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A design of a geothermal heat pump heating, ventilating, and air conditioning system has been done for XYZ Indianapolis School by using renewable energy. Geothermal energy is one of the important energies that has proved itself in air conditioning systems all over the world. The design was classified in three points as follows. Using borehole heat exchanger (BHEs) vertical type, heat pump and all its equipment such as mechanical room, pipes, and fitting design to cover the total load of the school the results were 20 boreholes and a total flow rate of 60 gpm (3 gpm/bore) of 20 % propylene solution, and spacing 20 ft with 1.1 Hp and 6.5 in impeller size. For individual borehole design, the results were 15 boreholes and a total power consumption 1.1 kW. For the ventilation design, the peak load for heating is 42779 Btu/hr, and for cooling, it is 47779 Btu/hr. There are 4 boreholes, a 0.5 hp electric pump with a flow rate of 10 gpm a 40ft of H2O pressure drop, and a 10 hp fan integrated with a water-to-water heat pump. The total load we assumed for the heating supply in class 6 and the corridor are 10% and 25 %, respectively. The thermal resistance was calculated for each case according to the fluid flow rate. The ventilation load of the school is designed separately from the heating and cooling loads and connected to a water-water heat pump that will make the system work with high efficiency. Finally, we designed this project using Geothermal Energy, which is cleaner than conventional energy.

A new record for Leptadenia arborea (Forssk.) Schweinf. is reported for the first time in the flora of Libya. This species was collected from Ariggiba region (110 km southwest Sabha city). A full description and habitat information on the plant are provided. A brief discussion about the most important traits of this species is presented.

:Abstract

Smoking causes about 6 million deaths annually, increases the risk for many diseases and alters hematological parameters. Thus, the aim of this study was to evaluate the negative impact of cigarette smoking on the hematological parameters of healthy smokers in Libya. A total of 145 smokers and 145 non-smokers, with age range 39-45 years, were recruited. Blood samples were collected from each participant and were analysed for complete blood count. The obtained results were statically analysed using descriptive statistics and ANOVA. The mean for all study variables for smokers (except for MCHC) was greater than that for nonsmokers. The coefficient of variation (CV%) showed that the smokers group was more homogeneous for most variables than the non-smokers group, except for BMI and LYMP. The results of ANOVA test showed that only in the case of MCHC the non-smokers had a significantly higher mean (p < 0.05). For other variables, the smokers had significantly higher means (p < 0.05), except for the RBC, where the mean was non-significantly higher compared to the non-smokers. There was no statistically significant effect for the age variable or for the interaction between smoking and age on all variables. In conclusion, the study revealed that cigarette smoking has a significant impact on most haematological parameters; confirming that smoking has severe adverse effects on most haematological parameters