rmelkhatib

أ. د. رأفت محمد أحمد محمد أحمد الخطيب

استاذ - أستاذ بقسم الكيمياء

كلية العلوم

العنوان: قسم الكيمياء - كلية العلوم - جامعة سوهاج

7

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية:


2018-11-22 00:15:19 الكلمات المفتاحية , zeolite, ammonium,
Adsorption and desorption characteristics of ammonium by natural zeolite mineral
يهدف البحث إلى دراسة الخصائص الإدمصاصية للأمونيوم بواسطة معدن الزيوليت الطبيعى. إقراء المزيد

Robust methods for hand gesture spotting and recognition using hidden markov models and conditional random fields
This paper proposes an automatic method that handles hand gesture spotting and recognition simultaneously. To spot meaningful gestures of numbers (0-9) accurately, a stochastic method for designing a non-gesture model with Hidden Markov Models (HMMs) versus Conditional Random Fields (CRFs) is proposed without training data. The non-gesture model provides a confidence measure that is used as an adaptive threshold to ... إقراء المزيد

Robust methods for hand gesture spotting and recognition using hidden markov models and conditional random fields
This paper proposes an automatic method that handles hand gesture spotting and recognition simultaneously. To spot meaningful gestures of numbers (0-9) accurately, a stochastic method for designing a non-gesture model with Hidden Markov Models (HMMs) versus Conditional Random Fields (CRFs) is proposed without training data. The non-gesture model provides a confidence measure that is used as an adaptive threshold to ... إقراء المزيد

2018-11-24 23:24:04 الكلمات المفتاحية IRM, , SIRM, Heavy metals, Ferromagnetic, Brownian motion, Micromorphology,
BIOMAGENTIC MONITORING OF AIR POLLUTION USING DUST PARTICLES OF URBAN TREE LEAVES AT UPPER EGYPT
Six common tree species were used to check their suitability to use as magnetic biomonitors for particulate air pollution. The morphology and chemical composition of their leaf dust were identified using SEM/EDX. The results showed that the shape of particles are sphers, ovoid, irregular or grouped into aggregates; they were well within the size range of urban dust, especially hazardous ... إقراء المزيد

2018-11-24 23:34:01 الكلمات المفتاحية Stomata, , Dust, , biomonitoring, Air pollution, Ficus nitida,
Bio-monitoring of Airborne Dust Particles Pollutants by Morpho-anatomical Reactions of Urban Tree Leaves Under Dry Climate
THIS IS A MORO- ANATOMICAL study where Ficus nitida tree leaves from dust-affected street are compared with those of control from a pollution free site. Under the impact of dust particles, leaf sizes and specific leaf area are significantly smaller and stomatal density differs. Under pollution circumstances, visual symptoms including chlorosis /yellowish and dark spots on the adaxial surface of ... إقراء المزيد

2018-11-24 23:34:01 الكلمات المفتاحية Stomata, , Dust, , biomonitoring, Air pollution, Ficus nitida,
Bio-monitoring of Airborne Dust Particles Pollutants by Morpho-anatomical Reactions of Urban Tree Leaves Under Dry Climate
THIS IS A MORO- ANATOMICAL study where Ficus nitida tree leaves from dust-affected street are compared with those of control from a pollution free site. Under the impact of dust particles, leaf sizes and specific leaf area are significantly smaller and stomatal density differs. Under pollution circumstances, visual symptoms including chlorosis /yellowish and dark spots on the adaxial surface of ... إقراء المزيد

2018-11-24 23:40:46 الكلمات المفتاحية Olea europaea, , epidermis, Stomata, xylem, morphology, Cement dust, Libya,
Morpho-Anatomical Characteristics of Olive (Olea europaea L.) Trees Leaf as Bio-indicator of Cement Dust Air Pollution in Libya
Comparisons were made between the anatomical and morphological changes in olive tree leaves from a site with relatively clean air (Al-Khadra area), and two sites (al-Khums and Zelatin) near to cement factories in the area east to Tripoli, Libya. Olive tree leaves exhibited marked variations in their morphological and anatomical characteristics, in relations to variations in the site cement dust ... إقراء المزيد

2018-11-26 00:07:37 الكلمات المفتاحية chromoendiscopy , evaluation , ,
Evaluation and screening using routine chromo endoscopy by indigo carmine dye for early detection of rectosigmoid lesion in sohag university hospital ,Egypt
يعد سرطان القولون و المستقيم ثالث اكثر انواع الاورام السراطنية شيوعا في جميع انحاء العالم بعد سرطان الرئة و سرطان الثدي . ثلثي الاصابة بسرطان القولون و المستقيم تحدث في المناطق الاكثر نموا في العالم . اشتملت هذه الدراسة علي 85 مريضا حضروا الي وحدة المناظير التابعة لقسم امراض الباطنة بالمستشفي الجامعي بسوهاج لاجراء الفحص التقليدي بالمنظار السفلي لاسباب مختلفة ... إقراء المزيد

2018-11-27 18:07:20 الكلمات المفتاحية CMV, RENAL TRANSPLANTATION, , CMV, IMMUNOSUPRESION,
Cytomegalovirus (CMV) activation in relation to different immunosuppressive induction therapy after renal transplantation
ABSTRACT INTRODUCTION: Cytomegalovirus (CMV) is a common cause of morbidity and mortality among patients receiving chronic maintenance immunosuppression and is often considered the most important infection in renal transplantation. AIM OF THE WORK Our study evaluated the activation of CMV after renal transplantation in relation to different induction therapy comparing with no induction therapy. MATERIALS AND METHODS_:__MATERIALS AND METHODS:_ a ... إقراء المزيد