cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
LDPTrace: Locally Differentially Private Trajectory Synthesis.
Creators: name: Du, Yuntao
name: Hu, Yujia
name: Zhang, Zhikun
name: Fang, Ziquan
name: Chen, Lu
name: Zheng, Baihua
name: Gao, Yunjun
Publisher: name: CISPA
Year: 2024

description: Trajectory data has the potential to greatly benefit a wide-range of real-world applications, such as tracking the spread of the disease through people's movement patterns and providing personalized location-based services based on travel preference. However, privay concerns and data protection regulations have limited the extent to which this data is shared and utilized. To overcome this challenge, local differential privacy provides a solution by allowing people to share a perturbed version of their data, ensuring privacy as only the data owners have access to the original information. Despite its potential, existing point-based perturbation mechanisms are not suitable for real-world scenarios due to poor utility, dependence on external knowledge, high computational overhead, and vulnerability to attacks. To address these limitations, we introduce LDPTrace, a novel locally differentially private trajectory synthesis framework. Our framework takes into account three crucial patterns inferred from users' trajectories in the local setting, allowing us to synthesize trajectories that closely resemble real ones with minimal computational cost. Additionally, we present a new method for selecting a proper grid granularity without compromising privacy. Our extensive experiments using real-world data, various utility metrics and attacks, demonstrate the efficacy and efficiency of LDPTrace.
The turbulence boundary of a temporal jet
Creators: name: van Reeuwijk, Maarten
name: Holzner, Markus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We examine the structure of the turbulence boundary of a temporal plane jet at $Re=5000$ using statistics conditioned on the enstrophy. The data is obtained by direct numerical simulation and threshold values span 24 orders of magnitude, ranging from essentially irrotational fluid outside the jet to fully turbulent fluid in the jet core. We use two independent estimators for the local entrainment velocity $v_n$ based on the enstrophy budget. The data show clear evidence for the existence of a viscous superlayer (VSL) that envelopes the turbulence. The VSL is a nearly one-dimensional layer with low surface curvature. We find that both its area and viscous transport velocity adjust to the imposed rate so that the integral entrainment flux is independent of threshold, although low-Reynolds-number effects play a role for the case under consideration. This threshold independence is consistent with the inviscid nature of the integral rate of entrainment. A theoretical model of the VSL is developed that is in reasonably good agreement with the data and predicts that the contribution of viscous transport and dissipation to interface propagation have magnitude $2 v_n$ and $-v_n$, respectively. We further identify a turbulent core region (TC) which is a region that shrinks over time and a buffer region connecting the VSL and the TC that grows in time and where the inviscid enstrophy production is important. The BR shows many similarities with the turbulent-nonturbulent interface (TNTI), although the TNTI seems to extend into the TC. The average distance between the TC and the VSL, i.e.\ the BR thickness is about 10 Kolmogorov length scales or half a Taylor length scale, indicating that intense turbulent flow regions and viscosity-dominated regions are in close proximity.
title: Sprache und kulturelle Bildung
title: Perspektiven für eine reflexive Lehrerinnen- und Lehrerbildung und einen heterogenitätssensiblen Unterricht
titleType: Subtitle
Creators: name: Beuter, Katharina
name: Hlukhovych, Adrianna
name: Bauer, Benjamin
name: Lindner, Konstantin
Publisher: name: University of Bamberg Press
Year: 2019

description: Forum Lehrerinnen- und Lehrerbildung (FLB) = Forum Erziehungswissenschaft und Bildungspraxis; 9
A Link Loss Model for the On-body Propagation Channel for Binaural Hearing Aids
Creators: name: Chandra, Rohit
name: Johansson, Anders J
Publisher: name: arXiv
Year: 2013
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Binaural hearing aids communicate with each other through a wireless link for synchronization. A propagation model is needed to estimate the ear-to-ear link loss for such binaural hearing aids. The link loss is a critical parameter in a link budget to decide the sensitivity of the transceiver. In this paper, we have presented a model for the deterministic component of the ear-to-ear link loss. The model takes into account the dominant paths having most of the power of the creeping wave from the transceiver in one ear to the transceiver in other ear and the effect of the protruding part of the outer ear called pinna. Simulations are done to validate the model using in-the-ear (ITE) placement of antennas at 2.45 GHz on two heterogeneous phantoms of different age-group and body size. The model agrees with the simulations. The ear-to-ear link loss between the antennas for the binaural hearing aids in the homogeneous SAM phantom is compared with a heterogeneous phantom. It is found that the absence of the pinna and the lossless shell in the SAM phantom underestimate the link loss. This is verified by the measurements on a phantom where we have included the pinnas fabricated by 3D-printing.
title: Οπτικό φασματόμετρο βασισμένο σε γραμμικά μεταβαλλόμενο φίλτρο συμβολής
Creators: name: Ευαγγελάτου Δέσποινα
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
Synthesis, characterization, antioxidant properties and DFT calculation of some new pyrimidine derivatives
Creators: name: Akbas, Esvet
name: Ergan, Erdem
name: Sahin, Ertan
name: Ekin, Suat
name: Cakir, Metin
name: Karakus, Yagmur
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: In this study, 5-benzoyl-4-(4-(methylthio)phenyl)-6-phenyl-1,2,3,4-tetrahydro-2-thioxo (1), oxo (2) and imino (3) pyrimidine derivatives were prepared via Multicomponent Cyclocondensation Reactions (MCRs). The compounds thiazolo[3,2-a]pyrimidin-3(5H)-one (4) and thiazin-4(6H)-one (5) were obtained via the reaction of compound 1 with bromoacetic acid and 3-bromopropionic acid, respectively. Structures were determined by using FT-IR, 1H/13C NMR and elemental analyses. Also the compounds 4 and 5 were analyzed by X-ray single crystal analysis. All compounds were investigated as corrosion inhibitors using density functional theory (DFT) at the level of B3LYP/6-31G (d, p). According to the calculations, the compound 3 appears to be a good inhibitor for corrosion. On the other hand, total antioxidant properties were measured in vitro by DPPH•, ABTS•+ test, hemolysis of phenylhydrazine erythrocytes and metal chelating effect. The results were compared with standard antioxidants such as trolox and α-tocopherol. These data revealed that compounds 1, 2 and 5 are more active with respect to 3 and 4 in scavenging the radicals.
The Dark Energy Cosmic Clock: A New Way to Parametrise the Equation of State
Creators: name: Tarrant, Ewan R. M.
name: Copeland, Edmund J.
name: Padilla, Antonio
name: Skordis, Constantinos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a completely new parametrisation of the dark energy equation of state, which uses the dark energy density, $Ω_e$ as a cosmic clock. We expand the equation of state in a series of orthogonal polynomials, with $Ω_e$ as the expansion parameter and determine the expansion coefficients by fitting to SNIa and $H(z)$ data. Assuming that $Ω_e$ is a monotonic function of time, we show that our parametrisation performs better than the popular Chevallier--Polarski--Linder (CPL) and Gerke and Efstathiou (GE) parametrisations, and we demonstrate that it is robust to the choice of prior. Expanding in orthogonal polynomials allows us to relate models of dark energy directly to our parametrisation, which we illustrate by placing constraints on the expansion coefficients extracted from two popular quintessence models. Finally, we comment on how this parametrisation could be modified to accommodate high redshift data, where any non--monotonicity of $Ω_e$ would need to be accounted for.
description: 12 pages, 5 figures. Matches Published Version
title: "Λεύκα: Τα τρένα που μένουν" - Αστικές επεμβάσεις σε ένα ενεργό μηχανουργείο
Creators: name: Γεωργιου Χρυσουλα
Publisher: name: Technical University of Crete
Year: 2017

description: Στην  περιοχή "Λεύκα", του Πειραιά, βρίσκεται το μηχανοστάσιο- εργοστάσιο του ΟΣΕ από το 1884. Μία περίκλειστη έκταση στην οποία τα τρένα "μένουν" για να γίνουν όλες οι απαραίτητες επισκευές, επιλέγεται ώστε να βρεθούν τρόποι επικοινωνίας με τον περιβάλλοντα κόσμο. Στην παρούσα μελέτη "οργανώνεται το κενό" διαμορφώνοντας νέα και επιμέρους συστήματα- σχέσεις.
Στοίχημα όταν καλείσαι να διαχειριστείς τον κενό χώρο είναι να προσπαθήσεις να μην τον γεμίσεις. Ειδικά όταν η επιλεγμένη περιοχή αποτελείται από δυναμικά "τοπία" διαφορετικού χαρακτήρα και στην καρδιά της φιλοξενεί ένα εργοστάσιο (μηχανουργείο) εν ενεργεία.  Στόχος είναι να διαμορφωθούν αφηγήσεις ώστε η καθημερινότητα να μπορέσει να συνομιλήσει με ένα βιομηχανικό τοπίο.
Identification of Background False Positives from Kepler Data
Creators: name: Bryson, Stephen T.
name: Jenkins, Jon M.
name: Gilliland, Ronald L.
name: Twicken, Joseph D.
name: Clarke, Bruce
name: Rowe, Jason
name: Caldwell, Douglas
name: Batalha, Natalie
name: Mullally, Fergal
name: Haas, Michael R.
name: Tenenbaum, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for Earth-size planets with the transit technique. The reliability of the resulting planetary candidate list relies on the ability to identify and remove false positives. Major sources of astrophysical false positives are planetary transits and stellar eclipses on background stars. We describe several new techniques for the identification of background transit sources that are separated from their target stars, indicating an astrophysical false positive. These techniques use only Kepler photometric data. We describe the concepts and construction of these techniques in detail as well as their performance and relative merits.
description: 72 pages, 38 figures. To appear in PASP
Formation of diaryl sulfides and sulfoxides: Synthesis, characterization and structure activity correlation studies
Creators: name: Lamani, Devappa S.
name: Badiger, Srikant G.
name: Singh, Mamata
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology
subject: Computational Biology

description: The synthesis of a series of stable diarylsulfides and sulfoxides is reported. All the newly synthesized compounds were characterized by 1H, 13C NMR and mass spectroscopic techniques. A detailed mechanistic study indicates that the formation of sulfoxides follows the oxidation. In addition to synthesis, characterization and mechanistic studies, the glutathione peroxidase(GPx) mimetic activity of the newly synthesized compounds is described. It is observed that the diaryl sulfides having a heterocyclic ring attached to the nitrogen atom facilitates the oxidation of the sulfur center to form the corresponding sulfoxides. The substituents attached to the nitrogen atom play an important role in the catalytic activity of the substituted diaryl sulfides. The obtained data supports for the higher antioxidant activity of diaryl sulfides than that of the corresponding sulfoxides.
Carnot Cycle at Finite Power: Attainability of Maximal Efficiency
Creators: name: Allahverdyan, Armen E.
name: Hovhannisyan, Karen V.
name: Melkikh, Alexey V.
name: Gevorkian, Sasun G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We want to understand whether and to which extent the maximal (Carnot) efficiency for heat engines can be reached at a finite power. To this end we generalize the Carnot cycle so that it is not restricted to slow processes. We show that for realistic (i.e. not purposefully-designed) engine-bath interactions, the work-optimal engine performing the generalized cycle close to the maximal efficiency has a long cycle time and hence vanishing power. This aspect is shown to relate to the theory of computational complexity. A physical manifestation of the same effect is the Levinthal's paradox in the protein folding problem. The resolution of this paradox for realistic proteins allows to construct engines that can extract at a finite power 40% of the maximally possible work reaching 90% of the maximal efficiency. For purposefully designed engine-bath interactions, the Carnot efficiency is achievable at a large power.
description: 12 pages, 2 figures, 2 tables. The published version
Ceric ammonium nitrate (CAN) catalyzed synthesis and α-glucosidase activity of some novel tetrahydropyridine phosphonate derivatives
Creators: name: Reddy, Kandula Madhu Kumar
name: Peddanna, Kotha
name: Varalakshmi, Mavallur
name: Reddy, Nemallapudi Bakthavatchala
name: Sravya, Gundala
name: Zyryanov, Grigory V.
name: Reddy, Cirandur Suresh
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
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: 60506 Virology
subject: FOS: Biological sciences

description: A simple and highly efficient multicomponent one-pot synthesis of a series of pharmaceutically interesting functionalized tetrahydropyridine phosphonate derivatives has been developed based on low-cost and environmentally benign ceric ammonium nitrate (CAN) catalyst via tandem reactions of 1,3-dicarbonyl compounds, diethylphosphoramidate and various aromatic aldehydes in acetonitrile at room temperature. High atom economy, good yields, eco-friendliness and mild reaction conditions are some of the important features of this protocol.
Superconductivity under pressure in $R$FeAsO$_{\rm 1-x}$F$_{\rm x}$ ($R$=La, Ce$-$Sm) by dc magnetization measurements
Creators: name: Miyoshi, Kiyotaka
name: Kojima, Eiko
name: Ogawa, Saki
name: Shimojo, Yuta
name: Takeuchi, Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting transition under pressure ($P$) has been investigated for optimum-doped $R$FeAsO$_{\rm 1-x}$F$_{\rm x}$ ($R$=La, Ce$-$Sm) by dc magnetization measurements. For $R$=La, $T_{\rm c}$ is found to be pressure independent up to $P$$\sim$3.0 GPa and then shows a monotonic decrease with increasing pressure. The plateau width decreases for the system with smaller lattice constants, and shrinks to almost zero for $R$=Sm. From the $T_{\rm c}$($P$) data, we construct the $T_{\rm c}$ evolution map on the height of the As atom from the Fe-plane $h_{\rm As}$ versus lattice constant $a$ or $c$ plane. It is shown that the characteristic $T_{\rm c}$ variations under pressure for all compounds and the rapid decrease in $T_{\rm c}$ induced by changing $R$-element from Sm to La can be described by a common $T_{\rm c}$($h_{\rm As}$, $a$ or $c$) surface, suggesting that $T_{\rm c}$ is determined by $h_{\rm As}$ and lattice constant. It is also suggested that there exists an upper limit of the lattice constant $a_{\rm ulm}$ (or $c_{\rm ulm}$), above which $dT_{\rm c}$$da$ (or $dT_{\rm c}$$dc$) changes the sign from positive to negative.
description: 7 pages, 6 figures
Quark scattering off quarks and hadrons
Creators: name: Friesen, A. V
name: Kalinovsky, Yu. V.
name: Toneev, V. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The in-medium elastic scattering $qq\to qq, q\bar{q}\to q\bar{q}$ and $\bar{q}\bar{q}\to \bar{q}\bar{q}$ is calculated within the two-flavor Polyakov-loop-extended Nambu-Jona-Lasinio model. The integral and differential quark-quark scattering, its energy and temperature dependence are considered and their flavor dependence is emphasized. The comparison with results of other approaches is presented. The consideration is implemented to the case of quark-pion scattering characterizing the interaction between quarks and hadrons in a kinetic multiphase treatment, and the first estimate of the quark-pion cross sections is given. A possible application of the obtained results to heavy ion collisions is shortly discussed.
description: 21 pages, 11 figures, 2 tables
Properties of type Ia supernovae inside rich galaxy clusters
Creators: name: Xavier, Henrique S.
name: Gupta, Ravi R.
name: Sako, Masao
name: D'Andrea, Chris B.
name: Frieman, Joshua A.
name: Galbany, Lluis
name: Garnavich, Peter M.
name: Marriner, John
name: Nichol, Robert C.
name: Olmstead, Matthew D.
name: Schneider, Donald P.
name: Smith, Mathew
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We used the GMBCG galaxy cluster catalogue and SDSS-II supernovae data with redshifts measured by the BOSS project to identify 48 SNe Ia residing in rich galaxy clusters and compare their properties with 1015 SNe Ia in the field. Their light curves were parametrised by the SALT2 model and the significance of the observed differences was assessed by a resampling technique. To test our samples and methods, we first looked for known differences between SNe Ia residing in active and passive galaxies. We confirm that passive galaxies host SNe Ia with smaller stretch, weaker colour-luminosity relation [$β$ of 2.54(22) against 3.35(14)], and that are $\sim$ 0.1 mag more luminous after stretch and colour corrections. We show that only 0.02 per cent of random samples drawn from our set of SNe Ia in active galaxies can reach these values. Reported differences in the Hubble residuals scatter could not be detected, possibly due to the exclusion of outliers. We then show that, while most field and cluster SNe Ia properties are compatible at the current level, their stretch distributions are different ($\sim3σ$): besides having a higher concentration of passive galaxies than the field, the cluster's passive galaxies host SNe Ia with an average stretch even smaller than those in field passive galaxies (at 95 per cent confidence). We argue that the older age of passive galaxies in clusters is responsible for this effect since, as we show, old passive galaxies host SNe Ia with smaller stretch than young passive galaxies ($\sim4σ$).
description: 18 pages, 16 figures. Version with minor changes accepted for publication
Black Hole Formation at the Correspondence Point
Creators: name: Iizuka, Norihiro
name: Kabat, Daniel
name: Roy, Shubho
name: Sarkar, Debajyoti
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the process of bound state formation in a D-brane collision. We consider two mechanisms for bound state formation. The first, operative at weak coupling in the worldvolume gauge theory, is pair creation of W-bosons. The second, operative at strong coupling, corresponds to formation of a large black hole in the dual supergravity. These two processes agree qualitatively at intermediate coupling, in accord with the correspondence principle of Horowitz and Polchinski. We show that the size of the bound state and timescale for formation of a bound state agree at the correspondence point. The timescale involves matching a parametric resonance in the gauge theory to a quasinormal mode in supergravity.
description: 29 pages, 5 figures. v2: minor improvements, additional reference, version to appear in PRD
Ketene dithioacetal mediated synthesis of 1,3,4,5-tetrasubstituted pyrazole derivatives and their biological evaluation
Creators: name: Bhale, Pravin S.
name: Bandgar, Babasaheb P.
name: Dongare, Sakharam B.
name: Shringare, Sadanand N.
name: Sirsat, Dnyaneshwar M.
name: Chavan, Hemant V.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Plant Biology
subject: FOS: Biological sciences
subject: 60506 Virology

description: Ketene dithioacetal mediated chemo- and regioselective synthesis of a series of novel 1,3,4,5-tetrasubstituted pyrazole derivatives (4a-l) integrated with a bioactive indole nucleus was achieved by reacting substituted 2-(1-methyl-1H-indole-3-carbonyl)-3,3-bis-(methylthio)-acrylonitrile (2) and substituted phenyl hydrazine hydrochloride (3) in the presence of a catalytic amount of anhydrous K2CO3 under reflux conditions. The structures were ascertained by 1H NMR, NOESY, 13C NMR, FT-IR, and HRMS data. In vitro cytotoxicity evaluation of the synthesized compounds against MCF 7 (breast carcinoma) and normal Vero (monkey kidney) cell lines revealed that the compound 5-(5-Bromo-1-methyl-1H-indol-3-yl)-1-(4-cyano-phenyl)-3-methylsulfanyl-1H-pyrazole-4-carbonitrile (4k) showed significant cytotoxicity against MCF 7 (GI50 = 15.6 µM) with low cytotoxicity against normal Vero cell line. Most of the synthesized compounds were also found to possess excellent anti-inflammatory and antioxidant (DPPH, NO, H2O2 and SOR) potential.
Synthesis and biological evaluation of 5-methyl-4-phenyl thiazole derivatives as anticancer agents
Creators: name: Evren, Asaf E.
name: Yurttas, Leyla
name: Ekselli, Büşra
name: Akalin-Ciftci, Gülşen
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Plant Biology

description: New N-(5-methyl-4-phenylthiazol-2-yl)-2-(substituted thio)acetamides were synthesized and studied for their anticancer activity. The title compounds were procured by reacting 2-chloro-N-(5-methyl-4-phenylthiazol-2-yl)acetamide with some mercapto derivatives. The structural elucidation of the compounds was performed by 1H-NMR, 13C-NMR and LC-MS/MS spectral data and elemental analyses. The synthesized compounds were investigated for their antitumor activities against A549 human lung adenocarcinoma cells and NIH/3T3 mouse embryoblast cell line for determining their selective cytotoxicity. 2-[(1-methyl-1H-tetrazol-5-yl)thio]-N-(5-methyl-4-phenylthiazol-2-yl)acetamide (4c) showed high selectivity, and whose IC50 value was determined as 23.30 ± 0.35 µM and >1000 µM against A549 human lung adenocarcinoma cells and NIH/3T3 mouse embryoblast cell lines, respectively. 2-[(1-Methyl-1H-imidazol-2-yl)thio]-N-(5-methyl-4-phenyl thiazol-2-yl)acetamide (4a) and 2-[(1-Methyl-1H-tetrazol-5-yl)thio]-N-(5-methyl-4-phenyl thiazol-2-yl)acetamide (4c) exhibited the highest apoptosis percentage among those tested, but not as high as the standard, cisplatin.
title: Новые сорта хризантемы мелкоцветковой
Creators: name: Селиверстова,  Екатерина Николаевна
name: Щегринец,  Наталья Викторовна
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: Цветоводство является отраслью растениеводства, занимающейся выращиванием красиво цветущих растений. Ассортимент пополняется за счет интродукции декоративных растений дикой флоры и выведением новых сортов. Селекция и семеноводство цветочных культур проводится в научных учреждениях и цветоводами-любителями. Это сложный и кропотливый процесс. Как результат многолетней работы – получение новых сортов. Хризантемы – многолетние, красивоцветущие, с ежегодно отмирающей надземной частью растения семейства Астровые (AsteraceaeDumort). Это одна их древнейших цветочных культур, которая не только не утратила своего значения в наши дни, но и занимает второе место в мировом производстве цветочной продукции. Некоторые виды хризантем культивируются только в ботанических садах. Сорта отечественной и зарубежной селекции не всегда устойчивы к засухе и болезням, поэтому вопрос создания сортов собственной селекции стал актуальным. Цель работы – создание новых сортов хризантемы мелкоцветковой, адаптированных к почвенно-климатическим условиям Ставропольской возвышенности. Селекционная работа с хризантемой мелкоцветковой в Ставропольском ботаническом саду ведется с 2006 года, когда от свободного опыления перспективных сортов в 2006–2008 гг. были получены семена хризантемы мелкоцветковой. Сеянцы стали исходным материалом для дальнейшей работы. В 2017 году получены патенты на сорта Пламя, Калейдоскоп, в 2018 году – на сорта Зефирка и Ириска. Они были включены в Государственный реестр селекционных достижений соответственно в 2017 и 2018 гг.
Parametric normal forms for Bogdanov--Takens singularity; the generalized saddle-node case
Creators: name: Gazor, Majid
name: Moazeni, Mojtaba
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34C20, 34A34, 16W5, 68U99

description: We obtain a parametric normal form for any non-degenerate perturbation of the generalized saddle-node case of Bogdanov--Takens singularity. Explicit formulas are derived and greatly simplified for an efficient implementation in any computer algebra system. A Maple program is prepared for an automatic parametric normal form computation. A section is devoted to present some practical formulas which avoid technical details of the paper.
title: СОРТА МНОГОЛЕТНИХ ТРАВ ДЛЯ СОЗДАНИЯ И УЛУЧШЕНИЯ СЕНОКОСОВ И ПАСТБИЩ В ЗАСУШЛИВЫХ ЗОНАХ ЮГА РОССИИ
Creators: name: КРАВЦОВ,  В.В.
name: КРАВЦОВ,  В.А.
name: КАПУСТИН , А.С.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: В кормовом балансе, наряду с другими кормовыми культурами, большую роль играют многолетние злаковые травы. Особого внимания заслуживают природные и культурные сенокосы и пастбища, которые занимают основные площади аридных зон Юга России. Сенокосы и пастбища являются основой кормовой базы животноводства. Для восстановления природно-ресурсного потенциала и повышения продуктивности аридных территорий Юга России необходимо иметь высокоурожайные, морозо-зимо-засухоустойчивые,солеустойчивые сорта многолетних кормовых трав. Житняк сибирский сорт Новатор солеустойчивый, морозо-зимо-засухоустойчивый. После скашивания и выпаса животными сорт Новатор быстро отрастает. Урожайность зеленой массы сорта Новатор – 32,8 т/га, сена – 9,5, семян – 0,8. Житняк гребневидный сорт Викрав обладает зимо-засухоустойчивостью. Хорошо растет на солончаковатых почвах. Он пастбищеустойчив, рано и быстро отрастает весной. Урожайность житняка гребневидного сорта Викрав, зеленой массы – 26,0 т/га, сена – 7,0, семян – 0,65. Пырей удлиненный сорт Ставропольский 10 и сорт Солончаковый озимого типа развития, обладает мощной, хорошо разветвленной мочковатой корневой системой. Урожайность зеленой массы сортов Ставропольский 10 и Солончаковый составляет 36,3 и 38,0 т/га, сена – 8,5 и 10,5 т/га, семян – 0,79 и 0,83 т/га соответственно. Житняк сибирский сорт Новатор, пырей удлиненный сорт Ставропольский 10 и сорт Солончаковый хорошо растут на песчаных почвах, засоленных, почвах вторичного засоления, на майкопских глинах, грунтах и выдерживают хлоридно-сульфатное засоление до 2 %.
Torus knots as Hopfions
Creators: name: Kobayashi, Michikazu
name: Nitta, Muneto
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a direct connection between torus knots and Hopfions by finding stable and static solutions of the extended Faddeev-Skyrme model with a ferromagnetic potential term. (P,Q)--torus knots consisting of |Q| sine-Gordon kink strings twisted P/Q times into the poloidal cycle along the toroidal cycle on a toroidal domain wall carry the Hopf charge PQ, which demonstrates that Hopfions can be further classified according to torus knot type.
description: 6 pages, 4 figures, v2: published version
title: НОВЫЙ СОРТ ПШЕНИЦЫ МЯГКОЙ ОЗИМОЙ СИЕСТА ДЛЯ  УСЛОВИЙ ЮГА РОССИИ
Creators: name: Ковтун, В.И.
name: Ковтун , Л.Н.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: В статье представлены основные методы создания новых сортов пшеницы мягкой озимой и результаты изучения нового сорта Сиеста в конкурсном испытании  Северо-Кавказского федерального научного аграрного центра. Указывается, что на ряду с классической селекцией, широко используется гаплоидная и маркерная селекция, с помощью которых селекционный процесс сокращается на 2-3 года. Даны морфологическое описание и характеристика нового сорта по важнейшим хозяйственно-ценным признакам и свойствам. Сорт Сиеста по урожайности зерна и элементам, слагающим ее в годы исследований (2015-2018) достоверно превысил стандартный сорт Гром. Прибавка зерна к стандарту в среднем за эти годы у него составила 1,47 т/га. Новый сорт обладает высокой зимоморозостойкостью, по качеству зерна достоверно превысил стандарт Гром, который внесен в список ценных пшениц Российской Федерации. Новый генотип характеризуется высокой устойчивостью к основным болезням и вирусам, которые поражают пшеницу мягкую озимую на юге и юго-востоке России. Он обладает высокой устойчивостью к полеганию, осыпанию и прорастанию зерна на корню.
Ceric ammonium nitrate (CAN) catalyzed synthesis and α-glucosidase activity of some novel tetrahydropyridine phosphonate derivatives
Creators: name: Madhu Kumar Reddy, Kandula
name: Peddanna, Kotha
name: Varalakshmi, Mavallur
name: Reddy, Nemallapudi Bakthavatchala
name: Sravya, Gundala
name: Zyryanov, Grigory V.
name: Reddy, Cirandur Suresh
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
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: 60506 Virology
subject: FOS: Biological sciences

description: A simple and highly efficient multicomponent one-pot synthesis of a series of pharmaceutically interesting functionalized tetrahydropyridine phosphonate derivatives has been developed based on low-cost and environmentally benign ceric ammonium nitrate (CAN) catalyst via tandem reactions of 1,3-dicarbonyl compounds, diethylphosphoramidate and various aromatic aldehydes in acetonitrile at room temperature. High atom economy, good yields, eco-friendliness and mild reaction conditions are some of the important features of this protocol.
title: Влияние биологически активной добавки из высушенных гусениц тутового шелкопряда на биохимические и репродуктивные показатели хряков
Creators: name: Евлагина,  Е.Г.
name: Нарижный,  А.Г.
name: Джамалдинов,  А.Ч.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: Качественно новые методы содержания и эксплуатации на индустриальных предприятиях отрицательно сказываются на физиологическом состоянии свиней, что приводит к ухудшению воспроизводительной функции хряков. В исследованиях изучалась эффективность скармливания хрякам кормовой добавки высушенных гусениц тутового шелкопряда на биохимические показатели крови, минерального обмена, половое поведение хряков и показатели их спермопродукции. Было отобрано 3 группы хряков-производителей крупной белой породы. За время опыта хряки 1-й контрольной группы получали только основной рацион (комбикорм К-57-2), а животные 2-й и 3-й опытных групп дополнительно к основному рациону в течение 40 сут получали добавку высушенных гусениц тутового шелкопряда в количестве 2,0 и 4,0 %,соответственно, по группам. Анализ показателей спермы хряков показал, что от хряков опытных групп получено в 1,5-1,8 раза больше спермодоз, при этом сперма имела высокие показатели резистентности и абсолютной выживаемости, что доказало высокую эффективность скармливания биологически активной добавки высушенных гусениц тутового шелкопряда хрякам-производителям. Лучшие показатели получены при использовании к основному рациону 4,0 % добавки из высушенных гусениц тутового шелкопряда.
Ketene dithioacetal mediated synthesis of 1,3,4,5-tetrasubstituted pyrazole derivatives and their biological evaluation
Creators: name: Bhale, Pravin S.
name: Bandgar, Babasaheb P.
name: Dongare, Sakharam B.
name: Shringare, Sadanand N.
name: Sirsat, Dnyaneshwar M.
name: V. Chavan, Hemant
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Plant Biology
subject: FOS: Biological sciences
subject: 60506 Virology

description: Ketene dithioacetal mediated chemo- and regioselective synthesis of a series of novel 1,3,4,5-tetrasubstituted pyrazole derivatives (4a-l) integrated with a bioactive indole nucleus was achieved by reacting substituted 2-(1-methyl-1H-indole-3-carbonyl)-3,3-bis-(methylthio)-acrylonitrile (2) and substituted phenyl hydrazine hydrochloride (3) in the presence of a catalytic amount of anhydrous K2CO3 under reflux conditions. The structures were ascertained by 1H NMR, NOESY, 13C NMR, FT-IR, and HRMS data. In vitro cytotoxicity evaluation of the synthesized compounds against MCF 7 (breast carcinoma) and normal Vero (monkey kidney) cell lines revealed that the compound 5-(5-Bromo-1-methyl-1H-indol-3-yl)-1-(4-cyano-phenyl)-3-methylsulfanyl-1H-pyrazole-4-carbonitrile (4k) showed significant cytotoxicity against MCF 7 (GI50 = 15.6 µM) with low cytotoxicity against normal Vero cell line. Most of the synthesized compounds were also found to possess excellent anti-inflammatory and antioxidant (DPPH, NO, H2O2 and SOR) potential.
title: Урожайность и элементы ее структуры у новых генотипов пшеницы мягкой озимой Северо-Кавказского ФНАЦ
Creators: name: Ковтун, В.И.
name: Ковтун, Л.Н.
name: Сухарева, А.А.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: В статье представлены лучшие по урожайности генотипы пшеницы мягкой озимой, созданные в последние годы в Северо-Кавказском ФНАЦ. По урожайности зерна в среднем за три года изучения (2016-2018) лучшие генотипы превысили стандартный сорт Гром от 1,31 до 1,85 т/га. Особенно высокое превышение над стандартом отмечалось по основным элементам структуры урожайности: масса 1000 зерен, число зерен в колосе, масса зерна колоса. Указывается, что  такие сортообразцы  как, Щит, Статус, Тайфун 7, Батя, 964/15, 1008/15, 1072/15 могут эффективно использоваться в качестве генетических источников при создании новых сортов пшеницы мягкой озимой для условий Российской Федерации.
Response of liquid xenon to Compton electrons down to 1.5 keV
Creators: name: Baudis, Laura
name: Dujmovic, Hrvoje
name: Geis, Christopher
name: James, Andreas
name: Kish, Alexander
name: Manalaysay, Aaron
name: Undagoitia, Teresa Marrodan
name: Schumann, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The response of liquid xenon to low-energy electronic recoils is relevant in the search for dark-matter candidates which interact predominantly with atomic electrons in the medium, such as axions or axion-like particles, as opposed to weakly interacting massive particles which are predicted to scatter with atomic nuclei. Recently, liquid-xenon scintillation light has been observed from electronic recoils down to 2.1 keV, but without applied electric fields that are used in most xenon dark matter searches. Applied electric fields can reduce the scintillation yield by hindering the electron-ion recombination process that produces most of the scintillation photons. We present new results of liquid xenon's scintillation emission in response to electronic recoils as low as 1.5 keV, with and without an applied electric field. At zero field, a reduced scintillation output per unit deposited energy is observed below 10 keV, dropping to nearly 40% of its value at higher energies. With an applied electric field of 450 V/cm, we observe a reduction of the scintillation output to about 75% relative to the value at zero field. We see no significant energy dependence of this value between 1.5 keV and 7.8 keV. With these results, we estimate the electronic-recoil energy thresholds of ZEPLIN-III, XENON10, XENON100, and XMASS to be 2.8 keV, 2.5 keV, 2.3 keV, and 1.1 keV, respectively, validating their excellent sensitivity to low-energy electronic recoils.
description: 14 pages, 10 figures. v2: Figure 8 updated, now including the NEST prediction for field quenching. v3: modified values of derived energy thresholds in the four DM experiments considered
Synthesis of thiiranylmethylamides from N(S)-allylthiooxamides
Creators: name: Aksinenko, Alexey Yu
name: Pushin, Alexey N.
name: Sokolov, Vladimir B.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The first representative of N1-substituted N2-thiiranylmethylethaneamides has been synthesized from N1-substituted N2-allylethaneamides. The formation of thiiranylmethylamides passes through bromine-induced cyclization of N-allylthioamide moiety followed by hydrolysis of 5-bromomethyl-1,3-thiazoline ring.
Radio Unnameable
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: Fass and a caller discuss idioms/cliches. "Dressed All in Pink" by Jerry Moore and Dudley Randall plays. Fass discusses a friend who had been scalping tickets to Bob Dylan's "Rolling Thunder Revue" concert at MSG. An unknown rock song plays. Callers read unknown poems
Cold gas in the inner regions of intermediate redshift clusters
Creators: name: Jablonka, P.
name: Combes, F.
name: Rines, K.
name: Finn, R.
name: Welch, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Determining gas content and star formation rate has known remarkable progress in field galaxies, but has been much less investigated in galaxies inside clusters. We present the first CO observations of luminous infrared galaxies (LIRGs) inside the virial radii of two intermediate redshift clusters, CL1416+4446 (z=0.397) and CL0926+1242 (z=0.489). We detect three galaxies at high significance (5 to 10 sigma), and provide robust estimates of their CO luminosities, L'CO. In order to put our results into a general context, we revisit the relation between cold and hot gas and stellar mass in nearby field and cluster galaxies. We find evidence that at fixed LIR (or fixed stellar mass), the frequency of high L'CO galaxies is lower in clusters than in the field, suggesting environmental depletion of the reservoir of cold gas. The level of star formation activity in a galaxy is primarily linked to the amount of cold gas, rather than to the galaxy mass or the lookback time. In clusters, just as in the field, the conversion between gas and stars seems universal. The relation between LIR and L'CO for distant cluster galaxies extends the relation of nearby galaxies to higher IR luminosities. Nevertheless, the intermediate redshift galaxies fall well within the dispersion of the trend defined by local systems. Considering that L'CO is generally derived from the CO(1-0) line and sensitive to the vast majority of the molecular gas in the cold interstellar medium of galaxies, but less to the part which will actually be used to form stars, we suggest that molecular gas can be stripped before the star formation rate is affected. Combining the sample of Geach et al. (2009, 2011) and ours, we find evidence for a decrease in CO towards the cluster centers. This is the first hint of an environmental impact on cold gas at intermediate redshift.
description: Accepted for publication in Astronomy and Astrophysics
title: Αρκαδικά ίχνη στο δυτικό τοπίο
Creators: name: Δουκα Ελπις-Αφροδιτη
Publisher: name: Technical University of Crete
Year: 2017

description: Σε ολόκληρη την Ελλάδα υπάρχουν τόποι έντονα φορτισμένοι ιστορικά
και συναισθηματικά, αφού ο χώρος της φαίνεται να μπορεί να φιλοξενήσει
ιδανικά τοπία και να καλλιεργήσει τους μύθους και τις ιστορίες γύρω από το
όνομά τους. Η Αρκαδία αποτελεί χαρακτηριστικό παράδειγμα ιδανικού τόπου
του ελλαδικού χώρου, η οποία έχει συμβολοποιηθεί μέσω του ομώνυμου
μύθου, ως γη αιώνιας ευδαιμονίας, ως παράδεισος.
Οι αναφορές στο ειδυλλιακό τοπίο της από εκπροσώπους των Καλών
Τεχνών, από την αρχαιότητα μέχρι τα νεότερα χρόνια, το κατέστησαν ως
ιδεώδες. Αυτό το ιδεώδες αναπτύχθηκε «εν εξορία», ως ένα ελληνικό όνειρο
της Ευρώπης και σήμερα η αναφορά του σε αυτή τη γη δε φτάνει συνήθως
πέρα από τους συγκεχυμένους απόηχους του μότο et in arcadia ego και τη
θολή ανάμνηση ενός πίνακα του Poussin.
Σκοπός της εργασίας είναι η διερεύνηση της επιρροής του αρκαδικού
μύθου στην εξέλιξη των ιδεών για το τοπίο, δια μέσω πολλαπλών
καλλιτεχνικών εκφράσεων, όπου αυτός απαντάται. Στην παρούσα ερευνητική
εργασία τίθενται τα εξής ερευνητικά ερωτήματα: πώς εκφράστηκε ο αρκαδικός
μύθος από τις Καλές Τέχνες; ,πώς συνδέεται το τοπίο της Αρκαδίας με την
έννοια του Παραδείσου και της Ουτοπίας και γιατί επιλέχθηκε αυτός το
τόπος συγκεκριμένα για την εκπροσώπησή του; και τέλος πώς επηρέασε
την υλοποίηση των ιδεών για το τοπίο στις πρώτες πρακτικές επεξεργασίας
του. Η εργασία θα επιχειρήσει να απαντήσει σε αυτά μέσω της μελέτης των
καλλιτεχνικών εκφράσεων του αρκαδικού μύθου, από την πρώτη εμφάνιση
τους μέχρι σήμερα και συγκεκριμένα στην ποίηση, στη λογοτεχνία, στη
ζωγραφική αλλά στους αντικατοπτρισμούς του στην τοπιακή επεξεργασία.
title: Αερικό θεραπευτήριο
Creators: name: Δουκα Ελπις-Αφροδιτη
name: Γκιουλε Μαρια-Ιωαννα
Publisher: name: Technical University of Crete
Year: 2017

description: Η παρούσα διπλωματική εργασία αποτελεί μία προσπάθεια μεταγραφής των αρχαίων Ασκληπιείων και εγγραφής τους στον αστικό ιστό της Αθήνας.
Στα Ασκληπιεία η ασθένεια θεωρείτο ως ένα αποτέλεσμα πολύπλοκων και αρνητικών αλληλεπιδράσεων (περιβαλλοντικών, κοινωνικών, ψυχολογικών, πνευματικών, συναισθηματικών και φυσικών παραγόντων) και η φροντίδα υγείας φαίνεται να στόχευε στην εξομάλυνση των συγκρούσεων και στην αποκατάσταση της αρμονίας του ασθενή, έχοντας ως επικουρική βοήθεια την ιατρική.
Με βάση τα παραπάνω, επεμβαίνουμε στην περιοχή Κουντουριώτικα με τη δημιουργία μιας ευέλικτης κτιριακής δομής, που φιλοξενεί δημόσια λουτρά και ολοκληρώνεται διαμορφώνοντας έναν "θεραπευτικό"  περίπατο μεταξύ πόλης και τοπίου, αναρριχώμενο στο λόφο του Λυκαβηττού και  γινόμενο ένα με τη φύση.
QIZLARDA JINSIY RIVOJLANISHDAN ORQADA QOLISHNI ERTA TASHXISLASH TAMOYILLARI
Creators: name: Ibraximova, Nodira
Publisher: name: Zenodo
Year: 2025

description: Sog'lom avlod - sog'lom oila rezervi, shuni hisobga olgan holda balog'at yoshiga yetgan  qizlarning har tomonlama yetuk rivojlanishi kelgusida oilaviy sharoitga tayyorlash uchun mezondir. JSST ma’lumotlariga  ko'ra, reproduktiv salomatlik muammosi butun dunyo olimlarining diqqat markazida bo'lib, aholining deyarli 40 %ni bolalar va o'smirlar tashkil etgan O'zbekiston Respublikasida ustuvor yo'nalishlardan biri hisoblanadi. Bu masala Respublikamizda davlat miqyosida ko'tarilgan. Bunga misol tariqasida 2009-yil o'tkazilgan tadqiqotlar shuni ko'rsatadiki, O'zbekiston Respublikasida 13-18 yoshli o'smir qizlarning umumiy 16,5%da jinsiy rivojlanishdan orqada qolish belgilari klinik namoyon bo'lgan.  Bunda qizlar va yosh ayollarning balog'atga yetish davriga alohida e'tibor beriladi. Bu yoshda salomatlikni saqlash jamiyatning reproduktiv, intellektual, iqtisodiy va ijtimoiy zaxirasiga istiqbolli hissa sifatida qaraladi.
Topology and Dark Energy: Testing Gravity in Voids
Creators: name: Spolyar, Douglas
name: Sahlén, Martin
name: Silk, Joe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Modified gravity has garnered interest as a backstop against dark matter and dark energy (DE). As one possible modification, the graviton can become massive, which introduces a new scalar field - here with a Galileon-type symmetry. The field can lead to a nontrivial equation of state (EOS) of DE which is density-and-scale-dependent. Tension between Type Ia supernovae and Planck could be reduced. In voids the scalar field dramatically alters the EOS of DE, induces a soon-observable gravitational slip between the two metric potentials, and develops a topological defect (domain wall) due to a nontrivial vacuum structure for the field.
description: Revised version, added detail, conclusions unchanged, matches PRL published version in content. 4 pages, 2 figures
Compact extra dimensions in cosmologies with f(T) structure
Creators: name: Fiorini, Franco
name: Gonzalez, P. A.
name: Vasquez, Yerko
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The presence of compact extra dimensions in cosmological scenarios in the context of f(T)-like gravities is discussed. For the case of toroidal compactifications, the analysis is performed in an arbitrary number of extra dimensions. Spherical topologies for the extra dimensions are then carefully studied in six and seven spacetime dimensions, where the proper vielbein fields responsible for the parallelization process are found.
description: 11 pages, one figure (added). Typos corrected, manuscript improved. Additional material is contained in section IV. Accepted for publication in Physical Review D