cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unifying the low-temperature photoluminescence spectra of carbon nanotubes: the role of acoustic phonon confinement
Creators: name: Vialla, Fabien
name: Chassagneux, Yannick
name: Ferreira, Robson
name: Roquelet, Cyrielle
name: Diederichs, Carole
name: Cassabois, Guillaume
name: Roussignol, Philippe
name: Lauret, Jean-Sébastien
name: Voisin, Christophe
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At low temperature the photoluminescence of single-wall carbon nanotubes show a large variety of spectral profiles ranging from ultra narrow lines in suspended nanotubes to broad and asymmetrical line-shapes that puzzle the current interpretation in terms of exciton-phonon coupling. Here, we present a complete set of photoluminescence profiles in matrix embedded nanotubes including unprecedented narrow emission lines. We demonstrate that the diversity of the low-temperature luminescence profiles in nanotubes originates in tiny modifications of their low-energy acoustic phonon modes. When low energy modes are locally suppressed, a sharp photoluminescence line as narrow as 0.7 meV is restored. Furthermore, multi-peak luminescence profiles with specific temperature dependence show the presence of confined phonon modes.
Usneaceratins A and B, two new secondary metabolites from the lichen Usnea ceratina
Creators: name: Bui, Van Muoi
name: Huynh, Bui Linh Chi
name: Pham, Nguyen Kim Tuyen
name: Nguyen, Thi Anh Tuyet
name: Nguyen, Thi Thuy Trang
name: Nguyen, Kim Phi Phung
name: Nguyen, Tan Phat
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Two new compounds, comprising one dibenzofuran, named usneaceratin A (1), and one phenolic acid, named usneaceratin B (2), together with one known dibenzofuran, isousnic acid (3), and two known phenolics, orsellinic acid (4) and methyl orsellinate (5) were clarified from the lichen Usnea ceratina using variously chromatographic methods. Their structures were testified by comprehensive HR-ESI-MS, and NMR spectroscopic analysis, and comparison with published data. Their α-glucosidase inhibitory activity of all compounds was measured. Usneaceratin B (2) possessed better inhibition against α-glucosidase enzyme (IC50 value of 41.8 μM) than the standard drug acarbose (IC50 value of 214.50 μM).
title: Pulmonary volume reduction bronchoscopy for emphysema therapy: what radiologists need to know
Creators: name: Gil Guerra, Ana Belén
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Thorax
subject: Digital radiography
subject: CT-High Resolution
subject: Computer Applications-3D
subject: Occupational / Environmental hazards
subject: Image registration

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To know the different techniques for Pulmonary Volume Reduction by Bronchoscopy (PVRB) and its indications. To define the imaging criteria used for the selection of patients. To know how to perform radiological assessment post-therapy and detect...
title: Bariatric surgery in the radiology of this century, normal postsurgical changes and usual complications.
Creators: name: HERRERA ROMERO, EDUARDO GERMÁN
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Eating disorders
subject: Contrast agent-oral
subject: CT
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To expose the different surgical techniques performed in bariatric surgery. Acquire basic knowledge of the surgical technique of laparoscopic gastric bypass and its correlation with the usual postoperative changes. To explain the different...
The gradient flow of the Dirac spectrum
Creators: name: Christensen, Alexander S.
name: Splittorff, K.
name: Verbaarschot, J. J. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We construct chiral perturbation theory for the gradient flow of the microscopic Dirac eigenvalues and compute the density of and correlations between the microscopic eigenvalues at zero and non-zero flow time. The results show that the repulsion of the microscopic Dirac eigenvalues from the dynamical quark mass decreases with increasing gradient flow time. Furthermore, the flow of the spectral resolvent is compared to the flow of the chiral condensate obtained from a fermionic gradient flow.
description: 24 pages, 3 figures
title: Renal interlobar arteries resistive index correlation with kidney features
Creators: name: Mereu, Alessio
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Abdomen
subject: Vascular
subject: Arteries / Aorta
subject: Ultrasound
subject: Ultrasound-Power Doppler
subject: Ultrasound-Spectral Doppler
subject: Diagnostic procedure

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To analyze through abdominal US whether there is a correlation between interlobar arteries resistive index (RI) in kidneys and their main features such as longitudinal size, parenchymal echogenicity and...
On the exact discretization of the classical harmonic oscillator equation
Creators: name: Cieslinski, Jan L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Numerical Analysis (math.NA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: G.1.7

description: We discuss the exact discretization of the classical harmonic oscillator equation (including the inhomogeneous case and multidimensional generalizations) with a special stress on the energy integral. We present and suggest some numerical applications.
description: 29 pages
title: Effectiveness of a simple educational programme in improving the quality of radiological requests at a tertiary teaching hospital
Creators: name: ahmed, gasim
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Education and training
subject: Education
subject: Experimental
subject: Emergency

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Incompletely filled radiology request forms are a common problem and may delay investigation and appropriate patient management. All radiology request forms should contain adequate clinical data in the form of relevent history, clinical signs and an...
Fingering convection induced by atomic diffusion in stars: 3D numerical computations and applications to stellar models
Creators: name: Zemskova, Varvara
name: Garaud, Pascale
name: Deal, Morgan
name: Vauclair, Sylvie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Iron-rich layers are known to form in the stellar subsurface through a combination of gravitational settling and radiative levitation. Their presence, nature and detailed structure can affect the excitation process of various stellar pulsation modes, and must therefore be modeled carefully in order to better interpret Kepler asteroseismic data. In this paper, we study the interplay between atomic diffusion and fingering convection in A-type stars, and its role in the establishment and evolution of iron accumulation layers. To do so, we use a combination of three-dimensional idealized numerical simulations of fingering convection, and one-dimensional realistic stellar models. Using the three-dimensional simulations, we first validate the mixing prescription for fingering convection recently proposed by Brown et al. (2013), and identify what system parameters (total mass of iron, iron diffusivity, thermal diffusivity, etc.) play a role in the overall evolution of the layer. We then implement the Brown et al. (2013) prescription in the Toulouse-Geneva Evolution code to study the evolution of the iron abundance profile beneath the stellar surface. We find, as first discussed by Théado et al. (2009), that when the concurrent settling of helium is ignored, this accumulation rapidly causes an inversion in the mean molecular weight profile, which then drives fingering convection. The latter mixes iron with the surrounding material very efficiently, and the resulting iron layer is very weak. However, taking helium settling into account partially stabilizes the iron profile against fingering convection, and a large iron overabundance can accumulate. The opacity also increases significantly as a result, and in some cases ultimately triggers dynamical convection.
description: 38 pages, 16 figures, submitted to ApJ
Extraction of polygenetic natural dyes from Cordyline fruticosa & Mussaenda erythrophylla for textile substrates
Creators: name: Manicketh, Tintu Jose
name: Francis, Mannancheril Sebastian
name: Joseph, Geo
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: In the present study, cotton, silk and polyester yarns were dyed with the aqueous extracts of natural dyes from the pink leaves of Cordyline fruticosa and red sepals of Mussaenda erythrophylla. The dyeing was performed with mordants (Alum, Acetic acid, Copper sulphate and Lemon juice) and without mordant. UV-visible spectral analysis of natural dyes was determined. The selected dyed samples were assessed in terms of dye absorption percentage (E%), colour values (CIELAB), colour strength (K/S) and fastness properties. Various shades of ash-green and pink colours were obtained from the aqueous extracts of C. fruticosa leaves and M. erythrophylla sepals. Fastness results showed good to very good grades. It was observed that multiple colours were produced with different mordants from a single source; therefore, the dyes extracted from the above plants are polygenetic in nature.
title: Efficacy of PET/CT in planning of percutaneous guided CT bone biopsy
Creators: name: Parodi, Maria
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Bones
subject: Interventional non-vascular
subject: Molecular imaging
subject: PET-CT
subject: Percutaneous
subject: CT
subject: Biopsy
subject: Molecular imaging
subject: Staging
subject: Cancer
subject: Metastases
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Adequate disease staging and restaging of cancer patients is crucial to plan the best course of treatment. The diagnostic effectiveness of positron emission tomography with18-fluorine-2-deoxyglucose( 18 F-FDG) integrated with computed tomography for...
MPEC 2023-R21 : 2023 RE
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RE

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Hyperscaling relation between the interfacial tension of liquids and their correlation length near the critical point
Creators: name: Mayoral, E.
name: Goicochea, A. Gama
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Interfaces involving coexisting phases in condensed matter are essential in various examples of soft matter phenomena such as wetting, nucleation, morphology, phase separation kinetics, membranes, phase coexistence in nanomaterials, etc. Most analytical theories available use concepts derived from mean field theory which does not describe adequately these systems. Satisfactory numerical simulations for interfaces at atomistic to mesoscopic scales remains a challenge. In the present work, the interfacial tension between mixtures of organic solvents and water is obtained from mesoscopic computer simulations. The temperature dependence of the interfacial tension is found to obey a scaling law with an average critical exponent mu = 1.23. Additionally, we calculate the evolution of the correlation length, defined as the thickness of the interface between the immiscible fluids, as a function of temperature and find that it obeys also a scaling law with the average critical exponent being nu = 0.67. Lastly, we show that the comparison of mu and nu for these binary mixtures constitutes the first test of Widom hyperscaling relation between these exponents in 3d, expressed as mu = nu (d - 1). Based on these values and those for the 3d Ising model it is argued that both systems belong to the same universality class, which opens up the way for the calculation of new scaling exponents.
description: 13 pages, 4 figures, to appear in Soft Matter, 2014
Bullous Pemphigoid in Patients Receiving Immune Checkpoint Inhibitors and Psoriatic Patients — Focus on Clinical and Histopathological Variation
Creators: name: Niebel, Dennis
name: Wilsmann-Theis, Dagmar
name: Bieber, Thomas
name: Berneburg, Mark
name: Wenzel, Joerg
name: Braegelmann, Christine
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: pemphigoid; bullous; skin diseases; vesiculobullous; psoriasis; programmed cell death 1 receptor; immune checkpoint inhibitors
subject: 610 Medizin

description: Background: The most common autoimmune blistering disease, bullous pemphigoid (BP), shows an increased prevalence in psoriatic patients and oncologic patients undergoing immune-checkpoint blockade (ICB). Even though the same autoantigens (BP180/BP230) are detectable, it remains obscure whether clinical or histopathological differences exist between these different groups of BP patients. In this study, we strived to analyze this matter based on own data and previously published reports. Methods: We performed an institutional chart review from 2010–2020 to identify BP patients with psoriasis (n = 6) or underlying ICB (n = 4) and matched them with idiopathic cases of BP (n = 33). We compared clinical characteristics, subtypes, and dermatopathological determinants (e.g., tissue eosinophilia/neutrophilia, papillary edema, lymphocytic infiltration) among the groups. Results: ICB-associated BP affects men more often and might show mucosal involvement more frequently. We found no statistically significant dermatopathological differences among the groups. Conclusions: Clinicians should be aware of an increased risk of BP in patients with psoriasis and oncologic patients receiving ICB; atypical pruritic skin lesions should prompt a workup including a skin biopsy for histopathology and direct immunofluorescence in these patients. Larger studies might be necessary to detect slight dermatopathological variation.
title: MR enterography-our experience. Is it the future ?
Creators: name: Oliveira, Carlos
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Abdomen
subject: Gastrointestinal tract
subject: MR
subject: Diagnostic procedure
subject: Pathology

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Review our experience using enterography study (MRE) in patients with Crohn disease (CD). Make a brief review of the literature regarding the most common findings and MRE other...
Properties of linear integral equations related to the six-vertex model with disorder parameter
Creators: name: Boos, Hermann
name: Göhmann, Frank
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: One of the key steps in recent work on the correlation functions of the XXZ chain was to regularize the underlying six-vertex model by a disorder parameter $α$. For the regularized model it was shown that all static correlation functions are polynomials in only two functions. It was further shown that these two functions can be written as contour integrals involving the solutions of a certain type of linear and non-linear integral equations. The linear integral equations depend parametrically on $α$ and generalize linear integral equations known from the study of the bulk thermodynamic properties of the model. In this note we consider the generalized dressed charge and a generalized magnetization density. We express the generalized dressed charge as a linear combination of two quotients of $Q$-functions, the solutions of Baxter's $t$-$Q$-equation. With this result we give a new proof of a lemma on the asymptotics of the generalized magnetization density as a function of the spectral parameter.
description: 10 pages, latex, needs ws-procs9x6.cls, dedicated to Prof. Tetsuji Miwa on the occasion of his 60th birthday; v2 minor corrections; v3 fonts replaced
Chemovariations in Hypenia essential oils under infrageneric and phenological influences
Creators: name: de Jesus, Camila Fernandes
name: Faria, Maria Tereza
name: Ferreira, Heleno Dias
name: Ferri, Pedro Henrique
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Inorganic Chemistry

description: The essential oils (EOs) of six Hypenia species that are endemic in the central Brazilian Cerrado were assessed by GC/MS and chemometric analysis. EO variations according to two taxonomic sections, combined with two phenophases (vegetative and reproductive), showed that 23.2% of total variance was explained by such predictors. Variation partitioning showed that the largest pure contribution was attributed to section (43.7%), followed by phenophase (39.3%), with 17% of joint influence. A multivariate regression tree (MRT) indicated that 13 EO constituents may be potential chemomarkers for distinguishing sections and two developmental stages in the genus.
title: Can MRI predict complete pathologic response after neoadjuvant chemotherapy in triple negative breast cancer?
Creators: name: Negrao, Erika
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Oncology
subject: MR
subject: Biopsy
subject: Cancer
subject: Multidisciplinary cancer care
subject: Pathology

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Breast cancer is classified into molecular subtypes, which differ in clinical presentation, response to treatment and survival. Triple-negative breast cancer (TNBC) is defined by the lack of expression of estrogen, progesterone and human epidermal...
Magnetothermopower of $δ$-doped LaTiO$_3$/SrTiO$_3$ interfaces in the Kondo regime
Creators: name: Das, Shubhankar
name: Joshi, P. C.
name: Rastogi, A.
name: Hossain, Z.
name: Budhani, R. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Measurements of magneto-thermopower (S(H, T)) of interfacial delta doped LaTiO$_3$/SrTiO$_3$ (LTO/STO) heterostructure by an iso-structural antiferromagnetic perovskite LaCrO$_3$ are reported. The thermoelectric power of the pure LTO/STO interface at 300 K is $\approx$ 118 $μ$V/K, but increases dramatically on $δ$-doping. The observed linear temperature dependence of S(T) over the temperature range 100 K to 300 K is in agreement with the theory of diffusion thermopower of a two-dimensional electron gas. The S(T) displays a distinct enhancement in the temperature range (T $
description: 6 pages, 4 figures, Accepted in Phys. Rev. B
title: Radiological findings of the postoperative cranium
Creators: name: Zuñiga, Natalia
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Neuroradiology brain
subject: CT
subject: MR
subject: Complications
subject: Education
subject: Surgery
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To familiarize with the radiological findings of the most frequent neurosurgical techniques, and describe the imaging findings of complications of the postoperative cranium. To recognize the imaging findings of the life threatening conditions in the...
Genome-wide expression changes induced by bisphenol A, F and S in human stem cell derived hepatocyte-like cells
Creators: name: Lucendo-Villarin, B.
name: Nell, P.
name: Hellwig, B.
name: Filis, P.
name: Feuerborn, D.
name: O'Shaughnessy, P.J.
name: Godoy, P.
name: Rahnenführer, J.
name: Hengstler, J.G.
name: Cherianidou, A.
name: Sachinidis, A.
name: Fowler, P.A.
name: Hay, D.C.
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2020
Subjects: bisphenol A
bisphenol F
bisphenol S
pluripotent stem cell
liver
hepatocyte-like cells

description: The debate about possible adverse effects of bisphenol A (BPA) has been ongoing for decades. Bisphenol F (BPF) and S (BPS) have been suggested as “safer” alternatives. In the present study we used hepatocyte-like cells (HLCs) derived from the human embryonic stem cell lines Man12 and H9 to compare the three bisphenol derivatives. Stem cell-derived progenitors were produced using an established system and were exposed to BPA, BPF and BPS for 8 days during their transition to HLCs. Subsequently, we examined cell viability, inhibition of cytochrome P450 (CYP) activity, and genome-wide RNA profiles. Sub-cytotoxic, inhibitory concentrations (IC50) of CYP3A were 20, 9.5 and 25 µM for BPA, BPF and BPS in Man12 derived HLCs, respectively. The corresponding concentrations for H9-derived HLCs were 19, 29 and 31 µM. These IC50 concentrations were used to study global expression changes in this in vitro study and are higher than unconjugated BPA in serum of the general population. A large overlap of up- as well as downregulated genes induced by the three bisphenol derivatives was seen. This is at least 28-fold higher compared to randomly expected gene expression changes. Moreover, highly significant correlations of expression changes induced by the three bisphenol derivatives were obtained in pairwise comparisons. Dysregulated genes were associated with reduced metabolic function, cellular differentiation, embryonic development, cell survival and apoptosis. In conclusion, no major differences in cytochrome inhibitory activities of BPA, BPF and BPS were observed and gene expression changes showed a high degree of similarity.
description: EXCLI Journal; 19:Doc1459; ISSN 1611-2156
New definitions of exponential, hyperbolic and trigonometric functions on time scales
Creators: name: Cieslinski, Jan L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33B10, 26E70, 34N05, 65L12

description: We propose two new definitions of the exponential function on time scales. The first definition is based on the Cayley transformation while the second one is a natural extension of exact discretizations. Our eponential functions map the imaginary axis into the unit circle. Therefore, it is possible to define hyperbolic and trigonometric functions on time scales in a standard way. The resulting functions preserve most of the qualitative properties of the corresponding continuous functions. In particular, Pythagorean trigonometric identities hold exactly on any time scale. Dynamic equations satisfied by Cayley-motivated functions have a natural similarity to the corresponding diferential equations. The exact discretization is less convenient as far as dynamic equations and differentiation is concerned.
description: 27 pages
Large-scale BN tunnel barriers for graphene spintronics
Creators: name: Fu, Wangyang
name: Makk, Péter
name: Maurand, Romain
name: Bräuninger, Matthias
name: Schönenberger, Christian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have fabricated graphene spin-valve devices utilizing scalable materials made from chemical vapor deposition (CVD). Both the spin-transporting graphene and the tunnel barrier material are CVD-grown. The tunnel barrier is realized by h-BN, used either as a monolayer or bilayer and placed over the graphene. Spin transport experiments were performed using ferromagnetic contacts deposited onto the barrier. We find that spin injection is still greatly suppressed in devices with a monolayer tunneling barrier due to resistance mismatch. This is, however, not the case for devices with bilayer barriers. For those devices, a spin relaxation time of 260 ps intrinsic to the CVD graphene material is deduced. This time scale is comparable to those reported for exfoliated graphene, suggesting that this CVD approach is promising for spintronic applications which require scalable materials.
description: 13 pages, 3 figures
title: Can we really call it lithiasis? A young radiologist guide
Creators: name: Oliveira, Carlos
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Pathology
subject: Diagnostic procedure
subject: CT
subject: Genital / Reproductive system male
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Provide a guide for the young radiologist ( UL) in urolithiasis...
Bootstrapping line defects with $O(2)$ global symmetry
Creators: name: Gimenez-Grau, Aleix
name: Lauria, Edoardo
name: Liendo, Pedro
name: van Vliet, Philine
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: symmetry, global
field theory, conformal
defect
bootstrap
magnetic field
monodromy
O(2)
capture
correlation function
numerical calculations

description: We use the numerical bootstrap to study conformal line defects with $O(2)$ global symmetry. Our results are very general and capture in particular line defects originating from bulk CFTs with a global symmetry, which can either be preserved or partially broken by the presence of the defect. We begin with an agnostic approach and perform a systematic bootstrap study of correlation functions between two canonical operators on the defect: the displacement and the tilt. We then focus on two interesting theories: a monodromy line defect and a localized magnetic field line defect. To this end, we combine the numerical bootstrap with the $\varepsilon$-expansion, where we complement existing results in the literature with additional calculations. For the monodromy defect our numerical results are consistent with expectations, with known analytic solutions sitting inside our numerical bounds. For the localized magnetic field line defect our plots show a series of intriguing cusps which we explore.
3-aryl-indolinones derivatives as antiplasmodial agents: synthesis, biological activity and computational analysis
Creators: name: Luczywo, Ayelen
name: González, Lucía G.
name: Aguiar, Anna C. C.
name: de Souza, Juliana Oliveira
name: Souza, Guilherme E.
name: Oliva, Glaucius
name: Aguilar, Luis F.
name: Casal, Juan J.
name: Guido, Rafael V. C.
name: Asís, Silvia E.
name: Mellado, Marco
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Malaria is an infectious illness, affecting vulnerable populations in Third World countries. Inspired by natural products, indole alkaloids have been used as a nucleus to design new antimalarial drugs. So, eighteen oxindole derivatives, aza analogues were obtained with moderate to excellent yields. Also, the saturated derivatives of oxindole and aza derivatives via H2/Pd/C reduction were obtained in good yields, leading to racemic mixtures of each compound. Next, the inhibitory activity against P. falciparum of 18 compounds were tested, founding six compounds with IC50 < 20 µM. The most active of these compounds was 8c; however, their unsaturated derivative 7c was inactive. Then, a structure-activity relationship analysis was done, founding that focused LUMO lobe on the specific molecular zone is related to inhibitory activity against P. falciparum. Finally, we found a potential inhibition of lactate dehydrogenase by oxindole derivatives, using molecular docking virtual screening.
Stealing and Evading Malware Classifiers and Antivirus at Low False Positive Conditions
Creators: name: Rigaki, Maria
name: Garcia, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Model stealing attacks have been successfully used in many machine learning domains, but there is little understanding of how these attacks work against models that perform malware detection. Malware detection and, in general, security domains have unique conditions. In particular, there are very strong requirements for low false positive rates (FPR). Antivirus products (AVs) that use machine learning are very complex systems to steal, malware binaries continually change, and the whole environment is adversarial by nature. This study evaluates active learning model stealing attacks against publicly available stand-alone machine learning malware classifiers and also against antivirus products. The study proposes a new neural network architecture for surrogate models (dualFFNN) and a new model stealing attack that combines transfer and active learning for surrogate creation (FFNN-TL). We achieved good surrogates of the stand-alone classifiers with up to 99\% agreement with the target models, using less than 4% of the original training dataset. Good surrogates of AV systems were also trained with up to 99% agreement and less than 4,000 queries. The study uses the best surrogates to generate adversarial malware to evade the target models, both stand-alone and AVs (with and without an internet connection). Results show that surrogate models can generate adversarial malware that evades the targets but with a lower success rate than directly using the target models to generate adversarial malware. Using surrogates, however, is still a good option since using the AVs for malware generation is highly time-consuming and easily detected when the AVs are connected to the internet.
description: 20 pages, 10 figures, 8 tables. Accepted, please use the DOI/ journal for citations
Threatened Cretan species Chaerophyllum creticum Boiss. & Heldr.: phenolic profile by HPLC-PDA-MS and in vitro antioxidant capacity
Creators: name: Prokopiou, Lydia
name: Halahlah, Abealghani
name: Grigorakis, Spyros
name: Fournaraki, Christini
name: Kokkalou, Eugene
name: Karioti, Anastasia
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: In this study, the chemical content of the threatened Cretan endemic Chaerophyllum creticum Boiss. & Heldr. was investigated by High Performance Liquid chromatography-Photodiode Array-Mass Spectrometry (HPLC-PDA-MS) analysis. Leaves, flowers and stems of C. creticum, were extracted via maceration and were assessed for their polyphenolic composition and antioxidant capacity. The highest extraction yields were achieved by methanol and methanol/water. A total of 17 compounds were characterised in C. creticum with luteolin-7-O-glucoside being the predominant glucoside found in all the extracts. Malonic esters were present in all the extracts. The main flavonoids and phenolics were quantified by HPLC-UV in parallel to standard spectrophotometric assays which were used for the determination of the Total Polyphenol content and the Total Flavonoid Content. The antioxidant activity was assessed by two different tests: 2,2-diphenyl-1-picrylhydrazyl (DPPH•) free radical assay and the ferric reducing antioxidant power (FRAP) assay. This is the first report on the chemical content of the Cretan endemic C. creticum.
Reduced dielectric screening and enhanced energy transfer in single and few-layer MoS2
Creators: name: Prins, Ferry
name: Goodman, Aaron J.
name: Tisdale, William A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report highly efficient non-radiative energy transfer from cadmium selenide (CdSe) quantum dots to monolayer and few-layer molybdenum disulfide (MoS2). The quenching of the donor quantum dot photoluminescence increases as the MoS2 flake thickness decreases, with the highest efficiency (>95%) observed for monolayer MoS2. This counterintuitive result arises from reduced dielectric screening in thin layer semiconductors having unusually large permittivity and a strong in-plane transition dipole moment, as found in MoS2. Excitonic energy transfer between a 0D emitter and a 2D absorber is fundamentally interesting and enables a wide range of applications including broadband optical down-conversion, optical detection, photovoltaic sensitization, and color shifting in light-emitting devices.
description: 14 pages, 4 figures
4-Unit Molar Fixed Partial Dentures Made from Highly Translucent and Multilayer Zirconia Materials: An In Vitro Investigation
Creators: name: Strasser, Thomas
name: Schmid, Alois
name: Huber, Christina
name: Rosentritt, Martin
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: zirconia; multilayer; 3Y-TZP-A; 3Y-TZP; 4Y-TZP; 5Y-TZP; FPD; fracture force; TCML; in vitro
subject: 610 Medizin

description: Background: Modern zirconia blanks for the fabrication of dental CAD/CAM restorations provide a layer structure with color and strength transitions. Variation in the yttria content has a particular effect on the characteristics of the materials. The properties of dental restorations may vary depending on the milling position within the blank. Especially for wide-span fixed partial dentures (FPDs), relevant effects on clinical performance might result. This study investigated if the application of high-translucent zirconia and positioning within multilayer zirconia blanks affect the in vitro performance of 4-unit FPDs. Methods: 4-unit FPDs were fabricated from monolayer 3Y-TZP-A, 3Y-TZP, 4Y-TZP, 5Y-TZP, 4Y/5Y-TZP, and different positions within multilayer zirconia blanks (3Y-TZP/5Y-TZP). The FPDs were adhesively luted to resin abutment teeth, divided into groups (n = 8 each): “baseline” (24 h water-storage)/“TCML” (chewing simulation by means of thermalcycling and mechanical loading), and loaded to fracture. The statistics included mean and standard deviation, one-way ANOVA, Bonferroni post hoc test, and Pearson correlation (α = 0.05). Results: The mean fracture force values varied between 803.8 ± 171.7 N (5Y) and 1474.1 ± 193.0 N (3Y) (baseline) and 713.5 ± 190.9 N (5Y) and 1337.4 ± 205.6 N (3Y) (TCML). Significantly different (p = 0.000) results between the groups and individual significant differences (p ≤ 0.039) were found. Conclusions: Positioning within multilayer blanks affected the fracture force only slightly. Multilayer, 3Y-TZP-A, 3Y-TZP, and 4Y-TZP seem appropriate for the clinical application with 4-unit molar FPDs. Application of 5Y-TZP is critical.
Intermittency and Obsolescence: a Croston Method With Linear Decay
Creators: name: Prestwich, Steven
name: Tarim, Armagan
name: Rossi, Roberto
name: Hnich, Brahim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Only two Croston-style forecasting methods are currently known for handling stochastic intermittent demand with possible demand obsolescence: TSB and HES, both shown to be unbiased. When an item becomes obsolescent then TSB's forecasts decay exponentially, while HES's decay hyperbolically. We describe a third variant called Linear-Exponential Smoothing that is also unbiased, decays linearly to zero in a finite time, is asymptotically the best variant for handling obsolescence, and performs well in experiments.
IPAL: Breaking up Silos of Protocol-dependent and Domain-specific Industrial Intrusion Detection Systems
Creators: name: Wolsing, Konrad
name: Wagner, Eric
name: Saillard, Antoine
name: Henze, Martin
Publisher: name: New York City : Association for Computing Machinery
Year: 2022
Subjects: subject: Industrial Intrusion Detection
subject: IDS
subject: CPS
subject: ICS
subject: Industrial Protocols
subject: Konferenzschrift
subject: 004

description: The increasing interconnection of industrial networks exposes them to an ever-growing risk of cyber attacks. To reveal such attacks early and prevent any damage, industrial intrusion detection searches for anomalies in otherwise predictable communication or process behavior. However, current efforts mostly focus on specific domains and protocols, leading to a research landscape broken up into isolated silos. Thus, existing approaches cannot be applied to other industries that would equally benefit from powerful detection. To better understand this issue, we survey 53 detection systems and find no fundamental reason for their narrow focus. Although they are often coupled to specific industrial protocols in practice, many approaches could generalize to new industrial scenarios in theory. To unlock this potential, we propose IPAL, our industrial protocol abstraction layer, to decouple intrusion detection from domain-specific industrial protocols. After proving IPAL's correctness in a reproducibility study of related work, we showcase its unique benefits by studying the generalizability of existing approaches to new datasets and conclude that they are indeed not restricted to specific domains or protocols and can perform outside their restricted silos.
title: Differential diagnosis of head and neck cystic lesions: A pictorial essay
Creators: name: Leidersnaider, Caio
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Neoplasia
subject: Tissue characterisation
subject: Cysts
subject: Imaging sequences
subject: Image compression
subject: MR
subject: CT
subject: Ultrasound
subject: Anatomy
subject: Head and neck

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To illustrate the main types of cysts affecting the region of the head and neck identified through US, CT, and MRI. To identify the main findings in the image that differentiates benign and malignant cystics...
Some implications of a new definition of the exponential function on time scales
Creators: name: Cieśliński, Jan L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary: 33B10, 26E70. Secondary: 34N05, 65L12

description: We present a new approach to exponential functions on time scales and to timescale analogues of ordinary differential equations. We describe in detail the Cayley-exponential function and associated trigonometric and hyperbolic functions. We show that the Cayley-exponential is related to implicit midpoint and trapezoidal rules, similarly as delta and nabla exponential functions are related to Euler numerical schemes. Extending these results on any Padé approximants, we obtain Padé-exponential functions. Moreover, the exact exponential function on time scales is defined. Finally, we present applications of the Cayley-exponential function in the q-calculus and suggest a general approach to dynamic systems on Lie groups.
description: 12 pages. Presented at 8th AIMS International Conference on Dynamical Systems, Differential Equations and Applications; Dresden, 25-28.05.2010
MPEC 2023-R22 : 2023 QP8
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QP8

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Essence of python programming language in medical image analysis: Enhancing workplace productivity.
Creators: name: Geetha Virupakshappa, SanthoshKumar
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: CAD
subject: Computer applications
subject: Technology assessment
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: A small introduction to Python programming and getting acquainted with basics of programming language Learning basic DICOM operations with Python and how data can be extracted from DICOM files. Getting Introduction to the versatility and simplicity...
Lignan derivatives and a jasmonic acid derivative from the seeds of Orychophragmus violaceus
Creators: name: Sifan, Liu
name: Zanxin, Xu
name: Guangjie, Zhang
name: Junxing, Dong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Plant Biology

description: A new lignan derivative, 11-deoxykompasinol A (1), together with six known compounds, including five lignan glycosides (2–6) and a jasmonic acid derivative (7), were isolated from the seeds of Orychophragmus violaceus. Structure of the new compound was elucidated on the basis of extensive spectroscopic techniques and ECD (electronic circular dichroism calculations). Since most komasinol derivatives were isolated as racemate, the absolute configuration of this type of compound was reported for the first time. The known compounds were identified by comparison with data reported in the literature. All compounds were tested for their cytotoxic activities against the Hela and HepG2 cell lines in vitro. The new compound 1 exhibited obvious cytotoxicity against the two cell lines with IC50 values of 9.43 and 18.26 μM, respectively. Compounds 2, 5, and 7 were found to possess moderate cytotoxicity against the above cell lines.
title: Magnetic Resonance Imaging of Facial Fillers
Creators: name: Alsarraf, Lamya
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Infection
subject: Abscess
subject: Diagnostic procedure
subject: MR
subject: Head and neck

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the MR findings related to facial cosmetic fillers as well as some of the possible...
Vulnerance of Pastoral Care
Creators: name: Leimgruber, Ute
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: sexual and spiritual violence; abuse of adults; clergy abuse; violence against women in church; pastoral care; vulnerability; vulnerance; professional sexual misconduct (PSM)
subject: 230 Theologie, Christentum

description: Disproving assumptions to the contrary, this article clearly shows how and why adults can become victims of abuse in church contexts. It does this by focusing on the pastoral care context and the interdependent potential risk factors lying within. As previous studies suggest, this context is especially susceptible to perpetrating abuse. Approximately three-quarters of all cases of abuse occur or begin in the context of pastoral care or spiritual counseling. Often, theories of pastoral care do not address this danger and tend to idealize the practice of pastoral care. In contrast, it is necessary to recognize a specific power to victimize due to the theological and structural power differential in pastoral relationships. Therefore, this article proposes a complex understanding of “vulnerability” and “vulnerance” that accounts for the victimization potential inherent in all pastoral care settings and advocates a theory of pastoral care that is not only concerned with the individual but also incorporates reflections on structural and systemic power dynamics.
No Country for Old Wo*Men? Michael Wolffs vergleichende Untersuchung zum normativen Anspruch und zur empirischen Wirklichkeit der Teilhabe älterer Menschen in drei Wohlfahrtsstaaten
Creators: name: Ellerich-Groppe, Niklas
Publisher: name: Ethik und Gesellschaft
Year: 2023

description: Rezension von: Michael Wolff (2021): Soziale Teilhabe von älteren Menschen. Empirischer Vergleich und sozialethische Reflexion dreier Wohlfahrtsstaaten, Baden-Baden: Nomos. 321 S., ISBN 978-3-8487-8248-2, EUR 64,00.
description: Ethik und Gesellschaft, Nr. 1 (2022): Wohnvermögen
Nonlinear lattice waves in heterogeneous media
Creators: name: Laptyeva, T. V.
name: Ivanchenko, M. V.
name: Flach, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We review recent progress in the dynamics of nonlinear lattice waves in heterogeneous media, which enforce complete wave localization in the linear wave equation limit, especially Anderson localization for random potentials, and Aubry-Andre localization for quasiperiodic potentials. Additional nonlinear terms in the wave equations can either preserve the phase-coherent localization of waves, or destroy it through nonintegrability and deterministic chaos. Spreading wave packets are observed to show universal features in their dynamics which are related to properties of nonlinear diffusion equations.
description: 62 pages, 25 figures. arXiv admin note: text overlap with arXiv:1405.1122