AbstractIn this paper we describe the design of microwave low pass filter by using micro strip layout. Most of the communication system has an RF front end that performs signal processing with RF filters. Micro strip filters provides a low cost means for this. Filters play an important role in microwave applications. Microstrip filter is a two port network used to control the fre-quency respons...

depends upon: (a) concentration of caffeine; (fc) time of addition of caffeine; (c) length of exposure; and (d) carcinogen used. The addition of caffeine to cells treated 1 hr previously with carcinogen resulted in the potentiation of toxicity. Toxicity increased with caffeine concentration and length of exposure to carcinogen-containing medium. With 50 ¿ig caffeine per ml medium for 2 days cl...

In this paper, we present a novel approach for improving the bandwidth of a microstrip patch antenna using Jerusalem crossshaped frequency selective surfaces (JC-FSSs) as an artificial magnetic ground plane. The invasive weed optimization (IWO) algorithm is employed to derive optimal dimensions of the patch antenna and JC-FSS element in order for the whole structure to work at 5.8GHz with consi...

This paper presents modeling of the complex permeability spectra, fabrication and a wide frequency range characterization of a toroidal LTCC ferrite sample. A commercial ferrite tape ESL 40012 is used, and standard LTCC (Low Temperature Co-fired Ceramic) processing has been applied to the sample fabrication. The characterization was performed using a short coaxial sample holder and a vector net...

Background: Despite advances in the medical care of renal transplant recipients which have led to an improvement in allograft survival, renal allograft rejection is still a major ob-stacle to successful organ transplantation. Understanding the mechanisms contributing to allograft rejection will be of great importance for the development of efficient antirejection strategies. Objective: The aim ...

reflection seismic data consist of primary reflections, coherent and incoherent noises. one of the objectives of seismic data processing is to enhance the quality of the real signals by attenuating different kinds of noises. multiples constitute one of the most troublesome forms of coherent noises in exploration seismology. multiple reflections often destructively interfere with the desired pri...

in this paper, the boundary-based estimation of pressure distribution in the cardiovascular system is investigated using two dimensional flow images. the conventional methods of non-invasive estimation of pressure distribution in the cardiovascular flow domain use the differential form of governing equations. this study evaluates the advantages of using the integral form of the equations in the...

A Corpus-Based Chinese-Korean Abstracting Translation System is designed and imple­ mented. Firstly, a text indexing method called Natural Hierarchical Network(NHN) is intro­ duced, and then a Corpus-Based Word Seg­ mentation algorithm is developed with the segmentation correctness of 98% for open test. Based on a words weighting function and a sentence importance weighting function which can d...

In line with the continually advancing ma turity of the electronics field as a whole, the portion of the field concerned with frequency control has made significant forward strides in recent years. As a result, high-precision fre quency standards employing quartz resonators presently achieve stabilities of a part in 109 per day or better, while atomic standards ex hibit accuracies of one or two...

We have developed a qualitative and quantitative assay system for detecting cells lacking postconfluence inhibition of cell division (contact insensitivity, CS~) in golden Syrian ham ster embryo cells in culture by measuring the number of cells able to form colonies on a lethally irradiated, confluent monolayer of a contact-sensitive established cell line. A subpopulation in normal low-passage ...