Evolution of magnetic Dirac bosons in a honeycomb lattice

We examine the presence and evolution of magnetic Dirac nodes in the Heisenberg honeycomb lattice. Using linear spin theory, we evaluate the collinear phase diagram as well as the change in the spin dynamics with various exchange interactions. We show that the ferromagnetic structure produces bosonic Dirac and Weyl points due to the competition between superexchange interactions. Furthermore, it is shown that the criteria for magnetic Dirac nodes are coupled to the magnetic structure and not the overall crystal symmetry, where the breaking of inversion symmetry greatly affects the antiferromagnetic configurations. The tunability of the nodal points through variation of the exchange parameters leads to the possibility of controlling Dirac symmetries through an external manipulation of the orbital interactions.Comment: 9 pages, 7 figures, Submitted for publicatio

Iron metabolism and diagnostic of iron deficiency in inflammatory bowel diseases.

According to WHO data about 2 billion people in the world suffer from anemia, that is 1/3 of the whole population of the planet. Causes of anemic states are varied and often they complement each other, iron deficiency anemia (IDA) which occurs in 75-80% of cases is of the greatest significance among anemias of different origins. Anaemia is a frequent systemic manifestation of inflammatory bowel diseases (IBD) which significantly worsens quality of life, it is associated with disease severity and resistance to therapy. The article highlights pathogenesis and diagnosis of anaemia in IBD patients based on current understanding of iron homeostasis in chronic inflammation. 69 anemic patients with IBD compared to with 30 patients with normal Hb level were under investigation. The control group consisted of 15 healthy individuals. The examination included total blood count, parameters of iron metabolism (serum iron, unsaturated and total iron binding capacity, trasferrin saturation, ferritin), as well as hepcidin-25 level and erythropoetin in serum. Depending on sTfR/log ferritin index the patients were divided into groups:  44% with IDA, 34 % – anemia of chronic disease (ACD) and 22 % – combination of IDA and ACD. A significant decrease of hepcidine-25 level in serum of IDA patients and increase of that one against inflammatory process in patients with ACD and ACD+IDA was found being. An increase of erythropoetin production was established in anemic patients, less expressed on ACD background

Is the ground state of Yang-Mills theory Coulombic?

We study trial states modelling the heavy quark-antiquark ground state in SU(2) Yang-Mills theory. A state describing the flux tube between quarks as a thin string of glue is found to be a poor description of the continuum ground state; the infinitesimal thickness of the string leads to UV artifacts which suppress the overlap with the ground state. Contrastingly, a state which surrounds the quarks with non-abelian Coulomb fields is found to have a good overlap with the ground state for all charge separations. In fact, the overlap increases as the lattice regulator is removed. This opens up the possibility that the Coulomb state is the true ground state in the continuum limit.Comment: 10 pages, 9 .eps figure

NATURAL, HISTORICAL AND CULTURAL BRANDS OF PAVLOGRAD REGION

In the conditions of a competitive struggle between cities, regions and countries, the problem of reproducing a unique and attractive image of the territory is actualized. Ukrainian cities have a unique cultural and creative potential, which is expressed in tangible and intangible objects of historical and cultural heritage, natural-geographical and geocultural characteristics, and in turn are a powerful resource for creating a kind of «face» of the Ukrainian city. There is a close relationship between culture and brand. The brand of any territory is a symbolic embodiment of the city in the eyes of the target audience. The brand of the city is necessary for the construction of the national brand, the cultural and historical heritage of the territory is extremely important. Material and spiritual values accumulated and preserved by generations create the basis for development, as well as positioning the city as a cultural and historical object in the geocultural space

Key exchange with the help of a public ledger

Blockchains and other public ledger structures promise a new way to create globally consistent event logs and other records. We make use of this consistency property to detect and prevent man-in-the-middle attacks in a key exchange such as Diffie-Hellman or ECDH. Essentially, the MitM attack creates an inconsistency in the world views of the two honest parties, and they can detect it with the help of the ledger. Thus, there is no need for prior knowledge or trusted third parties apart from the distributed ledger. To prevent impersonation attacks, we require user interaction. It appears that, in some applications, the required user interaction is reduced in comparison to other user-assisted key-exchange protocols

РОЛЬ ПЕРВИННОЇ ЛАНКИ У ПРОФІЛАКТИЦІ АРТЕРІАЛЬНОЇ ГІПЕРТЕНЗІЇ СЕРЕД ДОРОСЛОГО НАСЕЛЕННЯ

Вступ. Як відомо, артеріальна гіпертензія (АГ) у структурі загальної захворюваності та смертності займає одне з провідних місць.На АГ хворіє близько 25 % дорослого населення світу, поширеність АГ серед населення у світі, за прогнозами, у 2025 р. зросте до 1,5 млрд осіб(ВООЗ). В Україні налічують майже 12 млн осіб із АГ, що становить близько 30 % дорослого населення. Окрім тяжких ускладнень з боку серцевосудинної, сечовидільної систем, гіпертензія є супутньою патологією при ожирінні, цукровому діабеті, атеросклерозі

Ethics in Kakadu (1988): Finding Djilile’s “True Tracks”

Tasmanian-born Peter Sculthorpe (1929 – 2014) was one of Australia’s most iconic modernist classical composers of the twentieth century. Kakadu (1988) seems to have sparked the most controversy of Sculthorpe’s works and has become one of his most well-known pieces. In the program notes provided in the score’s foreword, Sculthorpe asserts that “the melodic material in Kakadu, as in much of my recent music, was suggested by the contours and rhythms of Aboriginal chant.” Sculthorpe attributed this melodic material to the Arnem Land chant, Djilile. Consequently, Sculthorpe has been criticized for extracting Djilile from its authentic context as an act of musical appropriation. The published arguments through Australian musicologists and composers such as Jonathan Paget, Amanda Harris, and Anne Boyd have analyzed the issue in terms of creative license. These arguments have also incorporated value judgments of Sculthorpe’s ethics and persona to underscore their reasoning. The purpose of this project is to complicate the discussion of Djililein Sculthorpe’s music by situating its usage within Indigenous Australian copyright lawyer Dr. Terri Janke’s True Tracks: Respecting Indigenous Knowledge and Culture (2021) model and framework for respectful cultural exchange. The previous defenses of Sculthorpe’s work need to be re-examined in order to fit a more modern standard of respectful cultural interaction

History of Foot Ulcer Increases Mortality Among Individuals With Diabetes: Ten-year follow-up of the Nord-Trøndelag Health Study, Norway

OBJECTIVE To compare mortality rates for individuals with diabetes with and without a history of foot ulcer (HFU) and with that for the nondiabetic population. RESEARCH DESIGN AND METHODS This population-based study included 155 diabetic individuals with an HFU, 1,339 diabetic individuals without an HFU, and 63,632 nondiabetic individuals who were all followed for 10 years with mortality as the end point. RESULTS During the follow-up period, a total of 49.0% of diabetic individuals with an HFU died, compared with 35.2% of diabetic individuals without an HFU and 10.5% of those without diabetes. In Cox regression analyses adjusted for age, sex, education, current smoking, and waist circumference, having an HFU was associated with more than a twofold (2.29 [95% CI 1.82–2.88]) hazard risk for mortality compared with that of the nondiabetic group. In corresponding analyses comparing diabetic individuals with and without an HFU, an HFU was associated with 47% increased mortality (1.47 [1.14–1.89]). Significant covariates were older age, male sex, and current smoking. After inclusion of A1C, insulin use, microalbuminuria, cardiovascular disease, and depression scores in the model, each was significantly related to life expectancy. CONCLUSIONS AN HFU increased mortality risk among community-dwelling adults and elderly individuals with diabetes. The excess risk persisted after adjustment for comorbidity and depression scores, indicating that close clinical monitoring might be warranted among individuals with an HFU, who may be particularly vulnerable to adverse outcomes. Hospital-based studies have shown that mortality rates in individuals with diabetic foot ulcers are about twice those observed in individuals with diabetes without foot ulcers (1,2). A diabetic foot ulcer reflects the presence of underlying pathological conditions, and the risk of recurrent ulcers is high (3,4). It has been suggested that the elevated mortality rate among individuals with diabetic foot ulcers is related to comorbid disease such as cardiovascular disease and nephropathy (5) or to psychological factors including depression (6). Although the mortality rate in individuals with diabetes is high, no large population-based studies have examined the impact on mortality of a history of foot ulcers (HFU) among individuals with diabetes. The purpose of this study was to compare mortality rates for individuals with diabetes reporting an HFU with those for individuals without an HFU and the nondiabetic population. These issues were investigated in the Nord-Trøndelag Health Study (HUNT 2), which includes a very large population-based sample of men and women from a well-defined geographic area. Participants with self-reported diabetes were well characterized with regard to their diabetes, and information on demographics, lifestyle, and prevalent disease including depression was available

Energy-entropy study of projected space-like monopoles in finite-T quenched SU(2) QCD

Properties of space-like monopoles projected on the 3D space in finite temperature quenched SU(2) QCD are studied. The monopole energy is derived from the effective action of the monopoles which is determined by an inverse Monte-Carlo method. Then the entropy is fixed with the help of the monopole-loop distribution.Comment: 3 pages, 6 figures, uses espcrc2.sty; Lattice2003(topology