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159 results on '"Tabe M"'

4. Development of muon rotating target at J-PARC/MUSE

Author

Makimura, Shunsuke, Kawamura, N., Onizawa, S., Matsuzawa, Y., Tabe, M., Kobayashi, Y., Shimizu, R., Taniguchi, Y., Fujimori, H., Ikedo, Y., Kadono, R., Koda, A., Kojima, K. M., Nishiyama, K., Nakamura, J., Shimomura, K., Strasser, P., Nakatsugawa, Y., and Miyake, Y.

Published
2015
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8. Comparative study of donor-induced quantum dots in Si nano-channels by single-electron transport characterization and Kelvin probe force microscopy.

Author

Tyszka, K., Moraru, D., Samanta, A., Mizuno, T., Jabłoński, R., and Tabe, M.

Subjects
QUANTUM dots, ELECTRON transport, KELVIN probe force microscopy, SILICON, THOMAS-Fermi approximation, COMPARATIVE studies
Abstract

We comparatively study donor-induced quantum dots in Si nanoscale-channel transistors for a wide range of doping concentration by analysis of single-electron tunneling transport and surface potential measured by Kelvin probe force microscopy (KPFM). By correlating KPFM observations of donor-induced potential landscapes with simulations based on Thomas-Fermi approximation, it is demonstrated that single-electron tunneling transport at lowest gate voltages (for smallest coverage of screening electrons) is governed most frequently by only one dominant quantum dot, regardless of doping concentration. Doping concentration, however, primarily affects the internal structure of the quantum dot. At low concentrations, individual donors form most of the quantum dots, i.e., "donor-atom" quantum dots. In contrast, at high concentrations above metal-insulator transition, closely placed donors instead of individual donors form more complex quantum dots, i.e., "donor-cluster" quantum dots. The potential depth of these "donor-cluster" quantum dots is significantly reduced by increasing gate voltage (increasing coverage of screening electrons), leading to the occurrence of multiple competing quantum dots. [ABSTRACT FROM AUTHOR]

Published
2015
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16. Management of a large tuberculosis contact investigation related to a contaminated bone graft product used in spinal surgery

Author

Marci Drees, Lija Gireesh, Carol Briody, Charlotte Miller, Emily Hanlin, Ruoran Li, William Wilson, Noah Schwartz, Isaac Benowitz, Janet Glowicz, and Tabe Mase

Subjects
Infectious and parasitic diseases, RC109-216, Public aspects of medicine, RA1-1270
Abstract

Background: In March–April 2021, 23 patients at a 906-bed hospital in Delaware had surgical implantation of a bone graft product contaminated with Mycobacterium tuberculosis; 17 patients were rehospitalized for surgical site infections and 6 developed pulmonary tuberculosis. In May 2021, we investigated this tuberculosis outbreak and conducted a large, multidisciplinary, contact investigation among healthcare personnel (HCP) and patients potentially exposed over an extended period in multiple departments. Methods: Exposed HCP were those identified by their managers as present, without the use of airborne precautions, in operating rooms (ORs) during index spine surgeries or subsequent procedures, the postanesthesia care unit (PACU) when patients had draining wounds, inpatient rooms when wound care was performed, and the sterile processing department (SPD) on the days repeated surgeries were performed. We created and assigned an online education module and symptom screening questionnaire to exposed HCP. Employee health services (EHS) instituted a dedicated phlebotomy station to provide interferon-γ release assay (IGRA) testing for HCP at ≥8 weeks after last known exposure. EHS managed all exposed HCP, including nonemployees (eg, private surgeons) via automated e-mail reminders, which were escalated through supervisory chains as needed until follow-up completion. The infection prevention team notified exposed patients, defined as those who shared semiprivate rooms with case patients with transmissible tuberculosis. The Delaware Division of Public Health performed IGRA testing. Results: There were 506 exposed HCP in ORs (n = 100), the PACU (n = 87), inpatient units (n = 140), the SPD (n = 54), and other locations (n = 122); 83% were employed by the health system. Surgical masks and eye protection were routinely used during patient care. All exposed HCP completed screening by December 17, 2021. Furthermore, 2 HCP had positive IGRAs without symptoms or chest radiograph abnormalities, indicating latent tuberculosis infection, but after further review of records and interviews, we discovered that they had previously tested positive and had been treated for latent tuberculosis infection. In addition, 5 exposed patients tested negative and 2 remain pending. Conclusions: This large investigation demonstrated the need for a systematic process that encompassed all exposed HCP including nonemployees and incorporated administrative controls to ensure complete follow-up. We did not identify any conversions related to this outbreak despite high burden of disease in case patients and multiple exposures to contaminated bone-graft material and infectious bodily fluids without respirator use. Transmission risk was likely reduced by baseline surgical mask use and rapid institution of airborne precautions after outbreak recognition.

Published
2022
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33. ChemInform Abstract: Novel Pendant-Type Macrocyclic Bifunctional Chelating Agents: ( Carboxymethyl)amino Derivatives of 2-(4-Nitrobenzyl)-1,4,7,10- tetraazacyclododecane-N,N′,N′′,N′′′-tetraacetic Acid and Their Complex Formation with Yttrium(III).

Author

TAKENOUCHI, K., primary, TABE, M., additional, WATANABE, K., additional, HAZATO, A., additional, KATO, Y., additional, SHIONOYA, M., additional, KOIKE, T., additional, and KIMURA, E., additional

Published
2010
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50. KFM measurements of an ultrathin SOI-FET channel surface.

Author

Jabłoński, Ryszard, Turkowski, Mateusz, Szewczyk, Roman, Ligowski, M., Nuryadi, R., Ichiraku, A., Anwar, M., Jablonski, R., and Tabe, M.

Abstract

In this work, we investigate surface potential of the thin silicon-on-insulator field-effect-transistor (SOI-FET) by Kelvin Probe Force Microscope (KFM) at different temperatures. It will be shown that the surface potential changes in the range of temperatures from 15 K to 100 K, indicating increasing number of ionized dopants. [ABSTRACT FROM AUTHOR]

Published
2007
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