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  • 1
    In: BMC Microbiology, 2014, Vol.14, p.122-122
    Description: In this published article [1], a couple of typos in Table ​Table22 were found:
    Keywords: Correction
    E-ISSN: 1471-2180
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  • 2
    Language: English
    In: Forests, 01 September 2017, Vol.8(10), p.358
    Description: Forest harvesting removes and redistributes nutrients through felling and forwarding. Substantial quantities of nutrients can accumulate in brash mats on permanent skid trails, but their availability and uptake after multiple thinnings on soils susceptible to leaching are unknown. In this study, we modeled the deposition of base cations and phosphorus on a permanent skid trail after five thinnings of a Picea abies (L.) Karst. stand, and measured the resulting nutrient stocks in both the forest floor and mineral soil. An estimated 35%, 44%, 41%, and 61% of harvested Ca, K, Mg, and P, respectively, were redistributed to the skid trail. Of those deposited stocks, 32–65% of nutrients remained in decomposed brash material on the skid trail. Mineral soil stocks for Ca, K, and P were significantly higher in the skid trail than in the stand, which included minor increases in bioavailable pools. Skid trail root densities were not lower than the stand while bulk densities were only partially higher. Both would not limit nutrient uptake. There were no significant relations between needle nutrient concentrations and distance to the skid trail. Altogether, these results indicate that nutrient uptake from the skid trail was minimal despite their accumulation, chemical availability, and physical accessibility. This suggests that other factors such as liming and frequent thinning disturbances can repress uptake of available nutrients on skid trails.
    Keywords: Soil Management ; Picea Abies ; Brash Mats ; Needle Nutrition ; Whole-Tree Harvesting ; Liming ; Forestry
    E-ISSN: 1999-4907
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  • 3
    Language: English
    In: BMC microbiology, 19 September 2013, Vol.13, pp.211
    Description: Helicobacter pylori has diverged in parallel to its human host, leading to distinct phylogeographic populations. Recent evidence suggests that in the current human mixing in Latin America, European H. pylori (hpEurope) are increasingly dominant at the expense of Amerindian haplotypes (hspAmerind). This phenomenon might occur via DNA recombination, modulated by restriction-modification systems (RMS), in which differences in cognate recognition sites (CRS) and in active methylases will determine direction and frequency of gene flow. We hypothesized that genomes from hspAmerind strains that evolved from a small founder population have lost CRS for RMS and active methylases, promoting hpEurope's DNA invasion. We determined the observed and expected frequencies of CRS for RMS in DNA from 7 H. pylori whole genomes and 110 multilocus sequences. We also measured the number of active methylases by resistance to in vitro digestion by 16 restriction enzymes of genomic DNA from 9 hpEurope and 9 hspAmerind strains, and determined the direction of DNA uptake in co-culture experiments of hspAmerind and hpEurope strains. Most of the CRS were underrepresented with consistency between whole genomes and multilocus sequences. Although neither the frequency of CRS nor the number of active methylases differ among the bacterial populations (average 8.6 ± 2.6), hspAmerind strains had a restriction profile distinct from that in hpEurope strains, with 15 recognition sites accounting for the differences. Amerindians strains also exhibited higher transformation rates than European strains, and were more susceptible to be subverted by larger DNA hpEurope-fragments than vice versa. The geographical variation in the pattern of CRS provides evidence for ancestral differences in RMS representation and function, and the transformation findings support the hypothesis of Europeanization of the Amerindian strains in Latin America via DNA recombination.
    Keywords: DNA Restriction-Modification Enzymes ; Phylogeography ; Helicobacter Infections -- Microbiology ; Helicobacter Pylori -- Genetics
    E-ISSN: 1471-2180
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  • 4
    In: Zeitschrift für Bankrecht und Bankwirtschaft, 01/1/2006, Vol.18(1)
    ISSN: 0936-2800
    E-ISSN: 2199-1715
    Source: CrossRef
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  • 5
    Book
    Book
    Tübingen: M. Niemeyer
    Description: vii, 145 p.
    Description: Errata sheet, along with 2 new pages, inserted
    Description: A revised and shortened version of the author's thesis (doctoral--Freie Universität Berlin, 1982.)
    Description: Bibliography: p. 132-145
    Keywords: Mass Media And Literature ; Criticism ; Mass Media
    ISBN: 3484340134
    ISBN: 9783484340138
    Source: HathiTrust
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  • 6
    Language: English
    In: Kidney International, 02 December 2012, Vol.82(12), pp.1343-1344
    Keywords: Medicine
    ISSN: 0085-2538
    E-ISSN: 1523-1755
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  • 7
    Language: English
    In: International Journal of Cardiology, 15 November 2018, Vol.271, pp.281-288
    Description: Sleep disordered breathing (SDB) is highly prevalent in patients with atrial fibrillation, heart failure and hypertension and is associated with increased risk of mortality, cardiovascular (CV) events and arrhythmias. Current assessment of the severity of SDB is mainly based on the apnea-hypopnea index (AHI) representing the number of hypopneas and apneas per hour of sleep. However, this event-based parameter alone may not sufficiently reflect the complex pathophysiological mechanisms underlying SDB potentially contributing to CV outcome risk. In this review article, we highlight important limitations and pitfalls of current assessment, quantification and interpretation of SDB-severity in patients with CV disease and will discuss pathophysiological considerations from preclinical and clinical mechanistic studies and possible clinical implications.
    Keywords: Sleep Disordered Breathing ; Atrial Fibrillation ; Arrhythmias ; Hypoxia ; Sleep Apnea ; Heart Failure ; Medicine
    ISSN: 0167-5273
    E-ISSN: 1874-1754
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  • 8
    Language: English
    In: The Journal of infectious diseases, 01 June 2014, Vol.209(11), pp.1715-25
    Description: The Influenza Incidence Surveillance Project (IISP) monitored outpatient acute respiratory infection (ARI; defined as the presence of ≥ 2 respiratory symptoms not meeting ILI criteria) and influenza-like illness (ILI) to determine the incidence and contribution of associated viral etiologies. From August 2010 through July 2011, 57 outpatient healthcare providers in 12 US sites reported weekly the number of visits for ILI and ARI and collected respiratory specimens on a subset for viral testing. The incidence was estimated using the number of patients in the practice as the denominator, and the virus-specific incidence of clinic visits was extrapolated from the proportion of patients testing positive. The age-adjusted cumulative incidence of outpatient visits for ARI and ILI combined was 95/1000 persons, with a viral etiology identified in 58% of specimens. Most frequently detected were rhinoviruses/enteroviruses (RV/EV) (21%) and influenza viruses (21%); the resulting extrapolated incidence of outpatient visits was 20 and 19/1000 persons respectively. The incidence of influenza virus-associated clinic visits was highest among patients aged 2-17 years, whereas other viruses had varied patterns among age groups. The IISP provides a unique opportunity to estimate the outpatient respiratory illness burden by etiology. Influenza virus infection and RV/EV infection(s) represent a substantial burden of respiratory disease in the US outpatient setting, particularly among children.
    Keywords: Acute Respiratory Illness ; Epidemiology ; Influenza ; Influenza-Like Illness ; Respiratory Virus ; Seasonality ; Population Surveillance ; Influenza, Human -- Epidemiology ; Respiratory Tract Infections -- Virology
    ISSN: 00221899
    E-ISSN: 1537-6613
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  • 9
    Language: English
    In: Applied Physics Letters, 20 July 2015, Vol.107(3)
    Description: Effects of residual C impurities and Ga vacancies on the dynamic instabilities of AlN/AlGaN/GaN metal insulator semiconductor high electron mobility transistors are investigated. Secondary ion mass spectroscopy, positron annihilation spectroscopy, and steady state and time-resolved photoluminescence (PL) measurements have been performed in conjunction with electrical characterization and current transient analyses. The correlation between yellow luminescence (YL), C- and Ga vacancy concentrations is investigated. Time-resolved PL indicating the C{sub N} O{sub N} complex as the main source of the YL, while Ga vacancies or related complexes with C seem not to play a major role. The device dynamic performance is found to be significantly dependent on the C concentration close to the channel of the transistor. Additionally, the magnitude of the YL is found to be in agreement with the threshold voltage shift and with the on-resistance degradation. Trap analysis of the GaN buffer shows an apparent activation energy of ∼0.8 eV for all samples, pointing to a common dominating trapping process and that the growth parameters affect solely the density of trap centres. It is inferred that the trapping process is likely to be directly related to C based defects.
    Keywords: Condensed Matter Physics, Superconductivity And Superfluidity ; Classical And Quantum Mechanics, General Physics ; Activation Energy ; Aluminium Nitrides ; Annihilation ; Carbon ; Concentration Ratio ; Defects ; Electron Mobility ; Ev Range ; Gallium ; Gallium Nitrides ; Ion Microprobe Analysis ; Mass Spectroscopy ; Nitrogen Complexes ; Photoluminescence ; Positrons ; Semiconductor Materials ; Steady-State Conditions ; Transistors ; Trapping ; Vacancies ; Engineering ; Physics
    ISSN: 0003-6951
    E-ISSN: 1077-3118
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  • 10
    Description: (Abridged) We aim to determine the degrees of CO depletion, deuterium fractionation, and ionisation in a sample of seven massive clumps associated with IRDCs. The APEX telescope was used to observe the C17O(2-1), H13CO+(3-2), DCO+(3-2), N2H+(3-2), and N2D+(3-2) transitions towards the clumps. The CO molecules do not appear to be significantly depleted in the observed clumps. The DCO+/HCO+ and N2D+/N2H+ column density ratios are about 0.0002-0.014 and 0.002-0.028, respectively. The former ratio is found to decrease as a function of gas kinetic temperature. A simple chemical analysis suggests that the lower limit to the ionisation degree is in the range x(e)~10^{-8}-10^{-7}, whereas the estimated upper limits range from a few 10^{-6} up to ~10^{-4}. Lower limits to x(e) imply the cosmic-ray ionisation rate of H2 to lie between zeta_H2~10^{-17}-10^{-15} s^{-1}. These are the first estimates of x(e) and zeta_H2 towards massive IRDCs reported so far. The finding that CO is not depleted in the observed sources conforms to the fact that they show evidence of star formation activity which is believed to release CO from the icy grain mantles back into the gas phase. The observed degree of deuteration is lower than in low-mass starless cores and protostellar envelopes. Decreasing deuteration with increasing temperature is likely to reflect the clump evolution. On the other hand, the association with young high-mass stars could enhance zeta_H2 and x(e) above the levels usually found in low-mass star-forming regions. On the scale probed by our observations, ambipolar diffusion cannot be a main driver of clump evolution unless it occurs on timescales 〉〉10^6 yr. Comment: 23 pages, 9 figures, 10 tables; accepted for publication in A&A
    Keywords: Astrophysics - Astrophysics Of Galaxies
    ISSN: 00046361
    E-ISSN: 14320746
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