To cite this article: Yao Xiong Huang (1998) The transverse magnetic wave and the Brewster angle for a dielectric medium moving in an arbitrary directon, Journal of Modern Optics, Abstract.The reflection and transmission of a transverse magnetic wave, and in particular the Brewster angle, are investigated for the case of a dielectric medium moving in an arbitrary direction. Various interesting features concerning the variation in the field vectors, the reflection and transmission coefficients, and the Brewster angle, are discussed as functions of the velocity and the refractive index of the moving medium. Specifically, the condition of obtaining amplitude amplification accompanied by frequency multiplication, the polarization of the field vectors in both the reflected and the transmitted waves, the wave features of the reflected wave under the Brewster angle, and the physical effects which occur in the case where the medium moves in an arbitrary direction but do not occur in the case where the medium just moves in some particular directions are discussed in detail.
The method of obtaining the information about the properties of a moving medium by the electromagnetic wave reflected from it has been derived. Based on this method, one can identify the moving medium to be a dielectric medium, a perfect conductor, or plasma, and even determine the dielectric constants of dielectric moving media, or the magnitude of np and hence the electron density of a plasma from the polarization state and the magnitude of the reflected field vectors.
Traditional pelvimetry for a pregnant women is mainly relied on a ruler or estimation based on the vaginal touch, which results a very high measuring error. A new pelvimetry based on electromagnetic tracker is proposed in this paper , and a measure system has been developed . It’s a non-invasive method to measure key parameters of a pelvis because of the character of high accuracy, without line-of-sight restrictions and non-radiation of electromagnetic tracking technology. Its precise measuring data can well fulfill clinical pelvimetry needs, and be helpful for a physician to make decisions to go on a vaginal delivery or not during a labor.
This issue contains a selection of peer-reviewed articles that were presented during the 4th Korea–China Symposium on Biomaterials and Nano-Biotechnology held in the Seokwipo KAL Hotel, Jeju-Do, Korea on 19–24 October 2006. The symposium focused on the recent development of novel biomaterials and nano-biotechnologies related to medical industries with financial support from the Korea Science and Engineering Foundation (KOSEF) and the National Natural Science Foundation of China (NSFC).With human health and welfare in mind, research on biomaterials and nano-biotechnology has been one of the fastest growing areas, combining interdisciplinary engineering and scientific bases underlying the development of new biomaterials, methodology and technology for clinical applications. In the near future, by developing novel biomaterials and biotechnology, the biomedical industries will be able to provide patients as well as medical doctors with more effective and safer devices and treatments for many clinical approaches. The newly emerging biomaterials and nano-biotechnologies will enable many engineers, scientists and clinicians to revolutionize medical devices and provide treatments specifically adapted to each individual disease.At the 4th Korea–China Symposium, scientifically distinguished speakers from Korea, China, Japan and the USA shared their experiences and knowledge about these emerging fields of biomaterials and nano-biotechnology. The topics covered mainly the areas of biopolymers, bioceramics, biometals, modification of biomaterials, tissue engineering, drug delivery and nano-biotechnology. We are grateful to all the authors for submitting their work to this special issue as well as to Professors F-Z Cui, I-S Lee and M Spector, the Editors-in-Chief of Biomedical Materials, for their contributions to the symposium. Through these continuing symposia we hope that the participating scientists will take further steps forward in the development of advanced biomaterials and nano-biosciences and technologies for both Korea and China, as well as enhancing the partnership between the two countries.
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