1,392 research outputs found

    Sustainable Development Concerning with Mankind’s Climate Changes

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    Mankind has witnessed many outstanding weather happenings which determined radical climate changes and thus, the draught is expected further to grow. Many experts, academics and scientists all over the continents have strongly called for attention about the importance of saving the water, either for housing and industrial consumers. According to the February - 2007 UNO Report, Terra is the subject of an accelerated global heating process, firstly due to the carbon emissions. Several decades further the climate changes will continue even if, theoretically, these emissions could partly be stopped. As one of the official UNO’s institutions, the World Meteorology Organisation certified the global heating and alerts about another worrying phenomenon,namely the soil disaster.environment, climate changes, global warming, greenhouse effect, sustainable development, EU policy on the environment, climate protection

    The Geography of Non-formal Manifolds

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    We show that there exist non-formal compact oriented manifolds of dimension nn and with first Betti number b1=b0b_1=b\geq 0 if and only if n3n\geq 3 and b2b\geq 2, or n(72b)n\geq (7-2b) and 0b20\leq b\leq 2. Moreover, we present explicit examples for each one of these cases.Comment: 8 pages, one reference update

    On The Geometry of The Rotating Liquid Drop

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    Here we consider the problem of a fluid body rotating with a constant angular velocity and subjected to surface tension. Determining the equilibrium configuration of this system turns out to be equivalent to the geometrical problem of determining the surface of revolution with a prescribed mean curvature. In the simply connected case, the equilibrium surface can be parameterized explicitly via elliptic integrals of the first and second kind. Here, we present two such parameterizations of the drops and we use the second of them to study finer details of the drop surfaces such as the existence of closed geodesics

    Positive surgical margins in nephron-sparing surgery; the great unknown

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    There is a currently a general trend towards organ-preserving surgery, and urology is no exception. Specifically, nephron-sparing surgery (NSS) has gained general acceptance for T1a renal cell carcinoma (guidelines recommendations). Moreover T1b, T2 and even T3 stage tumors have been included on the nephron sparing list at some centers. An unresolved issue is that of positive surgical margins (PSM), not only their detection but also the implications for follow up and treatment. This paper highlights data available on risk factors for PSM, their clinical relevance, and possible therapeutic consequences. From the surgeon’s viewpoint, NSS is a daring and risky surgical procedure. Urological guidelines stress the importance of NSS, and thus the trend is moving in that direction. Unresolved, however, is the problem of PSM. Trifecta, MIC, and pentafecta are applicable concepts which attempt to define the optimal endpoint of NSS, but further elaboration is necessary. Specifically, research needs to focus less on the concept of definitive margins and more on their identification and avoidance. Although some studies suggest that PSMs do not influence overall survival rate, the basic idea of preserving tissue that is not cancerous leads to further medical, social, and psychological considerations

    Наркотики в Республике Молдова, медико-социальные аспекты

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    Republican Narcological Dispensary, Congresul III al Medicilor de Familie din Republica Moldova, 17–18 mai, 2012, Chişinău, Republica Moldova, Conferinţa Naţională „Maladii bronhoobstructive la copii”, consacrată profesorului universitar, doctor habilitat Victor Gheţeul, 27 aprilie, Chişinău, Republica MoldovaThe research of narcotics phenomenon in Republic of Moldova, individual and character peculiarities of addicted persons, identification of predominant stabilization cases of narcotic behavior types, the determination of medical and psycho – social rehabilitation needs of drug addicts. Previously formulated and non- standard questionnaire, 025/e form, 030-l-y form, local literature and from abroad, MH orders, Laws, Government Decisions, statistical data of MSPI Republican Narcological Dispensary. Research methods – historical, logical, statistical, mathematic, sociological and interview methods. It was systematized local and international literature concerning drugs situation. It was analyzed the mortality situation caused by drugs use on the administrative territories. And there were determined the medical and rehabilitation needs of drug addicted persons. There were evaluated the medical and psycho-social factors that influence the behaviour of drugs addicted persons. There were elaborated recommendations for intervention and assistance for drugs use prevention.Исследование ситуации наркотиков в Республике Молдова, изучение индивидуальных особенностей и характера зависимых лиц, выявление существующей стабильности форм поведения и определение принципов медицинской и психо-социальной реабилитация больных. Задачи исследования: анализ национальной и международной литературы о ситуации с наркотиками; психология развития; объем зависимых лиц и форм помощи; анализ заболеваемости на административных территориях; определение медицинских и реабилитационных потребностей лиц страдающих от наркотиков; социальная оценка факторов, которые влияют на поведение наркомана; разработка рекомендаций для вмешательства и помощи с целью предотвращения потребления наркотиков

    Unduloids and their geometry

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    summary:In this paper we consider non-compact cylinder-like surfaces called unduloids and study some aspects of their geometry. In particular, making use of a Kenmotsu-type representation of these surfaces, we derive explicit formulas for the lengths and areas of arbitrary segments, along with a formula for the volumes enclosed by them.summary:

    Slow equivariant lump dynamics on the two sphere

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    The low-energy, rotationally equivariant dynamics of n CP^1 lumps on S^2 is studied within the approximation of geodesic motion in the moduli space of static solutions. The volume and curvature properties of this moduli space are computed. By lifting the geodesic flow to the completion of an n-fold cover of the moduli space, a good understanding of nearly singular lump dynamics within this approximation is obtained.Comment: 12 pages, 3 figure
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