cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tracing the accretion-ejection link at young stars through time
Creators: name: Erkal, Jessica
name: Coffey, Deirdre
name: Manara, Carlo Felice
name: Nisini, Brunella
name: Beccari, Giacomo
name: Vincenzi, Maria
name: Schneider, Christian
name: Natta, Antonella
name: Alcalá, Juan Manuel
Publisher: name: Zenodo
Year: 2021
Subjects: Star formation
Young stars
Accretion
Jets and Outflows

description: High-resolution infrared observations allow us to probe regions close to young stars, normally obscured by the surrounding envelope. While a young star is actively accreting material from the disk onto the star, jets and outflows remove mass from the system. The connection between accretion and ejection is relevant for the final star and disk mass, and therefore has implications for planet formation. We probe this connection between the two processes using X-Shooter spectra of the infrared He I 1 micron line in a large sample of young stars in the Lupus and Upper Scorpius star forming regions. The He I line traces both accretion and ejection in the innermost regions close to the star, therefore allowing us to connect the accretion and ejection properties of the system to stellar properties and to the evolutionary stage of the star.
description: Presented at "STAR FORMATION: FROM CLOUDS TO DISCS - A Tribute to the Career of Lee Hartmann" in Malahide, Dublin on October 18-21 2021
More about Birkhoff's Invariant and Thorne's Hoop Conjecture for Horizons
Creators: name: Cvetic, M.
name: Gibbons, G. W.
name: Pope, C. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A recent precise formulation of the hoop conjecture in four spacetime dimensions is that the Birkhoff invariant $β$ (the least maximal length of any sweepout or foliation by circles) of an apparent horizon of energy $E$ and area $A$ should satisfy $β\le 4 πE$. This conjecture together with the Cosmic Censorship or Isoperimetric inequality implies that the length $\ell$ of the shortest non-trivial closed geodesic satisfies $\ell^2 \le πA$. We have tested these conjectures on the horizons of all four-charged rotating black hole solutions of ungauged supergravity theories and find that they always hold. They continue to hold in the the presence of a negative cosmological constant, and for multi-charged rotating solutions in gauged supergravity. Surprisingly, they also hold for the Ernst-Wild static black holes immersed in a magnetic field, which are asymptotic to the Melvin solution. In five spacetime dimensions we define $β$ as the least maximal area of all sweepouts of the horizon by two-dimensional tori, and find in all cases examined that $ β(g) \le \frac{16 π}{3} E$, which we conjecture holds quiet generally for apparent horizons. In even spacetime dimensions $D=2N+2$, we find that for sweepouts by the product $S^1 \times S^{D-4}$, $β$ is bounded from above by a certain dimension-dependent multiple of the energy $E$. We also find that $\ell^{D-2}$ is bounded from above by a certain dimension-dependent multiple of the horizon area $A$. Finally, we show that $\ell^{D-3}$ is bounded from above by a certain dimension-dependent multiple of the energy, for all Kerr-AdS black holes.
description: 25 pages
Brain Radiotherapy during pregnancy: A Dosimetric Study with OSLD
Creators: name: E. Villegas
name: F. Guida
name: A. Germani
name: F. De Monte
name: M. Fusella
name: A. Roggio
name: A. Scaggion
name: R. Zandona
name: F. Busato
name: M. Paiusco
Publisher: name: Zenodo
Year: 2021

description: Presented at International Conference on Advances in Radiation Oncology (ICARO-3)
Discontinuous Transition in a Boundary Driven Contact Process
Creators: name: Costa, A.
name: Blythe, R. A.
name: Evans, M. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The contact process is a stochastic process which exhibits a continuous, absorbing-state phase transition in the Directed Percolation (DP) universality class. In this work, we consider a contact process with a bias in conjunction with an active wall. This model exhibits waves of activity emanating from the active wall and, when the system is supercritical, propagating indefinitely as travelling (Fisher) waves. In the subcritical phase the activity is localised near the wall. We study the phase transition numerically and show that certain properties of the system, notably the wave velocity, are discontinuous across the transition. Using a modified Fisher equation to model the system we elucidate the mechanism by which the the discontinuity arises. Furthermore we establish relations between properties of the travelling wave and DP critical exponents.
description: 14 pages, 9 figures
Multicomponent Dark Matter in Supersymmetric Hidden Sector Extensions
Creators: name: Feldman, Daniel
name: Liu, Zuowei
name: Nath, Pran
name: Peim, Gregory
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Most analyses of dark matter within supersymmetry assume the entire cold dark matter arising only from weakly interacting neutralinos. We study a new class of models consisting of $U(1)^n$ hidden sector extensions of the MSSM that includes several stable particles, both fermionic and bosonic, which can be interpreted as constituents of dark matter. In one such class of models, dark matter is made up of both a Majorana dark matter particle, i.e., a neutralino, and a Dirac fermion with the current relic density of dark matter as given by WMAP being composed of the relic density of the two species. These models can explain the PAMELA positron data and are consistent with the anti-proton flux data, as well as the photon data from FERMI-LAT. Further, it is shown that such models can also simultaneously produce spin independent cross sections which can be probed in CDMS-II, XENON-100 and other ongoing dark matter experiments. The implications of the models at the LHC and at the NLC are also briefly discussed.
description: Journal: Physical Review D, Latex 32 pages, 4 eps figures
Application of novel techniques to devise nutritional therapies in patients with glycogen storage disease type I and phenylketonuria
Creators: name: Turki, Abrar Mohammed
Publisher: name: University of British Columbia
Year: 2021

description: Background: Glycogen storage disease type I (GSD I) is caused by deficiencies in glucose-6-phosphatase/transporter complexes, resulting in fasting hypoglycemia. A novel cornstarch (Glycosade®) is available to treat hypoglycemia, yet choice of carbohydrate to achieve desirable glycemic control is debated. Phenylketonuria (PKU) is caused by phenylalanine hydroxylase deficiency. Treatment is primarily phenylalanine restriction. A new formula, (PKU sphere™) with glycomacropeptide (GMP) and low phenylalanine is available, yet untested for optimal protein synthesis. Objectives: (1) Establishing the use of 13C-glucose breath test (13C-GBT) to examine in vivo glucose metabolism in healthy adults, (2) Using 13C-GBT measure utilization of the standard, uncooked cornstarch (UCCS) vs. Glycosade® in GSD Ia, (3) Using 13C-GBT measure utilization of UCCS and Glycosade® in GSD Ib, before and after hematopoietic stem cell transplantation (HSCT), and (4) Using L-[1-13C]-lysine (indicator amino acid oxidation, IAAO) to determine whole body protein synthesis with GMP vs. standard L-amino acid in PKU. Methods: (1) Ten healthy adults underwent 13C-GBT protocol twice: with [U-13C6] D-glucose and without isotope to test sensitivity of natural 13C-enrichment. (2) Three GSD Ia (12y, 13y, 28y) and six healthy controls underwent 13C-GBT twice: with UCCS or Glycosade®. (3) A case of GSD Ib underwent 13C-GBT protocol once pre-HSCT and 3 times post-HSCT. (4) Five PKU adults were studied using IAAO protocol for protein synthesis with multiple intakes of GMP vs. standard L-amino acid. Results: (1) 13C-GBT protocol was sensitive with maximum enrichments at 200 min without and with [U-13C6] D-glucose. (2) Glycosade® utilization was lower than UCCS utilization in 12y and 13y GSD Ia, but was similar in the 28y GSD Ia. (3) Glucose oxidation from UCCS was higher in GSD Ib pre-HSCT, which reduced and stabilized 5 months post-HSCT. (4) Whole body protein synthesis responded similarly with increasing intakes of GMP or standard L-amino acid, resulting in high protein bioavailability (99.98%) in GMP. Conclusion: Findings show that 13C-GBT test is a novel functional test to examine glucose metabolism in GSD I, and test new formulas like Glycosade®. In PKU adults, the IAAO method showed for the first time, bioavailability of GMP is high and optimal for protein synthesis.
Reply to "Comment on 'Semiquantum-key distribution using less than four quantum states' "
Creators: name: Zou, Xiangfu
name: Qiu, Daowen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently Boyer and Mor pointed out the first conclusion of Lemma 1 in our original paper is not correct, and therefore, the proof of Theorem 5 based on Lemma 1 is wrong. Furthermore, they gave a direct proof for Theorem 5 and affirmed the conclusions in our original paper. In this reply, we admit the first conclusion of Lemma 1 is not correct, but we need to point out the second conclusion of Lemma 1 is correct. Accordingly, all the proofs for Lemma 2, Lemma 3, and Theorems 3--6 are only based on the the second conclusion of Lemma 1 and therefore are correct.
description: 1 page
title: ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð´Ð»Ñ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐºÑÐ¿ÐµÑÑÐ½ÑÑ Ð¾ÑÐµÐ½Ð¾Ðº Ð½Ð° Ð±Ð°Ð·Ðµ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð° Ð.Ð. ÐÐµÐ½Ð¸ÑÐ¾Ð²Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: A program for automating the processing of expert assessments based on A. A. Denisovâs information approach
Creators: name: ÐÐ²Ð°Ð½Ð¾Ð², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÑÐ¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·
Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ
ÑÐºÑÐ¿ÐµÑÑÐ½ÑÐµ Ð¾ÑÐµÐ½ÐºÐ¸
Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
JAVA
system analysis
information model
expert examinations
programming

description: ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ: 1. ÐÐ±Ð·Ð¾Ñ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ»Ð¾Ð¶Ð½ÑÑ ÑÐºÑÐ¿ÐµÑÑÐ¸Ð·, Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½ÑÑ Ð½Ð° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¾ÑÐµÐ½Ð¾Ðº Ð. Ð. ÐÐµÐ½Ð¸ÑÐ¾Ð²Ð°. 2. ÐÐ½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÑÑÐµÐ´ÑÑÐ² Ð´Ð»Ñ ÑÐ°Ð±Ð¾ÑÑ Ñ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ»Ð¾Ð¶Ð½ÑÑ ÑÐºÑÐ¿ÐµÑÑÐ¸Ð·. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ð´Ð¾ÑÑÐ¾Ð¸Ð½ÑÑÐ² Ð¸ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐºÐ¾Ð² ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ¾Ðº, Ð¿Ð¾ÑÑÐ°Ð½Ð¾Ð²ÐºÐ° Ð·Ð°Ð´Ð°ÑÐ¸. 3. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ Ð±ÑÐ´ÑÑÐµÐ³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ; ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ðº ÐµÐ³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÑ Ð¸ Ð¸Ð½ÑÑ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹. 4. Ð¡ÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ ÑÑÐµÐ´ÑÑÐ² ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¸ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÐ±Ð¾ÑÐ° ÑÑÐµÐ´ÑÑÐ² Ð´Ð»Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ. 5. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð´Ð»Ñ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐºÑÐ¿ÐµÑÑÐ½ÑÑ Ð¾ÑÐµÐ½Ð¾Ðº Ð½Ð° Ð±Ð°Ð·Ðµ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð°; ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ. 6. ÐÐ¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ° ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ²Ð° Ð¿Ð¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ.
description: Tasks that were solved in the course of the work: 1. Review of methods of organizing complex expert examinations based on the use of A. A. Denisovâs information assessments. 2. Analysis of existing software tools for working with methods of organizing complex expert examinations. Determining the advantages and disadvantages of existing software, setting the task. 3. Determining of the future application functionality, requirements for its interface and other requirements. 4. Comparative analysis of the development tools capabilities, and justification of the toolsâ choice for software solution implementation. 5. Development of software for work automation according to the chosen method of organizing complex expert examinations and its testing. 6. Preparation of a user guide for the created software solution.
Nucleon electromagnetic form factors from the covariant Faddeev equation
Creators: name: Eichmann, Gernot
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the electromagnetic form factors of the nucleon in the Poincare-covariant Faddeev framework based on the Dyson-Schwinger equations of QCD. The general expression for a baryon's electromagnetic current in terms of three interacting dressed quarks is derived. Upon employing a rainbow-ladder gluon-exchange kernel for the quark-quark interaction, the nucleon's Faddeev amplitude and electromagnetic form factors are computed without any further truncations or model assumptions. The form factor results show clear evidence of missing pion-cloud effects below a photon momentum transfer of ~2 GeV^2 and in the chiral region whereas they agree well with experimental data at higher photon momenta. Thus, the approach reflects the properties of the nucleon's quark core.
description: 23 pages, 10 figures, 2 tables
Additional file 3: of Discovery and characterization of the evolution, variation and functions of diversity-generating retroelements using thousands of genomes and metagenomes
Creators: name: Yan, Fazhe
name: Yu, Xuelin
name: Duan, Zhongqu
name: Lu, Jinyuan
name: Jia, Ben
name: Qiao, Yuyang
name: Sun, Chen
name: Wei, Chaochun
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Figure S3. Efficiency comparison with DGRscan (DOCX 28 kb)
Requirements for contractility in disordered cytoskeletal bundles
Creators: name: Lenz, Martin
name: Gardel, Margaret L.
name: Dinner, Aaron R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Actomyosin contractility is essential for biological force generation, and is well understood in highly organized structures such as striated muscle. Additionally, actomyosin bundles devoid of this organization are known to contract both in vivo and in vitro, which cannot be described by standard muscle models. To narrow down the search for possible contraction mechanisms in these systems, we investigate their microscopic symmetries. We show that contractile behavior requires non-identical motors that generate large enough forces to probe the nonlinear elastic behavior of F-actin. This suggests a role for filament buckling in the contraction of these bundles, consistent with recent experimental results on reconstituted actomyosin bundles.
description: 10 pages, 6 figures; text shortened
Optical Spectro-astrometry as a Test of Wind Driven Accretion
Creators: name: Otten, Noah
name: Whelan, Emma
name: Banzatti, Andrea
name: Pascucci, Ilaria
name: Dougados, Catherine
Publisher: name: Zenodo
Year: 2021
Subjects: Spectro-astrometry, Star & Planet Formation, Jets & Winds

description: Disks around young stars provide the material needed to build planets. Understanding how material in the disk disperses and evolves over time is vital in understanding planet formation. In recent years, theory has shifted from the classic picture of disk evolution via magneto-rational instability inducted turbulence in favor of a radially extended magnetohydrodynamic (MHD) disk winds which regulate accretion in disks and therefore are drivers of disk evolution. Recent surveys of young stars suggest that the low velocity component narrow component (LVC - NC) of the optical forbidden emission lines (FELs) traces a region close in (< 4 au from the star), the base of the MHD wind but doesn’t rule out the possibility of a thermal photoevaporative wind. In a pilot study of RU Lupi (Whelan et al. 2021) the LVC of the [OI] 6300Å and [SII] 6731Å forbidden lines was spatially resolved using spectro-astrometry (SA) and the thermal wind possibility for the origin of the LVC was ruled out. We now expand this pilot study to a sample of young low mass stars, with accretion rates spanning over the range over which disks evolve, to test whether the MHD origin of the LVC-NC is typical of other young low mass stars. This study will also test the main prediction of wind driven accretion models namely, that the mass accretion rate is approximately equal to the wind mass loss rate.
Exponential Time Complexity of Weighted Counting of Independent Sets
Creators: name: Hoffmann, Christian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Complexity (cs.CC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We consider weighted counting of independent sets using a rational weight x: Given a graph with n vertices, count its independent sets such that each set of size k contributes x^k. This is equivalent to computation of the partition function of the lattice gas with hard-core self-repulsion and hard-core pair interaction. We show the following conditional lower bounds: If counting the satisfying assignments of a 3-CNF formula in n variables (#3SAT) needs time 2^{Ω(n)} (i.e. there is a c>0 such that no algorithm can solve #3SAT in time 2^{cn}), counting the independent sets of size n/3 of an n-vertex graph needs time 2^{Ω(n)} and weighted counting of independent sets needs time 2^{Ω(n/log^3 n)} for all rational weights x\neq 0. We have two technical ingredients: The first is a reduction from 3SAT to independent sets that preserves the number of solutions and increases the instance size only by a constant factor. Second, we devise a combination of vertex cloning and path addition. This graph transformation allows us to adapt a recent technique by Dell, Husfeldt, and Wahlen which enables interpolation by a family of reductions, each of which increases the instance size only polylogarithmically.
description: Introduction revised, differences between versions of counting independent sets stated more precisely, minor improvements. 14 pages
Asymptotic energy profile of a wavepacket in disordered chains
Creators: name: Lepri, S.
name: Schilling, R.
name: Aubry, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the long time behavior of a wavepacket initially localized at a single site $n_0$ in translationally invariant harmonic and anharmonic chains with random interactions. In the harmonic case, the energy profile $ \bar{< e_n(t)>}$ averaged on time and disorder decays for large $|n-n_0|$ as a power law $\bar{< e_n(t)>}\approx C|n-n_0|^{-η}$ where $η=5/2$ and 3/2 for initial displacement and momentum excitations, respectively. The prefactor $C$ depends on the probability distribution of the harmonic coupling constants and diverges in the limit of weak disorder. As a consequence, the moments $< m_ν(t)>$ of the energy distribution averaged with respect to disorder diverge in time as $t^{β(ν)}$ for $ν\geq 2$, where $β=ν+1-η$ for $ν>η-1$. Molecular dynamics simulations yield good agreement with these theoretical predictions. Therefore, in this system, the second moment of the wavepacket diverges as a function of time despite the wavepacket is not spreading. Thus, this only criteria often considered earlier as proving the spreading of a wave packet, cannot be considered as sufficient in any model. The anharmonic case is investigated numerically. It is found for intermediate disorder, that the tail of the energy profile becomes very close to those of the harmonic case. For weak and strong disorder, our results suggest that the crossover to the harmonic behavior occurs at much larger $|n-n_0|$ and larger time.
description: To appear in Phys. Rev. E
Determining L(2,1)-Span in Polynomial Space
Creators: name: Junosza-Szaniawski, Konstanty
name: Rzą\zewski, Paweł
Publisher: name: arXiv
Year: 2011
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.2.2
subject: 68R10, 05C15, 05C85

description: A $k$-L(2,1)-labeling of a graph is a function from its vertex set into the set $\{0,...,k\}$, such that the labels assigned to adjacent vertices differ by at least 2, and labels assigned to vertices of distance 2 are different. It is known that finding the smallest $k$ admitting the existence of a $k$-L(2,1)-labeling of any given graph is NP-Complete. In this paper we present an algorithm for this problem, which works in time $O(\complexity ^n)$ and polynomial memory, where $\eps$ is an arbitrarily small positive constant. This is the first exact algorithm for L(2,1)-labeling problem with time complexity $O(c^n)$ for some constant $c$ and polynomial space complexity.
Graviton 1-loop partition function for 3-dimensional massive gravity
Creators: name: Gaberdiel, M. R.
name: Grumiller, D.
name: Vassilevich, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The graviton 1-loop partition function in Euclidean topologically massive gravity (TMG) is calculated using heat kernel techniques. The partition function does not factorize holomorphically, and at the chiral point it has the structure expected from a logarithmic conformal field theory. This gives strong evidence for the proposal that the dual conformal field theory to TMG at the chiral point is indeed logarithmic. We also generalize our results to new massive gravity.
description: 19 pages, v2: major revision, considerably stronger conclusions, added comparison with LCFT partition function, confirmation of LCFT conjecture, added author
Papers in Southeast Asian Linguistics No. 12: Thai sentence particles and other topics
Creators: name: Cooke, J. (Ed.)
Publisher: name: Pacific Linguistics
Year: 1989

description: A-80
description: Contents iiiIntroduction v{JOSEPH R. COOKE} 1Thai sentence particles: forms, meanings and formal-semantic variations{JOSEPH R. COOKE} 91Forms and meanings of the Thai particle si{JOSEPH R. COOKE} 123Forms and meanings of the Thai particle ná{JOSEPH R. COOKE} 159The problem of the sixth tone in Thai{JOSEPH R. COOKE} 169Thai nasalised vowelsPersonal bibliography 175
O "Eu", onde estaria? In: NASCIMENTO NETO, José Osório do; RIBEIRO, Nonie; CANDIOTTO, Lucimara Bortoleto. (Orgs.). Tecnologia e inovação: limites e possibilidades do metaverso para a pesquisa, extensão e internacionalização. Anais do Seminário de Pesquisa, extensão e internacionalização. (Regional Centro Sul – SEPESQ e Jornada de Iniciação Cientifica Estácio)
Creators: name: PIRES, Adriana Cristina Vieira
name: IANCOSKI; Jessica Mara Dos Santos
name: SANTOS, José Alaor Lara dos
Publisher: name: Zenodo
Year: 2023

description: PIRES, Adriana Cristina Vieira; IANCOSKI; Jessica Mara dos Santos; SANTOS, José Alaor Lara dos. O “Eu”, onde estaria? In: NASCIMENTO NETO, José Osório do; RIBEIRO, Nonie; CANDIOTTO, Lucimara Bortoleto. (Orgs.). Tecnologia e inovação: limites e possibilidades do metaverso para a pesquisa, extensão e internacionalização. Anais do Seminário de Pesquisa, extensão e internacionalização. (Regional Centro Sul – SEPESQ e Jornada de Iniciação Cientifica Estácio). 1.ed. Curitiba: GRD, 2023. ISBN: 978-65-997628-5-7 FATEC | ISBN: 978-65-997628-4-0 ESTÁCIO | DOI: 10.5281/zenodo.7916688 DOI: 10.5281/zenodo.7916688
High purity semi-insulating 4H-SiC epitaxial layers by Defect-Competition Epitaxy
Creators: name: Chandrashekhar, MVS
name: Chowdhury, Iftekhar
name: Kaminski, P.
name: Kozlowski, R.
name: Klein, P. B.
name: Sudarshan, Tangali
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Thick, high-purity semi-insulating (SI)homoepitaxial layers on Si-face 4H-SiC weregrownsystematically, with resistivity \geq 109Ω-cmby maintaining high C/Si ratios 1.3-15 during growth.Comparison of secondary ion mass spectra betweenlow-dopedepilayers grown at C/Si ratio<1.3andSI-epilayers grown at C/Si ratio>1.3 showed little difference in residual impurity concentrations. A reconciliation of impurity concentration with measured resistivity indicated a compensating trap concentration of ~1015cm-3present only in the SI-epilayers. High- resolution photo induced transient spectroscopy (HRPITS) identified themas Si-vacancy related deep centers, with no detectable EH6/7 and Z1/2levels. Recombination lifetimes ~5ns suggest application in fast-switching power devices.
description: Submitted to Applied Physics Letters
title: Biochemical Regulation of the Tim-3-Galectin-9 Immunosuppressive Pathway under Normal Conditions and upon Cell Malignant Transformation
Creators: name: Selnø, Anette Teo Hansen
Publisher: name: University of Kent
Year: 2021

description: Cancer is a group of diseases involving abnormal cell proliferation with a high potential to spread or invade into other parts of the body and is currently considered as one of the leading causes of death worldwide. Cancer cells can be recognised and killed by cytotoxic immune cells of lymphoid lineage. However, malignant cells are capable of suppressing the host's cytotoxic immune responses using a variety of biochemical mechanisms. One of the critical and poorly understood mechanisms of immune evasion is the Tim-3 (T cell immunoglobulin and mucin domain containing protein 3)-galectin-9 immunosuppressive pathway. Galectin-9, a protein highly conserved through evolution, is used to suppress anti-cancer activities of cytotoxic lymphoid cells. It has recently been reported that acute myeloid leukaemia (AML) cells are able to promote galectin-9 and Tim-3 translation and secretion through stimulation induced by fibronectin leucine-rich transmembrane protein 3 (FLRT3), which activates transmembrane receptor latrophilin-1 (LPHN1). LPHN1 mediates activation of Tim-3 and galectin-9 translation and facilitates their exocytosis. However, the molecular mechanisms underlying biochemical regulation of galectin-9 expression and control of the pathway activity remain unknown. Thus, uncovering this crucial biochemical machinery was the aim of this PhD programme. First of all, our group discovered that the Tim-3-galectin-9 pathway is active in a variety of human solid tumours and is also used to suppress the activities of cytotoxic lymphoid cells. We found that transforming growth factor beta 1 (TGF-β) is crucial for upregulation of galectin-9 expression in human cancer but not in non-malignant human cells. The transcription factors hypoxia-inducible factor 1 (HIF-1) and activator protein 1 (AP-1) were found to upregulate TGF-β expression, leading to activation of the transcription factor Smad3 through autocrine action. Smad3 was found to be responsible for TGF-β-mediated upregulation of galectin-9 expression. As a follow-up, we have discovered that high-mobility group box 1 (HMGB1, a nuclear protein secreted by stressed, damaged or dying cells and thus highly present in the tumour microenvironment) upregulates TGF- β production through the innate immune receptor called Toll-like receptor 4 (TLR4). Thus, HMGB1 can lead to induction of galectin-9 expression in cancer cells directly (if they express functional TLR4) or indirectly through TLR4 expressing myeloid cells present in the tumour microenvironment. Collectively, our results suggest that Tim-3-galectin-9 and TGF-β-dependent signalling pathways are potential targets for the immunotherapy of a large number of human cancers.
Using item response tree models for studying response behaviors
Creators: name: Park, Minjeong
Publisher: name: University of British Columbia
Year: 2021

description: In psychological and educational testing, test-takers’ response behaviors are a critical issue because they have significant impacts on the measurement of the trait and ability. The item response tree (IRTree) model is recently introduced as a promising tool for studying response behaviors. In this dissertation, I focused on the explanatory IRTree model that allows the researchers to include person and item characteristic variables to “explain” response behaviors. Although the explanatory IRTree model provides a useful way to address various queries about response behaviors, it has not gained much attention in the literature. Thus, the goal of this dissertation is to draw researchers’ attention to the potential of the explanatory IRTree model. To do so, I first introduced the IRTree model within an explanatory item response modeling framework. Taking this framework, I explicated how the standard IRTree model (a.k.a., descriptive IRTree model) can be easily extended to the explanatory IRTree model. Following that, I showcased two real-data applications. Study-1 used both the descriptive and explanatory IRTree models to inspect the response styles when answering the Rosenberg’s Self-esteem Scale. As the main findings, this study found the presence of two distinct extreme response styles and the acquiescence response style. Study-2 used the explanatory IRTree model to investigate the effects of person and item characteristics on nonresponse behaviors (not-reached and omitted) when taking the reading test of the Progress in International Reading Literacy Study. The findings showed that item nonresponse behaviors occurred differently depending on gender, test language, item location, and item format. There are three unique contributions of this dissertation. First, it expanded the utility of the IRTree model to be a tool for “explaining” response behaviors. Second, it provided an in-depth understanding of response styles in Likert-type psychological rating scales and nonresponse behaviors in educational testing. Finally, the method and findings of the two studies offered practical implications on the test/scale development and validation.
Hyperplane Arrangements: Computations and Conjectures
Creators: name: Schenck, Hal
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 52C35, Secondary 13D02, 16E05, 16S37, 20F14

description: This paper provides an overview of selected results and open problems in the theory of hyperplane arrangements, with an emphasis on computations and examples. We give an introduction to many of the essential tools used in the area, such as Koszul and Lie algebra methods, homological techniques, and the Bernstein-Gelfand-Gelfand correspondence, all illustrated with concrete calculations. We also explore connections of arrangements to other areas, such as De Concini-Procesi wonderful models, the Feichtner-Yuzvinsky algebra of an atomic lattice, fatpoints and blowups of projective space, and plane curve singularities.
description: 35 pages, 11 figures v2 references updated
title: CÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¾Ð¼ Ð½Ð° Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½Ð¾Ð¼ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¸ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÑÑÐ³Ð°Ð½ÑÐºÐ¸Ð¹ ÐºÐ°Ð±ÐµÐ»ÑÐ½ÑÐ¹ Ð·Ð°Ð²Ð¾Ð´Â»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The commission of the personnel management system at an industrial enterprise on the example LLC "Kurgan cable plantÂ»
Creators: name: ÐÐ°Ð³Ð¸Ð½, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»
ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¾Ð¼
Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¾Ð¼ ÐÐÐ Â«ÐÑÑÐ³Ð°Ð½ÑÐºÐ¸Ð¹ ÐºÐ°Ð±ÐµÐ»ÑÐ½ÑÐ¹ Ð·Ð°Ð²Ð¾Ð´Â»
Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ðµ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ ÑÐ°Ð±Ð¾ÑÐ¸Ñ
Ð½Ð¾ÑÐ¼Ð¾ÑÐ°ÑÑ
Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ðµ Ð¼Ð¾Ð»Ð¾Ð´ÑÑ ÐºÐ°Ð´ÑÐ¾Ð²
investments
investment project
analysis of the financial condition of the company JSC "Kurgan cable plant"
net present value
payback period
internal rate of return
additive technologies

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐÐÐ Â«ÐÑÑÐ³Ð°Ð½ÑÐºÐ¸Ð¹ ÐºÐ°Ð±ÐµÐ»ÑÐ½ÑÐ¹ Ð·Ð°Ð²Ð¾Ð´Â». Ð ÑÐ¾Ð´Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾Ð±Ð·Ð¾ÑÐ° Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ° Ð±ÑÐ»Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð°ÑÐ¿ÐµÐºÑÑ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¾Ð¼ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ°Ð´ÑÐ¾Ð².
Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð° Ð¸ ÐµÐ³Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ. ÐÐ· ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð³ÑÑÐ¿Ð¿ Ð»ÑÐ´ÐµÐ¹ Ð±ÑÐ»Ð¾ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¾ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð° Ð¿Ð¾ Ð²Ð¾Ð·ÑÐ°ÑÑÐ½ÑÐ¼ Ð¸ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¼ ÐºÑÐ¸ÑÐµÑÐ¸Ñ Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÑÐ½ ÑÐ°ÑÑÑÑ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ. Ð ÑÐ²ÑÐ·Ð¸ Ñ Ð¿ÐµÑÐµÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð° Ð±ÑÐ»Ð¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¼ÐµÑÐ¾Ð´Ñ Ð¿Ð¾ Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ñ Ð¸ ÑÐ´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Ð½ÑÐ¶Ð½ÑÑ ÐºÐ°Ð´ÑÐ¾Ð².
description: The object of research is JSC "Kurgan cable plant". During the theoretical review of the bachelor's final qualifying work
During the theoretical review of the bachelor's final qualifying work the main aspects of personnel management efficiency and optimization of personnel were considered. In the course of performance of final qualifying work the quantitative analysis of personnel and its productivity was carried out. From the comparison of performance indicators of different groups of people, it was proposed to change the staff by age and qualification criteria and the calculation of enterprise productivity. In connection with the reallocation of staff, methods were proposed to attract and retain the right staff.
Looking close at FU Orionis' disk in the mid-infrared with MATISSE/VLTI
Creators: name: Lykou, Foteini
name: Ábrahám, Peter
name: Chen, Lei
name: Varga, József
name: Kóspál, Ágnes
name: Siwak, Michal
name: Szabó, Zsófia M.
Publisher: name: Zenodo
Year: 2021

description: FU Orionis is the archetype of a class of YSOs (FUors) that have experienced eruptive events due to increased mass accretion (as high as \(10^{-4}\) Msun/yr) flowing from the circumstellar disk onto the protostar. The inner accretion disk is subsequently heated by these eruptions, leading to short-period brightenings (ΔB~6 mag in FU Ori within one year) with long-term fading rates. The FUors group consists currently of more than 20 stars, while it is yet unclear whether they constitute a typical step in early stellar evolution. FUors are ideal laboratories in studying the evolution of disks within a few years after an eruptive event. As the archetype, FU Orionis's disk is a well-studied object. Recently, near-infrared scattered light images (Laws et al. 2020) suggest that the size of the disk is \(\leq0.3\)", or else its radius is about 60 au at the adopted Gaia EDR3 distance (402.3 pc). Moreover, those images revealed a spiral-like arc, while previous ALMA sub-mm observations (Perez et al. 2020) tentatively suggested a link between a rotating disk and the arc feature. Motivated by these results, we opted to look at disk structures in L and N bands with MATISSE, the new mid-infrared, imaging instrument of the VLTI.
Assessment of antiviral activity and mechanism of rhein on newcastle disease virus (La Sota strain IV) in vitro
Creators: name: Hu, Yanchun
name: Okyere, Samuel Kumi
name: Xu, Ruiguang
name: Peng, Guangneng
name: Ren, Zhihua
name: Deng, Junliang
name: Jia, Yan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Current research is focused on the development of drug candidates from natural products. Rhein a Traditional Chinese Medicine (TCM) from Polygonaceae (rhubarb) has exhibited antioxidant, anti-inflammatory and anticancer activities, however no work has reported its antiviral potential, thus this study was performed to investigate the antiviral activities of rhein on new castle disease virus (NDV) in vitro. NDV infection of chicken embryo fibroblasts (CEFs) was prepared using 10-day-old specific pathogen free chicken embryos. Cytotoxicity and anti-viral activities of rhein were assessed using the MTT method. The interaction between NDV and cell membrane proteins were also detected using virus overlay protein binding assay (VOPBA). In addition NDV genes expressions in CEFs were measured using real-time fluorescent quantitative (RTFQ) PCR. The results showed that rhein effectively inhibit NDV activities maximal safe concentration of 0.125 mg/ml. This finding indicated that, rhein could be used as future antiviral drug against NDV.
Enhanced Peculiar Velocities in Brane-Induced Gravity
Creators: name: Wyman, Mark
name: Khoury, Justin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The mounting evidence for anomalously large peculiar velocities in our Universe presents a challenge for the LCDM paradigm. The recent estimates of the large scale bulk flow by Watkins et al. are inconsistent at the nearly 3 sigma level with LCDM predictions. Meanwhile, Lee and Komatsu have recently estimated that the occurrence of high-velocity merging systems such as the Bullet Cluster (1E0657-57) is unlikely at a 6.5-5.8 sigma level, with an estimated probability between 3.3x10^{-11} and 3.6x10^{-9} in LCDM cosmology. We show that these anomalies are alleviated in a broad class of infrared-modifed gravity theories, called brane-induced gravity, in which gravity becomes higher-dimensional at ultra large distances. These theories include additional scalar forces that enhance gravitational attraction and therefore speed up structure formation at late times and on sufficiently large scales. The peculiar velocities are enhanced by 24-34% compared to standard gravity, with the maximal enhancement nearly consistent at the 2 sigma level with bulk flow observations. The occurrence of the Bullet Cluster in these theories is 10^4 times more probable than in LCDM cosmology.
description: 15 pages, 6 figures. v2: added references
Between salvage ethnography and transculturation: José María Arguedas and the politics of travelling theory
Creators: name: Arnedo-Gómez, M
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: Uncategorized

description: This essay examines a tendency to assume José María Arguedas’s reliance on the anthropological practice known as salvage ethnography, or urgent anthropology, in his approach to Peruvian indigenous cultures. The analysis draws upon Arguedas’s stated skepticism about the suitability of salvage ethnography for Latin America considering that its indigenous populations ingeniously absorbed western cultural elements into their Indian cultural systems in order to preserve them. This strategy of resistance, conceptualized by Ángel Rama through the term ‘mestizo cultural antibodies,’ became central to Arguedas’s discourse on Peruvian Indian culture with revolutionary results, including a prescience of the expansive effects that technology, capitalist commercialization, and mass media can have on folklore and popular culture. This dimension of his work overcomes the main critical shortcomings James Clifford identified in the practice of salvage ethnography, and it can even be seen as pre-empting central tenets of the so-called post-modern ethnography that this anthropologist advocated for from the 1980s onwards. Thus, the fact that several critics coincide in attributing the label of salvage ethnographer to Arguedas despite his ethnography’s dissonance with it seems to be another example of the dominance of universalizing discourses based on the presumed superiority of theories stemming from metropolitan academic centers.
Finite temperature Casimir effect in the presence of nonlinear dielectrics
Creators: name: Kheirandish, Fardin
name: Amooghorban, Ehsan
name: Soltani, Morteza
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Starting from a Lagrangian, electromagnetic field in the presence of a nonlinear dielectric medium is quantized using path-integral techniques and correlation functions of different fields are calculated. The susceptibilities of the nonlinear medium are obtained and their relation to coupling functions are determined. Finally, the Casimir energy and force in the presence of a nonlinear medium at finite temperature is calculated.
description: 16 pages, 0 figures
A coherent understanding of low-energy nuclear recoils in liquid xenon
Creators: name: Sorensen, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Liquid xenon detectors such as XENON10 and XENON100 obtain a significant fraction of their sensitivity to light (<10 GeV) particle dark matter by looking for nuclear recoils of only a few keV, just above the detector threshold. Yet in this energy regime a correct treatment of the detector threshold and resolution remains unclear. The energy dependence of the scintillation yield of liquid xenon for nuclear recoils also bears heavily on detector sensitivity, yet numerous measurements have not succeeded in obtaining concordant results. In this article we show that the ratio of detected ionization to scintillation can be leveraged to constrain the scintillation yield. We also present a rigorous treatment of liquid xenon detector threshold and energy resolution. Notably, the effective energy resolution differs significantly from a simple Poisson distribution. We conclude with a calculation of dark matter exclusion limits, and show that existing data from liquid xenon detectors strongly constrain recent interpretations of light dark matter.
description: 19 pages, 10 figures, minor revisions
Investigation of diazeniumdiolate formation by the fragin biosynthesis pathway in Burkholderia cenocepacia h111
Creators: name: Ho, Sui Man
Publisher: name: University of British Columbia
Year: 2024

description: Natural products containing nitrogen-nitrogen (N-N) bonds are often bioactive, such as those containing diazeniumdiolate groups. Due to the rarity of diazeniumdiolate groups in nature, their mechanisms of formation are poorly understood. Elucidation of the mechanisms employed for the biosynthesis of compounds containing N-N bonds can have applications in the fields of bioengineering and drug development. Fragin, an antimicrobial, and valdiazen, a quorum sensing signal, are two diazeniumdiolate compounds produced by the same gene cluster in Burkholderia cenocepacia H111. This thesis describes the biochemical and structural approaches I employed in the investigation of diazeniumdiolate formation in fragin and valdiazen. Nitrogen oxide species (NOx) have previously been implicated in the formation of diazeniumdiolates. Therefore, I performed chemical analyses of deletion mutants to probe for NOx production as well as to verify fragin and valdiazen production in B. cenocepacia H111. These in vivo studies revealed that a cupin protein, HamB, is non-essential and that NOx may be involved in fragin biosynthesis. Subsequent in vitro biochemical studies revealed that a diiron protein, HamA, releases NOx upon consumption of L-glutamic acid (GLU) with the assistance of HamB. Next, I performed stable isotope feeding studies with 15N-labelled substrates to elucidate the sources of nitrogen atoms in the diazeniumdiolate groups of fragin and valdiazen. These results revealed that the diazeniumdiolate group can be derived from L-valine and nitrite, which is consistent with previously proposed mechanisms. Finally, I performed structural studies of HamA to gain mechanistic insights. The X-ray crystal structure of HamA revealed a heme-oxygenase-like fold with characteristic secondary structure instability. Furthermore, analysis of the crystal structure of HamA in complex with GLU revealed that the α-amino group of GLU is proximal to the metal centre. This structural data could suggest a HamA mechanism of NOx release involving the α-amino group of GLU. Overall, this thesis has furthered our knowledge of N-N bond formation in nature. I demonstrate a route by which the diazeniumdiolate group may be formed in the fragin biosynthesis pathway, which utilizes nitrite as a precursor. I also report here the first NOx-releasing diiron enzyme, HamA, along with its crystal structure.
Disks And Proplyds In The Orion Nebula Cluster With ALMA Band 3 Observations
Creators: name: Ballering, Nicholas P.
Publisher: name: Zenodo
Year: 2021

description: Rich clusters are the typical sites of star and planet formation in the Galaxy, and the Orion Nebula Cluster (ONC) is the most readily observable rich cluster. We present recent ALMA Band 3 (3 mm) observations of the inner 1.5 x 1.5 arcminutes of the ONC at high sensitivity (~30 uJy) and spatial resolution (60 mas). At 3 mm, we are sensitive to both dust thermal emission and free-free emission from ionized gas. We detect many sources, including compact protoplanetary disks and extended emission from proplyds—disks in the process of being photoevaporated by the external radiation field. We analyze these sources in conjunction with previous measurements at 850 um (from ALMA) and cm wavelengths (from the VLA) to spectrally and spatially decompose the dust versus free-free emission. We measure the disk sizes, dust masses, and dust properties (via the spectral index) and compare the results with disks in low-mass star forming regions to further our understanding of planet formation in a high-radiation cluster environment.