cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mass-selective removal of ions from Paul traps using parametric excitation
Creators: name: Schmidt, Julian
name: Hönig, Daniel
name: Weckesser, Pascal
name: Thielemann, Fabian
name: Schaetz, Tobias
name: Karpa, Leon
Publisher: name: Berlin ; Heidelberg : Springer
Year: 2020
Subjects: subject: Laser optics
subject: Physics
subject: Charge-to-mass ratios
subject: Electric quadrupoles
subject: Excitation voltage
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study a method for mass-selective removal of ions from a Paul trap by parametric excitation. This can be achieved by applying an oscillating electric quadrupole field at twice the secular frequency ωsec using pairs of opposing electrodes. While excitation near the resonance with the secular frequency ωsec only leads to a linear increase of the amplitude with excitation duration, parametric excitation near 2ωsec results in an exponential increase of the amplitude. This enables efficient removal of ions from the trap with modest excitation voltages and narrow bandwidth, therefore, substantially reducing the disturbance of ions with other charge-to-mass ratios. We numerically study and compare the mass selectivity of the two methods. In addition, we experimentally show that the barium isotopes with 136 and 137 nucleons can be removed from small ion crystals and ejected out of the trap while keeping 138Ba + ions Doppler cooled, corresponding to a mass selectivity of better than Δ m/ m= 1 / 138. This method can be widely applied to ion trapping experiments without major modifications since it only requires modulating the potential of the ion trap.
Square-well potential in quaternic quantum mechanics
Creators: name: Giardino, Sergio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-dimensional infinite square well is the simplest solution of quantum mechanics, and consequently one of the most important. In this article, we provide this solution using the real Hilbert space approach to quaternic quantum mechanics ($\mathbbm{H}$QM). We further provide the one-dimensional finite as well and a method to generate quaternic solutions from non-degenerate complex solutions.
description: Accept by Europhysics Letters
Transfer of Process References between Machine Tools for Online Tool Condition Monitoring
Creators: name: Denkena, Berend
name: Bergmann, Benjamin
name: Stiehl, Tobias H.
Publisher: name: Basel : MDPI
Year: 2021
Subjects: subject: Knowledge transfer
subject: Machine tools
subject: Process monitoring
subject: Turning
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Process and tool condition monitoring systems are a prerequisite for autonomous production. One approach to monitoring individual parts without complex cutting simulations is the transfer of knowledge among similar monitoring scenarios. This paper introduces a novel monitoring method which transfers monitoring limits for process signals between different machine tools. The method calculates monitoring limits statistically from cutting processes carried out on one or more similar machines. The monitoring algorithm aims to detect general process anomalies online. Experiments comprise face‐turning operations at five different lathes, four of which were of the same model. Results include the successful transfer of monitoring limits between machines of the same model for the detection of material anomalies. In comparison to an approach based on dynamic time warping (DTW) and density‐based spatial clustering of applications with noise (DBSCAN), the new method showed fewer false alarms and higher detection rates. However, for the transfer between different models of machines, the successful application of the new method is limited. This is predominantly due to limitations of the employed process component isolation and differences between machine models in terms of signal properties as well as execution speed.
Scalar Field Probes of Power-Law Space-Time Singularities
Creators: name: Blau, Matthias
name: Frank, Denis
name: Weiss, Sebastian
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyse the effective potential of the scalar wave equation near generic space-time singularities of power-law type (Szekeres-Iyer metrics) and show that the effective potential exhibits a universal and scale invariant leading x^{-2} inverse square behaviour in the ``tortoise coordinate'' x provided that the metrics satisfy the strict Dominant Energy Condition (DEC). This result parallels that obtained in hep-th/0403252 for probes consisting of families of massless particles (null geodesic deviation, a.k.a. the Penrose Limit). The detailed properties of the scalar wave operator depend sensitively on the numerical coefficient of the x^{-2}-term, and as one application we show that timelike singularities satisfying the DEC are quantum mechanically singular in the sense of the Horowitz-Marolf (essential self-adjointness) criterion. We also comment on some related issues like the near-singularity behaviour of the scalar fields permitted by the Friedrichs extension.
description: v2: 21 pages, JHEP3.cls, one reference added
title: Giant pseudomeningocele
Creators: name: Guilhem, Emily
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Neuroradiology
subject: Abdomen
subject: Interventional non-vascular
subject: MR physics
subject: Musculoskeletal spine
subject: Neuroradiology peripheral nerve
subject: Neuroradiology spine
subject: CT
subject: MR
subject: Clinical Cases

description: Clinical History: A 23-year-old woman with biopsy proven 7cm benign left-pelvic schwannoma. The patient underwent surgical excision and represented 8 months later with a large fluctuant swelling in the left hemipelvis. Further imaging was arranged with a view to drainage. 

description: 23 years, female
Balance in stable categories
Creators: name: Nicolas, Pedro
name: Saorin, Manuel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18A20, 18D99, 18E30

description: We study when the stable category of an abelian category modulo a full additive subcategory is balanced and, in case the subcategory is functorially finite, we study a weak version of balance. Precise necessary and sufficient conditions are given in case the subcategory is either a Serre class or a class consisting of projective objects. The results in this second case apply very neatly to (generalizations of) hereditary abelian categories.
description: 20 pages
The Scientific Journalism According to Elisabetta Caminer: Objectivity, Exactness of Information and Universality
Creators: name: Liuccio, Michaela
Publisher: name: Medicina nei secoli: Journal of history of medicine and medical humanities
Year: 2024

description: Elisabetta Caminer offers the first example in Italy of an editor of literary journals. She wrote in order to divulgate subjects that were not normally accessible to everyone, yet also to combat the prejudices. The attention placed on the exact source of all the news and excerpts reported represented a rather unique case in the history of Italian journalism of the time. In her texts emerge the objectivity of information, the responsibility for expressive choices, sometimes even subversive - as in the choice of the code - and the awareness of change in scientific communication. Science, morality, politics, academies, inventions, education, all these themes found in the pages of the her magazine a scientific, rational, rigorous treatment, which left little room for subjective judgment, yet a great deal for the objectivity of the text. As well as, in her articles we found a commitment to the battle for women’s rights to scientific education.
description: Medicina nei secoli: Journal of history of medicine and medical humanities, Vol. 36 No. 2 (2024)
Challenges and implementation aspects of switched-mode power supplies with digital control for automotive applications
Creators: name: Quenzer-Hohmuth, Samuel
name: Rosahl, Thoralf
name: Ritzmann, Steffen
name: Wicht, Bernhard
Publisher: name: Göttingen : Copernicus Publications
Year: 2016
Subjects: subject: Closed loop control systems
subject: DC-DC converters
subject: Digital control systems
subject: Frequency converters
subject: Shape memory effect
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Switched-mode power supplies (SMPS) convert an input DC-voltage into a higher or lower output voltage. In automotive, analog control is mostly used in order to keep the required output voltages constant and resistant to disturbances. The design of robust analog control for SMPS faces parameter variations of integrated and external passive components. Using digital control, parameter variations can be eliminated and the required area for the integrated circuit can be reduced at the same time. Digital control design bears challenges like the prevention of limit cycle oscillations and controller-wind-up. This paper reviews how to prevent these effects. Digital control loops introduce new sources for dead times in the control loop, for example the latency of the analog-to-digital-converter (ADC). Dead times have negative influence on the stability of the control loop, because they lead to phase delays. Consequently, low latency is one of the key requirements for analog-to-digital-converters in digitally controlled SMPS. Exploiting the example of a 500 kHz-buck converter with a crossover frequency of 70 kHz, this paper shows that the 5 μs-latency of a ΔΣ-analog-to-digital-converter leads to a reduction in phase margin of 126°. The latency is less critical for boost converters because of their inherent lower crossover frequencies. Finally, the paper shows a comparison between analog and digital control of SMPS with regard to chip area and test costs.
First catalog of strong lens candidates in the COSMOS field
Creators: name: Faure, Cecile
name: Kneib, Jean-Paul
name: Covone, Giovanni
name: Tasca, Lidia
name: Leauthaud, Alexie
name: Capak, Peter
name: Jahnke, Knud
name: Smolcic, Vernesa
name: de la Torre, Sylvain
name: Ellis, Richard
name: Finoguenov, Alexis
name: Koekemoer, Anton
name: Fevre, Olivier Le
name: Massey, Richard
name: Mellier, Yannick
name: Refregier, Alexandre
name: Rhodes, Jason
name: Scoville, Nick
name: Schinnerer, Eva
name: Taylor, James
name: Van Waerbeke, Ludovic
name: Walcher, Jakob
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first catalog of 67 strong galaxy-galaxy lens candidates discovered in the 1.64 square degree Hubble Space Telescope COSMOS survey. Twenty of these systems display multiple images or strongly curved large arcs. Our initial search is performed by visual inspection of the data and is restricted, for practical considerations, to massive early-type lens galaxies with arcs found at radii smaller than ~5''. Simple mass models are constructed for the best lens candidates and our results are compared to the strong lensing catalogs of the SLACS survey and the CASTLES database. These new strong galaxy-galaxy lensing systems constitute a valuable sample to study the mass distribution of early-type galaxies and their associated dark matter halos. We further expect this sample to play an important role in the testing of software algorithms designed to automatically search for strong gravitational lenses. From our analysis a robust lower limit is derived for the expected occurrence of strong galaxy-galaxy systems in current and future space-based wide-field imaging surveys. We expect that such surveys should uncover a large number of strong lensing systems (more than 10 systems per square degree), which will allow for a detailed statistical analysis of galaxy properties and will likely lead to constraints on models of gravitational structure formation and cosmology. The sample of strong lenses is available here: http://cosmosstronglensing.uni-hd.de/
description: 31 pages, 20 figures. Replaced Table 4, fig 18 and 19 (error found in the modeling code). Erratum accepted for publication in ApJ. No changes in content
title: Hirayama disease: MRI spectrum of a rare disease
Creators: name: Patil, Monica
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Neuroradiology
subject: Musculoskeletal spine
subject: Neuroradiology spine
subject: CT
subject: MR
subject: Myelography
subject: Clinical Cases

description: Clinical History: 3 male patients of 17, 21 and 25 years of age respectively presented with complaints of bilateral upper limb weakness, gradually increasing tremors and fasciculations in bilateral upper limbs of 2-4 months duration. Complaints were more significant in one limb than the other.

description: 17 years, 21 years, 25 years, all male
Immunochemical detection of lysergic acid diethylamide using a photochemically linked immunogen
Creators: name: Kerrigan, Sarah
Publisher: name: University of British Columbia
Year: 2009

description: A new immunogen was prepared in which lysergic acid diethylamide (LSD) was photochemically attached to keyhole limpet hemocyanin (KLH) using a heterobifunctional linker. Photoactivation of the aryl azide group in the linker produces a reactive nitrene, which facilitates the covalent attachment of LSD to the protein at a number of different sites on the drug. Multi-site attachment of the drug is advantageous, as this in principle facilitates epitope recognition, which therefore increases the antiserum sensitivity. Using this method, it was possible to attach an average of 35 LSD molecules to each KLH molecule, which is sufficient for immune recognition of the drug. High affinity polyclonal antibodies to LSD were raised against the photochemically linked immunogen. The equilibrium association constant, Ka, was estimated to be 1.3 x 10¹⁰ M⁻¹ using a radiolabeled technique. Comparison of the new antiserum with commercial antibody preparations indicated it had the highest affinity, lowest dissociability and was the most sensitive antiserum by enzyme-linked immunosorbent assay (ELISA). The new antiserum was used for drug detection and extraction purposes. A high affinity immunochromatographic support was prepared, which allowed sub-nanogram quantities of LSD to be selectively extracted from blood and urine with greater than 80% efficiency. An indirect ELISA was developed for the detection of LSD in human urine specimens. The limit of detection was 10 pg/mL when 50 pL urine was used. Analytical recoveries of LSD were between 98 - 106 % and intra and inter-assay precision was good over a wide range of concentrations. Within-run and between-run CVs were 3.7% (n=4) and 6.3% (n=12) for a sample which contained 0.2 ng/mL LSD in urine. The upper and lower limits of quantification were between 7 ng/mL and 50 pg/mL, which is well within the region of forensic interest. The cross-reactivity of the new antiserum with the major metabolite, nor-LSD, was 52%. Other derivatives of interest which cross-react with the antibody included lysergic acid methylproplyamide (34%) and 2-oxo-3-hydroxy-LSD (3.4%). The UBC ELISA, which offered improved sensitivity and precision compared to a number of commercial immunoassays, was used to detect LSD in non-urine matrices, including forensic case samples of post-mortem blood, urine, bile and vitreous fluid.
Tribological study on tailored-formed axial bearing washers
Creators: name: Pape, Florian
name: Coors, Timm
name: Barroi, Alexander
name: Hermsdorf, Jörg
name: Mildebrath, Maximilian
name: Hassel, Thomas
name: Kaierle, Stefan
name: Matthias, Tim
name: Chugreev, Alexander
name: Chugreeva, Anna
name: Behrens, Bernd-Arno
name: Overmeyer, Ludger
name: Poll, Gerhard
Publisher: name: Tokyo : [Verlag nicht ermittelbar]
Year: 2018
Subjects: subject: Axial bearing washers
subject: Bearing fatigue life
subject: Tailored forming
subject: Dewey Decimal Classification::600 | Technik

description: To enhance tribological contacts under cyclic load, high performance materials are required. Utilizing the same high-strength material for the whole machine element is not resource-efficient. In order to manufacture machine elements with extended functionality and specific properties, a combination of different materials can be used in a single component for a more efficient material utilization. By combining different joining techniques with subsequent forming, multi-material or tailored components can be manufactured. To reduce material costs and energy consumption during the component service life, a less expensive lightweight material should be used for regions remote from the highly stressed zones. The scope is not only to obtain the desired shape and dimensions for the finishing process, but also to improve properties like the bond strength between different materials and the microscopic structure of the material. The multi-material approach can be applied to all components requiring different properties in separate component regions such as shafts, bearings or bushes. The current study exemplarily presents the process route for the production of an axial bearing washer by means of tailored forming technology. The bearing washers were chosen to fit axial roller bearings (type 81212). The manufacturing process starts with the laser wire cladding of a hard facing made of martensitic chromium silicon steel (1.4718) on a base substrate of S235 (1.0038) steel. Subsequently, the bearing washers are forged. After finishing, the surfaces of the bearing washers were tested in thrust bearings on an FE-8 test rig. The operational test of the bearings consists in a run-in phase at 250 rpm. A bearing failure is determined by a condition monitoring system. Before and after this, the bearings were inspected by optical and ultrasonic microscopy in order to examine whether the bond of the coat is resistant against rolling contact fatigue. The feasibility of the approach could be proven by endurance test. The joining zone was able to withstand the rolling contact stresses and the bearing failed due to material-induced fatigue with high cycle stability.
title: Ruptured abdominal aortic aneurysm with aortocaval fistula
Creators: name: Fettane Gómez, Said
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Cardiovascular
subject: Vascular
subject: Veins / Vena cava
subject: CT
subject: Acute
subject: Aneurysms
subject: Fistula
subject: Clinical Cases

description: Clinical History: A 52-year-old man came to the emergency department complaining of increasing epigastric pain in the last 48 hours. An emergent Ultrasound was performed by a non-radiologist physician arising the suspicion for a perforated ulcer. No significant alterations were found on the complete blood count and an abdominopelvic contrast-enhanced CT was ordered for a better characterisation.

description: 52 years, male
Electron-hole response function of transition metal trichalcogenides NbSe$_3$ and monoclinic-TaS$_3$
Creators: name: Guster, Bogdan
name: Pruneda, Miguel
name: Ordejón, Pablo
name: Canadell, Enric
name: Pouget, Jean-Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: NbSe$_3$ and monoclinic-TaS$_3$ ($m$-TaS$_3$) are quasi-1D metals containing three different types of chains and undergoing two different charge density wave (CDW) Peierls transitions at T$_{P_1}$ and T$_{P_2}$. The nature of these transitions is discussed on the basis of first-principles DFT calculation of their electron-hole Lindhard response function. As a result of stronger inter-chain interactions the Fermi surface (FS) and Lindhard function of NbSe$_3$ are considerably more complex than those for $m$-TaS$_3$; however a common scenario can be put forward to rationalize the results. The intra-chain inter-band nesting processes dominate the strongest response for both type I and type III chains of the two compounds. Two well-defined maxima of the Lindhard response for NbSe$_3$ are found with the (0$a$*, 0$c$*) and (1/2$a$*, 1/2$c$*) transverse components at T$_{P_1}$ and T$_{P_2}$, respectively, whereas the second maximum is not observed for $m$-TaS$_3$ at T$_{P2}$. Analysis of the different inter-chain coupling mechanisms leads to the conclusion that FS nesting effects are only relevant to set the transverse $a$* components in NbSe$_3$. For the transverse coupling along $c$* in NbSe$_3$ and along both $a$* and $c$* for $m$-TaS$_3$, one must take into account the strongest inter-chain Coulomb coupling mechanism. Phonon spectrum calculations show the formation of a giant 2$k_F$ Kohn anomaly in $m$-TaS$_3$. All these results support the weak coupling scenario for the Peierls transition of transition metal trichalcogenides.
Realtà e Possibilità della Resistenza degli Insegnanti Precari:Neoliberismo e Educazione
Creators: name: Goncalves De Freitas, Rogerio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: La tesi ha avuto come domanda di ricerca la seguente questione: in che modo i processi di resistenza collettiva degli insegnanti precari sono indeboliti all'interno della scuola pubblica italiana? E ancora: quali sono le possibilità di sintesi nella dialettica sussunzione/resistenza? Come obiettivo generale la ricerca ha investigato la realtà e la possibilità della resistenza collettiva degli insegnanti precari davanti alle politiche neoliberiste in una congiuntura di crisi economica e di crisi di rappresentanza.
Soft-gluon corrections in hard-scattering processes through NNNLO
Creators: name: Kidonakis, Nikolaos
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss soft-gluon corrections in hard-scattering processes and their resummation. I present master formulas for the expansion of the resummed cross section through NNNLO and discuss the significance of these corrections in a number of processes.
description: 5 pages, presented at the XIV International Workshop on Deep Inelastic Scattering (DIS 2006), Tsukuba, Japan, April 20-24, 2006
Remarks on Exponential Stability for a Coupled System of Elasticity and Thermoelasticity with Second Sound
Creators: name: Rissel, Manuel
name: Wang, Ya-Guang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B35, 35B40, 35M33, 47D06

description: We study the large time behavior of solutions to a linear transmission problem in one space dimension. The problem at hand models a thermoelastic material with second sound confined by a purely elastic one. We shall characterize all equilibrium states of the considered system and prove that every solution approaches one designated equilibrium state with an exponential rate as time goes to infinity. Hereto, we apply methods from the theory of strongly continuous semigroups. In particular, we obtain uniform resolvent bounds for the underlying generator. This removes the largeness assumption of elastic wave speeds imposed in [Y.P. Meng and Y.G. Wang, Anal. Appl. (Singap.) 13 (2015)] for having an exponential energy decay rate when the problem only has the trivial equilibrium. In an appendix we provide a similar exponential stability result for the case where heat conduction is modeled using Fourier's law.
description: 23 pages, 1 figure
THE MICROBIOTA-GUT-BRAIN AXIS. A STUDY IN ZEBRAFISH (DANIO RERIO)
Creators: name: Borrelli, Luca
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The microbiota is essential in the host's physiology, development, reproduction, immune system, nutrient metabolism, in brain chemistry and behavior. The gut microbiota plays a crucial role in the bidirectional gut–brain axis, a communication that integrates the gut and central nervous system (CNS) activities, and thus, the concept of microbiota–gut–brain axis is emerging where the microbes have considered as signaling components in the gut-brain axis. Animal studies reveals, in particular, that gut bacteria influence the brain-derived neurotrophic factor (BDNF) levels, and behavior specially after probiotic administration. How this alterations in brain chemistry are related to specific behavioral changes is unclear but it will likely be a focus of future research efforts.  Among these animal studies, to our knowledge, no studies on the microbiota–gut–brain axis in zebrafish (Danio rerio) have been carried out. We hypothesized that a continuous administration of an exogenous probiotic might also influence the host's behavior and neurochemical gene expression. The purpose of this study was to determine whether probiotic strain can modulate gut commensal bacteria influencing  brain neurochemistry and behavior in zebrafish. Thus, we treated adult zebrafish for 28 days with Lactobacillus rhamnosus, a probiotic strain which is one of the main components of the commensal microflora of human intestinal tract and it is widely used as a probiotic in mammals to adult male and female AB  wild tipe zebrafish. We established differences between treated with probiotic strain and control group in shoaling behavior pattern, using a Video Tracker software; we quantified brain-derived neurotrophic factor (BDNF) gene expression by using RT-qPCR; we at last analyzed the microbiota profiles within two experimental groups by sing the culture-independent methods such as Denaturing Gradient Gel Electrophoresis (DGGE) and Next-Generation Sequencing (NGS). The probiotic treated group, compared to the control group, showed a statistically significant near two-fold increase in BDNF gene expression, different shoaling behavioural pattern and a shift in microbiota composition with a significant increase of Firmicutes and a reduction of Proteobacteria.
The results of each approach may support the existence of a microbiota–gut–brain axis, in adult zebrafish and in line with numerous animal studies we can speculate that microbiota manipulation could influence behavior and brain expression of BDNF.
title: CT colonography (CTC) of NSAID induced diaphragm disease (DD) of the colon
Creators: name: Carmody, Emma
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Abdominal imaging
subject: Gastrointestinal tract
subject: CT-Colonography
subject: Clinical Cases

description: Clinical History: Five patients, between the ages of 56 - 68, presented to their local gastroenterology services. Four of these were female, the fifth was male. One patient complained of bloody diarrhoea, while another presented with weightless and early satiety, the other three were referred for workup of anaemia. Notably, all five patients had a history of chronic NSAID use. All five patients displayed iron deficiency anaemia on investigation. All patients underwent colonoscopy and CT colonography as part of their work-up. All identified lesions were biopsied and followed up to ensure stability.

description: 65 years, female
Centrifuge Modelling of Flexible Retaining Walls in Saturated Sand under Seismic Actions.
Creators: name: Tricarico, Michele
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: In this work the seismic behaviour of flexible retaining walls embedded in saturated sand has been inevstigate carring out a total of seven centrifuge tests at the Schofield Centre of University of Cambridge. The head of piezometric fluid has been collocated at the excavated level. Two possible structural configurations have been chosen: cantilever walls and walls with one level of props at the top. The results have been examined in detail in terms of the monitored physical quantities: acceleration in the soil, walls displacements, pore pressures, bending moment and axial force in the props when present. Focus is made on amplification phenomena, phase difference in the accelerations, developing of pore pressures and related decrease of soil shearing resistance, collapse mechanism of the walls, entity of accumulated displacements and changing in bending moment distribution. A further level of interpretation has been represented by the comparison of the results with respect tests performed on similar models in dry sand and the prevision of bending moment with Limit Equilibrium Analyses. In the last Chapter the calibration of  an advanced constitutive model is carried out.
A 110/230 V AC and 15-400 V DC 0.3 W Power-Supply IC With Integrated Active Zero-Crossing Buffer
Creators: name: Rindfleisch, Christoph
name: Wicht, Bernhard
Publisher: name: New York, NY : IEEE
Year: 2022
Subjects: subject: ac-dc converter
subject: dc-dc converter
subject: high voltage (HV)
subject: light-load efficient
subject: power density
subject: silicon on insulator (SOI)
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This work presents an offline power supply with fully integrated power stage in 0.18 μ m high-voltage (HV) CMOS silicon on insulator (SOI). It supports both ac-dc and dc-dc conversion from 15-400 V input down to 3.3-10 V output and is optimized for applications below 300 mW such as the Internet of Things (IoT), smart home, and e-mobility. An active zero-crossing buffer enables on-chip integration of the HV buffer capacitor. Below 150 V, constant ON-time control is based on voltage intervals, sensed by ten HV threshold-detection circuits. Above 150 V, the converter operates in the resonant mode. It achieves a superior power density of 458 mW/cm3 and 84% peak efficiency.
Link between radio-loud AGNs and host-galaxy shape
Creators: name: Zheng, X. C.
name: Röttgering, H. J. A.
name: Best, P. N.
name: van der Wel, A.
name: Hardcastle, M. J.
name: Williams, W. L.
name: Bonato, M.
name: Prandoni, I.
name: Smith, D. J. B.
name: Leslie, S. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The morphology of quiescent galaxies has been found to be correlated with the activity of their central super massive black hole. In this work, we use data from the first data release of the LOFAR Two$-$Metre Sky Survey (LoTSS DR1) and the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) to select more than 15 000 quiescent galaxies at $z<0.3$ to investigate the connection between radio-loud active galactic nuclei (RLAGNs) and the morphology of their host galaxy. Taking advantage of the depth of LoTSS, we find that the fraction of RLAGNs with $L_{\rm 150\,MHz}>10^{21}\rm\,W\,Hz^{-1}$ at fixed stellar mass, velocity dispersion, or surface mass density does not depend on the galaxy projected axis ratio ($q$). However, the high-power ($L_{\rm 150\,MHz}>10^{23}\rm\,W\,Hz^{-1}$) RLAGNs are more likely to be found in massive, round galaxies, while the low- and intermediate-power ($L_{\rm 150\,MHz}\leq10^{23}\rm\,W\,Hz^{-1}$) RLAGNs have similar distributions of $q$ to non-RLAGN galaxies. We argue that our results support the picture that high-power RLAGNs are more easily triggered in galaxies with a merger-rich history, while low-power RLAGNs can be triggered in galaxies growing mainly via secular processes. Our work also supports the idea that the low-luminosity RLAGN may be sufficient for maintenance-mode feedback in low-mass quiescent galaxies with disc-like morphology, which is based on a simple extrapolation from the observed energy balance between cooling and RLAGN-induced cavities in massive clusters. We find no significant difference between the $q$ distributions of RLAGNs likely to be found in clusters and those likely not found in clusters after controlling the radio luminosity and stellar mass of the two samples, indicating that the environment does not significantly influence the morphology--RLAGN correlation.
description: 14 pages, 8 figures, accepted for publication in A&A
Massive binaries in high-mass star-forming regions: A multi-epoch radial velocity survey of embedded O-stars
Creators: name: Apai, Daniel
name: Bik, Arjan
name: Kaper, Lex
name: Henning, Thomas
name: Zinnecker, Hans
name: ;
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first multi-epoch radial velocity study of embedded young massive stars using near-infrared spectra obtained with ISAAC mounted at the ESO Very Large Telescope, with the aim to detect massive binaries. Our 16 targets are located in high-mass star-forming regions and many of them are associated to known ultracompact HI I regions, whose young age ensures that dynamic evolution of the clusters did not influence the intrinsic binarity rate. We identify two stars with about 90 km/s velocity differences between two epochs proving the presence of close massive binaries. The fact that 2 out of the 16 observed stars are binary systems suggests that at least 20% of the young massive stars are formed in close multiple systems, but may also be consistent with most if not all young massive stars being binaries. In addition, we show that the radial velocity dispersion of the full sample is about 35 km/s, significantly larger than our estimated uncertainty (25 km/s). This finding is consistent with similar measurements of the young massive cluster 30 Dor which might have a high intrinsic binary rate. Furthermore, we argue that virial cluster masses derived from the radial velocity dispersion of young massive stars may intrinsically overestimate the cluster mass due to the presence of binaries.
description: To appear in the Astrophysical Journal (January 10, 2007, v654n 2 issue)
Scalar mode analysis of the warped Salam-Sezgin model
Creators: name: Lee, Hyun Min
name: Papazoglou, Antonios
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the scalar perturbation sector of the general axisymmetric warped Salam-Sezgin model with codimension-2 branes. We focus on the perturbations which mix with the dilaton. We show that the scalar fluctuations analysis can be reduced to studying two scalar modes of constant wavefunction, plus modes of non-constant wavefunction which obey a single Schroedinger equation. From the obtained explicit solution of the scalar modes, we point out the importance of the non-constant modes in describing the four dimensional effective theory. This observation remains true for the unwarped case and was neglected in the relevant literature. Furthermore, we show that the warped solutions are free of instabilities.
description: 20 pages, 1 figure, comments and references added, typo changing conclusions corrected
title: A rare case of breast augmentation: Direct self-injection of silicone through the nipple
Creators: name: Lomoro, Pascal
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Breast imaging
subject: Breast
subject: Mammography
subject: MR
subject: Ultrasound
subject: Screening
subject: Foreign bodies
subject: Neoplasia
subject: Clinical Cases

description: Clinical History: A 47-years-old woman referred to the breast unit of our institution to undergo her first mammography. There was no familial or personal history of breast cancer.
Clinical examination did not reveal breast asymmetry, nodules, nipple’s discharge or local pain. No axillary adenopathies were palpable.

description: 47 years, female
Switching antipsychotics: how and where a prolonged treatment with a typical antipsychotic affects the topography of postsynaptic density gene expression induced by an atypical antipsychotic.
Relevance for pychosis treatment.
Creators: name: Marmo, Federica
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Typical and atypical antipsychotics can be characterized at preclinical levels by differential induction of several Immediate Early Genes localized at cortical and subcortical regions related to pathogenesis of  psychiatric disorders and antipsychotics action. So, genes expression. Molecular imaging under different treatment paradigms could be considered a sensitive molecular tool to investigate where drugs act, predicting, with a translational approach a clinical outcome. In clinical practice psychiatrists frequently switch from one antipsychotic to another with different receptorial profile when patients show poor or no treatment response or intolerable adverse effect, but the post-switch antipsychotics response is different compared to drug naïve patients. Neuroimaging studies highlighted morphological and molecular changes after long-term administration in brain regions affected by antipsychotics, resulting in unexpected clinical outcome. In our study we analyze Immediate Early Genes expression of proteins localized ad Postsynaptic Density (PSD), where dopaminergic and glutamatergic transmission converging, in an animal model of switching. Thus we highlight that first chronic treatment with strong D2 blocker affects genes expression induced by second chronic treatment with antipsychotic characterized by a different receptorial profile, confirming, at molecular level, what happens in clinical practice and giving new challenges towards antipsychotic mechanism of action.
Assisted Suicide and Malingering in Xenophon of Ephesus’ Anthia and Habrocomes: Literary Sources, Medical Ethics and Parascientifics Aspects (Xen. Eph. 3,4-5; 5,7)
Creators: name: Savino, Christina
Publisher: name: Medicina nei secoli: Journal of history of medicine and medical humanities
Year: 2024

description: In Xenophon of Ephesus’ Anthia and Habrocomes (1st – 2nd centuries AD) two episodes address medical topics that are most controversial nowadays: assisted suicide and malingering. This article provides an analysis of both episodes aiming to reconstruct the ancient Greek views on these subjects and better understand their cultural past.
description: Medicina nei secoli: Journal of history of medicine and medical humanities, Vol. 36 No. 2 (2024)
title: Gastric cancer metastasis to the breast
Creators: name: Güldoğan Yıldırım, Nilgün
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Breast imaging
subject: Breast
subject: Mammography
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Diagnostic procedure
subject: Metastases
subject: Clinical Cases

description: Clinical History: A 52-year-old female patient applied to our clinic due to a rapidly growing palpable breast mass. She had no history of breast cancer in her family. She had subtotal distal gastrectomy and cytoreductive surgery due to signet-cell gastric carcinoma with intraabdominal lymph node, peritoneal and ovarian metastases 18 months ago. She developed bone metastases in the L3 vertebra and left iliac bone 6 months after the operation.

description: 52 years, female
The urban link : why global cities matter for global governance
Creators: name: Acuto, Michele
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: HT330.A38 2011
subject: Metropolitan areas
subject: Globalization
subject: International organization

description: This thesis is about the importance of global cities for world politics. While there is a growing body of literature concerned with explaining the transformation of the international order, almost no theorization has taken into account the key metropolises of our time as elements of these revolutions. I seek to overcome this gap by demonstrating how global cities have a pervasive agency in contemporary global governance. They, I argue, are influential both in an 'actively passive' sense, recasting the geographies of local politics (their actant dimension) as well as in the more active ways of diplomacy and transnational networking (their actor dimension). Looking at global cities brings about three fundamental advantages on traditional IR paradigms. First, it facilitates a structurationist turn in IR towards more nuanced analyses of world politics. Second, it widens the horizon of the discipline through a multiscalar image of global governance. Third, it underscores how global cities have a strategic positioning when it comes to core contemporary challenges such as climate change. In order to illustrate this theoretical and practical influence, I rely on a structurationist framework (applied via actor-network theory) to identify global cities' agency in terms of their capacity to produce political structures that impact the geography of global governance. My empirical analysis is respectively dedicated to deconstructing their twin actant/actor dimensions, which I then reassemble in the conclusions. I begin by discussing the politics in global cities, looking at the 'glocal' policymaking processes of strategic urban planning (SUP) in London and Sydney. Then, focusing on the politics of global cities as actors, I analyze the Climate Leadership Group (C40) as a transnational network for metropolises such as London and Sydney to partake in global environmental governance. Overall, I argue, the production of global city-driven policy structures impacts global governance in that it charts new political geographies for collective and multiscalar action. Global cities, I demonstrate, can (and do) exercise a substantial influence in these realms. Yet, this agency remains centred on some key neoliberal continuities which global cities do not deny, if not uphold, therefore posing pivotal challenges that remind us not to take the geopolitical role of cities for granted. It is thus up to international scholars to engage in the analysis of these dynamics, while allowing for these metropolises to broaden the critical potential and multiscalar reach of the discipline. Global cities will certainly not wait.
title: Tibial pain explained by a rare tumour
Creators: name: Roels, Stijn
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Musculoskeletal system
subject: Extremities
subject: Musculoskeletal bone
subject: Conventional radiography
subject: MR
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 30-year-old man consulted for a right-sided pretibial swelling. He noticed this swelling since 2 years after being kicked in this region during a soccer game. There was severe pain at palpation, but no spontaneous or nightly pain. Personal history includes ulcerative colitis. No biochemical abnormalities were found.

description: 30 years, male
Self-modulation of Fast Radio Bursts
Creators: name: Sobacchi, Emanuele
name: Lyubarsky, Yuri
name: Beloborodov, Andrei M.
name: Sironi, Lorenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast Radio Bursts (FRBs) are extreme astrophysical phenomena entering the realm of non-linear optics, a field developed in laser physics. A classical non-linear effect is self-modulation. We examine the propagation of FRBs through the circumburst environment using the idealised setup of a monochromatic linearly-polarised GHz wave propagating through a uniform plasma slab of density $N$ at distance $R$ from the source. We find that self-modulation occurs if the slab is located within a critical radius $R_{\rm crit}\sim 10^{17}(N/10^2{\rm\; cm}^{-3})(L/10^{42}{\rm\; erg\; s}^{-1}){\rm\; cm}$, where $L$ is the isotropic equivalent of the FRB luminosity. Self-modulation breaks the burst into pancakes transverse to the radial direction. When $R\lesssim R_{\rm crit}$, the transverse size of the pancakes is smaller than the Fresnel scale. The pancakes are strongly diffracted as the burst exits the slab, and interference between the pancakes produces a frequency modulation of the observed intensity with a sub-GHz bandwidth. When $R\sim R_{\rm crit}$, the transverse size of the pancakes becomes comparable with the Fresnel scale, and the effect of diffraction is weaker. The observed intensity is modulated on a timescale of ten microseconds, which corresponds to the radial width of the pancakes. Our results suggest that self-modulation may cause the temporal and frequency structure observed in FRBs.
description: accepted for publication in MNRAS
Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite)
Creators: name: Bačík, Peter
name: Kardošová, Petra
name: Fridrichová, Jana
name: Rybnikova, Olena
name: Škoda, Radek
Publisher: name: Periodico di Mineralogia
Year: 2024

description: We present a detailed study of thermally driven changes in Ca-dominant tourmaline using Electron Probe Microanalysis (EPMA), powder X-ray diffraction (PXRD), Raman and optical absorption spectroscopy (OAS). The KEN samples from Kenya (5 crystal fragments) can be classified as fluor-uvite, while TAN from Tanzania (5 fragments) is dominantly magnesio-lucchesiite. Tourmaline samples were thermally treated in air at 700, 800, 900, and 1000 °C. Both sets were green with different hues, TAN with a bluer hue than KEN. After heating, no significant visual changes were observed in TAN samples until breakdown at 1000 °C. In KEN, after heating at 700 °C, the yellowish tint disappeared. Raman spectroscopy showed no significant changes after heating. Raman luminescence spectra revealed the sharp intensive band located at 680-684 nm, accompanied by a broad band between 690 and 900 nm in all samples heated up to 900 °C. OAS spectra look similar, with two major bands in blue and yellow to red regions. In TAN, the bands shift with the increasing Cr/V from 608 to 604 nm. In KEN with low Cr/V, the band is located between 613-617 nm. After heating at 1000 °C, both samples broke down with different associations: cordierite/indialite and glass from magnesio-lucchesiite, and cordierite/indialite, mullite-like phase, spinel and glass from fluor-uvite. There was a difference in volume between the samples; both samples expanded in volume, but the KEN sample expanded more with larger pores likely resulting from a higher proportion of volatile phase in this sample.
description: Periodico di Mineralogia, Vol. 93 No. 3 (2024)
title: Mounier-Kuhn syndrome: A rare clinical and radiologic condition
Creators: name: Vilas Boas, Filipa
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Chest imaging
subject: Anatomy
subject: CT
subject: CT-High Resolution
subject: Audit and standards
subject: Atelectasis
subject: Clinical Cases

description: Clinical History: A 36-year-old man presented with chronic productive cough and history of recurrent lower respiratory infections. Physical examination was unremarkable. The patient was non-smoker with no occupational or environmental exposure to respiratory irritants. There was no family history of a similar illness. The results of blood analysis were within normal limits. 

description: 36 years, male
title: Ovarian dysgerminoma
Creators: name: Zabía Galíndez, Elena
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Genital (female) imaging
subject: Genital / Reproductive system female
subject: MR
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 23-year-old woman presented with pelvic discomfort without bowel or genitourinary complaints. Physical examination was normal. Laboratory findings were normal except for a slightly elevated serum lactic dehydrogenase.

description: 23 years, female
title: Idiopathic ventral herniation of the spinal cord
Creators: name: Sergot, Leon
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Neuroradiology
subject: Musculoskeletal spine
subject: Neuroradiology spine
subject: MR
subject: Clinical Cases

description: Clinical History: A 38-year-old male patient presented with persistent thoracic back pain, including nocturnal pain, radiating anteriorly and into his right flank. No focal neurological abnormality on examination.

description: 38 years, male