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المنشورات العلمية

الرئيسية // المنشورات العلمية
The Environmental, Human and Animal Effects of Using Potassium Bromate in Bread Industry and Chemical Analytical Methods
Journal Article

Bread is a staple food for many nations globally. It is prepared by mixing wheat or barley flour with water and other additives. Potassium bromate (KBrO3) is the most used additive in bread industry, because of its efficiency to make the bread cost-effective and favourable to consume. However, KBrO3 is toxic to human and animals due to its ability to affect several body organs, e.g., liver, bones, blood, renal and hepatic, therefore KBrO3 is classified as a carcinogenic chemical and banned for using in the bread industries in most countries. Even though, this material is still in use as bread improver in several countries, nevertheless several oxidising agents was suggested to use as replacements instead of KBrO3 that doesn’t have harmful effects to the consumers. Many technologies have been developed and applied to evaluate the residues of KBrO3 in bakery products. This review paper explored the use of potassium bromate as a flour additive, and its effect on human, animal and environment, and the chemical methods to assess its remains in bread industries.

Salem Irhema Salem Irhema, (05-2024), الجامعه الاسمريه: international conference, 2

Epidemiology of Hypospadias in Libya Incidence, Risk Factors, and Treatment Challenges
Technical Report

Hypospadias is a common congenital anomaly that affects the male genitalia. This research paper aims to investigate the incidence of hypospadias in Libya by analyzing existing literature, statistical data, and medical records.

 The study will explore the prevalence of hypospadias among newborn boys in various regions of Libya, as well as the factors that may contribute to the development of this condition.

 Additionally, the paper will discuss the current treatment options available for hypospadias patients in Libya and the challenges faced by healthcare providers in managing this condition. By providing a comprehensive overview of hypospadias incidence in Libya, this research paper will contribute to the understanding and improvement of care for individuals with this congenital anomaly.

Mohamed Juma Mohamed Jubail, (05-2024), manuscript: جامعة الزنتان,

Assessing the Drinking Water Quality, and its Commercial Purification Units Efficiency Distributed in Alassaba Municipality- Libya
Journal Article

The demand for drinking water is increasing daily due to the rising world population, alongside the leakage of water, overuse of groundwater, and occurrence of several pollution issues that led to reducing the quality of groundwater. Consequently, in most countries purifying water technologies have been used to obtain drinkable water. Nationally, Libyans use the purified water extensively in their daily needs. Accordingly, to ensure that our citizen utilize harmless water, the quality of the used water and the efficiency of purification units was assessed by analyzing several physical and chemical characteristics of purified water and raw water supplied to the purification units from some local wells and man-made river (MMR) using recommended standard methods. The study results showed that the quality of purified water is excellent, and the purification process reduced the pH, electro conductivity and the concentration of studied chemical properties significantly to values less than the optimum levels (OL) suggested by the World Health Organization (WHO) and Libyan standards (LS) for drinking water. As a conclusion, the studied purified water may use in the daily needs of human with continuously analytical monitoring.

Salem Irhema Salem Irhema, (04-2024), جامعة سرت: Scientific Journal for the Faculty of Science-Sirte University, 4

التقييم المكاني لملاءمة الخدمات التعليمية في مدينة الزنتان بواسطة نظم المعلومات الجغرافية
مقال في مجلة علمية

تعتبر الخدمات التعليمية الركيزة الأساسية لاي مجتمع، اذ ان قطاع التعليم من اهم القطاعات المرتبطة ببناء المجتمع، وتحقيق النهضة والتنمية بمختلف مستوياتها.

         يتناول هذا البحث دراسة واقع الخدمات التعليمية الأساسية والثانوية داخل مدينة الزنتان وذلك من حيث ملاءمة الموقع الجغرافي بالنسبة لمساكن الطلاب، فمن المعروف ان اختيار الموقع الذي تبنى عليه المدرسة يجب ان يخضع لعدد من المعايير التخطيطية التي تعتمدها مصلحة التخطيط العمراني، ولكن وللأسف فان العديد من مواقع المدارس لا تنطبق عليها هذه المعايير، وهذا واقع العديد من المدن الليبية ومدينة الزنتان واحدة منها، ومن هنا جاءت فكرة هذه الدراسة .

         يهدف البحث الى بناء نموذج خرائطي لمواقع المدارس بمنطقة الدراسة لغرض تقييم المواقع الحالية بواسطة التقنية الحديثة المتمثلة في نظم المعلومات الجغرافية، من اجل التعرف على أوجه القصور في توزيع هذه الخدمات، ومحاولة إيجاد الحلول المناسبة لها وفق المعايير التخطيطية.

         لقد اعتمد الباحث في هذه الدراسة على المنهج الوصفي والتحليلي، لدراسة توزيع الخدمات التعليمية داخل منطقة الدراسة، من اجل إعطاء فكرة عن الوضع القائم للمدارس والتعرف على المشاكل التي تعاني منها هذه المدارس، بالإضافة للمنهج التحليلي التطبيقي المتمثل في استخدام تقنية نظم المعلومات الجغرافية وذلك من جل الحصول على نتائج دقيقة وفي زمن قصير نوعا ما، وذلك لما تتمتع به هذه التقنية من الدقة والسرعة في التعامل مع البيانات المكانية الكبيرة. وفي النهاية توصل الباحث لعدد من النتائج والتي هي عبارة عن المشاكل التي تعاني منها الخدمات التعليمية بالمدينة، كما تطرق الباحث الى عدد من التوصيات التي لو اخذ بها من قبل الجهات المسؤولة عن اتخاذ القرار فمن شأنها ان تقلل من القصور الحاصل في الخدمات التعليمية داخل المدينة 


الطاهر محمد الطاهر الزروق، (04-2024)، ليبيا: مجلة الجبل العلمية، 6

Novel sustainable steel fiber reinforced preplaced aggregate concrete incorporating Portland limestone cement
Journal Article

This study proposes a novel approach by adding Portland limestone cement (PLC) to preplaced aggregate steel fiber reinforced concrete (PASFRC) to create a sustainable concrete that minimizes CO2 emissions and cement manufacturing energy usage. The method involves injected a flowable grout after premixing and preplacing steel-fibers and aggregates in the formwork. This study evaluates the mechanical properties of a novel sustainable concrete that uses PLC and steel fibers. To achieve the intended objective, long and short end-hooked steel fibers of 1%, 2%, 3%, and 6% were incorporated in PASFRC. Also, Analysis of variance (ANOVA) was used to examine the data. Results indicated that PLC and higher fiber doses increased the mechanical properties of PAC. At 90 days, PASFRC mixtures containing 6% long steel fibers demonstrated superior compressive, tensile, and flexural strengths, registering the highest values of 49.8 MPa, 7.7 MPa, and 10.9 MPa, respectively and differed by 188%, 166%, and 290%, respectively from fiberless PAC. The study confirmed the suitability and effectiveness of using PLC with steel fibers in PAC which significantly improved the mechanical properties of PASFRC. This was verified through analytical analysis and new empirical equations were proposed to predict the mechanical properties of PASFRC.

Majed Ali Saleh, (04-2024), (Scientific Reports) London: Springer Nature, 14

تأثير الاستبدال الجزئي لمسحوق نوى نخيل التمر كمصدر طاقة بديل للحبوب في العليقة على الأداء الإنتاجي لدجاج اللحم
مقال في مجلة علمية

مستخلص 

في هذه الدراسة، تم استخدام 160 كتكوتًا

غير مجنسة من سلالة كوب بعمر يوم واحدوبمتوسط وزن 54 جرام لدراسة تأثير الاستبدال

الجزئي لمسحوق نوى نخيل التمر كمصدرطاقة

بديل للحبوب في العليقة على الصفات الإنتاجية لدجاج اللحم. تم تربية الكتاكيتفي

حظيرة دواجن مغلقة في منطقة عين زارة طرابلس، ليبيا، خلال الفترة من (10/9/2022)

الى (23/10/2022) بنظام تربية أرضي. وزعت الكتاكيت بشكل عشوائي على أربع

معاملات لكل معاملة 40 كتكوت وشملت كل معاملة أربع مكرارات( 10 كتاكيت لكل مكرر)

غذيت الكتاكيت بعلف بادي لحم23% بروتين حتى عمر 21 يومًا، ثم استبدل بعلف مكمل لحم

(20 %)بروتين حتى نهاية فترة التجربة، استبدلت الحبوب في العلائق البادي والمكمل

جزئيا بمسحوق نوى التمر بنسب (0،3،5،7%)للمعاملات الأولى (الشاهد)( والثانية

والثالثة والرا بعة على التوالي، وقد كانت المعاملات التجريبية متساوية في

النيتروجين (23 %) والسعرارت الحرا رية (3200سعرة حرارية/كجم)اتبع نظام التغذية

الحرة، حيث قدم العلف والماء للكتاكيت طوال فترة الدرا سة و التي استمرت ستة أسابيع، مع

مراقبة درجات الحرارة، كما تم تربية الكتاكيت تحت نفس

الظروف البيئية، والتي تضمنت الإضاءة

والتهوية والفرشة والعمالة الثابتة والبرنامج العلاجي والوقائي والتحصينات طوال

فترة إجراء التجربة. وقد شملت الدراسة أيضًا تحديدمتوسط زيادة الوزن، وكمية العلف

المستهلكة، ومعامل التحويل الغذائي، ومعدل النفوق لعمر

(42 يوم)للطيور. أظهرت نتائج هذه الدراسة وجود تأثر معنوي(P≤0.05)لإضافة مسحوق نوى التمر في علائق

دجاج اللحم على الزيادة الوزنية والكفاءة الغذائية للطيور مقارنة بمعاملة الشاهد، حيث أدت إضافة مسحوق نوى التمر بنسب(7،5،3%)

على لتوالي في العليقة إلى تحسن في الزيادة الوزنية والكفاءة الغذائية، كذلك بينت

النتائج انهكلما ا زد مستوى الإضافة إلى العليقة زادت قيمة الزيادة الوزنية وتحسنت

الكفاءة الغذائية،وان أفضل زيادة وزنية كانت عند بمستوى الإضافة (7%) يليها مستوى

الإضافة (5%) ثم مستوى الإضافة( 3%)على

التوالي مقارنة بمستوى معاملة الشاهد (0%)من ناحية أخرى سجلت أفضل كفاءة غذائية للمعاملة الرابعة(7%) والثالثة(

5%)مقارنة بمعاملة الشاهد( 0%)في حين لم توجد روق ذات دلالة إحصائية فيما يتعلق

بكمية العلف المستهلك، وكذلك معدل النفوق بين جميع المعاملات، حيث كانت قيم

المتوسطات متقاربة فيما بينها بناءً على النتائج، يمكن أن يكون استخدام نوى التمر

كمصدر طاقة بديل للحبوب ذو أهمية في البلدان التي تنمو فيها أشجار النخيل، مما

يمكن أن يوفر بعض

الحبوب الهامة للاستهلاك البشري.

الكلمات المفتاحية: نوى التمر،الاداء

الانتاجي، دجاج اللحم، الزيادة الوزنية، الكفاءة الغذائية.


محمد الطاهر الفيتورى سالم، عبدالرزاق فريوان، (04-2024)، مجلة الدولية للعلوم و التقنية: المجلة الدولية للعلوم والتقنية International Science and Technology Journal، 34

Isolation and identification of associated fungi and quantification of fungal toxin (aflatoxins) in locally grinded dried red pepper.
مقال في مجلة علمية

Abstract: Contamination of spices with aflatoxin is a serious global concern that affects human health and international trade. This study aims to isolate and identify fungi associated with locally ground dried red pepper samples, and quantification of aflatoxins concentration, and compare it with Libyan and international standard specifications. The results of the isolation and identification using nutritional medium potato agar extract (PDA) for 40 samples randomly selected from total samples, showed the isolation of 232 fungal isolates belonging to 3 genera of the genus Aspergillus spp., Acremonium sp., and Rhizopus sp., the isolated genera consist of 7 species, with the highest presence was of the fungi of the genus Aspergillus spp. at a rate of 99.14%, isolated Aspergillus spp. consist of 5 species with the most important species were A. flavus and A. niger, the results of fungal frequency showed the fungus A. flavus recorded the highest frequency, with a rate of 56.02%, followed by the fungus Aspergillus niger, with a rate of 35.80% .The results of extraction and quantification of total aflatoxin from 80 total samples at a detection limit higher than 0.25 ng/g showed the presence of aflatoxin in 69 samples (86.25%) at a concentration ranging between 0.250 and 41.33 ng/g, with an average concentration of 10.04 and 8.66 ng/g for the positive and total samples, respectively. The results of the study also showed that 57 samples (71.25%) were within the maximum permissible limits, and 23 samples (28.75%) of the total samples contained a concentration higher than the maximum permissible limits in the Libyan and the European union standard for the maximum limits of mycotoxins (aflatoxin) in some food contaminants, which constitutes a serious safety concern and indicates potential health risks to consumers, and confirms the need for urgent intervention strategies in order to implement agricultural practices. and following good manufacturing practice, and increasing awareness of the effects of the presence of these mycotoxins on human health. Keywords : Dry red pepper, food contaminants, aflatoxin, A. flavus. ELISA, moisture.


محمد احمد الرياني، (04-2024)، LIBYN Society OF FOOD & NUTRITION: LIBYN JOURNAL OF FOOD & NUTRITION، 1

Lipolytic Mycoflora In Fatura
Journal Article

Abstract: The current study was aimed for isolation, identification and preservation of mycobiota associated with the olive oil processing wastes (Fatura) collected from different cities in Al-Gabal Al-Gharby, Libya, screening the cold-active lipolytic activity of the isolated fungi and selection of the highest cold-active lipase producers. 31 fungal species belong to 12 genera were isolated from these samples with total CFUs of 29560. Fusarium was the most common genus at total CFUs of 9020 and comprising 30.51% from all fungi, followed by Aspergillus, that recorded 25.44% from all fungi. Penicillium was ranked third, nine different species were present. A total of 100% of samples were found to have CFUs of 5140 and 17.4% of all fungi. On lipase production agar medium at two temperatures, 10 and 20°C, 102 fungal isolates from 31 species were tested for their lipolytic activity. The majority of fungi could produce lipase activity at 20°C, where 98 out of 102 isolates the highest lipase producers was higher at 10°C (25) than at 20°C (16). The most active isolates were Alternaria, Fusarium, and Penicillium. Molecular identification of the most active four isolates was carried out by sequencing their internal transcribed spacer region (ITS).

 Keyword: Olive oil, cold active enzymes, Lipase, fungi, lipolytic activity, Fatura.


Mohamed Ahamed Al-Ryani, Joheni Mohamed Alhadi Jwely, (03-2024), الجمعية الليبية لعلوم وقاية النبات: Libyan Journal of plant protection, 14

Vulvovaginal Candidiasis In Pregnant Women
Journal Article

Abstract: This study aims to analyzing demographic data of patients, isolate and identify Candida species, which causes vaginal infections, and a study of its prevalence among pregnant women in Sorman city, Libya.210 specimens collected from patients admitted to the Maternity Care Center in the combined clinic. carried immediately to the Microbiology Laboratory in the National Cancer Institute, Subrata, Libya for direct microscopy, culturing, and characterization. Each participant was given an interview questionnaire and asked about their age, educational level, employment position, and history of recurrent vaginal yeast infection. Chronic diseases were also listed on the data collecting form. Identification of Candida species using Chrome agar: A total of 100 isolates have been recovered in this study, of which 72isolates were obtained as pure cultures on Chrome agar medium. According to their color on Chrome agar, these 72 colonies were categorized to 5 main species namely Candida albicans, C. glabrata, C. krusei, C. parapsilosis, and C. tropicalis. Genotypic identification of Candida species in this investigation was validated by the ITS tree. Eight strains from this investigation were found in the Candida albicans clade, which had a high bootstrap value of 99 percent ML/99 percent MP. These were therefore identified as Candida albicans., Within the Candida glabrata clade, three isolates were grouped together, demonstrating a strong support value of 99% ML/99%MP. These strains were recognized as belonging to the C. glabrata species, while one isolate was recognized as belonging to the C. tropicalis species, with a high support value of 99% ML/99%MP.

 Keywords: VVC infections, candidemia patients, genotypic identification, and Candida albicans

Mohamed Ahamed Al-Ryani, (03-2024), GLOBAL PUBLICATION HOUSE: International Journal of biological and medicine science, 3

Petrogenesis of the Neoproterozoic Peraluminous Orogenic Granite and Tertiary Phonolites from Jabal Fezzan in Southern Libya
Journal Article

Abstract—The majority of Neoproterozoic rocks exposed in southern Libya, are comprised of intrusive

coarse-grained porphyritic, two-mica, and high K-calc alkaline granite. The Jabal Fezzan Granite (JFG) is

located in southwestern Libya. In this study, trace elements and whole-rock geochemistry have been used to

understand the origin and the process of petrogenesis of the studied granites. The JFG is high-Si, Rb, Y, Nb,

and (ASI values greater than 1.1). Mineralogically, it is characterized by the presence of minor muscovite and

biotite and a lack of hornblende, exhibiting features of S-type granites, and having a character that belongs to

an alkali-calcic series. According to geochemical value, light REE-enriched, characterized by moderate

enrichments in LREE (La/Sm), HREE, and weak negative Eu-anomalies. The geochemical modeling of the

(JFG) reveals that the JFG derived from the melting of the crust and underwent high fractional crystallization

(~50%) of plagioclase and K-feldspar at (H-P) conditions (750–980°C/1–4 GPa). The Jabal Fezzan (JFG)

formed during Pan-African orogenic events during the destabilization of the interior Saharan metacraton due

to compression stress and transpressive movements along pre-existing weakness and reactivation of shear

zones inherited from Paleoproterozoic evolution. The Neoproterozoic basement forms the northernmost

margin of the intracratonic Muruzq Basin, as evidenced by (greenschist facies) and intruded granitic rocks

derived at the syn-collision stage (630–540 Ma).

Ali Salem Ali Ben sera, (03-2024), Pleiades Publishing,: Springer US, 32