Samarra Journal of Engineering Science and Research

This paper aims to explain the effect of the (COVID-19) virus on the planning of the contemporary cities because its effecthas become ourcity skyline. And the urban design of city has changed, and in response to public health crises, this epidemic is now joining a long list of infectious diseases such as the outbreak of cholera, malaria and the Spanish flu of 1918 in New York and Mexico City or the Ebola virus disease in West Africa in 2014, which of course has a lasting impact in places Urbanization, where laboratory and hospital building for sanitary work understands the dimensions of urban planning for pandemic preparedness .the problem of this paper is to answer this questions Why can COVID-19 change how cities are studied ? and how we live in them? This appears to be the first time that urban settings and people have increased the risk of a pandemic

The presented work examines the dynamic model as well as the control related to the multiple-effect evaporator through conducting 3 control strategy types for the evaporation of the caustic soda solution. Neural, fuzzy, and PID are the control techniques in this work, while the results specified that excellent enhancement for caustic soda system was done in the case when a fuzzy logic with 7 functions of membership and neural predictive control was utilized, since such approaches were more adequate, less integral absolute error, less offset value and low overshoot.

The composition of pharmaceutical, which is high concentration of organic matter, microbial toxicity, high salt, and difficult to biodegrade(Y Guo et.al 2017). Pharmaceuticals are biologically active compounds which are used to impart therapeutic effects in humans and animals. These pharmaceuticals compounds are contaminants of emerging concern due to their heavy use and release into the environment. Their persistence in waterways anddrinking waterhas gained attention across the globe and among lawmakers, regulators, and the public, because they are active andoften escape from thewastewater treatmentplants (WWTPs) undisturbed or in transformed states. Most of the biological treatment technologies are not specifically designed to remove the pharmaceuticals(SridharPilliet.al 2020). In This paper the methods of pharmaceutical wastewater will reviewed

This design provides two absorption band with an absorption capacity of 99.98%.In this study presents analytical results using the CST program for a very simple design of an electromagnetic wave absorber with a negative refractive index, a copper X-shape printed on an insulating layer separating it from a flat ground layer of copper. This absorption is due to the dipole oscillation. Also, controlling the shape dimensions and thickness of the insulating layer leads to good results in the synthesis of the resonant frequency that contributes to the applications of energy collection and protection from the effects of electromagnetic waves. The results gave the highest value of absorption with h = 1mm) and by selecting a proper value for g = 1 mm, the proposed design obtained the good absorption results. It is also worth noting that the design can be developed to operate in a wide range of frequencies such as microwaves, terahertz, up to optical frequencies, which may contribute to potential applications in many engineering and optical technologies.