مجلة علوم البحار والتقنيات البيئية最新文献

{"title":"Effect of Foliar Spraying with Some Commercial Bio-Stimulants on Physiological Responses of Eggplant (Solanum melongena L.)","authors":"Abdelnaser T. Abed, M. Fahej, E. Hadia","doi":"10.59743/jmset.v9i1.146","DOIUrl":"https://doi.org/10.59743/jmset.v9i1.146","url":null,"abstract":"This study was undertaken to determine the effects of two bio-stimulants (Humic Power and Amino 24) on the growth and nutrient contents in eggplant (Solanum melongena L.) cv. Master F1 was grown under greenhouse conditions using a randomized complete block design with three replications.  Different levels of Humic Power were applied (control, 3 mL/L, and 5 mL/L) and Different levels of Amino 24 (control, 1 mL/L, and 2 mL/L) were sprayed on the foliar every 15 days throughout the study period. The highest vegetative growth was obtained with eggplant supplemented with foliar Humic Power (HP.2) with Amino 24 (AM.2), followed by plants treated with Humic Power (HP.1) with Amino 24 (AM.2) compared to untreated plants. There was a significant interaction between the bio-stimulants (Humic Power and Amino 24) for the content of macroelements in eggplant plants, except for the potassium content, where the difference was non-significant. On the other hand, the highest content of macro elements (NPK) was obtained at Humic Power (HP.2) and Amino 24 (AM.2), respectively as compared to the control.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128917679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"دراسة تعريف وتواجد النوع Cymbula safiana (La marck, 1819) من بطنيات القدم على الشواطئ الصخرية بالساحل الغربي الليبي","authors":"حنان الهادي البب","doi":"10.59743/jmset.v8i2.66","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.66","url":null,"abstract":"تتواجد Cymbula safiana المهددة بالانقراض حسب منظمة United Nation Development Program (UNEP) في الشواطئ الصخرية بالساحل الغربي الليبي للبحر الأبيض المتوسط، والهدف من هذه الدراسة هو وصف وتعريف لتواجد النوع C. safiana في بعض شواطئ منطقة الزاوية من ساحل البحر الأبيض المتوسط. أُجريت خمس رحلات لشواطئ (جودائم، ديلة \"الزاوية المدينة\"، المطرد، صرمان وصبراتة) من شهر ديسمبر 2018 إلى أبريل 2019. تم جمع 101 عينة من بين مناطق المد والجزر بطريقة التجميع العشوائي من كل شواطئ منطقة الدراسة. تشير النتائج بأنه سُجل تواجد النوع C. safiana في أربع شواطئ محل الدراسة، وكانت كالتالي في شاطئ جودائم بنسبة 19.8%، شاطئ ديلة 39.6%، شاطئ صرمان 26.7%، وشاطئ صبراتة بواقع 13.9%، مع عدم تواجده في شاطئ المطرد قد يكون لكثرة الانشطة التجارية والصناعية في حفر الشواطئ الصخرية. ورغم أن هذا النوع اللافقاري يعتبر مهددا بالانقراض في الشواطئ الصخرية لساحل ليبيا، إلا أنه نادرًا ما كان هذا النوع موضوعًا للدراسة في شواطئ الساحل الليبي، ولهذا توصي نتاج هذه الدراسة بإجراء دراسات مستفيضة للنوع وتوزيعه على طول الشاطئ الصخري لليبيا.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126950214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"دور نظم المعلومات الجغرافية في حماية البيئة ومراقبة التلوث: أنموذج عملي (الشركة الليبية للحديد والصلب)","authors":"عبد العظيم سالم معيتيق, وسام محمد الترجمان, جمال محمد الجمل","doi":"10.59743/jmset.v8i2.68","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.68","url":null,"abstract":"تتمتع الشركة الليبية للحديد والصلب بأهمية كبرى في الاقتصاد القومي لما توفره من مساهمة كبيرة في الناتج المحلي الإجمالي، إلا أن أحد التحديات (إن لم يكن أهمها) التي تواجه الشركة اليوم تحتم على إدارتها إدراك أن أحد الجوانب المؤثرة على استمرارية الشركة في القيام بدورها هو العمل على الدفع باتجاه مشاريع تطوير أنظمة المعلومات الحديثة بمختلف أنواعها. وفي ضوء الدور الذي تلعبه المعلومات في هذا العصر وما لها من أهمية في الإدارة الحديثة للمؤسسات الكبرى فإننا لا نبالغ إن قلنا بأن نجاح أو فشل القرارات التي يتم اتخاذها في أي مؤسسة اليوم يعتمد بالدرجة الأولى على دقة وموثوقية المعلومات التي تبنى عليها تلك القرارات. ونظرا لطبيعة عمل مصانع الشركة وتأثيرها وتأثرها المباشر بالبيئة المحيطة بها فقد رأينا أن نقدم في هذه الدراسة خطة استراتيجية لإدارة البيانات المناخية والبيئية داخل الشركة الليبية للحديد والصلب.تساهم هذه الدراسة من الناحية الأكاديمية بإعطاء قالب عام لتصميم نظم للمعلومات الجغرافية. أما من الناحية العملية، فسنقدم نموذج لتطبيق جيومكاني لصالح إدارة البيانات المناخية بالشركة. هذا التطبيق يطور آليات عمل الإدارة وذلك باستخدام نظم المعلومات الجغرافية وتقنيات الاستشعار عن بعد لبناء أنظمة فعالة لرصد الوضع البيئي القائم ومصادر التلوث والأخطار البيئية المحتملة. الأمر الذي يسهل على الإدارة اتخاذ الإجراءات المناسبة للتخفيف من تلك الانبعاثات والملوثات. كما تقدم هذ الدراسة عدداً من المقترحات والتوصيات لتطوير العمل بالإدارة وذلك عن طريق إنشاء قاعدة بيانات جغرافية لكل القطاعات والمصانع لتسهيل الوصول للمعلومة المطلوبة في أقصر وقت وإتاحة إمكانية التنبؤ بالمشاكل البيئية المحتملة بحيث يمكن وضع الحلول لها قبل وقوعها.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132926321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"دراسة لأهم المظاهر الجيومرفولوجية للسواحل البحرية بمناطق (الخمس، كعام، زليتن)، ليبيا","authors":"إسماعيل الفرجاني الشوشان, صلاح الدين موسى القرمادي","doi":"10.59743/jmset.v8i2.67","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.67","url":null,"abstract":"تضمنت الدراسة الحالية توثيق أهم المظاهر الجيومرفولوجية بمناطق محددة لسواحل مدن الخمس وكعام وزليتن الواقعة شرق مدينة طرابلس. تم استخدام كاميرا رقمية عالية الدقة من نوع Nokia وذلك لأجل الحصول على صور عالية الجودة. اشتملت الظواهر الجيومرفولوجية بمناطق الدراسة على نوعين رئيسيين وذلك حسب العمليات الجيولوجية التي أدت إلى نشأتها، الظواهر الناتجة بفعل الترسيب البحري (depositional features) والظواهر الناتجة بفعل عمليات النحت (erosional features)، تميزت سواحل مدينة الخمس في النقاط المدروسة بانبساطها وقلة ارتفاع الجروف المطلة عليها والتي تتلاشى في معظم الأحيان لتفتح المجال أمام منطقتي الشاطئ والبلاج فتصبح أكثر اتساعاً. أما سواحل منطقتي كعام وزليتن بالأخص فقد تميزت بانحدارها وقلة انبساطها نتيجة لتدرج منطقة الساحل واقتراب الجروف العالية الارتفاع لخط الساحل مما نتج عليه ضيق نطاق كل من الشاطئ والبلاج. كما أدى ارتفاع هذه الجروف وشدة انحدارها وتكوينها الصخري الهش والغير متماسك وشدة تأثير أمواج البحر وخاصة في فصول الشتاء إلى حدوث الانهيارات والانزلاقات وكذلك عمليات الزحف لهذه الجروف؛ الأمر الذي نتج عليه تراجعها وانتشار الكتل والفتاتات الصخرية عند أقدام هذه الجروف لتصبح عرضة لفعل التيارات البحرية والأمواج على نطاق الشاطئ أو البلاج. بصفة عامة، يمكن اعتبار سواحل مدينة الخمس سواحل بحرية منخفضة تغطيها الرمال والحصى الصغير وبعض الكثبان الرملية بينما يغلب على سواحل منقطتي كعام وزليتن المرتفعة (coasts of emergence) الغطاء الصخري  (rocky beaches).","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122599635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation of the Emission and Dispersion of Gaseous Pollutants Emitted from Power Plant and the Potential Environmental Impacts: A Case Study","authors":"Fatma A. Slama, M. Aboabboud, H. Ibrahim","doi":"10.59743/jmset.v8i2.64","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.64","url":null,"abstract":"The polluting gas flow and emission levels emitted from the Zawia combined Power Plant (ZCPP) in-northwestern Libya were estimated using an Aspen-Hysys v.8.0 simulator which was performed for the plant based on the actual operating conditions of the power plant in steady state operation. Then, the air dispersion modeling tool (Disper V4.0 software) was used to estimate the concentration of these pollutants emitted throughout the surrounding areas, and the WAR algorithm v.1.0.17 was used to check the potential environmental impacts of the gas emissions from ZCPP. Simulation results for the studied power unit showed that the thermal efficiency and net energy output are equivalent to the realistic values of the unit, which indicates that the estimated emission concentration is identical to the real emissions from this unit and that the primary emitted pollutant is nitrogen oxides, whose values exceeded the selected international standard limits. Based on the seasonal climatic conditions of the region, the results of simulating the dispersion of nitrogen oxides showed that the emissions reach areas far from the emission source with high-level concentrations, which may have negative effects on the environment and public health according to WHO standards and previous studies related to air quality. According to the current scientific literature, the results of the eight indicator values derived from the WAR algorithm of the total production rate confirm the potential environmental impacts of the power plant per hour as environmentally harmful. Moreover, the amount of carbon dioxide emitted from the combustion process increases the greenhouse effect. The main conclusion reveals that the atmospheric air of the surrounding regions of Zawia city is polluted with nitrogen oxides resulting from the studied power plant as one of the primary sources of nitrogen oxides in the study area, which may have a negative impact on the environment and the health of the inhabitants.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence of Ceratothoa capri (Trilles, 1964) in Pomatomus saltatrix (Linnaeus, 1766) in the Libyan Coasts","authors":"Zahra S. Kashlut","doi":"10.59743/jmset.v8i2.61","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.61","url":null,"abstract":"Ceratothoa is an important ectoparasite affecting many species of commercial fish. 40 individuals of wild bluefish, Pomatomus saltatrix (L, 1758), were collected during October and November 2022. One pullus Cetratothoa capri parasite was found inside the bluefish gill, P. saltatrix from the coasts of Libya, in the southern Mediterranean determination, the infection rate of the fish was 2.5%. This is the first study from Libya on the presence of C. capri in bluefish.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130709216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FEM Simulation as a Tool for Planning and Optimizing the Rubber Pad Forming Process","authors":"Muamar M. Benisa, G. Senussi, Abdalla S. Tawengi, Abdelnasir M. Shtewi","doi":"10.59743/jmset.v8i2.65","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.65","url":null,"abstract":"Manufacturing press-formed metallic components by conventional methods needs a burdensome trial-and-error process to set up the technology, which success depends, largely, upon the operator’s skill and experience. The finite element (FE) simulations of sheet-metal-forming processes assist the manufacturing engineer to design a forming process by shifting the costly press-shop try-outs to the computer-aided design environment. The purpose of applying numerical simulations of a manufacturing process such as rubber-pad forming is to avoid the trial-and-error procedure and shorten the development phases when tight times-to-market are demanded. The main aim of the investigation presented in this paper was to develop a numerical model that would be able to, successfully, simulate a rubber-pad forming process. The finite-element method was used for blank- and rubber-behavior predictions during the process. The study focused on simulating and investigating significant parameters (such as forming force and stress and strain distribution in a blank) which are associated with the rubber-pad forming process, also the capabilities of this process regarding the manufacturing of aircraft wing ribs and ships. As a result, the stress and strain distribution in a blank as well as the forming force were identified. The experimental analysis of a rib with a lightning hole showed a close correlation between the FE simulations and the experimental results.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115388921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects Sequential Usage of Coagulations (Ferric Chloride or Alum) and Fenton's Solution or Biochar on Removal Phenolic Compounds and Organic Load from Olive Mill Wastewater","authors":"K. M. Bushnaf, A. Okasha, Sulayman Omar Alhuweemdi","doi":"10.59743/jmset.v8i2.63","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.63","url":null,"abstract":"The chemical properties of the wastewater of 17 olive mills in the area between Al-Dafniyah into Qaraboli in the west of Libya were studied and chemical coagulants such as alum, ferric chloride, chemical oxidation, and biochar were used to remove the organic load and phenolic compounds from this water. The results showed that the wastewater of the olive mill is highly acidic with an average pH of 5.15 and its high content of solids reached 192 g/L, while the average of dissolved solids was 63.5 g/L and the organic solids were about 90% of the total solids and the average of chemical oxygen demand is 104.9 g O2/L, and the concentration of phenolic compounds is high and it was 1.86 g /L.  In addition, the results showed that the usage of Ferric chloride as a coagulant gave higher removal percentage of phenolic compounds, dissolved solids, and chemical oxygen demand in comparison with Alum in the pH range of 6-9. The removal percentage was higher in alkaline pH, especially for phenolic compounds. Moreover, increasing the amount of the coagulant from 2 to 16 g/L enhanced the removal of phenolic compounds and chemical oxygen demand, while the removal efficiency of dissolved solids was weak, which required the use of chemical oxidation and adsorption on biochar to improve the efficiency of the removal. Although sequential treatments by coagulants and chemical oxidation by Fenton solution or biochar improved the percentage of removal in biochar treatments compared to chemical oxidation, the concentration of pollutants is still high for disposal, especially phenolic compounds. As a result of that, these methods need more studies to improve them. Langmuir and Freundlich’s models gave a good describing the adsorption of phenolic compounds on the surface of biochar. However, the adsorption capacity is low compared to the scientific literature, because this study uses raw olive mill wastewater with a high organic load, which causes competition between these substances on the adsorption sites or inhibits adsorption by depositing them on the surface of the biochar.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133614633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the Physiochemical and Microbial Properties of the Waters of the Seashore in the City of Tocra, Libya","authors":"N. Alrwab, Hidaya Yunis Al-Ghazali","doi":"10.59743/jmset.v8i2.62","DOIUrl":"https://doi.org/10.59743/jmset.v8i2.62","url":null,"abstract":"The current study aimed to assess the state of water quality in Tocra beach (Libya). The physical, chemical, and bacterial properties of water were also studied. Water samples were collected from the sea and sediments for three consecutive months in the year (2020-2021) to study the following factors (water temperature, salinity, electrical conductivity, pH, total dissolved salts, chemical and biological requirements for oxygen, dissolved organic matter, and active nitrate). It was noted through these results that the proportions of these variables did not exceed the record numbers of seawater, in addition to the presence of contamination with the bacteria Escherichia coli (Negative gram) and it has proven its effectiveness for antibiotics, which indicates sewage pollution.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133522249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blood Parasites of Toads (Amietophrynus regularis) in Al-Sorojia and Jebel Aulia, Khartoum State, Sudan","authors":"O. Mohamed, O. Osman","doi":"10.59743/jmset.v8i1.3","DOIUrl":"https://doi.org/10.59743/jmset.v8i1.3","url":null,"abstract":"The present study was conducted to detect and identify blood parasites infecting toads Amietophrynus (Bufo) regulariss and find out the association between the infection of the parasites and host factors sex, length, body weight, and age. One hundred and twenty Amietophyrnus (Bufo) regularis (99 males and 21 females) were collected from May to August 2016 in two localities in Khartoum State (Al-Sorojia and Jebel Aulia). They were examined for blood parasites using blood films stained in Giemsa’s. A total of 77 (64.16%) of specimens were infected by 880 parasitic protozoa made-up of 879 (99.89%). Apicomplexa composed of Haemogregina spp. (89.66%), Hepatozoon spp. (10.22%), and 1 (0.11%) Kinteoplastides composed of Trypanosoma spp., while 43 (35.83%) were uninfected. No nematodes were recovered. The infection rate based on sex shows that females significantly (χ2 =12.520, p≤0.05) have a higher rate of infection than males. For the toad maturity, there was a significant difference in the infection rate between the mature group and the immature (χ2 =19.471, p=0.003). The infection rate increases with decreasing of weight and length with a negative correlation (rs = –0.022, p = 0.814 and rs = –0.004, p = 0.966, respectively). This study showed a high level of parasitic infection in African common toads in Khartoum State which contributed to the decline in amphibian populations. Further research on amphibian parasitism and its threats to human health is warranted.","PeriodicalId":106154,"journal":{"name":"مجلة علوم البحار والتقنيات البيئية","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123729943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}