cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transport of inertial particles by viscous streaming in arrays of oscillating probes
Creators: name: Chong, Kwitae
name: Kelly, Scott D.
name: Smith, Stuart T.
name: Eldredge, Jeff D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A novel mechanism for the transport of microscale particles in viscous fluids is demonstrated. The mechanism exploits the trapping of such particles by rotational streaming cells established in the vicinity of an oscillating cylinder, recently analyzed in previous work. The present work explores a strategy of transporting particles between the trapping points established by multiple cylinders undergoing oscillations in sequential intervals. It is demonstrated that, by controlling the sequence of oscillation intervals, an inertial particle is effectively and predictably transported between the stable trapping points. Arrays of cylinders in various arrangements are investigated, revealing a quite general technique for constructing arbitrary particle trajectories. The timescales for transport are also discussed.
description: 10 pages, 6 figures. Under review in Appl. Phys. Lett
Parameter estimation in continuous stochastic volatility models
Creators: name: Albano, Giuseppina
name: Giordano, Francesco
name: Perna, Cira
Publisher: name: Universita' degli Studi di Salerno
Year: 2009
Subjects: Stochastic volatility
Discrete-time ob- servations
Diffusion processes

description: Continuous-time di usion processes are often used in literature to model dynamics of nancial markets. In such kinds of models a rel- evant role is played by the variance of the process. So assumptions on the functional form of such variance have to be made in order to analyse the distribution of the resulting process and to make inference on the model. In this paper the variance is also modelled by means of a di usion process. This comes out as continuous time approximation of a GARCH(1; 1) process. Inference on the parameters and properties of the involved estimators are discussed under di erent choices of the frequency data. Simulations on the model are also performed.
title: Imaging of extracranial carotid artery aneurysms
Creators: name: Gabelloni, Michela
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Education and training
subject: Aneurysms
subject: Diagnostic procedure
subject: Ultrasound-Colour Doppler
subject: MR-Angiography
subject: CT-Angiography
subject: Vascular
subject: Arteries / Aorta

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To give an overview of the pathophysiology, diagnostic workup and treatment of extracranial carotid artery...
Are atypical archives FAIR? Exploring Reuse in non-traditional digital archives.
Creators: name: Garland, Nicky
Publisher: name: Zenodo
Year: 2023
Subjects: archaeology
reuse
archive

description: A presentation given for the session 'Thinking Outside of the Box: Sustainable Futures for Atypical Archives'

 

Abstract:

Over the last decade much work has been undertaken to ensure archaeological archives are Finable, Accessible and Interoperable. However, ensuring archives, whether digital or physical, are Reused remains a key challenge. Atypical archives add to those challenges. Atypical digital data may involve bespoke databases designed for highly specific purposes or the use of uncommon data formats that require specialist or proprietary software. These challenges restrict the accessibility and interoperability of this data and consequently, the potential reuse of these archives in the future. Using case studies from ADS archives, this paper will explore these challenges in detail and present possible solutions that may ensure the long-term sustainability of atypical archives. These solutions include the use of standardised and richly described metadata but also communicating the presence and usefulness of these archives and improving digital literacy so that atypical data can be properly reused for future research.
Growing spin model in deterministic and stochastic trees
Creators: name: Sienkiewicz, Julian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We solve the growing asymmetric Ising model [Phys. Rev. E 89, 012105 (2014)] in the topologies of deterministic and stochastic (random) scale-free trees predicting its non-monotonous behavior for external fields smaller than the coupling constant $J$. In both cases we indicate that the crossover temperature corresponding to maximal magnetization decays approximately as $(\ln \ln N)^{-1}$, where $N$ is the number of nodes in the tree.
description: 6 pages, 6 figures
Comparative Green and Conventional Synthesis of 2-Hydroxy-1-Naphthaldehyde Based Barbiturates and Their DFT Study
Creators: name: K., Snigdha
name: T.N., Mohammed Musthafa
name: P., Mohammed Rashad
name: Asiri, Abdullah M.
name: Sobahi, Tariq R.
name: Asad, Mohammad
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: 2-Hydroxy-1-naphthaldehyde based barbiturates were synthesized through an eco-friendly greener approach, by reaction of 2-hydroxynaphthalene-1-carbaldehyde with three different barbituric acid derivatives in presence of natural, biodegradable and biocompatible green catalyst chitosan-SO3H. The use of solvent-free reaction in presence of functionalized chitosan for the synthesis of barbituric acid derivatives makes the present protocol as green and eco-friendly. A comparative study of conventional as well as solvent-free methods highlights the advantages, such as admirable yield, reduced reaction time with eviction of environmentally hazardous solvents, which leads to sustainability. The chemical structures of compounds were characterized by spectral techniques like IR, 1H NMR, 13C NMR and mass spectrometry. Additionally, computational studies of synthesized compounds were performed using density functional theory (DFT) at M06 level and 6-311 G (d,p) basis set to elucidate the electronic structures, and counter check the experimental findings. Overall, DFT findings at M06/6-311G (d,p) level show good agreement with the experimental data which confirms the purity of entitled compounds. Natural bond orbital (NBO) analysis and non-linear optical (NLO) properties were explored at the M06-/6-311G (d,p) level of theory. NBO analysis confirmed that hyper conjugative interactions are responsible for the stability of compounds. The energy gaps in compounds 5, 6 and 7 were found as 3.822, 3.815 and 3.643 eV, respectively. Furthermore, the global reactivity parameters were calculated using the FMOs energies which indicate that 5–7 hold more donating capability and stability. NLO findings confirmed that 5–7 have superior properties as compared to prototype standard compounds which unveiled their potential applications for optoelectronic technology.
Experimental study of ionization yield of liquid xenon for electron recoils in the energy range 2.8 - 80 keV
Creators: name: Akimov, D. Yu.
name: Afanasyev, V. V.
name: Alexandrov, I. S.
name: Belov, V. A.
name: Bolozdynya, A. I.
name: Burenkov, A. A.
name: Efremenko, Yu. V.
name: Egorov, D. A.
name: Etenko, A. V.
name: Gulin, M. A.
name: Ivakhin, S. V.
name: Kaplin, V. A.
name: Karelin, A. K.
name: Khromov, A. V.
name: Kirsanov, M. A.
name: Klimanov, S. G.
name: Kobyakin, A. S.
name: Konovalov, A. M.
name: Kovalenko, A. G.
name: Kuchenkov, A. V.
name: Kumpan, A. V.
name: Melikyan, Yu. A.
name: Nikolaev, R. I.
name: Rudik, D. G.
name: Sosnovtsev, V. V.
name: Stekhanov, V. N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the results of the first experimental study of ionization yield of electron recoils with energies below 100 keV produced in liquid xenon by the isotopes: 37Ar, 83mKr, 241Am, 129Xe, 131Xe. It is confirmed by a direct measurement with 37Ar isotope (2.82 keV) that the ionization yield is growing up with the energy decrease in the energy range below ~ 10 keV accordingly to the NEST predictions. Decay time of scintillation at 2.82 keV is measured to be 25 +/- 3 ns at the electric field of 3.75 kV/cm.
description: 16 pages, 8 figures
title: The role of magnetic resonance imaging in the assesment of mammographically detected isolated architectural distortions of the breast
Creators: name: Erdogan, Nesrin
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Breast
subject: Mammography
subject: MR
subject: Biopsy
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The architectural distortion is one of the mamographic findings of breast cancer. Bening breast diseases such as radial scar, sclerosing adenosis, postprocedural changes can also cause distortions [1,2,3] Architectural distortionis a subtle sign of...
Modelling total solar irradiance since 1878 from simulated magnetograms
Creators: name: Dasi-Espuig, M.
name: Jiang, J.
name: Krivova, N. A.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new model of total solar irradiance (TSI) based on magnetograms simulated with a surface flux transport model (SFTM) and the SATIRE (Spectral And Total Irradiance REconstructions) model. Our model provides daily maps of the distribution of the photospheric field and the TSI starting from 1878. We first calculate the magnetic flux on the solar surface emerging in active and ephemeral regions. The evolution of the magnetic flux in active regions is computed using a surface flux transport model fed with the observed record of sunspot group areas and positions. The magnetic flux in ephemeral regions is treated separately using the concept of overlapping cycles. To model the ephemeral region cycles, we assume that their length and amplitude are related to that of the sunspot cycles. We then use a version of the SATIRE model to compute the TSI. The area coverage and the distribution of different magnetic features as a function of time, which are required by SATIRE, are extracted from the simulated magnetograms and the modelled ephemeral region magnetic flux. Previously computed intensity spectra of the various types of magnetic features are employed. Our model reproduces the PMOD composite of TSI measurements starting from 1978 at daily and rotational timescales more accurately than the previous version of the SATIRE model computing TSI over this period of time. The simulated magnetograms provide a more realistic representation of the evolution of the magnetic field on the photosphere and also allow us to make use of information on the spatial distribution of the magnetic fields before the times when observed magnetograms were available. We find that the secular increase in TSI since 1878 is fairly stable to modifications of the treatment of the ephemeral region magnetic flux.
title: Local Staging of Breast Cancer: Three-Dimensional Automated Breast Ultrasound and/or Contrast Enhanced Spectral Mammography?
Creators: name: Helal, Maha
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Breast
subject: Mammography
subject: Ultrasound
subject: Diagnostic procedure
subject: Staging
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Once a diagnosis of breast cancer is established, the best treatment strategy for each patient depends on detection as well as accurate size estimation of the tumor and the presence or absence of multiple foci [1]. Contrast Enhanced Spectral...
Mono-Ammonium Phosphate Fertilizer Modified by Cadmium: An Efficient and Recyclable Catalyst for 2,3-Dihydroquinazolin-4(1H)-One Derivatives Synthesis
Creators: name: Chehab, Soukaina
name: Merroun, Youssef
name: Ghailane, Tourya
name: Ghailane, Rachida
name: Boukhris, Said
name: Souizi, Abdelaziz
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology

description: The present work reports a simple procedure for the preparation of cadmium pyrophosphate (Cd2P2O7) from the modification of mono-ammonium phosphate (MAP) fertilizer by cadmium chloride (CdCl2). The obtained support has been characterized by microscopic and spectroscopic methods, namely X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and infrared spectroscopy (IR). The catalytic activity of Cd2P2O7 has been evaluated by its application for the first time as a heterogeneous catalyst in the 2,3-dihydroquinazolin-4(1H)-one derivatives synthesis. This synthesis has been realized through the condensation of anthranilamide with different aromatic aldehydes. The optimum reaction conditions have been determined by studying the effect of the catalysts amount, the solvent nature, and the temperature. The results show that Cd2P2O7 possesses a high catalytic efficiency because of the excellent yields and the short reaction times obtained for the studied reactions. Furthermore, it presents a remarkable capacity for recovery and reusability, and therefore its application contributes to the green chemistry development.
title: Emergency abdominal CT exposure burden in non-traumatic young patients
Creators: name: Anzelmo, Maria Teresa
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Dosimetric comparison
subject: Dosimetry
subject: CT
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To show how the raised number of abdominal CT scans performed in emergency has an impact on radiation dose exposure burden in young adults, mainly in some clinical contexts. T his study was to evaluate the use of CT abdomen compared to US in young...
Topological Surgery and its Dynamics
Creators: name: Lambropoulou, Sofia
name: Antoniou, Stathis
name: Samardzija, Nikola
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R65, 57N12, 57M99, 37B99, 78M25, 92B99, 37E99

description: Topological surgery occurs in natural phenomena where two points are selected and attracting or repelling forces are applied. The two points are connected via an invisible `thread'. In order to model topologically such phenomena we introduce dynamics in 1-, 2- and 3-dimensional topological surgery, by means of attracting or repelling forces between two selected points in the manifold, and we address examples. We also introduce the notions of solid 1- and 2-dimensional topological surgery, and of truncated 1-, 2- and 3-dimensional topological surgery, which are more appropriate for modelling natural processes. On the theoretical level, these new notions allow to visualize 3-dimensional surgery and to connect surgeries in different dimensions. We hope that through this study, topology and dynamics of many natural phenomena as well as topological surgery may now be better understood.
description: 20 pages, 30 figures
Ultrasonic-Mediated Green Synthesis of Novel S-Arylated-Pyridopyrimidines and Antimicrobial Evaluation against Escherichia coli and Staphylococcus aureus
Creators: name: Riadi, Yassine
name: Afzal, Obaid
name: Al-Tamimi, Abdul-Malek S.
name: Ali, Abuzer
name: Ali, Amena
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
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: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: A facile, eco-friendly and effective ultrasonic strategy to synthesize S-arylated-pyridopyrimidines is described starting from 4-thiol or 4-halogenopyridopyrimidines through a reaction involving a green procedure under ultrasonic irradiation and in presence of water as green solvent. The resulted derivatives were assessed for the antibacterial activity against different bacteria strains.
Synthesis, Molecular Modeling, and Anticancer Screening of Some New Imidazothiadiazole Analogs
Creators: name: Abu-Melha, Sraa
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: A series of N-aryl-2-((6-arylimidazo[2,1-b]thiadiazol-2-yl)thio)acetamide compounds 4 and 5 was synthesized by heterocyclization of their precursors N-aryl-2-((5-amino-1,3,4-thiadiazol-2-yl)thio)acetamides 3a–c with phenacyl chloride reagents. The structural and spectral features of the synthesized compounds were studied using DFT calculations. The DFT-estimated 1H NMR spectral data exhibited good agreement with the experimental data. Furthermore, the HOMO–LUMO energies were used in determination of some chemical reactivity descriptors. The cytotoxic activities of the prepared imidazothiadiazoles were evaluated toward four different cancer cell lines. Derivatives 5c, 4c, 5a, and 4a presented powerful cytotoxic results against breast cancer rather than the residual derivatives 5b and 4b compared with 5-fluorouracil as a reference. Meantime, the docking study was used on the synthesized imidazothiadiazole analogs and furnished adequate results toward PDB ID: 1DLS.
title: Left ventricle wall motion disorders in myocardial infarction depicted by compressed sensing real-time cine imaging
Creators: name: Pontana, François
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Cardiovascular system
subject: Cardiac
subject: MR
subject: Diagnostic procedure
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Viability work-up in myocardial infarction (MI) is a common indication for cardiac MRI (CMR) 1 . CMR provides a direct visualisation of myocardium contracility, usually using SSFP cine sequences. But the acquisition of such sequences might be...
Data Apropiación de las TIC en la educación remota universitaria de Latinoamérica durante la pandemia: Revisión sistemática
Creators: name: Esther, Lezama Romero
Publisher: name: Zenodo
Year: 2022
Subjects: Educación Superior, Revisión sistemática, Educación a distancia, Pandemia, Tecnología de la información

description: Base de datos de Apropiación de las TIC en la educación remota universitaria de Latinoamérica durante la pandemia: Revisión sistemática
An extremely optically dim tidal feature in the gas-rich interacting galaxy group NGC 871/NGC 876/NGC 877
Creators: name: Lee-Waddell, K.
name: Spekkens, K.
name: Cuillandre, J. -C.
name: Cannon, J.
name: Haynes, M. P.
name: Sick, J.
name: Chandra, P.
name: Patra, N.
name: Stierwalt, S.
name: Giovanelli, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present GMRT HI observations and deep CFHT MegaCam optical images of the gas-rich interacting galaxy group NGC 871/NGC 876/NGC 877 (hereafter NGC 871/6/7). Our high-resolution data sets provide a census of the HI and stellar properties of the detected gas-rich group members. In addition to a handful of spiral, irregular and dwarf galaxies, this group harbours an intriguing HI feature, AGC 749170, that has a gas mass of ~10^9.3 M_sol, a dynamical-to-gas mass ratio of ~1 (assuming the cloud is rotating and in dynamical equilibrium) and no optical counterpart in previous imaging. Our observations have revealed a faint feature in the CFHT g'- and r'-bands; if it is physically associated with AGC 749170, the latter has M/L_g > 1000 M_sol/L_sol as well as a higher metallicity (estimated using photometric colours) and a significantly younger stellar population than the other low-mass gas-rich group members. These properties, as well as its spectral and spatial location with respect to its suspected parent galaxies, strongly indicate a tidal origin for AGC 749170. Overall, the HI properties of AGC 749170 resemble those of other optically dark/dim clouds that have been found in groups. These clouds could represent a class of relatively long-lived HI-rich tidal remnants that survive in intermediate-density environments.
description: 11 pages, 6 figures, accepted for publication in MNRAS
Design of Proteins Specifically Tailored to Bind to NS1 Protein from Variants of Dengue and Zika
Creators: name: Grandguillaume, Ilyas Philippe Jacques Abdelkader
name: Silva, Fernando Luís Barroso da
name: Etchebest, Catherine
Publisher: name: Zenodo
Year: 2023

description: Viruses of the family Flaviviridae such as Dengue and Zika, are arboviruses endemic to the equatorial regions of Brazil, Asia and Africa. The global incidence of dengue fever is estimated between 100 and 400 million infections per year. The Zika virus is responsible for serious congenital diseases and the resurgence of Guillain-Barré syndrome. There is no treatment or vaccine for these diseases, and diagnosis remains difficult because only access to PCR can identify the virus and the variant. During infection, many viral proteins are found in the blood, including envelope proteins and nonstructural protein 1 (NS1). It has been identified as an early marker of the disease as well as a potential target for the development of vaccines and drugs. Recent developments have been made in the creation of anti-NS1 antibodies designed to interact with the widest possible range of flavivirus strains, with varying affinities and specificities. These new molecules for therapeutic purposes do not solve the problem of diagnosis: in fact, diseases such as dengue fever and zika are difficult to discern because they are present in the same regions and the symptoms caused are not very specific. As the complications can be serious, it is important to propose new diagnostic methods which identify precisely the virus, going as far as discrimination between variants. The objective of this project is to provide a library of antibodies capable of recognizing with high specificity the NS1 proteins of the different variants of dengue and Zika viruses. Specific NS1 Zika nanobodies were created in the laboratory by the Pasteur Institute, we predicted their three-dimensional structures from the sequence, and we compared the results of the in vitro affinity experiments carried out by the Institute with our in silico docking results. We have also identified a method based on machine learning and on the signature of the antigen-antibody contact which makes it possible to evaluate the quality of the interaction between an antibody and NS1, these methods have been tested on ns1-antibody complexes of the PDB. Our results indicate that it is relevant to apply these methods on nanobodies produced in the laboratory because the interactions with the antigen are similar. Once the binding site and the affinity have been predicted, the antibody sequence can be modified to modulate its specificity. Thus we aim to design new protein sequences for antibodies and nanobodies adapted specifically to bind to NS1 from variants of the two studied flavivirus.
Design and development of new polymeric materials with potential antimicrobial and/or antifungal activity
Creators: name: Sessa, Lucia
Publisher: name: Universita degli studi di Salerno
Year: 2014
Subjects: subject: CHIM/03 CHIMICA GENERALE E INORGANICA
subject: Antimicrobial
subject: Peptide
subject: Biometerial

description: 2012 - 2013
description: This PhD project is focused on the development of new polymeric materials with antibacterial and antifungal activity. The first part of the work was dedicated to the synthesis and the insertion of a modified amino acid into an antimicrobial peptide (AMP), with the aim to retain the action mechanism on bacterial membranes. Understanding the mechanism of action of AMPs is important for the rational design of new drugs. For this reason, I have collected structural properties, antimicrobial activity values and biological origin of antimicrobial peptides from published data. I have calculated the most relevant chemical physical properties like charge, hydrophobic moment, helicity, flexibility, isoelectric point, Boman and instability index and penetration capabilities. This data collection work permitted us to create YADAMP (www.yadamp.unisa.it), a web database with detailed informations on AMPs. YADAMP database contains the highest number of active sequences with proven antimicrobial activity. YADAMP peremitted me to do a work of data mining that end up with the choice of a peptide, a defensine, to be used as template for developing a new photoresponsive peptide. The peptide, hereafter indicated as ALY, is a short α-helix, membrane active AMP with a tyrosine in the sequence. I have developed the modified analogue replacing the tyrosine by a modified tyrosine with azobenzene group in the side chain. The modified amino acid, named Fmoc-azoTyr, was synthesized according to the classic scheme of diazocopulation reactions. I have chosen the azobenzene group because it permits a reversible trans to cis photochemical isomerization... [edited by author]
title: A Study on Dosimetry using the Video Recording of a Smartphone
Creators: name: Yamauchi, Masato
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Dosimetric comparison
subject: Equipment
subject: Dosimetry
subject: Image manipulation / Reconstruction
subject: CT
subject: Conventional radiography
subject: Radioprotection / Radiation dose
subject: Radiographers
subject: Radiation physics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Since the Fukushima nuclear power plant accident, it has been well known that much dot noise exists in video provided by cameras of the monitoring systems in high dose-rate gamma irradiation fields [1]. However, few studies have examined dot noise...
Spin-Hall Effect and Diamagnetism of Anisotropic Dirac Electrons in Solids
Creators: name: Fuseya, Yuki
name: Ogata, Masao
name: Fukuyama, Hidetoshi
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: Spin-Hall conductivity $σ_{{\rm s}xy}$ and orbital susceptibility $χ$ are investigated for the anisotropic Wolff Hamiltonian, which is an effective Hamiltonian common to Dirac electrons in solids. It is found that, both for $σ_{{\rm s}xy}$ and $χ$, the effect of anisotropy appears only in the prefactors, which is given as the Gaussian curvature of the energy dispersion, and their functional forms are equivalent to those of the isotropic Wolff Hamiltonian. As a result, it is revealed that the relationship between the spin Hall conductivity and the orbital susceptibility in the insulating state, $σ_{{\rm s}xy}=(3mc^2/\hbar e)χ$, which was firstly derived for the isotropic Wolff Hamiltonian, is also valid for the anisotropic Wolff Hamiltonian. Based on this theoretical finding, the magnitude of spin-Hall conductivity is estimated for bismuth and its alloys with antimony by that of orbital susceptibility, which has good correspondence between theory and experiments. The magnitude of spin-Hall conductivity turns out to be as large as $eσ_{{\rm s}xy} \sim 10^4 Ω^{-1}{\rm cm}^{-1}$, which is about 100 times larger than that of Pt.
description: 11 pages, 5 figures
Water-stable porous Al24 Archimedean solids for removal of trace iodine.
Creators: name: Liu, Ya-Jie
name: Sun, Yi-Fan
name: Shen, Si-Hao
name: Wang, San-Tai
name: Liu, Zhuang-Hua
name: Fang, Wei-Hui
name: Wright, Dominic S
name: Zhang, Jian
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
/639/638/263/915
/639/638/541/965
/145
article

description: In this paper, we report a unique type of core-shell crystalline material that combines an inorganic zeolitic cage structure with a macrocyclic host arrangement and that can remove trace levels of iodine from water effectively. These unique assemblies are made up of an inorganic Archimedean truncatedhexahedron (tcu) polyhedron in the kernel which possesses six calixarene-like shell cavities. The cages have good adaptability to guests and can be assembled into a series of supramolecular structures in the crystalline state with different lattice pore shapes. Due to the unique core-shell porous structures, the compounds are not only stable in organic solvents but also in water. The characteristics of the cages enable rapid iodine capture from low concentration aqueous I2/KI solutions (down to 4 ppm concentration). We have studied the detailed process and mechanism of iodine capture and aggregation at the molecular level. The facile synthesis, considerable adsorption capacity, recyclability, and β- and γ-radiation resistance of the cages should make these materials suitable for the extraction of iodine from aqueous effluent streams (most obviously, radioactive iodide produced by atomic power generation).
title: Demistifying Esophageal Emergencies
Creators: name: Perothayil, Naajia
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Trauma
subject: Foreign bodies
subject: Fistula
subject: Contrast agent-intravenous
subject: CT
subject: Gastrointestinal tract
subject: Emergency
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the significance of radiological investigation in the setting of variety of acute esophageal emergencies encountered in our...
Detailed modelling of the circumstellar molecular line emission of the S-type AGB star W Aquilae
Creators: name: Danilovich, T.
name: Bergman, P.
name: Justtanont, K.
name: Lombaert, R.
name: Maercker, M.
name: Olofsson, H.
name: Ramstedt, S.
name: Royer, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: S-type AGB stars have a C/O ratio which suggests that they are transition objects between oxygen-rich M-type stars and carbon-rich C-type stars. As such, their circumstellar compositions of gas and dust are thought to be sensitive to their precise C/O ratio, and it is therefore of particular interest to examine their circumstellar properties. We present new Herschel HIFI and PACS sub-millimetre and far-infrared line observations of several molecular species towards the S-type AGB star W Aql. We use these observations, which probe a wide range of gas temperatures, to constrain the circumstellar properties of W Aql, including mass-loss rate and molecular abundances. We used radiative transfer codes to model the circumstellar dust and molecular line emission to determine circumstellar properties and molecular abundances. We assumed a spherically symmetric envelope formed by a constant mass-loss rate driven by an accelerating wind. Our model includes fully integrated H2O line cooling as part of the solution of the energy balance. We detect circumstellar molecular lines from CO, H2O, SiO, HCN, and, for the first time in an S-type AGB star, NH3. The radiative transfer calculations result in an estimated mass-loss rate for W Aql of 4.0e-6 Msol yr-1 based on the 12CO lines. The estimated 12CO/13CO ratio is 29, which is in line with ratios previously derived for S-type AGB stars. We find an H2O abundance of 1.5e-5, which is intermediate to the abundances expected for M and C stars, and an ortho/para ratio for H2O that is consistent with formation at warm temperatures. We find an HCN abundance of 3e-6, and, although no CN lines are detected using HIFI, we are able to put some constraints on the abundance, 6e-6, and distribution of CN in W Aql's circumstellar envelope using ground-based data. We find an SiO abundance of 3e-6, and an NH3 abundance of 1.7e-5, confined to a small envelope.
description: 17 pages, 15 figures
Adaptive Output Feedback based on Closed-loop Reference Models
Creators: name: Gibson, Travis E.
name: Qu, Zheng
name: Annaswamy, Anuradha M.
name: Lavretsky, Eugene
Publisher: name: arXiv
Year: 2014
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This note presents the design and analysis of an adaptive controller for a class of linear plants in the presence of output feedback. This controller makes use of a closed-loop reference model as an observer, and guarantees global stability and asymptotic output tracking.
description: 8 Pages, submitted to IEEE Transactions on Automatic Control
title: Percutaneous endoscopic transforaminal lumbar discectomy: postoperative MRI and complications.
Creators: name: Baeva, Maria
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Infection
subject: Hernia
subject: Surgery
subject: MR
subject: Musculoskeletal spine

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To illustrate the MR imaging findings after lumbar discectomy by percutaneous endoscopic transforaminal approach, including normal appearance and...
Modeling the pHLA/TCR Complex in a Lipid Bilayer Environment
Creators: name: Alves, Levy Bueno
name: Giuliatti, Silvana
Publisher: name: Zenodo
Year: 2023

description: Multiple sclerosis (MS) is mediated by T cell responses to antigens of the central nervous system, such as myelin basic protein (MBP). The Human Leucocyte Antigen (HLA) locus is the main region associated with the disease, where certain alleles of the DRB1 gene have been linked to both predisposition and protection against MS. The binding groove of the HLA-DR heterodimer interacts with specific peptides, while T-cell receptor (TCR) recognize the complex formed by the peptide and HLA (pHLA). Understanding the preferences of this interaction may help understand susceptibility to MS. Although X-ray crystallography has been employed to determine the structure of pHLA/TCR, it does not encompass the transmembrane regions. Therefore, the aim of this study was to model the pHLA/TCR complex within a membrane environment to evaluate its stability and dynamic behavior. The complete model of this complex was generated using the MODELLER program. Atomic coordinates from the pHLA/TCR crystal (PDB ID: 1YMM) were extracted and used as the initial model, with structural gaps filled using models available in the Alphafold Protein Structure Database. A loop refinement algorithm was employed to adjust the positions of the binding, transmembrane, and cytoplasmic regions, which were oriented along the z-axis, while geometric constraints were imposed to preserve the integrity of the transmembrane helices. A heterogeneous lipid bilayer was constructed via the CHARMM-GUI server, and subsequently, the modeled complex was manually inserted into two lipid bilayers using VMD software. A 50 ns molecular dynamics (MD) simulation was conducted using the GROMACS program. The best model resulting of pHLA/TCR exhibited helices aligned parallel to the z-axis, enabling their insertion into lipid bilayers, followed by MD simulations. The resulting trajectories demonstrated that the system achieved stability throughout the simulated period, maintaining the complete integrity of the pHLA-TCR interaction. This suggests that the model is suitable for further investigations into this complex interaction in membranous environments. To analyze the potential influence of DRB1 gene polymorphisms on MS susceptibility, the next steps of this research involve modeling pHLA-DR complexes corresponding to different alleles and comparing their interactions with specific TCRs and peptides.
title: Dose assessment of recently introduced low-dose protocol in computed tomography pelvimetry to conventional techniques
Creators: name: Shahgeldi, Kaveh
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Abdomen
subject: Paediatric
subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: CT
subject: Conventional radiography
subject: Digital radiography
subject: Dosimetry
subject: Radiation effects
subject: Diagnostic procedure

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To estimate foetal and maternal doses in recently introduced low-dose computed tomography (CT) pelvimetry protocol in comparison to standard pelvimetry performed using conventional digital and computed...
Efficient determination of alloy ground-state structures
Creators: name: Seko, Atsuto
name: Shitara, Kazuki
name: Tanaka, Isao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose an efficient approach to accurately finding the ground-state structures in alloys based on the cluster expansion method. In this approach, a small number of candidate ground-state structures are obtained without any information of the energy. To generate the candidates, we employ the convex hull constructed from the correlation functions of all possible structures by using an efficient algorithm. This approach is applicable to not only simple lattices but also complex lattices. Firstly, we evaluate the convex hulls for binary alloys with four types of simple lattice. Then we discuss the structures on the vertices. To examine the accuracy of this approach, we perform a set of density functional theory calculations and the cluster expansion for Ag-Au alloy and compare the formation energies of the vertex structures with those of all possible structures. As applications, the ground-state structures of the intermetallic compounds CuAu, CuAg, CuPd, AuAg, AuPd, AgPd, MoTa, MoW and TaW are similarly evaluated. Finally, the energy distribution is obtained for different cation arrangements in MgAl$_2$O$_4$ spinel, for which long-range interactions are essential for the accurate description of its energetics.
description: 8 pages, 7 figures
title: Automatic detection and segmentation of hemorrhagic pericardial effusion on PMCT using deep learning
Creators: name: Ebert, Lars
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Haemorrhage
subject: Forensics
subject: Computer Applications-Detection, diagnosis
subject: CT
subject: Forensic / Necropsy studies
subject: Computer applications

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Post mortem computed tomography (PMCT) can be used as a preselection tool to better identify cases with a possibly non-natural cause of death. In a forensic setting, where the entire body is documented at high resolution, radiologists are facing a...
Convenient Synthesis of Some New Thiophene, Pyrazole, and Thiazole Derivatives Bearing Biologically Active Sulfonyl Guanidine Moiety
Creators: name: Fouad, Sawsan A.
name: El-Gendey, Marwa S.
name: Ahmed, Entsar M.
name: Hessein, Sadia A.
name: Ammar, Yousry A.
name: Zaki, Yasser H.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Plant Biology
subject: FOS: Biological sciences

description: The synthesis and characterization of a variety of novel heterocyclic compounds bearing the pharmacophore N-carbamimidoylsulfamoyl moiety that are relevant to antibacterial and antifungal activities are described. All the newly synthesized compounds have been characterized on the basis of IR, 1H MR and 13C NMR spectral data as well as physical data. The synthesized compounds, except thiophene 10, were tested against six standard microbial pathogens, and the antimicrobial activity of these compounds was evaluated according to the microdilution method. Most of the newly tested derivatives showed good to excellent antimicrobial activity when applied to MIC/MBC and MIC/MFC values.
title: Horseshoe Kidney: From Womb To Tomb.
Creators: name: Antil, Neha
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Neoplasia
subject: Complications
subject: CT
subject: Kidney
subject: Anatomy

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To briefly describe the embryology and anatomy of the horseshoe kidney along with associated vascular variations. Discuss the role of imaging modalities in evaluation of horseshoe kidney. Enumerate the complications associated with horseshoe kidney...
title: Experimental evaluation of diluted contrast media injection protocol using spiral-flow connecting tube aiming reduction of blurring artifact appearing on the arterial phase in the liver dynamic MR imaging using Gd-EOB-DTPA
Creators: name: Hirahara, Wataru
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Artifacts
subject: Contrast agent-intravenous
subject: MR
subject: Liver
subject: Contrast agents

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Introduction Gadoxetate disodium (Gd-EOB-DTPA) has been used during recent years in magnetic resonance imaging (MRI) for the liver. This hepatobiliary contrast agent is useful in imaging of hepatobiliary phase 15 to 20min after intravenous...
What Bell Did
Creators: name: Maudlin, Tim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: On the 50th anniversary of Bell's monumental 1964 paper, there is still widespread misunderstanding about exactly what Bell proved. This misunderstanding derives in turn from a failure to appreciate the earlier arguments of Einstein, Podolsky and Rosen. I retrace the history and logical structure of these arguments in order to clarify the proper conclusion, namely that any world that displays violations of Bell's inequality for experiments done far from one another must be non-local. Since the world we happen to live in displays such violations, actual physics is non-local.
description: 28 pages. There is a response to the paper by Reinhard Werner, and my reply is available. To appear in Journal of Physics A
title: X-ray angiography using kinetic imaging: optimising image signal-to-noise ratio
Creators: name: Óriás, Viktor
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Interventional vascular
subject: Computer applications
subject: Vascular
subject: Catheter arteriography
subject: Digital radiography
subject: Fluoroscopy
subject: Arterial access
subject: Computer Applications-General
subject: Imaging sequences
subject: Image registration

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Our aim was to compare the performance of kinetic imaging in X-ray angiography and the current gold standard digital subtraction angiography...
title: Imaging Spectrum of CNS tubercular lesions.
Creators: name: Khatri, Garvit
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Diagnostic procedure
subject: MR
subject: CT
subject: Head and neck
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To understand the entire spectrum of tubercular manifestations of CNS To increase reliability on basic imaging modalities to arrive at diagnosis To differentiate from common...
title: The value of MR diffusion kurtosis imaging for assessing early chemotherapy response in colorectal carcinoma xenografts model with epithelial mesenchymal transition
Creators: name: Liu, Huanhuan
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Animal (veterinary) studies
subject: Gastrointestinal tract
subject: MR-Diffusion/Perfusion
subject: MR-Functional imaging
subject: Chemotherapy
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Colorectal cancer (CRC) is one of the most common malignant tumors in the gastrointestinal tract. Chemotherapy resistance is an important factor affecting prognosis in patients with CRC. Epithelial-mesenchymal transition (EMT) plays an important...
Global well-posedness of the Kirchhoff equation and Kirchhoff systems
Creators: name: Matsuyama, Tokio
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This article is devoted to review the known results on global well-posedness for the Cauchy problem to the Kirchhoff equation and Kirchhoff systems with small data. Similar results will be obtained for the initial-boundary value problems in exterior domains with compact boundary. Also, the known results on large data problems will be reviewed together with open problems.
description: arXiv admin note: text overlap with arXiv:1211.3009
title: MRI findings of Idiopathic granulomatous mastitis
Creators: name: GUNER, Bahar
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Abscess
subject: Biopsy
subject: MR
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the MRI findings of idiopathic granulomatous mastitis(IGM) To review the diagnostic value of the MRI in...