cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global density-dependent $α$-nucleon interaction for $α$-nucleus elastic scattering
Creators: name: Furumoto, T.
name: Tsubakihara, K.
name: Ebata, S.
name: Horiuchi, W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We provide a global density-dependent $^4$He-nucleon (DD-$αN$) interaction to construct the $α$-nucleus optical model potential (OMP) in a wide range of incident energies. The global parametrization for the DD-$αN$ interaction is obtained based on the proton-$^4$He OMP which reproduces the elastic scattering cross-section data very well in the incident energies of 12.04--500 MeV per nucleon. We derive the $α$-nucleus potential by a folding procedure with the point-nucleon density obtained by a microscopic mean-field model using the present DD-$αN$ interaction. The density dependence of the DD-$αN$ interaction is fixed phenomenologically to reproduce the $α$-nucleus elastic scattering cross-section data by the $^{16}$O, $^{40}$Ca, $^{58}$Ni, $^{90}$Zr, and $^{208}$Pb targets at $E/A =$ 10--342.5 MeV. We also show the total reaction cross sections, which are helpful in fixing one free parameter, the renormalization factor for the imaginary part of the $α$-nucleus potential. Lastly, we show some examples, which clearly demonstrate the validity and power of the present DD-$αN$ approach.
description: 20 pages, 11 figures
Hydrophobic interactions with coarse-grained model for water
Creators: name: Egorov, S. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Integral equation theory is applied to a coarse-grained model of water to study potential of mean force between hydrophobic solutes. Theory is shown to be in good agreement with the available simulation data for methane-methane and fullerene-fullerene potential of mean force in water; the potential of mean force is also decomposed into its entropic and enthalpic contributions. Mode coupling theory is employed to compute self-diffusion coefficient of water, as well as diffusion coefficient of a dilute hydrophobic solute; good agreement with molecular dynamics simulation results is found.
The Overview of Pollution with PM2.5 and PM10 in Cluj-Napoca, Bucharest, and Iași in 2023
Creators: name: Luchiian, Alexandru
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Air
subject: Air
subject: Air quality
subject: Air quality control
subject: Ambient air quality
subject: Air quality monitoring
subject: Air quality impact
subject: Air quality directive
subject: Air quality management
subject: Pollution
subject: Pollution prevention
subject: Pollution control
subject: Air Pollution
subject: Environmental Pollution

description: Recognized as an Ambassador, Mentor, Environmental Problem Solver, Climate Change Innovator, and Green Tech Sustainability Researcher—passionate about leveraging technology to drive sustainable and impactful solutions.
Critical velocities for deflagration and detonation triggered by voids in a REBO high explosive
Creators: name: Herring, S. Davis
name: Germann, Timothy C.
name: Grønbech-Jensen, Niels
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of circular voids on the shock sensitivity of a two-dimensional model high explosive crystal are considered. We simulate a piston impact using molecular dynamics simulations with a Reactive Empirical Bond Order (REBO) model potential for a sub-micron, sub-ns exothermic reaction in a diatomic molecular solid. The probability of initiating chemical reactions is found to rise more suddenly with increasing piston velocity for larger voids that collapse more deterministically. A void with radius as small as 10 nm reduces the minimum initiating velocity by a factor of 4.
description: 7 pages, 9 figures - v.II has corrected references to figure 2
Flavonoids, antioxidant potential and antimicrobial activity of Myrcia rufipila mcvaugh leaves (myrtaceae)
Creators: name: Cascaes, Márcia M.
name: Guilhon, Giselle M. S. P.
name: Zoghbi, Maria das Graças
name: Andrade, Eloisa Helena A.
name: Santos, Lourivaldo S.
name: da Silva, Joyce Kelly R.
name: Uetanabaro, Ana Paula Trovatti
name: Araújo, Isabella S.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: This paper reports the first chemical study of the non-volatile compounds, antioxidant capacity and antimicrobial effect of the methanol extract of the leaves of Myrcia rufipila McVaugh. Samples of the leaves were collected in Maracanã Municipality, Pará, Brazil. The chemical investigation led to the identification of the triterpenoids β- and α-amyrin, the flavonoids 4'-O-galloyldihydromyricetin, myricetin, myricitrin, desmantin-I, myricetin-3-O-(3"-O-galloyl)-α-L-rhamnopyranoside and isovitexin, in addition to gallic acid. The methanol extract showed antioxidant capacity (>90%) against DPPH radical (IC50 356.3 ± 3.1 μg.mL−1) and was active only at high concentrations against the tested microorganisms, including the chloramphenicol resistant E. coli CCMB261 and S. aureus CCMB285 and a nystatin resistant C. parapsilosis CCMB 288. This study shows that M. rufipila, like other Myrcia species, is another source of flavonoids such as desmantin-I and myricitrin which have shown hypoglycemic potential, besides triterpenes and phenolic acids.
Magnetic Field Properties in High Mass Star Formation from Large to Small Scales - A Statistical Analysis from Polarization Data
Creators: name: Koch, Patrick M.
name: Tang, Ya-Wen
name: Ho, Paul T. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Polarization data from high mass star formation regions (W51 e2/e8, Orion BN/KL) are used to derive statistical properties of the plane of sky projected magnetic field. Structure function and auto-correlation function are calculated for observations with various resolutions from the BIMA and SMA interferometers, covering a range in physical scales from $\sim 70$~mpc to $\sim 2.1$~mpc. Results for the magnetic field turbulent dispersion, its turbulent to mean field strength ratio and the large-scale polarization angle correlation length are presented as a function of the physical scale at the star formation sites. Power law scaling relations emerge for some of these physical quantities. The turbulent to mean field strength ratio is found to be close to constant over the sampled observing range, with a hint of a decrease toward smaller scales, indicating that the role of magnetic field and turbulence is evolving with physical scale. A statistical method is proposed to separate large and small scale correlations from an initial ensemble of polarization segments. This also leads to a definition of a turbulent polarization angle correlation length.
description: 29 pages, 4 figures; accepted for publication in ApJ
Assessment of major histocompatibility complex class I interaction with Epstein-Barr virus and human immunodeficiency virus peptides by elevation of membrane H-2 and HLA in peptide loading-deficient cells
Creators: name: Stuber, G.
name: Modrow, Susanne
name: Höglund, P.
name: Franksson, L.
name: Elvin, J.
name: Wolf, Hans J.
name: Kärre, K.
name: Klein, G.
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 610 Medizin
subject: Amino Acid Sequence
subject: Animals
subject: Antigens, Viral/immunology
subject: DNA-Binding Proteins/immunology
subject: Epstein-Barr Virus Nuclear Antigens
subject: Gene Products, gag/immunology
subject: H-2 Antigens/analysis
subject: HIV-1/immunology
subject: HLA-A2 Antigen/analysis
subject: Herpesvirus 4, Human/immunology
subject: Humans
subject: Mice
subject: Mice, Inbred C57BL
subject: Molecular Sequence Data
subject: Viral Proteins/immunology

description: Earlier findings indicate that peptides can affect the expression of major histocompatibility complex (MHC) class I molecules on the surface of cells with defective peptide loading mechanism. We have used peptide induced increase of class I antigen expression to assess peptide interaction with MHC class I molecules. A panel of 41 overlapping synthetic peptides derived from the human immunodeficiency virus-1 (HIV-1) gag protein and 33 nonoverlapping peptides from Epstein-Barr virus (EBV) proteins EBNA-1, 2, 3, 4, 5, 6, LMP, BZLF2, BILF2, BSLF2, BALF4 and BcLF1 was assessed for the ability to enhance the expression of HLA-A2.1, H-2Db, Kb and Dd on the murine RMA-S and human 721.174/T2 (.174/T2) lines by indirect immunofluorescence. Considering doubling of the fluorescence intensity in the peptide-treated samples as positivity, 6 of 39 HIV and 1 of 32 EBV peptides were found to bind to A2.1, 6 of 39 HIV gag and 7 of 16 EBV peptides to Db, 8 of 39 HIV gag and 5 of 16 EBV peptides to Kb and 2 of 39 HIV gag and 1 of 17 EBV peptides to Dd. The sensitivity of the method is comparable to the in vitro class I assembly assay with conformation-dependent monoclonal antibody and is more discriminating than the solid-phase assay. Due to its simplicity this method can also serve for testing large peptide panels for binding capacity to various class I molecules. Moreover, the method provides information about the relevance of in vitro tests for class I assembly in living cells.
First Order Phase Transition of a Long Polymer Chain
Creators: name: Aristoff, David
name: Radin, Charles
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a model consisting of a self-avoiding polygon occupying a variable density of the sites of a square lattice. A fixed energy is associated with each $90^\circ$-bend of the polygon. We use a grand canonical ensemble, introducing parameters $μ$ and $β$ to control average density and average (total) energy of the polygon, and show by Monte Carlo simulation that the model has a first order, nematic phase transition across a curve in the $β$-$μ$ plane.
description: 11 pages, 7 figures
Understanding motifs of program behaviour and change
Creators: name: Alimadadi Jani, Saba
Publisher: name: University of British Columbia
Year: 2017

description: Program comprehension is crucial in software engineering; a necessary step for performing many tasks. However, the implicit and intricate relations between program entities hinder comprehension of program behaviour and change. It is particularly a difficult endeavour to understand dynamic and modern programming languages such as JavaScript, which has grown to be among the most popular languages. Comprehending such applications is challenging due to the temporal and implicit relations of asynchronous, DOM-related and event-driven entities spread over the client and server sides. The goal of the work presented in this dissertation is to facilitate program comprehension through the following techniques. First, we propose a generic technique for capturing low-level event-based interactions in a web application and mapping those to a higher-level behavioural model. This model is then transformed into an interactive visualization, representing episodes of execution through different semantic levels of granularity. Then, we present a DOM-sensitive hybrid change impact analysis technique for JavaScript through a combination of static and dynamic analysis. Our approach incorporates a novel ranking algorithm for indicating the importance of each entity in the impact set. Next, we introduce a method for capturing a behavioural model of full-stack JavaScript applications’ execution. The model is temporal and context-sensitive to accommodate asynchronous events, as well as the scheduling and execution of lifelines of callbacks. We present a visualization of the model to facilitate program comprehension for developers. Finally, we propose an approach for facilitating comprehension by creating an abstract model of software behaviour. The model encompasses hierarchies of recurring and application-specific motifs. The motifs are abstract patterns extracted from traces through our novel technique, inspired by bioinformatics algorithms. The motifs provide an overview of the behaviour at a high level, while encapsulating semantically related sequences in execution. We design a visualization that allows developers to observe and interact with inferred motifs. We implement our techniques in open-source tools and evaluate them through a set of controlled experiments. The results show that our techniques significantly improve developers’ performance in comprehending the behaviour and impact of change in software systems.
[OII] emitters in the GOODS field at z~1.85: a homogeneous measure of evolving star formation
Creators: name: Bayliss, K. D.
name: McMahon, R. G.
name: Venemans, B. P.
name: Ryan-Weber, E. V.
name: Lewis, J. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of a deep, near-infrared, narrow band imaging survey at a central wavelength of 1.062 microns (FWHM=0.01 microns) in the GOODS-South field using the ESO VLT instrument, HAWK-I. The data are used to carry out the highest redshift search for [OII]3727 emission line galaxies to date. The images reach an emission line flux limit (5 sigma) of 1.5 x 10^-17 erg cm^-2 s^-1, additionally making the survey the deepest of its kind at high redshift. In this paper we identify a sample of [OII]3727 emission line objects at redshift z~1.85 in a co-moving volume of ~4100 Mpc^3. Objects are selected using an observed equivalent width (EW_obs) threshold of EW_obs = 50 angstroms. The sample is used to derive the space density and constrain the luminosity function of [OII] emitters at z=1.85. We find that the space density of objects with observed [OII] luminosities in the range log(L_[OII]) > 41.74 erg s^-1 is log(rho)=-2.45+/-0.14 Mpc^-3, a factor of 2 greater than the observed space density of [OII] emitters reported at z~1.4. After accounting for completeness and assuming an internal extinction correction of A_Halpha=1 mag (equivalent to A_[OII]=1.87), we report a star formation rate density of rho* ~0.38+/-0.06 Msun yr^-1 Mpc^-3. We independently derive the dust extinction of the sample using 24 micron fluxes and find a mean extinction of A_[OII]=0.98+/-0.11 magnitudes (A_Halpha=0.52). This is significantly lower than the A_Halpha=1 (A[OII]=1.86) mag value widely used in the literature. Finally we incorporate this improved extinction correction into the star formation rate density measurement and report rho*~0.24+/-0.06 Msun yr^-1 Mpc^-3.
description: 11 pages, 10 figures, accepted for publication in MNRAS
Effect of anadenanthera colubrina protease inhibitors a Paulinos an inflammatory mediator
Creators: name: Guarneire, Gracimério J
name: Junior, Oswaldo Cardoso
name: Lima, Nerilson Marques
name: Santos, Emanuel Aguilar
name: Schulze, Caio Aguiar
name: Silva, Wellington Pereira
name: Batista, João Pedro Oliveira
name: de Paula Carli, Gabriela
name: Castro, Sandra Br
name: Alves, Caio Cesar S
name: Carli, Alessandra P
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Pharmacology
subject: Biotechnology
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: Cancer
subject: Hematology

description: This work aimed to obtain and characterize protease inhibitors from A. colubrina leaves and evaluate their potential as inflammatory mediator and cell viability. The protein extract was analyzed and characterized by SDS-PAGE, RP-HPLC-PDA, MALDI-TOF/MS and Zeta potential. Bioassays were conducted in order to evaluate the cell viability in RAW 264.7, in vitro (NO and TNF-α production inhibition) and in vivo anti-inflammatory potential, inhibition rate of trypsin and hemagglutination activity from protein extract. The results revealed the presence of bands at 14, 21 and 30 kDa in SDS-PAGE, the RP-HPLC-PDA analysis showed peaks at 12, 13, 28 and 40 minutes and MALDI-TOF/MS showed peaks with 3.4, 4.7, 5.6, 9.4 and 11.2 kDa. The protein extracts presented enzymatic activity inhibition of trypsin (IC50 59.2 μgmL−1), did not show any cytotoxicity to RAW264.7 cells, hemagglutination 8HU and insignificant reduction in NO and TNF-α production and reduced anti-inflammatory potential in vivo compared to dexamethasone.
Bioactive constituents from seeds of Annona Senegalensis Persoon (Annonaceae)
Creators: name: Tamfu, Alfred Ngenge
name: Fotsing, Maurice Tagatsing
name: Talla, Emmanuel
name: Jabeen, Almas
name: Tanyi, Joseph Mbafor
name: Shaheen, Farzana
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Column chromatography led to the isolation and full characterization of N-cerotoyltryptamine (1) previously described in a mixture of 5 compounds, asimicin (2) and ent-19-Carbomethoxykauran-17-oic acid (3) isolated from this species for first time alongside stigmasterol glycoside (4) and lacceroic acid (5). The structures of the compounds were established by extensive EIMS, HRESIMS, 1 D and 2 D NMR studies. Compound 1 and the extract AS were more potent inhibitors of ROS with IC50 values of 2.7 ± 0.1 µg/mL and 8.7 ± 10.2 µg/mL respectively than Ibuprofen (11.2 ± 1.9 µg/mL) as a standard anti-inflammatory drug. Compound 2 showed high inhibition on nitric oxide (IC50 = 3.9 ± 0.2 µg/mL), almost 6 times more active than the standard compound L-NMMA (IC50 = 24.2 ± 0.8 µg/mL) used. Compounds showed relatively low toxicity on NIH-3T3 fibroblast cells compared to standard. The results indicate that compounds 1 and 2 are potent anti-inflammatory drug candidates.
Speeding up SAT solver by exploring CNF symmetries : Revisited
Creators: name: Ghosh, Arup Kumar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 68R10

description: Boolean Satisfiability solvers have gone through dramatic improvements in their performances and scalability over the last few years by considering symmetries. It has been shown that by using graph symmetries and generating symmetry breaking predicates (SBPs) it is possible to break symmetries in Conjunctive Normal Form (CNF). The SBPs cut down the search space to the nonsymmetric regions of the space without affecting the satisfiability of the CNF formula. The symmetry breaking predicates are created by representing the formula as a graph, finding the graph symmetries and using some symmetry extraction mechanism (Crawford et al.). Here in this paper we take one non-trivial CNF and explore its symmetries. Finally, we generate the SBPs and adding it to CNF we show how it helps to prune the search tree, so that SAT solver would take short time. Here we present the pruning procedure of the search tree from scratch, starting from the CNF and its graph representation. As we explore the whole mechanism by a non-trivial example, it would be easily comprehendible. Also we have given a new idea of generating symmetry breaking predicates for breaking symmetry in CNF, not derived from Crawford's conditions. At last we propose a backtrack SAT solver with inbuilt SBP generator.
description: 12 pages, Forty-First Southeastern International Conference on Combinatorics, Graph Theory, and Computing (USA, 2010)
PACifying Alemão : articulations of public security, market formalization, and autoconstruction in Rio de Janeiro
Creators: name: Prouse, Valerie Carolyn
Publisher: name: University of British Columbia
Year: 2017

description: The complex of favelas known as Complexo do Alemão in Rio de Janeiro, Brazil has recently been targeted by two large-scale state projects: infrastructural upgrading via the country’s Growth Acceleration Program (PAC, or “urbanization”) and military police occupation via the Police Pacifying Unit program (UPP, or “pacification”). In this dissertation I focus on the various regimes of power, profit, and discourse that constitute these state presences. Based on participant observation, interviews, policy analysis, and popular discourse analysis, I argue that a global urban research agenda requires theorizing in historically and geographically-situated ways. Inspired by the Gramscian tradition, by Brazilian urbanists, by modernity/coloniality scholars of Latin America, and by local activists, I develop a conceptual framework that integrates four different characteristics of urbanization projects. They are informed by historical processes; shaped by flows of capital, people, and policy; negotiated between civil society and state; and influenced by myriad regimes of power. Through this framework I make two related arguments. First, I argue that PAC and pacification strategies overlap in a nexus that I call PACification. PACification joins together marketization, the construction of racialized threats, and violent securitization. It manifests in strategies to attract international investment, extend microfinance, enroll people in mortgages, and foment entrepreneurial behavior, often informed by military police violence. Second, I argue that residents’ and activists’ modes of autoconstruction – in which people build their own communities often over generations – are central to the contemporary manifestation of PACification. Presently, residents are not only building communities out of bricks and mortar, but also through discourses, images, texts, and digital practices in order to safeguard their neighbours and to improve their daily lives.
Extracting the photoproduction cross section off the neutron gn-->pi-p from deuteron data with FSI effects
Creators: name: Tarasov, V. E.
name: Briscoe, W. J.
name: Gao, H.
name: Kudryavtsev, A. E.
name: Strakovsky, I. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The incoherent pion photoproduction reaction gd-->pi-pp is considered theoretically in a wide energy region Eth =< Eg =< 2700 MeV. The model applied contains the impulse approximation as well as the NN- and piN-FSI amplitudes. The aim of the paper is to study a reliable way for getting the information on elementary gn-->pi-p reaction cross section beyond the impulse approximation for gd-->pi-pp. For the elementary gN-->piN, NN-->NN, and piN-->piN amplitudes, the results of the GW DAC are used. There are no additional theoretical constraints. The calculated cross section dSigma/dOmega(gd->pi-pp) are compared with existing data. The procedure used to extract information on the differential cross section dSigma/dOmega(gn-->pi-p) on the neutron from the deuteron data using the FSI correction factor R is discussed. The calculations for R versus pi-p CM angle θ_1 of the outgoing pion are performed at different photon-beam energies with kinematical cuts for "quasi-free" process gn-->pi-p. The results show a sizeable FSI effect R \neq 1 from S-wave part of pp-FSI at small angles close to θ_1 ~ 0: this region narrows as the photon energy increases. At larger angles, the effect is small (|R-1|<<1) and agrees with estimations of FSI in the Glauber approach.
description: 28 pages, 5 figures, 1 table
Premessa
Creators: name: Lussone, Teresa M.
Publisher: name: SigMa - Rivista di Letterature comparate, Teatro e Arti dello spettacolo
Year: 2018

description: Premessa alla sezione monografica Di fronte all’evento. La rappresentazione della cronaca nelle arti contemporanee, a cura di Teresa Lussone e Gennaro Schiano.
description: SigMa - Rivista di Letterature comparate, Teatro e Arti dello spettacolo, N. 2 (2018)
L’“Arianna” di Giuseppe Salomoni (1776): la trasformazione del ballo italiano nel secondo Settecento
Creators: name: Pappacena, Flavia
Publisher: name: SigMa - Rivista di Letterature comparate, Teatro e Arti dello spettacolo
Year: 2018

description: Attraverso l’analisi di libretti d’opera e di ballo dal 1760 al 1782, si ricostruiscono le diverse tappe che portarono Giuseppe Salomoni (1730-1805), noto esponente del “genere grottesco”, a reagire alle linee estetiche emergenti nell’ambito del balletto europeo e ad avviare un processo di riqualificazione del ballo tradizionale italiano mirante a valorizzare gli aspetti espressivi in una nuova ottica drammatica.
description: SigMa - Rivista di Letterature comparate, Teatro e Arti dello spettacolo, N. 1 (2017)
Mutagenic and cytostatic activities of the Xylopia laevigata essential oil in human lymphocytes
Creators: name: Pereira, Tais Susane
name: Esquissato, Giovana Natiele Machado
name: Vilaça Costa, Emmanoel
name: de Lima Nogueira, Paulo Cesar
name: Avezum Alves de Castro-Prado, Marialba
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 60506 Virology

description: Hydro-distilled essential oil from leaves of Xylopia laevigata was characterized by GC-MS. Twenty-seven components were identified and the oil’s major constituents comprised germacrene D, bicyclogermacrene, (E)-caryophyllene and germacrene B. The cytotoxicity of the essential oil of X. laevigata (EOXL), determined by MTT and mitotic index methods in cultured human lymphocytes was observed in all tested concentrations. Cultures treated with EOXL demonstrated significant increase in the frequencies of micronuclei in the cytokinesis-block micronucleus assay (CBMN) and reduction of the cytokinesis-block proliferation index (CBPI) rates. Results demonstrated the cytostatic and mutagenic effects of EOXL, the latter for the first time.
Data generated and analyzed for manuscript "Linking photoacclimation responses and microbiome shifts between depth-segregated sibling species of reef corals"
Creators: name: López-Londoño, Tomás
name: Prada, Carlos
name: Knowlton, Nancy
name: Levitan, Don R.
name: Roitman, Sofia
name: B. Ritchie, Kimberly
name: Pollock, F. Joseph
name: M. Woodley, Cheryl
name: Iglesias-Prieto, Roberto
name: Medina, Mónica
Publisher: name: figshare
Year: 2022
Subjects: subject: 60806 Animal Physiological Ecology
subject: FOS: Biological sciences
subject: 60303 Biological Adaptation
subject: 60203 Ecological Physiology
subject: Evolutionary Biology
subject: Marine Biology
subject: Microbiology
subject: Physiology

description: Files for the Microbiome Analysis:“orb_micro_analysis_group_comparison_v12.Rmd”: R Markdown file with the code for the analysis of the microbiome dataset“otu_table_mc2_wtax_no_pynast_failures_no_organelles_no_staphylococcus_no_unknown_reciprocal_transplant_only.biom”: OTUs abundance table and taxonomy information.“rep_set.tre”: phylogenetic tree“rt_map_v8_no_hash.txt”: sample metadata file
Files for the Symbiodiniaceae Analysis:“ITS2.profiles.relative.abund_and_meta”: relative abundance and metadata file of ITS2 type profiles of Symbiodiniaceae detected in coral samples.“pre_med_master_seqs.fasta”: Fasta file containing ITS2 sequences from samples that have been through the SymPortal quality control pipeline, but have not been through Minimum Entropy Decomposition (Hume et al., 2019).“seqs.relative.abund_and_meta”: Fasta file containing ITS2 sequences from samples that have been through the SymPortal quality control pipeline and Minimum Entropy Decomposition (Hume et al., 2019).
Files for the physiological analysis (Qm)“AnalysisQmDepthGradient”: R Markdown file with the analysis of the relationship between Qm and depth for each species.
“QmGradient.xlsx”: File with Qm data used as input for the linear regression analysis.
Cytotoxic p-terphenyls from the deep-sea-derived Aspergillus candidus
Creators: name: Lin, Yu-Kun
name: Xie, Chun-Lan
name: Xing, Cui-Ping
name: Wang, Bao-Qu
name: Tian, Xiao-Xue
name: Xia, Jin-Mei
name: Jia, Ling-Yun
name: Pan, Ying-Ni
name: Yang, Xian-Wen
Publisher: name: Taylor & Francis
Year: 2019
Subjects: 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: From the deep-sea-derived fungus Aspergillus candidus, one novel (1) and three known (2–4) p-terphenyl derivates were isolated. The structure of the new compound was established mainly on the basis of extensive analysis of 1D and 2D NMR data. All four isolates were tested for in vitro anti-food allergic and antitumor bioactivities. Compounds 3 and 4 showed potent antiproliferative effect against four cancer cells of Hela, Eca-109, Bel-7402, and PANC-1 with IC50 values ranging from 5.5 μM to 9.4 μM.
Plinia cauliflora (Mart.) Kausel: toxicological assays, biological activities, and elemental analysis of organic compounds
Creators: name: de Assis, Pollyana Mendonça
name: Dutra, Rafael Cypriano
name: Amarante, Cristine Bastos do
name: Chaves, Maria das Graças Afonso Miranda
name: de Souza Moreira, Carolina Paula
name: Brandão, Marcos Antônio Fernandes
name: Raposo, Nádia Rezende Barbosa
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
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: Cancer
subject: Plant Biology
subject: FOS: Biological sciences

description: Jaboticaba, Plinia cauliflora (Mart.) Kausel, is a Brazilian berry traditionally used in folk medicine as treatment for some health conditions. Phenolic compounds such as flavonoids and anthocyanins have previously been detected in the fruit. This current study aimed to evaluate the toxicological effects of jaboticaba peel extract (JPE) on Artemia salina, L929, and MDA-MB-231 cell lines. Besides, JPE antioxidant, acetylcholinesterase, and antifungal activities, and elemental analysis CHNS were also tested. JPE had moderate toxicity (LD50 = 360.92 μg mL−1) on A. salina, non-toxic effect on L929 cell line, and decreased the viability of cancer cell line MDA at 1,000 µg mL−1 and 500 µg mL−1 concentrations. The antioxidant activity toward 2,2-diphenyl-1-picrylhydrazyl (DPPH) performed IC50 = 37.45 ± 0.17 µg mL−1, whereas 45.7% of acetylcholinesterase activity was inhibited. By its elemental composition, JPE is an alternative food supplement and dermocosmetic component. Antifungal potential toward Candida strains was not observed.
An asymptomatic and persistent enteric virus is restricted from causing disease by the host immune system in a STAT1-dependent manner
Creators: name: Filyk, Heather
Publisher: name: University of British Columbia
Year: 2017

description: Mammalian evolution has occurred while hosting mutualistic, commensal, and pathogenic micro- and macro-organisms for millennia. The virome can provide beneficial immune-stimulating signals or it can provide detrimental immune-stimulating signals that impact host health. Mechanisms that are important for relaying signals from the virome to the immune system are not well understood. Here I investigate the importance of a signalling molecule, Signal Transducer and Activator of Transcription-1 (STAT1), in controlling the immune response to an asymptomatic and persistent virus infection by murine Norovirus strain CR6 (CR6). By evaluating clinical parameters and virus-specific adaptive immune responses I was able to better understand how the host can coordinate appropriate immune responses to persistent enteric virus infections. Moreover, I confirmed that host-virome signals could limit CR6 burdens and systemic dissemination in immunosufficient mice. I conclude with a new perspective of how CR6 persists asymptomatically; by therapeutically limiting CR6 replication, I uncovered that unlike other persistent virus infections CR6 persistence may not be due to the apparent weak immune responses against it. Importantly, CR6 persistence requires STAT1 signalling, because deficient signalling leads to uncontrolled virus replication and ultimately host mortality, which limits virus transmission potential
Note on gradient estimate of heat kernel for Schrödinger operators
Creators: name: Zheng, Shijun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 35J10, 42B37

description: Let $H=-Δ+V$ be a Schrödinger operator on $\mathbb{R}^n$. We show that gradient estimates for the heat kernel of $H$ with upper Gaussian bounds imply polynomial decay for the kernels of certain smooth dyadic spectral operators. The latter decay property has been known to play an important role in the Littlewood-Paley theory for $L^p$ and Sobolev spaces. We are able to establish the result by modifying Hebisch and the author's recent proofs. We give a counterexample in one dimension to show that there exists $V$ in the Schwartz class such that the long time gradient heat kernel estimate fails.
Color Transparency at COMPASS energies
Creators: name: Miller, Gerald A.
name: Strikman, Mark
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Pionic quasielastic knockout of protons from nuclei at 200 GeV show very large effects of color transparency as -t increases from 0 to several GeV^2. Similar effects are expected for quasielastic photoproduction of vector mesons.
description: 9 pages, 4 figures
Linear Systems on Edge-Weighted Graphs
Creators: name: James, Rodney
name: Miranda, Rick
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let R be any subring of the reals. We present a generalization of linear systems on graphs where divisors are R-valued functions on the set of vertices and graph edges are permitted to have nonegative weights in R. Using this generalization, we provide an independent proof of a Riemann-Roch formula, which implies the Riemann-Roch formula of Baker and Norine.
description: 11 pages
Data generated and analyzed for manuscript "Linking photoacclimation responses and microbiome shifts between depth-segregated sibling species of reef corals"
Creators: name: López-Londoño, Tomás
name: Prada, Carlos
name: Knowlton, Nancy
name: Levitan, Don R.
name: Roitman, Sofia
name: B. Ritchie, Kimberly
name: Pollock, F. Joseph
name: M. Woodley, Cheryl
name: Iglesias-Prieto, Roberto
name: Medina, Mónica
Publisher: name: figshare
Year: 2022
Subjects: subject: 60806 Animal Physiological Ecology
subject: FOS: Biological sciences
subject: 60303 Biological Adaptation
subject: 60203 Ecological Physiology
subject: Evolutionary Biology
subject: Marine Biology
subject: Microbiology
subject: Physiology

description: Files for the Microbiome Analysis:“orb_micro_analysis_group_comparison_v12.Rmd”: R Markdown file with the code for the analysis of the microbiome dataset“otu_table_mc2_wtax_no_pynast_failures_no_organelles_no_staphylococcus_no_unknown_reciprocal_transplant_only.biom”: OTUs abundance table and taxonomy information.“rep_set.tre”: phylogenetic tree“rt_map_v8_no_hash.txt”: sample metadata file
Files for the Symbiodiniaceae Analysis:“ITS2.profiles.relative.abund_and_meta”: relative abundance and metadata file of ITS2 type profiles of Symbiodiniaceae detected in coral samples.“pre_med_master_seqs.fasta”: Fasta file containing ITS2 sequences from samples that have been through the SymPortal quality control pipeline, but have not been through Minimum Entropy Decomposition (Hume et al., 2019).“seqs.relative.abund_and_meta”: Fasta file containing ITS2 sequences from samples that have been through the SymPortal quality control pipeline and Minimum Entropy Decomposition (Hume et al., 2019).
Radiation by a heavy quark in N=4 SYM at strong coupling
Creators: name: Hatta, Y.
name: Iancu, E.
name: Mueller, A. H.
name: Triantafyllopoulos, D. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the AdS/CFT correspondence in the supergravity approximation, we compute the energy density radiated by a heavy quark undergoing some arbitrary motion in the vacuum of the strongly coupled N=4 supersymmetric Yang-Mills theory. We find that this energy is fully generated via backreaction from the near-boundary endpoint of the dual string attached to the heavy quark. Because of that, the energy distribution shows the same space-time localization as the classical radiation that would be produced by the heavy quark at weak coupling. We believe that this and some other unnatural features of our result (like its anisotropy and the presence of regions with negative energy density) are artifacts of the supergravity approximation, which will be corrected after including string fluctuations. For the case where the quark trajectory is bounded, we also compute the radiated power, by integrating the energy density over the surface of a sphere at infinity. For sufficiently large times, we find agreement with a previous calculation by Mikhailov [hep-th/0305196].
description: 22 pages
Density oscillations in trapped dipolar condensates
Creators: name: Lu, H. -Y.
name: Lu, H.
name: Zhang, J. -N.
name: Qiu, R. -Z.
name: Pu, H.
name: Yi, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigated the ground state wave function and free expansion of a trapped dipolar condensate. We find that dipolar interaction may induce both biconcave and dumbbell density profiles in, respectively, the pancake- and cigar-shaped traps. On the parameter plane of the interaction strengths, the density oscillation occurs only when the interaction parameters fall into certain isolated areas. The relation between the positions of these areas and the trap geometry is explored. By studying the free expansion of the condensate with density oscillation, we show that the density oscillation is detectable from the time-of-flight image.
description: 7 pages, 9 figures
Developing surgical navigation tools for minimally invasive surgery using ultrasound, structured light, tissue tracking and augmented reality.
Creators: name: Edgcumbe, Philip
Publisher: name: University of British Columbia
Year: 2018

description: Surgeons and their patients would benefit if, during an operation, a surgeon could inexpensively, safely and non-invasively peer beneath the surface of the organ s/he was operating on. Peering below the surface would allow the surgeon to see blood vessels, tumours and other important structures. Furthermore, it would allow them to better plan their surgery and avoid damaging important structures with their tools. Giving surgeons the ability to peer beneath the surface and better formulate their surgical plan is the goal of image guided surgery research and the focus of this thesis. In this thesis accurate 3D models of cancer tumour phantoms are generated and displayed to the surgeon. This is achieved via the development of: an ultrasound calibration technique (Chapter 2); the augmented reality ultrasound navigation system (ARUNS) (Chapter 3); a miniature projector for surgery called the Pico Lantern (Chapter 4); and the Projector-based Augmented Reality Intracorporeal System (PARIS)(Chapter 5). The ultimate goal is to improve surgical navigation which will help surgeons be more accurate and reduce the amount of healthy tissue they excise during operations. The ultrasound calibration technique improved ultrasound-based pinhead point reconstruction accuracy from 3.1mm to 1.3mm. The Pico Lantern and the PARIS were developed to improve surface reconstruction and to improve the realism of the augmented reality in surgery. The Pico Lantern is a miniature projector for surface reconstruction, augmented reality and guidance in laparoscopic surgery. The PARIS was tested by two surgeons in a user study of 32 simulated kidney cancer surgeries. Compared to using a laparoscopic ultrasound transducer alone, when using the PARIS, surgeons found the surgical navigation more intuitive and they had a better spatial understanding of the underlying anatomy. Furthermore, positive margin rates decreased and there was a statistically significant reduction in the amount of healthy tissue excised. Key conclusions are that wide baseline ultrasound calibration is effective, simple guidance cues are important in augmented reality in surgery and that projected light in surgery is a viable strategy for surface reconstruction and augmented reality.
Lesion Border Detection in Dermoscopy Images
Creators: name: Celebi, M. Emre
name: Iyatomi, Hitoshi
name: Schaefer, Gerald
name: Stoecker, William V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4.6

description: Background: Dermoscopy is one of the major imaging modalities used in the diagnosis of melanoma and other pigmented skin lesions. Due to the difficulty and subjectivity of human interpretation, computerized analysis of dermoscopy images has become an important research area. One of the most important steps in dermoscopy image analysis is the automated detection of lesion borders. Methods: In this article, we present a systematic overview of the recent border detection methods in the literature paying particular attention to computational issues and evaluation aspects. Conclusion: Common problems with the existing approaches include the acquisition, size, and diagnostic distribution of the test image set, the evaluation of the results, and the inadequate description of the employed methods. Border determination by dermatologists appears to depend upon higher-level knowledge, therefore it is likely that the incorporation of domain knowledge in automated methods will enable them to perform better, especially in sets of images with a variety of diagnoses.
description: 10 pages, 1 figure, 3 tables
Modelo de negocios del Instituto Interamericano de Cooperación para la Agricultura
Creators: name: Hernández, Hombray Taylor
name: Malavé Figueroa, Adelso Nikolai
Publisher: name: figshare
Year: 2022
Subjects: subject: 140201 Agricultural Economics
subject: FOS: Economics and business
subject: 140399 Econometrics not elsewhere classified
subject: Economics

description: The objective of the study was to identify analytical proposals for the redefinition and updating of IICA's business model, in recognition of the challenges of the agricultural sector in the Americas and as an effort to guarantee the profitability of projects in rural areas. The research was exploratory, with qualitative design and the application of the hermeneutical method for documentary analysis, around sources located in the institutional repository, in addition to a comparative analysis of experiences regarding financial sustainability in similar organizations. The findings obtained were contrasted with the expert opinion of qualified IICA personnel, which was conducted through personalized interviews. The main result of the study showed three major imperative needs to increase financial sustainability: 1) optimize the skills of the technical reports, 2) improve the efficiency of institutional management processes and, 3) expand the portfolio of external funds projects. It is concluded that IICA needs urgent instrumentation adjustments on financial reengineering, through the activation of profitable and competitive tools, as well as an acute extension of opportunities for savings, productivity and cooperation with new clients and business partners.
Fighting multidrug resistance with a fruit extract: anti-cancer and anti-biofilm activities of Acca sellowiana
Creators: name: Dell’Olmo, Eliana
name: Gaglione, Rosa
name: Pane, Katia
name: Sorbo, Sergio
name: Basile, Adriana
name: Esposito, Sergio
name: Arciello, Angela
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: In this study, the efficacy of Acca sellowiana fruit acetonic extract on human MDR cancer cells was tested for the first time, and it was demonstrated that the fruit extract is effective on both sensitive and resistant tumor cells. The effects of A. sellowiana extract on bacterial biofilm were also examined for the first time. By crystal violet assays and confocal microscopy analyses, it was demonstrated that the plant extract is able to strongly inhibit biofilm formation of both sensitive and resistant bacterial strains. Furthermore, antimicrobial activity assays and TEM analyses clearly demonstrated the effectiveness of plant extract on planktonic bacterial cells in both sensitive and resistant strains. Altogether, these findings intriguingly expand the panel of activities of A. sellowiana fruit extract with respect to previous reports, and open interesting perspectives to its therapeutic applications.