المستودع الرقمي لـجامعة طرابلس

Marine macroalgae are considered as an excellent source of bioactive compounds which has a broad range of biological activities including antibacterial and antioxidant. Crude methanolic and water extracts of 19 marine algal species (6 Chlorophyta, 8 Phaeophyta and 5 Rhodophyta) collected from the western coast of Libya were evaluated for antibacterial activity against pathogenic bacteria (4 Gram-positive, 4 Gram-nega- tive). The extracts showed a significant antibacterial activity against Gram positive (Staphylococcus aureus, Bacillus subtilis, Bacillus spp., and Staphylococcus epidermidis) as well as Gram negative bacteria (Escherichia coli, Salmonella typhi, Klebsiella spp., and Pseudomonas aerugi- nosa). The algal aqueous and methanolic extracts displayed different degrees of antimicrobial activities against different bacteria, in some cases methanolic extracts showed higher antibacterial activity than aqueous extracts. Among tested algae, Brown algae namely Cystoseira crinite exhibited the highest antibacterial activity among tested algal species.
Salah M. Azwai(1-2013)

The aim of this study was to carry out a serological survey of antibodies against Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) in 1500 one day old broiler chickens sera were examined by serum plate agglutination test. Antibodies against MG and MS were detected 3.4% and 6.4%, respectively. The seroprevalence of MG was 5.2% in chickens from imported fertile eggs and 0% in chickens from local fertile eggs, whereas for MS was 9.3% in chickens from imported fertile eggs and 0.8% in chicks from local fertile eggs.
Salah M. Azwai(1-2013)

The genus Vibrio includes several food-borne pathogens that cause a spectrum of clinical conditions including septicemia, cholera and milder forms of gastroenteritis. Several Vibrio spp. are commonly associated with food-borne transmission including Vibrio cholerae, Vibrio parahemolyticus, and Vibrio vulnificus. Microbiological analysis for enumeration and isolation of Vibrio spp. were carried out for a total of 93 samples of seafood, meat and meat products from different geographic localities in Libya (Tripoli, Regdalin, Janzour and Toubruk). Vibrio spp. were detected by conventional cultural and molecular method using PCR and sequencing of 16S rDNA. Out of the 93 cultured samples only 48 (51.6%) yielded colonies on Thiosulfate Citrate Bile Salt agar (TCBS) with culture characteristics of Vibrio spp. More than half (n=27) of processed seafood samples (n=46) yielded colonies on TCBS, while only 44.6 % of samples of meat and meat products showed colonies on TCBS. Among cultured seafood samples, the highest bacterial count was recorded in clam with a count of 3.8 х104 CFU\g. Chicken burger samples showed the highest bacterial count with 6.5 х104 CFU\g. Molecular analysis of the isolates obtained in this study, showed that 11 samples out of 48 (22.9%) were Vibrio spp. Vibrio parahemolyticus was isolated from camel meat for the first time. This study is an initial step to provide a baseline for future molecular research targeting Vibrio spp. foodborne illnesses. This data will be used to provide information on the magnitude of such pathogens in Libyan seafood, meat and meat products.
Salah M. Azwai(1-2016)

Aim: The aim of this work was to isolate and molecularly identify enterohemorrhagic Escherichia coli (EHEC) O157 in milk and dairy products in Libya, in addition; to clear the accuracy of cultural and biochemical identification as compared with molecular identification by partial sequencing of 16S rDNA for the existing isolates. Materials and Methods: A total of 108 samples of raw milk (cow, she-camel, and goat) and locally made dairy products (fermented cow’s milk, Maasora, Ricotta and ice cream) were collected from some regions (Janzour, Tripoli, Kremiya, Tajoura and Tobruk) in Libya. Samples were subjected to microbiological analysis for isolation of E. coli that was detected by conventional cultural and molecular method using polymerase chain reaction and partial sequencing of 16S rDNA. Results: Out of 108 samples, only 27 isolates were found to be EHEC O157 based on their cultural characteristics (Tellurite-Cefixime-Sorbitol MacConkey) that include 3 isolates from cow’s milk (11%), 3 isolates from she-camel’s milk (11%), two isolates from goat’s milk (7.4%) and 7 isolates from fermented raw milk samples (26%), isolates from fresh locally made soft cheeses (Maasora and Ricotta) were 9 (33%) and 3 (11%), respectively, while none of the ice cream samples revealed any growth. However, out of these 27 isolates, only 11 were confirmed to be E. coli by partial sequencing of 16S rDNA and E. coli O157 Latex agglutination test. Phylogenetic analysis revealed that majority of local E. coli isolates were related to E. coli O157:H7 FRIK944 strain. Conclusion: These results can be used for further studies on EHEC O157 as an emerging foodborne pathogen and its role in human infection in Libya.
Salah M. Azwai(1-2016)

This study aimed to evaluate the antibacterial activity of flavonoids extracted from two Libyan brown algae namely Cystoseira compressa and Padina pavonica using microwave-assisted extraction method against pathogenic bacteria isolated from meat, meat products, milk and dairy products (Staphylococcus aureus subsp. aureus (5 isolates), Bacillus cereus (3 isolates), Bacillus pumilus (1 isolate), Salmonella enterica subsp. enteric (4 isolates) and Enterohaemor-rhagic Escherichia coli O157 (EHEC O157) (4 isolates)). All of these isolates were muti-drug resistant with high MAR index. The results showed that C. compressa extract exhibited better and stronger antibacterial activities against the seventeen tested isolates with inhibition zones diameter ranged from 14 - 22 mm compared to P. pavonica extract which showed positive effect against 9 isolates with low inhibition zone ranged from 11 - 16.5 mm. Flavonoids extracted from C. compressa also displayed the best spectrum of bactericidal effect with a ratio MBC/MIC ≤ 4 obtained on all susceptible tested bacterial strains. Flavonoids and proanthocyanidins significantly contributed to the antibacterial properties. The mode of action of these active extracts is under investigation.
Salah M. Azwai(1-2017)

مجلة الإرادة معهد الإرادة الليبي للتعليم العالي طبرق العدد الثاني ديسمبر 2021 دور كتب التربية الوطنية في تحقيق أهداف التنمية المستدامة (دراسة تحليلية لمضمون كتب التربية الوطنية للصف السابع والثامن والتاسع من مرحلة التعليم الأساسي في ليبيا) إعداد: د/فتحي محمد مادي العباني- كلية التربية طرابلس / جامعة طرابلس : Fa.madi@uot.edu.ly الملخص: هدفت الدراسة لمعرفة مدى مساهمة كتب التربية الوطنية للصفوف (السابع والثامن والتاسع)،بليبيا في تحقيق أهداف التنمية المستدامة كما حددتها منظمة التربية والثقافة والعلوم في الوثيقة (2030التعليم) عام (2015)، ولتحقيق ذلك أُستخدم الباحث المنهج الوصفي التحليلي (اسلوب تحليل المحتوى) و بواسطة استمارة للتحليل من إعداد الباحث لتحليل كتب عينة الدراسة: (التربية الوطنية للصفوف السابع والثامن والتاسع) واظهرت النتائج أن تناول الكتب المحللة لأهداف المجال الاجتماعي للتنمية المستدامة جاء في المرتبة الأولى بتكرار(350) وبنسبة (.48%) يليه المجال الاقتصادية للتنمية المستدامة بتكرار(224) وبنسبة (.31%) وجاء المجال البيئي للتنمية المستدامة في المرتبة الأخيرة بتكرار(157) وبنسبة(.21%)، وأوصى الباحث بضرورة العمل على إدماج أهداف التنمية المستدامة من ضمن أهداف مقررات التربية الوطنية، خاصة كتاب الصف التاسع من مرحلة التعليم الأساسي. الكلمات المفتاحية: كتب التربية الوطنية -أهداف التنمية المستدامة
Fathi Mohamed Madi(12-2021)

This book was designed to provide dental students an overview about the instruments which used in fixed Prosthodontics. It is useful as a revision and reference tool. It is also prepared to be easy to read for dental students and general dental practitioner. The book aimed to enhance the knowledge and understanding the application of the instruments and equipment used to make crowns and bridges from the beginning of the diagnosis stage till the delivery of final restoration. Dental practitioner must have a thorough background about the knowledge and function of each instrument to be used in fabrication of a fixed partial denture as a first step in the patient treatment.
Seham Elsawaay(1-2022)

المعاهد العليا للتعليم التقني الخاص بليبيا ودورها في تعزيز فرص التعلم من أجل التنمية المستدامة من وجهة نظر أعضاء هيئة التدريس )معهد طرابلس للعلوم الطبية نموذجاً(. الملخص: هدفت الدراسة إلى التعرف على دور المعاهد العليا للتعليم التقني الخاص بليبيا في تعزيز فرص التعلم من أجل التنمية المستدامة، ولتحقيق ذلك تم استخدم المنهج الوصفي، كما تم اعتماد (الاستبيان) كأداة لجمع البيانات من عينة التي بلغت (30) عضو هيئة تدريس، وأظهرت نتائج الدراسة أن دور المعاهد العليا للتعليم التقني الخاص في ليبيا كان بدرجة عالية في كل المجالات :( التعليم، البحث العلمي، خدمة المجتمع)، وبينت نتائج الدراسة وجود العديد من التحديات التي تواجه تلك المعاهد، وتكشفت الدراسة ايضًا عدم وجود فروق ذات دلالة إحصائية لإجابات عينة الدراسة في مجالاتها كافة. كما أوصت الدراسة بوضع استراتيجية وطنية شاملة للتعليم الخاص، بمشاركة ودعم القيادة السياسية لوضع السياسات التعليمية العامة للدولة للتحقيق التعليم من أجل التنمية المستدامة. الكلمات المفتاحية: المعاهد التقنية العليا - التنمية المستدامة– التعليم الخاص.
Fathi Mohamed Madi , Albasher Alhadi Alkrkoti(12-2021)