A Search for Interstellar CH2_2D+^+

We report on a search for Interstellar CH2D+. Four transitions occur in easily accessible portions of the spectrum; we report on emission at the frequencies of these transitions toward high column density star-forming regions. While the observations can be interpreted as being consistent with a detection of the molecule, further observations will be needed to secure that identification. The CH2D+ rotational spectrum has not been measured to high accuracy. Lines are weak, as the dipole moment induced by the inclusion of deuterium in the molecule is small. Astronomical detection is favored by observations toward strongly deuterium-fractionated sources. However, enhanced deuteration is expected to be most significant at low temperatures. The sparseness of the available spectrum and the low excitation in regions of high fractionation make secure identification of CH2D+ difficult. Nonetheless, owing to the importance of CH3+ to interstellar chemistry, and the lack of rotational transitions of that molecule owing to its planar symmetric structure, a measure of its abundance would provide key data to astrochemical models.Comment: 2 pages, 1 figure, submitted to IAU Symposium 251, Organic Matte

Myocardial contrast echocardiography for the assessment of coronary blood flow reserve: Validation in humans

AbstractObjectives. The aim of this study was to validate the use of myocardial contrast echocardiography to determine coronary blood flow reserve in humans.Background. Although myocardial contrast echocardiogrephy has been used to accurately quantify coronary flow reserve in animals, validation for its use in humans to measure flow reserve is lacking.Methods. We analyzed the time-intensity curve from the anteroseptal region of the left ventricular short axis produced after a left main coronary artery injection of sonicated albumin before and after intracoronary administration of papaverine in 16 patients without angiographically significant coronary artery disease. The ratio of half-time of video intensity disappearance from peak intensity, variable of curve width, area under the timeintensity curve and corrected peak contrast intensity after papaverine compared with baseline were correlated with coronary flow reserve measured simultaneously with an intracoronary Doppler probe in the left anterior descending coronary artery.Results. There was a strong inverse correlation with half-time of contrast washout and coronary flow reserve (r = −0.76, p = 0.0007) and a strong positive correlation between the variable of curve width (which is inversely proportional to curve width) and coronary flow reserve (r = 0.71, p = O.002). There was a weak but significant inverse correlation between area under the timeintensity curve and coronary flow reserve (r = −0.54, p = 0.03) but no correlation between corrected peak contrast inteasity and coronary flow reserve (r = −036, p = NS), Despite the strong correlation for the ratios for half-time of contrast washout and variable of curve width and actual coronary flow reserve measured with intracoronary Doppler probe, the transit time ratios consistently underestimated coronary flow reserve.Conclusions. Myocardial contrast echocardiography performed with left main coronary artery injections of sonicated albumin can be utilized to measure coronary flow reserve in humans. Transit time variable ratios (half-time of contrast washout and variable of curve width) derived from the time-intensity curve correlate most strongly with coronary flow reserve

Garotas de loja, história social e teoria social [Shop Girls, Social History and Social Theory]

Shop workers, most of them women, have made up a significant proportion of Britain’s labour force since the 1850s but we still know relatively little about their history. This article argues that there has been a systematic neglect of one of the largest sectors of female employment by historians and investigates why this might be. It suggests that this neglect is connected to framings of work that have overlooked the service sector as a whole as well as to a continuing unease with the consumer society’s transformation of social life. One element of that transformation was the rise of new forms of aesthetic, emotional and sexualised labour. Certain kinds of ‘shop girls’ embodied these in spectacular fashion. As a result, they became enduring icons of mass consumption, simultaneously dismissed as passive cultural dupes or punished as powerful agents of cultural destruction. This article interweaves the social history of everyday shop workers with shifting representations of the ‘shop girl’, from Victorian music hall parodies, through modernist social theory, to the bizarre bombing of the Biba boutique in London by the Angry Brigade on May Day 1971. It concludes that progressive historians have much to gain by reclaiming these workers and the service economy that they helped create

Introduction to special issue:New Times Revisited: Britain in the 1980s

The authors in this volume are collectively engaged with a historical puzzle: What happens if we examine the decade once we step out of the shadows cast by Thatcher? That is, does the decade of the 1980s as a significant and meaningful periodisation (equivalent to that of the 1960s) still work if Thatcher becomes but one part of the story rather than the story itself? The essays in this collection suggest that the 1980s only makes sense as a political period. They situate the 1980s within various longer term trajectories that show the events of the decade to be as much the consequence as the cause of bigger, long-term historical processes. This introduction contextualises the collection within the wider literature, before explaining the collective and individual contributions made

The Physics of the B Factories

This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and data taking related issues. Part B discusses tools and methods used by the experiments in order to obtain results. The results themselves can be found in Part C

Class, Youth and Dirty Jobs: The Working-Class and Post-War Britain in Pete Townshend's Quadrophenia

FOS

The Last Post: Music, Remembrance and the Great War

At eleven o'clock on the morning of the 11th November 1919 the entire British Empire came to a halt to remember the dead of the Great War. During the first two-minute silence all transport stayed still, all work ceased and millions stood motionless in the streets. The only human sound to be heard was the desolate weeping of those overcome by grief. Then the moment was brought to an end by the playing of the Last Post. A century on, that lone bugle call remains the most emotionally charged piece of music in public life. In an increasingly secular society, it is the closest thing we have to a sacred anthem. Yet along with the poppy, the Cenotaph and the tomb of the Unknown Warrior, its power is profoundly modern. It is a response to the trauma of war that could only have evolved in a democratic age. In this moving exploration of the Last Post's history, Alwyn W Turner considers the call's humble origins and shows how its mournful simplicity reached beyond class, beyond religion, beyond patriotism to speak directly to peoples around the world. Along the way he contemplates the relationship between history and remembrance, and seeks out the legacy of the First World War in today's culture

The attitudes of high school pupils to technology

SIGLEAvailable from British Library Document Supply Centre- DSC:DXN061212 / BLDSC - British Library Document Supply CentreGBUnited Kingdo