cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Acetylation of carvacrol raises its efficacy against engorged cattle ticks Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)
Creators: name: Gonçalves, Raquel Romano Palmeira
name: Peconick, Ana Paula
name: Konig, Isaac Filipe Moreira
name: Lunguinho, Allan Silva
name: Ribeiro, Jenifer Caroline Da Silva
name: Gomes, Samuel Lucas
name: Silva, Larissa
name: Thomasi, Sérgio Scherrer
name: Remedio, Rafael Neodini
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The effects of acetylcarvacrol on the reproductive performance of engorged female R. microplus were evaluated. Carvacrol was acetylated by a reaction with acetic anhydride, confirmed by the identification of its melting point and by infrared spectroscopy. Based on the median lethal concentration, females were exposed to sublethal concentrations (3.7, 4.6 and 5.0 μL/mL) of acetylcarvacrol by means of the adult immersion test. The following parameters were evaluated: female weight before oviposition, pre-oviposition period, egg mass weight, egg production index, incubation period, hatching rate, fecundity rate, percentage of reduction in oviposition, percentage of reduction in hatching and product efficacy. The greatest efficacy was observed in the group treated with the highest concentration (91.69%) due to the greater weight reduction in egg mass (34.91 ± 0.02 mg) and the lower hatching rate (7.23 ± 15.50%). Therefore, this compound is a promising alternative for the control of R. microplus infestations.
Instanton correlators and phase transitions in two- and three-dimensional logarithmic plasmas
Creators: name: Borkje, K.
name: Kragset, S.
name: Sudbo, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The existence of a discontinuity in the inverse dielectric constant of the two-dimensional Coulomb gas is demonstrated on purely numerical grounds. This is done by expanding the free energy in an applied twist and performing a finite-size scaling analysis of the coefficients of higher-order terms. The phase transition, driven by unbinding of dipoles, corresponds to the Kosterlitz-Thouless transition in the 2D XY model. The method developed is also used for investigating the possibility of a Kosterlitz-Thouless phase transition in a three-dimensional system of point charges interacting with a logarithmic pair-potential, a system related to effective theories of low-dimensional strongly correlated systems. We also contrast the finite-size scaling of the fluctuations of the dipole moments of the two-dimensional Coulomb gas and the three-dimensional logarithmic system to those of the three-dimensional Coulomb gas.
description: 15 pages, 16 figures
Risk-Increasing and Risk-Reducing Practices in Human Resource Management: Focus Group Discussions with Livestock Managers
Creators: name: Bitsch, Vera
name: Olynk, Nicole J.
name: Bitsch, Vera
name: Olynk, Nicole J.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Risk and Uncertainty
subject: focus group research method
subject: labor management
subject: personnel management
subject: qualitative research
subject: risk management
subject: risk perception

description: Historically, managers in livestock production have focused on production management; however, as operations have grown they have spent more time managing employees. Increased time spent overseeing employees brings additional risks and challenges, and, hence, a greater need for human resource management (HRM) skills. This study investigated HRM practices in pork production and analyzed their risk attributes through six focus group discussions with managers. Results were compared to existing data from four dairy focus groups and to other research. The results have been used to develop and adapt educational workshops for managers in pork production.
Merodon cinereus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon cinereus

description: Merodon cinereus (FABRICIUS, 1794)
OÖ, Kleinreifling, Bodenwies, Gipfel, 1540m, 9.7.17.
Neu für Oberösterreich.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 772, DOI: 10.5281/zenodo.4004374
Factors Influencing and Steps Leading to the Adoption of Best Management Practices by Louisiana Dairy Farmers
Creators: name: Paudel, Krishna P.
name: Gauthier, Wayne M.
name: Westra, John V.
name: Hall, Larry M.
name: Paudel, Krishna P.
name: Gauthier, Wayne M.
name: Westra, John V.
name: Hall, Larry M.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: best management practices
subject: bootstrap
subject: cost-share
subject: manure
subject: steps in BMP adoption

description: A logistic regression procedure was used to assess the impact of socioeconomic attributes on the best management practices (BMPs) adoption decision by Louisiana dairy farmers relative to cost-share and fixed incentive payments. Analysis of the steps in the BMP adoption decision process indicated visits between producers and the U.S. Department of Agriculture–Natural Resource Conservation Service significantly increase likelihood of BMP adoption. Producer willingness-to-pay results indicate that marginal increases in dairy BMP adoption and associated improvement in environmental quality require increased technical and financial assistance.
Probing forward/small-x dynamics from hadrons and muon pairs
Creators: name: Lajoie, John
Publisher: name: Zenodo
Year: 2020
Subjects: wwnd20
phenix
rhic
small-x
forward-rapidity
hadron
dimuon
fvtx
muon arms
p+al
p+au
heavy flavor
backward-rapidity
d-meson
nuclear
modification
raa
drell-yan

description: Talk presented at the Winter Workshop on Nuclear Dynamics, 2020 conference. Small-x phenomena are important for a fundamental understanding of partonic processes in nuclei, as well as for the initial conditions for heavy ion collisions at RHIC and the LHC.
Baryogenesis and Dark Matter from Freeze-In
Creators: name: Shuve, Brian
name: Tucker-Smith, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a simple model in which the baryon asymmetry and dark matter are created via the decays and inverse decays of QCD-triplet scalars, at least one of which must be in the TeV mass range. Singlet fermions produced in these decays constitute the dark matter. The singlets never reach equilibrium, and their coherent production, propagation, and annihilation generates a baryon asymmetry. We find that that the out-of-equilibrium condition and the dark matter density constraint typically require the lightest scalar to be long-lived, giving good prospects for detection or exclusion in current and upcoming colliders. In generalizing the leptogenesis mechanism of Akhmedov, Rubakov and Smirnov, our model expands the phenomenological possibilities for low-scale baryogenesis.
description: 27 pages + appendices, 16 figures
Heat Bath Efficiency with Metropolis-Type Updating
Creators: name: Bazavov, Alexei
name: Berg, Bernd A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We illustrate for 4D SU(2) and U(1) lattice gauge theory that sampling with a biased Metropolis scheme is essentially equivalent to using the heat bath algorithm. Only, the biased Metropolis method can also be applied when an efficient heat bath algorithm does not exist.
description: 5 pages, 4 figures. Revisions after referee reports
Adversarial Machine Learning: Attacking and Safeguarding Image Datasets
Creators: name: Chowdhury, Koushik
Publisher: name: arXiv
Year: 2025
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper examines the vulnerabilities of convolutional neural networks (CNNs) to adversarial attacks and explores a method for their safeguarding. In this study, CNNs were implemented on four of the most common image datasets, namely CIFAR-10, ImageNet, MNIST, and Fashion-MNIST, and achieved high baseline accuracy. To assess the strength of these models, the Fast Gradient Sign Method was used, which is a type of exploit on the model that is used to bring down the models accuracies by adding a very minimal perturbation to the input image. To counter the FGSM attack, a safeguarding approach went through, which includes retraining the models on clear and pollutant or adversarial images to increase their resistance ability. The next step involves applying FGSM again, but this time to the adversarially trained models, to see how much the accuracy of the models has gone down and evaluate the effectiveness of the defense. It appears that while most level of robustness is achieved against the models after adversarial training, there are still a few losses in the performance of these models against adversarial perturbations. This work emphasizes the need to create better defenses for models deployed in real-world scenarios against adversaries.
description: 6 pages, published in Proceedings of the Fourth International Conference on Ubiquitous Computing and Intelligent Information Systems (ICUIS-2024)
Alternative Crop Insurance Indexes
Creators: name: Deng, Xiaohui
name: Barnett, Barry J.
name: Hoogenboom, Gerrit
name: Yu, Yingzhuo
name: Garcia Y Garcia, Axel
name: Deng, Xiaohui
name: Barnett, Barry J.
name: Hoogenboom, Gerrit
name: Yu, Yingzhuo
name: Garcia Y Garcia, Axel
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: area yield insurance
subject: cooling degree days
subject: DSSAT
subject: group risk plan

description: Three index-based crop insurance contracts are evaluated for representative south Georgia corn farms. The insurance contracts considered are based on indexes of historical county yields, yields predicted from a cooling degree-day production model, and yields predicted from a crop-simulation model. For some of the representative farms, the predicted yield index contracts provide yield risk protection comparable to the contract based on historical county yields, especially at lower levels of risk aversion. The impact of constraints on index insurance choice variables is considered and important interactions among constrained, conditionally optimized, choice variables are analyzed.
Modeling Texas Dryland Cotton Yields, With Application to Crop Insurance Actuarial Rating
Creators: name: Chen, Shu-Ling
name: Miranda, Mario J.
name: Chen, Shu-Ling
name: Miranda, Mario J.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Farm Management
subject: actuarial rating
subject: adverse selection
subject: cotton
subject: crop insurance
subject: group risk plan
subject: regime-switching
subject: yield distribution

description: Texas dryland upland cotton yields have historically exhibited greater variation and more distributional irregularities than the yields of other crops, raising concerns that conventional parametric distribution models may generate biased or otherwise inaccurate crop insurance premium rate estimates. Here, we formulate and estimate regime-switching models for Texas dryland cotton yields in which the distribution of yield is conditioned on local drought conditions. Our results indicate that drought-conditioned regime-switching models provide a better fit to Texas county-level dryland cotton yields than conventional parametric distribution models. They do not, however, generate significantly different Group Risk Plan crop insurance premium rate estimates.
The effect of fines on oriented strandboard bending properties
Creators: name: Cafferata, Alicia
Publisher: name: University of British Columbia
Year: 2009

description: The presence of fines in oriented strandboard (OSB) can influence the profitability of a mill. Because the disposal of fines can be costly, mill managers may be compelled to incorporate them into the final product. However, the presence of fines in the product diminishes certain technical attributes such as the bending properties. The objective of this study was to assess the effect of the proportion and location of fines on the modulus of elasticity (MOE) and modulus of rupture (MOR) of oriented strandboard. The research program employed a 91 cm by 91 cm (3 ft by 3 ft) electrically heated laboratory press to produce OSB in two phases: alternating layers of strands and fines (a "homogeneous" distribution); and, fines in the core only (sandwich construction with multiple layers of strands adjacent to one another and only one layer of fines). In both cases, the strands were oriented parallel to one another and the parallel orientation was confirmed using an imaging system (SAM-Weyerhaeuser). The homogeneous distribution results showed that for a constant density: • MOE decreased in linear fashion with an increase in fines as confirmed with literature data; • MOR decreased linearly with increased fines; • The mechanical properties are amenable to modeling using the Rule of Mixtures. The sandwich construction results showed that for a constant density: • MOE (in the plank orientation) did not decrease in a linear fashion with an increase in fines; • MOE/MOR (in the joist orientation) decreased linearly with an increase in fines; • The joist properties are amenable to modeling using the Rule of Mixtures; • The plank MOE can be modeled using simple beam bending theory; • The MOR (plank orientation) cannot be modeled using either Rule of Mixtures or simple beam bending theory • Failure mode in the plank orientation can be predicted (for these specific conditions); i.e., boards between 10 to 45% fines typically fail in shear • The end use of the panel (i.e. as a joist or as a plank) affects the degree to which fines affect the bending properties This work suggests that it may be possible to increase the use of fines in sheathing products while maintaining individual mill strength requirements if the fines are limited to the middle of the panel. The effect of fines on the pressing cycle and the effect of adding fines to the center of the panel on other strength properties such as the nail holding or the shear strength properties are beyond the scope of this work and have yet to be explored.
Tau lepton polarization in quasielastic neutrino-nucleon scattering
Creators: name: Kuzmin, Konstantin S.
name: Lyubushkin, Vladimir V.
name: Naumov, Vadim A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We derive structure functions for the quasielastic production of octet baryons in neutrino and antineutrino interactions with nucleons and study the polarization of tau leptons produced in the $Δ{Y}=0$ reactions. Possible impact of the charged second-class currents is investigated by adopting a simple phenomenological parametrization for the nonstandard scalar and tensor nucleon form factors. Our choice of the unknown parameters is made to satisfy the limits obtained in the (anti)neutrino scattering experiments and rigid restrictions derived from the nuclear structure studies.
description: Contribution to the 3rd International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region, 17-21 March, Gran Sasso (Italy)
Fully Automated Photogrammetric Data Segmentation and Object Information Extraction Approach for Creating Simulation Terrain
Creators: name: Chen, Meida
name: Feng, Andrew
name: McCullough, Kyle
name: Prasad, Pratusha Bhuvana
name: McAlinden, Ryan
name: Soibelman, Lucio
name: Enloe, Mike
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Our previous works have demonstrated that visually realistic 3D meshes can be automatically reconstructed with low-cost, off-the-shelf unmanned aerial systems (UAS) equipped with capable cameras, and efficient photogrammetric software techniques. However, such generated data do not contain semantic information/features of objects (i.e., man-made objects, vegetation, ground, object materials, etc.) and cannot allow the sophisticated user-level and system-level interaction. Considering the use case of the data in creating realistic virtual environments for training and simulations (i.e., mission planning, rehearsal, threat detection, etc.), segmenting the data and extracting object information are essential tasks. Thus, the objective of this research is to design and develop a fully automated photogrammetric data segmentation and object information extraction framework. To validate the proposed framework, the segmented data and extracted features were used to create virtual environments in the authors previously designed simulation tool i.e., Aerial Terrain Line of Sight Analysis System (ATLAS). The results showed that 3D mesh trees could be replaced with geo-typical 3D tree models using the extracted individual tree locations. The extracted tree features (i.e., color, width, height) are valuable for selecting the appropriate tree species and enhance visual quality. Furthermore, the identified ground material information can be taken into consideration for pathfinding. The shortest path can be computed not only considering the physical distance, but also considering the off-road vehicle performance capabilities on different ground surface materials.
Isolation and characterization of flavonoids from Tapirira guianensis leaves with vasodilatory and myeloperoxidase-inhibitory activities
Creators: name: Calassara, Laura L.
name: Shaft C. Pinto
name: Condack, Cecília P. M.
name: Leite, Beatriz F.
name: Nery, Ludmilla C. Do E. S.
name: Luzineide W. Tinoco
name: Aguiar, Fernando A.
name: Leal, Ivana C. R.
name: Martins, Samantha M.
name: Silva, Leandro L. Da
name: Raimundo, Juliana M.
name: Muzitano, Michelle F.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Hematology

description: The aim of this study was to perform the isolation and characterization of vasodilatory flavonoids from Tapirira guianensis Aubl. (Annacardiaceae) leaves. In this context, ethyl acetate fraction (EA fraction) was obtained and subjected to fractionation batches by HSCCC affording: myricetin 3-O-α-L-rhamnopyranoside (myricitrin, 1); quercetin 3-O-(6”-O-galloyl)-β-D-galactopyranoside (2); quercetin 3-O-α-L-arabinofuranoside (avicularin, 3); and quercetin 3-O-α-L-rhamnopyranoside (quercitrin, 4). Myricitrin (1) induced a relaxation of 56.07 ± 13.04% at 300 μM (P 2) (IC50 1.0 ± 0.3 µM) was the strongest peroxidase inhibitor. In conclusion, it was possible to verify that myricitrin together with quercetin are mainly responsible for vasodilatory potential, besides flavonoid 2 for myeloperoxidase inhibition. Together these flavonoids seem to be responsible for Tapirira guianensis cardiovascular effects.
Evaluating the Economic Impact of Farmers’ Markets Using an Opportunity Cost Framework
Creators: name: Hughes, David W.
name: Brown, Cheryl
name: Miller, Stacy
name: McConnell, Tom
name: Hughes, David W.
name: Brown, Cheryl
name: Miller, Stacy
name: McConnell, Tom
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: farmers’ markets
subject: input-output models
subject: net economic impact

description: Farmers’ markets presumably benefit local economies through enhanced retention of local dollars. Unlike other studies, the net impact of farmers’ markets on the West Virginia economy is examined. Producer survey results are used in estimating annual direct sales ($1.725 million). Using an IMPLAN-based input-output model, gross impacts are 119 jobs (69 full-time equivalent jobs) and $2.389 million in output including $1.48 million in gross state product (GSP). When the effect of direct revenue losses are included (primarily for grocery stores), the impact is reduced to 82 jobs (43 full-time equivalent jobs), $1.075 million in output, and $0.653 million in GSP.
Microdon analis
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Microdon
Microdon analis

description: Microdon analis (MACQUART, 1842)
Bgld, Jois, Schieferberg, 28.5.17.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 772, DOI: 10.5281/zenodo.4004374
Online learning of both state and dynamics using ensemble Kalman filters
Creators: name: Bocquet, Marc
name: Farchi, Alban
name: Malartic, Quentin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 62M20, 49M41, 86-08

description: The reconstruction of the dynamics of an observed physical system as a surrogate model has been brought to the fore by recent advances in machine learning. To deal with partial and noisy observations in that endeavor, machine learning representations of the surrogate model can be used within a Bayesian data assimilation framework. However, these approaches require to consider long time series of observational data, meant to be assimilated all together. This paper investigates the possibility to learn both the dynamics and the state online, i.e. to update their estimates at any time, in particular when new observations are acquired. The estimation is based on the ensemble Kalman filter (EnKF) family of algorithms using a rather simple representation for the surrogate model and state augmentation. We consider the implication of learning dynamics online through (i) a global EnKF, (i) a local EnKF and (iii) an iterative EnKF and we discuss in each case issues and algorithmic solutions. We then demonstrate numerically the efficiency and assess the accuracy of these methods using one-dimensional, one-scale and two-scale chaotic Lorenz models.
description: 26 pages, 7 figures
Improved Wójcik's Eavesdropping Attack on Ping-Pong Protocol Without Eavesdropping-Induced Channel Loss
Creators: name: Zhang, Zhan-jun
name: Li, Yong
name: Man, Zhong-xiao
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The eavesdropping scheme proposed by Wójcik [Phys. Rev. Lett. {\bf 90},157901(2003)] on the ping-pong protocol [Phys. Rev. Lett. {\bf 89}, 187902(2002)] is improved by constituting a new set of attack operations. The improved scheme has a zero eavesdropping-induced channel loss and produces perfect anticorrelation. Therefore, the eavesdropper Eve can safely attack all the transmitted bits and the eavesdropping information gain can always exceed the legitimate user's information gain in the whole domain of the quantum channel transmission efficiency $η$, i.e., [0,100%]. This means that the ping-pong protocol can be completely eavesdropped in its original version. But the improvement of the ping-pong protocol security produced by Wójcik is also suitable for our eavesdropping attack.
description: 5 pages
Modeling Willingness to Pay for Land Conservation Easements: Treatment of Zero and Protest Bids and Application and Policy Implications
Creators: name: Cho, Seong-Hoon
name: Yen, Steven T.
name: Bowker, James Michael
name: Newman, David H.
name: Cho, Seong-Hoon
name: Yen, Steven T.
name: Bowker, James Michael
name: Newman, David H.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Land Economics/Use
subject: Political Economy
subject: censored dependent variable
subject: conservation easement
subject: protest bid
subject: sample selection
subject: WTP

description: This study compares an ordered probit model and a Tobit model with selection to take into account both true zero and protest zero bids while estimating the willingness to pay (WTP) for conservation easements in Macon County, NC. By comparing the two models, the ordered/unordered selection issue of the protest responses is analyzed to demonstrate how the treatment of protest responses can significantly influence WTP models. Both models consistently show that income and knowledge are positive and significant factors, while distance to poorer quality streams and duration of residency are negative and significant factors on WTP.
A critical study of information flow and processing of adverse drug reactions with the example of sodium valproate, an anticonvulsant drug
Creators: name: R.C. Thapliyal
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A critical study of information flow and processing of adverse drug reactions with the example of sodium valproate, an anticonvulsant drug
Nanoscale-confined Terahertz Polaritons in a van der Waals Crystal
Creators: name: de Oliveira, Thales V. A. G.
name: Nörenberg, Tobias
name: Álvarez-Pérez, Gonzalo
name: Wehmeier, Lukas
name: Taboada-Gutiérrez, Javier
name: Obst, Maximilian
name: Hempel, Franz
name: Lee, Eduardo J. H.
name: Klopf, John M.
name: Errea, Ion
name: Nikitin, Alexey Y.
name: Kehr, Susanne C.
name: Alonso-Gonzaléz, Pablo
name: Eng, Lukas M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electromagnetic field confinement is crucial for nanophotonic technologies, since it allows for enhancing light-matter interactions, thus enabling light manipulation in deep sub-wavelength scales. In the terahertz (THz) spectral range, radiation confinement is conventionally achieved with specially designed metallic structures - such as antennas or nanoslits - with large footprints due to the rather long wavelengths of THz radiation. In this context, phonon polaritons - light coupled to lattice vibrations - in van der Waals (vdW) crystals have emerged as a promising solution for controlling light beyond the diffraction limit, as they feature extreme field confinements and low optical losses. However, experimental demonstration of nanoscale-confined phonon polaritons at THz frequencies has so far remained elusive. Here, we provide it by employing scattering-type scanning near-field optical microscopy (s-SNOM) combined with a free-electron laser (FEL) to reveal a range of low-loss polaritonic excitations at frequencies from 8 to 12 THz in the vdW semiconductor $α-MoO_3$. We visualize THz polaritons with i) in-plane hyperbolic dispersion, ii) extreme nanoscale field confinement (below $λ_o/75$) and iii) long polariton lifetimes, with a lower limit of > 2 ps.
The semiclassical limit on a star-graph with Kirchhoff conditions
Creators: name: Cacciapuoti, Claudio
name: Fermi, Davide
name: Posilicano, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q20, 81Q35, 47A40

description: We consider the dynamics of a quantum particle of mass $m$ on a $n$-edges star-graph with Hamiltonian $H_K=-(2m)^{-1}\hbar^2 Δ$ and Kirchhoff conditions in the vertex. We describe the semiclassical limit of the quantum evolution of an initial state supported on one of the edges and close to a Gaussian coherent state. We define the limiting classical dynamics through a Liouville operator on the graph, obtained by means of Kre\uın's theory of singular perturbations of self-adjoint operators. For the same class of initial states, we study the semiclassical limit of the wave and scattering operators for the couple $(H_K,H_{D}^{\oplus})$, where $H_{D}^{\oplus}$ is the free Hamiltonian with Dirichlet conditions in the vertex.
description: 31 pages
Incorporating Environmentally Compliant Manure Nutrient Disposal Costs into Least-Cost Livestock Ration Formulation
Creators: name: Hadrich, Joleen C.
name: Wolf, Christopher A.
name: Black, J. Roy
name: Harsh, Stephen B.
name: Hadrich, Joleen C.
name: Wolf, Christopher A.
name: Black, J. Roy
name: Harsh, Stephen B.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: Livestock Production/Industries
subject: environmental compliance
subject: linear programming
subject: livestock rations
subject: manure disposal

description: Livestock rations are formulated to minimize feed cost subject to nutritional requirements for a target performance level, which ignores the potentially substantial cost of disposing of nutrients fed in excess of nutritional requirements. We incorporate nutrient disposal costs into a modified least-cost ration formulation model to arrive at a joint least-cost decision that minimizes the sum of feed and net nutrient disposal costs. The method is demonstrated with phosphorus disposal costs on a representative dairy farm. Herd size, land availability and proximity, crop rotation, and initial soil phosphorus content are shown to be important in determining phosphorus disposal costs.
PHILOS Early Construct Failure in PHF
Creators: name: Fernández, Alberto
name: Jaeger, Martin
name: Jupiter, Jesse
name: Lambert, Simon
name: Regazzoni, Pietro
Publisher: name: Zenodo
Year: 2021
Subjects: proximal humerus
fracture
proximal humerus fracture
non-operative
hanging arm
pendulum
joint stiffness
shoulder motion
functional outcome
AVN
PHILOS
fracture consolidation

description: How frequent is it? Wrong indication? Wrong execution? Wrong rehab? We found 5 early failures (out of 78 PHILOS cases) at icuc database at October 2020 1 problem case is added
X-ray Spectroscopy of Cooling Clusters
Creators: name: Peterson, J. R.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the X-ray spectra of the cores of clusters of galaxies. Recent high resolution X-ray spectroscopic observations have demonstrated a severe deficit of emission at the lowest X-ray temperatures as compared to that expected from simple radiative cooling models. The same observations have provided compelling evidence that the gas in the cores is cooling below half the maximum temperature. We review these results, discuss physical models of cooling clusters, and describe the X-ray instrumentation and analysis techniques used to make these observations. We discuss several viable mechanisms designed to cancel or distort the expected process of X-ray cluster cooling.
description: To appear in Physics Reports, 71 pages, 20 figures
The essential oil of Lactuca longidentata Moris and its antioxidant and antimicrobial activities
Creators: name: Federico, Lai
name: Maggi Filippo
name: Tirillini Bruno
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Lactuca longidentata Moris (Asteraceae) is an endemic species growing only on Mesozoic limestone of central Sardinia. In the present study, the essential oil of the epigeal part of the plant was analyzed by gas chromatography-mass spectrometry (GC/MS). The main volatile components were α-terpineol (27.64%) and limonene (25.8%). The essential oils showed a noteworthy ability of scavenging free radical species (1,1-diphenyl-2-picrylhydrazyl (DPPH) test systems) with a mean half maximal inhibitory concentration IC50 of 32.24 μg/mL. More significant was the inhibition of lipid oxidation that corresponded to an activity 1.5 times lower than that of 2,6-bis(1,1-dimethylethyl)-4-methylphenol (BHT). The essential oil was also assayed on Staphylococcus aureus, Bacillus subtilis, Enterococcus faecalis, Escherichia coli, and Candida albicans by the microdilution broth method and was particularly active against B. subtilis, with a minimal inhibitory concentration (MIC) value of 100 μg/mL.
Thermodynamics of heavy quarkonium in magnetic field background
Creators: name: Zhou, Jing
name: Chen, Xun
name: Zhao, Yan-Qing
name: Ping, Jialun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effect of magnetic field on heavy quark-antiquark pair in both Einstein-Maxwell(EM) and Einstein-Maxwell-Dilaton(EMD) model. The interquark distance, free energy, entropy, binding energy and internal energy of the heavy quarkonium are calculated. It is found that the free energy suppresses and the entropy increases quickly with the increase of the magnetic field $B$. The binding energy vanishes at smaller distance when increasing the magnetic field, which indicates the quark-antiquark pair dissociates at smaller distance. The internal energy which consists of free energy and entropy will increase at large separating distance for non-vanishing magnetic field. These conclusions are consistent both in the EM and EMD model. Moreover, we also find that the quarkonium will dissociate easier in the parallel direction than that in the transverse direction for EMD model, but the conclusion is opposite in EM model. Lattice results are in favor of EMD model. Besides, a Coulomb-plus-linear potential(Cornell potential) can be realized only in EMD model. Thus, a dilaton field is proved to be important in holographic model. Finally, we also show that the free energy, entropy and internal energy of a single quark in EMD model with the presence of magnetic field.
description: 21 pages, 13 figures
Spin filtering effect in intrinsic 2D magnetic semiconductor Cr2Ge2Te6
Creators: name: Feng, Honglei
name: Shi, Gang
name: Yan, Dayu
name: Li, Yong
name: Shi, Youguo
name: Xu, Yang
name: Xiong, Peng
name: Li, Yongqing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: All van der Waals (vdW) Fe3GeTe2/Cr2Ge2Te6/graphite magnetic heterojunctions have been fabricated via mechanical exfoliation and stacking, and their magnetotransport properties are studied in detail. At low bias voltages large negative junction magnetoresistances have been observed and are attributed to spin-conserving tunneling transport across the insulating Cr2Ge2Te6 layer. With increasing bias, a crossover to Fowler-Nordheim tunneling takes place. The negative sign of the tunneling magnetoresistance (TMR) suggests that the bottom of conduction band in Cr2Ge2Te6 belongs to minority spins, opposite to the findings of some first-principles calculations. This work shows that the vdW heterostructures based on 2D magnetic insulators are a valuable platform to gain further insight into spin polarized tunneling transport, which is the basis for pursuing high performance spintronic devices and a large variety of quantum phenomena.
description: 17 pages, 4 figures. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing
title: Langzeitarchivierung von Online-Publikationen digitaler Repositorien
title: Untersuchung am Beispiel der Publikationssoftware OPUS
titleType: Subtitle
Creators: name: Winkler, Marco
Publisher: name: Zenodo
Year: 2008

description: In der vorliegenden Diplomarbeit werden die wesentlichen Faktoren und organisatorischen sowie technischen Rahmenbedingungen für die digitale Langzeitarchivierung von auf digitalen Repositorien veröffentlichten wissenschaftlichen Dokumenten identifiziert und beschrieben. Die Darstellung orientiert sich am OAIS-Referenzmodell sowie nationalen und internationalen Standards und Kriterienkatalogen, aus denen in den ersten drei Kapiteln ein klar determiniertes, komplexes Begriffsnetzwerk abgeleitet und zur Diskussion gestellt wird. Als Bezugssystem für die Implementierung der technischen Anforderungen wird der Umsetzungsstand der Publikationssoftware OPUS herangezogen. Darauf aufbauend wird für die beteiligten Akteure ein Handlungsrahmen für die durchzuführenden, notwendigen nächsten Schritte eröffnet.
description: This diploma thesis identifies and depicts the essential factors and organizational as well as technical conditions for a digital long-term preservation of academic documents published on digital repositories. The description is guided by the OAIS reference model and by national and international standards and criteria catalogues on the basis of which a clearly determined and complex network of terms was being derived and displayed in the first three chapters. The state of realization of the repository software OPUS was brought in reference to the implementation of the technical requirements. Based on these results, an operational framework is being opened to all parties concerned within which they can take the next necessary steps.
Effects of ocean climate and upriver migratory constraints on the bioenergetics, fecundity, and morphology of Wild Fraser River Salmon
Creators: name: Crossin, Glenn T.
Publisher: name: University of British Columbia
Year: 2009

description: Adult sockeye salmon {Oncorhynchus nerka) depend on fixed somatic energy reserves to fuel their upriver migrations to spawning grounds and to complete sexual maturation before their inevitable death. These endogenous reserves are developed while feeding at sea, and are influenced by oceanographic factors (ocean currents and upwelling, temperature, zooplankton production). Upon return to the Fraser River, sockeye travel distances of <100 to >1100 km, and ascend elevations ranging from near sea-level to 1200 m to reach their spawning grounds throughout the diverse Fraser River watershed in British Columbia, Canada. I calculated the energy content of somatic and reproductive tissues, and took several morphometric measurements, in five populations of sockeye to examine how both energetic condition and morphology was influenced by migratory difficulty. Sockeye travelling to high and distant spawning grounds began their migration with higher levels of somatic energy and were smaller and more fusiform than those travelling to lower, less-distant grounds. The former were also less sexually developed at the start of migration, presumably a means for conserving energy necessary for upriver migration. These patterns were strongly correlated with the degree of upriver migratory difficulty each populations faces. Collectively, results suggest that upriver populations of sockeye are under strong selective pressure for bioenergetic efficiency. The importance of this efficiency diminishes as the difficulty of migration diminishes. Additionally, selection appears to favour an energetically efficient fusiform morphology in upriver populations. Comparing recent bioenergetic and morphological data from five Fraser River sockeye and pink salmon (O. gorbuscha) populations and with data collected for each in the 1950s and in 1983 respectively, I looked to see whether a decadal-scale energetic shift has occurred in the energetic provisioning of salmon just prior to upriver spawning migration, and to associate these energetic shifts, if present, to conditions in the ocean environment. Historically, the climate of the North Pacific Ocean is know to change, however, since 1977, changes in ocean climate have been linked to anthropogenic CO₂ emissions. The affect on the ocean environment has resulted in broad-scale bio-physical changes that ultimately seem to affect both the acquisition and storage of bioenergy in Pacific salmon. I detected a decline in somatic bioenergy in two upriver populations of Fraser River sockeye salmon between sampling decades, and show that in El Niño years, that this decline is amplified. I discuss these results in light of the recent climatological and oceanographic literature.
Economic Analysis of Crop Production and Dairy Farming on Marginal and Small Farms in Punjab
Creators: name: Singh, Mandeep
name: Joshi, A.S.
name: Singh, Mandeep
name: Joshi, A.S.
Publisher: name: Unknown
Year: 2008
Subjects: Farm Management

description: The economic analysis of crop production and dairy farming has been reported for marginal and small farmers in Punjab for the year 2003-04. It has been found that a majority of the farm households are not able to meet their requirements from their income from crops and dairy farming. Further dairy farming has emerged as a major allied enterprise for supplementing the income of marginal and small farmers in Punjab. Income from off-farm sources has been identified another important factor contributing significantly to the disposable income of these farm households. The study has suggested to further exploit the potential of off-farm sources towards meeting the domestic expenditure. Also, the technical efficiency of crops and dairy farming should be improved to provide more income to farmers.
Detection of vacuum entanglement in a linear ion trap
Creators: name: Retzker, A.
name: Cirac, J. I.
name: Reznik, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and study a method for detecting ground-state entanglement in a chain of trapped ions, which realizes a suggested scheme for detecting vacuum entanglement in quantum field theory. We show that the entanglement between single ions or groups of ions can be swapped to the internal levels of two ions by sending laser pulses that couple the internal and motional degrees of freedom. This allows to entangle two ions without actually doing gates. A proof of principle of the effect can be realized with two trapped ions and is feasible with current technology.
description: 4 pages 8 figures
Kopsanone and N-oxide isolated from Aspidosperma macrocarpon Mart. (Apocynaceae) leaves and their MAO-A inhibitory activity
Creators: name: Matheus Ardenghi Peixoto
name: Lucilia Kato
name: Oliveira, Cecília Maria Alves De
name: Boniek Gontijo
name: Cleuza Conceição Da Silva
name: Pomini, Armando Mateus
name: Luiz C. Klein-Júnior
name: Passos, Carolina Dos Santos
name: Henriques, Amélia T.
name: Geanderson Bannwart
name: Santin, Silvana Maria De Oliveira
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 60506 Virology

description: Aspidosperma macrocarpon Mart., popularly known as ‘guatambu’ or ‘peroba’, is found from North American (Mexico) to South American (Argentina) continents and in Brazil. Two indole alkaloids were isolated from leaves of A. macrocarpon, kopsanone (1) and unreported N(4)-oxide-kopsanone (2).
A new cytotoxic cardenolide from the roots of Calotropis gigantea
Creators: name: Nguyen, Mai T. T.
name: Khang D. H. Nguyen
name: Dang, Phu H.
name: Nguyen, Hai X.
name: Awale, Suresh
name: Nguyen, Nhan T.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Bioactivity-guided isolation of the CHCl3-soluble fraction of the roots of Calotropis gigantea was carried out to obtain a new cardenolide glycoside, caloside G. Its absolute structure was elucidated based on NMR and ECD spectroscopic data interpretation. Caloside G showed noteworthy cytotoxicity against the PANC-1 human pancreatic and HeLa human cervical carcinoma cell lines, with the submicromolar IC50 values of 0.038 and 0.09 µM, respectively.
Analysis of Spatial Cointegration amongst Major Wholesale Egg Markets in India
Creators: name: Saran, Sandeep
name: Gangwar, L.S.
name: Saran, Sandeep
name: Gangwar, L.S.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business

description: The performance of egg market has been studied through measurement of oneness in the egg markets. For this purpose, the Engle-Granger Cointegration test procedure has been applied to egg price series for major wholesale egg markets in the country, viz. Nammakal (Tamil Nadu), Calcutta, Chennai, Bangalore, Delhi and Hyderabad for the period 1982 to 2000. The study has indicated that the six major wholesale egg markets in the country are cointegrated apparently due to performance of market intelligence functions by the National Egg Coordination Committee (NECC) which helps in transmitting price signals across the length and breadth of the country through print media on day-to-day basis. The high degree of cointegration amongst various markets indicates that these markets are competitive and efficient at the wholesale levels. However, it still remains to be examined whether the poultry farmers and traders at the grass-root level are able to realize the prices declared by the NECC.