75 research outputs found
Photothermoplastic films for holographic recording
The electrophotographic and sensitometric characteristics of poly-N-vinyl carbazole photothermoplastic films, sensitized by an amorphous-Se sublayer are examined. It is shown that the photosensitivity of the material can be improved and its spectral range can be expanded by sensitization of amorphous Se with additions of Te, As, and Sb; this can be accomplished without a significant reduction in diffraction efficiency and resolving power
Analysis of Current Distributions and Radar Cross Sections of Line Source Scattering from Impedance Strip by Fractional Derivative Method
In this paper, we have studied the analysis of current distributions and radar cross sections of line source scattering from impedance strip. The problem was solved with fractional derivative method previously. Here, the specific case of fractional derivative method is investigated. The problem under consideration on the basis of various methods is studied well, however, they are mainly done by numerical methods. The fractional derivative method, allows an analytical solution in a specific situation. This method allows to obtain analytical solution of impedance strip for a special case which is fractional order is equal to 0.5. When fractional order is 0.5, there is an analytical solution which is explained and current distribution, radar cross section and near field patterns are given in this paper. Here, as a first time, current distribution, bi-static radar cross section and near field for the upper and lower part of the strip are studied
A Calorimetric Characterization of Cr(VI)-Reducing Arthrobacter oxydans
This is the first of a series of calorimetric studies designed to characterize and understand survival mechanisms of metal-reducing bacteria isolated from metal-polluted environments. In this paper we introduce a new concept of thermal spectrum of the endothermic melting of complex biological systems (e.g., proteins, nucleic acids, ribosomes, membrane structures) in intact cells. All thermal spectra measured are thermograms that describe the temperature dependence of heat capacity change of the complex systems of biologically active substances in bacterial cells. This new concept of thermal spectrum was applied to investigate spectral features from intact cells of Cr(VI)-reducer Arthrobacter oxydans at different points of their growth conditions and stages. Over the temperature range of 40–105°C, we observed that spectral changes are particularly significant in the 40–90°C interval. This may correspond to the orderly changes in subcellular structural elements: proteins, ribosomes and RNA, membranes, and various structural elements of the cell wall during different points of the growth cycle and growth conditions. Spectral changes in the 90–105°C region are less pronounced, implicating that the structural composition of DNA-Protein (DNP) complexes may change little
Reflections on the ethics of the patient
The article deals with one of the least studied moral and ethical problems the behavior of the patient in relation to the doctor and medical staff. It is shown that the subjective moral and psychological qualities of the patient are of crucial importance. Such an important factor determining the patient's behavior as the motivations that guide him is analyzed. The moral and ethical qualities of the patient necessary for the harmonization of the patient-doctor relationship are highlighted. Long-term empirical observations in the system of patient-doctor relationships allow us to substantiate the conclusions that the nature of the connections between them is mediated by the goals they are guided by; that the patient's behavior depends on the level of his spirituality, his moral and ethical qualities, interests, values; that the harmonization of doctor-patient relations is ensured not only by the fact that that the doctor "should", but also by what the patient "should", i.e. by joint efforts.</jats:p
Synthesis of antennas with specific pattern and polarization properties based on complex materials
Electromagnetic wave diffraction by finite metal-dielectric structures (2D &amp; 3D)
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