cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ribonuclease III mechanisms of double-stranded RNA cleavage
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Animals
Humans
Models, Molecular
Protein Conformation
RNA, Double-Stranded
Ribonuclease III
Substrate Specificity

description: Double-stranded(ds) RNA has diverse roles in gene expression and regulation, host defense, and genome surveillance in bacterial and eukaryotic cells. A central aspect of dsRNA function is its selective recognition and cleavage by members of the ribonuclease III (RNase III) family of divalent-metal-ion-dependent phosphodiesterases. The processing of dsRNA by RNase III family members is an essential step in the maturation and decay of coding and noncoding RNAs, including miRNAs and siRNAs. RNase III, as first purified from Escherichia coli, has served as a biochemically well-characterized prototype, and other bacterial orthologs provided the first structural information. RNase III family members share a unique fold (RNase III domain) that can dimerize to form a structure that binds dsRNA and cleaves phosphodiesters on each strand, providing the characteristic 2 nt, 3'-overhang product ends. Ongoing studies are uncovering the functions of additional domains, including, inter alia, the dsRNA-binding and PAZ domains that cooperate with the RNase III domain to select target sites, regulate activity, confer processivity, and support the recognition of structurally diverse substrates. RNase III enzymes function in multicomponent assemblies that are regulated by diverse inputs, and at least one RNase III-related polypeptide can function as a noncatalytic, dsRNA-binding protein. This review summarizes the current knowledge of the mechanisms of catalysis and target site selection of RNase III family members, and also addresses less well understood aspects of these enzymes and their interactions with dsRNA. © 2013 The Authors. WIREs RNA published by John Wiley & Sons, Ltd.
A Substellar Companion in a 1.3 yr Nearly-circular Orbit of HD 16760
Creators: name: Sato, Bunei
name: Fischer, Debra A.
name: Ida, Shigeru
name: Harakawa, Hiroki
name: Omiya, Masashi
name: Johnson, John A.
name: Marcy, Geoffrey W.
name: Toyota, Eri
name: Hori, Yasunori
name: Isaacson, Howard
name: Howard, Andrew W.
name: Peek, Kathryn M. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the detection of a substellar companion orbiting the G5 dwarf HD 16760 from the N2K sample. Precise Doppler measurements of the star from Subaru and Keck revealed a Keplerian velocity variation with a period of 466.47+-0.35 d, a semiamplitude of 407.71+-0.84 m/s, and an eccentricity of 0.084+-0.003. Adopting a stellar mass of 0.78+-0.05 M_Sun, we obtain a minimum mass for the companion of 13.13+-0.56 M_JUP, which is close to the planet/brown-dwarf transition, and the semimajor axis of 1.084+-0.023 AU. The nearly circular orbit despite the large mass and intermediate orbital period makes this companion unique among known substellar companions.
description: 14 pages, 2 figures, accepted for publication in ApJ
Nonperturbative Waveguide Quantum Electrodynamics
Creators: name: Ashida, Yuto
name: Yokota, Takeru
name: Imamoglu, Atac
name: Demler, Eugene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Understanding physical properties of quantum emitters strongly interacting with quantized electromagnetic modes is one of the primary goals in the emergent field of waveguide quantum electrodynamics (QED). When the light-matter coupling strength is comparable to or even exceeds energies of elementary excitations, conventional approaches based on perturbative treatment of light-matter interactions, two-level description of matter excitations, and photon-number truncation are no longer sufficient. Here we study in and out of equilibrium properties of waveguide QED in such nonperturbative regimes on the basis of a comprehensive and rigorous theoretical approach using an asymptotic decoupling unitary transformation. We uncover several surprising features ranging from symmetry-protected many-body bound states in the continuum to strong renormalization of the effective mass and potential; the latter may explain recent experiments demonstrating cavity-induced changes in chemical reactivity as well as enhancements of ferromagnetism or superconductivity. To illustrate our general results with concrete examples, we use our formalism to study a model of coupled cavity arrays, which is relevant to experiments in superconducting qubits interacting with microwave resonators or atoms coupled to photonic crystals. We examine the relation between our results and delocalization-localization transition in the spin-boson model; notably, we point out that a reentrant transition can occur in the regimes where the coupling strength becomes the dominant energy scale. We also discuss applications of our results to other problems in different fields, including quantum optics, condensed matter physics, and quantum chemistry.
description: 27 pages, 10 figures
Development of a forecasting model for deposits of credit unions
Creators: name: Dobrzanski, Cristobal Tadeusz
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this thesis is to develop a forecasting model to predict demand deposits and term deposits of credit unions. It begins with a survey of the literature on demand functions for liquid assets. Both single equation models and simultaneous equation systems are summarized. The hypothesis for a likely structural model of credit union financial behaviour is also presented. However, a structural model cannot be estimated because there are no published data on credit unions' interest rates and there is a limited number of observations for the dependent variable. The forecasting technique that is being developed in this thesis is an application of time series analysis. The basic idea behind this approach is to express the time series of demand deposits and of term deposits as a weighted sum of the past values of deposits. The weights in the sum are determined so as to achieve the greatest predictive power by minimizing the mean square error of the forecasts. The data are quarterly time series for demand deposits and for term deposits for each of three credit unions in the Vancouver Region in British Columbia from the second quarter of 1962 to the fourth quarter of 1974. The data are printed in the Appendix. The strength of the mixed autoregressive moving average process (ARIMA) as a forecasting tool for financial intermediaries such as a credit union is evaluated by using a large sample of monthly data of personal demand deposits and personal term deposits of Canadian chartered banks. The best models for each credit union's demand deposits and term deposits are matched against the naive model of a random walk process. They are compared with respect to their minimum mean square error of prediction for the four quarters of 1974. For both the three credit unions and the chartered banks, in all cases the best ARIMA model outperformed all other candidates.
Similar effects on cognitive performance during high- and low-carbohydrate obesity treatment
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: diet
low carbohydrate
cognitive function
weight loss
obesity

description: OBJECTIVE: Low-carbohydrate (L-CHO) diets are often used for weight loss but their effects on cognitive function are not well understood. The present study compared the effects of a L-CHO and high-carbohydrate (H-CHO) weight-loss diet on cognitive function adults. DESIGN: Participants were randomized to either a L-CHO (n=22) or H-CHO (n=25) weight-loss diet. Cognitive function was evaluated by four computerized cognitive tasks (Stroop Task, Continuous Performance Task, Word Recall and Wisconsin Card Sorting Task) presented in random order before and at 1, 4, 12 and 24 weeks after the initiation of the L-CHO or H-CHO diet. PARTICIPANTS: Forty-seven adults (25 males) with a mean±s.d. age of 47.4±8.7 years and body mass index of 35.3±3.4 kgm-2. RESULTS: There were no significant differences in weight loss between groups at any time point. There were significant improvements on color Stroop task accuracy over time in both diet groups (P<0.05), but there were no differences in performance between groups on this or any other cognitive task at any time period. CONCLUSION: These findings suggest that weight loss has neither a positive nor a negative effect on cognitive function and that L-CHO and H-CHO weight-loss diets have similar effects on cognitive performance. © 2013 Macmillan Publishers Limited All rights reserved.
Morphological analysis of SZ and X-ray maps of galaxy clusters with Zernike polynomials
Creators: name: Capalbo, Valentina
name: De Petris, Marco
name: De Luca, Federico
name: Cui, Weiguang
name: Yepes, Gustavo
name: Knebe, Alexander
name: Rasia, Elena
name: Ruppin, Florian
name: Ferragamo, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Several methods are used to evaluate, from observational data, the dynamical state of galaxy clusters. Among them, the morphological analysis of cluster images is well suited for this purpose. We report a new approach to the morphology, which consists in analytically modelling the images with a set of orthogonal functions, the Zernike polynomials (ZPs). We validated the method on mock high-resolution Compton parameter maps of synthetic galaxy clusters from THE THREE HUNDRED project. To classify the maps for their morphology we defined a single parameter, $\mathcal{C}$, by combining the contribution of some ZPs in the modelling. We verify that $\mathcal{C}$ is linearly correlated with a combination of common morphological parameters and also with a proper 3D dynamical-state indicator available for the synthetic clusters we used. We also show the early results of the Zernike modelling applied on Compton parameter maps of local clusters ($z < 0.1$) observed by the $\textit{Planck}$ satellite. At last, we report the preliminary results of this kind of morphological analysis on mock X-ray maps of THE THREE HUNDRED clusters.
description: To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences
Quantitative Mapping of Matrix Content and Distribution across the Ligament-to-Bone Insertion
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Animals
Bone and Bones
Cattle
Collagen
Extracellular Matrix
Ligaments
Spectroscopy, Fourier Transform Infrared

description: The interface between bone and connective tissues such as the Anterior Cruciate Ligament (ACL) constitutes a complex transition traversing multiple tissue regions, including non-calcified and calcified fibrocartilage, which integrates and enables load transfer between otherwise structurally and functionally distinct tissue types. The objective of this study was to investigate region-dependent changes in collagen, proteoglycan and mineral distribution, as well as collagen orientation, across the ligament-to-bone insertion site using Fourier transform infrared spectroscopic imaging (FTIR-I). Insertion site-related differences in matrix content were also evaluated by comparing tibial and femoral entheses. Both region- and site-related changes were observed. Collagen content was higher in the ligament and bone regions, while decreasing across the fibrocartilage interface. Moreover, interfacial collagen fibrils were aligned parallel to the ligament-bone interface near the ligament region, assuming a more random orientation through the bulk of the interface. Proteoglycan content was uniform on average across the insertion, while its distribution was relatively less variable at the tibial compared to the femoral insertion. Mineral was only detected in the calcified interface region, and its content increased exponentially across the mineralized fibrocartilage region toward bone. In addition to new insights into matrix composition and organization across the complex multi-tissue junction, findings from this study provide critical benchmarks for the regeneration of soft tissue-to-bone interfaces and integrative soft tissue repair. © 2013 Spalazzi et al.
Quantum gate using qubit states separated by terahertz
Creators: name: Toyoda, K.
name: Haze, S.
name: Yamazaki, R.
name: Urabe, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A two-qubit quantum gate is realized using electronic excited states in a single ion with an energy separation on the order of a terahertz times the Planck constant as a qubit. Two phase locked lasers are used to excite a stimulated Raman transition between two metastable states $D_{3/2}$ and $D_{5/2}$ separated by 1.82 THz in a single trapped $^{40}$Ca$^+$ ion to construct a qubit, which is used as the target bit for the Cirac-Zoller two-qubit controlled NOT gate. Quantum dynamics conditioned on a motional qubit is clearly observed as a fringe reversal in Ramsey interferometry.
description: 4 pages, 4 figures
Kids Safe and Smokefree (KiSS): A randomized controlled trial of a multilevel intervention to reduce secondhand tobacco smoke exposure in children
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Secondhand smoke
Pediatrics
Randomized controlled trial
Prevention
Tobacco control
Smoking cessation
Health services
Electronic health records

description: Background: Secondhand smoke exposure (SHSe) harms children's health, yet effective interventions to reduce child SHSe in the home and car have proven difficult to operationalize in pediatric practice. A multilevel intervention combining pediatric healthcare providers' advice with behavioral counseling and navigation to pharmacological cessation aids may improve SHSe control in pediatric populations. Methods/design. This trial uses a randomized, two-group design with three measurement periods: pre-intervention, end of treatment and 12-month follow-up. Smoking parents of children < 11-years-old are recruited from pediatric clinics. The clinic-level intervention includes integrating tobacco intervention guideline prompts into electronic health record screens. The prompts guide providers to ask all parents about child SHSe, advise about SHSe harms, and refer smokers to cessation resources. After receiving clinic intervention, eligible parents are randomized to receive: (a) a 3-month telephone-based behavioral counseling intervention designed to promote reduction in child SHSe, parent smoking cessation, and navigation to access nicotine replacement therapy or cessation medication or (b) an attention control nutrition education intervention. Healthcare providers and assessors are blind to group assignment. Cotinine is used to bioverify child SHSe (primary outcome) and parent quit status. Discussion. This study tests an innovative multilevel approach to reducing child SHSe. The approach is sustainable, because clinics can easily integrate the tobacco intervention prompts related to "ask, advise, and refer" guidelines into electronic health records and refer smokers to free evidence-based behavioral counseling interventions, such as state quitlines. Trial registration. NCT01745393 (clinicaltrials.gov). © 2013 Lepore et al.; licensee BioMed Central Ltd.
Exploring histidine conformations in the M2 channel lumen of the influenza a virus at neutral pH via molecular simulations
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: subject: 0307 Theoretical and Computational Chemistry
subject: Emerging Infectious Diseases
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Influenza
subject: Pneumonia & Influenza

description: The pH-regulated M2 proton channel from the influenza A virus has a His-tetrad in its transmembrane (TM) domain that is essential for proton conduction. At neutral pH, the tetrad has been observed in two distinct configurations, the "His-box" and "dimer-of-dimers", with similar backbone structures suggesting competing models for proton conduction. Here, we propose that both conformations can play a role. In support of this hypothesis, we used molecular dynamics simulations based on density functional theory to simulate the M2-TM domain and force-field-based simulations to estimate the relevant free-energy barriers. Both configurations are stable on accessible simulation time scales, and transitions between them occur faster than the millisecond time scale of proton conduction. Moreover, the deprotonation energy is too high for spontaneous conduction, consistent with their occurrence in the low-current regime. Our computations support a multiconfiguration model with different population levels, thereby connecting experimental data obtained under different conditions. © 2013 American Chemical Society.
Hydrocarbons Heterogeneous Pyrolysis: Experiments and Modeling for Scramjet Thermal Management
Creators: name: Bouchez, Marc
name: Daniau, Emeric
name: Visez, Nicolas
name: Herbinet, Olivier
name: Fournet, René
name: Marquaire, Paul-Marie
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The last years saw a renewal of interest for hypersonic research in general and regenerative cooling specifically, with a large increase of the number of dedicated facilities and technical studies. In order to quantify the heat transfer in the cooled structures and the composition of the cracked fuel entering the combustor, an accurate model of the thermal decomposition of the fuel is required. This model should be able to predict the fuel chemical composition and physical properties for a broad range of pressures, temperatures and cooling geometries. For this purpose, an experimental and modeling study of the thermal decomposition of generic molecules (long-chain or polycyclic alkanes) that could be good surrogates of real fuels, has been started at the DCPR laboratory located in Nancy (France). This successful effort leads to several versions of a complete kinetic model. These models do not assume any effect from the material that constitutes the cooling channel. A specific experimental study was performed with two different types of steel (regular: E37, stainless: 316L). Some results are given in the present paper.
The mm-to-cm SED of spiral galaxies. Synergies between NIKA2 and SRT instruments
Creators: name: Bianchi, S.
name: Murgia, M.
name: Melis, A.
name: Casasola, V.
name: Galametz, M.
name: Galliano, F.
name: Govoni, F.
name: Jones, A.
name: Madden, S.
name: Paladino, R.
name: Xilouris, E.
name: Ysard, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The mm-to-cm range of the Spectral Energy Distribution of spiral galaxies remains largely unexplored. Its coverage is required to disentangle the contribution of dust emission, free-free and synchrotron radiation and can provide constraints on dust models, star-formation rates and ISM properties. We present the case for a synergy between NIKA2 observations of nearby spirals and those from planned and current instrumentation at the Sardinia Radio Telescope, and report on a pilot K-band program to search for Anomalous Microwave Emission, an elusive emission component which is presumably related to dust.
description: To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences
Патриотизм как мотивация к деятельности сотрудников органов внутренних дел
Creators: name: Владимир Федорович Родин
name: Валентина Александровна Лысова
Publisher: name: Психология и педагогика служебной деятельности
Year: 2024
Subjects: любовь к Родине
патриотизм
мотивация
органы внутренних дел
эффективность
преданность
безопасность граждан

description: Рассматривается патриотизм как важное личностное качество гражданина Российской Федерации и как мотивация сотрудников органов внутренних дел к своей деятельности. Анализируется, каким образом патриотическое чувство влияет на эффективность служебной деятельности сотрудников органов внутренних дел. В работе затрагиваются различные аспекты патриотизма, такие как гордость за страну, верность отечеству и понимание важности роли каждого полицейского в обеспечении безопасности граждан. Анализируется влияние патриотизма на все сферы деятельности сотрудников Министерства внутренних дел Российской Федерации.
Digital imprinting of RNA recognition and processing on a self-assembled nucleic acid matrix
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Biosensing Techniques
DNA
Microscopy, Atomic Force
Molecular Imprinting
RNA
Surface Properties

description: The accelerating progress of research in nanomedicine and nanobiotechnology has included initiatives to develop highly-sensitive, high-throughput methods to detect biomarkers at the single-cell level. Current sensing approaches, however, typically involve integrative instrumentation that necessarily must balance sensitivity with rapidity in optimizing biomarker detection quality. We show here that laterally-confined, self-assembled monolayers of a short, double-stranded(ds)[RNA-DNA] chimera enable permanent digital detection of dsRNA-specific inputs. The action of ribonuclease III and the binding of an inactive, dsRNA-binding mutant can be permanently recorded by the input-responsive action of a restriction endonuclease that cleaves an ancillary reporter site within the dsDNA segment. The resulting irreversible height change of the arrayed ds[RNA-DNA], as measured by atomic force microscopy, provides a distinct digital output for each dsRNA-specific input. These findings provide the basis for developing imprinting-based bio-nanosensors, and reveal the versatility of AFM as a tool for characterizing the behaviour of highly-crowded biomolecules at the nanoscale.
The jump of the clique chromatic number of random graphs
Creators: name: Lichev, Lyuben
name: Mitsche, Dieter
name: Warnke, Lutz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C15, 05C80, 60C05

description: The clique chromatic number of a graph is the smallest number of colors in a vertex coloring so that no maximal clique is monochromatic. In 2016 McDiarmid, Mitsche and Pralat noted that around p \approx n^{-1/2} the clique chromatic number of the random graph G_{n,p} changes by n^{Ω(1)} when we increase the edge-probability p by n^{o(1)}, but left the details of this surprising phenomenon as an open problem. We settle this problem, i.e., resolve the nature of this polynomial `jump' of the clique chromatic number of the random graph G_{n,p} around edge-probability p \approx n^{-1/2}. Our proof uses a mix of approximation and concentration arguments, which enables us to (i) go beyond Janson's inequality used in previous work and (ii) determine the clique chromatic number of G_{n,p} up to logarithmic factors for any edge-probability p.
description: 14 pages
Merozoite surface protein-3 alpha as a genetic marker for epidemiologic studies in Plasmodium vivax: A cautionary note
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Plasmodium vivax
Merozoite surface protein-3 alpha
Molecular markers
Parasite diversity
Population genetics
PCR-RFLP
Recombination

description: Background: Plasmodium vivax is the most widespread of the human malaria parasites in terms of geography, and is thought to present unique challenges to local efforts aimed at control and elimination. Parasite molecular markers can provide much needed data on P. vivax populations, but few such markers have been critically evaluated. One marker that has seen extensive use is the gene encoding merozoite surface protein 3-alpha (MSP-3α), a blood-stage antigen known to be highly variable among P. vivax isolates. Here, a sample of complete msp-3α gene sequences is analysed in order to assess its utility as a molecular marker for epidemiologic investigations. Methods. Amplification, cloning and sequencing of additional P. vivax isolates from different geographic locations, including a set of Venezuelan field isolates (n = 10), yielded a sample of 48 complete msp-3α coding sequences. Characterization of standard population genetic measures of diversity, phylogenetic analysis, and tests for recombination were performed. This allowed comparisons to patterns inferred from the in silico simulation of a polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) protocol used widely. Results: The larger sample of MSP-3α diversity revealed incongruence between the observed levels of nucleotide polymorphism, which were high in all populations, and the pattern of PCR-RFLP haplotype diversity. Indeed, PCR-RFLP haplotypes were not informative of a population's genetic diversity and identical haplotypes could be produced from analogous bands in the commonly used protocol. Evidence of frequent and variable insertion-deletion mutations and recurrent recombination between MSP-3α haplotypes complicated the inference of genetic diversity patterns and reduced the phylogenetic signal. Conclusions: The genetic diversity of P. vivax msp-3α involves intragenic recombination events. Whereas the high genetic diversity of msp-3α makes it a promising marker for some epidemiological applications, the ability of msp-3α PCR-RFLP analysis to accurately track parasites is limited. Local studies of the circulating alleles are needed before implementing PCR-RFLP approaches. Furthermore, evidence from the global sample analysed here suggests such msp-3α PCR-RFLP methods are not suitable for broad geographic studies or tracking parasite populations for an extended period of time. © 2013 Rice et al.; licensee BioMed Central Ltd.
Group and phase velocities in the free-surface visco-potential flow: new kind of boundary layer induced instability
Creators: name: Dutykh, Denys
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Water wave propagation can be attenuated by various physical mechanisms. One of the main sources of wave energy dissipation lies in boundary layers. The present work is entirely devoted to thorough analysis of the dispersion relation of the novel visco-potential formulation. Namely, in this study we relax all assumptions of the weak dependence of the wave frequency on time. As a result, we have to deal with complex integro-differential equations that describe transient behaviour of the phase and group velocities. Using numerical computations, we show several snapshots of these important quantities at different times as functions of the wave number. Good qualitative agreement with previous study [Dutykh2009] is obtained. Thus, we validate in some sense approximations made anteriorly. There is an unexpected conclusion of this study. According to our computations, the bottom boundary layer creates disintegrating modes in the group velocity. In the same time, the imaginary part of the phase velocity remains negative for all times. This result can be interpreted as a new kind of instability which is induced by the bottom boundary layer effect.
description: 12 pages, 7 figures. Reviewer's comments were taken into account. Other author's papers can be downloaded at http://www.lama.univ-savoie.fr/~dutykh/
Valorization of biodigestor plant waste in electrodes for supercapacitors and microbial fuel cells
Creators: name: Mutuma, Bridget K.
name: Sylla, Ndeye F.
name: Bubu, Amanda
name: Ndiaye, Ndeye M.
name: Santoro, Carlo
name: Brilloni, Alessandro
name: Poli, Federico
name: Manyala, Ncholu
name: Soavi, Francesca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: This study aims at demonstrating that wastes from anaerobic biodigester plants can be effectively valorized as functional materials to be implemented in technologies that enable efficient energy management and water treatment, therefore simultaneously addressing the Water-Energy-Waste Nexus challenges. Lignin, the main solid residue of the biodigester plant, has been valorized into activated biochar with a mild activation agent, like KHCO3, to produce electrode of supercapacitors and microbial fuel cells. In addition, the same sludge that is the liquid effluent of the biodigester plant has been exploited as inoculum and electrolyte for the MFC. The lignin derived carbons obtained at lignin/KHCO3 mass ratios of 1:0.5 (LAC-0.5) and 1:2 (LAC-2) comprised of mesopores and micropores displaying BETs of 1558 m2/g and 1879 m2/g, respectively. LAC-2 carbon exhibited a superior specific capacitance of 114 F/g in 2.5 M KNO3 with respect to LAC-0.5. A supercapacitor with LAC-2 electrodes was built displaying specific energy specific power up to 10 Wh/kg and 6.9 kW/kg, respectively. Durability tests showed that the device was able to maintain a capacitance retention of 84.5% after 15,000 charge-discharge cycles. The lignin-derived carbons were also studied as electrocatalysts for ORR in a neutral medium. The LAC-2 showed higher ORR electrocatalytic activity than LAC-0.5. The interconnected porous network and the high surface area made the lignin-derived porous carbons suitable electrode materials for dual applications. The feasibility of the use of LAC 2 carbon incorporated in an air breathing cathode for MFC applications is also reported.
A new cadinane sesquiterpenoid glucoside with cytotoxicity from Abelmoschus sagittifolius
Creators: name: Chen, De-Li
name: Li, Guang
name: Liu, Yang-Yang
name: Ma, Guo-Xu
name: Zheng, Wei
name: Sun, Xiao-Bo
name: Xu, Xu-Dong
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: FOS: Biological sciences

description: A new cadinane sesquiterpenoid glucoside, 2β,7,3-trihydroxycalamenene 3-O-β-d-glucoside (1) together with six known compounds, N-(p-trans-coumaroyl)-N-methyl tyramine (2), Cleomiscosin A (3), 9,12,13-trihydroxy-10,15-heptadecadienoic acid (4), Cytochalasin B (5), Marmesinin (6) and N-(p-trans-coumaroyl) tyramine (7) were obtained from the stem bark of Abelmoschus sagittifolius. The new structure of compound 1 was elucidated by analysing its 1H and 13C-NMR, 1H-1H COSY, HSQC, HMBC, NOESY and HR-ESI-MS spectra. Compounds 1–7 showed moderate cytotoxicity against Hela and HepG-2 human cancer cell lines.
A note on Clifford bundles and certain Finsler type spaces
Creators: name: Torromé, Ricardo Gallego
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53B40, 15A66

description: We study a relation between certain extensions of the Clifford bundle and Finsler type structures that naturally generalize the standard Clifford relation between (pseudo)-Riemannian metric structures and Dirac matrices. We show for flat metrics that there is a triangle map between Finsler structures constructed from an (pseudo)-Riemannian metric and $1$-forms on $M$, the extension of the Clifford bundle and relevant Dirac type operators.
description: 10 pages; Accepted for publication in International Journal of Geometric Methods in Modern Physics
Terahertz Kerr effect
Creators: name: Hoffmann, Matthias C.
name: Brandt, Nathaniel C.
name: Hwang, Harold Y.
name: Yeh, Ka-Lo
name: Nelson, Keith A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have observed optical birefringence in liquids induced by single-cycle THz pulses with field strengths exceeding 100 kV/cm. The induced change in polarization is proportional to the square of the THz electric field. The time-dependent THz Kerr signal is composed of a fast electronic response that follows the individual cycles of the electric field and a slow exponential response associated with molecular orientation.
description: Submitted to Appl. Phys. Lett. July 29 2009
Simulating flood event sets using extremal principal components
Creators: name: Rohrbeck, Christian
name: Cooley, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Hazard event sets, a collection of synthetic extreme events over a given period, are important for catastrophe modelling. This paper addresses the issue of generating event sets of extreme river flow for northern England and southern Scotland, a region which has been particularly affected by severe flooding over the past 20 years. We start by analysing historical extreme river flow across 45 gauges, located within the study region, using methods from extreme value analysis, including the concept of extremal principal components. Our analysis reveals interesting connections between the extremal dependence structure and the region's topography/climate. We then introduce a framework which is based on modelling the distribution of the extremal principal components in order to generate synthetic events of extreme river flow. The generative framework is dimension-reducing in that it distinctly handles the principal components based on their contribution to describing the nature of extreme river flow across the study region. We also detail a data-driven approach to select the optimal dimension. Synthetic flood events are subsequently generated efficiently by sampling from the fitted distribution. Our approach for generating hazard event sets can be easily implemented by practitioners and our results indicate good agreement between the observed and simulated extreme river flow dynamics. For the considered application, we also find that our approach outperforms existing statistical approaches for generating hazard event sets.
description: This revised version provides new material and results which help to use the presented methodology in applications
Wave packet treatment of neutrino flavor oscillations in various spacetimes
Creators: name: Sadeghi, P.
name: Hammad, F.
name: Landry, A.
name: Martel, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effect of gravity on neutrino flavor oscillations when each mass eigenstate is described by a wave packet instead of a plane wave. Two different approaches for implementing the wave packet formalism in the study of neutrino flavor oscillations in curved spacetime are examined. We work with a general static and spherically symmetric spacetime before applying our results to a few spacetime metrics of interest. We first focus on general relativity by examining the effect of the exterior and interior Schwarzschild solutions, as well as the de Sitter-Schwarzschild metric, and then we examine selected metrics from modified gravity models.
description: 31 pages. 1 figure
In-plane selective excitation of arbitrary vibration modes using thickness-shear (d15) piezoelectric transducers
Creators: name: Qiu, Hao
name: Li, Faxin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Experimental modal analysis (EMA) is of great importance for the dynamic characterization of structures. Existing methods typically employ out-of-plane forces for excitation and measure the acceleration or strain for modal analysis. However, these methods encountered difficulties in some cases. In this work, we proposed an in-plane excitation method based on thickness-shear (d15) piezoelectric transducers. Through the combination of distributed d15 PZT strips, arbitrary vibration modes can be selectively excited in a wide frequency range. Both simulations and experiments were conducted and the results validated the proposed method. Specifically, bending, torsional, and longitudinal vibration modes of a rectangular bar were selectively excited. Torsional modes of a shaft were excited without the aid of brackets and bending modes of a circular plate were excited with actuators placed at nodal lines. Furthermore, the electromechanical impedance of the PZT-structure system was measured from which the natural frequency and quality factor were directly extracted. Due to its simplicity and flexibility, the proposed vibration excitation method is expected to be widely used in near future.
description: 14 pages, 9 figures
Max Weber oggi. Dal laboratorio della Gesamtausgabe alla sua ricezione mondiale. Intervista a Edith Hanke
Creators: name: Alagna, Mirko
name: Vassalle, Annamaria
Publisher: name: Università degli Studi di Firenze
Year: 2014

description: AAVV
description: SocietàMutamentoPolitica, Vol 5, N° 9 (2014): 1864-2014 – Max Weber: a Contemporary Sociologist
FairCanary: Rapid Continuous Explainable Fairness
Creators: name: Ghosh, Avijit
name: Shanbhag, Aalok
name: Wilson, Christo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Systems that offer continuous model monitoring have emerged in response to (1) well-documented failures of deployed Machine Learning (ML) and Artificial Intelligence (AI) models and (2) new regulatory requirements impacting these models. Existing monitoring systems continuously track the performance of deployed ML models and compute feature importance (a.k.a. explanations) for each prediction to help developers identify the root causes of emergent model performance problems. We present Quantile Demographic Drift (QDD), a novel model bias quantification metric that uses quantile binning to measure differences in the overall prediction distributions over subgroups. QDD is ideal for continuous monitoring scenarios, does not suffer from the statistical limitations of conventional threshold-based bias metrics, and does not require outcome labels (which may not be available at runtime). We incorporate QDD into a continuous model monitoring system, called FairCanary, that reuses existing explanations computed for each individual prediction to quickly compute explanations for the QDD bias metrics. This optimization makes FairCanary an order of magnitude faster than previous work that has tried to generate feature-level bias explanations.
description: Accepted as a full paper at the 2022 AAAI/ACM Conference on AI, Ethics, and Society
Suppression of asymmetric differential resistance in non-Fermi liquid system YbCu_(5-x)Al_(x) (x = 1.3 - 1.75) in high magnetic fields
Creators: name: Pristas, G.
name: Reiffers, M.
name: Bauer, E.
name: Jansen, A. G. M.
name: Maude, D. K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The non-Fermi liquid system (NFL) YbCu_(5-x)Al_(x) (x = 1.3 - 1.75) has been investigated in hetero- as well as homo-contact arrangement in magnetic fields up to 22.5 T. The observed dV/dI(V) characteristics reveal asymmetry in hetero-contact arrangement and do not agree with the model of thermal contact heating, at least close to zero-bias voltage. In the case of a hetero-contact arrangement we have observed a maximum at only one voltage polarity at about 1.3 mV (for x = 1.5), which asymmetry is suppressed in an applied magnetic field. This behavior is connected with NFL properties of studied compounds.
description: 6 pages
Mapping the intracluster medium temperature in the era of NIKA2 and MUSTANG-2
Creators: name: Ruppin, F.
name: Adam, R.
name: Ade, P.
name: Ajeddig, H.
name: André, P.
name: Artis, E.
name: Aussel, H.
name: Beelen, A.
name: Benoît, A.
name: Berta, S.
name: Bing, L.
name: Bourrion, O.
name: Brodwin, M.
name: Calvo, M.
name: Catalano, A.
name: Decker, B.
name: De Petris, M.
name: Désert, F. -X.
name: Doyle, S.
name: Driessen, E. F. C.
name: Eisenhardt, P. R. M.
name: Gomez, A.
name: Gonzalez, A. H.
name: Goupy, J.
name: Kéruzoré, F.
name: Kramer, C.
name: Ladjelate, B.
name: Lagache, G.
name: Leclercq, S.
name: Lestrade, J. -F.
name: Macías-Pérez, J. -F.
name: Maury, A.
name: Mauskopf, P.
name: Mayet, F.
name: McDonald, M.
name: Monfardini, A.
name: Moravec, E.
name: Muñoz-Echeverría, M.
name: Perotto, L.
name: Pisano, G.
name: Ponthieu, N.
name: Revéret, V.
name: Rigby, A. J.
name: Ritacco, A.
name: Romero, C.
name: Roussel, H.
name: Schuster, K.
name: Shu, S.
name: Sievers, A.
name: Stanford, S. A.
name: Stern, D.
name: Tucker, C.
name: Zylka, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present preliminary results from an on-going program that aims at mapping the intracluster medium (ICM) temperature of high redshift galaxy clusters from the MaDCoWS sample using a joint analysis of shallow X-ray data obtained by $Chandra$ and high angular resolution Sunyaev-Zel'dovich (SZ) observations realized with the NIKA2 and MUSTANG-2 cameras. We also present preliminary results from an on-going Open Time program within the NIKA2 collaboration that aims at mapping the ICM temperature of a galaxy cluster at $z=0.45$ from the resolved detection of the relativistic corrections to the SZ spectrum. These studies demonstrate how high angular resolution SZ observations will play a major role in the coming decade to push the investigation of ICM dynamics and non-gravitational processes to high redshift before the next generation X-ray observatories come into play.
description: To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences
THE INTRODUCTION OF SECUBE INTO THE EDUCATIONAL SECTOR: PROSPECTS AND CHALLENGES
Creators: name: Sharibayev, Nosir
name: Djurayev, Sherzod
name: Tursunov, Axrorbek
name: Xolmurotov, Botirjon
Publisher: name: Zenodo
Year: 2023

description: This article examines the introduction of SeCube, an information security management system, into the educational sector, exploring its prospects and challenges. In the context of increasing digitalization in education, SeCube offers robust solutions for managing and safeguarding digital information. The analysis covers the potential benefits of SeCube in enhancing cybersecurity in educational institutions, while also addressing the potential obstacles and limitations in its implementation. This examination aims to provide a comprehensive overview of the role SeCube can play in advancing information security practices within the educational sector.
clusterProfiler 4.0 and the new features
Creators: name: Erqiang Hu
Publisher: name: F1000 Research Limited
Year: 2021

description: Functional enrichment analysis is an indispensable step for high-throughput omics data analysis. Although there are many related tools, there are also many problems, such as outdated knowledge database, limited species support, and lack of visualization methods for interpreting results. To use the latest annotation databases for as many organisms as possible, we present here an updated version of our popular Bioconductor package, clusterProfifiler 4.0.
title: Clasificación de las fracturas pélvicas
Creators: name: Martínez Higueros, Claudia Lorena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: CT
subject: Conventional radiography
subject: Pelvis
subject: Musculoskeletal bone

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Actualizar e integrar los criterios radiológicos de clasificación de las fracturas de...
Search for H$α$ Emitters at $z\sim7.8$: A Constraint on the H$α$-based Star Formation Rate Density
Creators: name: Asada, Y.
name: Ohta, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We search for H$α$ emitters at $z\sim7.8$ in four gravitationally lensed fields observed in the Hubble Frontier Fields program. We use the Lyman break method to select galaxies at the target redshift, and make the photometry in {\it Spitzer}/IRAC 5.8 $μ$m band to detect the H$α$ emission from the candidate galaxies. We find no significant detection of counterparts in the IRAC 5.8 $μ$m band, and this gives a constraint on the H$α$ luminosity function (LF) at $z\sim7.8$. We compare the constraint with previous studies on rest-frame UV and FIR observation using the correlation between the H$α$ luminosity and the star formation rate. Additionally, we convert the constraint on the H$α$ LF into an upper limit for the star formation rate density (SFRD) at this epoch assuming the shape of the LF. We examine two types of parameterization of the LF, and obtain an upper limit for the SFRD of $\log_{10}(ρ_{\rm SFR}\ [M_\odot\ \mathrm{yr^{-1}\ Mpc^{-3}}])\lesssim-1.1$ at $z\sim7.8$. With this constraint on the SFRD, we give an independent probe into the total star formation activity including the dust-obscured and unobscured star formation at the Epoch of Reionization.
description: 12 pages, 6 figures, 1 table, Accepted for publication in ApJ
On the aberration-retardation effects in pulsars
Creators: name: Krzeszowski, K.
name: Mitra, D.
name: Gupta, Y.
name: Kijak, J.
name: Gil, J.
name: Acharyya, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The magnetospheric locations of pulsar radio emission region are not well known. The actual form of the so--called radius--to--frequency mapping should be reflected in the aberration--retardation (A/R) effects that shift and/or delay the photons depending on the emission height in the magnetosphere. Recent studies suggest that in a handful of pulsars the A/R effect can be discerned w.r.t the peak of the central core emission region. To verify these effects in an ensemble of pulsars we launched a project analysing multi--frequency total intensity pulsar profiles obtained from the new observations from the Giant Meterwave Radio Telescope (GMRT), Arecibo Observatory (AO) and archival European Pulsar Network (EPN) data. For all these profiles we measure the shift of the outer cone components with respect to the core component which is necessary for establishing the A/R effect. Within our sample of 23 pulsars 7 show the A/R effects, 12 of them (doubtful cases) show a tendency towards this effect, while the remaining 4 are obvious counter examples. The counter--examples and doubtful cases may arise from uncertainties in determination of the location of the meridional plane and/or the core emission component. It hence appears that the A/R effects are likely to operate in most pulsars from our sample. We conclude that in cases where those effects are present the core emission has to originate below the conal emission region.
description: for appendix postscript file, see http://astro.ia.uz.zgora.pl/~chriss/Krzeszowski_2009_appendix.ps