Recent developments in the application of lignocellulosic materials for oil spill removal are discussed in this review article. The types of lignocellulosic substrate material and their different chemical and physical modification strategies and basic preparation techniques are presented. The morphological features and the related separation mechanisms of the materials are summarized. The material types were classified into 3D-materials such as hydrophobic and oleophobic sponges and aerogels, or 2D-materials such as membranes, fabrics, films, and meshes. It was found that, particularly for 3D-materials, there is a clear correlation between the material properties, mainly porosity and density, and their absorption performance. Furthermore, it was shown that nanocellulosic precursors are not exclusively suitable to achieve competitive porosity and therefore absorption performance, but also bulk cellulose materials. This finding could lead to developments in cost- and energy-efficient production processes of future lignocellulosic oil spillage removal materials.
designed BPF are as follows: W 1 5 1.5 mm, W 2 5 1.0 mm, W 3 5 0.6 mm, W 4 5 1.0 mm, W 5 5 0.88 mm, L 1 5 5.7 mm, L 2 5 5.88 mm, L 3 5 9.23 mm, L 4 5 11.0 mm, L 5 5 12.0 mm, L 6 5 3.51 mm, d 1 5 0.17 mm, d 2 5 0.17 mm, d 3 5 0.17 mm, and d 4 5 0.17 mm.ABSTRACT: In this article, an ultrawideband (UWB) antenna with triple band-rejection characteristics is proposed. The antenna is compact with size of 22.5 3 24 mm 2 . Matching between a sector-disk shaped radiating patch and the 50-X microstrip line is manipulated through a proximity-feed technique. An elliptically-shaped aperture is etched in the ground plane to enhance the antenna bandwidth. Double shunt stubs are used to get more enhancement of the impedance bandwidth of the
The modeling of the electrical activity of the heart is of great medical and scientific interest as it provides a way to better understand the underlying biophysical phenomena supports the development of new techniques for diagnoses and serves as a platform for drug tests. At cellular level, the electrical activity of cardiac tissues may be simulated by solving a system of ordinary deferential equations (ODEs) describing the electrical behavior of the cell membrane. Because the biophysical processes underlying this phenomenon are non-linear and change very rapidly, the ODE system is challenging to solve numerically. Furthermore, the implementation of these models is a hard task. In this paper we present a finite element method (FEM) of monodomain model which coupled with the modified FitzHugh-Nagumo (FHN) model in simulation of cardiac excitation isotropic propagation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.