CONTENTS 243 Cognitive Impairmentsin Patients with Spinocerebellar Ataxia Type 3 (SCA3) in China Ruihao Wang, Song Tan, Bo Song, Jingtao Wang, Fang Ge, Shilei Sun, Wang Miao, Jun Wu, Limei Wang, Rui Zhang, Yuan Gao, Changhe Shi, Huixia Niu, Hui Fang, Avinash Chandra, Yuming Xu 1655-1659 244 Xanthan production by a novel mutant strain ofXanthomonas campestris: Application of statistical design for optimization of process parameters Mona E.M.Mabrouk; Amani, M. D. El-Ahwany; Maha M. B. Beliah; Soraya A. Sabry 1660-1667 245 The Role Of Small Business In Economical Development Masoud Hamzehpour 1668-1675 246 ThePsychological Problems among Children Suffering from Chronic Diseases Zeinab Fathy El-Sayed and Asmaa Hafez Afefe Barakat 1676-1683 247 Effectiveness of Vocational Instruction with Reflection and Review on Mastery of Safety Knowledge and Skills Bani Salameh, Zakaria, Bani Salameh Lina, Sabbah Saher 1684-1700 248 Protection of the Mushroom (shiitake "Lentinus-edodes) against Carbon-Tetrachloride-Induced Renal Injury in Rats Thanaa. A. El-kholy; Naglaa, H. M. Hassanen, and Hanan.Y.Abbas 1701-1708 249 Primary Intracranial Germ Cell Tumors: A Single-Centre Experience. Shagufta T. Mufti (MBBS,MD), Saleh S. Baeesa (MD, FRCSC)Jaudah A. Al-Maghrabi(MD, FRCPC) 1709-1715 250 Effect of Ionic Liquids in CO2Capture from Natural Gas Maher I. Nessim, Renee I. Abdallah, Gamal E. Elsayed, and Raghda A. El-Nagar 1716-1723 251 Electrical Stimulation versus Rebounding Exercise on the Degree of Genu Recurvatum in Children with Central Hypotonia Abdel Aziz A. Sherief and Somaia A. Hamed 1724-1728 252 Management of gastrointestinal stromal tumors: Five years period, Tanta experience Mohamed El-Shebiney, Alaa Maria, Emad Sadaka and Ayman El-Namer 1729-1735 253 Textbook Content Transformation: Interpretive Structural Modelling (ISM) Approach Mohd Nazri Abdul Rahman, Norlidah Alias, Saedah Siraj & Dorothy DeWitt 1736-1745 254 Optimization and Statistical Evaluation of Medium Components Affecting Dextran and Dextransucrase Production by Lactobacillus acidophilus ST76480.01 Rania MA Abedin, Aliaa.MA El-Borai, Mona Abo Shall, Samy El-Assar 1746-1753 255 A prospective study of Green Tea and panax Ginseng against mutagens & carcinogens produced during Thermolyzed Meat and Fish Osfor, M. M. H.; A. El-Ashi; M. El-Madbouly; Mona. S. zaki; and Doaa Negm 1754-1765 I 256 Photoelastic analysis of Discontinuous Infilled Frame at Loss of Soil Support Eman A. El-Shamy 1766-1778 257 IS there a relation between TNF-α 308 Promoter Gene Polymorphism and a risk of Coronary Artery DiseaseIn patients with Type 2 Diabetes Mellitus? Gamal F. El Naggar and Hesham El-Serogy 1779-1785 258 Defensive Interaction of Different Lycopersicum esculentum cvs Infected by Tomato Bushy Stunt Virus Hafez EE, Youssef AS, Ali GS, Fattouh FA 1786-1794 259 Assessment of Drinking Water Quality Nagwa S.M. Aly, Rabab M. Ali and Hemmat A. El badawy 1795-1803 II