تجتهد كليات التربية بجامعة طرابلس في دعم التربية العملية ، وذلك من خلال تدريب الكوادر المشرفة على تطبيق برنامج التربية العملية وتحاول اعتماد سياسة ممنهجة ، وخطة واضحة ، من أجل إعداد المعلم الاعداد الجيد . إلا أنها تواجه تحديات وصعاب وبناء عليها تتركز مشكلة الدراسة في الإجابة على السؤال الرئيس التالي : ما واقع التربية العملية من وجهة نظر طلاب كلية التربية طرابلس بجامعة طرابلس؟ وتفرعت من هذا السؤال الأسئلة الفرعية الاتية: أولا : ما مدي تحقق أهداف التربية العملية من وجهة نظر الطالب المعلم؟ ثانيا : ما مدي وضوح خطوات التسجيل وتنفيذ التربية العملية من وجهة نظر الطالب المعلم؟ ثالثا : ما دور ادارة المدرسة في انجاح التربية العملية من وجهة نظر الطالب المعلم؟
اسامة مسعود ابوالقاسم محمد, ليلى رمضان عبدالله جويبر(3-2017)

Seabird feathers and eggshells are used as bio-monitors for trace metal contamination. Eleven trace element concentrations in wing primaries (n = 21) and eggshells (n = 8) are reported herein for two resident seabirds, Bridled Tern Onychoprion anaethetus and Black-naped Tern Sterna sumatrana, at Pulau Ling and Pulau Tokung Burung, Malaysia. Metal concentration followed the pattern Zn > Cr > Mn > Sr > Cu > Se > Ba > Pb > Cd > Ga > Li. Significant positive correlations existed among all trace metals, except for Cr in Black-naped Tern and Li and Cd in Bridled Tern feathers. We also analyzed metal concentrations in eggshells, and for Bridled Tern, the concentration pattern was Zn > Mn > Se > Sr > Ba > Pb > Co > Cu > Cd, whereas for Black-naped Tern it was Cr > Zn > Mn > Ba > Sr > Se > Cu> Co > Pb. A pairwise positive correlation was significant among most trace metals in feather samples, indicating synergistic effects of two or more elements. More studies are needed to build a baseline database of trace metal concentrations in seabirds of Southeast Asia, as little research on this subject has been conducted in this region.
Abdulmula Abdumagid Alhadi Hamza(1-2022)

This report is based on the assessment of four heavy metals: lead, chromium, nickel, and copper, in thirty-two roadside soil samples, one of which was a virgin soil, in Zawia City, Libya. During spring 2019, soil samples were collected from five sites along Jamal Street starting from the old university building to Al-Shuhadaa Square. The atomic absorption spectrometer Perkin Elmer AAnalyst 400 was used in this study using absorption mode, except for the use of Cu emission mode due to the unavailability of the Cu lamp. Results showed that the highest concentrations of the investigated elements were: 36 mg/kg for Pb, 15.6 mg/kg for Cr, 8.3 mg/kg for Ni, and 50 mg/kg for Cu. These values are in agreement with the allowable values of heavy metal concentration of soils in some European countries (i.e. Austria, Germany, and France). However, the concentration values for Pb, Cr, Ni, and Cu were 5.2, 2.9, 2.3, and 7.8 fold higher, respectively, than that of the virgin soil sample collected about 10 km away from the city centre. The sample preparation method used in this work was demonstrated to be suitable, showing acceptable recovery values (R%) of 94.6%, 81.9%, 87.6%, and 90.7% for Pb, Cr, Ni, and Cu, respectively.
Ragiab A M Issa(4-2020)