (2016)

菅原路子，渡辺健太郎，劉浩，武居昌宏

共焦点レーザ顕微鏡による遊走時線維肉腫細胞の焦点接着斑分布解析
実験力学, Vol.16, No.2, pp154-161(2016)

D. Nguyen Huu, D. Kikuchi, O. Maruyama, A. Sapkota, M. Takei

Cole-Cole Analysis of Thrombus Formation in an Extracorporeal Blood Flow Circulation Using Electrical Measurement
Flow Measurement and Instrumentation, Elsevier,vol.53, pp172-179 [DOI: 10.1016/j.flowmeasinst.2016.06.025] (2016)

Tong Zhao, Jiafeng Yao, Kai Liu, and Masahiro Takei

Investigation of Particle Inertial Migration in High Particle Concentration Suspension Flow by Multi-electrodes Sensing (MES) and Eulerian-Lagrangian Simulation in a Square Microchannel
Biomicrofluidics, AIP, Vol. 10, pp.204120 [DOI:10.1063/1.4946012] (2016)

T.Zhao, Y.Nakamura, H.Murata and M.Takei

The Effect of Rolling Amplitude and Period on Particle Distribution Behavior in a Rolling Circulating Fluidized Bed
Powder Technology, Elsevier, Vol. 294, pp.484-492 [DOI:10.1016/j.powtec.2016.03.018] (2016)

J. Yao, H. Obara, Achyut Sapkota, and Masahiro Takei

Development of Three-dimensional Integrated Microchannel-Electrode System to Understand the Particles Movement with Electrokinetics
Biomicrofludics, AIP, Vol.10(2), pp. 024105

Y.Hirose,K.Hata, M.Sugawara and M.Takei

Sensing Performance of Dielectric Sensor in Mixed Melting Polymer Pellets for Waste Plastic Separation
Advanced Powder Technology, Elsevier,Vol. 26, No.6 pp.1687-1695 [DOI:10.1016/j.apt.2015.10.006] (2015)

Y.Hirose,A.Sapkota,M.Sugawara and M.Takei

Noninvasive real-time 2D imaging of temperature distribution during the plastic pellet cooling process by using electrical capacitance tomography
Measurement Science and Technology,Institute of Physics, Vol. 27, No.1 pp.015403 (2015)

菅原路子, 小倉章裕, 劉浩, 武居昌宏

マウス線維芽細胞の方向転換遊走時における定性的4ステップの体系化
ライフサポート, 2015, 掲載決定

菅原路子, 狩野達也, 劉浩, 武居昌宏

テンプレート・マッチング法による異なる基質上の集団細胞遊走解析
ライフサポート,Vol：27 No：3 pp：97-104 (2015)

J.Yao, A.Sapkota, H.Konno, H.Obara, M.Sugawara, and M.Takei

Non-invasive On-line Measurement of Particle Size and Concentration in Liquid-Particle Mixture by Estimating Equivalent Circuit of Electrical Double Layer
Particulate Science and Technology,Taylor & Francis,Vol.34, No.5, pp.517-525 [DOI:10.1080/02726351.2015.1089345](2015)

J.Yao, T.Kodera, H.Obara, M.Sugawara, and M.Takei

Spatial Concentration Distribution Analysis of Cells in Electrode-Multilayered Microchannel by Dielectric Property Measurement
Biomicrofluidics, AIP, Vol.9, pp. 044129 [DOI:10.1063/1.4929824] (2015)

A.Sapkota, T.Fuse, M.Seki, O.Maruyama, M.Sugawara, and M.Takei

Application of Electrical Resistance Tomography for Thrombus Visualization in Blood
Flow Measurement and Instrumentation, Elsevier, Vol.46, pp.334-340
[DOI:10.1016/j.flowmeasinst.2015.06.023] (2015)

N.T.Ali Othman, H.Obara, A.Sapkota and M.Takei

Measurement of Particle Migration in Micro Channel by Multi Capacitance Sensing Method
Flow Measurement and Instrumentation, Elsevier, Vol.45, pp.162-169
[DOI: 10.1016/j.flowmeasinst.2015.06.015] (2015)

Y.Asakura, A.SAPKOTA, O.Maruyama, R.Kosaka, T.Yamane, M.Takei

Relative permittivity measurement during thrombus formation process by using dielectric relaxation method in various hematocrit values
Journal of Artificial Organs, Vol.18, pp.346-353
[DOI: 10.1007/s10047-015-0847-8] (2015)

H.Kim, M.Takei, H.Lee, Y.Lee, Y.Choi, D.Doh

Performance analyses for a cyclone type filter
Journal of Thermal Science, Vol. 24, No.3 pp.290-294 (2015)

T.Zhao, T.Eda, S.Achyut, J.Haruta, M.Nishio and M.Takei

Investigation of Pulsing Flow Regime Transition and Pulse Characteristics in Trickle-bed Reactor by Electrical Resistance Tomography
Chemical Engineering Science, Elsevier, Vol. 130, No.7 pp.8-17,[DOI:10.1016/j.ces.2015.03.010](2015)

T.Zhao, Z.Wang ,M.Takei, K.Liu and Y.Cui

Investigation of the Dispersion Behavior of Inertial Particles within Accelerated Domain
Journal of Applied Fluid Mechanics, Vol.8, No.1, pp.103-112, 2015

T.Fuse, A.Sapkota, O.Maruyama, R.Kosaka, T.Yamane, M.Takei

Analysis of the influence of volume and red blood cell concentration of a thrombus on the permittivity of blood
Journal of Biorheology, Vol.29, pp.15-18, [DOI: 10.17106/jbr.29.15] (2015)

T.Zhao, K.Liu, H.Murata, K.Harumi, M.Takei

Investigation of Bed-to-wall Heat Transfer Characteristics in a Rolling Circulating Fluidized Bed
Powder Technology, Powder Technology, Elsevier, Vol. 269, pp 46-54, [DOI:10.1016/j.powtec.2014.08.068] (2014)

Z.Wang, T.Zhao, K.Liu, M.Takei

Euler-Lagrange simulation of the fine particle discharge rate under accelerated air ventilation circumstances
Japanese Journal of Multipurpose Flow, Vol.28, No.3 pp 355-365 (2014)

朝倉悠太, サプコタアチュタ, 丸山修, 小阪亮, 山根隆志, 武居昌宏

誘電緩和法によるヘマトクリットをパラメータとした赤血球の特性周波数と血栓形成過程の計測
日本機械学会論文集, Vol.80, No.816, [DOI: 10.1299/transjsme.2014bms0245](2014)

T. Zhao, K. Liu, and M. Takei

Experimental and numerical investigation of particle distribution behaviors in a rolling circulating fluidized bed
Powder Technology, Elsevier, Vol. 258 pp 38-48 (2014)

朝倉悠太，サプコタ・アチュタ，丸山修，小坂亮，山根隆志，武居昌宏

電気抵抗トモグラフィー法を用いた赤血球沈降における断面濃度分布の計測
日本実験力学会誌，Vol.14，No．1，pp 46-53 （2014）

D.Doh, J.Yum, M.Kim, G.Ryu, M.Takei

Development of a concentration measurement technique for steady state solid-liquid mixing using a neural network
Journal of Thermal Science, Vol. 22 Issue 5, pp 478-483 (2013)

本多 正明，武居 昌宏，都 徳照

コンディショナル・サンプリングＰＩＶによる風力発電用垂直軸型風車周りの流れの計測
日本機械学会論文集B編, Vol. 79, No. 808, pp.2572-2576 (2013)

朝倉悠太，サプコタ・アチュタ，丸山修，小阪亮，山根隆志，武居昌宏

プロセス・トモグラフィー法による静止血液中の沈降血栓の時間空間計測
可視化情報学会論文集 Vol.33 No10, pp17-24 (2013)

アリオスマン・ヌルタンティヤニ，小原弘道，武居昌宏

静電容量測定法によるマイクロ流路内の微粒子濃度分布の計測
混相流（日本混相流学会誌）Vol. 27 No. 2, pp.152-159 (2013)

T.Eda, A.Sapkota, J.Haruta, M.Nishio, and M.Takei

Experimental Study on Liquid Spread and Maldistribution in the Trickle Bed Reactor Using Electrical Resistance Tomography
Journal of Power and Energy Systems, Vol. 7 No.2　pp.94-105 (2013)

N.Othman, H.Obara and M.Takei

Cross-sectional Capacitance Measurement of Particle Concentration in a Microchannel with Multi-layered Electrodes
Flow measurement and instrumentation, Elsevier, Vol. 31　pp.47-54 (2013)

N.Othamn, H.Obara, J.Choi, and M.Takei

Temporally Transitional Cross-Sectional Capacitance Measurement of Micro Particles Concentration in the Microchannel　Paper number: 11-S16
Japanese Journal of Multiphase Flow Vol. 25 No. 5 (2011)　pp.423-434

A.Sapkota, M.Takei, T.Yamane and Y.Shinoda

Impedance Spectroscopic Measurement of Particle Concentration in Solid-Liquid Two-Phase Flow
Journal of JSEM, Vol.11, Special Issue (2011) （日本実験力学会論文誌）SS162-SS167

VS.Ghali, R.Mulaveesala and M.Takei

Frequency modulated thermal wave imaging for non destructive testing of carbon fiber reinforced plastic materials Measurement Science and Technology
IOP Science Meas. Sci. Technol. 22 (2011) 104018 (4pp)

T.Zhao, K.Liu, J.Choi, Y.Cui, M.Takei, D.Doh

Wavelet Analysis of Particle Distribution in Down-flow Fluidized Bed based on Electrical Capacitance Tomography Images
Powder Technology, Volume 211, Issues 2-3, 10-25 August 2011, Pages 264-274

M.Honda, T.Noguchi, D.H.Doh, M.Takei and S.Ishii

Conditional Sampling Stereoscopic-PIV Measurement around Rotating and Revolving Cylinder in Internal Swirly Flow Generated by Tangential Suction Jet
Journal of Japanese Society for Experimental Mechanics （日本実験力学会論文誌）Vol.11, No.1 (2011), pp 41-46

T.Zhao, K.Liu, Y.Cui and M.Takei

Three-dimensional simulation of the particle distribution in a downer using CFD-DEM and comparison with the results of ECT experiments
Advanced Powder Technology, Elsevier Vol.21 (2010), pp. 630-640

J.E.Choi and M.Takei

Fabrication of Microchannel with 60 electrodes and Resistance measurement
Flow Measurement and Instrumentation, Elsevier Vol.21, Issue3 (2010) pp.178-183

T.Zhao, M.Takei and D.H.Doh

ECT Measurement and CFD-DEM Simulation of Particle Distribution in a down-flow fluidized bed
Flow Measurement and Instrumentation, Elsevier Vol.21, Issue3 (2010) pp.212-218

M.Honda, T.Noguchi, D.H.Doh, M.Takei and S.Ishii

Conditional Sampling Stereoscopic PIV Measurements around the Blade of the Vertical Axis Wind Turbine
Journal of Japanese Society for Experimental Mechanics, (日本実験力学会誌) Vol.10 (2010) pp.73-78

K.Oshi, J.E.Choi, H.Obara, M.Takei

Measurement of Dielectrophoretic Velocities of Microparticles in a Minichannel
Journal of Japanese Society for Experimental Mechanics (日本実験力学会誌) Vol.10 (2010) pp.79-84

N.Guan, L.Zhigang, M.Takei and C.Zhang

Boiling Heat Transfer in Micro-Capillary-Grooves with Different Structured Surfaces of Micro-Cavities
Experimental Heat Transfer, Taylor & Francis Vol.23 Issue3 (2010) pp.217-234

T.Zhao and M.Takei

CFD-DEM Simulation of Particle Behaviors under Acceleration in a Solid Air Two Phase Flow
日本冷凍空調学会論文集 Vol27 No.2 (2010) pp.161-168

J.E.Choi, M.Takei and D.H.Doh

Proposal of Resistivity Distribution Tomography Measurement Method of Two-Phase Flow in Microchannel for Heat Exchanger
日本冷凍空調学会論文集 Vol27 No.2 (2010) pp.139-147

本多正明、野口常夫、都徳熙、武居昌宏、石井進

接線方向噴流による管内旋回流中の棒状物体周囲流れの空間周波数解析
噴流工学(日本ウォータージェット学会誌) Vol.26, No.3 (2010) pp.19-27

J.E.Choi, M.Takei and D.H.Doh

Simulation of the relationship between the Current Pattern and Particle Distribution in Electrical Resistance Tomography
Japanese Journal of Multiphase Flow 混相流, (日本混相流学会論文集) Vol.24, No.2 (2010) pp.179-188

藤原琢也、趙桐、武居昌宏

DEMシミュレーションによるダウナー内の粒子挙動の可視化とトモグラフィー画像との比較
日本機械学会論文集B編, Vol.76, No.763 (2010) pp.116-123

J.E.Choi, T.Zhao and M.Takei

Real-Time Visualization of Multiphase Flow by Means of Electrical Proess Tomography
Journal of Research Institute of Science and Technology, Colleges of Science and Technology, Nihon University No.120 (2010) pp.11-20

崔題恩、武居昌宏

マイクロ・プロセス・トモグラフィー法における電流パターンと二相流再構成画像のシミュレーション
可視化情報学会論文集 Vol.30, No.3 (2010) pp.17-24

T.Zhao and M.Takei

Discussion of the solids distribution behavior in a downer with new designed distributor based on concentration images obtained by electrical capacitance tomography
Powder Technology, Elsevier Vol.198, Issue1 (2010) pp.120-130

河府賢治、越智光昭、武居昌宏、平井康裕

超音波による粒体プラグ輸送における圧力損失低減
粉体工学会会誌 Vol.46, No.12, pp.858-864 (2009)

D.H.Doh, H.J.Jo, T.G. Hwang, B.Y.Koo, M.Takei, T.Tanaka, T.Uemura,

Developments of an Adaptive Stereoscopic-PIV System for
the analyses of the flow-structure interactions(FSI) of air-lifted bodies、Chemical Engineering Communications, Taylor & Francis, Taylor & Francis Vol. 196 , No. 122 (2009) pp.1437-1450

河府賢治、越智光昭、武居昌宏、平井康裕

超音波による粒子群摩擦低減に及ぼす粒子物性の影響
粉体工学会会誌 Vol.46, No.5, pp.330-337 (2009)

野口常夫、武居昌宏、石井進

垂直軸型風力発電機用風車の開発と翼端渦の流れの計測
噴流工学(日本ウォータージェット学会誌) Vol.25, No.3 (2009) pp.4-12

M.Takei, T.Zhao and K.Yamane

Measurement of Particle Concentration in Powder Coating Process Using Capacitance Computed Tomography and Wavelet Analysis
Powder Technology, Elsevier Vol.193 (2009) pp.93-100

H-J Jo, D-H Doh, J-E Choi, M.Takei

Flow field separating technique in bubbly flow using discrete wavelet
Journal of Korean navigation and port research, Vol.32 (10) pp.777-783

T. Zhao and M.Takei

Design of Plug Formation Detector Based on Capacitance Measurement Technique
Advanced Powder Technology, VSP Vol.19, No.6 (2008) pp.559-572

J.-E.Choi, M.Takei, D.H.Doh, H.-J.Jo, Y. A.Hassan and J.Ortiz-Villafuerte

Decompositions of Bubbly Flow PIV Velocity Fields Using Discrete Wavelets Multiresolution and Multi-Section Image Method
Nuclear Engineering and Design, Elsevier Vol.238 (2008) pp.2055-2063

T.Noguchi, M.Honda, M.Takei, K.Hoshino, S.Ishii and M.Ochi

Particles Concentration Measurement of Fluidized Bed in Wavy Flow by Impedance Method
Journal of Japanese Society for Experimental Mechanics, JSEM Vol. 8 (2008) pp.37-42

K.Kofu, M.Ochi and M.Takei

Derivation of Predicted Pressure Drop Equation on Granular Particle Plug Transportation in Horizontal Pipe
Journal of Fluid Science and Technology, JSME Vol.3, No.1 (2008) pp.104-115

M.Takei, D.H.Doh, M.Ochi

Electrical CT Image Reconstruction Technique for Powder Flow in Petroleum Refinery Process
Experiments in Fluids, Springer Vol.44, No.3 (2007) pp.481-490

L.Zhigang, G.Ning, M.Takei

An Experimental Investigation of Single-Phase Heat Transfer in 0.045mm to 0.141mm Microtubes
Nanoscale and Microscale Thermophysical Engineering, Taylor &Francis Vol.11 (2007) pp.1-17

武居昌宏、都徳照、越智光昭

水平管内におけるプラグ自然形成に関するキャパシタンスCT計測
非破壊検査((社)日本非破壊検査協会学会誌) Vol.56, No.12 (2007) pp.636-642

野口常夫、武居昌宏、星野邦弘、石井　進、越智光昭

リチウム回収システム内脈動流を伴う粒子の体積率計測
噴流工学(日本ウォータージェット学会誌) Vol.24, No.3 (2007) pp.16-24

河府賢治、越智光昭、武居昌宏

鉛直管粒体プラグ輸送の粒子流動を考慮した粒子速度と圧力損失予測式の提案
粉体工学会会誌 Vol.44, No.10 (2007) pp.723-731

河府賢治、越智光昭、武居昌宏

水平管粒体プラグ輸送における圧力損失予測式の導出（粒子種類および管内径に対する高応用性）
日本機械学会論文集（B編）Vol.73, No.733 (2007) pp.1868-1875

武居昌宏、都徳熙、越智光昭

モーダルウェーブレットによる気泡流PIV画像の解析
噴流工学(日本ウォータージェット学会誌) Vol.24, No.2 (2007) pp.4-11

T.Zhao, M.Takei, K.Masaki, R.Ogiso, K.Nakao, A.Uchimura

Sensor Design and Image Accuracy for Application of Capacitance CT to the Petroleum Refinery Process
Flow Measurement and Instrumentation, Elsevier Vol.18 (2007) pp.268-276

田中健嗣、武居昌宏、都徳照、植村知正、斎藤兆古

３D－PIVとモーダルウェーブレット画像処理による旋回流搬送装置内の流れの可視化
可視化情報学会論文集 Vol.27, No.6 (2007) pp.31-38

田中健嗣、武居昌宏、都徳照、植村知正

ステレオPIVを用いた旋回流中の配向性棒状物体周囲流れの計測
混相流（日本混相流学会誌）Vol.21, No.2 (2007) pp.185-192

T.G.Hwang, D.H.Doh, T.Kobayashi, K.Tanaka, M.Takei

Analysis of Fluid Elastic-Structure Interactions in an Impinging Jet with Dynamic 3D-PTV and Non-contact 6D Motion Tracking System
Chemical Engineering Journal, Elsevier Vol.130 (2007) pp.153-164

Z.Liu, Y.Zhao, M.Takei

Experimental Study on Axial Wall Heat Conduction for Convective Heat Transfer in Stainless Steel Microtube
Heat and Mass Transfer, Springer Vol.43 (2007) pp.587-594

河府賢治、越智光昭、武居昌宏

圧力損失中間計算法の充填層長さに対する適用性
粉体工学会会誌 Vol.44, No.5 (2007) pp.353-360

河府賢治、越智光昭、武居昌宏

粒子直線率および壁面効果による修正Ergun式の提案
粉体工学会会誌 Vol.44, No.4 (2007) pp.259-266

Z.-G.Liu, S.-Q.Liang, M.Takei

Experimental Study on Forced Convective Heat Transfer Characteristics in Quartz Microtube
International Journal of Thermal Sciences, Elsevier Vol.46 No.2 (2007) pp.64-71

武居昌宏、斎藤兆古、越智光昭

GVSPM法を用いた鉛直管内自由落下粒子濃度分布のECT画像再構成
ECT Images Reconstruction of Freely Falling Particles Concentration Distribution in Vertical Pipe Using GVSPM
日本機械学会論文集B　Transactions of the　Japan　Society of Mechanical Engineers Vol.72-B, No.723 (2006) pp.64-71

K.Tanaka, M.Takei and Y.Saito

Application of Modal Wavelets to PIV Measurements by Selecting Basis Function
Journal of Visualization Vol.9 No.4 (2006) pp.445-455

田中健嗣，吉田美智子，武居昌宏，植村知正，斎藤兆古

モーダルウェーブレット変換を用いたPIV計測結果の解析における最適基底関数の選択
Choice of the Best Base Function for Analysis of PIV with Measurement Results with Modal Wavelet Transform
可視化情報学会論文集 Journal of the Visualization Society of Japan, Vol.26, No.8 (2006) pp.81-88

M.Takei

GVSPM image reconstruction for capacitance CT images of particles in a vertical pipe and comparison with the conventional method
Measurement Science and Technology Vol.17 (2006) pp.2104-2112

田中健嗣, 武居昌宏, 越智光昭

鉛直旋回流搬送装置内の円柱物体の配向性
Orientation of a Cylindrical Material in Vertical Swirling Flow Conveying System
噴流工学(日本ウォータージェット学会誌) Journal of Jet Flow Engineering Vol.23, No.2 (2006) pp.11-16

田中健嗣、佐久間弘、平野裕、武居昌宏

薄膜風袋空気搬送装置の開発
Development of Pneumatic Conveyance System for Thin Rubber Tare
噴流工学(日本ウォータージェット学会誌) Journal of Jet Flow Engineering Vol.23, No.2 (2006) pp.4-10

D.H.Doh, T.G.Hwang, H.J.Jo, Y.B.Pyeon, Y.B.Cho, K.Tanaka and M.Takei

Non-contact 3D Flow-Structure Interaction Measurement (FSIM) System for Motion and Flow Fields -Interactions of a Vertical Cylinder Motion-
Journal of Visualization Vol.9, No.3 (2006) pp.265-274

M.Kimura, M.Takei, Y.Saito and K.Horii

Study On Relationship Between Condensed Particles And Structure Of Condensation Jet Using 2d Image and Discrete Wavelets Multiresolution
International Journal of Wavelets, Multiresolution and Information Processing (IJWMIP), World Scientific Publishing Vol. 4, No. 2 (2006) pp.227-238

M.Takei, M. Ochi, Y. Saito and K.Horii

Extraction of Particle Concentration Distribution from plug flow CT Images Using 3D wavelet multiresolution
International Journal of Wavelets, Multiresolution and Information Processing (IJWMIP), World Scientific Publishing Vol.4, No.2 (2006) pp.239- 251

M. Kimura, M. Takei, Y. Saito and A. Saita

Separation of Condensation Jet Image Using Filter Effect of Wavelets Transform
Journal of Fluid Engineering, ASME Vol.127, No.5 (2005) pp.1047

武居昌宏、斎藤兆古

GVSPM法の固気二相流CT画像再構成への応用
――ランドウェバー法と反復ティコノフ正規化法との比較検討――
Application of GVSPM to Reconstruction of Solid-Air Two-Phase Flow CT Images
――Comparison with Landweber and Iterative Tikhonov Regularization Methods ――
日本機械学会論文集B編, Vol.71, No.703 (2005) pp.745-752

H.Li, M.Takei, Y.Tomita, Y. Saito and K.Horii

Wavelet Multi-Resolution Cross-Correlation Analysis of Swirling Gas-Solid Flow in A Horizontal Pipe
Particulate Science and Technology: An International Journal, Taylor & Francis Vol.22 (2004), No.2, pp.107-118

M. TAKEI and Y. SAITO

Application of the Generalized Vector Sampled Pattern Matching Method to Reconstruction of Electrical Capacitance CT Images
Measurement Science and Technology, Institute of Physics Vol.15 (2004) pp.1-11

M. TAKEI M. OCHI and Y. SAITO

Image Extraction of Particle Concentration at the Plug Front Using 3D Wavelets and Comparison with LDV
Powder Technology, Elsevier Vol. 142(2004) pp.70-78

M. Takei, M. Ochi, Y. Saito and K. Horii

Reconstruction of Free Fall Particle CT Images Using the Generalized Vector Sampled Pattern Matching Method
The Japan Society of Mechanical Engineers (日本機械学会英文論文集) Vol.47, No2(2004)pp.369-377

横山さかり、李和樹、山田高三、武居昌宏、斉藤兆古

画像のベクトル化を用いた加工変質層の深さの定量推定
砥粒加工学会（砥粒加工学会誌）Vol.47, No10(2003)pp.30-33

木村元昭、武居昌宏、斎藤兆古、堀井清之、斎間厚

ウェーブレット多重解像度を用いた凝縮噴流画像の分離
可視化情報学会（可視化情報学会論文集）Vol.23, No.2 (2003) pp.9-16

武居昌宏、李輝、越智光昭、斎藤兆古、堀井清之

キャパシタンス・トモグラフィーと三次元ウェーブレットによる水平管内高濃度固気二相流の特徴抽出
Feature Extraction of Dense Solid Air Two Phase Flow in a Horizontal Pipeline Using Capacitance Tomography and 3D Wavelets
混相流（日本混相流学会誌）Japanese Journal of Multiphase Flow Vol.17, No.1 (2003) pp.29-36

M.Takei, H.Li, M.Ochi, Y.Saito and K.Horii

Image Correlation of Particle Distribution by Discrete Wavelet Transform of Capacitance CT Image
Journal of American Visualization and Fluid Engineering 米国可視化流体工学会学会誌 Vol. 9 , No.4 (2002) pp.271-351

M.Takei, M.Ochi, Y.Saito and K.Horii

Evaluation of Free Fall Particle CT Images Using State Transition Matrix
Particlulate Science and Technology an International Journal, Published by Taylor & Francis Vol. 20, No. 4, pp.341-354(2002)

H.Li Yu.Zhou, M.Takei, Y.Saito and K.Horii

Smart visualization of mulit-scale turlulent structure
International Journal Applied Electromagnetics and Mechnics 日本AEM学会英文誌　IOS Press Vol.15, (2002) pp.393-402

H.Li, M.Takei, Y.Saito and K.Horii

Application of Wavelet Packet Image Compression Technique to Particle Image Velocimetry
International Journal Applied Electromagnetics and Mechnics 日本AEM学会英文誌　IOS Press Vol.15, (2002) pp.383-392

M.Takei, H.Li, M.Ochi, Y.Saito and K.Horii

Feature Extraction of Particle Density in a Pipeline with Tomography and Wavelets
International Journal Applied Electromagnetics and Mechnics 日本AEM学会英文誌　IOS Press Vol.15, (2002) pp.423-430

M.Kimura, M.Takei, C.Ho, Y.Saito and K.,Horii

Visualization of Shear Stress with Micro Imaging Chip and Discrete Wavelets Transform
Journal of fluid engineering, Transactions of the American Society of Mechanical Engineers, (米国機械学会　流体工学雑誌) Vol.124, No.4, pp.1018-1024,2002

武居昌宏、李輝、越智光昭、斎藤兆古、堀井清之

サンプルドパターン・マッチング法による固気二相流CT画像の再構成
可視化情報学会誌 Journal of the visualization society of Japan Vol.22, No.9, pp.71-78

西村浩、越智光昭、武居昌宏、菅谷貴俊

水平管内固気二相流における最小輸送流速 Minimum Transport Velocity of Gas-Solid Two-phase Flow in a Horizontal Pipe
混相流（日本混相流学会誌）Japanese Journal of Multiphase Flow Vol.15 , No.4 (2001) pp.423-431

M.Kimura, M.Takei, K. Vierow, Y.Saito, K.Horii and A.Saima

Fluctuation Component Decomposition of Condensation Jet Image Using Wavelets
Journal of Flow Visualization and Image Processing 米国流体可視化学会学会誌 Vol.8, pp.149-164

武居昌宏　越智光昭　斎藤兆古　堀井清之

離散ウェーブレット自己相関関数によるスパイラルフローの解析
噴流工学(日本ウォータージェット学会誌) Jornal of Jet Flow Engineering Vol.19 No.2 (2002) pp.4-11

武居昌宏、李輝、越智光昭、斎藤兆古、 堀井清之

キャパシタンスCTとウェーブレット多重解像度を用いた管路内固気二相流の特徴抽出
可視化情報学会誌 Journal of the visualization society of Japan Vol.22, No.5 (2002) pp.36-43

木村元昭、武居昌宏、Chih-MingHO、李輝、斎藤兆古、 堀井清之

MEMSせん断応力チップと離散ウェーブレットによる乱流境界層せん断応力の可視化 Visualization of Shear Stress in Turbulence Boundary Layer with MEMS Shear Stress Chip and Discrete Wavelets
可視化情報学会誌 Journal of the visualization society of Japan Vol. 21,No. 4 (2001) pp.71-78

H. Li, M. Takei, Y.Saito and K. Horii

Wavelet Multiresolution Analysis Applied to Coherent Structure Eduction of a Turbulent Jet
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences, Vol.43, No.142, pp.203-207, 2001

M. Takei, H.Li, M. Ochi, Y. Saito and K. Horii

Discrete Wavelets Auto-Correlation of Axial Turbulence Velocity in Spiral Single Phase Flow スパイラル単相流内の軸乱流の離散ウェーブレット自己相関
Powder Technology, Elsevier パウダーテクノロジー誌　エルセビア Vol.112 (2000) pp.289-298

関根太郎、武居昌宏、岡野道治、長江啓泰、斎藤兆古、堀井清之

離散ウェーブレット多重解像度解析によるドライバ精神負担度の可視化 Driver’s Mental Stress Visualization by Discrete Wavelets Multiresolved Analysis
可視化情報学会誌 Journal of the visualization society of Japan, Vol.20 No.79 (2000) pp62-70

木村元昭、武居昌宏、宮城徳誠、Chih-MingHO、斎藤兆古、 堀井清之

マイクロせん断応力計と離散ウェーブレット解析による壁面せん断応力の可視化と探知 Visualization and Detection of Wall Shear Stress using Micro Shear Stress Sensor and Discrete Wavelet Analysis
電気学会論文誌Ｅ Trans. IEE of Japan, Vol.120-E, No.6, (2000) pp.272-279

H..Li, M. Takei, M. Ochi, Y. Saito and K. Horii

Eduction of Unsteady Structure in a Turbulent Jet by using of Continuous and Discrete WaveletTransforms
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences, Vol.42 (2000), No.138.pp.190-195

西村浩、越智光昭、武居昌宏、千代田明

固気二相流におけるベンド管内の最小輸送流速 Minimum transport Velocity of Gas-Solid Two-Phase Flow in a Pipe Bend
日本機械学会論文集, Transactions of the Japan Society of Mechanical Engineers Vol.65-B, No.639 (1999)pp.77-83

H. Li, M.Takei, M.Ochi, Y.Saito and K.Horii

Application of Two-dimensional Orthogonal Wavelets to Multiresolution Image Analysis of aTurbulent Jet
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences, Vol.42 (1999), No.137.pp.120-127

上田寛，武居昌宏，趙耀輝，李輝，越智光昭，富田侑嗣，堀井清之

スパイラルフローを用いた管内壁への低接触化空気輸送 Pneumatic Transportation with Low Touching Pipe Wall Using Spiral Flow
日本航空宇宙学会誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.46, No.534, pp.393-397

武居昌宏，越智光昭，石川泰司，西村浩，高木浩之，高部洋一

プラグ前端構成粒子の挙動についての研究 Movement of Particles Composing Plug at Front End
日本機械学会論文集, Transactions of the Japan Society of Mechanical Engineers Vol.64, No.628-B (1998)pp.86-92

武居昌宏，越智光昭，高部洋一

プラグの自然的な形成段階におけるプラグ臨界長さ Critical Plug Length at Natural Plug Formation
粉体工学会誌 The Society of Powder Technology, Japan Vol.34, No.6, (1997) pp.405-410

越智光昭，武居昌宏

水平管内固気二相流における最小輸送流速 Minimum Transport Velocity of Gas-Solid Two-Phase Flow in a Horizontal Pipe
日本機械学会論文集B編　Transactions of the Japan Society of Mechanical Engineers Vol.62, No.600(1996) pp.70-77

M.Ochi and M.Takei

Flow Characteristics in Horizontal Pneumatic Conveyance at Low Fluid Velocities --3
Advanced Powder Technology アドバンストパウダーテクノロジー誌(粉体工学会英文誌) Vol.6,No.3 (1996) pp.317-324

武居昌宏，堀井清之，橋本文作，片岡勲，伊藤博幸，松前祐司

スパイラルジェットの高安定性に関する研究---軸速度分布と安定性との関係---
High Stability of Spiral Jet ---Relations between Axial Velocity Distribution and Stability
日本航空宇宙学会誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.43, No.494 (1994) pp.129-136

武居昌宏，堀井清之，橋本文作，片岡勲，伊藤博幸，松前祐司

低拡散性スパイラル・ウォータージェットを用いた水中切断 Cutting in Water by Low Diffused Spiral Water Jet
資源と素材（資源・素材学会誌）Vol.111, No.3(1995) pp.162-168

武居昌宏，堀井清之，橋本文作，片岡勲，伊藤博幸，松前祐司

スパイラル・ウォータージェットを用いた軟質物の切削 Cutting of Soft Materials Using of Spiral Water Jet
日本航空宇宙学会誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.42, No.490 (1994) pp.674-685

西川豊，橋本文作，片岡勲，武居昌宏，松前祐司，堀井清之

高濃度埋立建設輸送システムに関する研究 High Density Reclamation Materials Conveyance System
資源と素材（資源・素材学会誌）Journal of the Mining and Materials Processing Institute of Japan Vol.110, No.1(1994) pp.61-66

西川豊，橋本文作，片岡勲，武居昌宏，松前祐司，堀井清之

混気圧送浚渫輸送システムにおける液相スラグの流動現象－液相スラグの生成・成長・崩壊－ Slug Flow Deformation in New Dredged Mud Pneumatic Conveyance
混相流（日本混相流学会誌）Japanese Journal of Multiphase Flow Vol.7, No.4(1993) pp.335-343

西川豊，橋本文作，片岡勲，武居昌宏，松前祐司，堀井清之

混気圧送法を利用した石炭灰輸送システムの圧力損失式 Pressure Loss Expression in Coal Ash Conveyance System Using Pneumatic Conveyance Method
資源と素材（資源・素材学会誌）Journal of the Mining and Materials Processing Institute of Japan Vol.109, No.8 pp.639-644

西川豊，橋本文作，片岡勲，武居昌宏，松前祐司，堀井清之

浚渫泥の混気圧送法における圧力損失に関する研究 Pressure Loss in Dredging Mud Pneumatic Transportation
混相流（日本混相流学会誌）Japanese Journal of Multiphase Flow Vol.7, No.1 (1993), pp.33-40

M.Takei, Y.Matsumae, X.Cheng, B.Hashimoto S.Isago, A.Hashidate and K.Horii

Use of Swirling flow for Wire Passing in a Wire-Cut Electrical Discharge Machine
Theoretical and Applied Mechanics Vol.40(1991), pp.197-203.

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

An Erosion Resistant Pipe Bend
米国機械学会　流体工学雑誌 Journal of Fluids Engineering American Society of Mechanical Engineers Vol. 113 No. 149 (1991) pp.149-151

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

Focusing Phenomenon and Stability of Spiral-Flow Jet
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.33, No.102(1991), pp.141-153.

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

The Rope Passing Method for Repair of Petrochemical Pipelines with Spiral Flow
日本石油学会誌　Journal of The Japan Petroleum Institute Vol.33, No.5(1990), pp.291-298

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

A Study of Spiral Flow (Part 5)---Analysis of Frictional Force Acting on Short Fiber---
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.32, No.98(1990), pp.176-183.

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

A Study of Spiral Flow (Part 4)---The Effect of Radial Reynolds Number of Spiral Flow on Plasma Deposition of Pipe---
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.32, No.98(1990), pp.165-175.

K.Horii, Y.Matsumae, X.Cheng, M.Takei and B.Hashimoto

A Study of Spiral Flow (Part 3)---Opening and Orientation Control of Fiber by Spiral Flow---
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.32, No.98(1990), pp.155-164.

Y.Matsumae, X.Cheng, M.Takei and K.Horii

A Study of Short Fiber Transportation Using a Spiral Flow---Analysis of Force Acting on a Short Fiber---
Theoretical and Applied Mechanics Vol.37(1989), pp.73-79.

K.Horii, Y.Matsumae, X.Cheng and M.Takei

A Study of Spiral Flow (Part2) ---Vortex Phenomena in a Specially Shaped Bend---
日本航空宇宙学会英文誌 Transactions of the Japan Society for Aeronautical and Space Sciences Vol.31, No.92(1988), pp.71-78.