cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New theory of the gamma-alpha phase transition in Ce: quadrupolar ordering
Creators: name: Nikolaev, A. V.
name: Michel, K. H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a theoretical model of the "isostructural" γ-αphase transition in Ce which is based on quadrupolar interactions due to coupled charge density fluctuations of 4f electrons and of conduction electrons. Conduction electrons are treated in tight-binding approximation. The γ-αtransition is described as an orientational ordering of quadrupolar electronic densities in a Pa3 structure. The quadrupolar order of the conduction electron densities is complementary to the quadrupolar order of 4f electron densities. The inclusion of conduction electrons leads to an increase of the lattice contraction at the γ-αtransition in comparison to the sole effect of 4f electrons. We calculate the Bragg scattering law and suggest synchrotron radiation experiments in order to check the Pa3 structure. The theory is capable of accounting for transitions to phases of non-cubic symmetry, but it is not sufficient to describe the magnetic phenomena which we ascribe to the Kondo mechanism. We also present a microscopic derivation of multipolar interactions and discuss the crystal field of γ-Ce.
description: 19 pages, 4 figures, full version to be published in Eur. Phys. J. B
СВЯЗЬ ЦИФРОВЫХ ПЛАТЕЖЕЙ И НАСЕЛЕНИЯ В УЗБЕКИСТАНЕ
Creators: name: Алимова, София
Publisher: name: Zenodo
Year: 2024

description: Современное общество уверенно вступило на порог цифровой эпохи, осваивая новые сферы и профессии, основу развития системы государственного управления, экономической системы, частного сектора, социальной структуры общества и в целом. Конкурентоспособность на национальном рынке в основном связана с активным развитием информационно-коммуникационных технологий.
Theory of Transition Temperature of Magnetic Double Perovskites
Creators: name: Chattopadhyay, A.
name: Millis, A. J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We formulate a theory of double perovskite coumpounds such as Sr$_2$FeReO$_6$ and Sr$_2$FeMoO$_6$ which have attracted recent attention for their possible uses as spin valves and sources of spin polarized electrons. We solve the theory in the dynamical mean field approximation to find the magnetic transition temperature $T_c$. We find that $T_c$ is determined by a subtle interplay between carrier density and the Fe-Mo/Re site energy difference, and that the non-Fe same-sublattice hopping acts to reduce $T_c$. Our results suggest that presently existing materials do not optimize $T_c$.
Engineering chiral edge states in 2D topological insulator/ferromagnetic insulator heterostructures
Creators: name: Chen, Xi-Rong
name: Chen, Wei
name: Shao, L. B.
name: Xing, D. Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Chiral edge state (CES) at zero magnetic field has already been realized in the magnetically doped topological insulator (TI). However, this scheme strongly relies on material breakthroughs, and in fact, most of the TIs cannot be driven into a Chern insulator in this way. Here, we propose to achieve the CESs in 2D TI/ferromagnetic insulator/TI sandwiched structures through spin-selective coupling between the helical edge states of the two TIs. Due to this coupling, the edge states of one spin channel are gapped and those of the other spin channel remain almost gapless, so that the helical edge states of each isolated TI are changed into the CESs. Such CESs can be hopefully achieved in all TI materials, which are immune to magnetic-disorder-induced backscattering. We propose to implement our scheme in the van der Waals heterostructures between monolayer 1T'-WTe$_2$ and bilayer CrI$_3$. The electrical control of magnetism in bilayer CrI$_3$ switches the transport direction of the CESs, which can realize a low-consumption transistor.
description: 7 pages, 6 figures, revised manuscript accepted in Phys. Rev. B
Velia gridellii Tamanini 1947
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia gridellii

description: Velia gridellii Tamanini, 1947
 Velia gridellii Tamanini, 1947: 23, 25, 28, 30–31, 35, 41, 52, 54–56, Figs 33–34, 75–78, 100 (original description, key).
Two paratypes are deposited in NMPC:
PARATYPE (J apter.):‘TRENTINO / Val Lagarina [p] / Bordala 8.9.46 [hw] // Velia J / Gridelii Tam.[hw] / paratypus [hw, red ink] / Det. Tamanini L. [hw]’.
PARATYPE (♀ apter.):‘TRENTINO / Val Lagarina [p] / Bordala 8.9.46 [hw] // Velia ♀ / Gridelii Tam.[hw] / paratypus [hw, red ink] / Det. Tamanini L. [hw]’.
 Current status. Valid species: Velia (Plesiovelia) gridellii Tamanini, 1947 (see ANDERSEN 1995a).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 858, DOI: 10.5281/zenodo.5740731
The synchrotron maser emission from relativistic shocks in Fast Radio Bursts: 1D PIC simulations of cold pair plasmas
Creators: name: Plotnikov, Illya
name: Sironi, Lorenzo
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The emission process of Fast Radio Bursts (FRBs) remains unknown. We investigate whether the synchrotron maser emission from relativistic shocks in a magnetar wind can explain the observed FRB properties. We perform particle-in-cell (PIC) simulations of perpendicular shocks in cold pair plasmas, checking our results for consistency among three PIC codes. We confirm that a linearly polarized X-mode wave is self-consistently generated by the shock and propagates back upstream as a precursor wave. We find that at magnetizations $σ\gtrsim 1$ (i.e., ratio of Poynting flux to particle energy flux of the pre-shock flow) the shock converts a fraction $f_ξ' \approx 7 \times 10^{-4}/σ^2$ of the total incoming energy into the precursor wave, as measured in the shock frame. The wave spectrum is narrow-band (fractional width $\lesssim 1-3$), with apparent but not dominant line-like features as many resonances concurrently contribute. The peak frequency in the pre-shock (observer) frame is $ω^{\prime \prime}_{\rm peak} \approx 3 γ_{\rm s | u} ω_{\rm p}$, where $γ_{\rm s|u}$ is the shock Lorentz factor in the upstream frame and $ω_{\rm p}$ the plasma frequency. At $σ\gtrsim1$, where our estimated $ω''_{\rm peak}$ differs from previous works, the shock structure presents two solitons separated by a cavity, and the peak frequency corresponds to an eigenmode of the cavity. Our results provide physically-grounded inputs for FRB emission models within the magnetar scenario.
description: MNRAS in press. 19 pages, 15 figures, 2 appendices. Added appendix B that compares 1d, 2d, and 3d results
Velia hoberlandti Tamanini 1951
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia hoberlandti

description: Velia hoberlandti Tamanini, 1951
 Velia hoberlandti Tamanini, 1951b: 5–10, Figs 2E–I, 3A–C, 4I–N (original description).
The holotype and three paratypes (including the allotype) are deposited in NMPC:
HOLOTYPE (J macr.): ‘Is. Baleares [hw] / Palma. [p] // Velia / Hoberlandti / Palma. J [hw; card with attached microslides] // Coll. L. Salvator [p] // Holotypus [p] / Velia J / Hoberlandti / n. sp. [hw] / DET- L. TAMANINI 19[p]49 [hw, red label]’. (The specimen is card-mounted, right middle leg missing; genitalia dissected, mounted on microslides attached to the same pin).
PARATYPE (♀ macr.): ‘Is. Baleares [hw] / Alfabia. [p] // Coll. L. Salvator [p] // Allotypus [p] / Velia ♀ / Hoberlandti / n. sp. [hw] / DET- L. TAMANINI 19[p]49 [hw, red label]’.
PARATYPE (♀ macr.): ‘Is. Baleares [hw] / Inea. [p] // Coll. L. Salvator [p] // PARATYPUS [p] / Velia ♀ / Hoberlandti / n. sp. [hw] / DET- L. TAMANINI [p] 49 [hw, red label]’.
PARATYPE (♀ apter.): ‘Is. Baleares [hw] / Es Prat / de S. Jordi. [p] // Coll. L. Salvator [p] // PARATYPUS [p] / Velia ♀ / Hoberlandti / n. sp. [hw] / DET- L. TAMANINI [p] 49 [hw, red label]’.
 Current status. Valid species: Velia (Plesiovelia) hoberlandti Tamanini, 1951 (see ANDERSEN 1995a).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 858, DOI: 10.5281/zenodo.5740731
Cosmology in modified $f(R,T)$-gravity
Creators: name: Tretyakov, Petr V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In present paper we propose further modification of $f(R,T)$-gravity (where $T$ is trace of energy-momentum tensor) by introducing higher derivatives matter fields. We discuss stability conditions in proposed theory and find restrictions for parameters to prevent appearance of main type of instabilities, such as ghost-like and tachyon-like instabilities. We derive cosmological equations for a few representations of theory and discuss main differences with convenient $f(R,T)$-gravity without higher derivatives. It is demonstrated that in presented theory inflationary scenarios appears quite naturally even in the dust-filled Universe without any additional matter sources. Finally we construct inflationary model in one of the simplest representation of the theory, calculate main inflationary parameters and find that it may be in quite agreement with observations.
Velia mancinii Tamanini 1947
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia mancinii

description: Velia mancinii Tamanini, 1947
 Velia mancinii Tamanini, 1947: 25, 27–28, 30–31, 53, 57, 63, 66–69, Figs 47–49, 107–108, 113–114, 133, 136 (original description, key).
The holotype and three paratypes (including the allotype) are deposited in NMPC:
PARATYPE (♀): ‘Kresnensko def./ 24.6. 38 Bulg. Maced./ lgt. L. Hoberlandt.[p] // Collectio / L. Hoberlandt [p] // Velia [hw] / 19[p]41 rivulorum Fab. / apt. [hw] / L. Hoberlandt det. [p] ♀ [hw] // Velia ♀ / Mancinii [hw] / paratypus. [hw, red ink] Tam. [hw] / DET. TAMANINI L. [p] // Mus. Nat. Pragae / Inv. [p] 1215 [hw, orange label]’.
 Current status. Valid species: Velia (Plesiovelia) mancinii mancinii Tamanini, 1947 (see TAMANINI 1955, ANDERSEN 1995a, KANYUKOVA 2006).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 858, DOI: 10.5281/zenodo.5740731
Spin rotation effects in diffractive electroproduction of heavy quarkonia
Creators: name: Krelina, Michal
name: Nemchik, Jan
name: Pasechnik, Roman
name: Cepila, Jan
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we present for the first time the comprehensive study of the Melosh spin rotation effects in diffractive electroproduction of S-wave heavy quarkonia off a nucleon target. Such a study has been performed within the color dipole approach using, as an example and a reference point, two popular parametrizations of the dipole cross section and two potentials describing the interaction between Q and bar{Q} and entering in the Schroedinger equation based formalism for determination of the quarkonia wave functions. We find a strong onset of spin rotation effects in 1S charmonium photoproduction which is obviously neglected in present calculations of corresponding cross sections. For photoproduction of radially excited Psi'(2S) these effects are even stronger leading to an increase of the photoproduction cross section by a factor of 2-3 depending on the photon energy. Even in production of radially excited Y'(2S) and Y"(3S) they can not be neglected and cause the 20-30% enhancement of the photoproduction cross section. Finally, we predict that the spin effects vanish gradually with photon virtuality Q^2 following universality properties in production of different heavy quarkonia as a function of Q^2 + M_V^2.
description: 23 pages of Latex including 10 figures. The version for resubmission to European Physical Journal C
Critical Exponents near a Random Fractal Boundary
Creators: name: Cardy, John
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The critical behaviour of correlation functions near a boundary is modified from that in the bulk. When the boundary is smooth this is known to be characterised by the surface scaling dimension $\xt$. We consider the case when the boundary is a random fractal, specifically a self-avoiding walk or the frontier of a Brownian walk, in two dimensions, and show that the boundary scaling behaviour of the correlation function is characterised by a set of multifractal boundary exponents, given exactly by conformal invariance arguments to be $λ_n = 1/48 (\sqrt{1+24n\xt}+11)(\sqrt{1+24n\xt}-1)$. This result may be interpreted in terms of a scale-dependent distribution of opening angles $α$ of the fractal boundary: on short distance scales these are sharply peaked around $α=π/3$. Similar arguments give the multifractal exponents for the case of coupling to a quenched random bulk geometry.
description: 13 pages. Comments on relation to results in quenched random bulk added, and on relation to other recent work. Typos corrected
Velia noualhieri Puton 1889
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia noualhieri

description: Velia noualhieri Puton, 1889
 Velia noualhieri Puton, 1889: 307−308 (original description).
One syntype is deposited in NMPC:
 SYNTYPE (J apter.): ‘La Chiffah / Algérie [p, blue label with black frame submarginally] // M. Noualhier. [p] // J [p] // Velia / Noualhieri / Put. [hw] // SYNTYPUS / VELIA / NOUALHIERI / Puton, 1889 / labelled: P. KMENT 2013 [p, red label]’.
 Current status. Valid species: Velia (Plesiovelia) noualhieri noualhieri Puton, 1889 (see TAMANINI 1968, ANDERSEN 1995a).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 859, DOI: 10.5281/zenodo.5740731
Static Friction between Elastic Solids due to Random Asperities
Creators: name: Sokoloff, J. B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Several workers have established that the Larkin domains for two three dimensional nonmetallic elastic solids in contact with each other at a disordered interface are enormously large. This implies that there should be negligible static friction per unit area in the macroscopic solid limit. The present work argues that the fluctuations in the heights of the random asperities at the interface that occur in the Greenwood-Williamson model can account for static friction.
description: Contains some improvements in the treatment of the subject
Understanding the pain experience in hip and knee osteoarthritis – an OARSI/OMERACT initiative
Creators: name: French, M.R.
name: March, L.
name: Gooberman-Hill, R.
name: Suarez-Almazor, M.
name: Hawker, G.A.
name: Jordan, J.M.
name: Cibere, J.
name: Stewart, L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: OBJECTIVE: To examine the pain experience of people with hip or knee osteoarthritis (OA), particularly changes over time and most distressing features.

METHOD: Focus groups in individuals aged 40+ years with painful hip or knee OA obtained detailed descriptions of OA pain from early to late disease. A modified Patient Generated Index (PGI) was used to assess the features of OA pain that participants found most distressing. Content analysis was performed to examine response patterns; descriptive statistics were used to summarize PGI responses.

RESULTS: Mean age of the 143 participants (52 hip OA; 91 knee OA) was 69.5 years (47-92 years); 60.8% were female and 93.7% Caucasian. Participants described two distinct types of pain - a dull, aching pain, which became more constant over time, punctuated increasingly with short episodes of a more intense, often unpredictable, emotionally draining pain. The latter, but not the former, resulted in significant avoidance of social and recreational activities. From PGI responses, distressing pain features were: the pain itself (particularly intense and unpredictable pain) and the pain's impact on mobility, mood and sleep.

CONCLUSIONS: Two distinct pain types were identified. Intermittent intense pain, particularly when unpredictable, had the greatest impact on quality of life.
Comparative evaluation of three semi-quantitative radiographic grading techniques for hip osteoarthritis in terms of validity and reproducibility in 1404 radiographs: report of the OARSI-OMERACT Task Force
Creators: name: Fang, F.
name: Gossec, L.
name: Dougados, M.
name: Jordan, J.M.
name: Maillefert, J.F.
name: Lam, M.-A.
name: Renner, J.B.
name: Davis, A.
name: Hawker, G.A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: OBJECTIVE: The objective of this work was to compare the measurement properties of three categorical X-ray scoring methods for hip osteoarthritis (OA).

METHODS: In data obtained from trials and cohorts, radiographs were evaluated using the Kellgren and Lawrence (KL) grading system, the Osteoarthritis Research Society International (OARSI) joint space narrowing score, and quantitative measurement of joint space width (JSW), analysed as a categorical variable according to Croft and Lane's cutoffs (1.5, 2.5 and 3mm). Predictive validity was assessed through logistic regression to predict joint replacement in one database. Construct validity was assessed through logistic regression between pain and function and X-ray stages. Inter-observer and intra-observer reliability were assessed in 50 subjects by weighted kappa. Sensitivity to change was assessed in 50 patients over a 24-month interval, by standardized response mean (SRM).

RESULTS: Radiographs were available from one trial and two cohorts (1404 X-rays). All three methods predicted joint replacement in the trial. Correlation with clinical parameters was low for the three scoring methods, except for the single community-based cohort. Interrater reliability was higher for categorical JSW (kappa, 0.71 vs 0.44 and 0.47 for KL and OARSI, respectively). Intrarater reliability was similar for the three methods (0.79 vs 0.69 and 0.81). Sensitivity to change was higher for categorical JSW than KL and OARSI (SRM, 0.77 vs 0.28 and 0.35).

CONCLUSION: Categorical JSW has similar validity and higher sensitivity to change than the other categorical scoring techniques in hip OA. These results indicate categorical JSW may be the preferred method to evaluate structural severity in hip OA clinical trials.
Assessment of neonatal, cord, and adult platelet granule trafficking and secretion
Creators: name: Ngo, Anh T. P.
name: Jawaad Sheriff
name: Rocheleau, Anne D.
name: Bucher, Matthew
name: Jones, Kendra R.
name: Anna-Liisa I. Sepp
name: Malone, Lisa E.
name: Zigomalas, Amanda
name: Maloyan, Alina
name: Wadie F. Bahou
name: Bluestein, Danny
name: McCarty, Owen J. T.
name: Haley, Kristina M.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology
subject: 110309 Infectious Diseases

description: Despite the transient hyporeactivity of neonatal platelets, full-term neonates do not display a bleeding tendency, suggesting potential compensatory mechanisms which allow for balanced and efficient neonatal hemostasis. This study aimed to utilize small-volume, whole blood platelet functional assays to assess the neonatal platelet response downstream of the hemostatic platelet agonists thrombin and adenosine diphosphate (ADP). Thrombin activates platelets via the protease-activated receptors (PARs) 1 and 4, whereas ADP signals via the receptors P2Y1 and P2Y12 as a positive feedback mediator of platelet activation. We observed that neonatal and cord blood-derived platelets exhibited diminished PAR1-mediated granule secretion and integrin activation relative to adult platelets, correlating to reduced PAR1 expression by neonatal platelets. PAR4-mediated granule secretion was blunted in neonatal platelets, correlating to lower PAR4 expression as compared to adult platelets, while PAR4 mediated GPIIb/IIIa activation was similar between neonatal and adult platelets. Under high shear stress, cord blood-derived platelets yielded similar thrombin generation rates but reduced phosphatidylserine expression as compared to adult platelets. Interestingly, we observed enhanced P2Y1/P2Y12-mediated dense granule trafficking in neonatal platelets relative to adults, although P2Y1/P2Y12 expression in neonatal, cord, and adult platelets were similar, suggesting that neonatal platelets may employ an ADP-mediated positive feedback loop as a potential compensatory mechanism for neonatal platelet hyporeactivity.
Impurity effect on low-temperature polarisation of the charge-density-waves in o-TaS$_3$
Creators: name: Baklanov, N. I.
name: Zaitsev-Zotov, S. V.
name: Frolov, V. V.
name: Monceau, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature dependence of the low-temperature dielectric response is studied in o-TaS$_3$ samples doped by Nb, Se, and Ni and for nominally pure ones. It is found, that the low-temperature dielectric constant depends anomalously on doping and is higher for doped crystals, whereas the temperature dependence of the characteristic time of all samples follows the activation law with nearly the same activation energy $\sim 400$ K (T>20 K). The observed behaviour is inconsistent with all available explanations of the low-temperature dielectric anomaly.
description: RevTex, 12 pages, epsf, 2 postscript Figures. Accepted for publication in Physics Letters A
Magneto-Transport properties in the thin films of Charge ordered thin films
Creators: name: Venimadhav, A.
name: Hegde, M. S.
name: Rawat, R.
name: Das, I.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Thin films of Pr0.7Ca 0.3MnO3, Nd-0.5Ca0.5MnO3 and Nd0.5Sr0.5MnO3 have been fabricated. by pulse laser deposition. Magnetic and electrical transport properties of these films were compared with their bulk solids. All the films grow in (101) direction on LaAlO3(100). Electrical transport measurements carried out with and without magnetic field has shown dr/dT<0 in these thin films. Application of magnetic field has shown dilution of the insulating behavior. The magnetization studies of Nd-0.5Sr0.5MnO3 exhibited ferromagnetic behavior at 260K and showed antiferomagnetic feature below 130K. This is close to the bulk magnetic behavior of Nd-0.5Sr0.5MnO3. Pr0.7Ca0.3MnO3 showed ferromagnetic transition below 130K and becomes antiferromagnetic at 90K. Nd-0.5Ca0.5MnO3 showed paramagnetic behavior down to low temperatures. Deviation in the properties of the thin films from the bulk solids is attributed to the growth of the films in more symmetric structure.
description: 11 pages, 4 figures
Critical Behavior of the Three-Dimensional Ising Spin Glass
Creators: name: Ballesteros, H. G.
name: Cruz, A.
name: Fernandez, L. A.
name: Martin-Mayor, V.
name: Pech, J.
name: Ruiz-Lorenzo, J. J.
name: Tarancon, A.
name: Tellez, P.
name: Ullod, C. L.
name: Ungil, C.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have simulated, using parallel tempering, the three dimensional Ising spin glass model with binary couplings in a helicoidal geometry. The largest lattice (L=20) has been studied using a dedicated computer (the SUE machine). We have obtained, measuring the correlation length in the critical region, a strong evidence for a second-order finite temperature phase transition ruling out other possible scenarios like a Kosterlitz-Thouless phase transition. Precise values for the $ν$ and $η$ critical exponents are also presented.
description: RevTex; 12 pages plus 5 ps figures. Final version to be published in PRB
Homogeneous nucleation of quark-gluon plasma, finite size effects and long-lived metastable objects
Creators: name: Zabrodin, E.
name: Bravina, L.
name: Stoecker, H.
name: Greiner, W.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The general formalism of homogeneous nucleation theory is applied to study the hadronization pattern of the ultra-relativistic quark-gluon plasma (QGP) undergoing a first order phase transition. A coalescence model is proposed to describe the evolution dynamics of hadronic clusters produced in the nucleation process. The size distribution of the nucleated clusters is important for the description of the plasma conversion. The model is most sensitive to the initial conditions of the QGP thermalization, time evolution of the energy density, and the interfacial energy of the plasma-hadronic matter interface. The rapidly expanding QGP is first supercooled by about $ΔT = T - T_c = 4-6 %$. Then it reheats again up to the critical temperature T_c. Finally it breaks up into hadronic clusters and small droplets of plasma. This fast dynamics occurs within the first $5-10 fm/c$. The finite size effects and fluctuations near the critical temperature are studied. It is shown that a drop of longitudinally expanding QGP of the transverse radius below 4.5 fm can display a long-lived metastability. However, both in the rapid and in the delayed hadronization scenario, the bulk pion yield is emitted by sources as large as 3-4.5 fm. This may be detected experimentally both by a HBT interferometry signal and by the analysis of the rapidity distributions of particles in narrow p_T-intervals at small p_T on an event-by-event basis.
description: 29 pages, incl. 12 figures and 1 table; to be published in Phys. Rev. C
Anisotropic pressure of deconfined QCD matter in presence of strong magnetic field within one-loop approximation
Creators: name: Karmakar, Bithika
name: Ghosh, Ritesh
name: Bandyopadhyay, Aritra
name: Haque, Najmul
name: Mustafa, Munshi G
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Considering the general structure of the two point functions of quarks and gluons, we compute the free energy and pressure of a strongly magnetized hot and dense QCD matter created in heavy-ion collisions. In presence of strong magnetic field we found that the deconfined QCD matter exhibits a paramagnetic nature. One gets different pressure in a direction parallel and perpendicular to magnetic field due to the magnetization acquired by the system. We obtain both longitudinal and transverse pressure, and magnetization of a hot deconfined QCD matter in presence of magnetic field. We have used hard thermal loop approximation (HTL) for heat bath. We obtained completely analytic expression for pressure and magnetization under certain approximation. Various divergences appearing in free energy are regulated using appropriate counter terms. The obtained anisotropic pressure may be useful for magnetohydrodynamics description of a hot and dense deconfined QCD matter produced in heavy-ion collisions.
description: 37 pages, 8 figures
First order transitions and multicritical points in weak itinerant ferromagnets
Creators: name: Belitz, D.
name: Kirkpatrick, T. R.
name: Vojta, Thomas
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It is shown that the phase transition in low-T_c clean itinerant ferromagnets is generically of first order, due to correlation effects that lead to a nonanalytic term in the free energy. A tricritical point separates the line of first order transitions from Heisenberg critical behavior at higher temperatures. Sufficiently strong quenched disorder suppresses the first order transition via the appearance of a critical endpoint. A semi-quantitative discussion is given in terms of recent experiments on MnSi, and predictions for other experiments are made.
description: 4 pp., REVTeX, epsf, 3 eps figs, final version as published
Meniscal tissue explants response depends on level of dynamic compressive strain
Creators: name: Kadmiel, M.
name: Haut Donahue, T.L.
name: Zielinska, B.
name: Killian, M.
name: Nelsen, M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: OBJECTIVE: Following partial meniscectomy, the remaining meniscus is exposed to an altered loading environment. In vitro 20% dynamic compressive strains on meniscal tissue explants has been shown to lead to an increase in release of glycosaminoglycans from the tissue and increased expression of interleukin-1alpha (IL-1alpha). The goal of this study was to determine if compressive loading which induces endogenously expressed IL-1 results in downstream changes in gene expression of anabolic and catabolic molecules in meniscal tissue, such as MMP expression.

METHOD: Relative changes in gene expression of MMP-1, MMP-3, MMP-9, MMP-13, A Disintegrin and Metalloproteinase with ThromboSpondin 4 (ADAMTS4), ADAMTS5, TNFalpha, TGFbeta, COX-2, Type I collagen (COL-1) and aggrecan and subsequent changes in the concentration of prostaglandin E(2) released by meniscal tissue in response to varying levels of dynamic compression (0%, 10%, and 20%) were measured. Porcine meniscal explants were dynamically compressed for 2h at 1Hz.

RESULTS: 20% dynamic compressive strains upregulated MMP-1, MMP-3, MMP-13 and ADAMTS4 compared to no dynamic loading. Aggrecan, COX-2, and ADAMTS5 gene expression were upregulated under 10% strain compared to no dynamic loading while COL-1, TIMP-1, and TGFbeta gene expression were not dependent on the magnitude of loading.

CONCLUSION: This data suggests that changes in mechanical loading of the knee joint meniscus from 10% to 20% dynamic strain can increase the catabolic activity of the meniscus.
Diffusiophoresis in Cells: a General Non-Equilibrium, Non-Motor Mechanism for the Metabolism-Dependent Transport of Particles in Cells
Creators: name: Sear, Richard P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The more we learn about the cytoplasm of cells, the more we realise that the cytoplasm is not uniform but instead is highly inhomogeneous. In any inhomogeneous solution, there are concentration gradients, and particles move either up or down these gradients due to a mechanism called diffusiophoresis. I estimate that inside metabolically active cells, the dynamics of particles can be strongly accelerated by diffusiophoresis, provided that they are at least tens of nanometres across. The dynamics of smaller objects, such as single proteins are largely unaffected.
description: 8 pages, 2 figures
OARSI Clinical Trials Recommendations: Design and conduct of clinical trials for hand osteoarthritis
Creators: name: Dreiser, R.-L.
name: Wang, S.
name: Jiang, G.-L.
name: Mandl, L.
name: Neogi, T.
name: Pelletier, J.-P.
name: Kraus, V.B.
name: Kloppenburg, M.
name: Punzi, L.
name: Cicuttini, F.
name: Martel-Pelletier, J.
name: Doherty, M.
name: Nelson, A.E.
name: Ramonda, R.
name: Maheu, E.
name: Henrotin, Y.
name: Simon, L.S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Hand osteoarthritis (OA) is a very frequent disease, but yet understudied. However, a lot of works have been published in the past 10 years, and much has been done to better understand its clinical course and structural progression. Despite this new knowledge, few therapeutic trials have been conducted in hand OA. The last OARSI recommendations for the conduct of clinical trials in hand OA dates back to 2006. The present recommendations aimed at updating previous recommendations, by incorporating new data. The purpose of this expert opinion, consensus driven exercise is to provide evidence-based guidance on the design, execution and analysis of clinical trials in hand OA, where published evidence is available, supplemented by expert opinion, where evidence is lacking, to perform clinical trials in hand OA, both for symptom and for structure-modification. They indicate core outcome measurement sets for studies in hand OA, and list the methods and instruments that should be used to measure symptoms or structure. For both symptom- and structure-modification, at least pain, physical function, patient global assessment, HR-QoL, joint activity and hand strength should be assessed. In addition, for structure-modification trials, structural progression should be measured by radiographic changes. We also provide a research agenda listing many unsolved issues that seem to most urgently need to be addressed from the perspective of performing "good" clinical trials in hand OA. These updated OARSI recommendations should allow for better standardizing the conduct of clinical trials in hand OA in the next future.
Individual differences underlying susceptibility to addiction: Role for the endogenous oxytocin system
Creators: name: Carter, C. Sue
name: Hull, Philip R.
name: Gordon, Jake J.
name: Tops, Mattie
name: Buisman-Pijlman, Femke T.A.
name: Sumracki, Nicole M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Recent research shows that the effects of oxytocin are more diverse than initially thought and that in some cases oxytocin can directly influence the response to drugs and alcohol. Large individual differences in basal oxytocin levels and reactivity of the oxytocin system exist. This paper will review the literature to explore how individual differences in the oxytocin system arise and examine the hypothesis that this may mediate some of the individual differences in susceptibility to addiction and relapse. Differences in the oxytocin system can be based on individual factors, e.g. genetic variation especially in the oxytocin receptor, age or gender, or be the result of early environmental influences such as social experiences, stress or trauma. The paper addresses the factors that cause individual differences in the oxytocin system and the environmental factors that have been identified to induce long-term changes in the developing oxytocin system during different life phases. Individual differences in the oxytocin system can influence effects of drugs and alcohol directly or indirectly. The oxytocin system has bidirectional interactions with the stress-axis, autonomic nervous system, neurotransmitter systems (e.g. dopamine, serotonin and GABA/glutamate) and the immune system. These systems are all important, even vital, in different phases of addiction. It is suggested that early life adversity can change the development of the oxytocin system and the way it modulates other systems. This in turn could minimise the negative feedback loops that would normally exist. Individuals may show only minor differences in behaviour and function unless subsequent stressors or drug use challenges the system. It is postulated that at that time individual differences in oxytocin levels, reactivity of the system or interactions with other systems can influence general resilience, drug effects and the susceptibility to develop problematic drug and alcohol use.
ACID-BASE PROPERTIES OF a,b-UNSATURATED KETONES OBTAINED FROM REACTION OF 5-FORMYL-8-HYDROXYQUINOLINE WITH P-SUBSTITUTED ACETOPHENONES
Creators: name: Fernandez-Maestre, Roberto
Publisher: name: figshare
Year: 2019
Subjects: subject: 30199 Analytical Chemistry not elsewhere classified
subject: FOS: Chemical sciences

description: Chalcones (a,b-unsaturated ketones) containing aromatic or heterocyclic radicals are highly reactive,allowing the synthesis of novel organic compounds. In this study, the dissociation constants (pKa) of sevenchalcones derived from 8-hydroxyquinoline were determined and the influence on dissociation of substituents inthe phenyl group (-CH3, -OCH3, -N(CH3)2, -Cl, -Br, and -NO2) was analysed. pKa values are important becausethey determine the pH at which ligands are fully deprotonated -when they show their maximum chelatingproperties- and determine the ligands interactions at different pH values. The chalcones’ pKa’s were calculatedby visible ultraviolet spectroscopy in a water-ethanol (1:1) mixture using the Henderson-Hasselbach equation. Itwas shown that the 8-hydroxyquinolinic fragment has a large electron donor effect on the π system of thechalcones. The introduction of substituents (R) in the phenyl fragment of the chalcones slightly affected thedissociation of the hydroxyl group and the protonation of the nitrogen in the hydroxyquinoline fragment. Theacceptor substituents (Cl, Br, NO2) increased the polarity of OH- and its acidity. Nitrogen protonation decreasedelectron donor properties of this fragment, and deprotonation of the hydroxyl caused the opposite effect.Substituents introduction in the phenyl fragment slightly affected hydroxyl group dissociation and nitrogenprotonation.
title: Effect of protected zone on polychaete diversity, abundance and distribution in the Wadden Sea intertidal zone
Creators: name: Storm, Hunter
name: Mancini, Beatrice
name: Lau, Chung Wai
Publisher: name: Humboldt-Universität zu Berlin
Year: 2025
Subjects: subject: Shannon Wiener
subject: 570 Biologie

description: Polychaetes are a diverse group of marine invertebrates widely distributed in soft sediments. This study examined potential differences in the abundance and species composition of polychaetes in public and protected areas of the Wadden Sea National Park in northern Germany. The two sampled areas differed in the level of ecological disturbance; the public beach being used for human recreation while the protected area was a breeding place for birds and accessible only to researchers. Polychaetes were sampled in the intertidal zone on each side of the fence separating the public and protected areas. Samples were analyzed for species abundance using an independent sample t-test and species diversity examined using the Shannon-Weiner Diversity Index. 30 total sites (15 protected and 15 public) were sampled over a period of 3 days at the end of July 2024, polychaetes were collected and identified to species level resulting in 251 total observations of 11 distinct species. Statistical analysis demonstrated no difference in polychaete abundance or species composition between the protected and public areas. This supports the conclusion that polychaete populations in the Wadden Sea National Park are not heavily impacted by predation from migrating birds living in the protected area and are resilient to disturbance caused by human activities on the public beach.
Cosmological sign of neutrino CP violation
Creators: name: Frampton, P.H
name: Yanagida, T
name: Glashow, S.L
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: It is shown how, in a class of models, the sign of the baryon number of the universe can be related to CP violation in neutrino oscillation experiments.
AdS/CFT correspondence and QCD with quarks in fundamental representations
Creators: name: Frampton, Paul H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: The most straightforward use of AdS/CFT correspondence gives versions of QCD where quarks are in adjoint representations. Using an asymmetric orbifold approach we obtain nonsupersymmetric QCD with four quark flavors in fundamental representations of color.
Anomaly cancellation and conformality in quiver gauge theories
Creators: name: Frampton, Paul H.
name: Di Napoli, Edoardo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Abelian quiver gauge theories provide non-supersymmetric candidates for the conformality approach to physics beyond the standard model. Written as , gauge theories, however, they have mixed and triangle anomalies. It is shown how to construct explicitly a compensatory term which restores gauge invariance of under . It can lead to a negative contribution to the -function and hence to one-loop conformality at high energy for all dimensionless couplings.
Velia obenbergeri Hoberlandt 1941
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia obenbergeri

description: Velia obenbergeri Hoberlandt, 1941
 Velia obenbergeri Hoberlandt, 1941b: 162–163, Figs 6, 19–20 (original description).
The holotype and 10 paratypes (including the allotype) are deposited in NMPC:
HOLOTYPE (J apter.): ‘Insula / Gaudos [p] // 15. V. 1938 / Táborský [hw] // Holotypus [p, red label with black margins] // Velia [hw] / 19[p]41 / obenbergeri n sp. [hw] / L. Hoberlandt det. [p] J [hw]’. (The specimen is card-mounted; right antenna, all legs on right side, and pygophore dissected, mounted on two separate slides in Slide Box 4).
PARATYPES (3 JJ apter.): ‘Insula / Gaudos [p] // 15. V. 1938 / Táborský [hw] // Paratypus [p, red label with black margins] // Velia [hw] / 19[p]41 / obenbergeri n sp. [hw] / L. Hoberlandt det. [p] J [hw]’.
PARATYPE (J apter.): ‘Insula / Gaudos [p] // 15. V. 1938 / Dr. K. Táborský [hw] // Paratypus [p, red label with black margins] // Collectio / L. Hoberlandt [p] // Velia [hw] / 19[p]41 / obenbergeri n sp. J [hw] / L. Hoberlandt det. [p]’.
PARATYPE (♀ apter.): ‘Insula / Gaudos [p] // 15.V. 1938 / Táborský [hw] // Allotypus [p, red label with black margins] // Velia [hw] / 19[p]41 / obenbergeri n sp. [hw] / L. Hoberlandt det. [p] ♀ [hw]’.
PARATYPES (5 ♀♀ apter.): ‘Insula / Gaudos [p] // 15. V. 1938 / Táborský [hw] // Paratypus [p, red label with black margins] // Velia [hw] / 19[p]41 / obenbergeri n sp. [hw] / L. Hoberlandt det. [p] ♀ [hw]’.
 Note. Collection also includes seven additional slides containing various body parts originating from paratypes, and one slide containing head with antennae, and one fore, middle and hind leg, indicated as originating from the holotype, evidently by mistake; the slides are deposited in Slide Box 4.
 Current status. Junior synonym of Velia (Plesiovelia) rhadamantha rhadamantha Hoberlandt, 1941 (see TAMANINI 1947, ANDERSEN 1995a).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 859, DOI: 10.5281/zenodo.5740731
Velia obenbergeri subsp. cresia Hoberlandt 1941
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Velia
Velia obenbergeri
Velia obenbergeri cresia hoberlandt, 1941

description: Velia obenbergeri cresia Hoberlandt, 1941
 Velia obenbergeri cresia Hoberlandt, 1941b: 163 (original description).
The holotype is deposited in NMPC:
HOLOTYPE (♀ apter.): ‘Knossos, Creta / Mařan et Štěp. / 1934 Coll. Bartoň [p] // Holotypus [p, red label with black margins] // Velia [hw] 19[p]41 obenbergeri / cresia n. ♀ [hw] / L. Hoberlandt det. [p] // Velia [hw] ♀ [hw, red ink] / rhadamantha [hw] / immatura [hw, i in black ink, rest in red ink] Hoberl. [hw] / DET. TAMANINI L. [p]’. (The specimen is card-mounted, immature; left mesotibia, mesotarsus and hind leg, and apical segments of both antennae missing).
 Current status. Junior synonym of Velia (Plesiovelia) rhadamantha rhadamantha Hoberlandt, 1941 (see TAMANINI 1947, ANDERSEN 1995a).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 859, DOI: 10.5281/zenodo.5740731
title: Effect of anemone presence on blue mussel Mytilus edulis predation by the sea star Asterias rubens
Creators: name: Park, Seowon
Publisher: name: Humboldt-Universität zu Berlin
Year: 2025
Subjects: subject: Behaviour
subject: Anthozoa
subject: 570 Biologie

description: The effect of anemone attachment on the predation of the blue mussel Mytilus edulis by the common sea star Asterias rubens was tested. These organisms are found in abundance around the island of Sylt, where their interactions shape community structures. Overall, a preference for mussels without anemones over anemone-equipped mussels and preference for mussels covered with other epibionts over epibiont-free mussels were observed. This indicates that A. rubens do not simply avoid anemone-equipped mussels due to physical hindrance but rather that the avoidance behaviour is specific to anemones, possibly due to their ability to deploy cnidocytes for defence.