3 research outputs found

    A Single-Layer Flat-Coil-Oscillator-Based Technology as a Highly Sensitive Promising Detector for State-of-the-Art “Cognitive Radio Systems”

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    A low-power stable self-excited oscillator on a single layer flat coil, functioned at radiofrequency band, was developed and further named as SFCO technology (a Single-layer Flat-Coil-Oscillator). Two main classes of sensitive sensors were designed on the base of this technology: sensors with vibration system and without one [1]. All types of them have already demonstrated unique capabilities to solve the urgent problems of experimental physics [2-8]. SFCO sensors increase the sensitivity of methods in seismology and geophysics [9–11], in physiology and biophysics [12–16]. In SFCO sensors frequency of the oscillator is used as a detecting pa­rameter. The measuring effect is determined by a distortion of the radiofrequency MHz-range testing field configuration near a flat coil, leading to mag­netic inductance changes in the coil. In this Chapter, we will discuss the principle of operation, and test data of SFCO sensors. Wide potentials of this technique will be outline too

    Angiotensin II type 1 receptor antagonists in the treatment of hypertension in elderly patients: focus on patient outcomes

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    Artavazd Tadevosyan1, Eric J MacLaughlin2, Vardan T Karamyan31Departments of Medicine, Montreal Heart Institute and Université de Montréal, Montreal, QC, Canada; 2Department of Pharmacy Practice, 3Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USAAbstract: Hypertension in the elderly is one of the main risk factors of cardiovascular and cerebrovascular diseases. Knowledge regarding the mechanisms of hypertension and specific considerations in managing hypertensive elderly through pharmacological intervention(s) is fundamental to improving clinical outcomes. Recent clinical studies in the elderly have provided evidence that angiotensin II type 1 (AT1) receptor antagonists can improve clinical outcomes to a similar or, in certain populations, an even greater extent than other classical arterial blood pressure-lowering agents. This newer class of antihypertensive agents presents several benefits, including potential for improved adherence, excellent tolerability profile with minimal first-dose hypotension, and a low incidence of adverse effects. Thus, AT1 receptor antagonists represent an appropriate option for many elderly patients with hypertension, type 2 diabetes, heart failure, and/or left ventricular dysfunction.Keywords: angiotensin II, ARB, cardiovascular disease, antihypertensive therapy, elderl

    Physics with Positron Beams at Jefferson Lab 12 GeV

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    Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context of the Hadronic Physics program at the Jefferson Laboratory (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of the nucleon, in both the elastic and the deep-inelastic regimes. For instance, elastic scattering of (un)polarized electrons and positrons off the nucleon allows for a model independent determination of the electromagnetic form factors of the nucleon. Also, the deeply virtual Compton scattering of (un)polarized electrons and positrons allows us to separate unambiguously the different contributions to the cross section of the lepto-production of photons, enabling an accurate determination of the nucleon Generalized Parton Distributions (GPDs), and providing an access to its Gravitational Form Factors. Furthermore, positron beams offer the possibility of alternative tests of the Standard Model through the search of a dark photon or the precise measurement of electroweak couplings. This letter proposes to develop an experimental positron program at JLab to perform unique high impact measurements with respect to the two-photon exchange problem, the determination of the proton and the neutron GPDs, and the search for the A′A^{\prime} dark photon
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