http://uot.edu.ly/journals/index.php/ljs/issue/feedThe Libyan Journal of Science2023-12-31T09:24:36+00:00Zaineb Omar Ettarhouniz.eltarhouni@uot.edu.lyOpen Journal Systems<p><span class="wz-italic"><span class="wz-bold wz-italic"><strong>The Libyan Journal of science</strong> is a peer-reviewed, open-access journal that aims to publish high-quality papers rapidly and freely available to researchers worldwide. </span></span></p> <p><span class="wz-italic"><span class="wz-bold wz-italic">Libyan Journal of science </span></span>is an Open-Access online and printed journal, that publishes Original Articles, Review Articles, Short Communications and Case Reports in all areas of science and its related subjects.</p> <p> </p> <p> </p>http://uot.edu.ly/journals/index.php/ljs/article/view/866The Effect of Yeast (Saccharomyces cereivisiae) on Growth of Common Beans (Phaseolus vulgaris L.) Plants under Salinity Stress2023-12-31T09:21:56+00:00Amal Ehtaiwesha.ehtaiwesh@zu.edu.ly<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Plant growth-promoting microorganisms (PGPMs) such as bacteria and fungi have some beneficial effects on plants growth and their application in agriculture has increased in recent years. Yeasts are mainly known for their application in the food industry and medical industry. However, the use of yeasts as PGPMs has not been widely investigated; therefore, this study was aimed to evaluate yeast potential role in reducing the injury induced by salt stress. Common beans (Phaseolus vulgaris L.) plants were grown under saline and non- saline conditions (0 and 100mM NaCl), with and without yeast (10g/L) foliar application. The result found that salinity at 100mM NaCl significantly (p<.001) reduced all plant growth traits compared to plants treated with 0mM NaCl. At the same time, the results showed remarkable efficiency of yeast application (P<.001) in promoting beans seedlings growth, increasing plant height, number of branches, number of leave, increasing plant fresh and dry weight, relative growth rate and relative water content. Interestingly, the results indicated that the application of yeast solution alleviate the injury caused by salinity. The result showed significant (p< 0.05) increase in all growth traits of beans. Overall the study conclude that yeast foliar application as environmental friendly, sustainable and efficient strategy can improve plant responses to mitigate the adverse effects of salinity stress.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Sciencehttp://uot.edu.ly/journals/index.php/ljs/article/view/868حساب نسب العضلات الحمراء والبيضاء في أسماك القاروص بساحل مدينة مصراتة، ليبيا2023-12-31T09:24:36+00:00نجلا ء عبد الفتاح الفقيelfaghi.n.a@sci.misuratau.edu.ly<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>The current study included calculating the ratios of red and white muscles in Dicentrarchus labrax, which is a bony fish belonging to the family (Moronidae). Samples for the study were collected from the port of Misrata in the (Qasr Ahmed) area, and the results showed a clear difference in the ratios of red and white muscles for the studied fish in three different regions of the body: the first behind the head (R1), the second in front of the dorsal fin (R2), and the third near the caudal peduncle (R3). The red muscle ratios were lower than the white muscle ratios, with the overall average for red muscle ratios ranging from (0.3-1.7%), while the overall average for white muscle ratios ranged from (86.32-97.16%). The results also indicated that the red muscle ratios increased towards the posterior region near the caudal fin (R3), due to their important functional role associated with swimming mechanics. Meanwhile, the white muscles increased in the regions (R1) and (R2) and decreased towards the (R3) region. Based on the current results and the ratios of white and red muscles in the muscle tissue of the studied fish, which reflects their motor activity, D. labrax can be considered a member of the sprinter fishes, and is of the fighting type. It uses white muscles for sudden movements needed for rapid bursts and escaping enemies, while red muscles are used for regular swimming and endurance.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Sciencehttp://uot.edu.ly/journals/index.php/ljs/article/view/861Half Life of Alpha Decay from A Straight Line Potential Barrier2023-12-31T09:05:12+00:00Mohamed E. Kelabimkelabi@gmail.com<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Following Gamow theory of alpha decay, we assumed that the nuclear interior potential well can be manifested by a new potential well on the form of straight line equation. In this work, the nuclear potential well brought from rigidity to a rather flexible nature, where the slope of straight line can be varied to maintain optimum outputs. The results of our calculations showed good agreement with experiment.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Sciencehttp://uot.edu.ly/journals/index.php/ljs/article/view/865The comparison between the Leonard II theorem and Putzer algorithm for solving some linear differential equations2023-12-31T09:18:47+00:00Muna E. AbdulhafedMuna.am2016@gmail.com<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Homogeneous Linear ordinary differential equations are a class of differential equations having many important uses in engineering and sciences. This research discusses a comparison between Via-Leonard II theorem and Putzer algorithm theorem for solving some homogeneous linear ordinary differential equations. This study shows the existence of unique solution, and the calculations are simpler and faster than in traditional techniques.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Sciencehttp://uot.edu.ly/journals/index.php/ljs/article/view/862Comparison of Physicochemical Properties of Edible Libyan Olive Oils and other international Olive Oils2023-12-31T09:10:47+00:00Saleh ElmezoughiSaleh.elmezoughi@uob.edu.ly<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>The purpose of this study was to evaluate the physicochemical characteristics of olive oils. The samples collected from three different olive rom Benghazi city. In addition, Tunisian and Italian olive oil samples were used as compared samples. The Moisture, %FFA, acid value, saponification number, ester value, peroxide values, and their applicability as edible oils were examined. Based on our results the physio-chemical characteristics of olive oils from Benghazi presses have a significantly high acid value of 19.98 and 10.97 besides, % FFA was ranged from 5.527 to 10.064% of oleic acid for sample No. 3 and sample No. 1 respectively, and the B3 sample has a maximum moisture content of 0.47% m/m and the minimum content of moisture 0.0882%m/m for Italian sample. Meanwhile, the ester values varied between 164.89 to194.53 mg KOH/g, and the peroxide values ranged between 0.527 to 0.784 Meq O2/kg and have a saponification value from184.884 to 195.922. The concluded results were in agreement with the International Olive Oil Council's (IOOC) permissible ranges, with exception for the acid value and free fatty acid percentage in olive oil presses from Benghazi city.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Sciencehttp://uot.edu.ly/journals/index.php/ljs/article/view/864 تقدير بعض العناصر الثقيلة في عسل النحل شرق/غرب/جنوب ليبيا وتحديد جودته كمؤشر على تلوث البيئة 2023-12-31T09:15:34+00:00المشري أحمادي أحمد يحيmas.yahia@sebhau.ud.ly.ly<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>In this study, four samples of honey were collected from three different regions in Libya, including Benghazi, Gharyan, and Sebha, as well as a test sample. These samples were subjected to tests in order to ensure their quality, and they did not contain a high percentage of heavy metals. The pH values, estimation of moisture content, ash content estimation, and electrical conductivity estimation are carried out. The results obtained showed that there were differences between all samples. The pH values for all samples ranged from 4.13 - 5.32, the moisture content from 10.47 - 15.11%, the ash content from 0.5- 1.6%, and the electrical conductivity from 0.14 - 0.73 mS/cm.Furthermore, the funding showed that the cadmium concentration in honey samples ranged from 0.08 to 0.0293 ppm. By comparing these results with the internationally permissible rates, it was revealed that all samples were within the permissible rates with the exception of sample A3 (the sample collected from Benghazi). This difference is due to the differences in the environment surrounding each sample, such as the plant source, geographical location, topography, and climate of each region. As well as the difference in the chemical composition of honey from one, sample to another and according to the type of food used. While the rest of the heavy elements in all study samples were within the permissible international rates.</p> </div> </div> </div>2023-12-31T00:00:00+00:00Copyright (c) 2023 The Libyan Journal of Science