Printing ISSN2708-857X
Online ISSN 2708-8588
Online ISSN 2708-8588
Abstract... The aim of this research was to extract the invertase enzyme from carrots, turnip and radish present in the local market and to determine some of its properties. The crude extract was prepared using an electric juicer and to get rid of sediments, the juice was centrifuged at 4000 revolutions / minute for 15 minutes, and using special solutions and equations that estimated the enzymatic activity. For invertase in the three plants, the carrot extract showed the highest enzymatic activity (28.8 u/ml) Therefore, the carrot plant was chosen to be the plant under study to characterize the invertase properties The enzyme is (35C), and the invertase enzyme has shown thermal stability at (60C) even after 15 minutes, then the enzymatic activity decreased, and through this study it was found that the invertase enzyme could not maintain its effectiveness when stored at room temperature for more than 5 days
Abstract... This field study was conducted to test the efficiency of using a dry yeast solution on some characteristics of vegetative growth, such as plant height, number of branches, number and area of leaflets, shoot and root wet and dry weight, number of seeds, and productivity of bean plants. The plants were treated after 30, 40, and 50 days of cultivation with concentrations of 0%, 5%, and 10% by spraying on the leaves and irrigation around the roots, overlapping between them P= 0.002 10%, while there were no significant differences between concentrations of 5% and 10%, where the average stem length was 48.0 cm at concentration 5%, 48.67 cm at concentration 10%, and 44.50 cm at control, and it was also concluded that there were significant differences in leaf area. P= 0.016 Between the concentrations of 5 and 10% by 9.91 and 2.50, respectively, and the percentage of leaf area in the control was 7.42%, there was also a significant difference in the number of leaflets P= 0.057, as the average number of leaflets at the concentration was 5 and 10%, 316.0 and 332.67, respectively. While the number of leaves in the control was 187.67. However, for the rest of the studied traits, the treatment with dry yeast solutions for the bean plant did not record any significant differences.
Abstract... This study was conducted to evaluate the susceptibility of five economic olive cultivars (Frentoi, Chemalali, Corantina, Leccino, and Endori) to infection by the stone scale insect Pollinia pollini Costa at the Sidi El-Masry Research Station in Tripoli during the year 2022 under the rain-fed system. Four trees of each species were chosen randomly, with four samples for each tree. The study showed that there were significant differences between the varieties for the numerical density of nymphs with a value of 0.007, the highest of which was the Frantoi variety with an average of 56.6 nymphs, followed by the Shamali, Quarentina, Leccino, and Endori varieties with averages of 23.6, 21.8, 16.8 and 4.5 nymphs, respectively. The significant differences in numerical density between the adult varieties were recorded at a value of 0.014, the highest being the Frantoi variety with an average of 50.7 nymphs, followed by the Chemalali, Quarantina, Andori, and Leccino varieties with averages of 22.8, 21.9, 14.6, and 8.0 nymphs, respectively. The results showed when the two factors (variety and seasons of the year) interacted that there were significant differences with a value of 0.042 for the numerical density of nymphs between the varieties. The highest was the Frantoi variety with an average of 139 during the month of September, followed by Al-Shamali with an average of 51.8 during the month of November. The rest of the varieties did not record any significant difference during the months of the year as a result. High l.s.d value = 44.24. With significant differences in numerical density between the adult varieties with a value of 0.033, the highest was the Frantois variety with an average of 105.5 during the month of February, and no significant differences were recorded between the Shamali, Leccino, Quarantina and Andori varieties during the months of the year as a result of the high L.S.D value = 39.55.
Abstract... In this study, geographic information system used in the field of environmental planning to choose the most appropriate sites for burying waste in the city of Shahat by applying spatial analysis systems and determining some environmental standards and criterion. Including land uses, where the land cover classified based on the satellite image (Sentinel 2) for the year 2022, from which a digital map produced and divided the study area into four categories: (forest, agricultural, bare, residential). Bare land given the highest value 2, while the rest of the other classifications given a value 1. The second criterion is the distance from residential complexes where the spatial buffer (Buffer) used to determine the distance from residential areas. Five levels were determined, and the most appropriate distance from residential complexes was from 2000-2500 meters and given the highest value of suitability degrees, while the worst was a distance of less than (500 meters) which given the lowest value. The third criterion is distance from main roads, the most appropriate distance was determined to be approximately (500-1000 metres) which had the highest value, while the worst was (0-250 metres). The last criterion is the topography and Earth’s surface slope, a map of the slope was produced by using the Digital Elevation Model (DEM) and classified into (5) classification units: flat to semi-flat (0-5%) given the highest value, while the steep to very steep slope (<25%) given the lowest value. Spatial analysis were conducted based on stratified modeling of maps in a manner that allows analysis for the spatial places. The study produced a final map in which the proposed sites for waste landfills identified; a classification of five categories obtained according to the degree of its suitability as a chosen site for burying wastes, which varies between the most suitable and the worst. This study has identified two of the most suitable sites for landfilling with an appropriate distance from residential communities and road networks, the sites characterized by a flat to almost flat slope. The first landfilling site is located northeast of the city of Shahat (Satiya area), its area is about 14.60 hectares and its size is about 2,930,000 m³, the duration of use of the landfill is about 32 years starting from 2025. The second site was located east Al-Faydiyah area, its area about 2.75 hectares and its size about 550,000 m³, and the duration of use of the landfill about 8 years starting from 2025.