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High Precision Tracking and the Measurement of B(Z Yields B B )/B(Z Yields Hadrons) With the Mark Ii at the Slc
No full textDuring the 1990 run of the Mark II at the SLC, the precision tracking system achieved a preliminary impact parameter resolution of 35.8 {plus minus} 1.3 {mu}m for high momentum tracks, which is the quadrature sum of 25 {plus minus} 5 {mu}m of intrinsic resolution smearing dominated by misalignments and other geometrical effects. A method is proposed by which this system can be used to measure B(Z {yields} b{rvec b}/B(Z {yields} hadrons)) with minimal systematic error. 6 refs., 3 figs
New or otherwise interesting lichens. IX. Four new species in the family Graphidaceae, one new combination, new records and remarks
No full textTen species of the lichen family Graphidaceae are treated in the ninth contribution to this series. Four species are new to science: Allographa cameroonensis Kalb & Schumm from Cameroon differs from A. grandis in having larger ascospores and in the lack of secondary lichen products. Allographa kuetchangiana Kalb & Schumm from Thailand differs from A. mexicana in having a permanent thalline cover of the ascomata and in having a whitish pruina on their top. Cruentotrema siamense Lücking & Kalb from Thailand differs from C. amazonum in having smaller ascomata and smaller ascospores. Ocellularia striata Kalb & Schumm from Thailand differs from O. jutaratiae in having smaller ascospores and in lacking the purplish, K+ greenish pigment which covers the remnants of the split proper exciple. Rhabdodiscus exutus (Hale) Kalb & Schumm is a new combination (Bas.: Ocellularia exuta Hale). Photographs of Allographa mexicana (Hale) Lücking & Kalb (including an isotype) show the variation of the ascomata and the differences to A. kuetchangiana. Allographa isidiata (Hale) Lücking & Kalb is reported from Ecuador, which is a new addition to the lichenobiota of this country and the second finding of this species after its description. Allographa plagiocarpa (Fée) Lücking & Kalb, before misidentified as A. mexicana, from Cartago Province is the second report of this species from Costa Rica. The chemistry of Ocellularia kohphanganensis Papong, Mangold & Lücking and the exact spelling of the specific epithet are corrected. Ocellularia macrocrocea Kalb is a new addition to the lichenobiota of Thailand where it is sometimes growing together with O. striata. The intraspecific variation of Ocellularia thelotremoides (Leight.) Hale ist discussed and the name is put on the correct place of the amended key to Thai Ocellularia species. Cochromatography of some Ocellularia species with a deep orange-yellow pigment together with a pure sample of skyrin in solvents A, B' and C showed identical Rf-values in all three solvent systems
Numerical simulation of the turbulent convective buoyant flow of sodium over a backward- facing step
No full textA forced convective and a buoyancy-aided turbulent liquid sodium flow over a
backward-facing step with a constant heat flux applied on the indented wall is simulated.
Linear eddy viscosity models are used for the Reynolds stresses. Turbulent heat fluxes are
modelled with a single gradient diffusion hypotheses with two different approaches to evaluate
the turbulent Prandtl number. Moreover, the influence of turbulence on heat transfer to sodium
is also assessed through simulations with zero turbulent thermal diffusivity. The results are
compared with DNS data from literature. The velocity and turbulent kinetic energy profiles
predicted by all models are in good agreement with the DNS data. The local Nusselt number
trend is qualitatively well captured, however, its magnitude is underestimated by all models
for the mixed convection case. For forced convection, the heat transfer is overestimated by all
heat flux models. The simulation with neglected turbulent heat transfer shows the best overall
agreement for the forced convection case. For the mixed convection best agreement is obtained
using a correlation to locally evaluate the turbulent thermal diffusivity
Adaptation of the Horton and Schumm laws for modelling the overland flow by the Geomorphologic Instantaneous Unit Hydrograph Method
No full textIn the paper the Horton and Schumm laws have been tested in the kontext of their application for spatial description of river basin water run-off. In addition the possibility of the geomorphlogical instantaneous unit hydropraph (GIUH) application for the run-off simulation has been investigated. Special attention has been paid to the interpretation of the laws and their parameters. The problem of the empirical correctness of th laws in the various physiographic conditions has been also studied. The methods of the Horton and Schumm laws parameters evaluation have been compared and some recommendations have been given having in mind the standardization needs. The studies have been based on a 13 basins in the area of the Sudetian and Carpathian mountains. The results have been compared with a recorded 22 flood waves in a 17 gauging stations
Network dynamics of HIV risk and prevention in a population-based cohort of young Black men who have sex with men – CORRIGENDUM
No full textThe order of the authors in the published article is incorrect. The authors should appear as follows:J. Schneider, B. Cornwell, A. Jonas, R. Behler, N. Lancki, B. Skaathun, L. E. Young, E. Morgan, S. Michaels, R. Duvoisin, A. S. Khanna, S. Friedman, P. Schumm, E. Laumann, for the uConnect Study TeamThe authors regret the error.</jats:p
Phaeophyscia microspora Aptroot & Schumm
No full textPhaeophyscia microspora Aptroot & Schumm (Fig. 3) Virtuelles Herbarium de Flechtengattungen Hyperphyscia, Paeophyscia, Physcia und Physconia: 193 (Schumm & Aptroot 2019). SPECIMENS EXAMINED. — Pakistan. Margalla Hills, Islamabad, 1604 m alt., on tree bark, 33°41’35”N, 73°03’50”E, 09.IV.2019, A. Ashraf, K. Habib & M. Usman, T5-02 (LAH[LAH37622]; GenBank[OQ024193]); Azad Jammu and Kashmir, District Bagh, 33.9259°N, 73.7810°E, 4734 m alt., on tree bark, 10.XI.2021, A. Naseer, B-04 (LAH[LAH37624]; GenBank[OQ073895]); Azad Jammu and Kashmir, District Bagh, 33°55’33.24”N, 73°46’51.6”E, 4734 m alt., on tree bark, 12.XI.2021, A. Naseer, B-05 (LAH[LAH37625]; GenBank[OQ073896]); Khyber Pakhtunkhwa, Kaghan Valley, Shogran, 34°64’N, 73°46’E, 2362 m alt., on bark, 24.VIII.2021, A. R. Niazi & M. Nadeem, SN-1 (LAH [LAH37618]; GenBank[OP933725]); Khyber Pakhtunkhwa, Kaghan Valley, Siri Paya, 33°71’N, 78°08’E, 3000 m alt., on tree bark, 26.VIII.2022, A. R. Niazi & M. Nadeem, BK-14 (LAH [LAH37617]; GenBank[OP933722]). CHEMISTRY. — Thallus K-, C-, KC-, P-; no lichen substance detected by TLC. HABITAT AND DISTRIBUTION. — Pakistani collections of this species are from humid to moist temperate, coniferous forest and scrub forest. The specimens were found on tree bark. The maximum daily temperature of the Himalaya region varies around 30-32°C during the summer, the average winter temperature is 4°C, while Margala Hills have an average maximum temperature of 34.3°C and minimum of 3.4°C with an average rainfall of 1200 mm per year. DESCRIPTION Thallus Foliose, epiphloeodal, rust grey to pale grey, remaining unchanged when wet, loosely attached to substratum, very variable in size, 2-4 cm in diam. Lobes Densely, dichotomously or irregularly branched, without pruina, lobe tips creamy white, flat to strongly convex, imbricate, usually upturned near the tips, 0.5-1.5 mm wide. Soralia and isidia Absent. Cortex Dark brown, paraplectenchymatous, 18-23 µm thick. Algal layer 28-34 µm thick. Photobiont cells Globose, 8-13 µm in diam. Medulla White. Lower surface Black, usually becoming pale to dark grey towards lobe tips, rhizinate. Rhizines Dense, black, simple, 1.3-2.5 mm long. Lower cortex Paraplectenchymatous, dark brown, 18-30 µm thick. Apothecia Abundant, usually present, 1.5-3 mm in diam., stipitate to very shortly stipitate, the margin entire or becoming regularly crenate, with prominent cortical hairs, epruinose or slightly pruinose. Disc Charcoal black, shiny, flat to strongly concave or sometimes convex. Margins Prominent, creamy to pale white. Epihymenium Light brown to orange, 18-24 µm. Hymenium Hyaline to creamy, 70-90 µm. Hypothecium Creamy white, 22-28 µm. Ascus Cylindrical to clavate, 45-55 ×12-14 µm. Ascospores Dark brown, ellipsoid, Physcia - type, 16-20 ×7.5-9 µm. Paraphyses Hyaline, branched and anastomosing, 1.7-2.8µm thick, wider at the apex, 3-4 µm thick. Pycnidia Not found.Published as part of Niazi, Abdul Rehman, Afshan, Najam-ul-Sehar, Naseer, Arooj, Nadeem, Muhammad, Iftikhar, Fatima, Fayyaz, Iram, Ashraf, Asma, Imtiaz, Sawera, Fatima, Shahzadi Qamar & Khalid, Abdul Nasir, 2023, A new species and a new record of the genus Phaeophyscia Moberg (Lecanorales, Physciaceae) from Pakistan supported by phenotypic and molecular phylogenetic analyses, pp. 51-59 in Cryptogamie, Mycologie 20 (4) on pages 56-57, DOI: 10.5252/cryptogamie-mycologie2023v44a4, http://zenodo.org/record/786720
Search for new resonances decaying to a or boson and a Higgs boson in the , , and channels with collisions at TeV with the ATLAS detector
No full textSee paper for full list of authors, 18 pages (plus author list + cover pages: 36 pages total), 13 figures, 1 table. Submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2015-18/International audienceA search is presented for new resonances decaying to a or boson and a Higgs boson in the , , and channels in collisions at TeV with the ATLAS detector at the Large Hadron Collider using a total integrated luminosity of 3.2 fb. The search is conducted by looking for a localized excess in the / invariant or transverse mass distribution. No significant excess is observed, and the results are interpreted in terms of constraints on a simplified model based on a phenomenological Lagrangian of heavy vector triplets
B MESON RADIATIVE EFFECTIVE NEUTRAL CURRENT ("PENGUIN") TRANSITION RATES
No full textB meson radiative effective neutral current ("penguin") decays rates, including the b → sγ and b → dγ transitions, represent one of the most powerful indirect constraints on new physics scenarios. Approaches to the measurements of the b → sγ width are presented, and the combined result is compared to its Standard-Model expectation. Various approaches to studying the b → dγ transition involve a comparison to corresponding b → sγ processes, and are presented in terms of the extracted ratio of CKM coupling parameters |Vtd/Vts|, which is precisely constrained within the context of the Standard Model by measurements of B meson mixing. The relative accuracy of experimental constraints on radiative penguin transition rates are better than ±7% for b → sγ and ±20% for b → dγ/b → sγ. The implications of the increasingly precise complementary constraint on |Vtd/Vts| that arises from the measurement radiative penguin decay widths may not yet be fully appreciated. There is significant potential for the improvement of these constraints in both the near (particularly for b → sγ) and longer terms.</jats:p
Corrections:Mobile stroke units for prehospital thrombolysis, triage, and beyond: benefits and challenges
No full textFassbender K, Grotta JC, Walter S, Grunwald IQ, Ragoschke-Schumm A, Saver JL. Mobile stroke units for prehospital thrombolysis, triage, and beyond: benefits and challenges. Lancet Neurology 2017; 16: 227–37—In figure 2 of this Review, the first two sentences of the legend should read “Non-contrast CT (A), CT angiography (B), and ASPECTS (C) done in a mobile stroke unit of a 73-year-old woman with acute right hemiparesis. Although the parenchyma shows no signs of infarction (ASPECTS 10), CT angiography allowed prehospital diagnosis of an occlusion of the left middle cerebral artery (B, arrow)”. This correction has been made to the online version as of Feb 15, 2017
Impacto das grandes enchentes na estrutura fundiária da planície aluvial do Rio Paraná, na Argentina
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.Nesta pesquisa se propõe mostrar o impacto das grandes enchentes na estrutura fundiária das ilhas que compõem a planície aluvial do rio Paraná (Argentina). Estabeleceram-se procedimentos cartográficos para dimensionar os processos de erosão e sedimentação acontecidos em diferentes datas temporais, estimar a superfície de afetação e tempo de permanência de diferentes níveis hidrométricos e caracterizar a dinâmica geométrica dos processos de erosão e sedimentação. Dos resultados obtidos se pode especificar que as grandes enchentes afetam em diferente grau e forma à estrutura fundiária (nas margens e parte internas das ilhas), porém, em determinadas situações os períodos de caudais baixos podem produzir grandes modificações. A superfície das ilhas é afetada em diferente percentagem (muito variável) segundo a altura dos níveis hidrométricos. Uma maior ou menor capacidade hidrosedimentológica dos cursos determina uma maior ou menor dinâmica e evolução nas planícies aluviais, que influem na informação disponível na base de dados gráfica e numérica cadastrais. The purpose of this research project is to show the impact major floods have on the plat parcels located in the islands forming the Paraná River alluvial plain. Cartographic procedures were set in order to ascertain the erosion and sedimentation processes produced during different periods of time, estimate the affected area and the time of persistence for various hydrometric levels, and characterize the geometric dynamics of the erosion and sedimentation processes. After results had been reached, we were able to determine that the major floodings affect the plat parcels at different levels and in several ways (along the river banks and the inner portions of the islands), and we also confirmed that under certain conditions, during low river flow seasons, important modifications may occur. At the same time, the land of the islands is affected at different, very variable rates, according to the height of hydrometric levels. The higher or lower levels of the hydrosedimentologic capacity of the rivers determine higher or lower alluvial plain dynamics and evolution which impact on the information available in the graphic and numeric plats database
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