Environmental Noise Pollution and Impact in Major Markets of Akwa Ibom State, Nigeria

Environmental noise pollution and impact in some markets of Akwa Ibom State Nigeria have been carried out The average maximum noise level of 90 4 dB A 85 2 dB A and 74 3dB A recorded in the mornings afternoons and evenings constitute a health hazard for the vendors and buyers in these markets as they exceed the recommended standards The average minimum values of 66 66 63 7 and 60 0dB A were also recorded for mornings afternoons and evenings Reduced hearing acuity speech intelligibility and clarity communication disturbances and fatigue were some of the negative impacts on the market operators as acknowledged during the subjective assessment of the respondents Lock-up shops which should serve as noise barriers should be provided in these market to replace the open market operations as this would reduce the emitted noise and the negative impact

Fiber Optic Technology: It’s Role in Information Revolution

Everywhere on this planet, hair-thin optical fibers carry vast quantities of information from place to place. There are many desirable properties of optical fibers for carrying this information. They have enormous information-carrying capacity, are low cost, and possess immunity from the many disturbances that can afflict electrical wires and wireless communication links. The superiority of optical fibers for carrying information from places to place is leading to their rapidly replacing older technologies. Optical fibers have played a key role in making possible the extraordinary growth in world-wide communications that has occurred in the last 25 years, and are vital in enabling the proliferating use of the Internet. Keywords: Fiber optics, refractive index, claddings, attenuation, repeaters, dispersion, encoding, fiber network, architecture