cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cassane diterpenoids from Caesalpinia pulcherrima and their anti-inflammatory and α-glycosidase inhibitory activities
Creators: name: Yun, Xin
name: Chen, Xiu-Mei
name: Wang, Jia-Yun
name: Lu, Wang
name: Zhang, Zi-Han
name: Kim, Young Ho
name: Zong, Shi-Chun
name: Li, Chun-Huan
name: Gao, Jin-Ming
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: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 60506 Virology

description: Three undescribed cassane-type diterpenoids (CAs), caesalpulcherrins K-M (1–3), together with three known ones (4–6) were isolated from the aerial parts of Caesalpinia pulcherrima (L.) Sw (Fabaceae). Their structures were elucidated via analysis of NMR (1 D and 2 D) and HRESIMS data. The character for caesalpulcherrin K possessing the olefin bond at C-11 and C-12 in its cassane skeleton was observed, which belonged to a small group among more than 450 CAs. That is, only fifteen derivatives have been reported up to now, to our knowledge. Biological evaluation revealed that compounds 1–6 exhibited moderate anti-inflammatory activity, with an IC50 value from 6.04 ± 0.34 to 8.92 ± 0.65 μM. Furthermore, compounds 5 and 6 exhibited significant α-glucosidase inhibitory activity at 10 μM.
title: Should all patients receive MRCP who present with upper abdominal pain?
Creators: name: Vandiyil, Smitha
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Ultrasound
subject: Gastrointestinal tract
subject: Biliary Tract / Gallbladder
subject: Abdomen
subject: Comparative studies
subject: Quality assurance
subject: MR-Cholangiography

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Clinicians are frequently requesting Magnetic Resonance Cholangiopancreatography (MRCP) in addition to ultrasound (USS) to exclude ductal stones in patients presenting with upper abdominal pain or abnormal liver function tests (LFTs). The aim of...
Introduction: Updating Discourse/s on Method/s
Creators: name: Abbamonte, Lucia
name: Cavaliere, Flavia
name: Musolff, Andreas
Publisher: name: mediAzioni
Year: 2022

description: This special issue Updating Discourse/s on Method/s aims to reconsider a number of methods and approaches with their theoretical grounding, functioning, socio-political implications and potential for cross-fertilization of ideas. The contributions explore key contemporary concerns in the domain of research and language teaching and have been grouped into two main sections, discourse analysis and translation studies, the latter of which also features a study dedicated to the impact of blended (or entirely computer-based) teaching models and social media applications on English Language Teaching.
description: mediAzioni, Vol. 34 (2022): Updating Discourse/s on Method/s
Chasing the spin gap through the phase diagram of a frustrated Mott insulator
Creators: name: Pustogow, A.
name: Kawasugi, Y.
name: Sakurakoji, H.
name: Tajima, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The quest for entangled spin excitations has stimulated intense research on frustrated magnetic systems. For almost two decades, the triangular-lattice Mott insulator $κ$-(BEDT-TTF)$_2$Cu$_2$(CN)$_3$ has been the hottest candidate for a $gapless$ quantum spin liquid with itinerant spinons. Very recently, however, this scenario was overturned as electron-spin-resonance (ESR) studies unveiled a spin gap, calling for reevaluation of the magnetic ground state. Here we achieve a precise mapping of this spin-gapped phase through the Mott transition by ultrahigh-resolution strain tuning. Our transport experiments reveal a reentrance of charge localization below $T^{\star}=6$ K associated with a gap size of 30-50 K. The negative slope of the insulator-metal boundary, $dT^{\star}/dp<0$, evidences the low-entropy nature of the spin-singlet ground state. By tuning the enigmatic '6 K anomaly' through the phase diagram of $κ$-(BEDT-TTF)$_2$Cu$_2$(CN)$_3$, we identify it as the transition to a valence-bond-solid phase, with typical magnetic and structural fingerprints, that persists at $T\rightarrow 0$ until unconventional superconductivity and metallic transport proliferate.
description: 7 pages total, 4 pages main text, 4 figures
A Fourier Transformed Bremsstrahlung Flash Model for the Production of X-Ray Time Lags in Accreting Black Hole Sources
Creators: name: Kroon, John J.
name: Becker, Peter A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Accreting black hole sources show a wide variety of rapid time variability, including the manifestation of time lags during X-ray transients, in which a delay (phase shift) is observed between the Fourier components of the hard and soft spectra. Despite a large body of observational evidence for time lags, no fundamental physical explanation for the origin of this phenomenon has been presented. We develop a new theoretical model for the production of X-ray time lags based on an exact analytical solution for the Fourier transform describing the diffusion and Comptonization of seed photons propagating through a spherical corona. The resulting Green's function can be convolved with any source distribution to compute the associated Fourier transform and time lags, hence allowing us to explore a wide variety of injection scenarios. We show that thermal Comptonization is able to self-consistently explain both the X-ray time lags and the steady-state (quiescent) X-ray spectrum observed in the low-hard state of Cyg X-1. The reprocessing of bremsstrahlung seed photons produces X-ray time lags that diminish with increasing Fourier frequency, in agreement with the observations for a wide range of sources.
Automated Shape and Process Parameter Optimization for Scaling Up Geometrically Non-Similar Bioreactors
Creators: name: Seidel, Stefan
name: Mozaffari, Fruhar
name: Maschke, Rüdiger W.
name: Kraume, Matthias
name: Eibl-Schindler, Regine
name: Eibl, Dieter
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::660 Chemische Verfahrenstechnik::660 Chemische Verfahrenstechnik
subject: biochemical engineering
subject: computational fluid dynamics
subject: energy dissipation rate
subject: HEK293
subject: hydrodynamic stress
subject: Kolmogorov length scale
subject: open-source
subject: optimization
subject: scale-up
subject: CFD

description: Scaling bioprocesses remains a major challenge. Since it is physically impossible to increase all process parameters equally, a suitable scale-up strategy must be selected for a successful bioprocess. One of the most widely used criteria when scaling up bioprocesses is the specific power input. However, this represents only an average value. This study aims to determine the Kolmogorov length scale distribution by means of computational fluid dynamics (CFD) and to use it as an alternative scale-up criterion for geometrically non-similar bioreactors for the first time. In order to obtain a comparable Kolmogorov length scale distribution, an automated geometry and process parameter optimization was carried out using the open-source tools OpenFOAM and DAKOTA. The Kolmogorov–Smirnov test statistic was used for optimization. A HEK293-F cell expansion (batch mode) from benchtop (Infors Minifors 2 with 4 L working volume) to pilot scale (D-DCU from Sartorius with 30 L working volume) was carried out. As a reference cultivation, the classical scale-up approach with constant specific power input (233 W m−3) was used, where a maximum viable cell density (VCDmax) of 5.02 · 106 cells mL−1 was achieved (VCDmax at laboratory scale 5.77 · 106 cells mL−1). Through the automated optimization of the stirrer geometry (three parameters), position and speed, comparable cultivation results were achieved as in the small scale with a maximum VCD of 5.60 · 106 cells mL−1. In addition, even on the pilot scale, cell aggregate size distribution was seen to strictly follow a geometric distribution and can be predicted with the help of CFD with the previously published correlation.
title: Congenital biliary tract disease.
Creators: name: Villota Delgado, Vania
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: MR
subject: Liver
subject: Biliary Tract / Gallbladder
subject: Abdomen
subject: Education
subject: Congenital
subject: Genetic defects
subject: MR-Cholangiography

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Review the embriology and anatomy of the biliary tree. Describethe most frecuent anatomical variant. Identify ductal plate diseases. Review choledochal cyst classification. Recognize ultrasound and MR findings in biliary...
Phase-noise protection in quantum-enhanced differential interferometry
Creators: name: Landini, M.
name: Fattori, M.
name: Pezze, L.
name: Smerzi, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Differential interferometry (DI) with two coupled sensors is a most powerful approach for precision measurements in presence of strong phase noise. However DI has been studied and implemented only with classical resources. Here we generalize the theory of differential interferometry to the case of entangled probe states. We demonstrate that, for perfectly correlated interferometers and in the presence of arbitrary large phase noise, sub-shot noise sensitivities -- up to the Heisenberg limit -- are still possible with a special class of entangled states in the ideal lossless scenario. These states belong to a decoherence free subspace where entanglement is passively protected. Our work pave the way to the full exploitation of entanglement in precision measurements in presence of strong phase noise.
description: 18 pages, 5 figures, remarks and comments are welcome
title: Isometry Invariants of Crystal Structures Based on Voronoi Domains and Interatomic Distances
Creators: name: Mosca, Marco Michele
Publisher: name: University of Liverpool Repository
Year: 2022

description: The need for comparison methods between crystal structures led the research to look for proper descriptors that could encode the chemical properties of different materials. Many crystal structures exist in theory, but only some of them may be synthesized in a laboratory and used in the real world for practical applications. To discover new materials, Crystal Structure Prediction is vital in predicting various crystal structure forms or generating new ones by building blocks or molecules. Usually, a structure prediction computes chemical features that are not correct properties because they do not consider the entire 3-dimensional structure of a crystal. However, they rely on rules considering only the type of particles involved. For example, some chemical properties are used frequently to select a good candidate for synthesis because, in theory, they could tell if a crystal may exist in its solid form under some environmental conditions. This thesis project aims to design and develop new geometric tools or properties that can properly distinguish 3-dimensional structures starting from the raw atom coordinates. The Geometric features developed in this document are fast properties or numerical characteristics that map crystal structure to a different space for a more reliable and efficient comparison. Firstly, we solved the comparison problem between crystal lattices by designing a property that maps a crystal lattice to the space of polyhedra and a metric that can distinguish them. Secondly, we designed a new and faster geometric property that relies on vectors of interatomic distances that are proved to change continuously under atom perturbations. Finally, the chemical property prediction was addressed in our last work, where we attempted to predict the chemical properties of crystals by using our geometric features.
Relación entre el Índice Neutrófilo/Linfocito y la evolución de los pacientes con apendicitis aguda. Servicio de Cirugía II. Complejo Hospitalario Universitario Ruiz y Páez. Ciudad Bolívar.
Creators: name: Velasquez, Marcos
name: Rivas, Rocio
Publisher: name: figshare
Year: 2022
Subjects: subject: Biomarkers
subject: 110305 Emergency Medicine
subject: FOS: Clinical medicine
subject: 110323 Surgery

description: La apendicitis aguda constituye la condición inflamatoria aguda abdominal más frecuente que requiere tratamiento quirúrgico de urgencia. Por esta razón, la apendicectomía representa la intervención quirúrgica que con mayor frecuencia se realiza en un servicio de urgencias quirúrgicas de cualquier hospital general a nivel mundial. El objetivo del trabajo fue Determinar la relación entre el Índice Neutrófilo/Linfocito y la evolución de los pacientes con apendicitis aguda en el servicio de Cirugía II del Complejo Hospitalario Universitario Ruiz y Páez entre junio 2019- enero 2020. La muestra estuvo conformada por 58 pacientes atendidos en el Servicios de Cirugía II del Hospital Universitario Ruiz y Páez, Estado Bolívar, durante el periodo comprendido entre junio de 2019 – enero de 2020. Se procedió a construir una curva ROC para determinar el mejor punto de corte del INL con la finalidad de relacionarlo con los otros datos obtenidos, obteniendo 4,25 como mejor punto de corte. De los 58 pacientes, el 63,79% (n=37) fueron del sexo femenino y el otro 36,21% (n=21) del sexo masculino. En cuanto al sexo y el promedio del INL se observó que el sexo masculino tuvo el índice más elevado con 6,88 mientras que el sexo femenino tuvo 3,90. Al comparar el tiempo de evolución al momento del ingreso y el promedio del INL se evidenció que aquellos con más de 48 horas de evolución (n=6; 10,35%) presentaron el INL más alto con 6,15. Respecto a los hallazgos quirúrgicos y el promedio INL, aquellas que tuvieron un INL más alto fueron gangrenosas (n=19; 32,76%) y perforadas (n=6; 10,34%) con valores de 7,02 y 9,20 respectivamente. Respecto a la estancia hospitalaria y el promedio INL, aquellos que permanecieron 5 días o más (n=23; 39,66%) en el servicio presentaron un INL de 7,48, en segundo lugar, aquellos que estuvieron de dos a cinco días (n=3; 5,17%) con un INL de 4,91 y, por último, aquellos cuya estancia fue menor a dos (n= 32; 55,17%) con un INL de 3,17. Por lo evidenciado anteriormente, se puede confirmar que el índice Neutrófilo/Linfocito es un marcador confiable, que nos orienta respecto a la evolución con la que puede cursar determinado paciente diagnosticado con apendicitis aguda.
New cytotoxic chalcone derivatives from Astragalus ponticus Pall.
Creators: name: Koldas, Serkan
name: Demirtas, Ibrahim
name: Mutlu, Dogukan
name: Atalar, Mehmet Nuri
name: Ünver, Hakan
name: Arslan, Şevki
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
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

description: Astragalus ponticus Pall. species was investigated for its antiproliferative effects on HeLa cells. Two new chalcones (B5 and B8) along with eight known compounds (B1, B2, B3, B6, B7, B10, B14 and B15) were isolated by following bioactivity guided isolation methods. In addition, from non-active fraction, three cycloartane glycosides (B11, B12 and B13) were isolated. Molecular structures of these isolated compounds were revealed by using spectroscopic methods like MS, 1D and 2D NMR and a single crystal X-ray diffraction analysis. New compounds B5 and B8 showed the highest antiproliferative activities against HeLa cells (IC50 values of 36.6 and 20.6 µM, respectively) while the rest showed high and low activities. Non-endemic species attract relatively low attention from the scientific community but this study demonstrates that valuable new compounds, which might be used as ingredients in medicinal preparations, can be obtained from these materials.
Hybrid approximation approach to generation of atomic squeezing with quantum nondemolition measurements
Creators: name: Ilo-Okeke, Ebubechukwu O.
name: Kondappan, Manikandan
name: Chen, Ping
name: Mao, Yuping
name: Ivannikov, Valentin
name: Byrnes, Tim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze a scheme that uses quantum nondemolition measurements to induce squeezing of a spinor Bose-Einstein condensate in a double well trap. In a previous paper [Ilo-Okeke et al. Phys. Rev. A \textbf{104}, 053324 (2021)], we introduced a model to solve exactly the wavefunction for all atom-light interaction times. Here, we perform approximations for the short interaction time regime, which is relevant for producing squeezing. Our approach uses a Holstein-Primakoff approximation for the atoms while we treat the light variables exactly. It allows us to show that the measurement induces correlations within the condensate, which manifest in the state of the condensate as a superposition of even parity states. In the long interaction time regime, our methods allow us to identify the mechanism for loss of correlation. We derive simple expressions for the variances of atomic spin variables conditioned on the measurement outcome. We find that the results agree with the exact solution in the short interaction time regime. Additionally, we show that the expressions are the sum of the variances of the atoms and the measurement. Beyond the short interaction time regime, our scheme agrees qualitatively with the exact solution for the spin variable that couples to light.
Near-surface InAs 2DEG on a GaAs substrate: characterization and superconducting proximity effect
Creators: name: Sütő, Máté
name: Prok, Tamás
name: Makk, Péter
name: Kirti, Magdhi
name: Biasiol, Giorgio
name: Csonka, Szabolcs
name: Tóvári, Endre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied a near-surface two-dimensional electron gas based on an InAs quantum well on a GaAs substrate. In devices without a dielectric layer we estimated large electron mobilities on the order of $10^5$ cm$^2$/Vs. We have observed quantized conductance in a quantum point contact, and determined the g-factor. Using samples with an epitaxial Al layer, we defined multiple Josephson junctions and found the critical current to be gate tunable. Based on multiple Andreev reflections the semiconductor-superconductor interface is transparent, with an induced gap of 125 $μ$eV. Our results demonstrate the viability of this platform for hybrid topological superconductor devices.
Evaluation of anti-cancer effect of zerumbone and cisplatin on N-nitrosodiethylamine induced hepatic cancer in freshwater fish (Danio rerio)
Creators: name: Devi, Jegannathan Srimathi
name: Haripriya, Dayalan
name: Arul, Santhosh
name: Saravanan, Konda Mani
name: Bupesh, Giridharan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: 60506 Virology

description: Cancer is the uncontrolled proliferation of abnormal cells in the body. There is a foreseeable need for an effective anti-carcinogenic drug. In this regard, zerumbone (ZER) is identified as one such therapeutic herbal compound that has been shown to enhance the anticancer activity of cisplatin (CIS), with negligible side effects. Yet, the fundamental mechanisms of co-treatment of ZER and CIS on Hepatocellular carcinoma remain indefinable. The current study is endeavored to evaluate the anti-cancer effect of the individual and co-treatment of ZER, CIS and its combination on Diethyl nitrosamine induced hepatic cancer in wild-type zebra fish (Danio Rerio) models. Our careful analysis on treated and untreated fishes shows that CIS + ZER combination group restricted further progression of hepatocellular carcinoma cells significantly, which concludes that co-treatment of ZER with CIS was therapeutically effective for treating human HCC cancer cells which were induced into zebra fish.
Forenses et habitatores Arbi: Identitet stranaca i doselje­nika u srednjovjekovlju
Creators: name: Stjepović, Stijepo
Publisher: name: Universita' degli Studi di Salerno
Year: 2018
Subjects: Rab
Anthroponymy
Middle ages
Immigrants
Foreigners

description: The present article’s objective is the research of nominal formulas of immigrants to the commune of Rab and the foreigners who were in a direct or indirect contact with the commune in the second half of the 14th Century according to the data available from the documents written by Nicholas from Bologna and Nicholas from Curtarolo. The data give us an insight into the anthroponymic structure, origin, occupation and family situation of immigrants and foreigners in the medieval Rab.
title: “Breaking Bud”: a new twist to Tree-in-Bud pattern in bronchiolitis
Creators: name: Vicente Zapata, Irene
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Thorax
subject: Lung
subject: CT
subject: Conventional radiography
subject: Diagnostic procedure
subject: Education
subject: Infection
subject: Chronic obstructive airways disease
subject: Inflammation

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Revisit the normal anatomy of the secondary pulmonary lobule Define the term bronchiolitis and recognize the imaging appearance at chest radiography and high resolution CT (HRCT) Describe the classification into either cellular or constrictive types...
Spectral features in isolated neutron stars induced by inhomogeneous surface temperatures
Creators: name: Viganò, Daniele
name: Perna, Rosalba
name: Rea, Nanda
name: Pons, José A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The thermal X-ray spectra of several isolated neutron stars display deviations from a pure blackbody. The accurate physical interpretation of these spectral features bears profound implications for our understanding of the atmospheric composition, magnetic field strength and topology, and equation of state of dense matter. With specific details varying from source to source, common explanations for the features have ranged from atomic transitions in the magnetized atmospheres or condensed surface, to cyclotron lines generated in a hot ionized layer near the surface. Here we quantitatively evaluate the X-ray spectral distortions induced by inhomogeneous temperature distributions of the neutron star surface. To this aim, we explore several surface temperature distributions, we simulate their corresponding general relativistic X-ray spectra (assuming an isotropic, blackbody emission), and fit the latter with a single blackbody model. We find that, in some cases, the presence of a spurious 'spectral line' is required at a high significance level in order to obtain statistically acceptable fits, with central energy and equivalent width similar to the values typically observed. We also perform a fit to a specific object, RX J0806.4-4123, finding several surface temperature distributions able to model the observed spectrum. The explored effect is unlikely to work in all sources with detected lines, but in some cases it can indeed be responsible for the appearance of such lines. Our results enforce the idea that surface temperature anisotropy can be an important factor that should be considered and explored also in combination with more sophisticated emission models like atmospheres.
description: 11 pages, 7 figures; accepted for publication in MNRAS
ASAP: Adaptive Transmission Scheme for Online Processing of Event-based Algorithms
Creators: name: Tapia, Raul
name: Dios, José Ramiro Martínez-de
name: Eguíluz, Augusto Gómez
name: Ollero, Anibal
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Online event-based perception techniques on board robots navigating in complex, unstructured, and dynamic environments can suffer unpredictable changes in the incoming event rates and their processing times, which can cause computational overflow or loss of responsiveness. This paper presents ASAP: a novel event handling framework that dynamically adapts the transmission of events to the processing algorithm, keeping the system responsiveness and preventing overflows. ASAP is composed of two adaptive mechanisms. The first one prevents event processing overflows by discarding an adaptive percentage of the incoming events. The second mechanism dynamically adapts the size of the event packages to reduce the delay between event generation and processing. ASAP has guaranteed convergence and is flexible to the processing algorithm. It has been validated on board a quadrotor and an ornithopter robot in challenging conditions.
title: Physical reservoir computing with dynamical electronics
Creators: name: Liang, Xiangpeng
Publisher: name: University of Glasgow
Year: 2022

description: Since the advent of data-driven society, mass information generated from human activity and the natural environment has been collected, stored, processed, and then dispersed under conventional von Neumann architecture. However, further scaling the computing capability in terms of speed and power efficiency has been significantly slowed down in recent years due to the fundamental limits of transistors. To meet the increasingly demanding requirement for data-intensive computation, neuromorphic computing is a promising field taking the inspiration from the human brain, an extremely efficient biological computer, to develop unconventional computing paradigms for artificial intelligence. Reservoir computing, a recurrent neural network algorithm invented two decades ago, has received wide attention in the field of neuromorphic computing because of its unique recurrent dynamics and hardware-friendly implementation schemes. Under the concept of reservoir computing, hardware’s intrinsic physical behaviours can be explored as computing resources to keep the machine learning within the physical domain to improve processing efficiency, which is also known as physical reservoir computing. This thesis focuses on modelling and implementing physical reservoir computing based on dynamical electronics, along with its applications with sensory signals. First, the fundamental of the reservoir computing algorithm is introduced. Second, based on the reservoir algorithm and its functionalities, two different architectures for physically implementing reservoir computing, delay-based reservoir and parallel devices, are investigated to perform temporal signal processing. Thirdly, an efficient implementation architecture, namely rotating neurons reservoir, is developed. This novel architecture is evaluated in both theoretical analysis and experiments. An electrical prototype of the rotating neurons reservoir exhibits unique advantages such as resource-efficient implementation and low power consumption. More importantly, the theory of rotating neurons reservoir is highly universal, indicating that a rotational object embedded with dynamical elements can act as a reservoir computer.
Dynamical control of engineered stimuli-responsive materials: synthesis and optimization of active micro-vesicles
Creators: name: Miele, Ylenia
Publisher: name: Universita degli studi di Salerno
Year: 2020
Subjects: subject: CHIM/12 CHIMICA DELL'AMBIENTE E DEI BENI CULTURALI
subject: CHIM/03 CHIMICA GENERALE INORGANICA

description: 2018 - 2019
description: The aim of this PhD project is the combination of a pH clock reaction (the enzymatic urea-urease reaction) with pH-responsive materials to generate a chemo-mechanical coupling. A clock reaction is characterized by a latent period during which no significant change takes place in the mixture, and then a change occurs suddenly. The urea-urease reaction, is a biocompatible pH sensitive reaction frequent in numerous cellular systems and used by bacteria H.pylori to raise the local pH according to the overall stoichiometry. .. [edited by Author]
Essential oils from the leaves and flowers of Leucophyllum frutescens (Scrophulariaceae): phytochemical analysis and inhibitory effects against elastase and collagenase in vitro
Creators: name: Thabet, Amany A.
name: Ayoub, Iriny M.
name: Youssef, Fadia S.
name: Al Sayed, Eman
name: Singab, Abdel Nasser B.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
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: Developmental Biology

description: Leucophyllum frutescens (Scrophulariaceae) is a medicinal plant of Mexican traditional medicine. The aim of this study was to analyse the volatile components from the leaves and flowers by GC/MS and to assess their anti-aging activity for the first time. A total of 30 compounds were identified where 1-octen-3-ol (73.56%) and D-limonene (11.12%) represented the major ingredients in the leaves, while n-heneicosane (32.30%) and dehydroepingaione (15.15%) were the major components in the flowers. In vitro anti-aging activity was measured via assessing collagenase and elastase inhibition. Essential oils from the leaves and flowers showed potential collagenase inhibitory activity with IC50 of 55.7 and 47.4 µg/mL. However, the oils from the leaves and flowers showed moderate anti-elastase activity with IC50 of 60.8 and 97.7 µg/mL. Therefore, the oil of Leucophyllum frutescens could afford a promising natural anti-aging drug.
Behavior near $θ=π$ of the mass gap in the 2D O(3) non-linear sigma model
Creators: name: Alles, B.
name: Giordano, M.
name: Papa, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The validity of the Haldane's conjecture entails that the mass gap of the 2-dimensional O(3) non-linear sigma model with a $θ$-term must tend to zero as $θ$ approaches the value $π$ by following a precise law. In the present paper we extract the related critical exponents by simulating the model at imaginary $θ$.
description: 24 pages, LaTeX source and 5 eps figures
Improved Poincaré-Hardy inequalities on certain subspaces of the Sobolev space
Creators: name: Ganguly, Debdip
name: Roychowdhury, Prasun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove an improved version of Poincaré-Hardy inequality in suitable subspaces of the Sobolev space on the hyperbolic space via Bessel pairs. As a consequence, we obtain a new Hardy type inequality with an improved constant (than the usual Hardy constant). Furthermore, we derive a new kind of improved Caffarelli-Kohn-Nirenberg inequality on the hyperbolic space.
description: 14 pages
Controlling local thermalization dynamics in a Floquet-engineered dipolar ensemble
Creators: name: Martin, Leigh S.
name: Zhou, Hengyun
name: Leitao, Nathaniel T.
name: Maskara, Nishad
name: Makarova, Oksana
name: Gao, Haoyang
name: Zhu, Qian-Ze
name: Park, Mincheol
name: Tyler, Matthew
name: Park, Hongkun
name: Choi, Soonwon
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Understanding the microscopic mechanisms of thermalization in closed quantum systems is among the key challenges in modern quantum many-body physics. We demonstrate a method to probe local thermalization in a large-scale many-body system by exploiting its inherent disorder, and use this to uncover the thermalization mechanisms in a three-dimensional, dipolar-interacting spin system with tunable interactions. Utilizing advanced Hamiltonian engineering techniques to explore a range of spin Hamiltonians, we observe a striking change in the characteristic shape and timescale of local correlation decay as we vary the engineered exchange anisotropy. We show that these observations originate from the system's intrinsic many-body dynamics and reveal the signatures of conservation laws within localized clusters of spins, which do not readily manifest using global probes. Our method provides an exquisite lens into the tunable nature of local thermalization dynamics, and enables detailed studies of scrambling, thermalization and hydrodynamics in strongly-interacting quantum systems.
description: 6 pages, 4 figures main text
Boletín informativo línea social comunitaria
Creators: name: Torres, Erika Johana Pantoja
name: Ojeda, Angela Patricia Girón
name: Estudiantes De Semillero TROPUS
Publisher: name: Zenodo
Year: 2022

description: E s t e b o l e t í n i n f o r m a t i v o b u s c a s o c i a l i z a r l a s a c t u a l i z a c i o n e s d e l a t r a y e c t o r i a i n v e s t i g a t i v a d e d i f e r e n t e s g r u p o s d e l s e m i l l e r o d e i n v e s t i g a c i ó n e n e l p e r i o d o d e l a ñ o 2 0 2 2 , d e s a r r o l l a d o d e s d e e l g r u p o C O G N O S E R d e l p r o g r a m a d e p s i c o l o g í a d e l a F u n d a c i ó n U n i v e r s i t a r i a d e P o p a y á n , d e s t a c a n d o e l c u m p l i m i e n t o d e l o b j e t i v o d e l s e m i l l e r o T R O P U S , e l c u a l e s f o r m a r j ó v e n e s a t r a v é s d e u n a p e r s p e c t i v a i n t e r d i s c i p l i n a r i a c o n l a f i n a l i d a d d e f o r t a l e c e r e n l o s e s t u d i a n t e s u n c o n j u n t o d e h a b i l i d a d e s n e c e s a r i a s p a r a l a i n v e s t i g a c i ó n . A c o n t i n u a c i ó n , s e p r e s e n t a r á n l o s p r o y e c t o s d e s d e l a P s i c o l o g í a S o c i a l - C o m u n i t a r i a , q u e t i e n e c o m o o b j e t o d e e s t u d i o l o s f e n ó m e n o s s o c i a l e s o l a s c o m u n i d a d e s
 e n s í m i s m a s . A q u í e l i n v e s t i g a d o r t i e n e u n a m a y o r c e r c a n í a c o n l o s p a r t i c i p a n t e s.
An Abstract Formal Basis for Digital Crowds
Creators: name: Slavkovik, Marija
name: Dennis, Louise A.
name: Fisher, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Crowdsourcing, together with its related approaches, has become very popular in recent years. All crowdsourcing processes involve the participation of a digital crowd, a large number of people that access a single Internet platform or shared service. In this paper we explore the possibility of applying formal methods, typically used for the verification of software and hardware systems, in analysing the behaviour of a digital crowd. More precisely, we provide a formal description language for specifying digital crowds. We represent digital crowds in which the agents do not directly communicate with each other. We further show how this specification can provide the basis for sophisticated formal methods, in particular formal verification.
description: 32 pages, 4 figures
title: Retrospective studies on GP referral for neck lump ultrasound
Creators: name: Chang, Sau Lee
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Patterns of Care
subject: Diagnostic procedure
subject: Ultrasound
subject: Head and neck

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the efficacy of our current practice using ultrasound as a gatekeeper for secondary care referral in neck lump presentation. To compare the effectiveness of GP referral to specialist based on clinical suspicion with or without ultrasound...
Modeling TB-HIV syndemic and treatment
Creators: name: Silva, Cristiana J.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 34D30, 92D30, 93A30

description: Tuberculosis (TB) and human immunodeficiency virus (HIV) can be considered a deadly human syndemic. In this article, we formulate a model for TB and HIV transmission dynamics. The model considers both TB and acquired immune deficiency syndrome (AIDS) treatment for individuals with only one of the infectious diseases or both. The basic reproduction number and equilibrium points are determined and stability is analyzed. Through simulations, we show that TB treatment for individuals with only TB infection reduces the number of individuals that become co-infected with TB and HIV/AIDS, and reduces the diseases (TB and AIDS) induced deaths. Analogously, the treatment of individuals with only AIDS also reduces the number of co-infected individuals. Further, TB-treatment for co-infected individuals in the active and latent stage of TB disease, implies a decrease of the number of individuals that passes from HIV-positive to AIDS.
description: This is a preprint of a paper whose final and definite form is: Journal of Applied Mathematics (ISSN 1110-757X) 2014, Article ID 248407, http://dx.doi.org/10.1155/2014/248407
Good practice recommendations for the implementation of a career tracking survey
Creators: name: Rusitoru, Mihaela-Viorica
name: Boman, Julia
Publisher: name: Zenodo
Year: 2022

description: This good practice guide presents lessons learnt from the career-tracking survey of recent PhD graduates from nine European universities, undertaken as part of the DocEnhance project funded by the European Union. The DocEnhance project’s overall aim is to enhance existing PhD programmes by integrating transferable skills and a more career-oriented curriculum into doctoral training and by preparing PhD holders to work in a variety of jobs outside and inside academia.
Configurational entropy as a probe of the stability condition of compact objects
Creators: name: Koliogiannis, P. S.
name: Tsalis, G. A.
name: Panos, C. P.
name: Moustakidis, Ch. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We systematically extend the statement that the configurational entropy provides an alternative approach to studying gravitational stability of compact objects, carried out in the previous work of M. Gleiser and N. Jiang, Phys. Rev. D {\bf 92}, 044046 (2015). Inspired by that paper, we try to answer the crucial question: Is there any one-to-one correspondence between the minimum of the configurational entropy and the stability point for each realistic equation of state? In view of the above question, we focus on neutron stars, quark stars, as well as on the third family of compact stars (hybrid stars), where a possible phase transition may lead to the existence of twin stars (stars with equal mass but different radius). In each case, we use a large set of equations of state investigating the possibility to find correlations between the stability region obtained from the traditional perturbation methods to the one obtained by the minimum of configurational entropy. We found that the suggested prediction of the stability by the minimization of the configurational entropy, concerning neutron stars and quark stars, does not have, at least quantitatively, universal validity. However, in several cases it qualitatively predicts the existence of the stability point. In conclusion, the configurational entropy, can be considered as an additional tool which enters into the quiver for studying the stability of compact objects such as for example neutron and quark stars, but taking into account that the accuracy of the predictions depends on the specific character of each equation of state.
description: v1: 9 pages, 3 figures; v2: 5 pages, 4 figures; accepted for publication in Physical Review D
Zanzibar yam (Dioscorea sansibarensis Pax) isolates exhibit cyclooxygenase enzyme and lipid peroxidation inhibitory activities
Creators: name: Dissanayake, Amila A.
name: Mmongoyo, Juma A.
name: Nair, Muraleedharan G.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
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: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Several phenanthrenes (1–5), phenolics (6–8) and steroidal sapogenins (9–11) were isolated for the first time from the aqueous and methanolic extracts of Dioscorea sansibarensis Pax yam collected from Tanzania. Chemical structures of all the isolates (1–11) were determined by using 1D and 2D nuclear magnetic resonance spectral methods. All pure isolates were evaluated for anti-inflammatory activity using in vitro cyclooxygenase enzyme (COX-1 and -2) inhibitory assays. Among the isolates tested, phenanthrenes 3–5 showed the highest COX-1 and -2 enzyme inhibitory activity whereas phenolics (6–8) and steroidal sapogenins (9–11) exhibited moderate inhibition when compared to non-steroidal anti-inflammatory drugs aspirin, ibuprofen and naproxen. Compounds 6–11 were evaluated for antioxidant activity using lipid peroxidation inhibitory (LPO) assay for the first time and exhibited moderate LPO inhibition.
title: Confluence patterns of bile ducts from the caudate lobe and variations in the right and left hepatic ducts: an analysis using multi-detector row computed tomography cholangiography
Creators: name: Edo, Hiromi
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: CT-High Resolution
subject: CT
subject: Liver
subject: Anatomy
subject: Abdomen
subject: Cholangiography
subject: Normal variants
subject: Education and training
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Despite advancements in technique, surgery in the caudate lobe is still challenging because of its deep location within the liver and proximity to hepatic hilar structures [1-3]. Knowledge of anatomical variations of the biliary system helps reduce...
Flip-graph moduli spaces of filling surfaces
Creators: name: Parlier, Hugo
name: Pournin, Lionel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: This paper is about the geometry of flip-graphs associated to triangulations of surfaces. More precisely, we consider a topological surface with a privileged boundary curve and study the spaces of its triangulations with n vertices on the boundary curve. The surfaces we consider topologically fill this boundary curve so we call them filling surfaces. The associated flip-graphs are infinite whenever the mapping class group of the surface (the group of self-homeomorphisms up to isotopy) is infinite, and we can obtain moduli spaces of flip-graphs by considering the flip-graphs up to the action of the mapping class group. This always results in finite graphs and we are interested in their geometry. Our main focus is on the diameter growth of these graphs as n increases. We obtain general estimates that hold for all topological types of filling surface. We find more precise estimates for certain families of filling surfaces and obtain asymptotic growth results for several of them. In particular, we find the exact diameter of modular flip-graphs when the filling surface is a cylinder with a single vertex on the non-privileged boundary curve.
description: 52 pages, 29 figures
title: Update On Magnetic Resonance Sequences for Metal Artifact Reduction in Patients with Osteosynthesis Material
Creators: name: Osorio, Santiago
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: MR physics
subject: Musculoskeletal joint
subject: Musculoskeletal bone
subject: MR
subject: Technical aspects
subject: Artifacts
subject: Prostheses

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe magnetic resonance (MR) sequences that allow magnetic susceptibility artifact reduction secondary to osteosynthesis material (OSM), in the postoperative imaging of the musculoskeletal system (MSK). To emphasize the importance of studying...
General nonlinear Hall current in magnetic insulators beyond the quantum anomalous Hall effect
Creators: name: Kaplan, Daniel
name: Holder, Tobias
name: Yan, Binghai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Can a generic magnetic insulator exhibit a Hall current? The quantum anomalous Hall effect (QAHE) is one example of an insulating bulk carrying a quantized Hall conductivity and other insulators (with zero Chern number) present zero Hall conductance in the linear response regime. Here, we find that a general magnetic insulator possesses a nonlinear Hall conductivity quadratic to the electric field if the system breaks inversion symmetry. This conductivity originates from an induced orbital magnetization due to virtual interband transitions. We identify three contributions to the wavepacket motion, a velocity shift, a positional shift, and a Berry curvature renormalization. In contrast to the crystalline solid, we find that this nonlinear Hall conductivity vanishes for Landau levels of a 2D electron gas, indicating a fundamental difference between the QAHE and the Integer quantum Hall effect.
title: Venous thrombosis and infection associated with peripherally inserted central catheter
Creators: name: Escobar, Ana
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Interventional vascular
subject: Vascular
subject: Extremities
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Spectral Doppler
subject: PACS
subject: Catheters
subject: Embolism / Thrombosis
subject: Infection
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: INTRODUCTION Peripherally inserted central catheters (PICC) are an alternative to central venous catheters (CVC's) in patients requiring long-term venous access (1). The introduction and growing demand of these catheters is based on the fact...