نتایج جستجو برای: drf
تعداد نتایج: 359 فیلتر نتایج به سال:
An interactive system coupling the Beijing Climate Center atmospheric general circulation model (BCC_AGCM2.0.1) and the Canadian Aerosol Module (CAM) with updated aerosol emission sources was developed to investigate the global distributions of optical properties and direct radiative forcing (DRF) of typical aerosols and their impacts on East Asian climate. The simulated total aerosol optical d...
When students present writing tasks that require higher order thinking skills to work, one of the most important problems is scoring these objectively. The fact raters give scores below or above their performance based on several environmental factors affects consistency measurements. Inconsistencies in negatively affect validity and reliability student cause obtained be questioned. In regard m...
Davari, M. 2017. Advances Towards Data-Race-Free Cache Coherence Through Data Classification. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1521. 64 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9925-9. Providing a consistent view of the shared memory based on precise and well-defined semantics —memory consistency model—has be...
In this paper, we study how to optimally provide isolation guarantees in multi-resource environments, such as public clouds, where a tenant’s demands on different resources (links) are correlated. Unlike prior work such as Dominant Resource Fairness (DRF) that assumes static and fixed demands, we consider elastic demands. Our approach generalizes canonical max-min fairness to the multi-resource...
Various authors have documented wrist ligament injuries in patients with distal radius fractures (DRFs). We conducted a study to determine whether scapholunate interosseous ligament (SLIL), triangular fibrocartilage complex (TFCC), or chondral injuries directly assessed with arthroscopy predict DRF outcomes. Forty-two patients who underwent open reduction and internal fixation of DRFs were enro...
Two commercially available (EP, Z) and eight new elastomeric composites (M1-M4, G1-G4, of thickness ≈1 mm) containing mixtures of differing proportions of heavy metal additives (Bi, W, Gd and Sb) have been synthesised and examined as protective shields. The intensity of the X-ray fluorescence radiation generated in the typical elastomeric shields for CT, containing Bi and other heavy metal addi...
Background: Previous investigations have revealed, cimetidine, a histamine H2-receptor antagonist, show radioprotective effects against gammaand neutron-induced micronuclei in bone marrow erythrocytes. In this study, the anticlastogenic effects of famotidine and ranitidine, which act similar to cimetidine as histamine H2-receptor antagonists, was investigated. Materials and Methods: Balb/c male...
The direct radiative effect (DRE) of aerosols, which is the instantaneous radiative impact of all atmospheric particles on the Earth’s energy balance, is sometimes confused with the direct radiative forcing (DRF), which is the change in DRE from pre-industrial to present-day (not including climate feedbacks). In this study we couple a global chemical transport model (GEOS-Chem) with a radiative...
The impact of historical land use change from 1850 to 2000 on secondary particulate matter and ozone
Anthropogenic land use change (LUC) since preindustrial (1850) has altered the vegetation distribution and density around the world. We use a global model (GEOSChem) to assess the attendant changes in surface air quality and the direct radiative forcing (DRF). We focus our analysis on secondary particulate matter and tropospheric ozone formation. The general trend of expansion of managed ecosys...
Between a group of non sulphydryl radioprotectors (methanol, formaldehyde, acetaldehyde, formiate, acetate, ethanol and tryptophan) ; ethanol and tryptophan were selected because its high protector action on irradiated purine and pyrimidine bases. At molarities of the order of 10~4 for tryptophan-ethanol and bases and DNA the respective DRF values were: for guanine: 20.58; for adenine: 3.75; fo...
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