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  1. Artikel ; Online: Hepatobiliary and Pancreatic: Challenges in the diagnosis of hepatic nodules in patients with alcoholic liver cirrhosis.

    Cho, M S / Lee, S K / Kwon, J H / Nam, S W

    Journal of gastroenterology and hepatology

    2023  Band 38, Heft 11, Seite(n) 1867

    Mesh-Begriff(e) Humans ; Liver Cirrhosis, Alcoholic/complications ; Liver Cirrhosis, Alcoholic/diagnosis ; Liver Cirrhosis, Alcoholic/pathology ; Liver Cirrhosis/diagnostic imaging ; Liver Cirrhosis/etiology ; Liver Neoplasms/pathology ; Pancreas ; Liver/pathology
    Sprache Englisch
    Erscheinungsdatum 2023-07-10
    Erscheinungsland Australia
    Dokumenttyp Journal Article ; Review
    ZDB-ID 632882-9
    ISSN 1440-1746 ; 0815-9319
    ISSN (online) 1440-1746
    ISSN 0815-9319
    DOI 10.1111/jgh.16277
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel: Rotational thromboelastometry during Cesarean section as a predictive evaluation for the progression of persistent postpartum hemorrhage in parturients with placenta previa: A prospective observational study.

    Shin, H-J / Nam, S W / Koo, B-W / Kim, J / Hwang, J-W / Do, S-H / Na, H-S

    Heliyon

    2023  Band 9, Heft 2, Seite(n) e13563

    Abstract: Background: The rotational thromboelastogram (ROTEM) has been used in the management of massive bleeding and transfusion strategy. This study investigated ROTEM parameters measured during Cesarean section as predictors for the progression of persistent ... ...

    Abstract Background: The rotational thromboelastogram (ROTEM) has been used in the management of massive bleeding and transfusion strategy. This study investigated ROTEM parameters measured during Cesarean section as predictors for the progression of persistent postpartum hemorrhage (PPH) in parturients with placenta previa.
    Methods: This prospective observational study recruited 100 women scheduled for elective Cesarean section after being diagnosed with placenta previa. Recruited women were divided into two groups according to the amount of estimated blood loss: the PPH group (PPH > 1500 ml) vs. the non-PPH group. ROTEM with laboratory tests was performed three times, preoperative, intraoperative, and postoperative time, which were compared between the two groups.
    Results: The PPH and non-PPH groups included 57 and 41 women, respectively. The area under the receiver-operating characteristic curve of postoperative FIBTEM A5 to detect PPH was 0.76 (95% CI = 0.64 to 0.87; P < 0.001). When postoperative FIBTEM A5 was 9.5, the sensitivity and specificity were 0.74 (95% CI = 0.55 to 0.88) and 0.73 (95% CI = 0.57 to 0.86), respectively. When subgrouping the PPH group based on the postoperative FIBTEM A5 value of 9.5, intraoperative cEBL was similar between the two subgroups; however, postoperative RBC was transfused more in the subgroup with FIBTEM A5 < 9.5 than the subgroup with FIBTEM A5 ≥ 9.5 (7.4 ± 3.0 vs 5.1 ± 2.3 units, respectively; P = 0.003).
    Conclusion: Postoperative FIBTEM A5, with appropriate selection of the cut-off value, can be a biomarker for more prolonged PPH and massive transfusion following Cesarean section by placenta previa.
    Sprache Englisch
    Erscheinungsdatum 2023-02-08
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e13563
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  3. Artikel ; Online: A superconducting nanowire single-photon camera with 400,000 pixels.

    Oripov, B G / Rampini, D S / Allmaras, J / Shaw, M D / Nam, S W / Korzh, B / McCaughan, A N

    Nature

    2023  Band 622, Heft 7984, Seite(n) 730–734

    Abstract: For the past 50 years, superconducting detectors have offered exceptional sensitivity and speed for detecting faint electromagnetic signals in a wide range of applications. These detectors operate at very low temperatures and generate a minimum of excess ...

    Abstract For the past 50 years, superconducting detectors have offered exceptional sensitivity and speed for detecting faint electromagnetic signals in a wide range of applications. These detectors operate at very low temperatures and generate a minimum of excess noise, making them ideal for testing the non-local nature of reality
    Sprache Englisch
    Erscheinungsdatum 2023-10-25
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06550-2
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  4. Artikel ; Online: Rotational thromboelastometry during Cesarean section as a predictive evaluation for the progression of persistent postpartum hemorrhage in parturients with placenta previa: A prospective observational study

    Shin, H.-J. / Nam, S.W. / Koo, B.-W. / Kim, J. / Hwang, J.-W. / Do, S.-H. / Na, H.-S.

    Heliyon. 2023 Feb. 08, p.e13563-

    2023  

    Abstract: The rotational thromboelastogram (ROTEM) has been used in the management of massive bleeding and transfusion strategy. This study investigated ROTEM parameters measured during Cesarean section as predictors for the progression of persistent postpartum ... ...

    Abstract The rotational thromboelastogram (ROTEM) has been used in the management of massive bleeding and transfusion strategy. This study investigated ROTEM parameters measured during Cesarean section as predictors for the progression of persistent postpartum hemorrhage (PPH) in parturients with placenta previa. This prospective observational study recruited 100 women scheduled for elective Cesarean section after being diagnosed with placenta previa. Recruited women were divided into two groups according to the amount of estimated blood loss: the PPH group (PPH > 1500 ml) vs. the non-PPH group. ROTEM with laboratory tests was performed three times, preoperative, intraoperative, and postoperative time, which were compared between the two groups. The PPH and non-PPH groups included 57 and 41 women, respectively. The area under the receiver-operating characteristic curve of postoperative FIBTEM A5 to detect PPH was 0.76 (95% CI = 0.64 to 0.87; P < 0.001). When postoperative FIBTEM A5 was 9.5, the sensitivity and specificity were 0.74 (95% CI = 0.55 to 0.88) and 0.73 (95% CI = 0.57 to 0.86), respectively. When subgrouping the PPH group based on the postoperative FIBTEM A5 value of 9.5, intraoperative cEBL was similar between the two subgroups; however, postoperative RBC was transfused more in the subgroup with FIBTEM A5 < 9.5 than the subgroup with FIBTEM A5 ≥ 9.5 (7.4 ± 3.0 vs 5.1 ± 2.3 units, respectively; P = 0.003). Postoperative FIBTEM A5, with appropriate selection of the cut-off value, can be a biomarker for more prolonged PPH and massive transfusion following Cesarean section by placenta previa.
    Schlagwörter biomarkers ; blood ; cesarean section ; hemorrhage ; observational studies ; placenta ; Placenta previa ; Postpartum hemorrhage ; Rotational thromboelastogram
    Sprache Englisch
    Erscheinungsverlauf 2023-0208
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel ; Online
    Anmerkung Pre-press version ; Use and reproduction
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e13563
    Datenquelle NAL Katalog (AGRICOLA)

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  5. Artikel ; Online: A high-density customizable microwave vacuum feedthrough for cryogenic applications.

    McCaughan, A N / Gammell, J I / Oh, D M / Nam, S W

    The Review of scientific instruments

    2020  Band 91, Heft 1, Seite(n) 15114

    Abstract: We have designed, constructed, and tested an electrical vacuum feedthrough that can carry a large number of microwave signal lines, has high vacuum compatibility, and is highly customizable. We found that it had a leak rate of approximately ... ...

    Abstract We have designed, constructed, and tested an electrical vacuum feedthrough that can carry a large number of microwave signal lines, has high vacuum compatibility, and is highly customizable. We found that it had a leak rate of approximately 10
    Sprache Englisch
    Erscheinungsdatum 2020-02-03
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5133055
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  6. Artikel: Modeling Bloch oscillations in nanoscale Josephson junctions.

    Vora, Heli / Kautz, R L / Nam, S W / Aumentado, J

    Physical review. B

    2017  Band 96, Heft 5

    Abstract: Bloch oscillations in nanoscale Josephson junctions with a Coulomb charging energy comparable to the Josephson coupling energy are explored within the context of a model previously considered by Geigenmüller and Schön that includes Zener tunneling and ... ...

    Abstract Bloch oscillations in nanoscale Josephson junctions with a Coulomb charging energy comparable to the Josephson coupling energy are explored within the context of a model previously considered by Geigenmüller and Schön that includes Zener tunneling and treats quasiparticle tunneling as an explicit shot-noise process. The dynamics of the junction quasicharge are investigated numerically using both Monte Carlo and ensemble approaches to calculate voltage-current characteristics in the presence of microwaves. We examine in detail the origin of harmonic and subharmonic Bloch steps at dc biases
    Sprache Englisch
    Erscheinungsdatum 2017-08-07
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 209770-9
    ISSN 1095-3795 ; 1550-235X ; 2469-9950 ; 1098-0121 ; 0163-1829 ; 0556-2805
    ISSN (online) 1095-3795 ; 1550-235X
    ISSN 2469-9950 ; 1098-0121 ; 0163-1829 ; 0556-2805
    DOI 10.1103/PhysRevB.96.054505
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  7. Artikel: Thermoelectric properties of Ca₂.₈Cu₀.₂Co₄O₉ ceramics fabricated by solution combustion method

    Park, K / Nam, S.W

    Current applied physics. 2011 May, v. 11, no. 3

    2011  

    Abstract: Nano-sized Ca₂.₈Cu₀.₂Co₄O₉ powders were synthesized by the solution combustion process, using five different fuels, i.e., aspartic acid, alanine, glutamic acid, glycine, and urea. The combustion process lowered both the calcination and sintering ... ...

    Abstract Nano-sized Ca₂.₈Cu₀.₂Co₄O₉ powders were synthesized by the solution combustion process, using five different fuels, i.e., aspartic acid, alanine, glutamic acid, glycine, and urea. The combustion process lowered both the calcination and sintering temperatures. The sintered Ca₂.₈Cu₀.₂Co₄O₉ consisted of plate-like grains that were favorable for high energy conversion efficiency. In the comparative study of various different fuels, aspartic acid-processed Ca₂.₈Cu₀.₂Co₄O₉ showed an extremely high Seebeck coefficient, thus resulting in an enhanced power factor. The highest power factor value (8.05 × 10⁻⁴ Wm⁻¹ K⁻²) was attained for the aspartic acid-processed sample at 800 °C.
    Schlagwörter alanine ; aspartic acid ; ceramics ; combustion ; energy conversion ; fuels ; glutamic acid ; powders ; temperature ; urea
    Sprache Englisch
    Erscheinungsverlauf 2011-05
    Umfang p. 939-944.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    ISSN 1567-1739
    DOI 10.1016/j.cap.2010.12.019
    Datenquelle NAL Katalog (AGRICOLA)

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  8. Buch ; Online: PHIDL

    McCaughan, A. N. / Tait, A. M. / Buckley, S. M. / Oh, D. M. / Chiles, J. T. / Shainline, J. M. / Nam, S. W.

    Python CAD layout and geometry creation for nanolithography

    2021  

    Abstract: Computer-aided design (CAD) has become a critical element in the creation of nanopatterned structures and devices. In particular, with the increased adoption of easy-to-learn programming languages like Python there has been a significant rise in the ... ...

    Abstract Computer-aided design (CAD) has become a critical element in the creation of nanopatterned structures and devices. In particular, with the increased adoption of easy-to-learn programming languages like Python there has been a significant rise in the amount of lithographic geometries generated through scripting and programming. However, there are currently unaddressed gaps in usability for open-source CAD tools -- especially those in the GDSII design space -- that prevent wider adoption by scientists and students who might otherwise benefit from scripted design. For example, constructing relations between adjacent geometries is often much more difficult than necessary -- spacing a resonator structure a few micrometers from a readout structure often requires manually-coding the placement arithmetic. While inconveniences like this can be overcome by writing custom functions, they are often significant barriers to entry for new users or those less familiar with programming. To help streamline the design process and reduce barrier to entry for scripting designs, we have developed PHIDL, an open-source GDSII-based CAD tool for Python 2 and 3.
    Schlagwörter Condensed Matter - Superconductivity ; Computer Science - Graphics
    Thema/Rubrik (Code) 005
    Erscheinungsdatum 2021-03-01
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  9. Artikel ; Online: State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector.

    Todaro, S L / Verma, V B / McCormick, K C / Allcock, D T C / Mirin, R P / Wineland, D J / Nam, S W / Wilson, A C / Leibfried, D / Slichter, D H

    Physical review letters

    2021  Band 126, Heft 1, Seite(n) 10501

    Abstract: We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon detector. We determine the hyperfine qubit state of a single ^{9}Be^{+} ion held in a surface-electrode rf ion trap by counting state-dependent ion fluorescence ... ...

    Abstract We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon detector. We determine the hyperfine qubit state of a single ^{9}Be^{+} ion held in a surface-electrode rf ion trap by counting state-dependent ion fluorescence photons with a superconducting nanowire single-photon detector fabricated into the trap structure. The average readout fidelity is 0.9991(1), with a mean readout duration of 46  μs, and is limited by the polarization impurity of the readout laser beam and by off-resonant optical pumping. Because there are no intervening optical elements between the ion and the detector, we can use the ion fluorescence as a self-calibrated photon source to determine the detector quantum efficiency and its dependence on photon incidence angle and polarization.
    Sprache Englisch
    Erscheinungsdatum 2021-01-22
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.010501
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  10. Artikel: Application of a heat balance model to design a fog cooling system for greenhouses

    Nam, S.W / Kim, Y.S

    Acta horticulturae. 2011 Apr., , no. 8931

    2011  

    Abstract: A certain system to overcome high temperature should be introduced for the stable year round cultivation in greenhouses. There are efficient methods to overcome high temperatures in greenhouses such as the ventilation system with shading screen, fan and ... ...

    Abstract A certain system to overcome high temperature should be introduced for the stable year round cultivation in greenhouses. There are efficient methods to overcome high temperatures in greenhouses such as the ventilation system with shading screen, fan and pad cooling system, and fog cooling system. In the evaporative cooled greenhouse, the heat balance of a fog system is different from that of fan and pad system, but there is no design standard for the fog cooling system separately. This study was carried out to find a means to determine the capacity of ventilation and fog cooling systems. Heat balance equations for the fog cooling system were established and verified by experimental results in a greenhouse. The calculated ventilation rates from heat balance equations showed good agreement with the measured ones. The evapotranspiration coefficient (E value) was the most important parameter affecting the required ventilation rate among input parameters, with the exception of weather data. As the E value increased 1%, the required ventilation rate decreased 1.3%. Therefore the data of E value should be given by various experiments and then design standards and selection guidelines should be provided. The simulation results for the same design conditions showed that the required air exchange rate and evaporating water of the fog cooling system were 5.1 to 7.7% and 6.8 to 9.3% less than those of the fan and pad cooling system, respectively.
    Schlagwörter air ; cooling ; cooling systems ; equations ; evaporation ; evapotranspiration ; experimental design ; greenhouses ; guidelines ; heat ; meteorological data ; models ; temperature
    Sprache Englisch
    Umfang p. 251-257.
    Erscheinungsort International Society for Horticultural Science
    Dokumenttyp Artikel
    Anmerkung Paper presented at the International Symposium on High Technology for Greenhouse Systems - GreenSys2009, Volume 1, held June 14-19-2009, Quebec City, Canada.
    ISSN 0567-7572
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