rmelkhatib

أ. د. رأفت محمد أحمد محمد أحمد الخطيب

استاذ - أستاذ بقسم الكيمياء

كلية العلوم

العنوان: قسم الكيمياء - كلية العلوم - جامعة سوهاج

18

إعجاب
7 0 0 5 3 0 455 31
51

أضيف حديثا
  • المقررات الدراسية 7
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 5
  • ساعات مكتبية 3
  • الاعلانات 0
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية:

Occult Hepatitis B Virus Infection among Egyptian Hepatitis C Virus Seropositive and Seronegative Hemodialysis Patients in Sohag Government, Upper Egypt

2018-09-21 19:42:18 الكلمات المفتاحية Occult HBV, , HCV, Hemodialysis, HCV, Hemodialysis,
Occult Hepatitis B Virus Infection among Egyptian Hepatitis C Virus Seropositive and Seronegative Hemodialysis Patients in Sohag Government, Upper Egypt
Background: Hepatitis B virus (HBV) and hepatitis C virus (HCV) Infections are important and common causes of liver disease in end-stage renal failure (ESRF) in patients on haemodialysis (HD). HBV is less endemic than HCV in Egypt (ranges from 2%–7%). Although, the prevalence of HBV in haemodialysis patients has decreased significantly due to HBV vaccine and screening of blood donors, ... إقراء المزيد

Developed generalised unified power flow controller model in the Newton–Raphson power-flow analysis using combined mismatches method

2018-09-22 10:24:15 الكلمات المفتاحية GUPFC , FACTS, ,
Developed generalised unified power flow controller model in the Newton–Raphson power-flow analysis using combined mismatches method
This study proposes the generalised unified power flow controller (GUPFC) model in the hybrid current power mismatch Newton–Raphson formulation (HPCIM). In this model, active power, real and imaginary current components are injected at the terminals of series impedances of GUPFC. These injected values are calculated during the iterative process based on the desired controlled values and buses voltage at the ... إقراء المزيد

Genetic polymorphism of toxoplasma gondii from recently infected aborted Egyptian women.

2018-09-17 14:46:17 الكلمات المفتاحية abortion, genotype , RFLP , t, abortion, genotype , RFLP , t, abortion, genotype , RFLP , t, abortion, , abortion, genotype, RFLP, Toxoplasma gondii,
Genetic polymorphism of toxoplasma gondii from recently infected aborted Egyptian women.
Toxoplasmosis caused by Toxoplasma gondii is one of the most prevalent parasitic diseases in human beings. Human toxoplasmosis can be associated with serious clinical manifestations, particularly in developing fetus. The aim of the current study was to identify the possible lineage type of Toxoplasma gondii, molecularly detected in placental samples of women whose pregnancies were spontaneously terminated in the first ... إقراء المزيد

Relation between Internet Addiction and Sleep Problems among Adolescents

2018-09-22 16:36:11 الكلمات المفتاحية Key words: Internet addiction, ,
Relation between Internet Addiction and Sleep Problems among Adolescents
The prevalence of internet use among adolescents has extremely increased and has negative impact on adolescents' lives. It appears to be related with problematic sleep habits and sleep problems. THE STUDY AIMED TO investigate the relation between internet addictions and sleep problem among adolescents. RESEARCH DESIGN: A Cross-sectional research design was adopted for this study. THE STUDY SAMPLE: A total ... إقراء المزيد

Societal factors that induce career change decision among nurses working at different Sohag city hospitals

2018-09-16 10:54:14 الكلمات المفتاحية career, career change, ,
Societal factors that induce career change decision among nurses working at different Sohag city hospitals
Background Nurses who have positive professional images will have stronger relations with their AQ35 patients, peers, and community as a whole. Decision to leave might be an indication that nurses are not committed to their profession. Aim This study aimed to determine the societal factors that induce career change decision among nurses working at different Sohag city hospitals. The study ... إقراء المزيد

Propofol versus granisetron in prophylaxis of postoperative nausea and vomiting in children undergoing tonsillectomy

2018-09-16 18:48:01 الكلمات المفتاحية granisetron, Propofol, ,
Propofol versus granisetron in prophylaxis of postoperative nausea and vomiting in children undergoing tonsillectomy
propofol versus granisetron in prevention of postoperative nausea and vomiting in children undergoing tonsillectomy إقراء المزيد

valuation of Circulating Fatty Acid Synthase as a Biomarker in Non-Alcoholic Fatty Liver Disease

2018-09-12 07:46:27 الكلمات المفتاحية NAFLD, Fatty Acid Synthase, ,
valuation of Circulating Fatty Acid Synthase as a Biomarker in Non-Alcoholic Fatty Liver Disease
doi: 10.4236/ojgas.2016.69028. إقراء المزيد

Patient With Cleft Maxillary Hypoplasia Who Underwent Distraction Osteogenesis and Conservative Therapies to Postoperative Velopharyngeal Insufficiency.

2018-09-15 14:28:05 الكلمات المفتاحية Cleft lip and palate, , Cleft lip and palate, maxilla,
Patient With Cleft Maxillary Hypoplasia Who Underwent Distraction Osteogenesis and Conservative Therapies to Postoperative Velopharyngeal Insufficiency.
The authors performed distraction osteogenesis using The Maxillary Distractor System (SYNTHES) to maxillary hypoplasia patient with cleft lip palate, and consequently improved the aesthetic complexion of the patient. Velopharyngeal insufficiency developed after bone elongation; the authors improved the insufficiency with conservative therapies such as articulatory training using the bulb attached palatal lift prosthesis. And then the authors got successful and ... إقراء المزيد

Chemical composition and bioactivity of Citrus aurantifolia and Citrus reticulata peel oils and enantiomers of their major constituents against Sitophilus zeamais.

2018-09-15 21:04:27 الكلمات المفتاحية bioactivity, , peel oils, enantiomers, Chemical composition, stored grain pest,
Chemical composition and bioactivity of Citrus aurantifolia and Citrus reticulata peel oils and enantiomers of their major constituents against Sitophilus zeamais.
Peel oils from _Citrus aurantiifolia_ and C. _reticulata_ cultivated in northeastern Brazil were analyzed using gas chromatography with flame ionization detection and gas chromatography-mass spectrometry. The insecticidal activity of the oils and both enantiomeric forms of the main constituent – limonene [(R)-(+)-limonene and (S)-(−)-limonene] – was evaluated against _Sitophylus zeamais_ under laboratory condition. The results were compared with deltamethrin as ... إقراء المزيد

Contributions to the petrography, petrochemistry and petrogenesis of Hamret Ghannam and Um Naggat granitoids, Eastern Desert, Egypt. Egypt.

2018-09-04 09:42:51 الكلمات المفتاحية , Egypt, geochemisrty. Granites, Eastrn Desert,
Contributions to the petrography, petrochemistry and petrogenesis of Hamret Ghannam and Um Naggat granitoids, Eastern Desert, Egypt. Egypt.
Field, petrographical and petrochemical studies revealed that Hamret Ghannam granite intrusion can be differentiated into two phases, an earlier phase of porphyritic granite and a later phase of alkali feldspar granite. Also Um Naggat granite intrusion is separated into pink granite, alkali feldspar granite and albite granite phases. However, it is argued that both granite intrusions are of magmatic origin. ... إقراء المزيد