About Journal

Kirkuk University Journal-Scientific Studies KUJSS is a scientific, open access, and refereed journal published since 2006 by the College of Science, Kirkuk University,  Kirkuk, Iraq. It publishes experimental and theoretical papers in the field of pure science and engineering, in English or Arabic. The manuscript shall be considered for publication only with the understanding that they are neither under concurrent consideration by any journal nor have been published elsewhere. We are using iThenticate software to check the originality of the submitted works for potential plagiarism. Manuscripts...
Read More ...

Study the Effect of the Amount of Clouds on the Number of Actual Hours of Sunshine at Selected Stations in Iraq

Jawdet Hedayet Mohammed

Kirkuk University Journal-Scientific Studies, 2021, Volume 16, Issue 1, Pages 1-27
DOI: 10.32894/kujss.2021.167891

This research aims to study the effect of the amount of clouds on the number of actual hours of Sunshine in selected stations in Iraq, namely (Mosul Station, Baghdad Station, Basra Station), using data (the amount of clouds and the number of actual hours of Sunshine) for a period of (31 years) for the period extending from (1980 - 2010), which were obtained by data available in the Iraqi Meteorological organization and Seismology. In this research, the effect of the amount of clouds on the number of actual hours of Sunshine was clarified by studying the monthly and seasonal change of the two variables, in addition to clarifying the nature of the relationship between them by calculating the correlation coefficient using Microsoft Excel (2010). The results indicated that there is a strong inverse correlation between both variables in The three study stations, where the values ​​of correlation coefficients ranged between (-0.92) – (-0.87) in the study sites, and this indicates that with the increase in the amount of clouds the number of hours of actual hours of Sunshine decreases, and vice versa.

Synthesis and Characterization of Some Copper (II) Complexes with New Schiff Bases Ligands

Marwa Mahmoud Al-Mafrgy; Hassan Ahmed Mohammed; Halla Mohamed Alzahwi

Kirkuk University Journal-Scientific Studies, 2021, Volume 16, Issue 1, Pages 28-47
DOI: 10.32894/kujss.2021.167893

The present work include preparation of some transition metal complexes Cu(II) with Schiff base ligands L1 (benzylideneamino)pyrimidin-2(1H)-one) L, L2(Z)-4-((2-hydroxybenzylidene)amino)pyrimidin-2(1H)-one) L2 and L3 4,4'-((1E,1'E)-pentane-2,4-diylidenebis(azanylylidene))bis(pyrimidin-2(1H)-one) (pdp). The ligands were prepared from condensation reaction of the benzaldehyde, Salicyaldehyde and Acetylacetone with cytosine respectively. These compounds were characterized by elemental analysis, molar conductivity; magnetic susceptibility measurements, NMR spectroscopy for ligand, electronic and infrared spectroscopy.
These complexes were classified into two classes:
1-[CuL1Cl2]  , [CuL2Cl2] ,  [CuL3Cl2
2-[Cu(L2)2Cl2] , [Cu(L2)2Cl2] , [Cu(L3)2Cl2]
 Low conductance value showed that all the prepared complexes are non – electrolyte and the magnetic susceptibility measurements, electronic spectroscopy showed that all the prepared complexes of Type (1) have a square planar geometry for copper complexes, the complexes of Type (2) have an octahedral geometry.

Characteristics of Energy States and their Calculation Using IBM-1 and IVBM of Isotones 180HF, 182W, 184Os, 186Pt

Mohammed Ali Ahmed Alnejm

Kirkuk University Journal-Scientific Studies, 2021, Volume 16, Issue 1, Pages 48-72
DOI: 10.32894/kujss.2021.167894

The positive ground-state band (GSB) of isotones for N = 108 has been calculated using the Interacting Bosons Model (IBM-1), and Interacting Vector Boson Model (IVBM), while the negative-parity band (NPB) of  , has been calculated using the (IVBM). since (IBM-1) have different calculation according to the characteristics of each nucleus, these characteristics were identified using different method, Plotting  the relation of the  moment of inertia ( )  against the rotational frequency of the emitted photons ( ) during nuclear transition between different energy states were determined, The calculation shows that    nucleus do not have any back-bending effect which indicates that its characteristics have not changed, While  have a back-bending which indicate  that a change in their characteristics. Also using the relation between different excited states energies to their preceding values, one can determine  the characteristic of each nucleus which shows a rotational characteristics for  nucleus, while  have transitional characteristics between the two vibrational and rotational challenges, To get to know the characteristics of the nucleus more accurately the relation of the gamma energy over spin ( ) as a function of the spin (I) E-GOS was drown, the calculation showed pure rotational characteristic for  nucleus, While the nuclei have gamma soft O(6) characteristic, When staggering phenomena  between (NPB) and (GSB) has been studied, The contour plot show that  nucleus did not reach zero value which refer to the constancy of their characteristics.

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

Spectrophotometric Method for Estimation of Promethazine- HCl in Pharmaceutical Formulation Based on Oxidative Coupling with the Reagent m-Amino Benzoic Acid in Presence of N-Bromosuccinimide.

Mohammad Salim Abdulaziz; Aseen N. Shareef; Mohsin Hamza Bakir

Kirkuk University Journal-Scientific Studies, 2019, Volume 14, Issue 4, Pages 236-256
DOI: 10.32894/kujss.2019.14.4.14

An easy, rapid and sensitive novel spectrophotometric method for estimation of trace amounts of Promethazine-HCl in aqueous solution is described. The method is based on using the oxidative coupling reaction of Promethazine-HCl with m-amino benzoic acid reagent at pH1.2 in the presence of N-bromosuccinimide to produce an intense green color, water soluble, product which exhibit maximum absorbance at 592 nm. Beer's law is obeyed over concentration range of (2-26 µg/ml), with a Ԑ 9.754×〖10〗^3 l/mol.cm, Coefficient determination (R2=0.9991). Sandell̕s index of 0.03289 µg/cm^2, the average recovery is 100.396 %, RSD does not exceed 0.3096 %, LOD of 0.1949 µg/m1 and LOQ of 0.5905 µg/m1. The proposed method was applied successfully for determination of PMZH in its pharmaceutical formulations..

Study of Pollution in Heavy Metals and Some Physico-Chemical Variables of Wastes Water from Kirkuk City Hospitals

Theiab.G. Hussein; Kameran.Sh. Hussein; Abdullah.S. Kazael; Sarhan. A. salman

Kirkuk University Journal-Scientific Studies, 2018, Volume 13, Issue 2, Pages 230-252
DOI: 10.32894/kujss.2018.145825

The selection was made on a number of hospitals to conduct a study on the quality of the water. The samples were taken before and after treatment from three hospitals in the city of Kirkuk, Kirkuk General Hospital, Azadi Educational Hospital and Children's Hospital. The samples were collected at regular intervals Six months from September (2016) to February (2017) . The first phase, which included the measurement of some physical variables and chemical variables, included physical measurements, temperature measurement, electrical conductivity (EC), total dissolved solids (T.D.S), (T.S.S), all of which were above the permissible limit, except for the temperature. Chemical analyzes included (pH), (BOD) and (COD),(SO4-2), (PO4-3) and(NO3). The results of the study indicated that the applications were characterized by the rise of most chemical standards, most of which exceeded environmental determinants except (SO4-2) , and (pH), within the limits allowed for Iraqi specifications, and the second phase of the study, to demonstrate the extent of contamination of heavy elements, and included the measurement of the study of heavy elements: (Fe, Cd, Cr) The availability of cadmium and chromium, at concentrations higher than is permitted, while the concentration of iron elements was less than the limit allowed globally and locally, and the study used the research method And statistical analysis of data from wastewater models studied

Design of the illumination system in the field emission Scanning Electron Microscope (SEM)

Mohammed Abdullah Hussein; Faez Ahmed Mohammed

Kirkuk University Journal-Scientific Studies, 2017, Volume 12, Issue 4, Pages 287-296
DOI: 10.32894/kujss.2017.132396

The main goal of This Work is to survey the field emission scanning electron microscope (SEM) to obtain on the optimal design for illumination system. The SEM optical column contains of illumination system that form a focused beam by electrons are released and animated to incident on the specimen surface, this backscattered electrons from the specimen surfaces, finally forming an image. mainly the optical column include a field emission source as the beam source, illumination system, electron control unit, and unit the vacuum. use of a finite element analyses in the design process of the SEM ingredient to be optimally determined. By the analysis we can predict the beam emission characteristics and relevant trajectories were predicted from the analysis of the present work from which a systematic design of the electron optical system is enabled.

Synthesis and characterization of some new2- mercapto benzimidazole derivative from ortho phenylenediamine

Ihmood kh .jebur; Noaman F.N. Al-hitti

Kirkuk University Journal-Scientific Studies, 2015, Volume 10, Issue 4, Pages 222-239
DOI: 10.32894/kujss.2015.124183

of hydrazones (N3- N10) were synthesized from the reaction of compound (N2) with various substituted benzaldehydes (aceto phenone) gave hydrazone compounds(N3-N10).Substituted compounds(N11-N12) , compound (N13) , compounds(N14-N16) ,compounds (N17-N18),Were synthesized from cyclization of hydrazones (N3- N10) using chloro acetic acid or tri chloro acetic acid or thio glycolic acid or chloro acetyl chloride respectively.
The synthesized compounds were identified according to their physical properties, spectroscopic data (IR and1H- NMR) in addition to systematic identification of some active functional groups in these compounds. This the research includes synthesis of some new derivatives of 2-mercapto benzimidazole (N1), the compound (N1), prepared by reaction of o-phenylene diamine with carbon disulfide in alcoholic potassium hydroxide. Then the compound (N1) was treated with hydrazine hydrate in ethanol to give 2-hydrazinobenzimidazole ( N2).A Number

Construction of New Coated Carbon Electrodes for Determination of Sildenafil Citrate Drug

Aveen K. Mohammed; Ali I. Khaleel; Nawzad N. Ahmed

Kirkuk University Journal-Scientific Studies, 2020, Volume 15, Issue 2, Pages 1-16
DOI: 10.32894/kujss.2020.15.2.1

In this research, new coated carbon electrodes were constructed and used for the determination of Sildenafil citrate (SILC) drug. The electrodes were constructed by preparing ion-pair for (SILC) with phosphotungstic acid (PTA) or phosphomolybdic (PMA) acid using   dibutyl phthalate (DBP) as a plasticizer. These electrodes showed good sensitivity towards SILC with linear range of (1.0´10-7-1.0´10-2) M, correlation coefficient, (0.9990), the life time (120) days, optimum temperature range (23-65) oC and optimum pH range (2-5) for both electrodes, limit of detection (5.055´10-8 and 5.116´10-8) M, slope (57.29 and 59.10) mV/decadefor SILC-PTA and SILC-PMA electrodes respectively. These electrodes were successfully applied for determination of SILC in pure and pharmaceutical preparation form(tablets) with recovery of not less than 98%.

Effect of Spraying Urea in Yield and Components Properties in Upland Cotton Gossypium Hirsutum

Naif S. Saleh; Arshad Th. AL-Niaumi; Fathel R. AL-Kana

Kirkuk University Journal-Scientific Studies, 2011, Volume 6, Issue 1, Pages 32-43
DOI: 10.32894/kujss.2011.42538

An experiment was conducted in randomized complete block design with four replicates to study the effect of spraying nitrogen fertilizer as a urea with concentration 0 , 10 , 20 , 30 mg/liter on the characters of cotton Koker 310 at summer season 2007 in experiment station of cotton research unit in mosul technical institute , all the agricultural practices were done for the end of season where study the plant height , number of nodes to the first fruit branch , number of vegetative branches , number of fruiting branches , number of bolls /plant , boll weight , seed index , lint index , lint percentage and seed cotton yield kg/h . Spraying urea fertilizer in concentration 20 mg/liter significantly exceeded from control in plant height , number of fruiting branches , number of bolls/plant , boll weight and seed cotton yield kg/h in percent 63.72 , 24.49 , 43.92 , 8.92 , 42.59% respectively while seed index significantly differed from control treatment in other used concentrations . Spraying urea fertilizer reflected significantly linear regression correlation to increase seed index and degrease lint percentage in addition to positive significant correlation for seed cotton yield with plant height , number of vegetative branches , number of fruiting branches , number of bolls /plant , boll weight and seed index .

A Study of the Operational Conditions Influence on the Performance of Kirkuk Gas Plant

Abid Zedan Khalaf

Kirkuk University Journal-Scientific Studies, 2015, Volume 10, Issue 2, Pages 72-90
DOI: 10.32894/kujss.2015.103479

Kirkuk gas turbine power plant is supplied by the gaseous fuel from north gas company. The results showed that the theoretical efficiency of the unit is a function for two parameters; the compressor input temperature and the pressure ratio rp . So, the pressure rp ratio depends directly on the compressor input temperature. If the net work of the unit Wnet (Wt - Wc) is taken to be an index for the performance, the efficiency ƞ will be more in summer than that in winter because of the considerable reduction in compressor work Wc , while if the specific energy produced (or consumed specific fuel SFC) is taken as an index for the performance; the actual efficiency ƞac is more in winter since the specific energy produced in winter is greater approaching (4.5 kW.hr.m-3), while it did not exceed (2.8 kW.hr.m-3) in summer, this belong to the performance improving as the load increases approaching the design load, this is prevailing on the power plant operated by the diesel, heavy fuel or crude oil.

Study the Effect of The Annealing and Doping on the Some Optical Properties of (ZnS) Thin Films

Suzan Abdullah hasan; Abdul Majeed Iyada Ibraheem; r Naji Majeed

Kirkuk University Journal-Scientific Studies, 2013, Volume 8, Issue 1, Pages 44-53
DOI: 10.32894/kujss.2013.77602

In this research we study the effect of Annealing and doping by 10% Cupper on some optical properties of (ZnS) thin films (energy gap, absorption coefficient , extinction coefficient) as a function of photon energy .The optical properties were studied through Visible and Ultra-volit wavelength range (300-900nm) using UV-visible spectrometer, these properties were studied before and after annealing and doping . It is found that the energy gap was (3.6eV) before annealing and doping but after annealing and doping it is found (3.7eV, 3.4eV) respectively. Absorption and extinction coefficient increased after annealing and decreased after doping .

Using of Climatic Water Balance to Assess The Reality of Groundwater Recharge in Baiji – Tikrit Sub Basin North West of Iraq

Omer S. Ibrahiem; Nawfal H. Ali; Sabbar A. Salih

Kirkuk University Journal-Scientific Studies, 2012, Volume 7, Issue 1, Pages 79-107
DOI: 10.32894/kujss.2012.44395

The Annual and monthly averages of rainfall and temperature of the tow tikrit and baiji meteorological stations showed that the general annual rainfall is (185) mm. The maximum rainfall is 35.5 mm in January and the minimum is (0.0) mm in august while the general monthly averages of temperature ranging between (8.7 C° in January - 36.5 C° in july ). After calculating the potential evapotranspiration values PE by thornthwait method then derive the values of water surplus WS in order to determined the amount of water that permeates to the groundwater level for each zone in the basin. After the main elements was selected depending by equations that has been developed for each zone as follows : 26 % of rainfall permeates to replenish the groundwater in the basin when the zone A lack o opportunity to allow infiltration of rainfall to the groundwater level for both A and B zones are based on monthly averages of whole surveillance period ( 1989 – 2009 ). The soil moisture amount (SM) is 25 mm for the zone A and 75 mm for each of A and B zones. When we search in the years that exceeds the general annual averages of rainfall ( 185 ) mm , founded that there are (9) years beyond the mentioned averages and account for about (43 %) of surveillance period where the general annual average equal to (242.39) mm and maximum monthly average of the rainfall is ( 41.86) mm in march and lowest average is (0.0) mm in july and august. Depending on these years mentioned, the water surplus for both zones C and B , showed that an increase about ( 29.93) mm from the average of annual rainfall equal to (242.39) mm and (12.34 %) from the rainfall permeates to fed the groundwater in B zone. 7 % adopted as a surface runoff from the rainfall equal to (16.96) mm and the ratio groundwater recharge in C zone is equal to (12.97 ) mm. The variation in groundwater values of recharge along the basin ( A,B and C ) is only a reflection for the type and texture of the deposits on the hand and varying depths, simple differences in topography and evolution of surface water drainage especially in the western part of C zone on the other hand . while the demonstrating convergence of inventories renewed values for the three zones although they have different area and water depths pervasive in all of them but the justification for this approach the increase in area of zones A , B and C, accompanied by decreasing values of deep water permeates for each zone must be noted here that the opportunity to renew stocks of ground water for both B and C amounting to 42 % of the prospect for renewed stocks of water in the zone A as well as the presence of large quantities of leaked water from the liquefaction and sewage water in zone A .

Keyword Cloud