405 research outputs found

    Анализ маркетинговых приемов на примере томской сети универсамов "Абрикос"

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    В данной статье дано новое определение "маркетинговый прием", рассмотрена история развития российского маркетинга, проанализированы "маркетинговые приемы" на примере томской сети универсамов "Абрикос" и даны рекомендации для эффективных и экономных покупок в супермаркетах

    The first 62 AGN observed with SDSS-IV MaNGA - IV: gas excitation and star-formation rate distributions

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    We present maps of the ionized gas flux distributions, excitation, star-formation rate SFR, surface mass density ΣH+\Sigma_{H+}, and obtain total values of SFR and ionized gas masses {\it M} for 62 Active Galactic Nuclei (AGN) observed with SDSS-IV MaNGA and compare them with those of a control sample of 112 non-active galaxies. The most luminous AGN -- with L(\rm{[OIII]}\lambda 5007) \ge 3.8\times 10^{40}\,\mbox{erg}\,\mbox{s}^{-1}, and those hosted by earlier-type galaxies are dominated by Seyfert excitation within 0.2 effective radius ReR_e from the nucleus, surrounded by LINER excitation or transition regions, while the less luminous and hosted by later-type galaxies show equally frequent LINER and Seyfert excitation within 0.2Re0.2\,R_e. The extent RR of the region ionized by the AGN follows the relation RL([OIII])0.5R\propto\,L(\rm{[OIII]})^{0.5} -- as in the case of the Broad-Line Region. The SFR distribution over the region ionized by hot stars is similar for AGN and controls, while the integrated SFR -- in the range 1031010^{-3}-10\,M_\odot\,yr1^{-1} is also similar for the late-type sub-sample, but higher in the AGN for 75\% of the early-type sub-sample. We thus conclude that there is no signature of AGN quenching star formation in the body of the galaxy in our sample. We also find that 66\% of the AGN have higher ionized gas masses MM than the controls -- in the range 1053×107^5-3\times10^7\,M_\odot -- while 75\% of the AGN have higher ΣH+\Sigma_{H+} within 0.2Re0.2\,R_e than the control galaxies

    Filariasis of the Axilla in a Patient Returning from Travel Abroad: A Case Report

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    Background: The term filariasis comprises a group of parasitic infections caused by helminths belonging to different genera in the superfamily Filaroidea. The human parasites occur mainly in tropical and subtropical regions, but filariae are also found in temperate climates, where they can infect wild and domestic animals. Humans are rarely infected by these zoonotic parasites. Patients and Methods: A 55-year-old patient presented with a new-onset, subcutaneous, non-tender palpable mass in the right axilla. Ultrasonography showed a 1.3-cm, solid, singular encapsulated node. Sonography of the breast on both sides, axilla and lymphatic drainage on the left side, lymphatic drainage on the right side, and mammography on both sides were without pathological findings. The node was excised under local anesthesia as the patient refused minimal invasive biopsy. Results: On histopathological examination, the tail of a parasite of the group of filariae was found. The patient revealed that she had stayed in Africa and Malaysia for professional reasons. 6 months before the time of diagnosis, she had also suffered from a fever and poor general condition after a trip abroad. The patient was referred for further treatment to the Institute for Tropical Medicine at the University of Dusseldorf, where a treatment with ivermectin was conducted on the basis of positive staining with antibodies against filariae. Conclusion: Our case demonstrates the importance of interdisciplinary collaboration between breast center, pathology, and other specialties such as microbiology and tropical medicine

    Changes in trabecular bone, hematopoiesis and bone marrow vessels in aplastic anemia, primary osteoporosis, and old age

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    Retrospective histologic analyses of bone biopsies and of post mortem samples from normal persons of different age groups, and of bone biopsies of age- and sex-matched groups of patients with primary osteoporosis and aplastic anemia show characteristic age dependent as well as pathologic changes including atrophy of osseous trabeculae and of hematopoiesis, and changes in the sinusoidal and arterial capillary compartments. These results indicate the possible role of a microvascular defect in the pathogenesis of osteoporosis and aplastic anemia

    The first 62 AGN observed with SDSS-IV MaNGA -- III: stellar and gas kinematics

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    We investigate the effects of Active Galactic Nuclei (AGN) on the gas kinematics of their host galaxies, using MaNGA data for a sample of 62 AGN hosts and 109 control galaxies (inactive galaxies). We compare orientation of the line of nodes (kinematic Position Angle - PA) measured from the gas and stellar velocity fields for the two samples. We found that AGN hosts and control galaxies display similar kinematic PA offsets between gas and stars. However, we note that AGN have larger fractional velocity dispersion σ\sigma differences between gas and stars [σfrac=(σgasσstars)/σstars\sigma_{frac}=(\sigma_{\rm gas}-\sigma_{stars})/\sigma_{\rm stars}] when compared to their controls, as obtained from the velocity dispersion values of the central (nuclear) pixel (2.5" diameter). The AGN have a median value of σfrac\sigma_{\rm frac} of AGN=0.04_{\rm AGN}=0.04, while the the median value for the control galaxies is CTR=0.23_{\rm CTR}=-0.23. 75% of the AGN show σfrac>0.13\sigma_{frac}>-0.13, while 75% of the normal galaxies show σfrac<0.04\sigma_{\rm frac}<-0.04, thus we suggest that the parameter σfrac\sigma_{\rm frac} can be used as an indicative of AGN activity. We find a correlation between the [OIII]λ\lambda5007 luminosity and σfrac\sigma_{frac} for our sample. Our main conclusion is that the AGN already observed with MaNGA are not powerful enough to produce important outflows at galactic scales, but at 1-2 kpc scales, AGN feedback signatures are always present on their host galaxies.Comment: 19 pages, 8 figures, published in MNRA

    Efeito de gramíneas forrageiras sobre a germinação carpogênica de Sclerotinia sclerotiorum e atividade microbiana do solo.

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    O mofo branco, causado por Sclerotinia sclerotiorum (Ss), é uma doença severa que infecta várias culturas e é de difícil controle. Uma das estratégias de manejo da doença é por meio do uso de gramíneas forrageiras, visando-se a redução do inóculo do patógeno no solo. Objetivando-se avaliar o efeito de gramíneas forrageiras sobre a germinação carpogênica de Ss e atividade microbiana (AM) do solo, realizou-se este trabalho
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