Search Results - "Hozumi, Naohiro"

Three-dimensional acoustic impedance mapping of cultured biological cells by Hozumi, Naohiro, Yoshida, Sachiko, Kobayashi, Kazuto

“…•The cultured glial cell was observed by high-frequency ultrasound.•Reflection was interpreted into characteristic acoustic impedance along the…”
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Space Charge Measurement of 23-mm-Thick XLPE Cable at Ambient and High Temperatures by Morita, Shosuke, Fuse, Norikazu, Takahashi, Toshihiro, Takahashi, Tsuguhiro, Zahra, Shafira, Hozumi, Naohiro

“…Space charge measurement was performed on a 23-mm-thick cross-linked polyethylene (XLPE) cable at ambient and high temperatures using a newly developed…”
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Basic study on calibration using waveform variation in space charge measurement by pulsed electroacoustic method by Li, Xiaoxin, Kawashima, Tomohiro, Murakami, Yoshinobu, Hozumi, Naohiro

“…The pulsed electroacoustic method determines the distribution of space charge in an insulation system by applying a pulse voltage and detecting the acoustic…”
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Estimation Accuracy of the Electric Field in Cable Insulation Based on Space Charge Measurement by Fuse, Norikazu, Morita, Shosuke, Miyazaki, Satoru, Takahashi, Toshihiro, Hozumi, Naohiro

“…Space charge measurement accuracy is crucial when assessing the suitability of cables for high-voltage direct current (DC) systems. This study assembled…”
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Suppression of reflected signals from substrate as clutters for cell measurements using acoustic impedance microscopy by Nagaoka, Ryo, Hasegawa, Hideyuki, Tamura, Kazuki, Yoshida, Sachiko, Hozumi, Naohiro, Kobayashi, Kazuto

“…•Singular value decomposition filter extracted the desired signals.•Reflected signals from substrate were suppressed using the proposed method.•The proposed…”
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Fundamental study for assessment of surface resistivity based on waveform characteristics of partial discharge by Kawashima, Tomohiro, Hirukawa, Taisuke, Yoshikawa, Kanta, Murakami, Yoshinobu, Hozumi, Naohiro

“…The partial discharge (PD) waveform reflects the evolution process of electron avalanche in the discharge space. The authors expect to estimate the condition…”
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Evaluation of elastic change during the mitotic phase of murine breast cancer cells using scanning acoustic microscopy by Soon, Thomas Tiong Kwong, Sasaki, Ruka, Prastika, Edo Bagus, Kawaguchi, Yuki, Kobayashi, Kazuto, Hozumi, Naohiro, Yoshida, Sachiko

“…Abstract Scanning acoustic microscopy (SAM) is a useful observational tool in cellular study as non-invasive living observation is feasible, unlike in…”
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Time and frequency domain deconvolution for cross-sectional cultured cell observation using an acoustic impedance microscope by Bagus Prastika, Edo, Shintani, Taichi, Kawashima, Tomohiro, Murakami, Yoshinobu, Hozumi, Naohiro, Tiong Kwong Soon, Thomas, Yoshida, Sachiko, Nagaoka, Ryo, Kobayashi, Kazuto

“…•A method of deconvolution in the time and frequency domain is proposed.•The cell reflection coefficient was assessed using the target and reference…”
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Nondestructive fault localization of IC interconnection by using ultrasonic heating by Matsui, Takuto, Hozumi, Naohiro, Otaka, Akihiro, Matsumoto, Toru

“…A nondestructive method of ultrasonic fault localization of IC interconnection without mold decapsulation was proposed instead of the optical-beam-induced…”
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Three-dimensional acoustic impedance mapping of human skin by improved time–frequency domain analysis by Prastika, Edo Bagus, Imori, Atsushi, Kawashima, Tomohiro, Murakami, Yoshinobu, Hozumi, Naohiro, Yoshida, Sachiko, Nagaoka, Ryo, Kobayashi, Kazuto

“…Abstract Three-dimensional acoustic impedance microscopy was proposed for human cheek skin observation. A focused ultrasound wave was transmitted through a…”
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DC conduction and electrical breakdown of MgO/LDPE nanocomposite by Murakami, Y., Nemoto, M., Okuzumi, S., Masuda, S., Nagao, M., Hozumi, N., Sekiguchi, Y.

“…To understand basic electric properties of nano-sized magnesium oxide (MgO) / low-density polyethylene (LDPE) nanocomposite under DC voltage application, the…”
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Numerical analysis of ultrasound propagation and reflection intensity for biological acoustic impedance microscope by Gunawan, Agus Indra, Hozumi, Naohiro, Yoshida, Sachiko, Saijo, Yoshifumi, Kobayashi, Kazuto, Yamamoto, Seiji

“…•Acoustic impedance microscope for biological tissue was proposed.•Calibration curve was obtained from acoustic field analysis.•The calibration curve was…”
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Acoustic impedance interpretation of cross-sectional human skin by using time and frequency domain deconvolution by Prastika, Edo Bagus, Imori, Atsushi, Kawashima, Tomohiro, Murakami, Yoshinobu, Hozumi, Naohiro, Yoshida, Sachiko, Nagaoka, Ryo, Kobayashi, Kazuto

“…In the human cheek skin assessment using an ultrasound microscope, deconvolution is the process to estimate the reflection coefficient that comes only from the…”
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Reaction assessment of cultured breast cancer cells exposed to anticancer agents using microscale acoustic impedance profile by Rahayu, Rahma Hutami, Takanashi, Kyoichi, Soon, Thomas Tiong Kwong, Seviaryna, Inna, Maev, Roman, Kobayashi, Kazuto, Hozumi, Naohiro, Yoshida, Sachiko

“…The mechanical properties of living cells are known to be associated with disease states and cell function. In this study, acoustic impedance microscopy using…”
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Ultrasonic beam induced resistance change (SOBIRCH) method for failure analysis of semiconductor devices encapsulated by mold resin by Matsui, Takuto, Tatsumi, Kosuke, Kawashima, Tomohiro, Murakami, Yoshinobu, Hozumi, Naohiro, Eura, Sigeru, Matsumoto, Toru

“…In the process of the failure analysis for semiconductor devices, various optical methods are applied as techniques to localize faults of the semiconductor…”
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Development of Thermal Conductive tpPI/Oriented h‐BN Insulating Composite Material Using the Electrostatic Adsorption Method by Murakami, Yoshinobu, Hamasaki, Norikazu, Kikuike, Akio, Kawashima, Tomohiro, Hozumi, Naohiro

“…A thermal conductive plate in a device like a power module for an automobile requires materials with high thermal conductivity, acceptable electric breakdown…”
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Basic electrical characteristics of epoxy/hollow silica composites influenced by addition of hollow silica by Murakami, Yoshinobu, Matsubara, Takayuki, Kawashima, Tomohiro, Hozumi, Naohiro

“…Polymeric insulating materials like an epoxy resin due to their excellent electric performance and a maintenance performance are commonly applied to various…”
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Effects of anticancer drugs on glia-glioma brain tumor model characterized by acoustic impedance microscopy by Soon, Thomas Tiong Kwong, Chean, Tan Wei, Yamada, Hikari, Takahashi, Kenta, Hozumi, Naohiro, Kobayashi, Kazuto, Yoshida, Sachiko

“…An ultrasonic microscope is a useful tool for observing living tissue without chemical fixation or histochemical processing. Two-dimensional (2D) acoustic…”
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Quantitative evaluation method for differentiation of C2C12 myoblasts by ultrasonic microscopy by Takanashi, Kyoichi, Washiya, Mamoru, Ota, Kazuki, Yoshida, Sachiko, Hozumi, Naohiro, Kobayashi, Kazuto

“…Cell differentiation was evaluated by ultrasonic microscopy. However, there were some regions that showed a lower acoustic impedance than the culture liquid…”
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Mutual conversion between B-mode image and acoustic impedance image by Chean, Tan Wei, Hozumi, Naohiro, Yoshida, Sachiko, Kobayashi, Kazuto, Ogura, Yuki

“…To study the acoustic properties of a B-mode image, two ways of analysis methods were proposed in this report. The first method is the conversion of an…”
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