cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic entropy, shell structure, and size-evolutionary patterns of metal clusters
Creators: name: Yannouleas, Constantine
name: Landman, Uzi
Publisher: name: arXiv
Year: 1999
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Condensed Matter (cond-mat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that electronic-entropy effects in the size-evolutionary patterns of relatively small (as small as 20 atoms), simple-metal clusters become prominent already at moderate temperatures. Detailed agreement between our finite-temperature-shell-correction-method calculations and experimental results is obtained for certain temperatures. This agreement includes a size-dependent smearing out of fine-structure features, accompanied by a measurable reduction of the heights of the steps marking major-shell and subshell closings, thus allowing for a quantitative analysis of cluster temperatures.
description: Latex/Revtex, 4 pages with 3 Postscript figures
Oxylipeurus colchicus Clay 1938
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Oxylipeurus
Oxylipeurus colchicus

description: Oxylipeurus colchicus Clay, 1938
 Oxylipeurus mesopelios colchicus Clay, 1938: 177, pl. 11: fig. 3.
 Oxylipeurus colchicus Clay, 1938; Hopkins & Clay 1952: 256.
 Oxylipeurus mesopelios colchicus Clay, 1938; Pilgrim & Palma 1982: 18.
 Oxylipeurus colchicus Clay, 1938; Price et al. 2003: 203.
 Oxylipeurus colchicus (Clay, 1938) [sic]; González-Acuña et al. 2009: 183.
 Oxylipeurus mesopelios colchicus Clay, 1938; Palma 2017: 151.
 Holotype ♂ in NHML (see Shchedrina et al. 2017).
 Type host: Phasianus colchicus Linnaeus, 1758.
 Chilean host: Phasianus colchicus Linnaeus, 1758.
Other hosts: None.
Chilean locality: Pinto: Region XVI.
Geographic distribution: Australasia; Eurasia; North and South America.
 Chilean reference: González-Acuña et al. (2009).
 Other significant references: KÉler (1958b: 327, 331, figs 3, 32); Pilgrim & Palma (1982); Modrzejewska & Złotorzycka (1987: 665, fig. 6); Price et al. (2003); Palma (2010: 408); Palma (2017).
 Remarks: Oxylipeurus colchicus was introduced to Chile and other countries by human agency with common pheasants (Martínez-Piña & González-Cifuentes 2004: 31). Gustafsson et al. (2020: 214) listed this louse as Reticulipeurus colchicus (Clay, 1938).
  Genus Paraclisis Timmermann, 1965
 Paraclisis Timmermann, 1965. Abhandl. Verhandl. Naturwiss. Ver. Hamburg, N.F. 8 (Supplement), 96. Type species: Pediculus diomedeae J.C. Fabricius, 1775 = Paraclisis diomedeae (J.C. Fabricius, 1775) (by original designation).
 Harrisoniella KÉler, 1956: 521 (not Harrisoniella Bedford, 1930). See Clay & Hopkins (1961); I.C.Z.N. (1963).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on pages 85-86, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Localization and entanglement of two interacting electrons in a quantum-dot molecule
Creators: name: Tamborenea, P. I.
name: Metiu, H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The localization of two interacting electrons in a coupled-quantum-dots semiconductor structure is demonstrated through numerical calculations of the time evolution of the two-electron wave function including the Coulomb interaction between the electrons. The transition from the ground state to a localized state is induced by an external, time-dependent, uniform electric field. It is found that while an appropriate constant field can localize both electrons in one of the wells, oscillatory fields can induce roughly equal probabilities for both electrons to be localized in either well, generating an interesting type of localized and entangled state. We also show that shifting the field suddenly to an appropriate constant value can maintain in time both types of localization.
description: 4 pages, 4 figures
Porcine Lymphotropic Herpesviruses (PLHVs) and Xenotranplantation
Creators: name: Denner, Joachim
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: porcine lymphotropic herpesviruses
subject: xenotransplantation
subject: orcine cytomegalovirus
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::616 Krankheiten

description: Porcine lymphotropic herpesviruses -1, -2 and -3 (PLHV-1, PLHV-2 and PLHV-3) are gammaherpesviruses which are widespread in pigs. They are closely related to the Epstein–Barr virus (EBV) and Kaposi sarcoma herpesvirus, both of which cause severe diseases in humans. PLHVs are also related to bovine and ovine gammaherpesviruses, which are apathogenic in the natural host, but cause severe diseases after transmission into other species. Until now, no association between PLHVs and any pig diseases had been described. However, PLHV-1 causes a post-transplantation lymphoproliferative disorder (PTLD) after experimental transplantations in minipigs. This disorder is similar to human PTLD, a serious complication of solid human organ transplantation linked to EBV. Xenotransplantation using pig cells, tissues and organs is under development in order to alleviate the shortage of human transplants. Meanwhile, remarkable survival times of pig xenotransplants in non-human primates have been achieved. In these preclinical trials, another pig herpesvirus, the porcine cytomegalovirus (PCMV), a roseolovirus, was shown to significantly reduce the survival time of pig xenotransplants in baboons and other non-human primates. Although PLHV-1 was found in genetically modified donor pigs used in preclinical xenotransplantation, it was, in contrast to PCMV, not transmitted to the recipient. Nevertheless, it seems important to use PLHV-free donor pigs in order to achieve safe xenotransplantation.
Paraclisis diomedeae
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Paraclisis
Paraclisis diomedeae

description: Paraclisis diomedeae (J.C. Fabricius, 1775)
 Pediculus diomedeae J.C. Fabricius, 1775: 808.
 Ricinus diomedeae (Linnaeus, 1758); Latreille 1804: 107.
 Lipeurus lepturus Enderlein, 1908: 453, figs 200–202, 209.
 Esthiopterum diomedeae J.C. Fabricius, 1775 [sic]; Harrison 1916: 133.
 Perineus diomedeae (J.C. Fabricius, 1775); Clay 1940a: 299, figs, 1–2, 4a, 5a, 6a.
 Perineus diomedeae diomedeae (J.C. Fabricius, 1775); Eichler, 1949b: 340.
 Perineus diomedeae enderleini Eichler, 1949b: 342, figs 8–10.
 Perineus diomedeae (J.C. Fabricius, 1775); Hopkins & Clay 1952: 277.
 Perineus enderleini Eichler, 1949; Hopkins & Clay 1952: 277.
 Harrisoniella diomedeae (J.C. Fabricius, 1775); KÉler 1956: 522, figs 1–3a.
 Harrisoniella diomedeae (J.C. Fabricius, 1775); KÉler 1957a: 285, figs 1d, 2a, 3, 9.
 Paraclisis diomedeae (J.C. Fabricius, 1775); Timmermann 1965: 100, figs 32, 33a, 34a, 37a, 38, 39a, pl. 5: figs 1–2.
 Paraclisis diomedeae (J.C. Fabricius, 1775); Clay & Moreby 1967: 162, 168, figs 117–119, 122, 143.
 Paraclisis diomedeae (J.C. Fabricius, 1775); Palma 2017: 152.
Neotype ♂ in NHML (see Clay 1940a: 302).
 Type host: “In Brasiliae diomedeis” = Thalassarche melanophris (Temminck, 1828) (see Clay 1940a: 299).
 Chilean host: Thalassarche melanophris (Temminck, 1828).
 Other hosts: Thalassarche bulleri bulleri (Rothschild, 1893); Thalassarche bulleri platei (Reichenow, 1898); Thalassarche cauta cauta (Gould, 1841); Thalassarche cauta steadi Falla, 1933; Thalassarche chlororhynchos (Gmelin, 1789); Thalassarche chrysostoma (J.R. Forster, 1785); Thalassarche eremita Murphy, 1930; Thalassarche impavida Mathews, 1912; Thalassarche salvini (Rothschild, 1893); Phoebetria fusca (Hilsenberg, 1822); Phoebetria palpebrata (J.R. Forster, 1785).
Chilean locality: Valparaíso: Region V.
Geographic distribution: Atlantic, Pacific, Indian and Southern Ocean.
Chilean reference: Clay (1940a: 302).
 Other significant references: Clay & Hopkins (1951: 34); Timmermann (1965); Clay & Moreby (1967); Pilgrim & Palma (1982: 6–7); Palma (1996: 197); Price et al. (2003: 205); Page et al. (2004: 641, 649); Hänel & Palma (2007: 113, 126, 129); Palma (2010: 408); Palma (2017).
 Remarks: Paraclisis diomedeae is the most prevalent among all lice parasitic on small albatrosses (Thalassarche spp.) (R.L. Palma pers. observation).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 86, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Relativistic Mechanism of Chiral Magnetic Current in Weyl Semimetals with Tilted Dispersion
Creators: name: Alisultanov, Zaur Z.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The chiral magnetic effect is a one of the exotic bulk transport properties of the Weyl semimetals. Because of the Nielsen-Ninomiya "no-go theorem", the total chiral magnetic current is absent in the equilibrium state. One of the mechanisms for generating this current is the chiral anomaly. This phenomenon is the anomalous nonconservation of chiral charge for massless relativistic particles. It can be realized by parallel magnetic and electric fields, and it leads to such new transport phenomenon as the negative longitudinal magnetoresistance. Using a simple theory (we consider both linearized and lattice model), we have shown, that in Weyl metals with tilted dispersion another mechanism of the chiral magnetic current is possible. It is not associated with the chiral anomaly. The new transport mechanism is based on the relativistic effect of electric field on Landau levels. This effect is that an electric field changes the distance between the Landau levels, and also changes the effective velocity along magnetic field. At presence of a tilt in the spectrum, this velocity renormalization is differ for different Weyl points. This leads to a non-zero resulting drift velocity. As a consequence, an electrical current arises along the magnetic field. The induced by this mechanism the electric current is proportional to the pseudoscalar product of the fields and directed along the magnetic field, that differs it from the Hall current. At the same time, the conductivity corresponding to this transport mechanism does not depend on the scattering time like the Hall conductivity. Thus, we have proposed a new anomalous transport mechanism in the Weyl semimetal, which is not associated with the chiral anomaly.
Novas construções do Supereu: riso e ética da responsabilidade
Creators: name: Conturbia, Soraya
Publisher: name: Instituto de Estudos Filosóficos
Year: 2024
Subjects: Sigmund Freud
Ego
Superego
Eu
Supereu
Riso
Ética
Responsabilidade
Ética da Responsabilidade

description: Este texto tem como norte o Supereu em Freud. O campo de pesquisa vai se limitar na problemática da tensão, por vezes ruturas e/ou fendas, entre as instâncias Eu e Supereu. Este, por sua vez, é consolidado como sendo possuidor da consciência moral/crítica e em algumas situações (como no caso da melancolia) pode se tornar severo, levando o Eu para a morte. Desse modo, a proposta deste trabalho consiste em três etapas: 1) investigar como (ou responder se)o humor contribui para diminuir a tensão entre as instâncias, mitigando as ruturas ou fendas entre elas;2) realizar uma revisão de bibliografia sobre as obras de Sigmund Freud em diversos momentos de sua psicanálise referentes ao Supereu e ao humor; 3) indicar a natureza sublimatória existente no humor; 4) Por último, partindo de todo o material produzido e argumentando a favor da interlocução entre Supereu, humor e sublimação, pretende-se enquanto originalidade deste trabalho, abrir novos caminhos para se pensar o Supereu e o humor da perspetiva de uma ética da responsabilidade.
description: Depositado no PhicaRe (Philosophy & Care Repository).
Magnetization reorientation due to the superconducting transition in heavy-metal heterostructures
Creators: name: Johnsen, Lina G.
name: Banerjee, Niladri
name: Linder, Jacob
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recent theoretical and experimental work has demonstrated how the superconducting critical temperature ($T_c$) can be modified by rotating the magnetization of a single homogeneous ferromagnet proximity-coupled to the superconducting layer. This occurs when the superconductor and ferromagnet are separated by a thin heavy normal metal that provides an enhanced interfacial Rashba spin-orbit interaction. We consider the reciprocal effect: magnetization reorientation driven by the superconducting phase transition. We solve the tight-binding Bogoliubov-de Gennes equations on a lattice self-consistently and find that the relative angle between the spin-orbit field and the magnetization gives rise to a contribution in the free energy even in the normal state due to band-structure effects. For temperatures below $T_c$, superconductivity gives rise to a competing contribution. By lowering the temperature, in addition to reorientation of the favored magnetization direction from in-plane to out-of-plane, a $π/4$ in-plane rotation for thicker ferromagnetic layers is possible. Furthermore, computation of $T_c$ of the structure in the ballistic limit shows a dependence on the in-plane orientation of the magnetization, in contrast to our previous result on the diffusive limit. This finding is relevant with respect to thin-film heterostructures since these are likely to be in the ballistic regime of transport. Finally, we discuss the experimental feasibility of observing the magnetic anisotropy induced by the superconducting transition when other magnetic anisotropies, such as the shape anisotropy for a ferromagnetic film, are taken into account. Our work suggests that the superconducting condensation energy in principle can trigger a reorientation of the magnetization of a thin-film ferromagnet upon lowering the temperature below $T_c$, in particular for ferromagnets with weak magnetic anisotropies.
description: 11 pages, 10 figures
Topological supercurrents interaction and fluctuations in the multiterminal Josephson effect
Creators: name: Xie, Hong-Yi
name: Levchenko, Alex
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Josephson effect in the multiterminal junction of topological superconductors. We use the symmetry-constrained scattering matrix approach to derive band dispersions of emergent sub-gap Andreev bound states in a multidimensional parameter space of superconducting phase differences. We find distinct topologically protected band crossings that serve as monopoles of finite Berry curvature. Particularly, in a four-terminal junction the admixture of $2π$ and $4π$ periodic levels leads to the appearance of finite energy Majorana-Weyl nodes. This topological regime in the junction can be characterized by a quantized nonlocal conductance that measures the Chern number of the corresponding bands. In addition, we calculate current-phase relations, variance, and cross-correlations of topological supercurrents in multiterminal contacts and discuss the universality of these transport characteristics. At the technical level these results are obtained by integrating over the group of a circular ensemble that describes the scattering matrix of the junction. We briefly discuss our results in the context of observed fluctuations of the gate dependence of the critical current in topological planar Josephson junctions and comment on the possibility of parity measurements from the switching current distributions in multiterminal Majorana junctions.
description: 8+ pages, 6 figures
New glycosylsphingolipids from Psychotria serpens L
Creators: name: Wang, Yu-Mei
name: Wu, Ai-Zhi
name: Zhong, Ying
name: Guang-Tian Peng
name: Fan, Qian
name: Zhu, Chen-Chen
name: Zhang, Cui-Xian
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: In clinical, Psychotria serpens L. was often substitute for Caulis trachelospermi to treat cancer in China. Meanwhile, EtOAc and n-BuOH fractions of MeOH extract of P. serpens L. show power activity against H460, HepG2, Hela, and PC9/GR cell lines, and no toxic effects against normal 16HBE cell lines. In our ongoing search for bioactive novel compounds from Chinese material medica, one new type of glycosylsphingolipids Psychotramide (1a–1c) were isolated from P. serpens L., and their structures were identified through spectroscopic techniques including NMR (1D and 2D) and MS (LC-MS, and GC-MS).
Cognitive Impairment Is Associated with Absolute Intraoperative Frontal α-Band Power but Not with Baseline α-Band Power: A Pilot Study
Creators: name: Koch, Susanne
name: Feinkohl, Insa
name: Chakravarty, Sourish
name: Windmann, Victoria
name: Lichtner, Gregor
name: Pischon, Tobias
name: Brown, Emery N.
name: Spies, Claudia
name: BioCog Study Group
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2019
Subjects: subject: Aging and cognition
subject: Aging brain
subject: Clinical trials
subject: Cognitive decline
subject: Electroencephalography
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Background: Cognitive abilities decline with aging, leading to a higher risk for the development of postoperative delirium or postoperative neurocognitive disorders after general anesthesia. Since frontal alpha-band power is known to be highly correlated with cognitive function in general, we hypothesized that preoperative cognitive impairment is associated with lower baseline and intraoperative frontal alpha-band power in older adults. Methods: Patients aged >= 65 years undergoing elective surgery were included in this prospective observational study. Cognitive function was assessed on the day before surgery using six age-sensitive cognitive tests. Scores on those tests were entered into a principal component analysis to calculate a composite "g score" of global cognitive ability. Patient groups were dichotomized into a lower cognitive group (LC) reaching the lower 1/3 of "g scores" and a normal cognitive group (NC) consisting of the upper 2/3 of "g scores." Continuous pre- and intraoperative frontal electroencephalograms (EEGs) were recorded. EEG spectra were analyzed at baseline, before start of anesthesia medication, and during a stable intraoperative period. Significant differences in band power between the NC and LC groups were computed by using a frequency domain (delta 0.5-3 Hz, theta 4-7 Hz, alpha 8-12 Hz, beta 13-30 Hz)-based bootstrapping algorithm. Results: Of 38 included patients (mean age 72 years), 24 patients were in the NC group, and 14 patients had lower cognitive abilities (LC). Intraoperative alpha-band power was significantly reduced in the LC group compared to the NC group (NC -1.6 [-4.48/1.17] dB vs. LC -6.0 [-9.02/-2.64] dB), and intraoperative alpha-band power was positively correlated with "g score" (Spearman correlation: r = 0.381; p = 0.018). Baseline EEG power did not show any associations with "g." Conclusions: Preoperative cognitive impairment in older adults is associated with intraoperative absolute frontal alpha-band power, but not baseline alpha-band power.
Ornithobius pricei Arnold 2005
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Ornithobius
Ornithobius pricei

description: Ornithobius pricei Arnold, 2005
 Ornithobius pricei Arnold, 2005: 164, figs 2, 9, 18, 20.
 Ornithobius pricei Arnold, 2005; González-Acuña et al. 2010: 63.
Holotype ♂ in KCEM.
 Type host: Cygnus melancoryphus (Molina, 1782).
 Chilean host: Cygnus melancoryphus (Molina, 1782).
Other hosts: None.
Chilean locality: Concepción: Region VIII.
Geographic distribution: Southern South America.
 Chilean reference: González-Acuña et al. (2010).
Other significant references: None.
 Remarks: Records of Ornithobius bucephalus (Giebel, 1874) from Cygnus melancoryphus are the result of contaminations from Cygnus olor (Gmelin, 1789) in captivity. See Arnold (2005: 165) and González-Acuña et al. (2010: 63).
  Genus Oxylipeurus Mjo ̈berg, 1910
 Oxylipeurus Mjo ̈berg, 1910. Arkiv Zool. 6 (13), 91. Type species: Lipeurus inaequalis Piaget, 1880 = Oxylipeurus inaequalis (Piaget, 1880) (by original designation).
 Epicolinus Carriker, 1945. Rev. Bras. Entomol. 5 (1), 104. Type species: Lipeurus clavatus McGregor, 1917a = Oxylipeurus clavatus (McGregor, 1917a) (by original designation).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on pages 84-85, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Trichosordarin A, a norditerpene glycoside from the marine-derived fungus Trichoderma harzianum R5
Creators: name: Xiao-Rui Liang
name: Ma, Xin-Yue
name: Nai-Yun Ji
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Marine Biology
subject: Inorganic Chemistry

description: A new sordarin derivative, trichosordarin A (1), with a unique norditerpene aglycone was isolated from the culture of a marine-sediment-derived fungal strain, Trichoderma harzianum R5. Its structure and relative configuration were unequivocally identified by a combination of 1D/2D NMR, IR, and mass spectrometric methods. Compound 1 was assayed to be toxic to the marine zooplankton Artemia salina.
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title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: Ð¢ÑÑÐµÐ²Ð°, ÐÐ»Ð¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ðµ
Ð½Ð°ÑÑÐ½Ð°Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ñ
PR-Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ
ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð½Ð°ÑÑÐ½Ð¾-ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð² Ð¸ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ PR-Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ¸ Ð·Ð½Ð°Ð½Ð¸Ð¹ Ð² ÑÐ°Ð¼ÐºÐ°Ñ ÑÐµÑÑÐ¾Ð³Ð¾ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐºÐ»Ð°Ð´Ð°. ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° PR-Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ Ð¢ÐµÑÐ½Ð¾Ð¿Ð°ÑÐºÐ° Â«ÐÐ¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾Â» Ð¸ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð° ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð° Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ñ ÐºÐ»ÑÑÐµÐ²ÑÐ¼Ð¸ Ð°ÐºÑÐ¾ÑÐ°Ð¼Ð¸. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð¢ÐµÑÐ½Ð¾Ð¿Ð°ÑÐºÐ° Â«ÐÐ¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹Â» Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð¾Ð¼, Ð±Ð¸Ð·Ð½ÐµÑÐ¾Ð¼ Ð¸ Ð½Ð°ÑÐºÐ¾Ð¹.
Resonance-assisted tunneling in 4D normal-form Hamiltonians
Creators: name: Firmbach, Markus
name: Fritzsch, Felix
name: Ketzmerick, Roland
name: Bäcker, Arnd
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlinear resonances in the classical phase space lead to a significant enhancement of tunneling. We demonstrate that the double resonance gives rise to a complicated tunneling peak structure. Such double resonances occur in Hamiltonian systems with an at least four-dimensional phase space. To explain the tunneling peak structure, we use the universal description of single and double resonances by 4D normal-form Hamiltonians. By applying perturbative methods, we reveal the underlying mechanism of enhancement and suppression of tunneling and obtain excellent quantitative agreement. Using a minimal matrix, we obtain model an intuitive understanding.
description: 14 pages, 8 figures
Experimental Constraints on the Pairing State of the Cuprate Superconductors: an Emerging Consensus
Creators: name: Annett, James
name: Goldenfeld, Nigel
name: Leggett, Anthony
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present a critical discussion of recent experimental probes of the pairing state of the high temperature superconductors, focusing primarily, but not exclusively, on \Yba, where the best data currently exist. Penetration depth measurements near \Tc\ give no indication of an extra transition, indicating that the pairing state is a one-dimensional representation of the crystal symmetry. Penetration depth measurements at low temperatures provide strong evidence for a change in sign of the gap function over the Fermi surface. Quantum mechanical phase interference experiments generally confirm this and in addition show that the nodal positions are consistent with a \dx2y2\ pairing state. This pairing state is consistent with photoemission measurements of the gap function, Raman scattering, the effect on \Tc\ of impurities, and many other data (reviewed by two of us previously) which indicate the presence of low lying excitations in the superconducting state. We also discuss evidence that apparently does not fit in with a \dx2y2\ pairing state, and we describe possible alternative scenarios.
description: 81 pages, macro package (modified version of uiucmac.tex) included in submission, figures NOT available (but not essential)
Paraclisis obscura
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Paraclisis
Paraclisis obscura

description: Paraclisis obscura (Rudow, 1869)
 Lipeurus obscurus Rudow, 1869b: 30.
 Esthiopterum obscurum Rudow, 1870 [sic]; Harrison 1916: 139.
 Perineus obscurus Rudow, 1870 [sic]; Harrison 1937: 29.
 Perineus obscurus (Rudow, 1870); Thompson 1940a: 641.
 Perineus obscurus (Rudow, 1869); Clay 1940a: 307, figs 3d, 4d, 5c, 6d.
 Perineus obscurus (Rudow, 1869); Hopkins & Clay 1952: 278.
 Harrisoniella obscura (Rudow, 1869); KÉler 1957a: 281, figs 1a, b, c, 2b.
 Paraclisis obscura (Rudow, 1869); Timmermann 1965: 100, figs 33b, 34d, 35, 37d, 39e; pl. 5: figs 3–4. Paraclisis obscura (Rudow, 1869); Clay & Moreby 1967: 162, 168, figs 121, 123, 127, 153.
 Paraclisis obscura (Rudow, 1869); Palma 2017: 154.
Neotype ♂ in NHML (see Clay 1940a: 308).
 Type host: Macronectes giganteus (Gmelin, 1789).
 Chilean host: Macronectes giganteus (Gmelin, 1789).
 Other host: Macronectes halli Mathews, 1912.
Chilean localities: Coloso (Antofagasta): Region II; Masatierra Island (Juan Fernández Islands): Region V.
Geographic distribution: Southern Hemisphere.
Chilean references: Thompson (1940a); Clay (1940a: 308).
 Other significant references: KÉler (1957a); Timmermann (1965); Clay & Moreby (1967); Pilgrim & Palma (1982: 6); Palma (1996: 197); Price et al. (2003: 205); Page et al. (2004: 641, 649); Hänel & Palma (2007: 113, 126, 129); Palma (2010: 408); Palma (2017).
 Remarks: Paraclisis obscura is highly prevalent among the lice parasitic on giant petrels (Macronectes spp.) (R.L. Palma pers. observation). The neotype and several neoparatypes of Paraclisis obscura are from “ Chile ”, without specific localities, and held in NHML (Shchedrina et al. 2017). Coloso is a new locality record for P. obscura in Chile, based on a sample from Macronectes giganteus held in NHML (Shchedrina et al. 2017). Thompson (1940a: 641) recorded a few specimens of P. obscura from Masatierra Island without host data, citing Diomedea melanophrys as a host “open to doubt”.
  Genus Paragoniocotes Cummings, 1916
 Paragoniocotes Cummings, 1916b. Ann. Mag. Nat. Hist. (Series 8) 17, 101. Type species: Paragoniocotes gripocephalus Cummings, 1916b (by subsequent designation).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on pages 86-87, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Dynamical Symmetries in q-deformed Quantum Mechanics
Creators: name: Lorek, A.
name: Wess, J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The dynamical algebra of the q-deformed harmonic oscillator is constructed. As a result, we find the free deformed Hamiltonian as well as the Hamiltonian of the deformed oscillator as a complicated, momentum dependent interaction Hamiltonian in terms of the usual canonical variables. Furthermore we construct a well-defined algebra SU$_q$(1,1) with consistent conjugation properties and comultiplication. We obtain non lowest weight representations of this algebra.
description: 19 pages, latex, no figures
WALLABY Early Science - I. The NGC 7162 Galaxy Group
Creators: name: Reynolds, Tristan N.
name: Westmeier, Tobias
name: Staveley-Smith, Lister
name: Elagali, Ahmed
name: For, Bi-Qing
name: Kleiner, Dane
name: Koribalski, Baerbel S.
name: Lee-Waddell, Karen
name: Madrid, Juan P.
name: Popping, Attila
name: Rhee, Jonghwan
name: Whiting, Matthew
name: Wong, O. Ivy
name: Davies, Luke J. M.
name: Driver, Simon
name: Robotham, Aaron
name: Allison, James R.
name: Bekiaris, Georgios
name: Collier, Jordan D.
name: Heald, George
name: Meyer, Martin
name: Chippendale, Aaron P.
name: MacLeod, Adam
name: Voronkov, Maxim A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY) early science results from the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the NGC 7162 galaxy group. We use archival HIPASS and Australia Telescope Compact Array (ATCA) observations of this group to validate the new ASKAP data and the data reduction pipeline ASKAPsoft. We detect six galaxies in the neutral hydrogen (HI) 21-cm line, expanding the NGC 7162 group membership from four to seven galaxies. Two of the new detections are also the first HI detections of the dwarf galaxies, AM 2159-434 and GALEXASC J220338.65-431128.7, for which we have measured velocities of $cz=2558$ and $cz=2727$ km s$^{-1}$, respectively. We confirm that there is extended HI emission around NGC 7162 possibly due to past interactions in the group as indicated by the $40^{\circ}$ offset between the kinematic and morphological major axes for NGC 7162A, and its HI richness. Taking advantage of the increased resolution (factor of $\sim1.5$) of the ASKAP data over archival ATCA observations, we fit a tilted ring model and use envelope tracing to determine the galaxies' rotation curves. Using these we estimate the dynamical masses and find, as expected, high dark matter fractions of $f_{\mathrm{DM}}\sim0.81-0.95$ for all group members. The ASKAP data are publicly available.
description: 20 pages, 11 figures, accepted for publication in MNRAS
Measurements of the reaction $\bar{p}p \to ϕη$ of antiproton annihilation at rest at three hydrogen target densities
Creators: name: OBELIX Collaboration
name: Alberico, V.
name: Bertin, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The proton-antiproton annihilation at rest into the $ϕη$ final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressure of 5 mbar. The yield of this reaction in the liquid hydrogen target is smaller than in the low-pressure gas target. The branching ratios of the $ϕη$ channel were calculated on the basis of simultaneous analysis of the three data samples. The branching ratio for annihilation into $ϕη$ from the $^3S_1$ protonium state turns out to be about ten times smaller as compared to the one from the $^1P_1$ state.
description: 10 pages, 3 Postscript figures. Accepted by Physics Letters B
On the Elevation and Suppression of Star Formation within Galaxies
Creators: name: Wang, Enci
name: Lilly, Simon J.
name: Pezzulli, Gabriele
name: Matthee, Jorryt
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: To understand star formation in galaxies, we investigate the star formation rate (SFR) surface density ($Σ_{\rm SFR}$) profiles for galaxies, based on a well-defined sample of 976 star-forming MaNGA galaxies. We find that the typical $Σ_{\rm SFR}$ profiles within 1.5Re of normal SF galaxies can be well described by an exponential function for different stellar mass intervals, while the sSFR profile shows positive gradients, especially for more massive SF galaxies. This is due to the more pronounced central cores or bulges rather than the onset of a `quenching' process. While galaxies that lie significantly above (or below) the star formation main sequence (SFMS) show overall an elevation (or suppression) of $Σ_{\rm SFR}$ at all radii, this central elevation (or suppression) is more pronounced in more massive galaxies. The degree of central enhancement and suppression is quite symmetric, suggesting that both the elevation and suppression of star formation are following the same physical processes. Furthermore, we find that the dispersion in $Σ_{\rm SFR}$ within and across the population is found to be tightly correlated with the inferred gas depletion time, whether based on the stellar surface mass density or the orbital dynamical time. This suggests that we are seeing the response of a simple gas-regulator system to variations in the accretion rate. This is explored using a heuristic model that can quantitatively explain the dependence of $σ(Σ_{\rm SFR})$ on gas depletion timescale. Variations in accretion rate are progressively more damped out in regions of low star-formation efficiency leading to a reduced amplitude of variations in star-formation.
description: 24 pages, 16 figures, accepted for publication in ApJ
Tree regeneration in grazed wood pastures
Creators: name: Caceres, Yonathan
name: Pulido, Fernando
name: Moreno, Gerardo
Publisher: name: Zenodo
Year: 2017
Subjects: dehesas
montados
protectors
low-cost

description: Dehesas and Montados are very suitable for pasture production. However, livestock grazing hampers the natural regeneration of the tree layer, especially in areas with challenging soil and climate conditions. Seed predation by domestic and wild animals, abiotic stresses (drought, high summer temperatures and infertile soils), and the lack of suitable microsites for seed germination are major impediments to seedling establishment and survival. The maintenance of Iberian dehesas and montados depends on the sufficient regeneration of the trees. In many areas, however, natural regeneration does not compensate the loss of trees and the tree population is too old. To safeguard the sustainability of these pastures, it is necessary to take steps to actively support tree regeneration and ensure that sufficient number of young trees are established well before the old ones die.
In vivo Tracking of DNA for Precise Determination of the Stratum Corneum Thickness and Superficial Microbiome Using Confocal Raman Microscopy
Creators: name: Ri, Jin Song
name: Choe, Se Hyok
name: Schleusener, Johannes
name: Lademann, Jürgen
name: Choe, Chun Sik
name: Darvin, Maxim E.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2019
Subjects: subject: Corneocytes
subject: Keratinocytes
subject: Cell maturation
subject: Cell nucleus
subject: Nucleoid
subject: Bacteria
subject: Skin barrier function
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: The skin barrier function is mostly provided by the stratum corneum (SC), the uppermost layer of the epidermis. To noninvasively analyze the physiological properties of the skin barrier functionin vivo, it is important to determine the SC thickness. Confocal Raman microscopy (CRM) is widely used for this task. In the present in vivo study, a new method based on the determination of the DNA concentration profile using CRM is introduced for determining the SC thickness. The obtained SC thickness values are compared with those obtained using other CRM-based methods determining the water and lipid depth profiles. The obtained results show almost no significant differences in SC thickness for the utilized methods. Therefore, the results indicate that it is possible to calculate the SC thickness by using the DNA profile in the fingerprint region, which is comparable with the SC thickness calculated by the water depth profiles (ANOVA test p = 0.77) and the lipid depth profile (ANOVA test p = 0.74). This provides the possibility to measure the SC thickness by using the DNA profile, in case the water or lipid profile analyses are influenced by a topically applied formulation. The increase in DNA concentration in the superficial SC (0-2 μm) is related to the DNA presence in the microbiome of the skin, which was not present in the SC depth below 4 μm.
Indole fragments for the design of lead molecules against pancreatitis
Creators: name: K. V. Dileep
name: S. Ashok
name: C. Remya
name: K. Y. Dharmendra
name: Pérez-Sánchez, Horacio
name: C. Sadasivan
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Communicated by Ramaswamy H. Sarma
N- and O-Acetylated 3-Iodothyronamines Have No Metabolic or Thermogenic Effects in Male Mice
Creators: name: Gachkar, Sogol
name: Oelkrug, Rebecca
name: Herrmann, Beate
name: Scanlan, Thomas S.
name: Sun, Qian
name: Biebermann, Heike
name: Hoefig, Carolin S.
name: Schomburg, Lutz
name: Mittag, Jens
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2019
Subjects: subject: Thyronamines
subject: Thyroid hormone
subject: Metabolism
subject: Thermoregulation
subject: Body temperature
subject: Brown adipose tissue
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Introduction: Injection of 3-iodothyronamine into experimental animals profoundly affects their metabolism and body temperature. As 3-iodothyronamine is rapidly acetylated in vivo after injection, it was hypothesized that the metabolites N- or O-acetyl-3-iodothyronamines could constitute the active hormones. Methods: Adult male mice were injected once daily with one of the metabolites (5 mg/kg body weight intraperitoneally dissolved in 60% DMSO in PBS) or solvent. Metabolism was monitored by indirect calorimetry, body temperature by infrared thermography, and body composition by nuclear magnetic resonance analysis. Signaling activities in brown fat or liver were assessed by studying target gene transcription by qPCR including uncoupling protein 1 or deiodinase type 1 or 2, and Western blot. Results: The markers of metabolism, body composition, or temperature tested were similar in the mice injected with solvent and those injected with one of the acetylated 3-iodothyronamines. Conclusions: In our experimental setup, N- and O-acetyl-3-iodothyronamine do not constitute compounds contributing to the metabolic or temperature effects described for 3-iodothyronamine. The acetylation of 3-iodothyronamine observed in vivo may thus rather serve degradation and elimination purposes.
Atomic and molecular gas in IllustrisTNG galaxies at low redshift
Creators: name: Diemer, Benedikt
name: Stevens, Adam R. H.
name: Lagos, Claudia del P.
name: Calette, A. R.
name: Tacchella, Sandro
name: Hernquist, Lars
name: Marinacci, Federico
name: Nelson, Dylan
name: Pillepich, Annalisa
name: Rodriguez-Gomez, Vicente
name: Villaescusa-Navarro, Francisco
name: Vogelsberger, Mark
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have recently developed a post-processing framework to estimate the abundance of atomic and molecular hydrogen (HI and H2, respectively) in galaxies in large-volume cosmological simulations. Here we compare the HI and H2 content of IllustrisTNG galaxies to observations. We mostly restrict this comparison to $z \approx 0$ and consider six observational metrics: the overall abundance of HI and H2, their mass functions, gas fractions as a function of stellar mass, the correlation between H2 and star formation rate, the spatial distribution of gas, and the correlation between gas content and morphology. We find generally good agreement between simulations and observations, particularly for the gas fractions and the HI mass-size relation. The H2 mass correlates with star formation rate as expected, revealing an almost constant depletion time that evolves up to z = 2 as observed. However, we also discover a number of tensions with varying degrees of significance, including an overestimate of the total neutral gas abundance at z = 0 by about a factor of two and a possible excess of satellites with no or very little neutral gas. These conclusions are robust to the modelling of the HI/H2 transition. In terms of their neutral gas properties, the IllustrisTNG simulations represent an enormous improvement over the original Illustris run. All data used in this paper are publicly available as part of the IllustrisTNG data release.
description: 22 pages, 11 figures. Additional figures and link to data at http://www.benediktdiemer.com/data/hi-h2-in-illustris/
A Contemporary View on Felix Pinkus’ Concept of the Vitreous Membrane
Creators: name: Stieler, Karola
name: Vogt, Annika
name: Sterry, Wolfram
name: Haas, Norbert
name: Blume-Peytavi, Ulrike
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2019
Subjects: subject: Pinkus
subject: Vitreous membrane
subject: Basement membrane
subject: Hair follicle
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Introduction: Felix Pinkus' concept of the vitreous membrane (VM) published in 1927 describes circular folds protruding into the outer root sheath (ORS), which, in his opinion, serve as interdigitations between the outer root sheath (ORS) and the VM. This concept currently seems to have fallen into oblivion. Objective: To determine the origin and possible function of the VM in the proliferation and vascularization of the hair follicle (HF). Methods: Serial investigation of healthy skin probes with histological (hematoxylin & eosin and periodic acid-Schiff) and immunohistochemical examination (Ki67, CD56, CD8, and collagen IV) were performed. Results: Morphological variations of the VM in various HFs such as protrusions and folds, the latter unilateral, bilateral or circular, some acute-angled, were found. Similarly, protrusions of the VM into the ORS were observed, that consisted of capillary tissue together with perifollicular tissue and VM mimicking minimal variants of the dermal papilla. Conclusions: Pinkus' concept of the VM is revisited, reproduced and possible functions are proposed. Since these structures are found in a HF region with a high metabolic dynamism, they may be involved in differentiation or nutrition, or else be formed as a result of pressure arising from outgrowing hair shafts.
General Relativistic Numerical Simulation of sub-Keplerian Transonic Accretion Flows onto Rotating Black Holes: Kerr Spacetime
Creators: name: Kim, Jinho
name: Garain, Sudip K.
name: Chakrabarti, Sandip K.
name: Balsara, Dinshaw S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study time evolution of sub-Keplerian transonic accretion flows onto black holes using a general relativistic numerical simulation code. We perform simulations around the black holes having non-zero rotation. We first compare one-dimensional simulation results with theoretical results and validate the performance of our code. Next, we present results of axisymmetric, two-dimensional simulation of advective flows. In the literature, there is no solution which describes steady shock solutions in two dimensions. However, our simulations produce these centrifugal force supported steady shock waves even in presence of strong dragging of inertial frames. Since the post-shock region could be hot and upscatter photons through Comptonization, these shock would put imprints on the spectra. Thus, our solutions, which represent truly new results, could be useful to measure spins through radiation spectrum of accreting Kerr black holes.
description: Accepted for publication in MNRAS
Development and preparation of Aedes aegypti strains for the puropse of genetic population control
Creators: name: Curtis, Zoe
Publisher: name: Imperial College London
Year: 2015

description: Aedes aegypti is the primary vector of dengue fever, a disease with an estimated incidence of 390 million cases per year. Vector control methods, which are used to control the spread of this disease, are proving to be unsatisfactory at preventing the spread and increasing incidence of the disease. A novel species-specific vector control tool is currently being trialled as an alternative method to limit transmission. This method, termed self-limiting uses tetracycline repressible dominant gene constructs to elicit population suppression when transgenic mosquitoes are released into the field. This thesis examines self-limiting strain development and characterisation as well as developing a better understanding of the fitness costs and effects on released males. The lead Ae. aegypti strain, OX513A is characterised in preparation for global use while a novel male-selecting strain is taken through its initial selection criteria to determine its suitability to become a product. These two self-limiting strains are assessed to determine their fitness, as well as developing our understating of what the influential components of rearing are on released males fitness. The tetracycline analogue used to rear the transgenic strains is shown to have a significant effect on transgene suppression and population selection. Male body size is shown to significantly affect the mating competiveness of released males depending on the body size of the female being competed for. Finally novel field relevant fitness assays are developed to assess insect quality more rapidly, with a view to being used at the point of male release. In conclusion this thesis develops the understanding of self-limiting strains both in terms of phenotype and insect fitness. It highlights changes that should be made to the strain maintenance and mass production process to prevent laboratory population selection, as well as increasing the fitness and quality of the insects as they are released into the field.