000			02221cam a2200313 a 4500
003			EG-GiCUC
008			190515s2018 ua dho f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.20.M.Sc.2018.No.N
100	0		_aNoha Hassan Nassar
245	1	0	_aNuclear and related analytical techniques used to bio-monitor trace element in aquatic ecosystem of Egypt using some specific algae / _cNoha Hassan Nassar ; Supervised Mohamed M. Sherif , Marina Frontasyeva
246	1	5	_aاستخدام أجهزه التحليل النووى لتتبع العناصر في النظم البيئيه المائيه في مصر باستخدام بعض انواع الطحالب
260			_aCairo : _bNoha Hassan Nassar , _c2018
300			_a66 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physics
520			_aThe concentrations of Na, Mg, Al, S, Cl, K, Ca, Sc, Ti, V, Mn, Fe, Co, Ni, Zn, As, Se Br, Rb, Sr, Mo, Ag, Sb, I, Cs, Ba, La, Sm, Tb, Yb, Hf, Ta, Th and U in some types of marine macrophytes (algae and seagrass), collected from 7 stations along the Mediterranean Sea coast of Egypt were determined using instrumental neutron activation analysis. The contents of elements in marine macrophytes indicated that they accumulated elements at different levels depending on their type of species (brown, red, green and seagrass) and the ambient water conditions. In general, the levels of classically investigated elements, particularly, Mn, Fe, Co, and Ni determined in the macrophytes in the present study are lower or within the wide range of values previously reported for the Mediterranean Sea. While the concentrations of Zn measured in some samples showed a higher trend reflecting a possible source of Zn contamination
530			_aIssued also as CD
653		4	_aAlgae and seagrass
653		4	_aElemental Analysis
653		4	_aNeutron Activation Analysis
700	0		_aMarina Frontasyeva , _eSupervisor
700	0		_aMohamed M. Sherif , _eSupervisor
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c71983 _d71983