Keywords : Development

Oocyte development in liza abu

Gazwa. D. Al-Nakeeb; Mukhtar. Kh. Haba

Kirkuk University Journal-Scientific Studies, 2010, Volume 5, Issue 2, Pages 53-41
DOI: 10.32894/kujss.2010.41425

Khishni fish Liza abu were collected from Tigris river to study oocyte development in this fish .Present study showed that the oogenesis process include seven stages divided according to cell size,chromatin matter and vitellogenesis .The first stage represent as Oogonia,the second is Early oocyte,the third is Multinucleated stage,then Yolk nucleus stage (indicator to beginning of vitillogenesis),followed by primary and secondary stages and lastly Maturation stage

Climatic conditions effects on formation and development status of some soils in northern part of Iraq/Kurdistan region

Salim Neimat Aziz; Ahmed Saleh muhaimeed; Ibrahim M.Amin

Kirkuk University Journal-Scientific Studies, 2009, Volume 4, Issue 1, Pages 70-86
DOI: 10.32894/kujss.2009.40806

Two biolit areas were selected within different climatic conditions in northern Iraq (Kurdistan region). Four pedons located in Ibraheemawa and five pedon in Salehaga areas. The two locationswere used for rain feed crop production. The two areas was covered with a detailed soil survey . Mapping units were obtained from Al-Agidi proposed soil classification at the series level for the Iraqi alluvial & zonal soils.Nine pedons representing the most extensive dominant soil series within the two locations were selected. A complete soil characterization was made for each soil series which include, PSD, ECe, Lime, O.M, active lime, PH, C.E.C, B.S.P, and C.E. to reveal their genesis (formations & development). Characterization was made preceded by morphological studies .The results show that a great effects of climatic conditions on the status of soil development reflected by horizons type , soil thickness and type of diagnostic horizons including surface and sub surface horizons . Also the results clearly showed the effects of climatic conditions on the amount and pattern of distribution for most soil components .The studied pedons at Ibrahimawa region were more developed than those at Salehaga region due to the difference in climatic conditions.

Development of high performance liquid chromatographic method for determination of famotidine and ranitidine.HCl in pharmaceutical preparations

Kirkuk University Journal-Scientific Studies, 2007, Volume 2, Issue 1, Pages 44-56
DOI: 10.32894/kujss.2007.43546

A rapid and sensitive high performance liquid chromatographic method has been developed , validated and applied for the determination of famotidine and ranitidine.HCl in pharmaceutical preparations.The effects of pH, mobile phase composition and concentration of organic modifiers on retention of the investigated drugs were studied. Famotidine and ranitidine.HCl were chromatographically separated from tablets using two columns of different polarity ; Lichrosorb RP-18 ( 15cm x 4.6mm i.d ) 5μm particle size and Lichrosorb RP-8 (25cm x 4.6mm i.d ) 5-10 μm particle size with mobile phase composed of 20:80 v/v of acetonitrile in 0.2% diethyl amine in water (pH=3). UV detection was set at 270nm for famotidine and 322nm for ranitidine.HCl . The calibration graph was linear in the concentration range of 20-70μg .ml-1 for famotidine and 20-120μg .ml-1 for ranitidine. The RSD% was not more than 0.85% and relative error between -0.75-2.08% indicating a good precision and accuracy. The limits of detection were found to be (1.13) and (0.83)μ for famotidine and ranitidine.HCl respectively with recoveries ranged from 98 to 99% .