351 research outputs found

    Features of damage to the ribs by a blade with a defective tip

    Get PDF
    Stab wounds are a common injury in the practice of a forensic pathologist. Such damage often occurs in domestic conditions, for example, in the kitchen during a quarrel, where knives are always at hand. The young, able-bodied portions of the population are frequent victims, which makes the problem socially significant. Knives that have been used for a long time are rarely in perfect condition; operational defects occur on them. For example, repeated sharpening results in the rounding of the tip of the blade. Moreover, during operation, the tip of the blade can bend or even break off. However, before studying the effects of such blades on flat bones, studying the history of this issue, to familiarize with the work of other scientists, is necessary. In the literature review, authors of studies on stab-cut injuries focused more on damage to the skin and clothing. Morphological features of skeletal bone injuries and the possibility of identification studies on them until the XXI century were described poorly. To improve the forensic medical diagnosis of rib injuries caused by blades with point defects based on the study of a complex of morphological features, experimental studies on cadaveric materials are necessary

    The Karakul depression in Pamirs: The first impact structure in Central Asia

    Get PDF
    The Karakul depression was picked out as the possible impact structure by the study of space images of Tadjikistan. Its striking similarity with some complex impact craters such as Dellen and Gosses Bluff is evident. Our investigations of the Karakul depression in 1987 and 1989-1991 years allowed to determine it as the impact crater with the central uplift. The target of the crater is presented by slightly metamorphosed sedimentary rocks of Paleozoic, intensively folded and intruded with granites during the Gercynian orogeny. The modern structure of north-eastern Pamirs was formed by Alpinian orogeny; the raise of the area in Neogene was about 4000-7000 m

    8He Spectroscopy in Stopped Pion Absorption By 9Be

    Get PDF
    Level structure of 8He has been studied in the reaction of stopped pion absorption by 9Be nuclei. The missing mass spectrum in the range 0 MeV ≤ MM ≤ 10 MeV has been described by the superposition of phase-space distributions and the three states of 8He. Parameters of these states have been compared with data of other experimental and theoretical works

    Imprecise inference for warranty contract analysis

    Get PDF
    a b s t r a c t This paper presents an investigation into generalised Bayesian analysis of warranty contracts, using sets of prior distributions within the theory of imprecise probability. Explicit expressions are derived for optimal lower and upper bounds for the expected profit for the manufacturer of a product, corresponding to an imprecise negative binomial model for which two sets of prior distributions are studied. The results can be used to set a maximum value of compensation such that the manufacturer's expected profit remains positive, under vague prior knowledge

    Fractional Systems and Fractional Bogoliubov Hierarchy Equations

    Full text link
    We consider the fractional generalizations of the phase volume, volume element and Poisson brackets. These generalizations lead us to the fractional analog of the phase space. We consider systems on this fractional phase space and fractional analogs of the Hamilton equations. The fractional generalization of the average value is suggested. The fractional analogs of the Bogoliubov hierarchy equations are derived from the fractional Liouville equation. We define the fractional reduced distribution functions. The fractional analog of the Vlasov equation and the Debye radius are considered.Comment: 12 page

    Experimenting an optical second with strontium lattice clocks

    Full text link
    Progress in realizing the SI second had multiple technological impacts and enabled to further constraint theoretical models in fundamental physics. Caesium microwave fountains, realizing best the second according to its current definition with a relative uncertainty of 2-4x10^(-16), have already been superseded by atomic clocks referenced to an optical transition, both more stable and more accurate. Are we ready for a new definition of the second? Here we present an important step in this direction: our system of five clocks connects with an unprecedented consistency the optical and the microwave worlds. For the first time, two state-of-the-art strontium optical lattice clocks are proven to agree within their accuracy budget, with a total uncertainty of 1.6x10^(-16). Their comparison with three independent caesium fountains shows a degree of reproducibility henceforth solely limited at the level of 3.1x10^(-16) by the best realizations of the microwave-defined second.Comment: 9 pages, 4 figures, 2 table

    Imprecise inference for warranty contract analysis

    Get PDF
    Abstract This paper presents an investigation into generalized Bayesian analysis of warranty contracts, using sets of prior distributions within the theory of imprecise probability. Explicit expressions are derived for optimal lower and upper bounds for the expected pro…t for the manufacturer of a product, corresponding to an imprecise negative binomial model for which two sets of prior distributions are studied. The results can be used to set a maximum value of compensation such that the manufacturer's expected pro…t remains positive, under vague prior knowledge

    Spectroscopy of Helium Isotope 6He

    Get PDF
    The excited states of heavy helium isotope 6He were studied in stopped pion absorption in the reactions 9Be
    corecore