2,715 research outputs found
Letter from Patrick M. Duignan to Hagan
No full textHolograph letter from Patrick M. Duignan, Summer Hill College Sligo, to Hagan. At the wish of the bishop, enclosing three documents of correspondence between the O'Conor Don, Clonalis, Castlerea, County Roscommon, and Bishop Bernard Coyne, St. Mary's, Sligo: the O'Conor Don recommends his friend Fr. Roche, now of St. John's Church, Brentford, London, for the rectorship at the Irish College. He has good command of Italian (marginal comment 'no Irish!') and is a 'kind zealous and polished priest'. The bishop replies that the present vice-rector �'a distinguished writer and author'- has a prior claim; the O'Conor Don concurs. Duignan offers himself as a potential vice-rector; asking for frank reply. Musing that the bishop's interest in the matter is surprising; he is intolerant of English interference and whole-heartedly supports Hagan
Art, Biography, Sexuality: Patrick Procktor and Keith Vaughan
No full textThis critical review forms a reflection on the research published within the following publications:
Patrick Procktor: Art and Life (Unicorn Press, 2010)
Keith Vaughan: The Mature Oils 1946-1977, (Sansom & Co., 2012)
The research is on two artists, Patrick Procktor (1936-2003), and Keith Vaughan (1912-1977). The monograph on Procktor – previously one of the least documented of the generation of artists who came to prominence in London in the Sixties – positions him in a history of art from which he had been notably absent. The research on Vaughan asserts a new reading of his work, one that is both deeper and more nuanced in its analysis of the ways in which personal experience and sexuality are encoded autobiographically within his work. Crucially, in both artists biography and work are symbiotically linked; the research therefore examines the links between life and art.
Revisionary in intent, the work examines trajectories of experience of gay British (or rather, English) artists in the twentieth century, artists who sought to express themselves and forge careers within the constraints of a heteronormative society, albeit one in which attitudes to sexuality were undergoing change. As gay men, both were constrained by the social mores of their times, and each used painting as a means to affirm personal and sexual identities. A key research interest is in the ways in which sexuality and persona are reflected in critical responses to the artist’s work: in Vaughan, Procktor and other gay male artists of the period. The writing on both Procktor and Vaughan examines the relationship between their personal and professional/artistic lives, framed within a broader socio-political and art historical context. It asserts the place of biography as a means to understand and form new readings of the work. The work adds substantially to the literature and wider discourse on post-war British painting and social history
Postfazione. Utopia e speranza: Bologna per Patrick Zaki
No full textThe essay elaborates on the talk the author delivered during the ceremony that took place after the liberation from prison of the UNIBO and honorary citizen of Bologna, Patrick Zaki. The essay elaborates on the following issues: the support of the university and city, the value of human rights, academic freedom, and public squares as spaces of democracy. It includes a longer part on utopia (as a literary genre and a political instrument of change) and hope, quoting academic scholars (Karl Mannheim, Ernst Bloch, Ursula Le Guin, Antonio Gramsci, Howard Zinn) and it explains the function of hope in utopia
Diurnal fluxes of HONO above a crop rotation
No full textNitrous acid (HONO) fluxes were measured above an agricultural field site near Paris during different seasons. Above bare soil, different crops were measured using the aerodynamic gradient (AG) method. Two LOPAPs (LOng Path Absorption Photometer) were used to determine the HONO gradients between two heights. During daytime mainly positive HONO fluxes were observed, which showed strong correlation with the product of the NO2 concentration and the long wavelength UV light intensity, expressed by the photolysis frequency J(NO2). These results are consistent with HONO formation by photosensitized heterogeneous conversion of NO2 on soil surfaces as observed in recent laboratory studies. An additional influence of the soil temperature on the HONO flux can be explained by the temperature-dependent HONO adsorption on the soil surface. A parameterization of the HONO flux at this location with NO2 concentration, J(NO2), soil temperature and humidity fits reasonably well all flux observations at this location
A nitrate photolysis source of tropospheric HONO is incompatible with current understanding of atmospheric chemistry
No full textRecent observations of nitrous acid (HONO) in the remote troposphere show much higher concentrations than can be explained through known sources, with important implications for air quality and climate. Laboratory evidence and modelling of field observations suggests that nitrate aerosol photolysis is the likely mechanism providing the additional HONO, offering a rapid route for recycling of NOx from nitric acid (HNO3). Previous studies of the global impact of this chemistry have used either very restricted HONO data or a “top-down” approach to parameterize the HONO source by reconciling simulated and observed NOx concentrations. Here, we use multiple, independent tropospheric HONO observations from different locations to parameterize nitrate photolysis, and evaluate its impacts on global atmospheric chemistry using GEOS-Chem. The simulations improve agreement between modelled and observed HONO concentrations relative to previous studies, decreasing the model bias by 5 %–20 %. The remaining (and large) underestimate of HONO in the model is due predominantly to an underestimate of total nitrate aerosol (−95 %) and is reduced to 20 % when accounting for low model nitrate. Despite the low bias in the model HONO, we find that nitrate aerosol photolysis leads to substantial global increases in NOx, O3 and OH concentrations, likely beyond the observational constraints. The additional source of NOx (∼ 48 Tg N yr−1 globally) is comparable to total NOx emissions from all sources (∼ 55 Tg yr−1). These HONO observations in the remote troposphere, thus imply a large uncertainty in the NOx budget and an incomplete understanding of atmospheric chemistry. Improved techniques to measure HONO at the low concentrations typical of remote areas, coupled with more measurements in these areas and improved process level understanding of nitrate photolysis are needed to provide quantitative assessment of its potentially global-scale atmospheric impacts
An Atmospheric Constraint on the NO<sub>2</sub> Dependence of Daytime Near-Surface Nitrous Acid (HONO)
No full textRecent observations suggest a large and unknown daytime source of nitrous acid (HONO) to the atmosphere. Multiple mechanisms have been proposed, many of which involve chemistry that reduces nitrogen dioxide (NO2) on some time scale. To examine the NO2 dependence of the daytime HONO source, we compare weekday and weekend measurements of NO2 and HONO in two U.S. cities. We find that daytime HONO does not increase proportionally to increases in same-day NO2, i.e., the local NO2 concentration at that time and several hours earlier. We discuss various published HONO formation pathways in the context of this constraint.</p
M. Patrick Graham & Steven L. McKenzie (ed.), The Chronicler as Author. Studies in Text and Texture, Sheffield, Sheffield Academic Press, 1999, (Journal for the Study of the Old Testament, Supplement Series, 263), ISBN 1-84127-057-1
No full textRobert Philippe de. M. Patrick Graham & Steven L. McKenzie (ed.), The Chronicler as Author. Studies in Text and Texture, Sheffield, Sheffield Academic Press, 1999, (Journal for the Study of the Old Testament, Supplement Series, 263), ISBN 1-84127-057-1. In: Revue d'histoire et de philosophie religieuses, 80e année n°2, Avril-juin 2000. p. 297
An Atmospheric Constraint on the NO<sub>2</sub> Dependence of Daytime Near-Surface Nitrous Acid (HONO)
No full textRecent observations suggest a large
and unknown daytime source
of nitrous acid (HONO) to the atmosphere. Multiple mechanisms have
been proposed, many of which involve chemistry that reduces nitrogen
dioxide (NO<sub>2</sub>) on some time scale. To examine the NO<sub>2</sub> dependence of the daytime HONO source, we compare weekday
and weekend measurements of NO<sub>2</sub> and HONO in two U.S. cities.
We find that daytime HONO does not increase proportionally to increases
in same-day NO<sub>2</sub>, i.e., the local NO<sub>2</sub> concentration
at that time and several hours earlier. We discuss various published
HONO formation pathways in the context of this constraint
Comparison of airborne measurements of NO, NO₂, HONO, NOᵧ and CO during FIREX-AQ
No full textIlann Bourgeois, Jeff Peischl, J. Andrew Neuman, Steven S. Brown, Hannah M. Allen, Pedro Campuzano-Jost, Matthew M. Coggon, Joshua P. DiGangi, Glenn S. Diskin, Jessica B. Gilman, Georgios I. Gkatzelis, a, Hongyu Guo, Hannah A. Halliday, b, Thomas F. Hanisco, Christopher D. Holmes, L. Gregory Huey, Jose L. Jimenez, Aaron D. Lamplugh, Young Ro Lee, Jakob Lindaas, Richard H. Moore, John B. Nowak, Demetrios Pagonis, c, Pamela S. Rickly, Michael A. Robinson, , Andrew W. Rollins, Vanessa Selimovic, Jason M. St. Clair, David Tanner, Krystal T. Vasquez, Patrick R. Veres, Carsten Warneke, Paul O. Wennberg, , Rebecca A. Washenfelder, Elizabeth B. Wiggins, Caroline C. Womack, Lu Xu, d, Kyle J. Zarzana, e and Thomas B. Ryerson, fWe present a comparison of fast-response instruments installed onboard the NASA DC-8 aircraft that measured nitrogen oxides (NO and NO₂), nitrous acid (HONO), total reactive odd nitrogen (measured both as the total (NOᵧ) and from the sum of individually measured species (ΣNOᵧ)) and carbon monoxide (CO) in the troposphere during the 2019 Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) campaign. By targeting smoke from summertime wildfires, prescribed fires and agricultural burns across the continental United States, FIREX-AQ provided a unique opportunity to investigate measurement accuracy in concentrated plumes where hundreds of species coexist. Here, we compare NO measurements by chemiluminescence (CL) and laser induced fluorescence (LIF); NO₂ measurements by CL, LIF and cavity enhanced spectroscopy (CES); HONO measurements by CES and iodide-adduct chemical ionization mass spectrometry (CIMS); and CO measurements by tunable diode laser absorption spectrometry (TDLAS) and integrated cavity output spectroscopy (ICOS). Additionally, total NOᵧ measurements using the CL instrument were compared with ΣNOᵧ (= NO + NO₂ + HONO + nitric acid (HNO₃) + acyl peroxy nitrates (APNs) + submicron particulate nitrate (pNO₃)). Other NOy species were not included in ΣNOy as they either contributed minimally to it (e.g., C₁–C₅ alkyl nitrates, nitryl chloride (ClNO₂), dinitrogen pentoxide (N₂O₅)) or were not measured during FIREX-AQ (e.g., higher oxidized alkyl nitrates, nitrate (NO₃), non-acyl peroxynitrates, coarse-mode aerosol nitrate). The aircraft instrument intercomparisons demonstrate the following: 1) NO measurements by CL and LIF agreed well within instrument uncertainties, but with potentially reduced time response for the CL instrument; 2) NO₂ measurements by LIF and CES agreed well within instrument uncertainties, but CL NO₂ was on average 10 % higher; 3) CES and CIMS HONO measurements were highly correlated in each fire plume transect, but the correlation slope of CES vs. CIMS for all 1 Hz data during FIREX-AQ was 1.8, which we attribute to a reduction in the CIMS sensitivity to HONO in high temperature environments; 4) NOᵧ budget closure was demonstrated for all flights within the combined instrument uncertainties of 25 %. However, we used a fluid dynamic flow model to estimate that average pNO₃ sampling fraction through the NOᵧ inlet in smoke was variable from one flight to another and ranged between 0.36 and 0.99, meaning that approximately 0–24 % on average of the total measured NOᵧ in smoke may have been unaccounted for and may be due to unmeasured species such as organic nitrates; 5) CO measurements by ICOS and TDLAS agreed well within combined instrument uncertainties, but with a systematic offset that averaged 2.87 ppbv; and 6) integrating smoke plumes followed by fitting the integrated values of each plume improved the correlation between independent measurements.We would like to thank the NOAA/NASA FIREX-AQ science and aircraft operation teams. We acknowledge Armin Whistaler, Felix Piel, and Laura Tomsche for providing the NH₃ measurements from FIREX-AQ. We thank Ann Middlebrook for helpful discussion regarding pNO₃ sampling in the NOᵧ inlet and AMS performance.
This research has been supported by the National Oceanic and Atmospheric Administration (grant nos. NA17OAR4320101, NA16OAR4310100, and NA17OAR4310004) and the National Aeronautics and Space Administration (grant nos. 80NSSC18K0660 and 80NSSC18K0630).https://amt.copernicus.org/articles/15/4901/2022
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
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