PAH emission from Nova Cen 1986

The discovery of broad emission features between 3.2 and 3.6 microns were reported in the spectrum of Nova Cen 1986 (V842 Cen) some 300 days following outburst and remaining prominent for several months. The general characteristics of these features are similar to those attributed to polycyclic hydrocarbon (PAH) molecules in other dusty sources, although the relative strengths are different, and these observations provide the first clear evidence for molecular constituents other than graphite particles in the ejecta of novae

Khipus, khipu boards and sacred texts : toward a philology of Andean knotted cords

This research was funded by the National Geographic Society, the Leverhulme Trust, the John Simon Guggenheim Foundation, and the University of St. Andrews.Although the knotted cord texts known as khipus have been created in the Andes for over a millennium (ca. AD 950–1950), their historical philology has been little understood. This study, based on original archival and ethnographic research, analyzes hybrid khipu/alphabetic texts known as “khipu boards,” examining their development in colonial Peru, and their role in twentieth-century Andean rituals. Particular attention is paid to a previously unknown sacred manuscript, the Entablo, from the community of San Pedro de Casta, Peru, which describes how villagers used khipu boards in their annual religious ceremonies until the 1950s. This study reveals new insights into the social and symbolic nature of post-Inka khipus as texts, particularly with reference to gender, place, and knowledge.Publisher PDFPeer reviewe

Lucy Menzies (1882 to 1954) and the Christian ideal of sanctity in medieval Scotland

Lucy Menzies was a close friend and disciple of the spiritual writer and scholar Evelyn Underhill, and an important spiritual writer in her own right. this is the first article to give an overview of Lucy's writing, and an analysis of her spiritual-biographical treatments of the tow most important medieval saints of her native Scotland, St Columba and St Margaret.PostprintPeer reviewe

'She has received many honours': identity in article bio statements

In contrast to the prescribed anonymity of the research article, the bio which accompanies it is perhaps the most explicit assertion of self-representation in scholarly life. Here is a rhetorical space where, in 50-100 words, authors are able to craft a narrative of expertise for themselves. It is a key opening for academics, both novice and experienced, to manage a public image through the careful recounting of achievement. Yet despite the current interest in identity, the bio has largely escaped attention. In this paper we address this neglect through analysis of 600 bios across three disciplines, exploring the importance of discipline, status and gender in mediating the ways writers claim an identity. Our argument is that, despite its brevity, the bio is an important means of representing an academic self through the recognition of collective values and membership. © 2012 Elsevier Ltd.postprin

Trions in a periodic potential

The group-theoretical classification of trion states is presented. It is based on considerations of products of irreducible representations of the 2D translation group. For a given BvK period N degeneracy of obtained states is N^2. Trions consist of two identical particles so the symmetrization of states with respect to particles transposition is considered. Completely antisymmetric states can be constructed by introducing antisymmetric spin functions. Two symmetry adapted bases are considered. The third possibility is postponed for the further investigations.Comment: revtex, 5 p., sub. to Physica

Adaptive neural control for MACE II

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76789/1/AIAA-1999-4588-533.pd

Stochastic-based adaptive control vibration control for MACE II

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76388/1/AIAA-2001-4644-483.pd

A Gut Feeling about GABA: Focus on GABAB Receptors

γ-Aminobutyric acid (GABA) is the main inhibitory neurotransmitter in the body and hence GABA-mediated neurotransmission regulates many physiological functions, including those in the gastrointestinal (GI) tract. GABA is located throughout the GI tract and is found in enteric nerves as well as in endocrine-like cells, implicating GABA as both a neurotransmitter and an endocrine mediator influencing GI function. GABA mediates its effects via GABA receptors which are either ionotropic GABAA or metabotropic GABAB. The latter which respond to the agonist baclofen have been least characterized, however accumulating data suggest that they play a key role in GI function in health and disease. Like GABA, GABAB receptors have been detected throughout the gut of several species in the enteric nervous system, muscle, epithelial layers as well as on endocrine-like cells. Such widespread distribution of this metabotropic GABA receptor is consistent with its significant modulatory role over intestinal motility, gastric emptying, gastric acid secretion, transient lower esophageal sphincter relaxation and visceral sensation of painful colonic stimuli. More intriguing findings, the mechanisms underlying which have yet to be determined, suggest GABAB receptors inhibit GI carcinogenesis and tumor growth. Therefore, the diversity of GI functions regulated by GABAB receptors makes it a potentially useful target in the treatment of several GI disorders. In light of the development of novel compounds such as peripherally acting GABAB receptor agonists, positive allosteric modulators of the GABAB receptor and GABA producing enteric bacteria, we review and summarize current knowledge on the function of GABAB receptors within the GI tract

Far-infrared observations of young clusters embedded in the R Coronae Austrinae and RHO Ophiuchi dark clouds

Multicolor far infrared maps in two nearby dark clouds, R Coronae Austrinae and rho Ophiuchi, were made in order to investigate the individual contribution of low mass stars to the energetics and dynamics of the surrounding gas and dust. Emission from cool dust associated with five low mass stars in Cr A and four in rho Oph was detected; their far infrared luminosities range from 2 far infrared luminosities L. up to 40 far infrared luminosities. When an estimate of the bolometric luminosity was possible, it was found that typically more than 50% of the star's energy was radiated longward of 20 micrometers. meaningful limits to the far infrared luminosities of an additional eleven association members in Cr A and two in rho Oph were also obtained. The dust optical depth surrounding the star R Cr A appears to be asymmetric and may control the dynamics of the surrounding molecular gas. The implications of the results for the cloud energetics and star formation efficiency in these two clouds are discussed

A Bifactorial Solution to the Psychopathy Checklist: Screening Version in a Sample of Civil Psychiatric Patients

Background There is considerable debate about the underlying factor structure of the Psychopathy Checklist: Screening Version (PCL: SV). An established view is that it reflects a unitary construct underpinned by two correlated factors. More recent research has, however, undermined this conceptualisation. Aims Our aim was to compare 10 competing models of the PCL: SV in a sample of civil psychiatric patients. Method Ten distinct factor models were specified and tested using conventional confirmatory factor analytic techniques, along with confirmatory bifactor modelling. Results A bifactor model, including two general factors (interpersonal–affective and antisocial–lifestyle), and four subordinate factors (interpersonal, affective, antisocial and lifestyle) provided the best fit to the data. The reliability of the conceptualisation was supported through the use of composite reliability, and the differential relationships exhibited between the general factors and measures of personality, impulsivity and mental health. Conclusions Our findings provide further weight to taking the two general psychopathy factors into account when interpreting the PCL: SV for clinical purposes