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To my knowledge, technologies for biogas or bio-methane production from various bio-substrates through anaerobic digestion or their co-digestion are available in the literature. But very little literature is available on the optimum conditions for anaerobic digestion and/or their co-digestion. Therefore, a total of six studies are mentioned in this document to address this issue. Among of these a baseline survey and 5 lab based experiments were carried out (i) to investigate the potentials, status, problems, barriers and future needs for implementation and dissemination of biogas plants in...

Bangladesh; a vulnerable country in the world, not only affected due to various types of natural disaster, also for inadequate socio-economical supports to cope with adverse effects of calamities. Almost in every year, the coastal regions affected by cyclone, caused huge damages. About 30% peoples live in 19 coastal districts of Bangladesh have no place to attain safe-shelter during the catastrophic situation. It is impossible for ensuring cyclone center for all furthermore, providing adequate cyclone shelter may create another problem rather than solving, like: (i) Huge monetary...

The change of urban land use structure may bring a huge change in urbanization. There are three types of Paurashava in Bangladesh. This is a study on urban land use structure of 'C' category Pourashava of the southwestern part of Bangladesh presenting the land use scenario of Chalna, Paikgasa and Morrelganj Pourashava. The study also represents the land use trend, change of land use element, decade wise urbanization rate, coefficient of urbanization etc. The urbanization of these three Pourashavas compared with the conventional land use model. On the basis of comparison a generalized land use...