Bøger af Abdullah Al Mamun

Content of this book consist of article available in google scholar and other online sources. Studying Pharmacognosy and Toxicology is an emergent course in Bangladesh. Wide variety of medicinal plants and huge numbers of traditional practitionar make this field as a major upgrowing field of study in Bangladesh. Huge numbers of herbal formulations has been using for treating many diseases since ancient period. This book is result of clinincal evaluation and toxicological risk assessment of a herbal formulation. The overall goal of this book is a proper understaning of toxicological risk assessment of herbal formulation.

The use of Substrate Integrated Waveguide (SIW) in the design of microwave band pass filter has been very popular in recent years. Attractive SIW filters include compact size, high power handling capability and low loss. The aim of this project is to design and investigate the performance of RF filter using Half-mode Substrate Integrated Waveguide (HMSIW) technique. The project is divided into three major parts, design, simulation and fabrication. The report starts with a brief literature review followed by details on the most important aspects of building a filter. The simulation software¿s used are briefly discussed with the key aspects of individual and how they are being used in the design and simulation process. The next section comprises of details about the design process combining with bulk simulation data and also the fabrication process of the filter. The section compares data after methodical changes brought to the filter and concludes by discussing about the final experimental data. The following section briefly summarizes all the simulation performed on a multilayer filter, and observes how certain changes to the filter affect the response.