Ali Hussen - Academia.edu (original) (raw)

Papers by Ali Hussen

Research paper thumbnail of Comparative assessment of the physico-chemical and bacteriological qualities of selected streams in Louisiana

International Journal of …, 2005

The objective of this research was to compare the chemical/physical parameters and bacterial qual... more The objective of this research was to compare the chemical/physical parameters and bacterial qualities of selected surface water streams in Louisiana, including a natural stream (control) and an animal waste related stream. Samples were collected and analyzed for fecal coliforms. Fecal coliforms isolated from these samples were identified to the species level. Chemical analysis was performed following standard test protocols (LaMotte 2002). An analysis of biological oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total dissolved solids (TDS), conductivity, pH, temperature, ammonia nitrogen, nitrate nitrogen, iron, copper, phosphate, potassium, sulfate, turbidity, zinc and bacterial levels was performed following standard test protocols as presented in Standard Methods for the Examination of Water and Wastewater [9]. Results of the comparisons of the various surface water streams showed that phosphate levels, according to Mitchell and Stapp, were considered good for Lake Claiborne (control) and Bayou Dorcheat. The levels were found to be .001 mg/L and .007 mg/L respectively. Other streams associated with animal waste, had higher phosphate levels of 2.07 mg/L and 2.78 mg/L, respectively. Conductivity and total dissolved solids (TDS) levels were the lowest in Lake Claiborne and highest in the Hill Farm Research Station stream. It can be concluded from the data that some bacterial levels and various nutrient levels can be affected in water resources due to non-point source pollution. Many of these levels will remain unaffected.

Research paper thumbnail of Alkaline hydrogen peroxide pretreatment of cladodes of cactus (opuntia ficus-indica) for biogas production

Research paper thumbnail of دور الخصائص الشكلية في إنسجام المشهد الحضري

Iraqi Journal of Architecture and Planning

يتناول البحث كيفية التعامل مع الخصائص الشكلية على مستوى العناصر المكونة للمشهد الحضري لتحقيق ظاهر... more يتناول البحث كيفية التعامل مع الخصائص الشكلية على مستوى العناصر المكونة للمشهد الحضري لتحقيق ظاهرة الانسجام في مراكز المدن من خلال بناء انموذج نظري- متكامل , تتحدد من خلالة الاسس والمفردات الرئيسة والعوامل التي تعتمد عليها الإنسجام وايجاد قيم ودرجات الانسجام للخصائص الشكلية على مستوى العناصر, ووفق هذا المنظور تم تحديد مشكلة البحث : عدم وضوح دور الخصائص الشكلية لعناصر الواجهات في تحقيق الانسجام في المشهد الحضري , لذا هدف البحث إلى: بناء اطار نظري للخصائص الشكلية على مستوى العناصر ودورها في انسجام المشهد الحضري , وكانت اهم النتائج التى توصل اليها البحث الى بناء هيكل واضح لجميع العوامل والمفردات المؤثرة في ظاهرة الإنسجام , إذ تتمثل بمجموع الخصائص الشكلية لعناصر المشهد الحضري , ويعتمد كل عنصر على مجموع المتغيرات المؤثرة فيه.

Research paper thumbnail of Comparative assessment of the physico-chemical and bacteriological qualities of selected streams in Louisiana

International Journal of …, 2005

The objective of this research was to compare the chemical/physical parameters and bacterial qual... more The objective of this research was to compare the chemical/physical parameters and bacterial qualities of selected surface water streams in Louisiana, including a natural stream (control) and an animal waste related stream. Samples were collected and analyzed for fecal coliforms. Fecal coliforms isolated from these samples were identified to the species level. Chemical analysis was performed following standard test protocols (LaMotte 2002). An analysis of biological oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total dissolved solids (TDS), conductivity, pH, temperature, ammonia nitrogen, nitrate nitrogen, iron, copper, phosphate, potassium, sulfate, turbidity, zinc and bacterial levels was performed following standard test protocols as presented in Standard Methods for the Examination of Water and Wastewater [9]. Results of the comparisons of the various surface water streams showed that phosphate levels, according to Mitchell and Stapp, were considered good for Lake Claiborne (control) and Bayou Dorcheat. The levels were found to be .001 mg/L and .007 mg/L respectively. Other streams associated with animal waste, had higher phosphate levels of 2.07 mg/L and 2.78 mg/L, respectively. Conductivity and total dissolved solids (TDS) levels were the lowest in Lake Claiborne and highest in the Hill Farm Research Station stream. It can be concluded from the data that some bacterial levels and various nutrient levels can be affected in water resources due to non-point source pollution. Many of these levels will remain unaffected.

Research paper thumbnail of Alkaline hydrogen peroxide pretreatment of cladodes of cactus (opuntia ficus-indica) for biogas production

Research paper thumbnail of دور الخصائص الشكلية في إنسجام المشهد الحضري

Iraqi Journal of Architecture and Planning

يتناول البحث كيفية التعامل مع الخصائص الشكلية على مستوى العناصر المكونة للمشهد الحضري لتحقيق ظاهر... more يتناول البحث كيفية التعامل مع الخصائص الشكلية على مستوى العناصر المكونة للمشهد الحضري لتحقيق ظاهرة الانسجام في مراكز المدن من خلال بناء انموذج نظري- متكامل , تتحدد من خلالة الاسس والمفردات الرئيسة والعوامل التي تعتمد عليها الإنسجام وايجاد قيم ودرجات الانسجام للخصائص الشكلية على مستوى العناصر, ووفق هذا المنظور تم تحديد مشكلة البحث : عدم وضوح دور الخصائص الشكلية لعناصر الواجهات في تحقيق الانسجام في المشهد الحضري , لذا هدف البحث إلى: بناء اطار نظري للخصائص الشكلية على مستوى العناصر ودورها في انسجام المشهد الحضري , وكانت اهم النتائج التى توصل اليها البحث الى بناء هيكل واضح لجميع العوامل والمفردات المؤثرة في ظاهرة الإنسجام , إذ تتمثل بمجموع الخصائص الشكلية لعناصر المشهد الحضري , ويعتمد كل عنصر على مجموع المتغيرات المؤثرة فيه.