Effects of Anisotropy in QED3 from Dyson-Schwinger equations in a box

We investigate the effect of anisotropies in the fermion velocities of 2+1 dimensional QED on the critical number N_f^c of fermions for dynamical mass generation. Our framework are the Dyson-Schwinger equations for the gauge boson and fermion propagators formulated in a finite volume. In contrast to previous Dyson-Schwinger studies we do not rely on an expansion in small anisotropies but keep the full velocity dependence of fermion equations intact. As result we find sizable variations of N_f^c away from the isotropic point in agreement with other approaches. We discuss the relevance of our findings for models of high-T_c superconductors.Comment: 9 pages, 7 figures, v2: minor changes, typos corrected, version accepted by PR

Living in exile: daily life and international relations at SWAPO’s Kongwa Camp

From 1964, when it was first granted by the Tanzanian government to OAU recognized liberation movements, Kongwa camp has been a key site in southern Africa’s exile history. First SWAPO and FRELIMO, and later the ANC, MPLA and ZAPU, inhabited neighbouring sites near the town of Kongwa in central Tanzania, where they trained their respective members in guerrilla tactics and prepared to infiltrate their countries of origin. Despite the importance of Kongwa for any history of southern Africa’s liberation struggles, few secondary sources draw attention to Kongwa as a lived space, and none consider it beyond the historiography of a particular national movement. In contrast, this essay highlights the experiences of Namibians living in an international community at Kongwa during the 1960s. Drawing on taped interviews, published memoirs, the ANC’s Morogoro Papers, and Tanzanian historiography and ethnography, it argues that Kongwa shaped a social hierarchy among exiled Namibians determined by their differing abilities to form relationships with non-Namibians around the camp. The essay traces the formation of this hierarchy through histories of how Kongwa camp formed; of how Namibians related to Tanzanian officials, other liberation movement members, and local farmers there; and of how such relationships shaped the form and resolution of conflicts within SWAPO. I emphasize that these histories are obscured by southern Africa’s national historiographies and that they demand a regional approach to exile which attends to the particular sites and kinds of spaces in which exiles lived.Department of HE and Training approved lis

Exercise Training in Children and Adolescents with Cystic Fibrosis: Theory into Practice

Physical activity and exercise training play an important role in the clinical management of patients with cystic fibrosis (CF). Exercise training is more common and recognized as an essential part of rehabilitation programmes and overall CF care. Regular exercise training is associated with improved aerobic and anaerobic capacity, higher pulmonary function, and enhanced airway mucus clearance. Furthermore, patients with higher aerobic fitness have an improved survival. Aerobic and anaerobic training may have different effects, while the combination of both have been reported to be beneficial in CF. However, exercise training remains underutilised and not always incorporated into routine CF management. We provide an update on aerobic and anaerobic responses to exercise and general training recommendations in children and adolescents with CF. We propose that an active lifestyle and exercise training are an efficacious part of regular CF patient management

Exile History: An Ethnography of the SWAPO Camps and the Namibian Nation.

From 1960 to 1989 thousands of Namibians fled South African apartheid rule and traveled into “exile,” a space located outside their country of origin. Most exiles lived in camps administered by the Namibian liberation movement SWAPO in Tanzania, Zambia and Angola. Through the distribution of resources, management of interactions and control of information in these camps, a national hierarchy formed which empowered internationally recognized SWAPO leaders and endangered other camp inhabitants, especially those who were already marked as culturally different. Histories of exile have, in turn, become a medium through which Namibians reproduce, contest and negotiate their position in the hierarchy formed in the camps. It is this relationship between the exile past and present that I call “exile history.” These observations are significant not only for Namibia, but also for other nations and the scholars who study and influence social relations in them. Like SWAPO, liberation movements representing South Africa, Zimbabwe, Angola and Mozambique first governed their citizens in exile camps before becoming the ruling parties of independent countries. Moreover, “exile” and “the camp” highlight paradoxical qualities of national history generally, with its tendency to form outside national borders, insistence on a unity that produces and masks divisions, and capacity to “silence” even as it evokes competing narratives. Such qualities present challenges to the researcher which are best addressed through ethnographic methods. For while national histories tend to be dominated by hierarchies formed in exile, camps and similar spaces, ethnography enables the researcher to cross sites of historical production and elicit new ones. Histories accessed in this way may, in turn, be used to illuminate nationalism's contradictions and create space for other forms of community.Ph.D.Anthropology and HistoryUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/64754/1/chalm_1.pd

UC-335 StewardShip

Steward•Ship is a virtual reality survival game set deep underground on an alien world. The narrative centers around the titular “stewards,” crewmembers on a mining vessel called the AV-Undaunted. These stewards are awoken from cryogenic stasis by the ship after a catastrophic failure causes the spacecraft to crash in a subterranean cave, sealing the vessel and its inhabitants inside. Over the course of the game, the player takes on the role of four individual stewards, each awoken decades or centuries after the previous steward, to continue the work of escaping the alien world they’re stranded on as they slowly uncover the mystery of how they came to be stuck there

EEG sensorimotor correlates of translating sounds into actions

Understanding the actions of others is a necessary foundational cornerstone for effective and affective social interactions. Such understanding may result from a mapping of observed actions as well as heard sounds onto one's own motor representations of those events. To examine the electrophysiological basis of action-related sounds, EEG data were collected in two studies from adults who were exposed to auditory events in one of three categories: action (either hand- or mouth-based sounds), non-action (environmental sounds), and control sounds (scrambled versions of action sounds). In both studies, triplets of sounds of the same category were typically presented, although occasionally, to ensure an attentive state, trials containing a sound from a different category were presented within the triplet and participants were asked to respond to this oddball event either covertly in one study or overtly in another. Additionally, participants in both studies were asked to mimic hand- and mouth-based motor actions associated with the sounds (motor task). Action sounds elicited larger EEG mu rhythm (8–13 Hz) suppression, relative to control sounds, primarily over left hemisphere, while non-action sounds showed larger mu suppression primarily over right hemisphere. Furthermore, hand-based sounds elicited greater mu suppression over the hand area in sensorimotor cortex compared to mouth-based sounds. These patterns of mu suppression across cortical regions to different categories of sounds and to effector-specific sounds suggest differential engagement of a mirroring system in the human brain when processing sounds

Project Reach: Implementation of Evidence-Based Psychotherapy Within Integrated Healthcare for Hurricane Harvey Affected Individuals

Project Reach was established to deliver evidence-based mental healthcare services to children and adults affected by Hurricane Harvey and its aftermath. Through Project Reach, an innovative multi-component assessment and treatment service is utilized to identify and treat in integrated healthcare settings both children and adults exhibiting significant behavioral health concerns in Houston. The aim is to provide sustainable, integrated mental health services through primary care and school-based settings to post-Harvey affected individuals whose emotional needs remain unmet. This paper describes the design and implementation of Project Reach as well as special considerations for implementation. The overall goal of Project Reach is to form a platform for expanding integrated services for those affected by Harvey that will maximize behavioral health outcomes while reducing cost and improving access

Inactivation of rabbit muscle glycogen phosphorylase b by peroxynitrite revisited: does the nitration of Tyr613 in the allosteric inhibition site control enzymatic function?

There is increasing evidence that sequence-specific formation of 3-nitrotyrosine (3-NT) may cause functional changes in target proteins. Recently, the nitration of Tyr residues in glycogen phosphorylase b (Ph-b) was implicated in the age-associated decline of protein function (Sharov et al., Exp. Gerontol. 41, 407–416; 2006); in another report, the nitration of one specific residue, Tyr613, located in the allosteric inhibition site was hypothesized as a rationale for peroxynitrite inactivation (Dairou et al., J. Mol. Biol. 372, 1009–1021; 2007). In the present study, we have optimized the analysis of in-gel Ph-b digests by high performance liquid chromatography-electro spray ionization-tandem mass spectrometry, in order to achieve a quantitative analysis of nitration of individual Tyr residues at a high coverage of Tyr-containing sequences (92%). Our data do not confirm the role of Tyr613 nitration in the control of enzymatic function. Furthermore, we show here that the enzymatic activity of Ph-b does not directly correlate with the protein nitration levels, and that the modification of Cys and, potentially, other amino acid residues can better rationalize Ph-b inactivation by peroxynitrite

Atom gravimeters and gravitational redshift

In a recent paper, H. Mueller, A. Peters and S. Chu [A precision measurement of the gravitational redshift by the interference of matter waves, Nature 463, 926-929 (2010)] argued that atom interferometry experiments published a decade ago did in fact measure the gravitational redshift on the quantum clock operating at the very high Compton frequency associated with the rest mass of the Caesium atom. In the present Communication we show that this interpretation is incorrect.Comment: 2 pages, Brief Communication appeared in Nature (2 September 2010