90 research outputs found
Magnetic resonance imaging (MRI) contrast agents for tumor diagnosis
10.1260/2040-2295.4.1.23Journal of Healthcare Engineering4123-4
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Publics otherwise : the poetics of exclusion facing Roma communities in illiberal Hungary
This dissertation is an ethnographic study of the exclusion of Roma in northeastern Hungary and its social impacts on Roma communities. Based on 21 months of fieldwork in the region, I argue that pharrajimos—a Romani word meaning “fragmentation” or “cutting up” also used to name the Roma Holocaust—shapes how Roma communities in Hungary experience exclusion, evictability, and deportability through what I call neo-pharrajimos, or new, material, and affective forms of anti-Roma ideology that recur into the present. The entangled poetics of evictability and deportability facing Roma endure as racialized chronotopes that are disappeared through the fragmenting impacts of anti-Roma racism structuring Hungarian illiberalism, but have real material impacts including homelessness and loss of public benefits. Ethnographically engaging with various interactional and narrative genres of neo-pharrajimos, this work points to the ways in which Roma collectively and personally conduct themselves otherwise by moving away from direct forms of confrontation in response to the slow liquidation of publics in which Roma can be heard, in which their voices are audible. Methodologically I track this process and its implications for the possibility of addressing social inequalities through analyses of (1) a speech performed by a Roma activist during a demonstration in solidarity with refugees arriving at Hungary’s southern border in the summer of 2015, (2) slogans imprinted on large banners used by activists protesting a discriminatory housing decree disproportionately affecting Roma community members, and (3) narratives as related by former Roma refugee claimants whose refugee claims were rejected in Canada forcing them to return to Hungary. Analyses of the racialized erasures and removals taking place in ordinary life in post-socialist, illiberal Hungary reveal a deep inability to reckon with its own past as it articulates its relationship with the shared values of the European Union.Anthropolog
Crystal structure end electron spin echo modulation (ESEEM) study of [Cu(II)(TEPA)NO2]PF6Crystal structure end electron spin echo modulation (ESEEM) study of [Cu(II)(TEPA)NO2]PF6 (TEPA)=Tris[2-(2-pyridyl)ethyl]amine): A model for the purported structure of the nitrite derivative of hemocyanin (TEPA)=Tris[2-(2-pyridyl)ethyl]amine): A model for the purported structure of the nitrite derivative of hemocyanin
The coordination properties of nitrite ion (NO2-) with copper are relevant to investigations of a variety of copper proteins, including those involved in nitrogen oxide processing. Here, we use X-ray diffraction and electron spin echo envelope modulation (ESEEM) spectroscopy to investigate the coordination and electronic structure of a nitrite-copper(II) model compound, [Cu(II)(TEPA)NO2]PF6 (TEPA = tris[2-(2-pyridyl)ethyl]amine). In the crystal (C21H24N5CuO2PF6 crystallizes in the monoclinic space group P2(1)/c with Z = 4, a = 11.817(8) angstrom, b = 13.124(6) angstrom, c = 15.692(7) angstrom, and beta = 92.39(4)-degrees), nitrite is shown to bind as an equatorial ligand to Cu(II) through oxygen, rather than nitrogen. In frozen solution, the detection of ESEEM from the nitrite N-14 indicates O-ligation as well. The quadrupole and electron-nuclear coupling tensors for the nitrite N-14 are obtained by field-dependent ESEEM spectral simulation. The quadrupole parameters, e2qQ = 5.66 MHz and eta = 0.31, are similar to those for diamagnetic metal nitrites. The net charge on the nitrite nitrogen calculated from the quadrupole parameters, based on Townes-Dailey theory, suggests that the ONO angle of bound nitrite is between 111-degrees and 116-degrees in frozen solution, as compared to 115-degrees in the crystal. The principal directions of the quadrupole tensor and the electron-nuclear coupling tensor relative to that of the g tensor suggest that the ONO orientation relative to the Cu(II)(TEPA) structure in frozen solution is essentially the same as that in the crystal. The ability to observe modulations arising from Cu(II)-coordinated (NO2-)-N-14 allows us to probe for an equatorial nitrito ligand to Cu(II) in solution samples. An attempt was made to substantiate the claim that nitrite binds equatorially through oxygen to Cu(II) in hemocyanin after nitrite treatment (Solomon, E. I. In Copper Proteins; Spiro, T. G., Ed.; Wiley-Interscience: New York, 1981; pp 43-108) by searching for (NO2-)-N-14 modulations in the ESEEM spectrum. None were found, suggesting that nitrite does not coordinate to the Cu(II) of hemocyanin as claimed
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