The adsorption of acid red 186(AR) onto activated carbon prepared from Libyan farms was studied, the effect of solution pH, contact time, adsorption dose and initial dye concentration was evaluated. The adsorption studied included Langmuir and Freundlish isotherms were applied to experimental results. The experimental results fitted very well to both adsorption isotherms. The mixture mono layer capacity obtained from Langmuir is q_e =7.62mg/g for activated carbon (100-45um) and q_e=7.194mg/g for activated carbon (lees than 45um).Therefore, activated carbon has the potential to be used as a low cost eco-friendly adsorbent for removal “activated carbon” dye from aqueous solution. arabic 11 English 57
ezouldeen(5-2015)

قد كشفت بعض الـدراسات التربوية عن " أن المعلم لا يستطيع أن يقود العملية التعليمية وتطوير مادتها، وطرق تدريسها لمسايرة التطور السريع في ميدان المعرفة، وتنفيذ المهمة الموكلة إليه إلا إذا تمكن من مجموعة من الكفايات التدريسية الأساسية". من بين هذه الكفايات التدريسية التي يجب أن يكون المعلم متمكنا منها التخطيط للدرس وإدارة الصف وبعض السمات الشخصية وبعض الكفايات الأخرى. تعتبر مرحلة ما قبل المدرسة (رياض الأطفال) مـن المراحل المهمة التي تتطلب مـن المدرس أن يبذل قصار جهده لتوصيل المعارف والمعلومات الأساسية، ويجب أن يكون على مستوى عال من تلك الكفايات التدريسية. تهدف الدراسة للتعرف على مستوى الكفايات التدريسية لمعلمات (رياض الأطفال) مرحلة ما قبل المدرسة. arabic 124 English 0
أ. زهرة أبوبكر الحمال, أ. سعاد ميلاد الصيد(1-2011)

ABSTRACT The physical and chemical properties of ground water from thirty wells in Sug al Juma’a area in Tripoli, Libya were analyzed using standard methods. Ground water samples were collected from three locations (Al-Shat Road (A), Sug al Juma’a Road (B) and Arada Road (C)). The physical and chemical parameters such as pH, Total Dissolved Solids (TDS), Total Hardness (TH), Electrical Conductivity (EC), Calcium (Ca2+), Magnesium (Mg2+), Sodium (Na+), Potassium (K+), Chloride (Cl-), Sulfate (SO4 2-), Bicarbonate (HCO3 -), Nitrate (NO3 -) were analyzed to study the present status of the ground water quality. The results were compared to the Libyan Standard No. 82 for Drinking Water and the World Health Organization (WHO). The understudy samples showed significantly higher values of TDS and EC than Libyan Standard and WHO. Permissible limits which may greatly influence the health conditions of the residents of this area. It is concluded from this study that the ground water of the area needs a substantial degree of purification treatment before using for drinking and domestic purposes. arabic 8 English 56
Aburawi Elgornazi, Ali Bukhzam, Nessma Alshelmani, Nabil Bader(1-2021)