Deformations of the Boson sp(4,R)sp(4,R) Representation and its Subalgebras

The boson representation of the sp(4,R) algebra and two distinct deformations of it, are considered, as well as the compact and noncompact subalgebras of each. The initial as well as the deformed representations act in the same Fock space. One of the deformed representation is based on the standard q-deformation of the boson creation and annihilation operators. The subalgebras of sp(4,R) (compact u(2) and three representations of the noncompact u(1,1) are also deformed and are contained in this deformed algebra. They are reducible in the action spaces of sp(4,R) and decompose into irreducible representations. The other deformed representation, is realized by means of a transformation of the q-deformed bosons into q-tensors (spinor-like) with respect to the standard deformed su(2). All of its generators are deformed and have expressions in terms of tensor products of spinor-like operators. In this case, an other deformation of su(2) appears in a natural way as a subalgebra and can be interpreted as a deformation of the angular momentum algebra so(3). Its representation is reducible and decomposes into irreducible ones that yields a complete description of the same

INFORMATION VALUE OF PARAMETERS FOR HEART RHYTHM ANALYSIS UNDER CONDITIONS OF ANEMIC HYPOXIA

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Growth rate effects in soft CoFe films

We report on growth rate effects in sputter-deposited CoFe films prepared using high target utilization sputtering technology (HiTUS). We find that the grain structure of these polycrystalline films is closely related to the growth rate. By changing the growth rate, samples were prepared with different grain structure, which in turn had the effect of changing the magnetic properties of the films. We demonstrate control of the coercivity, which varied by a factor of more than ten. This was achieved via grain size control in CoFe films of thickness 20 nm. Furthermore, by employing a two-step sputtering process, in which two extreme growth rates are used sequentially, we were able to tune the saturation magnetization

PLASMA ERYTHROPOIETIN ACTIVITY AND INHIBITORY PROPERTIES AFTER VARIOUS ADRENERGIC INFLUENCES IN RATS

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ADHESIVE PROPERTIES OF LYMPHOCYTES - A POSSIBLE MECHANISM FOR THEIR SELECTIVE DISTRIBUTION IN THE ORGANISM

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A historical review of the International Symposia on Recent Advances of Rhinosinusitis and Nasal Polyposis, organized since 2000 around the world

Background: The problems of rhinosinusitis and nasal polyposis have been discussed further back in time. Nature of nasal polyps is diverse. Therapeutical approaches back then were original and strange in some cases. Connections with rhino-sinu-nasal pathologies have been proven in patients with obstructive sleep apnea. Data shows that OSA severity is directly related to the response of the tissues in the area.Materials and methods: Scientific databases – PubMed, SCOPUS and MEDLINE were used to search for gathering the data in need. The following keywords rhinosinusitis, nasal polyposis, treatment. Information and data from the official websites of the organizing committees has been used. The aim of the following article is to study the history of rhinosinusitis and nasal polyposis diagnosis and treatment development.Results and discussion: Acute and chronic rhinosinusitis and nasal polyposis are conditions more frequently diagnosed nowadays, due to the multifactorial etiology they are linked to. Authors have been continuously working on the field, more abruptly since the year of 2000. A number of scientific events have been organized, where clinicians reached to consensus and issued guidelines on how the mentioned conditions should be treated. FESS and computer aided surgeries have been in the focus in the last 10 years.Conclusions: Rhino-sinu-nasal pathology is directly related to the quality of life of patients affected. Therefore, clinicians should continue working in the field, and investigating the root causes of the disorders. More attention is to be brought on the allergic etiology, often main cause of the nasal pathologies

Robust IR Remote Sensing Technique of the Total Column of Trace Gases Including Carbon Dioxide and Methane

Progress on the development of a differential radiometer based upon the Fabry-Perot interferometer (FPI) for methane (CH4) and carbon dioxide (C02) detection in the atmosphere is presented. Methane measurements are becoming increasingly important as a component of NASA's programs to understand the global carbon cycle and quantifY the threat of global warming. Methane is the third most important greenhouse gas in the Earth's radiation budget (after water vapor and carbon dioxide) and the second most important anthropogenic contributor to global warming. The importance of global warming and air quality to society caused the National Research Council to recommend that NASA develop the following missions [1]: ASCENDS (Active Sensing of C02 Emissions over Nights, Days, and Seasons), GEOCAPE (Geostationary Coastal and Air Pollution Events), and GACM (Global Atmosphere Composition Mission). Though methane measurements are not specifically called out in these missions, ongoing environmental changes have raised the importance of understanding the methane budget. In the decadal survey is stated that "to close the carbon budget, we would also address methane, but the required technology is not obvious at this time. If appropriate and cost-effective methane technology becomes available, we strongly recommend adding a methane capability". In its 2007 report the International Panel on Climate Change identified methane as a key uncertainty in our understanding saying that the causes of recent changes in the growth rate of atmospheric CH4 are not well understood. What we do know is that methane arises from a number of natural sources including wet lands and the oceans plus man made sources from agriculture, as well as coal and petroleum production and distribution. It has recently been pointed out that large amount of methane are frozen in the permafrost of Canada and Siberia. There is a fear that melting of this permafrost driven by global warming may release large amounts of methane very suddenly further exacerbating climate change [2]. Last year our group began a joint effort with Johns Hopkins Applied Physics Laboratory to investigate the possibility of developing a small unmanned aerial vehicle (UAV) equipped to measure greenhouse gases-particularly methane. Although we are targeting our system for smaller UAV's the instrument will be directly applicable to missions involving larger NASA UAV's such as Global Hawk or even on missions utilizing manned aircraft. Because of its small size, inherent ruggedness and simplicity some version of our proposed instrument may find a role as a satellite instrument for NASA or NOAA