Entretien avec une chercheure émergeante membre de la SHC Katya MacDonald

Th anks for taking the time to answer a few questions from the CHA! Tell us a bit about yourself. Where are you originally from? What is your academic background?Merci d’avoir pris le temps de répondre aux quelques questions de la SHC! Parlez-nous un peu de vous. Vous êtes originaire d’où? Quel est votre parcours scolaire

Proton damage comparison of an e2v technologies n-channel and p-channel CCD204

Comparisons have been made of the relative degradation of charge transfer efficiency in n-channel and p-channel CCDs subjected to proton irradiation. The comparison described in this paper was made using e2v technologies plc. CCD204 devices fabricated using the same mask set. The device performance was compared over a range of temperatures using the same experimental arrangement and technique to provide a like-for-like comparison. The parallel transfer using the p-channel CCD was then optimized using a trap pumping technique to identify the optimal operating conditions at 153 K

Male witches in early modern Europe

Gender at stake critiques historians' assumptions about witch-hunting as well as their explanations for this complex and perplexing phenomenon. The authors insist on the centrality of gender, tradition and ideas about witches in the construction of the witch as a dangerous figure. They challenge the marginalisation of male witches by feminist and other historians. The book shows that large numbers of men were accused of witchcraft in their own right, in some regions, more men were accused than women. The authors analyse ideas about witches and witch prosecution as gendered artefacts of patriarchal societies under which both women and men suffered. They challenge recent arguments and current orthodoxies by applying crucial insights from feminist scholarship on gender to a selection of statistical arguments, social-historical explanations, traditional feminist history and primary sources, including trial records and demonological literature. The authors assessment of current orthodoxies concerning the causes and origins of witch-hunting will be of particular interest to scholars and students in undergraduate and graduate courses in early modern history, religion, culture, gender studies and methodology

Evolution of proton-induced defects in a cryogenically irradiated p-channel CCD

P-channel CCDs have been shown to display improved tolerance to radiation-induced charge transfer inefficiency (CTI) when compared to n-channel CCDs. This is attributed to the properties of the dominant charge-trapping defect species in p-channel silicon relative to the operating conditions of the CCD. However, precise knowledge of defect parameters is required in order to correct for any induced CTI. The method of single trap-pumping allows us to analyse the defect parameters to a degree of accuracy that cannot be achieved with other common defect analysis techniques such as deep-level transient spectroscopy (DLTS). We have analysed using this method the defect distribution in an e2v p-channel CCD204 irradiated with protons at cryogenic temperature (153K). The dominant charge trapping defects at these conditions have been identified as the donor level of the silicon divacancy and the carbon interstitial defect. The defect parameters are analysed both immediately post irradiation and following several subsequent room-temperature anneal phases. The evolution of the defect distribution over time and through each anneal phase provides insight into defect interactions and mobility post-irradiation. The results demonstrate the importance of cryogenic irradiation and annealing studies, with large variations seen in the defect distribution when compared to a device irradiated at room-temperature, which is the current standard procedure for radiation testing

Clinical Remission in Severe Asthma : How to Move From Theory to Practice

ACKNOWLEDGMENTS Medical writing support was provided by Dan Jackson, PhD, CMPP, of CiTRUS Health Group, which was in accordance with Good Publication Practice (GPP4) guidelines. AstraZeneca (Cambridge, UK) funded this support. AMG and DBP both conceived and refined the topic for this manuscript. Both authors contributed to the discussion and revision of the content and approved the final version.Peer reviewedPostprin

A history of the universe in primordial black holes

Primordial black holes (PBHs) are a unique type of astrophysical object. Formed in the early universe but persisting to the present day, they offer an incredible probe for studying the physics of both the early and late universe. Additionally, they provide a natural dark matter candidate without requiring physics beyond the standard model, although there are many constraints on the fraction they can contribute across a broad range of PBH masses. In this thesis, PBHs are studied at both early and late times. Their formation from large overdensities is examined and choices in the calculation of their abundance are considered. These choices are shown to have a limited effect on the PBH abundance and mass distribution, although they will become important in the future. Additionally, robust constraints on the primordial power spectrum are calculated for present and future detections. The detailed shape of the PBH mass distribution is important for constraining the population. Fitting late universe observables with the mass distribution calculated from the power spectrum would be computationally expensive, so it is necessary to use simple parametrisations that capture the underlying shape. A number of these parametrisations are tested against the numerical calculation, and it is found that two of these consistently outperform the often-assumed lognormal, at the cost of an extra fitting parameter. Finally, the possibility that PBHs could explain the LIGO merger events is studied by applying a detailed model of the PBH merger rate and the detection probability of the LIGO instrument. Distributions of the merger rate are produced for a number of observables, indicating that the mass ratio could be an important quantity for distinguishing between astrophysical and primordial black hole mergers. A simple statistical test is carried out to demonstrate that PBHs can explain the totality of the LIGO events, with an appropriate abundance and mass distribution