Signature of metastable electrons in highly charged ion surface interactions

We present autoionization spectra of metastable Ar(8+) and C(4+), N(5+), O(6+) and Ne(8+) scattering off an Al(111) surface with incident energies down to 5 eV. The unprecedented quality of the experimental data permits the observation of a unique, yet undiscovered peak in the structures originating from the metastable projectiles compared to corresponding ground state configurations. Analyzing the peak positions for different projectile species and velocities we demonstrate that the peak must be ascribed to an above-surface transition under participation of the metastable state.Comment: 12 pages, 3 figures, http://pikp28.uni-muenster.de/~ducre

A remembrance of things (best) forgotten: The 'allegorical past' and the feminist imagination

This is the author's PDF version of an article published in Feminist theology© 2012. The definitive version is available at http://fth.sagepub.com/This article discusses the US TV series Mad Men, which is set in an advertising agency in 1960s New York, in relation to two key elements which seem significant for a consideration of the current state of feminism in church and academy, both of which centre around what it means to remember or (not) to forget

Understanding Face and Shame: A Servant-Leadership and Face Management Model

Clergy can have a negative impact on churches and other individuals when they knowingly or unknowingly attempt to save face, that is, try to protect their standing or reputation. The desire to gain face and the fear of losing face and feeling ashamed will likely permeate clergy’s decision-making processes without even being noticed. This study explores the essence of face and face management and the relationship between face management and two characteristics of servant-leadership—awareness and healing—in both Chinese and American churches through the methodology of hermeneutic phenomenology. Prior to this study, to my knowledge, no hermeneutic phenomenological research of face management has been conducted in a church setting. Through a review of the literature, four areas are explored: face and shame, face management, servant-leadership, and face, shame, and face management within the church. This study obtained approval from the Institutional Review Board and informed consent from the participants. Three Chinese and three American Christian ministers were chosen to complete a question sheet and participate in two semi-structured interview sessions. A first cycle of open coding and second cycle of pattern coding were used during data analysis. Face experiences are discussed in light of eight major themes: body, triggers, becoming, face concepts, strategies, emotions, servant-leadership, and the church. Findings from the study help build a servant-leadership and face management model, which can offer an anchored approach for clergy and pastoral counselors to address face and shame and to develop therapeutic interventions

Characterization of a novel recombination event in the Deformed wing bee virus polymerase gene

Είναι γνωστό ότι οι πληθυσμοί των μελισσών προσβάλονται από πλήθος ιών. Η μέθοδος της RT-PCR σε περιοχές της RNA-εξαρτώμενης RNA πολυμεράσης, χρησιμοποιείται συχνά για τον εντοπισμό των ιών σε μέλισσες αλλά και προκειμένου να ταξινομηθούν αυτοί φυλογενετικά. Στην παρούσα έρευνα, μέσω της ανάλυσης του γονιδίου RdRp, περιγράφεται ένας νέος ανασυνδυασμός στο γένωμα του ιού των παραμορφωμένων φτερών. Μέσω ανάλυσης 100 θετικών δειγμάτων μελισσών, εντοπίστηκε για πρώτη φορά ένας ανασυδυασμός, στο 5’ άκρο του γονιδίου της πολυμεράσης. Αυτή είναι η πρώτη περιγραφή ενός τέτοιου ανασυνδυασμού στο γονίδιο της πολυμεράσης του ιού DW, γεγονός που καταδεικνύει τη συνεχή εξέλιξη των ιών αυτών.Honeybee populations are known to be infected by numerous viruses. Reverse transcription-PCR (RT-PCR) of regions of the RNA-dependent RNA polymerase is often used to diagnose the presence in apiaries and also to classify the type of virus detected. In this report, through analysis of the RdRp gene, we describe a novel recombination event in the DWV genome. Similarity plot analysis amplified from hundred positive individuals identified a previously undescribed recombination point in the 5’ region of the polymerase gene. To our knowledge this is the first description of recombination in the DWV polymerase gene and highlights the continuous genetic evolution of these viruses

Imagen y propaganda en las primeras amonedaciones del rey de Aragón

This study analyzes aspects of the iconographic repertoire that contributed to reaffirm and strengthen the royal power of one of the most emblematic kings of Aragon of the late eleventh century: Sancho Ramírez. The effigies stamped on his first coins, which should be considered among his most effective propaganda vehicles, will be studied, as will an element that reached a symbolic significance only understandable in relation to the royal institution that, in turn, promoted it: the cross, now developed as the clearest element of monarchical proclamation. In addition to considering the political motivations that lie beneath these representations, the relevance of the county of Urgell will be discussed and, in connection with it, Doña Sancha, a figure worthy of deeper investigation.Este estudio analiza parte del repertorio iconográfico que contribuyó a reafirmar y fortalecer el poder real de uno de los más emblemáticos reyes de Aragón de finales del siglo XI: Sancho Ramírez. Además de profundizar sobre las efigies estampadas en sus primeras monedas, efectivo vehículo de propaganda, se abordará otro elemento que alcanzó una trascendencia simbólica sólo explicable en relación con esta regia institución que, a su vez, la promocionaba: la cruz, que ahora se convertirá en elemento de proclamación monárquica. Además de examinar las motivaciones políticas que subyacen bajo estas representaciones, se evidenciará la relevancia del condado de Urgell y, en relación con él, la personalidad de doña Sancha, sobre la que tanto merecería profundizar

Waveguide-integrated silicon T centres

The performance of modular, networked quantum technologies will be strongly dependent upon the quality of their quantum light-matter interconnects. Solid-state colour centres, and in particular T centres in silicon, offer competitive technological and commercial advantages as the basis for quantum networking technologies and distributed quantum computing. These newly rediscovered silicon defects offer direct telecommunications-band photonic emission, long-lived electron and nuclear spin qubits, and proven native integration into industry-standard, CMOS-compatible, silicon-on-insulator (SOI) photonic chips at scale. Here we demonstrate further levels of integration by characterizing T centre spin ensembles in single-mode waveguides in SOI. In addition to measuring long spin T_1 times, we report on the integrated centres' optical properties. We find that the narrow homogeneous linewidth of these waveguide-integrated emitters is already sufficiently low to predict the future success of remote spin-entangling protocols with only modest cavity Purcell enhancements. We show that further improvements may still be possible by measuring nearly lifetime-limited homogeneous linewidths in isotopically pure bulk crystals. In each case the measured linewidths are more than an order of magnitude lower than previously reported and further support the view that high-performance, large-scale distributed quantum technologies based upon T centres in silicon may be attainable in the near term

Channelopathies in Cav1.1, Cav1.3, and Cav1.4 voltage-gated L-type Ca2+ channels

Voltage-gated Ca2+ channels couple membrane depolarization to Ca2+-dependent intracellular signaling events. This is achieved by mediating Ca2+ ion influx or by direct conformational coupling to intracellular Ca2+ release channels. The family of Cav1 channels, also termed L-type Ca2+ channels (LTCCs), is uniquely sensitive to organic Ca2+ channel blockers and expressed in many electrically excitable tissues. In this review, we summarize the role of LTCCs for human diseases caused by genetic Ca2+ channel defects (channelopathies). LTCC dysfunction can result from structural aberrations within their pore-forming α1 subunits causing hypokalemic periodic paralysis and malignant hyperthermia sensitivity (Cav1.1 α1), incomplete congenital stationary night blindness (CSNB2; Cav1.4 α1), and Timothy syndrome (Cav1.2 α1; reviewed separately in this issue). Cav1.3 α1 mutations have not been reported yet in humans, but channel loss of function would likely affect sinoatrial node function and hearing. Studies in mice revealed that LTCCs indirectly also contribute to neurological symptoms in Ca2+ channelopathies affecting non-LTCCs, such as Cav2.1 α1 in tottering mice. Ca2+ channelopathies provide exciting disease-related molecular detail that led to important novel insight not only into disease pathophysiology but also to mechanisms of channel function