| 000 | 020220000a22003490004500 | ||
|---|---|---|---|
| 003 | EG-GICUC | ||
| 005 | 20250223025626.0 | ||
| 008 | 060917s2006 ua a f m 000 0 eng d | ||
| 040 |
_aEG-GICUC _beng _cEG-GICUC |
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| 041 | 0 | _aEng | |
| 049 | _aDeposite | ||
| 097 | _aPh.D | ||
| 099 | _aCai01.07.06.Ph.D.2006.Mo.E. | ||
| 100 | 0 | _aMohamed Nasr Leithy | |
| 245 | 1 | 0 |
_aeffect of heavy metals on microbial activity insome ecosystems / _cMohamed Nasr Leithy ; Supervised Mohamed Zakaria Sedik , Zahira Said Tawfik |
| 246 | 1 | 5 | _aتاثير المعادن الثقيلة على النشاط الميكروبى فى بعض الاوساط البيئية |
| 260 |
_aCairo : _bMohamed Nasr Leithy , _c2006 |
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| 300 |
_a133p : _bill ; _c25cm |
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| 502 | _aThesis (PH.D.) - Cairo University - Faculty Of Agriculture - Department Of Microbiology | ||
| 520 | _aThe effect of four metal concentrations , as well as , six Gamma - irradiation doses on the activity of cellulase , urease and dehydrogenase was determinedApplication of heavy metals at any rate caused noticeable reduction in their activity depending upon the metal type and concentrationEven at the low concentration , Cr6+followed by Hg2+had the most harmful effect on the enzymatic activities , while Pb2+showed the least toxicitySoil exposure to Gamma - irradiation differently affected the enzymatic activitiesThis varied from stimulating effect on urease to suppressive one on dehydrogenaseGenerally , the high doses of - rays inhibited the activity of the three enzymes and dehydrogenase proved to be the most susceptible enzyme toward radiation | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aHeavymetals | |
| 653 | 4 | _aOrganic motter | |
| 653 | 4 | _asoil pollution | |
| 700 | 0 |
_aHoda Ali Sadek , _eSupervisor |
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| 700 | 0 |
_aNahla Abd El Fattah Elkady , _eSupervisor |
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| 700 | 0 |
_aSanaa Abd El Kareem Helmy , _eSupervisor |
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| 856 | _uhttp://172.23.153.220/th.pdf | ||
| 905 |
_aAml _eCataloger |
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| 905 |
_aEsam _eRevisor |
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| 942 |
_2ddc _cTH |
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| 999 |
_c17002 _d17002 |
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