Recently, many authors have focused on the question of symmetric positive solutions for ordinary differential equation boundary value problems, for example, see (Avery & Henderson, 2000; Çetin & Topal, 2012; Graef & Kong, 2008; Hamal & Yoruk, 2010; Jiang, Liu & Wu, 2013; Luo & Luo, 2010; Luo & Luo, 2012; Lin & Zhao, 2013; Tersenov, 2014) and the references therein. In (Avery & Henderson, 2003),...

This paper presents a new structure for non-isolated and non-inverting DC-DC converters with high voltage gain harnessing the fundamentals of lift technique. The proposed topology is suitable low applications. operation principles, steady-state relations, different switching strategies to further improve performance converter are described. A hybrid utilization complementary approach simultaneo...

We propose a simple implementation to obtain super-broadband geometric phase devices (GPD) by means of circular polarization converter (CPC) with mirror symmetry. demonstrate that the best choice wideband GPDs and CPCs is symmetric structure. Based on two-rotation model Poincaré sphere, optimization parameters time are significantly reduced. The CPC can be extended GPD, such as gratings (PGs), ...

Voltage lift is a well-known technique to improve the voltage gain of converter. A combination switched inductor and conventional can be used achieve high gain, but semiconductor's stress still high. An improved by employing an extra diode capacitor proposed, which significantly increases boosting factor reduces semiconductor devices. The proposed converter transformerless non-isolated in natur...

for beneficiation of converter slag, the role of surface phenomena on slag composition was studied. this work includes some experimental data, which were measured for basic oxygen steel (bos) slag in isfahan steel plant. all data were collected on site in the plant. the results support the idea that surface activity plays a major role in converter slag formation. it was also a new finding that ...

Single crystals of the title compound, tetra-lutetium(III) tris-(cyclo-tetra-phosphate), Lu(4)(P(4)O(12))(3), were obtained by solid-state reaction. The cubic structure is isotypic with its Al(III) and Sc(III) analogues and is built up from four-membered (P(4)O(12))(4-) phosphate ring anions ( symmetry), isolated from each other and further linked through isolated LuO(6) octa-hedra (.3. symmetr...

The main intention of this paper is to propose a methodology for deriving reduced-order model from complex n-dimensional system. mathematical voltage-lift based quadratic high gain dc-dc converter with in continuous conduction mode (CCM) proposed. chosen topology amalgamates cells boost obtain improved voltage gain. operating principle the configuration steady-state analysis discussed CCM. open...