Abstract: This paper presents simulation technique for life assessment of the insulation of the power transformer. Load and ambient temperatures are two important factors that influence the hot spot of transformers. The transformer hot spot temperature is one of the most critical parameter in determining the life of transformer paper insulation. The simulation (Matlab Software Package) is based on related international standards as the IEC 60076-7:2005 loading guide method. Load and ambient temperatures of the transformer obtain from General Electrical Company and meteorology office of Libya are used as the input for the simulation together with transformer parameters from heat run test. Hottest spot temperature and loss-of-life are calculated. Lifetime of transformer is predicted. Keywords: Hot-spot temperature, power transformer, top-oil temperature, loss of life

Abstract :

This paper generally investigates religious texts in many aspects, definition,

ways of translation, and difficulties in translation that may face both translators

and MA students. Yet it particularly focuses on The Holy Quran, its distinction

over other kinds of texts and difficulties translators and/or MA students face

when translating its verses and passages. Translating religious passages literally

(like The Holy Quran) will not give the real meaning , but it depends on the

interpreting ( tafseer ) to make the readers of the translation get the real and

intended meaning. The participants of this study were ten MA students of both

genders.

The results of this study show that translation is not always an easy task,

especially translating religious texts. This type of text is different from all

other types of literature, scientific, technical … etc. Translators have to follow

special translation techniques to produce an accurate translation and be faith to

the original text, never omit words or replace them with words may change

the intended meaning. That is a big challenge faces translators of religious

texts.

العلاج الضوئي الديناميكي (PDT) يُعد وسيلة علاجية طفيفة التوغل تعتمد على تفاعل كيميائي ضوئي لتدمير الأنسجة المرضية بشكل انتقائي. يتضمن هذا العلاج عاملًا محسسًا للضوء، ومصدرًا ضوئيًا، والأكسجين الجزيئي. من بين العوامل المحسِّسة الأكثر استخدامًا: حمض 5-أمينوليفولينيك (ALA) وميثيل أمينوليفولينات (MAL). وقد تمت الموافقة على استخدام PDT لعلاج التقرن الشعاعي (AK)، وسرطان الخلايا القاعدية (BCC)، ومرض بوين. تُستخدم مصادر الضوء LED بشكل قياسي في PDT. أظهر العلاج فعالية في معالجة الآفات السطحية والمتعددة والواسعة الانتشار، مع تطبيقات في الأورام الجلدية والأمراض الجلدية مثل حب الشباب، الصدفية، والبهاق. يبرز الملخص الأهمية السريرية والإمكانات العلاجية لـ PDT.

This study investigates whether internal auditors in Libyan oil companies possess the necessary competence and capabilities in the security of electronic accounting information systems within an era of transition from manual auditing to electronic accounting information system auditing. The study also examines the issue of whether internal auditors implement sufficient safeguards to address the risks associated with electronic accounting information systems. A questionnaire survey adopted for data collection revealed that: internal auditors in the sampled companies possess a high level of competence and efficiency in electronic accounting information system security; and that they also follow all protective measures to counter the risks of electronic accounting information systems. However, descriptive statistics show that the mean scores of participants' responses regarding the competence and efficiency of internal auditors in electronic accounting information system security were lower than the overall mean of the axis. This could be seen as a deficiency on the part of internal auditors in reviewing risks related to electronic accounting information systems, monitoring management's implementation of regular maintenance of electronic systems, ensuring the existence of sufficient protection programs to scan electronic programs or magnetic disks, implementing procedures to limit risks arising from electronic equipment damage, and periodically evaluating information security applications within the company. Descriptive statistics also indicate that the average scores of participants' responses regarding internal auditors' adherence to all protective measures to counter the risks of electronic accounting information systems were lower than the overall mean of the axis. This could be seen as a deficiency on the part of internal auditors in monitoring IT staff in implementing required security measures, participating in updating security methods according to changes in the evolving IT environment, participating in developing specific security policies such as selecting the appropriate technology and its effectiveness, participating in developing and formulating a strategy for developing the security of electronic accounting information systems, and contributing to the detection of security breaches through reports and describing the type of breach

Vortex airflow-assisted melt differential electrospinning for preparing superfine fiber yarns was proposed. This method with solvent-free exhibits a higher yield of 20 ± 5.17 m/min compared to the range of 0–5 m/min achieved by solution electrospinning with organic solvents. Simulation and high-speed photography show that the fibers are aggregated by suction airflow and twisted into yarns by vortex airflow. Polylactic acid (PLA) superfine fiber yarns exhibit fine fiber diameters ranging from 0.96 to 5.57 μm, a yarn diameter of 211.7 ± 40.8 μm, and a high tensile strength of 39.4 ± 3.12 MPa. Furthermore, these PLA melt electrospun yarns can be woven into fabric with a water contact angle of 120.1° and triboelectric voltage of 7.41 V, demonstrating their potential in self-cleaning textiles and flexible smart textiles. Moreover, this method is generally applicable to thermoplastic polymers including polyethylene …

تهدف هذه الدراسة إلى تقييم مستويات الفلوريد في منتجات معاجين الأسنان التي تباع حاليًا في السوق الليبي. تم تحليل 30 عينة مختلفة من منتجات معاجين الأسنان (9 عينات للأطفال و21 عينة للبالغين) لتقدير تركيز الفلوريد باستخدام الطريقة الطيفية. أظهرت النتائج أن جميع عينات معاجين الأسنان المخصصة للأطفال تحتوي على مستويات فلوريد أقل من 500 جزء في المليون، وهو مناسب للأطفال. في المقابل، كان تركيز الفلوريد في 18 عينة (85.7%) من معاجين الأسنان للبالغين يتراوح بين 500 و1500 جزء في المليون، بينما تجاوزت 3 عينات (14.3%) المستوى المسموح به بتركيز أعلى من 2000 جزء في المليون. يمكن الاستنتاج أن محتوى الفلوريد في معاجين الأسنان للأطفال كان ضمن المستويات المثالية الموصى بها، في حين وُجد تباين واسع في تركيز الفلوريد في العينات الأخرى