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This paper introduces a component of the Radio Frequency transceiver called the mixer. The mixer is a critical component in the RF systems, because of its ability for frequency conversion. This passage focuses on the design analysis and simulation of multiple topologies for the active down-conversion mixer. This mixer is characterized by its important design properties which consist of conversion gain, linearity, noise figure, and port isolation. The topologies that are given in this passage range from the most commonly known mixer design, to implemented design techniques that are used to increase the mixers important design properties as the demand of CMOS technology and the overall RF system rises. All mixer topologies were designed and simulated using TSMC 0.18 [micrometer] CMOS technology in Advanced Design Systems, a simulator used specifically for RF designs.

Modern wastewater treatment plants (WWTP) often make use a combination of multiple interrelated physical, biological and chemical treatment processes, making performance predictions difficult. The advent of computer modeling software has given engineers and operators a potential tool to aid in WWTP analysis. In this project, BioWin[tm] was used to examine the performance of the City of Dunsmuir (City) existing WWTP and the performance resulting from proposed WWTP improvements. Two independent numerical models were created to simulate both the existing conditions and the conditions after the proposed improvements are constructed. The primary focus of the improvements is nitrogen removal in its various forms, specifically ammonia, nitrate, and nitrite. The City's influent wastewater and plant operations were characterized using available data collected for its National Pollutant Discharge Elimination System (NPDES) permit, for internal process control, and for special studies. Typical mass concentration ratios (e.g., cBOD/BOD, NH4/TKN, etc.) were used to convert available data into the form required by the modeling software. Where no data existed for a given constituent of concern, literature values were employed. According to model results, the proposed WWTP improvements will yield minimal improvement in effluent quality. The effluent quality achieved at the actual plant, however, may differ from model predictions because the model was unable to fully simulate the actual plant's control scheme. Furthermore, the models' ability to depict process improvements may have been limited by the assumptions made in creating the influent wastewater and plant operations data set. More accurate simulations of the existing and planned WWTP improvements may be realized if constituent and process data expressly tailored to the software's required inputs are collected.

'Professor Bill Gibson is an outstanding man, a great humanitarian and deserving of this well-researched biography about his exceptional contribution to medicine.' - Professor Dame Marie Bashir AD CVO During his distinguished career as an ear, nose and throat surgeon, Emeritus Professor Bill Gibson AO gained a reputation as a world-expert in Meni�re's disease and cochlear implant surgery. In 1984, he restored the hearing of two young women who were some of the first to receive the commercialised bionic ear, pioneered by Professor Graeme Clark and his team in Melbourne in 1978. Three years later Gibson operated on four-year-old Holly McDonell, the youngest child in the world to receive the bionic ear. Over the following decades, he performed more than 2000 cochlear implant operations, making him one of the most prolific surgeons in his field. This fascinating biography tells the story of how Bill Gibson transformed the lives of thousands with the bionic ear.

Adventuring... in Twenty Easy Steps Two youths set out on what is supposed to be a simple cattle drive but turns into the adventure of a lifetime. They have the chance to become the heroes they have always dreamed of... if they don’t die painful, messy, or embarrassing deaths before they can succeed on their quest. A fantasy western adventure of heroism and stupidity.