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Mango is a popular fruit having some special organoleptic features such as excellent flavor, pleasant aroma and taste. Healthy and disease free seedlings are of prime need and basic raw material for establishment of orchards and production of mango. But seedling diseases are one of the important problems in the tropics. Occurrence and prevalence of diseases of mango was studied at Dhaka and Manikgonj in Bangladesh in 2007. Altogether six diseases were recorded during the survey. The diseases, in order of prevalence (incidence and severity) were Anthracnose (51.14% and 37.39%), Alternaria leaf...

Thin film cadmium telluride absorbers with cadmium sulphide hetero-junction partner are promising candidates for high efficiency low cost solutions of solar energy harvesting devices. These devices have band gaps well-suited for effective absorption of sunlight. Most importantly, the materials used in these devices can be deposited in a variety of industry-friendly ways, so that the cost associated with manufacturing is generally lower than other available technologies. Although poly-crystalline CdS has been found to be the best suited heterojunction partner for CdTe solar cell, the...

In the radiation detection system, amplifier is needed from very begging to the end. The first stage in the signal processing chain is the pre-amplifier. This pre-amplifier is usually located as close as possible to the detector to avoid noise pick-up in cables. In the next stage there is the main amplifier. Therefore, amplifier is the most important parts of the nuclear radiation detection system. In this research work a scintillation amplifier has been designed to meet the various requirements in radiation measurement. There are five basic units, which constitute the scintillation...