Military Academy

About: Military Academy is a based out in . It is known for research contribution in the topics: Population & Context (language use). The organization has 2478 authors who have published 3003 publications receiving 33188 citations.

Nonlinear buckling and post-buckling analysis of imperfect porous plates under mechanical loads:

Abstract: The nonlinear buckling and post-buckling response of imperfect porous plates is investigated analytically in this paper. The porous materials with elastic moduli are assumed to vary through the thi...

Characteristics of systemic lupus erythematosus in a sample of the Egyptian population: a retrospective cohort of 1109 patients from a single center.

Abstract: IntroductionSystemic lupus erythematosus (SLE) is a multisystem autoimmune disease that can vary among different ethnic and racial groups.ObjectiveThe objective of this paper is to study the prevalence of various manifestations of SLE in a sample of the Egyptian population.Patients and methodsInformation in this study was derived from the medical records of SLE patients who sought medical advice at a private clinic in Cairo from January 1980 to June 2016.ResultsThis study included 1109 SLE patients, of whom 114 (10.3%) were males and 995 were females (89.7%). Mean age of onset was 25.89 ± 10.81 years, while the median of disease duration from the onset of the disease till the last recorded visit was 26 months. The most common cumulative manifestations were arthritis (76.7%), malar rash (48.5%), leukopenia (45.7%), and photosensitivity (45.6%). A total of 33.1% of the patients had nephritis, and neuropsychiatric lupus was present in 6.4% of the patients. Secondary antiphospholipid syndrome was present in 1...

Molecular surveillance of drug resistance through imported isolates of Plasmodium falciparum in Europe

Abstract: Results from numerous studies point convincingly to correlations between mutations at selected genes and phenotypic resistance to antimalarials in Plasmodium falciparum isolates. In order to move molecular assays for point mutations on resistance-related genes into the realm of applied tools for surveillance, we investigated a selection of P. falciparum isolates that were imported during the year 2001 into Europe to study the prevalence of resistance-associated point mutations at relevant codons. In particular, we tested for parasites which were developing resistance to antifolates and chloroquine. The screening results were used to map the prevalence of mutations and, thus, levels of potential drug resistance in endemic areas world-wide. 337 isolates have been tested so far. Prevalence of mutations that are associated with resistance to chloroquine on the pfcrt and pfmdr genes of P. falciparum was demonstrated at high levels. However, the prevalence of mutations associated with resistance to antifolates at the DHFR and DHPS genes was unexpectedly low, rarely exceeding 60% in endemic areas. Constant screening of imported isolates will enable TropNetEurop to establish a screening tool for emerging resistance in endemic areas.

Theory of a curved planar waveguide with Robin boundary conditions.

Abstract: A model of a thin straight strip with a uniformly curved section and with boundary requirements zeroing at the edges a linear superposition of the wave function and its normal derivative (Robin boundary condition) is analyzed theoretically within the framework of the linear Schrodinger equation and is applied to the study of the processes in the bent magnetic multilayers, superconducting films and metallic ferrite-filled waveguides. In particular, subband thresholds of the straight and curved parts of the film are calculated and analyzed as a function of the Robin parameter 1/Lambda , with Lambda being an extrapolation length entering Robin boundary condition. For the arbitrary Robin coefficients which are equal on the opposite interfaces of the strip and for all bend parameters the lowest-mode energy of the continuously curved duct is always smaller than its straight counterpart. Accordingly, the bound state below the fundamental propagation threshold of the straight arms always exists as a result of the bend. In terms of the superconductivity language it means an increased critical temperature of the curved film compared to its straight counterpart. Localized-level dependence on the parameters of the curve is investigated with its energy decreasing with increasing bend angle and decreasing bend radius. Conditions of the bound-state existence for the different Robin parameters on the opposite edges are analyzed too; in particular, it is shown that the bound state below the first transverse threshold of the straight arm always exists if the inner extrapolation length is not larger than the outer one. In the opposite case there is a range of the bend parameters where the curved film cannot trap the wave and form the localized mode; for example, for the fixed bend radius the bound state emerges from the continuum at some nonzero bend angle that depends on the difference of the two lengths Lambda at the opposite interfaces. Various transport properties of the film such as interference blockade of the current flow at some special energies is also discussed with the special attention being paid to the transformation from the Dirichlet to the Neumann case as the extrapolation length Lambda sweeps the positive axis.