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- 저자 : Sargent, M (검색결과 33 건)
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Sargent, M. T.,Daddi, E.,Bournaud, F.,Onodera, M.,Feruglio, C.,Martig, M.,Gobat, R.,Dannerbauer, H.,Schinnerer, E. IOP Publishing 2015 ASTROPHYSICAL JOURNAL LETTERS - Vol.806 No.1
<P>Gas and dust in star-forming galaxies at the peak epoch of galaxy assembly are presently the topic of intense study, but little is known about the interstellar medium (ISM) of distant, passively evolving galaxies. We report on a deep 3 mm band search with the IRAM/Plateau de Bure Interferometer for molecular (H-2) gas in a massive (M-star similar to 6 x 10(11) M-circle dot) elliptical galaxy at z= 1.4277, the first observation of this kind ever attempted. We place a 3 sigma upper limit of 0.32 Jy kms(-1) on the flux of the CO-(J = 2 -> 1) line or L-CO' < 8.8 x 10(9) Kkms(-1) pc(2), assuming a disk-like CO-morphology and a circular velocity scaling with the stellar velocity dispersion as in local early-type galaxies (ETGs). This translates to an H-2 mass of < 3.9 x 10(10) (alpha(CO)/4.4) M-circle dot or a gas fraction of less than or similar to 6% assuming a Salpeter initial mass function and an ISM dominated by H-2, as observed in many local, high-mass ellipticals. This low value approaches that of local ETGs, suggesting that the low star formation activity in massive, high-z passive galaxies reflects a true dearth of gas and a lesser role for inhibitive mechanisms like morphological quenching.</P>
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Ideologies of Labor and the Consequences of Toil in India’s Construction Industry
Adam Sargent 한국외국어대학교 HK 세미오시스 연구센터 2021 Signs and Society Vol.9 No.3
This article examines the semiotics of labor through an analysis of a construction skill training program in Delhi. It focuses on recurring struggles between students and administrators over the nature and consequences of the activities they engaged in at the training center. Drawing on the notion of language ideology, it argues that students and administrators invoked different ideologies of labor in framing the value and meaning of productive activities. Under different ideological framings, productive action had the potential to transform the subject in radically different but equally unstable ways. While students worried that engaging in “labor work” could transform them into abject laborers, administrators tried to shore up the notion that “practical” would make students into successful workers. More generally, the paper suggests that attending to ideologies of labor can nuance accounts of how labor transforms subjects and social worlds.
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Sarah Sargent 국립민속박물관 2016 International Journal of Intangible Heritage Vol.11 No.-
Tensions remain as to the place that heritage elements with elite European origins should have in intangible cultural heritage. Intangible cultural heritage (ICH) makes a definitive break from understandings about heritage as material, monumental and European. The creation of an ICH regime was meant to counteract bias against non-European elements then occurring in recognition of tangible heritage elements. But whether heritage elements with elite European origins should be accepted as intangible heritage, and on what terms, remains unsettled. Additionally, whether a discourse has emerged that is separate from that of tangible heritage has been the source of a great deal of debate and examination. This article considers the nominations of France and Austria to inscribe their respective heritage elements of classical horsemanship. Classical horsemanship has elite European origins. Through this discussion, there is an examination of the extent to which ICH has established its own counter-narrative, and what the implications of such a narrative will be for heritage generally. This article argues that exclusion of elements from ICH inscription on the basis of elite European origins should not be regarded as a positive development. Instead, this would simply repeat the mistakes of bias, rather than allowing for an evaluation of the heritage element in its own right.
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Jing Xian Quah,Stephanie Sargent,Karen Nel,Christopher M. Anstey,Tony Stanton,Kim Greaves 아시아심장혈관영상의학회 2020 Cardiovascular Imaging Asia Vol.4 No.1
Objective: Epicardial fat (EF) is metabolically active adipose tissue positioned between the epicardial surface of the heart and the pericardium. We investigated whether there is a relationship between EF and Coronary Microvascular Dysfunction (CMD) in patients presenting with chest pain and unobstructed coronary arteries. Materials and Methods: This study recruited patients referred to cardiology clinics for assessment of chest pain who subsequently underwent assessment via CT coronary angiogram (CTA). Myocardial blood flow reserve (MBFR) was assessed using myocardial contrast echocardiography. Epicardial fat volume (EFV) was measured by tracing serial slices on CTA with corresponding Hounsfield units of -195 to -45. Results: We recruited 134 participants with a mean age of 59.2 (9.8) years. CMD was present in 54 (40%) patients, and the measured mean EFV was 128 mm3 (96, 168). Fortythree patients (32%) had a coronary artery calcium score (CACS) of 0, 64 (48%) had a CACS of 1–100, 18 (13%) had a CACS of 101–400, and 9 (7%) had a CACS >400. Univariate regression analysis showed that EFV and MBFR had a correlation coefficient of R=-0.22, with a significant regression slope (β=-0.002, p=0.012). Multivariable linear regression analysis using MBFR as a continuous outcome variable revealed age (β=-0.012, p=0.011) and CACS (β=-0.003, p= 0.023) to be associated with MBFR. EFV was not associated with MBFR (β=-0.0007, p=0.538). Model repetition with MBFR as a dichotomous variable (MBFR ≥2 or <2) revealed no association with EFV. Conclusion: No relationship was found between EFV and MBFR when traditional cardiovascular risk factors and calcium score.
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Radio Selection of the Most Distant Galaxy Clusters
Daddi, E.,Jin, S.,Strazzullo, V.,Sargent, M. T.,Wang, T.,Ferrari, C.,Schinnerer, E.,Smolč,ić,, V.,Calabró,, A.,Coogan, R.,Delhaize, J.,Delvecchio, I.,Elbaz, D.,Gobat, R.,Gu, Q.,Liu, D. American Astronomical Society 2017 ASTROPHYSICAL JOURNAL LETTERS - Vol.846 No.2
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Quasi-2D Ruddlesden-Popper Perovskite Light-Emitters with Br-based Mixed Spacers.
이일금,임주원,전리나,( Edward H. Sargent ),김동하 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
Recently, perovskite LED has been attracting attention as a next-generation LED that can replace existing OLED and QLED. However, methylammonium lead halide (MLH) perovskite is not applicable to LED devices due to its low moisture stability. Quasi-2D perovskites (PEA)<sub>2</sub>(MA)<sub>n-1</sub>PbnBr<sub>3n+1</sub> has been reported to enhance the photoluminescence (PL) and humid-stability compared to conventional MLH 3D perovskite. However, the development of conventional ruddlesden-popper phase perovskites has been only focused on green emission region. In this regard, herein we tried to tailor the emission range of Br-based quasi-2D perovskite from green to blue region by integrating organic cation spacer. As the candidates for spacer, aromatic and aliphatic cations were employed by controlling the relative concentration ratio. As a result, the PL intensities and the emission wavelength showed emissions at blue regions. Based on our new-class of layered perovskites, we demonstrated blue-region LED devices.
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