The construction of dimethylenebis(eicosyldimethylammonium bromide) surfactant-directed gold nanoparticles (NPs) has been accomplished via a one-pot thermal reduction of HAuCl4 with trisodium citrate. The effect of cationic twin-tail surfactants, dimethylenebis(hexadecyldimethylammonium bromide) (16-2-16), dimethylenebis(octadecyldimethylammonium bromide) (18-2-18) and dimethylenebis(eicosyldim...

The Partial-Element-Equivalent-Circuit (PEEC) approach is an effective method to convert three-dimensional on-chip multiconductor structures to circuit-level descriptions. In this paper, a triangular-mesh-based PEEC approach is described, wherein the surfaces of arbitrarily-shaped conducting structures are represented by triangular mesh tesselations. A coupled EM-circuit formulation is obtained...

The turbulent convective thermal transfer in channel heat exchangers (CHEs) is studied numerically via the CFD (Computational Fluid Dynamics) method. Deflectors are inserted on hot bottom walls of to enhance hydrothermal characteristics. Various shapes in-line deflectors considered, namely: rectangular (a/b = 0.00), cascaded rectangular-triangular 0.25, 0.50, and 0.75), triangular 1.00) shapes....

In this paper we show the triangular geometry of the microstrip patch is one of the mostcommon shapes having a wide range application ranging from circuit elements to modernwireless antenna. In this paper we compare Cslot microstrip antenna an slotted equilateraltriangular microstrip antenna. Recent survey of open literature shows interesting developmentof this patch as novel ci...

The triangular geometry of the microstrip patch is one of the most common shapes having a wide range of applications ranging from circuit elements to modern wireless antennas. Recent survey of open literature shows interesting development of this patch as novel circuit elements and antennas. In this paper, a very comprehensive review of the applications and investigations on triangular microstr...

This study aims to determine ethnomathematics studies on the Langkanae palace building in city of Palopo. type research is descriptive qualitative. The main instrument researcher and instruments used are interview guidelines, literature documentation. technique was through interviews, study, documentation with qualitative data analysis consisting 3 stages, namely reduction, presentation drawing...

Energy harvesting mechanisms can be used to extract energy from ambient surroundings power small electronic devices, which has a significant advantage in realizing self-sustaining wireless devices. The proposed design of this study uses the internal fluid flow within pipe and takes fluid–structure interaction through flow-induced vibration bluff body. hybrid harvester convert electrical piezoel...

Pattern formation in higher-order lumps of the Kadomtsev–Petviashvili I equation at large time is analytically studied. For a broad class these lumps, we show that two types solution patterns appear time. The first type comprises fundamental arranged triangular shapes, which are described by root structures Yablonskii–Vorob’ev polynomials. As evolves from negative to positive, this pattern reve...

Graphene based spintronic devices require an understanding of the growth of magnetic metals. Rare earth metals have large bulk magnetic moments so they are good candidates for such applications, and it is important to identify their growth mode. Dysprosium was deposited on epitaxial graphene, prepared by thermally annealing 6H-SiC(0001). The majority of the grown islands have triangular instead...