238 research outputs found
Inhomogeneous Magnetoelectric Effect on Defect in Multiferroic Material: Symmetry Prediction
Inhomogeneous magnetoelectric effect in magnetization distribution
heterogeneities (0-degree domain walls) appeared on crystal lattice defect of
the multiferroic material has been investigated. Magnetic symmetry based
predictions of kind of electrical polarization distribution in their volumes
were used. It was found that magnetization distribution heterogeneity with any
symmetry produces electrical polarization. Results were systemized in scope of
micromagnetic structure chirality. It was shown that all 0-degree domain walls
with time-noninvariant chirality have identical type of spatial distribution of
the magnetization and polarization.Comment: submitted to IOP Conference Series: Materials Science and Engineerin
Plasmonic Magnetooptic Structures for Visualization of Magnetic Information
Optical head with magnetized garnet layer is used to detect presence of thin ferromagnetic layers such as printed text. Mathematical model of the system was created. Incident P-polarized light affected by garnet layer changes its polarization due to Faraday effect. We can detect presence or absence of magnetic information after studying changes in polarization of the reflected light.
Keywords: Magnetoplasmonic, Faraday effect, magnetoplasmonic structure, Magneto-optic plasmon resonance
Surface thermohardening by the fast-moving electric arch
© Published under licence by IOP Publishing Ltd.This paper describes the technology of modern engineering-plasma hardening steels and prospects of its application. It gives the opportunity to manage the process without using of cooling media, vacuum, special coatings to improve the absorptive capacity of hardened surfaces; the simplicity, the low cost, the maneuverability, a small size of the process equipment; a possibility of the automation and the robotization of technological process
Lymph node dissection impact on long-term survival rate of gastric cancer patients in Ukraine
Over a period of 2007-2011 188 stomach cancer (SC) patients have been
included in the research in abdominal oncosurgical department of Odessa
oncological center. Volume of lymph node dissections differed by quantity of
lymph nodes to be removed. All patients were divided into three groups.
Patients with D1 or D1+ lymph node dissections have been performed, totally
90 patients are included in group of historical control. In all cases so-called
lymph node dissections for principal reasons have been executed. The
multifactorial analysis of patients survival is implemented depending on a type
of a lymph node dissections, a stage of the cancer, number of involved lymph
nodes, involvement of the tumoral microcirculatory net (ly is carried out, v)
signs of a perinevral invasion (Nev), availability of residual tumoral tissue (R),
degree of a differentiation (G). Regardless of a disease stage, SC at 60 % of
patients, represented with initially hematologicaly disseminated disease. 40 %
of SC`s had no signs of intratumoral microcirculatory net involvement even in
case of more than 15 regional lymph nodes are involved
Some discussions on functionalist housing and its economics in Romania by Lhe late 1950s and early 1960s
This paper proposes an analysis of the Romanian architectural practices in the late 1950's and early 1960's by considering the availability of financial resources. I premise that echoes of Moscow's approaches to the built environment overlapped the Bucharest politicians' priorities, whose lack of constancy in economic decision-making exacerbated itself as the urban construction programs advanced. From the Romanian authorities' point of view, therefore, raising the mass housing profitability could save important financial resources for other investments in heavy industry, while maintaining the appearance of a social state. Similarities between Soviet and Romanian modernist building projects suggested a coherent approach to housing throughout the bloc. However, this article will show that functionalist architectural modernism -cheap and fast to erect- also proved beneficial for Gheorghe Gheorghiu-Dej's economic plans, which questions urban construction projects' political agendas and the professional tensions between architects and economists. Therefore, investigating the functionalist architecture opens up several lines of inquiry: to what extent Nikita Khrushchev's housing program was transferred in Romania; the tortuous policies of the Romanian state's leadership in the field of housing as well as how local bureaucratic or professional actors appropriated, interpreted and adjusted such programs; and, the economic costs of the new functionalist approach to urban dwelling. In this way, this article reads the making of functionalist mass housing programs by the late 1950s to assess the Soviets' part in building the Romanian cities. To this end, the article contributes to the recent scholarly literature on multiple modernities
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