To date, the world population stands at more than 6.5 billion people, and it is expected to reach 9 billion by 2050. Food production will need to increase at the same rate or more to feed the exploding population. It is now more to one decade since the first transgenic plant was generated experimentally. During that period there have been dramatic advances in our understanding on both basic and applied aspects of plant biology. Twenty years ago, results of 1st experiment describing the successful transfer and expression of foreign genes in plant cell was published. Since then, transgenic plants have become an essential tool for studying plant biology and the development of novel plant varieties.

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The paper discusses the factors that influence the gas pressure of an HHO generator product. The purpose of this research is to study the effect of electrodes, electric current, and NaHCO3 concentration on HHO gas pressure. Using pure experimental methods, the electrode material is made of aluminum and brass. rectangular shape with a size of 250 mm x 400 mm, with a gasket bulkhead. To produce HHO gas using electric current 20A, 30A, 40A, and 50A. and NaHCO3 catalyst concentrations of (5%, 10%, 15%, 20% and 25%). Gas pressure measurement using acetylene gas regulator. The results showed the greater the electric current, the higher the gas pressure. The pressure produced at 20A is 0.297 Bar while the electric current of 50A is 0.458 bar. Whereas for copper electrodes, at an electric current of 20A produces a pressure of 0.539 Bar while at an electric current of 50A, a pressure of 1.588 bar.............

KEYWORDS: Electrodes, Electric current, catalyst, HHO Generator.

The quest for solution to the high cost of energy and the environmental impact emanating from century long overdependence on fossil fuel has propelled several research efforts in renewable alternative energy sources. Nigeria with an annual average of global horizontal irradiation of about 1.4kWh/m2 in the coastal region, 2.4kWh/m2in the Northern region, and seven (7) or more hours of daily sunshine significantly demonstrates solar thermal potential. Solar energy can provide sufficient energy to heat up water to a desired temperature for both domestic and industrial applications with cost reduction in energy and its associated consumption. The study presents a review of literatures on Solar Water Heating (SWH) as well as Solar Thermal Energy Storage Systems (STES).............

KEYWORDS: Solar Water Heating, Solar Thermal Energy Storage, Thermal System Load Demand, Modeling and Simulation.