The new concrete Standards give rules for in-situ checking if the hardened concrete in structure achieved the designed compressive strength according the request the class of concrete. Different concrete elements in structure request the different access during the examinations and different analytical analysis. Using the different examination methods will be the main aim on evaluations of concrete strength, always in comparing with requested design class. Core testing and other nondestructive methods assessing strength of surface concrete are generally less reliable than cores, but less damaged will used for final evaluations. More parameters influence the properties of concrete as the type and size of aggregates, cement type and content, placing the concrete, form work parameters. The different factors analyzing in this paper are combine in the measurements from taking the core samples and results with hammer Schmidt, ultrasonic or other alternative methods. Also the evaluations of compressive strength for different concrete elements in different positions/different layers/ will be the detail expressed in analytical form, because in situ test isn’t possible to implement.

A comparison between coating frictional resistances of several ship hulls has been conducted by experimental studies (Foul Release and conventional paint) in the unfouled conditions in Hydrodynamic open water tests in a lake using a ship model test. Models are completely similar, in order to eliminate other factors of resistance such as wave making resistance and viscous pressure resistance. Foul Release systems based on silicon offer a low surface energy and smooth surface that prevents adhesion of fouling organisms on underwater hulls. Wall roughness measurement was carried out by roughness analyzer and there is not much difference between Foul Release and conventional paint roughness. The results indicate that model with low surface energy has lower resistance compared to model with higher energy surface.

The industrial symbiosis (IS) has been becoming increasingly popular from last decade of last century because of its prospect towards safeguarding environment and reducing usage of virgin materials through recycling. After emergence of symbiotic network, industrial clusters followed different approaches and faced different difficulties at their uncovering stages. Some successful symbiotic network showed great promise in reducing usage of raw materials. Policy regarding IS has a tremendous impact on the genesis, emergence, and development of it.. In this study authors tried to review already followed approaches, benefit obtained and problem faced by the industrial owner along with generalized policy framework they needed at the very early stages of IS network. However, two approaches are followed by industries –planned approach and spontaneous approach though there are factors that helped to initiate symbiotic network. Obtained benefits from IS network can be classified into three categories and these are-environmental benefit, social benefit and economic benefit. On the contrary industrial networks also faced some barriers i.e. technological barrier, economic barrier, informational barrier, organizational barrier, regulatory barrier, uncertainty and risk of initiating IS network. Thus policies were formulated to ensure sustainability of projects and to overcome barrier. Policy initiatives helps to bring the cooperatives under same industrial symbiotic network, shape a symbiotic network and patronize the symbiotic networks by providing incentives. Industrial networks only sustains when all favorable conditions are easily available to those otherwise many prospective networks will fail to see the light of success.

Geoinformatics approach is increasingly used to monitor land use change as well as forest fragmentation due to availability of Landsat satellite data. In Bangladesh many initiatives have been taken to prepare land use maps but forest fragmentation modelling is quite new. In this research, geoinformatics approach is thoroughly used to determine land use changes of Chunati Wildlife Sanctuary from 2005 to 2015. Three time frame data sets i.e. 2005, 2010 and 2015 were used for assessing forest fragmentation. Forest intactness is measured by the proportion of four spatial patterns i.e. core, perforated, edge and patches. Previously tree cover and density was considered as the yardstick to measure forest health and ecosystem but recent studies regarding forest fragmentation have uncovered many harmful impacts of it. However, in this research authors observed 26.44% decrease in forest cover, 37.56% decrease in water bodies and 56.05% increase in cropland, 42.52% increase in barren lands, 69.01% increase in afforested area in between 2005 and 2010. Overall condition was leading to substantial forest fragmentation. Due to initiation of restoration activities positive results have come out which are 18.86% and 38.01% decrease in cropland and barren land respectively accompanied by 58.92% increase in forest between 2010 and 2015. As forest fragmentation is highly correlated with conversion of forest into non forest uses, core areas and perforated areas significantly reduced to 503 hectares and 1212 hectares respectively in between 2005 and 2010, associated with a slight increase of 343 hectare edged area forest whereas overall forest cover reduced signifi cantly. Later, positive changes result 503 hectare increase in core areas along with 762 hectares decrease in patched forest from 2010 to 2015 which is surely a good sign.

In this study, Taguchi L8 orthogonal array design was applied to determine the most polluted meteorological conditions in Kocaeli. Meteorological factors were decided as temperature, relative humidity and rainfall in two different levels. Larger is better function was applied for calculation of signal-to-noise ratios. The impact ratios of meteorological factors were also determined by using Taguchi model. PM10 concentrations were predicted by the model. Results of the model showed that predicted and obtained concentrations were closer to each other. These calculations and results show the success of Taguchi model in this study.