cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Freezing E3-brane instantons with fluxes
Creators: name: Bianchi, Massimo
name: Collinucci, Andres
name: Martucci, Luca
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: E3-instantons that generate non-perturbative superpotentials in IIB N=1 compactifications are more frequent than currently believed. Worldvolume fluxes will typically lift the E3-brane geometric moduli and their fermionic superpartners, leaving only the two required universal fermionic zero-modes. We consistently incorporate SL(2, Z) monodromies and world-volume fluxes in the effective theory of the E3-brane fermions and study the resulting zero-mode spectrum, highlighting the relation between F-theory and perturbative IIB results. This leads us to a IIB derivation of the index for generation of superpotential terms, which reproduces and generalizes available results. Furthermore, we show how worldvolume fluxes can be explicitly constructed in a one-modulus compactification, such that an E3-instanton has exactly two fermonic zero-modes. This construction is readily applicable to numerous scenarios.
description: 8 pages. Proceedings of the "XVII European Workshop on String Theory 2011", Padova, Italy, 5-9 September 2011
Comparative in vitro resistance of human periodontal bacterial pathogens to tinidazole and four other antibiotics
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: anti-infective agents
periodontitis
drug resistance
in vitro
periodontal pocket
tinidazole
metronidazole
doxycycline
amoxicillin
clindamycin

description: © 2020, MDPI AG. All rights reserved. The in vitro resistance of selected red/orange complex periodontal pathogens to tinidazole was compared with four other antibiotics. Subgingival biofilm samples from 88 adults with severe periodontitis were anaerobically incubated on enriched Brucella blood agar with and without supplementation with tinidazole (16 mg/L), metronidazole (16 mg/L), amoxicillin (8 mg/L), doxycycline (4 mg/L), or clindamycin (4 mg/L). Growth of Porphyromonas gingivalis, Tannerella forsythia, Prevotella intermedia/nigrescens, Parvimonas micra, Fusobacterium nucleatum, Streptococcus constellatus, or Campylobacter rectus on antibiotic-supplemented plates indicated their in vitro antibiotic resistance. Tinidazole inhibited all test species, except P. intermedia/nigrescens, P. micra, and S. constellatus in 3.8%, 10.2%, and 88.9% of species-positive patients, respectively. Significantly fewer patients yielded tinidazole-resistant test species, and had significantly lower subgingival proportions of tinidazole-resistant organisms, than patients with amoxicillin, doxycycline, or clindamycin-resistant species, but not those with metronidazole-resistant strains. Joint in vitro species resistance to tinidazole and amoxicillin, or metronidazole and amoxicillin, was rare. Tinidazole performed in vitro similar to metronidazole, and markedly better than amoxicillin, doxycycline, or clindamycin, against fresh clinical isolates of red/orange complex periodontal pathogens. As a result of its similar antimicrobial spectrum, and more convenient once-a-day oral dosing, tinidazole should be considered in place of metronidazole for systemic periodontitis drug therapy.
The thermosensory diguanylate cyclase (tdcA)
Creators: name: Randall, Trevor Ethan
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Biology--Cell
subject: Microbiology
subject: FOS: Biological sciences
subject: Biology--Molecular
subject: Biochemistry
subject: Signal Transduction
subject: c-di-GMP
subject: Pseudomonas aeruginosa
subject: thermosensation

description: Biofilm production in Pseudomonas aeruginosa is regulated by the intracellular secondary messenger cyclic diguanylate (c-di-GMP). C-di-GMP is produced by diguanylate cyclases (DGCs) and degraded by phosphodiesterases (PDEs). C-di-GMP controls motility, biofilm formation and virulence factor production in many bacteria. While much is known about how DGCs and PDEs synthesize and degrade c-di-GMP, respectively, little is understood about how environmental stimuli modulate enzyme activity. We identified the thermosensing diguanylate cyclase (tdcA) which allows for the thermoregulation of biofilm formation in P. aeruginosa. Activity assays revealed that TdcA activity increased ~35 fold as the temperature of the system increased from environmental to body temperature. Further, analysis revealed that TdcA acts as a thermostat, allowing for TdcA activity to be modulated by temperature. Our results demonstrate that TdcA is a DGC that acts as a molecular thermostat in P. aeruginosa.
Pair density waves and vortices in an elongated two-component Fermi gas
Creators: name: Wei, Ran
name: Mueller, Erich J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the vortex structures of a two-component Fermi gas experiencing a uniform effective magnetic field in an anisotropic trap that interpolates between quasi-one dimensional (1D) and quasi-two dimensional (2D). At a fixed chemical potential, reducing the anisotropy (or equivalently increasing the attractive interactions or increasing the magnetic field) leads to instabilities towards pair density waves, and vortex lattices. Reducing the chemical potential stabilizes the system. We calculate the phase diagram, and explore the density and pair density. The structures are similar to those predicted for superfluid Bose gases. We further calculate the paired fraction, showing how it depends on chemical potential and anisotropy.
description: 6 pages, 3 figures
Beam-energy dependence of identified two-particle angular correlations ins root s(NN)=7.7-200 GeV Au + Au collisions
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: nucl-ex

description: The two-particle angular correlation functions, $R_2$, of pions, kaons, and protons in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV were measured by the STAR experiment at RHIC. These correlations were measured for both like-sign and unlike-sign charge combinations and versus the centrality. The correlations of pions and kaons show the expected near-side ({\it i.e.}, at small relative angles) peak resulting from short-range mechanisms. The amplitudes of these short-range correlations decrease with increasing beam energy. However, the proton correlation functions exhibit strong anticorrelations in the near-side region. This behavior is observed for the first time in an A+A collision system. The observed anticorrelation is $p_{T}$-independent and decreases with increasing beam energy and centrality. The experimental results are also compared to the Monte Carlo models UrQMD, Hijing, and AMPT.
Dislocation core field. II. Screw dislocation in iron
Creators: name: Clouet, Emmanuel
name: Ventelon, Lisa
name: Willaime, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dislocation core field, which comes in addition to the Volterra elastic field, is studied for the <111> screw dislocation in alpha-iron. This core field, evidenced and characterized using ab initio calculations, corresponds to a biaxial dilatation, which we modeled within the anisotropic linear elasticity. We show that this core field needs to be considered when extracting quantitative information from atomistic simulations, such as dislocation core energies. Finally, we look at how dislocation properties are modified by this core field, by studying the interaction between two dislocations composing a dipole, as well as the interaction of a screw dislocation with a carbon atom.
Local composition detouring for defect-free compositionally graded materials in additive manufacturing
Creators: name: Kim, Eun Seong
name: Park, Jeong Min
name: Karthik, Gangaraju Manogna
name: Kim, Kyung Tae
name: Yu, Ji-Hun
name: Lee, Byeong-Joo
name: Kim, Hyoung Seop
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Computational Biology

description: This study investigated cracking phenomena in 316L stainless steel (SS316L) and Inconel 718 (IN718) composition-graded material (CGM) additively manufactured by the direct energy deposition (DED) process. In order to prevent cracking in the CGM, thermodynamic analysis was performed to avoid the critical concentration for crack formation. Based on the local compositional detouring (LCD) method suggested by new approach, a crack-free CGM with a nonlinear combination of SS316L and IN718 was successfully fabricated with local additional elemental powder in the CGM defective region obtained using a multi-powder feeding system during the DED process. We aim to avoid the cracks of functionally graded materials fabricated by local in-situ alloying technique using the result of thermodynamically analyzing.
Peace, love, and pi : imagining a world where Paris Hilton loves mathematics
Creators: name: Vakharia, Vanessa
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is a conceptual piece that explores how incorporating marketing theory and notions of cool into the realm of mathematics education may help to prevent qualified female students from self-selecting out of mathematics. It begins by exploring current perspectives on the problem of female attrition in educational and career trajectories involving math. Focusing on girls from Toronto, Ontario, who generally see themselves as part of the mainstream culture, this thesis speculates as to how these girls understand mathematics and their relationship to mathematics. The central purpose of this research is to understand whether these girls choose not to pursue math beyond the compulsory level because they are selecting courses to construct their identity on the basis of cool, using the same evaluation process they would when selecting products for consumption. Drawing extensively on literature, this thesis presents a novel perspective with which to view female disinterest in mathematics. This conceptual framework is then illuminated with participants’ data obtained through qualitative methodology to provide an experiential account of the conceptual. Grounding the empirical data atop the conceptual brings to life the interconnection of perspectives of scholars such as Walkerdine, Mendick, Demetriou, and Gladwell, illustrating how femininity, consumerism, and mathematics comprise our socially constructed reality. This thesis argues that treating math as a consumer good by marketing it accordingly might give rise to increased mathematical participation and enthusiasm by this particular segment of girls who rely on identity marketing for many of their consumption decisions. Finally, this argument is illuminated by a sample marketing plan that provides a practical example of how the ideas emergent from this study might applied. In conclusion, this thesis addresses the limitations and controversies that arise from the use of marketing as a means to promote education, the challenges of unfixing and subverting femininity, and the macro level possibilities that are opened up with the help of a micro level nudge in a different direction.
Cluster-Cluster Lensing and the Case of Abell 383
Creators: name: Zitrin, Adi
name: Rephaeli, Yoel
name: Sadeh, Sharon
name: Medezinski, Elinor
name: Umetsu, Keiichi
name: Sayers, Jack
name: Nonino, Mario
name: Morandi, Andrea
name: Molino, Alberto
name: Czakon, Nicole
name: Golwala, Sunil R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Extensive surveys of galaxy clusters motivate us to assess the likelihood of cluster-cluster lensing (CCL), namely, gravitational-lensing of a background cluster by a foreground cluster. We briefly describe the characteristics of CCLs in optical, X-ray and SZ measurements, and calculate their predicted numbers for $Λ$CDM parameters and a viable range of cluster mass functions and their uncertainties. The predicted number of CCLs in the strong-lensing regime varies from several ($<10$) to as high as a few dozen, depending mainly on whether lensing triaxiality bias is accounted for, through the c-M relation. A much larger number is predicted when taking into account also CCL in the weak-lensing regime. In addition to few previously suggested CCLs, we report a detection of a possible CCL in A383, where background candidate high-$z$ structures are magnified, as seen in deep Subaru observations.
description: 9 pages, 5 figures, submitted to MNRAS
Studies On Synthesis, Microstructure and Transport Properties of Doped Cerium Oxides
Creators: name: Handal, Hala
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Energy
subject: Materials Science
subject: Physical science
subject: Materials Science
subject: Energy

description: Acceptor-doped ceria exhibits mixed ionic electronic conduction in reducing conditions and chemical stability against sulfur poisoning and coking. This thesis’s primary goal is to explore new anode materials based on ceria–solid solutions for solid oxide fuel cells (SOFCs). The physicochemical and electrochemical performance of Ce0.9–xY0.1MnxO2–δ (x = 0 to 15 mol%) (CYMO) and Ce0.87Y0.1Mn0.01N0.02O2-δ (N = Mg or Ca) were studied. Among the materials investigated in this study, Ce0.89Y0.1Mn0.01Mg0.02O2–δ (Mg-CYMO) showed the highest total conductivity of 0.2 S cm−1 at 700 °C in H2. An area specific polarization resistance of 0.23 Ω cm2 was observed for both Mg-CYMO and Ce0.8Y0.1Mn0.1O2-δ (10CYMO) at 800 °C, in wet H2. Chronoamperometric measurement for the symmetrical cell configuration based on 10CYMO electrodes showed stable performance upon exposure to 10 ppm H2S/H2. In a full cell configuration, 10CYMO (anode)/YSZ (electrolyte)/La0.8Sr0.2MnO3 (LSM)-YSZ cathode, polarization resistance of 1.4 Ω cm2 and power density of 75 mW/cm2 were obtained at 800 °C in wet H2. The main challenge of employing proton-conducting electrolytes in SOFC is their poor chemical stability in the presence of steam and hydrocarbon fuels. Another goal of this thesis is to develop a chemically stable proton-conducting electrolyte for SOFCs. The effects of Fe and Co substitution on the electrical and physicochemical properties of BaCe0.9Sm0.1O3–δ (BCS) were evaluated. Thermogravimetric analysis showed that incorporation of 5 to 10 mol% Fe or Co in BCS did not improve the chemical stability in CO2 at elevated temperatures. The BCSC10 sample sintering at 1400 °C showed the highest electrical conductivity of 0.02 S cm-1 at 600 °C in air, but it did not show any appreciable proton mobility under humidified atmosphere.
Hippolyte obliquimanus Dana 1852
Creators: name: Almeida, Alexandre Oliveira De
name: Guerrazzi, Maria Cec Lia
name: Coelho, Petr Ȏ Nio Alves
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Hippolytidae
Hippolyte
Hippolyte obliquimanus

description: Hippolyte obliquimanus Dana, 1852
Material examined (N=13). 2m, 12/VI/2004, St. 0 1 (MZUESC #662); 3f, 07/V/2004, St. 0 1 (MZUESC #740); 1m, 1f, 18/XII/2004, St. 0 1 (MZUESC #741).
Distribution. Western Atlantic – North Carolina, Florida, Antilles, Venezuela, and Brazil (Bahia and Rio de Janeiro) (Udekem d'Acoz 1997).
Habitat: Shallow waters, among algae and seagrass meadows (Udekem d'Acoz 1997).
Previous records in Bahia. Udekem d'Acoz (1997).
Remarks. Udekem d'Acoz (1997) established H. exilirostratus Dana, 1852, and H. curacaoensis Schmitt, 1924, both previously cited from Brazil (Coelho & Ramos 1972; Christoffersen 1998), as junior synonyms of H. obliquimanus.
description: Published as part of Almeida, Alexandre Oliveira De, Guerrazzi, Maria Cec Lia & Coelho, Petr Ȏ Nio Alves, 2007, Stomatopod and decapod crustaceans from Camamu Bay, state of Bahia, Brazil, pp. 1-45 in Zootaxa 1553 on page 15, DOI: 10.5281/zenodo.178168
The Aharonov-Bohm effect in graphene rings
Creators: name: Schelter, Jörg
name: Recher, Patrik
name: Trauzettel, Björn
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This is a review of electronic quantum interference in mesoscopic ring structures based on graphene, with a focus on the interplay between the Aharonov-Bohm effect and the peculiar electronic and transport properties of this material. We first present an overview on recent developments of this topic, both from the experimental as well as the theoretical side. We then review our recent work on signatures of two prominent graphene-specific features in the Aharonov-Bohm conductance oscillations, namely Klein tunneling and specular Andreev reflection. We close with an assessment of experimental and theoretical development in the field and highlight open questions as well as potential directions of the developments in future work.
description: review article for "Special Issue on Graphene", to appear in "Solid State Communications"
Autocrine CXCL8-dependent invasiveness triggers modulation of actin cytoskeletal network and cell dynamics
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: glioblastoma
chemokine
CXCL8
cytoskeleton
cell migration

description: Glioblastoma (GB) is the most representative form of primary malignant brain tumour. Several studies indicated a pleiotropic role of CXCL8 in cancer due to its ability to modulate the tumour microenvironment, growth and aggressiveness of tumour cell. Previous studies indicated that CXCL8 by its receptors (CXCR1 and CXCR2) induced activation of the PI3K/p-Akt pathway, a crucial event in the regulation of cytoskeleton rearrangement and cell mobilization. Human GB primary cell culture and U-87MG cell line were used to study the effects of CXCR1 and CXCR2 blockage, by a dual allosteric antagonist, on cell migration and cytoskeletal dynamics. The data obtained point towards a specific effect of autocrine CXCL8 signalling on GB cell invasiveness by the activation of pathways involved in cell migration and cytoskeletal dynamics, such as PI3K/p-Akt/p-FAK, p-cortactin, RhoA, Cdc42, Acetylated α-tubulin and MMP2. All the data obtained support the concept that autocrine CXCL8 signalling plays a key role in the activation of an aggressive phenotype in primary glioblastoma cells and U-87MG cell line. These results provide new insights about the potential of a pharmacological approach targeting CXCR1/CXCR2 pathways to decrease migration and invasion of GB cells in the brain parenchyma, one of the principal mechanisms of recurrence.
Christa T. – Tonio K. in Disguise? - Autobiography and Intertextuality in Thomas Mann’s Tonio Kröger and Christa Wolf’s Nachdenken über Christa T.
Creators: name: Wong, Grace
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Literature--Germanic
subject: Literature
subject: German

description: My thesis examines the intertextual relationship between Thomas Mann’s Tonio Kröger (TK) and Christa Wolf’s Nachdenken über Christa T. (NT). TK is a product of early 20th century German philosophy and literary trends with a strong influence of Nietzsche’s aesthetics and ideas. NT, a novel with substantial political inferences, is a modernist work about a non-conformist and disillusioned protagonist in the GDR. The scope of my thesis covers the common themes, similarities and intertextuality linking the two works even though they are vastly different in style and content. The feelings of alienation of the protagonists with their internal struggles as artists and the autobiographical writing styles are the shared features of these two texts. These commonalities provide a framework which leads to the examination of the intertextual connection between NT and TK and the different interpretations of NT in the context of theories of intertextuality.
TREATMENT OUTCOMES AND ITS ASSOCIATED FACTOR AMONG DELAYED SPUTUM SMEAR CONVERSION PULMONARY TUBERCULOSIS (PTB) PATIENTS AT PRIMARY CARE CLINICS IN KOTA KINABALU: A RETROSPECTIVE COHORT STUDY
Creators: name: ASBI Atiqah
name: Fah, TONG Seng
name: Nadirah, SULAIMAN
Publisher: name: Zenodo
Year: 2021
Subjects: sputum smear conversion
pulmonary tuberculosis
primary care clinics
treatment outcome
cohort

description: Introduction:
 Delayed sputum smear conversion is a significant problem faced by primary healthcare in Sabah resulting in poor treatment outcomes. This study aims to determine prevalence of delayed sputum smear conversion among pulmonary tuberculosis smear-positive patients at primary care clinics in Kota Kinabalu and their treatment outcomes from extended intensive phase treatment in terms of composite adverse treatment outcome and time to sputum smear conversion. Methodology:
 This is a retrospective cohort study conducted using data from Malaysian TB registry and medical records from five primary care clinics in Kota Kinabalu from January 2014 until December 2018. Results:
 163 patients with delayed sputum smear conversion were selected into cohort groups with 90 patients received extended intensive phase treatment (3EHRZ) and 73 patients received non-extended intensive phase treatment (2EHRZ). Prevalence of delayed sputum smear conversion among new pulmonary tuberculosis smear positive patients was 6.45%. Out of overall 163 patients, 28.8% had composite adverse treatment outcomes (0.6% died, 25.2% treatment failure, 3.7% relapse and 4.9% acquired resistance). The mean time to sputum smear conversion was 145 days (SD 71.8). There were no significant differences in composite adverse treatment outcomes (OR = 1.49, CI: 0.74, 2.98, p = 0.266) and time to sputum smear conversion (mean difference = 17.91, CI: -5.83, 41.65, p = 0.318) between both cohort groups. Discussion/Conclusion:
 Extension of intensive phase treatment in patients with delayed sputum smear conversion not prevented adverse treatment outcomes including TB death, treatment failure, relapse and acquired resistance or reduced time to sputum smear conversion.
 Disclaimer: Abstract text might vary slightly from what is displayed in the e-poster.
description: This poster was submitted to the 14th National Conference for Clinical Research (NCCR) in August 18-20, 2021. https://nccrconference.com.my/
Reentrant phase transitions and multicompensation points in the mixed-spin Ising ferrimagnet on a decorated Bethe lattice
Creators: name: Strecka, Jozef
name: Ekiz, Cesur
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Mixed-spin Ising model on a decorated Bethe lattice is rigorously solved by combining the decoration-iteration transformation with the method of exact recursion relations. Exact results for critical lines, compensation temperatures, total and sublattice magnetizations are obtained from a precise mapping relationship with the corresponding spin-1/2 Ising model on a simple (undecorated) Bethe lattice. The effect of next-nearest-neighbour interaction and single-ion anisotropy on magnetic properties of the ferrimagnetic model is investigated in particular. It is shown that the total magnetization may exhibit multicompensation phenomenon and the critical temperature vs. the single-ion anisotropy dependence basically changes with the coordination number of the underlying Bethe lattice. The possibility of observing reentrant phase transitions is related to a high enough coordination number of the underlying Bethe lattice.
description: 20 pages, 9 figures
The impact of imported Malaria by gold miners in roraima: Characterizing the spatial dynamics of autochthonous and imported malaria in an urban region of boa vista
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: imported cases of malaria
spatial analysis
gold miners

description: © 2020, Fundacao Oswaldo Cruz. All rights reserved. BACKGROUND The number of malaria cases in Roraima nearly tripled from 2016 to 2018. The capital, Boa Vista, considered a low-risk area for malaria transmission, reported an increasing number of autochthonous and imported cases. OBJECTIVES This study describes a spatial analysis on malaria cases in an urban region of Boa Vista, which sought to identify the autochthonous and imported cases and associated them with Anopheles habitats and the potential risk of local transmission. METHODS In a cross-sectional study at the Polyclinic Cosme e Silva, 520 individuals were interviewed and diagnosed with malaria by microscopic examination. Using a global positional system, the locations of malaria cases by type and origin and the breeding sites of anopheline vectors were mapped and the risk of malaria transmission was evaluated by spatial point pattern analysis. FINDINGS Malaria was detected in 57.5% of the individuals and there was a disproportionate number of imported cases (90.6%) linked to Brazilian coming from gold mining sites in Venezuela and Guyana. MAIN CONCLUSIONS The increase in imported malaria cases circulating in the west region of Boa Vista, where there are positive breeding sites for the main vectors, may represent a potential condition for increased autochthonous malaria transmission in this space.
Finite size scaling and triviality of ϕ^4 theory on an antiperiodic torus
Creators: name: Hogervorst, Matthijs
name: Wolff, Ulli
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Worm methods to simulate the Ising model in the Aizenman random current representation including a low noise estimator for the connected four point function are extended to allow for antiperiodic boundary conditions. In this setup several finite size renormalization schemes are formulated and studied with regard to the triviality of ϕ^4 theory in four dimensions. With antiperiodicity eliminating the zero momentum Fourier mode a closer agreement with perturbation theory is found compared to the periodic torus.
description: 20 pages, 3 double-figures, 6 tables
Wavelength dependence of electron localization in the laser-driven dissociation of H$_2^+$
Creators: name: Liu, Kunlong
name: Hong, Weiyi
name: Zhang, Qingbin
name: Lu, Peixiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically investigate the laser wavelength dependence of asymmetric dissociation of H$_2^+$. It is found that the electron localization in molecular dissociation is significantly manipulated by varying the wavelength of the driving field. Through creating a strong nuclear vibration in the laser-molecular interaction, our simulations demonstrate that the few-cycle mid-infrared pulse can effectively localize the electron at one of the dissociating nuclei with weak ionization. Moreover, we show that the observed phase-shift of the dissociation asymmetry is attributed to the different population transfers by the remaining fields after the internuclear distances reach the one-photon coupling point.
description: 11 pages, 7 figures
The impact of BMI categories on metabolic abnormality development in Chinese adults who are metabolically healthy: A 7-year prospective study
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: metabolic diseases
diabetes
hypertension
risk factors

description: © 2020 Liu et al. Purpose: To determine what metabolic abnormalities develop frequently among metabolically healthy adults over time according to different baseline body mass index (BMI) categories. Patients and Methods: A prospective cohort study was performed on 10,805 adults, who were metabolically healthy at the time of the 2008 survey. Participants were divided into four groups: metabolically healthy obese (MHO), metabolically healthy overweight (MHOW), metabolically healthy normal-weight (MHN), and metabolically healthy underweight (MHU). Modified Poisson regression models were used to evaluate the relationship of BMI with the development of metabolic abnormalities. Association rule mining was used to identify the most frequent abnormalities that developed over time. Results: Compared with the MHN group, the adjusted relative risks of the MHO group were 1.57 (95% CI: 1.09–2.27) and 2.08 (95% CI: 1.59–2.73) for developing elevated fasting glucose and elevated blood pressure, respectively, after adjusting for lifestyle behaviours and dietary factors. At the end of follow-up, 33 (19.1%) MHO subjects and 342 (16.6%) MHOW subjects had elevated blood pressure as the predominant metabolic syndrome component, whereas 236 (9.0%) MHU subjects had elevated plasma glucose. The results were similar after stratification by sex. Conclusion: MHO and MHOW subjects developed elevated blood pressure most frequently, and MHU subjects developed elevated blood glucose most commonly, regardless of sex.
Identification and Estimation of Treatment and Interference Effects in Observational Studies on Networks
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: Causal inference
Generalized propensity scores
Network interference
Potential outcomes
Subclassification
Unconfoundedness

description: © 2020, © 2020 American Statistical Association. Abstract–Causal inference on a population of units connected through a network often presents technical challenges, including how to account for interference. In the presence of interference, for instance, potential outcomes of a unit depend on their treatment as well as on the treatments of other units, such as their neighbors in the network. In observational studies, a further complication is that the typical unconfoundedness assumption must be extended—say, to include the treatment of neighbors, and individual and neighborhood covariates—to guarantee identification and valid inference. Here, we propose new estimands that define treatment and interference effects. We then derive analytical expressions for the bias of a naive estimator that wrongly assumes away interference. The bias depends on the level of interference but also on the degree of association between individual and neighborhood treatments. We propose an extended unconfoundedness assumption that accounts for interference, and we develop new covariate-adjustment methods that lead to valid estimates of treatment and interference effects in observational studies on networks. Estimation is based on a generalized propensity score that balances individual and neighborhood covariates across units under different levels of individual treatment and of exposure to neighbors’ treatment. We carry out simulations, calibrated using friendship networks and covariates in a nationally representative longitudinal study of adolescents in grades 7–12 in the United States, to explore finite-sample performance in different realistic settings. Supplementary materials for this article are available online.
Distribution of deep-water scleractinian and stylasterid corals across abiotic environmental gradients on three seamounts in the Anegada Passage
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: Deep-sea coral
Caribbean Sea
Scleractinia
Stylasteridae
Seamount
Aragonite
Anegada Passage
Stony coral
Lace coral
Community structure

description: © Copyright 2020 Auscavitch et al. In the Caribbean Basin the distribution and diversity patterns of deep-sea scleractinian corals and stylasterid hydrocorals are poorly known compared to their shallow-water relatives. In this study, we examined species distribution and community assembly patterns of scleractinian and stylasterid corals on three high-profile seamounts within the Anegada Passage, a deep-water throughway linking the Caribbean Sea and western North Atlantic. Using remotely operated vehicle surveys conducted on the E/V Nautilus by the ROV Hercules in 2014, we characterized coral assemblages and seawater environmental variables between 162 and 2,157 m on Dog Seamount, Conrad Seamount, and Noroît Seamount. In all, 13 morphospecies of scleractinian and stylasterid corals were identified from video with stylasterids being numerically more abundant than both colonial and solitary scleractinians. Cosmopolitan framework-forming species including Madrepora oculata and Solenosmilia variabilis were present but occurred in patchy distributions among the three seamounts. Framework-forming species occurred at or above the depth of the aragonite saturation horizon with stylasterid hydrocorals being the only coral taxon observed below Oarag values of 1. Coral assemblage variation was found to be strongly associated with depth and aragonite saturation state, while other environmental variables exerted less influence. This study enhances our understanding of the factors that regulate scleractinian and stylasterid coral distribution in an underreported marginal sea and establishes a baseline for monitoring future environmental changes due to ocean acidification and deoxygenation in the tropical western Atlantic.
Heterotic string plus five-brane systems with asymptotic AdS3
Creators: name: Gemmer, Karl-Philip
name: Haupt, Alexander S.
name: Lechtenfeld, Olaf
name: Nölle, Christoph
name: Popov, Alexander D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present NS1+NS5-brane solutions of heterotic supergravity on curved geometries. They interpolate between a near horizon AdS3 x X^k x T^{7-k} region and R^{1,1} x c(X^k) x T^{7-k}, where X^k (with k = 3,5,6,7) is a k-dimensional geometric Killing spinor manifold, c(X^k) its Ricci-flat cone and T^{7-k} a (7-k)-torus. The solutions require first order alpha'-corrections to the field equations, and special point-like instantons play an important role, whose singular support is a calibrated submanifold wrapped by the NS5-brane. It is also possible to add a gauge anti-5-brane. We determine the super isometries of the near horizon geometry which are supposed to appear as symmetries of the holographically dual two-dimensional conformal field theory.
description: 37 pages, 3 figures
Data Analytics in Competitive Electricity Markets to Uncover the Impact of Emerging Technologies
Creators: name: Zamanidehkordi, Payam
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Electronics and Electrical
subject: Electricity Market
subject: Data mining
subject: Renewable Energy
subject: Energy Storage

description: The electrical power industry has entered a transition towards sustainable, reliable and clean solutions. It is a continuous revolution trending to a large-scale expansion of renewables in power systems. There have been, however, serious concerns over reliable and secure operation of power systems. Energy storage facilities are increasingly being used to help integrate renewable energy resources into the grid. While understanding the environmental benefits of these emerging technologies is straightforward, the economic impacts of their integration in a competitive market is more complicated. These emerging technologies are likely to have an economically-important effect on the dynamics of electricity prices. This is a concern to different sections of electricity markets including power suppliers, policy makers, and end users. This thesis focuses on applying data mining tools to competitive electricity markets in order to uncover the impact of emerging technologies such as wind power and storage systems on the dynamics of electricity prices. Data-driven approaches are developed to explore the impact on wholesale prices of individual wind farms and independently-operated large-scale energy storage systems. Additionally, this thesis proposes a data-driven methodology to determine a justified support scheme for upcoming wind farms by incorporating their estimated revenue and levelized cost of energy. Moreover, an operation-inspired electricity price prediction scheme is developed to improve the economic profit obtained from operation of storage facilities in competitive markets. Numerical simulations are provided for the electricity markets of Alberta and Ontario. The results prove the efficiency and accuracy of proposed methodologies in estimating the impact on wholesale prices of emerging technologies. In addition, the obtained results from both competitive markets indicate that the presented methodology in this thesis is able to estimate the revenue of an upcoming wind farm with reasonable accuracy, which successively determines the support scheme awarded to the project. Moreover, the performed analyses manifest the effectiveness of the proposed price prediction scheme in improving the economic performance of storage systems.
The BCS Pairing Instability in the Thermodynamic Limit
Creators: name: Marsiglio, F.
name: Beach, K. S. D.
name: Gooding, R. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The superconducting pairing instability---as determined by a divergence of the two-particle susceptibility---is obtained in the mean field (BCS) approximation in the thermodynamic limit. The usual practice is to examine this property for a finite lattice. We illustrate that, while the conclusions remain unchanged, the technical features are very different in the thermodynamic limit and conform more closely with the usual treatment of phase transitions encountered in, for example, the mean-field paramagnetic-ferromagnetic transition. Furthermore, by going to the extreme dilute limit, one can distinguish three dimensions from one and two dimensions, in which a pairing instability occurs even for two particles.
description: 4 pages + references, 4 figures
Associations of psychotic-like experiences, related symptoms, and working memory with functioning
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: clinical high risk
cognition
psychosis
role functioning
social functioning
working memory

description: © The Author(s) 2020. This study examined the association of spatial working memory and attenuated psychotic-like experiences and related symptoms with social and role functioning. Findings from this study suggest that symptom dimensions and working memory impairment were associated with diminished functioning across a variety of domains. Specifically, negative symptoms and working memory impairment were inversely associated with both social and role functioning, whereas positive and disorganized symptoms showed inverse associations with social functioning only. Symptom dimensions did not moderate cognitive and functional variables, although working memory and attenuated clinical symptoms had an additive effect on functioning. Posthoc analyses examining symptom dimensions simultaneously showed negative symptoms to be the variable most strongly predictive of overall functioning. These findings suggest that even in a non-clinical sample, sub-threshold psychosis symptoms and cognition may influence people's social and role functioning.
Patterns of sequence and structural variation within the Neisseria meningitidis transferrin and lactoferrin receptor systems
Creators: name: Adamiak, Paul
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biology--Molecular
subject: Immunology
subject: FOS: Clinical medicine
subject: Neisseria
subject: transferrin
subject: Lactoferrin
subject: Bioinformatics
subject: FOS: Computer and information sciences

description: Invasive meningococcal disease resulting from infection by Neisseria meningitidis is the source of a substantial burden of bacterimia and meningitis in both the developed and developing worlds. Within the human host, N. meningitdis encounters a hostile environment deficient in freely available iron. In order to survive, N. meningitidis has evolved two receptor systems that sequester iron from the host iron transport glycoproteins transferrin and lactoferrin. Both the meningococcal transferrin and lactoferrin receptor systems consist of an outer membrane embedded A protein and a membrane anchored B lipoprotein. Both proteins of these systems are highly immunogenic and functionally important. The opposing selective forces of host immunity and functional necessity have resulted in complex patterns of sequence variation in the genes for these receptors. The research discussed here investigates these patterns with a focus on understanding the functional and structural factors that constrain variability.
Sustainable polyphenolate assisted hydrotropic solubilization of riboflavin
Creators: name: Ulmann, Nadja
name: Hioe, Johnny
name: Touraud, Didier
name: Müller, Eva
name: Horinek, Dominik
name: Kunz, Werner
Publisher: name: Universität Regensburg
Year: 2025
Subjects: subject: Polyphenol, Riboflavin, Stacking, Molecular dynamics, Hydrotrope
subject: 540 Chemie

description: The solubility of riboflavin is currently thoroughly investigated due to its importance for biological systems. Using real-life experiments and theoretical models, we study the hydrotropic performance and solubilizing mechanism of polyphenolic acid salts and derivatives for the solubilization of riboflavin.
Sodium/choline polyphenolates were both identified as potent hydrotropes for riboflavin via UV–Vis-spectroscopy. Using sodium ferulate and 3,4-dimethoxycinnamate, riboflavin’s water solubility can be increased 240 and >2000 times, respectively (molar polyphenolate/riboflavin ratios 6). Thus, polyphenolates were revealed as more efficient hydrotropes for riboflavin than the usually applied hydrotrope nicotinamide.
Solubilization, surface tension, and dynamic light scattering experiments ruled out the presence of larger well-defined aggregates around riboflavin. The (i) importance of the polyphenolates’ π-electron system for riboflavin’s solubilization, (ii) reversible bathochromic shifts of riboflavin’s absorbance by π-electron-rich solubilizers, (iii) mutual solubilization of riboflavin and of some aromatic sodium carboxylates, (iv) nuclear magnetic resonance (NMR) measurements, and (v) molecular dynamics confirmed π-complexation of riboflavin and aromatic carboxylates as reason for this hydrotropy. Additionally, NMR and NPT simulation indicated sodium polyphenolates to influence the ribityl chain. In water, the overall entropy of riboflavin dissolution is favorable, but in the presence of polyphenolate, the entropy of riboflavin’s dissolution is unfavorable and overcompensated by the respective enthalpy.
Finally, both methods hint to a minor influence of the ribityl chain on the dissolution process.
Moreover, real-life experiments and theoretical models state π-electron driven complex formation between the solute riboflavin and the hydrotropic polyphenolates.
A new formulation to calculate general HFB matrix elements through Pfaffian
Creators: name: Mizusaki, Takahiro
name: Oi, Makito
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A new formula is presented for the calculation of matrix elements between multi-quasiparticle Hartree-Fock-Bogoliubov (HFB) states. The formula is expressed in terms of the Pfaffian, and is derived by using the Fermion coherent states with Grassmann numbers. It turns out that the formula corresponds to an extension of generalized Wick's theorem and simplifies the combinatorial complexity resulting from practical applications of generalized Wick's theorem by unifying the transition density and the transition pairing tensor in the HFB theory. The resultant formula is simpler and more compact than the traditional description of matrix elements of general many-body operators. In addition, through the derivation of our new formula, we found that the Pfaffian version of the Lewis Carroll formula corresponds to the relation conjectrured by Balian and Brezin for the HFB theory in 1969.
description: 7 pages, submitted to PLB
Effects of Fluorescent Diamond Particles FDP-NV-800nm on Essential Biochemical Functions of Primary Human Umbilical Vein Cells and Human Hepatic Cell Line, HepG-2 in vitro (Part VI): Acute Biocompatibility Studies
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2020
Subjects: HUVEC
HepG-2 cells
MAPK kinase
apoptosis
cell proliferation
near infra-red

description: Background: Recently, we reported the safety and biocompatibility of fluorescent diamond particles, FDP-NV-Z-800nm (FDP-NV) injected intravenously into rats, where no morbidity and mortality were noted over a period of 3 months. The acute effects of FDP-NV-800nm particles on cultured human endothelial and hepatic cells remain unexplored. Purpose: In this study, we aimed to explore select cellular and biochemical functions in cultured human umbilical endothelial cells (HUVEC) and a human hepatic cancer cell line (HepG-2) exposed to FDP-NV-800 in vitro at exposure levels within the pharmacokinetics (Cmax and the nadir) previously reported in vivo. Methods: Diverse cellular and biochemical functions were monitored, which cumulatively can provide insights into some vital cellular functions. Cell proliferation and migration were assessed by quantitative microscopy. Mitochondrial metabolic functions were tested by the MTT assay, and cytosolic esterase activity was studied by the calcein AM assay. Chaperons (CHOP), BiP and apoptosis (caspase-3 activation) were monitored by using Western blot (WB). MAPK Erk1/2 signaling was assessed by the detection of the phosphorylated form of the protein (P-Erk 1/2) and its translocation into the cell nucleus. Results: At all concentrations tested (0.001-0.1mg/mL), FDP-NV did not affect any of the biomarkers of cell integrity of HepG2 cells. In contrast, the proliferation of HUVEC was affected at the highest concentration tested (0.1mg/mL, Cmax). Exposure of HUVEC to (0.01 mg/mL) FDP-NV had a mild-moderate effect on cell proliferation as evident in the MTT assay and was absent when proliferation was assessed by direct cell counting or by using the calcein AM assays. In both cell types, exposure to the highest concentration (0.1 mg/mL) of FDP-NV did neither affect FBS-stimulated cell signaling (MAPK Erk1/2 phosphorylation) nor did it activate of Caspase 3. Conclusion: Our data suggest that FDP-NV-800nm are largely biocompatible with HepG-2 cells proliferation within the pharmacokinetic data reported previously. In contrast, HUVEC proliferation at the highest exposure dose (0.1 mg/mL) responded adversely with respect to several biomarkers of cell integrity. However, since the Cmax levels are very short-living, the risk for endothelial injury is likely minimal for slow rate cell proliferation such as endothelial cells.