DETERMINATION OF OPTIMIZATION WAYS OF RE-PROTHESIS USING VARIOUS SCHEMES GNATHOLOGICAL SUPPORT OF PATIENTS AT THE PREPARATORY STAGE TO THE ORTHOPEDIC CORRECTION OF PATIENTS WITH OCCLUSIVE IATROGENIC DISORDERS OF TOOTH-JAW APPARATUS

We brought to the light that one of the the most controversial issues is the moment of adaptation to reconstructive procedures. Often it becomes unclear which and in which order to use medical diagnostic equipment, to training for fixed prosthetic stages. Our studies make it possible to predict not only the treatment time, but the amount of occlusal adjustment in conjunction with the reconstruction of the position of the mandible.One of the most debated issues is the time of adaptation to reconstructive manipulation. Often it becomes unclear how and in what order medical diagnostic equipment should be used in the preparatory stages of the stationary prosthetics. Our studies make it possible to predict not only the treatment time, and the amount of occlusal adjustment in conjunction with the reconstruction of the lower jaw. Keywords: tooth-jaw apparatus, temporomandibular joint, violation functional occlusion, dental surgery, medical diagnostic devices, muscle disorders, adaptation, occlusal splint, occlusal adjustment, chewing muscles, provisional design

The origin of paramagnetic magnetization in field-cooled YBa2Cu3O7 films

Temperature dependences of the magnetic moment have been measured in YBa_2Cu_3O_{7-\delta} thin films over a wide magnetic field range (5 <= H <= 10^4 Oe). In these films a paramagnetic signal known as the paramagnetic Meissner effect has been observed. The experimental data in the films, which have strong pinning and high critical current densities (J_c ~ 2 \times 10^6 A/cm^2 at 77 K), are quantitatively shown to be highly consistent with the theoretical model proposed by Koshelev and Larkin [Phys. Rev. B 52, 13559 (1995)]. This finding indicates that the origin of the paramagnetic effect is ultimately associated with nucleation and inhomogeneous spatial redistribution of magnetic vortices in a sample which is cooled down in a magnetic field. It is also shown that the distribution of vortices is extremely sensitive to the interplay of film properties and the real experimental conditions of the measurements.Comment: RevTex, 8 figure

Функціональний стан м’язів зубощелепного апарату до та після лікування дітей з аномаліями прикусу та мовленнєвими порушеннями

During the examination of orthodontic patients, children with speech disorders were found. The myodynamic balance of antagonistic muscles and synergistic muscles is the relative stability of masticatory and mimic muscles, which for a long time persists without noticeable oscillations, contributes to the relatively stable state of dentoalveolar apparatus. The aim of the study – to determine the functional status of muscles of the dentoalveolar apparatus before and after treatment of children with anomalies of bite and speech disorders. Materials and Methods. To achieve study objectives for treatment we selected 44 patients with severe orthodontic pathology and speech disorders, with normal hearing and intellect. The method of a total (surface) electromyography was used to determine and analyze the indices of bioelectric activity of the muscles. Results and Discussion. There was normalization of parameters of bioelectric activity, decrease of parafunctional manifestations in muscles and decrease of the frequency of outbreaks of spontaneous activity of muscles at rest; normalization of the average amplitude of biopotentials in the state of activity, absence of fragmentation, improvement of synchronization and coordination of contractions of examined muscles in all pathologies of dental occlusion after the treatment. Conclusions. The orthodontic treatment performed provided the restoration of the neuromuscular balance of the dentoalveolar apparatus of patients with various dental occlusion pathologies, which has a beneficial effect on the correction of speech disorders.При обследовании ортодонтических пациентов были дети с речевыми нарушениями. Миодинамическое равновесие мышц-антагонистов и синергистов – это относительная устойчивость жевательных и мимических мышц, которая в течении длительного времени сохраняется без заметных изменений, способствует относительной стабильности зубочелюстного аппарата. Цель исследования – определить функциональное состояние мышц зубочелюстного аппарата до и после лечения детей с аномалиями прикуса и речевыми нарушениями. Материалы и методы. Для достижения поставленной цели было принято на лечение 44 пациента с выраженной ортодонтической патологией и речевыми нарушениями с нормальным слухом и интеллектом. Для определения и анализа показателей биоэлектрической активности мышц использован метод суммарной (поверхностной) электромиографии. Результаты исследований и их обсуждение. После проведённого лечения наблюдали нормализацию показателей биоэлектрической активности, уменьшение парафункциональних проявлений в мышцах и частоты вспышек спонтанной активности мышц в состоянии покоя, нормализация средней амплитуды биопотенциалов в состоянии активности, отсутствие фрагментаций, улучшение синхронности и координации сокращений обследованных мышц при всех патологиях прикуса. Выводы. Проведённое ортодонтическое лечение обеспечило восстановление нейромышечного баланса зубочелюстного аппарата пациентов с различными патологиями прикуса, что имеет благоприятное воздействие на коррекцию речевых нарушений.Під час обстеження ортодонтичних пацієнтів були діти з мовленнєвими порушеннями. Міодинамічна рівновага м’язів-антагоністів та синергістів – це відносна стійкість жувальних та мімічних м’язів, що протягом тривалого часу зберігається без помітних коливань, сприяє відносно стабільного стану зубощелепного апарату. Мета дослідження – визначити функціональний стан м’язів зубощелепного апарату до та після лікування дітей з аномаліями прикусу та мовленнєвими порушеннями. Матеріали і методи. Для досягнення поставленої мети було прийнято на лікування 44 пацієнти з вираженою ортодонтичною патологією та мовленнєвими порушеннями із нормальним слухом та інтелектом. Для визначення та аналізу показників біоелектричної активності м’язів використано метод сумарної (поверхневої) електроміографії. Результати досліджень та їх обговорення. Після проведеного лікування спостерігали нормалізацію показників біоелектричної активності, зменшення парафункціональних проявів у м’язах та частоти спалахів спонтанної активності м’язів у стані спокою, нормалізація середньої амплітуди біопотенціалів у стані активності, відсутність фрагментацій, покращення синхронності та координації скорочень обстежених м’язів при усіх патологіях прикусу. Висновки. Проведене ортодонтичне лікування забезпечило відновлення нейром’язового балансу зубощелепного апарату пацієнтів із різними патологіями прикусу, що має сприятливий вплив на корекцію мовленнєвих порушень

Two chemically distinct root lignin barriers control solute and water balance.

Lignin is a complex polymer deposited in the cell wall of specialised plant cells, where it provides essential cellular functions. Plants coordinate timing, location, abundance and composition of lignin deposition in response to endogenous and exogenous cues. In roots, a fine band of lignin, the Casparian strip encircles endodermal cells. This forms an extracellular barrier to solutes and water and plays a critical role in maintaining nutrient homeostasis. A signalling pathway senses the integrity of this diffusion barrier and can induce over-lignification to compensate for barrier defects. Here, we report that activation of this endodermal sensing mechanism triggers a transcriptional reprogramming strongly inducing the phenylpropanoid pathway and immune signaling. This leads to deposition of compensatory lignin that is chemically distinct from Casparian strip lignin. We also report that a complete loss of endodermal lignification drastically impacts mineral nutrients homeostasis and plant growth

Lateral Distribution of Muons in IceCube Cosmic Ray Events

In cosmic ray air showers, the muon lateral separation from the center of the shower is a measure of the transverse momentum that the muon parent acquired in the cosmic ray interaction. IceCube has observed cosmic ray interactions that produce muons laterally separated by up to 400 m from the shower core, a factor of 6 larger distance than previous measurements. These muons originate in high pT (> 2 GeV/c) interactions from the incident cosmic ray, or high-energy secondary interactions. The separation distribution shows a transition to a power law at large values, indicating the presence of a hard pT component that can be described by perturbative quantum chromodynamics. However, the rates and the zenith angle distributions of these events are not well reproduced with the cosmic ray models tested here, even those that include charm interactions. This discrepancy may be explained by a larger fraction of kaons and charmed particles than is currently incorporated in the simulations

Search for non-relativistic Magnetic Monopoles with IceCube

The IceCube Neutrino Observatory is a large Cherenkov detector instrumenting $1\,\mathrm{km}^3$ of Antarctic ice. The detector can be used to search for signatures of particle physics beyond the Standard Model. Here, we describe the search for non-relativistic, magnetic monopoles as remnants of the GUT (Grand Unified Theory) era shortly after the Big Bang. These monopoles may catalyze the decay of nucleons via the Rubakov-Callan effect with a cross section suggested to be in the range of $10^{-27}\,\mathrm{cm^2}$ to $10^{-21}\,\mathrm{cm^2}$. In IceCube, the Cherenkov light from nucleon decays along the monopole trajectory would produce a characteristic hit pattern. This paper presents the results of an analysis of first data taken from May 2011 until May 2012 with a dedicated slow-particle trigger for DeepCore, a subdetector of IceCube. A second analysis provides better sensitivity for the brightest non-relativistic monopoles using data taken from May 2009 until May 2010. In both analyses no monopole signal was observed. For catalysis cross sections of $10^{-22}\,(10^{-24})\,\mathrm{cm^2}$ the flux of non-relativistic GUT monopoles is constrained up to a level of $\Phi_{90} \le 10^{-18}\,(10^{-17})\,\mathrm{cm^{-2}s^{-1}sr^{-1}}$ at a 90% confidence level, which is three orders of magnitude below the Parker bound. The limits assume a dominant decay of the proton into a positron and a neutral pion. These results improve the current best experimental limits by one to two orders of magnitude, for a wide range of assumed speeds and catalysis cross sections.Comment: 20 pages, 20 figure

Search for Relativistic Magnetic Monopoles with IceCube

We present the first results in the search for relativistic magnetic monopoles with the IceCube detector, a subsurface neutrino telescope located in the South Polar ice cap containing a volume of 1 km$^{3}$. This analysis searches data taken on the partially completed detector during 2007 when roughly 0.2 km$^{3}$ of ice was instrumented. The lack of candidate events leads to an upper limit on the flux of relativistic magnetic monopoles of \Phi_{\mathrm{90%C.L.}}\sim 3\e{-18}\fluxunits for $\beta\geq0.8$. This is a factor of 4 improvement over the previous best experimental flux limits up to a Lorentz boost $\gamma$ below $10^{7}$. This result is then interpreted for a wide range of mass and kinetic energy values.Comment: 11 pages, 11 figures. v2 is minor text edits, no changes to resul

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With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than $10^{28}$ s at 90% CL for dark matter masses above 10 TeV