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Ulexite is a sodium calcium boron hydrate used in producing compounds. Its chemical formula is Na2O2CaO5B2O316H2O, and it superabounds in Turkey. One of the significant boron compounds derived from boron minerals is boric acid. The aim of this study is to produce boric acid in the wake of interaction of ulexite with hydrochloric acid solution, and offering an alternative process to producing boric acid by forming the mathematical model of this processing. Full factorial design method has been used in the study. Some of the parameters used in the process have been made steady, and the others have been accepted as variable factor in formation of mathematical model. Invariant parameters are granule size, reaction time and stirring speed. Hydrochloric acid concentration has been accepted as temperature and solid to liquid ratio variable factors for the formation of mathematical model. Primarily, the mathematical model of the process and three-parameter full factorial design have been...
An attempt to understand the water quality of Michika towns and Environs was carried out under the water quality index (WQI). Physico-chemical parameters of 15 water samples collected from both Hand-dug wells and Boreholes were determined using standard procedures. The values of WQI have been affected by concentration of dissolved Ca++, Fe++, and Cl- in the water samples. The value ranges from 54.89 – 99.02 in the hand dug wells which indicate poor to very poor quality except Ghuzukwi. But all the value range for borehole sources indicates a good status with WQI range of 22.99 – 26.76. The quality of water sampled from well were not suitable for human consumption without proper treatment. Model average representations of each parameter for the area are also presented.
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Keen eyes for manufacturing On the production floor, companies continue to seek ever greater safety, security, and product quality. RICOH’s latest “keen eyes” were created to support such advances in reliable manufacturing. These new series of high-quality factory automation (FA) cameras and lenses bring together all the camera know-how and optical technology that RICOH has developed over many years. Moving forward, we will support even higher production-line efficiency and reliability by continuing to develop the best high quality lenses optimised for FA cameras and by combining an extensive range of cameras and lenses in a way that ensures a dependable image solution. All prices exclude VAT. This price list supercedes all previous price lists. RICOH reserves the right to change pricing and product specification without notice.
An easy-to-use entry level digital SLR camera, offering high-quality performance and outstanding value for money PENTAX RICOH IMAGING COMPANY, LTD. is pleased to announce the launch of the PENTAX K-500 digital SLR camera. With its solid basic specifications and outstanding value for price, this new model is designed to extend the joy of high-quality digital SLR photography to everyone. The PENTAX K-500 was developed based on the PENTAX K-50 digital SLR camera (launched in June 2013). This cost-efficient model inherits such remarkable features as a compact, lightweight, easy-to-hold body; high-resolution image reproduction with approximately 16.2 effective megapixels; super-high-sensitivity shooting at ISO 51200; and high-speed continuous shooting at approximately six images per second, making it an ideal imaging tool for all casual digital photographers. Major Features 1. High-resolution, super-high-sensitivity shooting at ISO 51200 The K-500 features the state-of-the-art CMOS image sensor with a large image-capturing area measuring 23.7mm by 15.7mm, to assure high-speed image data readout. This image sensor is coupled with PRIME M — the same high-performance imaging engine incorporated in upper-class models — to deliver super-high-resolution, rich-gradation digital images with approximately 16.28 effective megapixels. The K-500 also offers super-high-sensitivity shooting at a top sensitivity of ISO 51200, allowing the photographer to handhold the camera for beautiful nighttime snapshots.