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91.
A. M. Hussein A. A. Kassem M. ElGarhy E. Abdullah 《Isotopes in environmental and health studies》2013,49(8):327-330
The tissue distribution of colloidal zirconyl phosphate-P32 and its retention following i.m and i.v. injection in mice were studied. About 63 per cent of the i.m. injected P32 activity was retained at the site of injection after 5 days, suggesting the use of the colloid in the local treatment of tumours. The deposition of the colloid in bone and liver after i.v. injection presented zirconyl phosphateP32 as useful in the radiotherapy of bone and liver disease. 相似文献
92.
93.
Abstract A study has been made of the temperature dependence of the d.c. conductivity of pure and borated low density polyethylene LDPE (4% and 8% borax). The above calculations were carried out before and after X-ray irradiation. The irradiation dose was varied from 0 to 1000 rad. The d.c. electrical conductivity of Polyvinyl chloride (PVC) and perspex was measured as a function of temperature ranging from 20°C to 100°C. These samples were irradiated with X-rays of dose 200 rad. The variation of the d.c. conductivity of the treated samples versus temperature was investigated. The results reveal that the d.c. conductivity of LDPE is highly affected by radiation and/or dopant. In addition, the sensitivity of the explored polymers to X-ray irradiation is strongly dependent on its chemical nature. 相似文献
94.
95.
A De A Mitra A Ray SR Banerjee M Sengupta A Chatterjee S Kailas HS Patel MG Betigiri SK Dutta 《Pramana》1999,53(3):549-552
In this paper, we report our measurements of back-angle oxygen and carbon particle yields from 16O+89Y, 12C+93Nb reactions forming the same compound nucleus 105Ag at the same excitation energy and spin distribution. We find anomalously large oxygen yield and entrance channel dependence
at high excitation energies from 16O+89Y reaction implying formation of a dinuclear orbiting complex. Possible connection between nuclear orbiting and fast fission
is also discussed. 相似文献
96.
Heating paracetamol in strongly alkaline medium with 4-nitrosoantipyrine gives a red colour with maximum absorption at 515 nm. Mefenamic and flufenamic acids can be determined colorimetrically after extraction as ion-pairs with Methylene Blue. 相似文献
97.
A. Kassem A. Sarheel N. Al-Somel 《Journal of Radioanalytical and Nuclear Chemistry》2005,262(3):555-561
Instrumental neutron activation analysis (INAA) have been used for the determination of some major, minor and trace elements (As, Cr, Co, Ni, Zn, Sb, Sc, Ce, Ti, Fe, Mn and V) in various plant leaves together with their soil. The accuracy of the measurements have been evaluated by analyzing a number of plant and soil reference materials, precision have been estimated by triplicate analysis of the sample as well as that of the reference material. The obtained accurate and reliable data of some trace elements on microgram level for plants and soil will serve as baseline values and will be helpful to monitor the changes in the trace element content of soil and plant leaves.The authors are thankful to Prof. I. Othman General Director of AECS for his encouragement and his support. 相似文献
98.
Two new biphenyl esters and three biflavonoids were isolated from the aqueous methanol extract of the fruits of Schinus terebenthefolus. The spectral data of tetrahydrorobustaflavone have been recorded and assigned for the first time. Characterization of the structures was achieved by various spectroscopic methods.Published in Khimiya Prirodnykh Soedinenii, No. 5, pp. 369–371, September–October, 2004. 相似文献
99.
Walaa S. El‐serwy Hanaa S. Mohamed Weam S. El‐serwy Neama A. Mohamed Emad M. M. Kassem Eman S. Nossier Al Shimaa G. Shalaby 《Journal of heterocyclic chemistry》2019,56(7):2027-2035
A new series of thiopyrimidine‐5‐carbonitrile derivatives were synthesized and the chemical identity of them was established on the basis of spectral methods. The antimicrobial properties of all derivatives were investigated against Gram‐positive and Gram‐negative bacteria as well as fungal strains. The results of the antimicrobial screening showed that compounds 4 , 11 , and 12 have a higher and broad spectrum efficacy against all the tested organisms in comparison with the reference drugs. Interestingly, the most active compounds 4 and 12 showed good binding assay results with Escherichia coli DNA gyrase comparable to that of the reference, methotrexate. Furthermore, a molecular docking study of these compounds was carried out to investigate their binding pattern with the target, DNA gyrase. 相似文献
100.
Kassem A. Sarheel A. Al-Somel N. 《Journal of Radioanalytical and Nuclear Chemistry》2004,262(3):555-561
Instrumental neutron activation analysis (INAA) have been used for the determination of some major, minor and trace elements (As, Cr, Co, Ni, Zn, Sb, Sc, Ce, Ti, Fe, Mn and V) in various plant leaves together with their soil. The accuracy of the measurements have been evaluated by analyzing a number of plant and soil reference materials, precision have been estimated by triplicate analysis of the sample as well as that of the reference material. The obtained accurate and reliable data of some trace elements on microgram level for plants and soil will serve as baseline values and will be helpful to monitor the changes in the trace element content of soil and plant leaves.The authors are thankful to Prof. I. Othman General Director of AECS for his encouragement and his support. 相似文献