Volume 29, Issue 1, Winter 2020, Page 1-335

Spectrophotometric Determination of 1- Naphthylamine by Diazotization and Coupling with 8-Hydroxyquinoline

Israa Ass’ad Jarjees; Sameer A.Rahim Sa’eed

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 1-14
DOI: 10.33899/edusj.2020.164359

A spectrophotometric method for the assay of micro amount of 1- naphthylamine (1-NPA) has been suggested .The method based on the reaction with nitrite ion to form the corresponding diazonium salt followed by coupling reaction in a alkali medium of sodium hydroxide with 8- hydroxyquaniline to form stable and a soluble orange azo dye. The intensity of absorbance for the resulting orange azo dye is measured at 492.5 nm and. Beer’s law is obeyed in the concentration range of 2.5– 125 g of 1-NPA in a final volume of 25 ml, with a molar absorptivity of 2.505 104
L.mol-1.cm-1, a relative error of 0.16 to + 0.65 % and a relative standard deviation of  0.37 to 0.98 %, depending on the concentration level of 1-NPA .The method has been successfully applied for the assay of 1-NPA in river water.

Air Blowing Oxidation Process for Improving of Rheological Properties of Sulfur Treated Asphalt

Wijdan Mohammed Saleh

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 15-21
DOI: 10.33899/edusj.2020.164360

There is a growing need for the production of a certain types of asphaltic materials having a good rheological properties compared with the non-modified a asphaltic materials can be using as a paving materials.
In this research Rheological properties of Beije asphalt modified using oxidation process in the present of Sulphur and chlorides of (iron and zink).
In this research we obtained asphaltic materials which can be used in paving and mastic according to the measuring of the (ductility, penetration and softening point.

New Mixed Ligands With Nickel (II) Complexes, Study of Their Physical & Spectral Properties , Antibacterial Activities and Laser Irradiation

Zuhoor Fathi Dawood; Alaa Jassim Mhommed

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 22-42
DOI: 10.33899/edusj.2020.164361

Preparation of two ligands acetonesemicarbazone (AScH) and 2,4-dioximepentane (DOXPH2) using three ways {includes reflux method, heating using microwave rays technique and ultrasonic technique}, and characterized using physical and spectral techniques. Followed by the preparation of new Ni(II) complexes containing mixed of three ligands {including (AScH), (DOXPH2) and 2-ethoxy-ethanol (EtO2H). The complexes have been characterized using quantitative, physical and spectral techniques. The electrical conductivity indicate that the complexes prepared in slightly neutral medium (pH=6-7) are electrolytes (1:2), meanwhile the complexes prepared in alkaline medium are non- electrolytes. All the ligands above acts as bidentate chelating ligands., and octahedral geometries of the complexes are resulted.
The effect of laser have been studied on solid ligands and complexes, no effects have been observed on all the compounds through the results of melting or decomposition point, conductivity and electronic spectra, this means that all the compounds are stable and are not affected by this kind of radiation. Also the biological activity of all the prepared compounds have been evaluated against pathogenic bacterial strains (Staphylococcus aureus, Streptococcus species and E. coli), all the compounds were found to have no antibacterial activity .

Synthesis Some of New Substituted 1,3,4-Thiadiazole and 1,2,4-Triazole

Tamara talal alsafar; amal Nafe Ali

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 43-59
DOI: 10.33899/edusj.2019.125949.1008

The aim of this paper, the synthesis of new series of substituted 1,3,4-thaidiazole and 1,2,4-triazol from reaction of the carboxylic acid (2-naphthoic acid,4-methyl benzoic acid) with absolute ethanol in the presence of concentrated sulfuric acid to give esters. the above synthesis ester were converted to acid hydrazide by their reaction with hydrazine hydrate in ethanol, which then reacted with ammonium thiocyanate and hydrochloric acid in ethanol or with phenylisothiocyanate in absolute ethanol to give substituted thiosemicarbazides compounds. the substituted thiosemicarbazides then uses to synthesis of many hyterocyclic compounds like substituted 1,3,4-thiadiazole and 1,2,4-triazole by its reaction with concentrated sulfuric acid and sodium hydroxide respectively. the substituted thiosemicarbazides then cyclization to substituted 3,4-diamine-1,2,4-triazole when treated with hydrazine hydrate. And finally the N- acetyl-N-substituted hydrazide compounds synthesis by treated hydrazide with acetyl chloride in anhydrous tetrahydrofuran which then cyclized to 2-methyl substituted-1,2,4-thiadiazole by their reaction with diphosphorus pentoxide in xylene. The structure of the synthesized compounds were confirmed By physcical & spectroscopic techniques infrared (IR) and (1H-NMR) data.

Spectrophotometric determination of Aspirin and Pyridoxine Hydrochloride using 9- Chloroacridin reagent in aqueous solution

Intisar Adil Shehab; Theiaa Al-Sabha

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 60-74
DOI: 10.33899/edusj.2019.125898.1003

This research paper tackles a developed method for Aspirin and Pyridoxine drugs determination in their pure forms and pharmaceutical formulations. It is based on the formation of nucleophilic substitution reaction between given drugs and 9-Chloroacridine forming a reddish orange colours. The products show maximum absorption at 532 nm and 534 nm for Aspirin and Pyridoxine respectively. The method was adhering to the Beer's law over concentration range 0.2-18 and 0.4-24 µg/ml with molar absorptivity values 1.1×104 and 7×103 l. mol-1. cm-1 and average recovery 99.87% and 100.00 % for the given drugs respectively. No observed interferences appeared from the excipients commonly existed in pharmaceuticals. Successfully, application for both Aspirin and Pyridoxine was conducted in their pharmaceutical formulations. The continuous variations and the slope ratio of the products between Aspirin and pyridoxine hydrochloride were followed with 9-chloroacridine. The ratio of 1: 1 was obtained between the above two drugs and the reagent The stability constant of the products was 6.38 x 104 and 9.25 × 104 l / mol for both Aspirin and Pyridoxine Hydrochloride products respectively indicating the good stability of these products.

ـ Effect of Aqueous and Alcoholic Extract of Eucalyptus Camaldulensis Dehn Leaves on Growth of Fungal Root Rot of Pinus Brutia Ten In Vitro

Anwer Noori Mohammed Al-Khero; Muhannad Hamid Younis Al-Obaidy

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 75-92
DOI: 10.33899/edusj.2020.164364

Root Rot disease is one of important disease which caused great damage for Pinus brutia and was very clear  the field Survey of Mosul nurseries,3 nurseris in AL-Faisalih location, 3 nurseris in Muthanna, 1 nurseris in AL-Mohandiseen location and Nineveh Horticulture station, this was through October and December of  2017 and February , April , June and August of 2018.fungi were recorded like Fusarium solani  Mart Insulalation  ratia 27.80% ,Macrophomina phaseolina Tassi Goid Insulalation  ratia 18.76% and Rhzoctonia solani Khun Insulalation  ratia 16.48% which Isolated from Pinus brutia Seedling .Pathogenicity tests Results showed Fusarium poae was had high pathogenicity 87.5% Pinus brutia  seedling and the fungus was very effective at growth characteristics.   
The study of Eucalyptus camaldulnsis  leaves Extracts effect at the growth of  Isolated fungi growth inhibition and for all studying concentration as a compartment with aqueous extracted especially leaves Alcoholic extracts Rhizoctonia solani was morally effect by aqueous leaves extracted.                                                                                    

Combining Ability Analysis , Estimation of Heterosis and Some Genetic Parameters Using Half Diallel Cross in Bread wheat (Triticum aestivum L.)

Mohammed H. Ayoob

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 93-106
DOI: 10.33899/edusj.2020.164365

Five varieties of bread wheat (Triticum aestivum L.) Tamuz-3 Adnaniya, Abu-Greebe-3, IPA-99 and Sham-6 and their half diallel crosses were used to study general and specific combining ability for plant height, number of tillers per plant, number of spikes per plant, spike length , number of grains per spike, 100 grains weight and grain yield per plant. The result of the analysis of variance showed that the mean square of genotypes, (GCA) and (SCA) were highly significant for all studied characters. The ratio between the component variance of (GCA) and the component of variance (SCA) was less than one for all studied characters except for plant height which was more than one this indicate the importance of additive and dominance gene effects for all characters, but the dominance gene effects is more important for determining these characters. The largest and positive value for (GCA) effect was in the following parental varieties : Abu- Ghreeb-3 for plant height and number of grains per spike, IPA-99 for number of tillers and number of spikes per plant, Adnaniya for spike length and 100 grains weight and grain yield per plant. The (SCA) effects value in some hyprids was positive with desirable direction, but other hyprids showed negative with undesirable direction  for all studied characters therefor heterosis can be utilized for improve these characters. The hyprids (1x3), (1x4), (2x3),(2x4),(2x5),(4x5) revealed desirable and high significant heterosis for all studied characters. The broad sense heritability were high for all studied, however the narrowsense heritability were high for plant height and medium to remained characters. There were over dominance for all characters except partial dominance for plant height.

The Inhibitory Effect of Some Medical Plants Extracts In The Fungus Aspergillus fumigatus

Shifaa T. Jaafer; Abdulkarim Al-Nuaymi; Saleh E. Mohammed

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 107-120
DOI: 10.33899/edusj.2020.164366

Study the inhibitory effect of aqueous and alcoholic extract of four medical plants: Mentha longifolia, Mentha spicata, Cyperus  rotundus and Nigella sativa (black cumin) against some human pathogenic fungi isolated from different clinical cases, showed that (4) from 14 cases gave positive effect on Aspergillus fumigatus bythe frequency 16.67%
  Studying the inhibitory effect of aqueous extract against the isolated fungi, showed that aqueous extract of black sead at conc. 30 mg/ml was the best one, which inhibited the growth of A. fumigatus by 87.5%.
     Alcoholic extracts of black cumin (10 mg/ml), spearmint (15 mg/ml)and horsemint (30 mg/ml) were more effective against A. fumigatus, and inhibited the growth of A.fumigatus completely. Testing some chemical antifungals against the isolated fungus showed that ketoconazole at concentration (3.5 , 3.0 , 2.5 mg/ml) inhibited the growth by the ratio of 100%, 93.0% and 90. 0 % respectively.

Comparison of Methods for Detection of Chlamydia trachomatis in Cervical from Women in Mosul City

Modruka M.H. Al-Jammally; Hiyam A. I. Al-Taii

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 121-134
DOI: 10.33899/edusj.2020.164367

The study included detection of Chlamydia trachomatis in the cervix of symptomatic and a symptomatic woman.
A total of (60) woman aged between (16-<45) years were diagnosed by the consultant of the general hospital in Mosul city during the period May until the end of December 2013.
Three  endocervical  swabs were collected from each woman. One of the three swabs was stained with Giemsa stain for direct examination by light microscope, and the other swabs was put in 0.2M sucrose phosphates transport media then inoculated in yolk Sac of embryonated chicken eggs, and the last endocervical swabs was used for detection of chlamydia by using rapid immunochromatographic card test . From each woman participated in this study 5 ml of venous blood was collected to detect the immunoglobulin (IgG) by ELISA and indirect microimmuno flourescence test.
The result showed that C.trachomatis was presented in percentage (35%) by Indirect microimmunoflourescence test (30%) by ELISA (25%) by culturing (21.6) by Giemsa stain, , (5%) by rapid test  in symptomatic and asymptomatic women.
 This result showd that Indirect MicroimmunoaFlourecence is more specific to detect  Chlamydia than other test while the rapid test was of no value in detection of chlamydia in endocervical swabs
Also the result showed that the percentage of Chlamydia in a asymptomatic woman such as  infertility and abortion  had high percentage than symptomatic woman  such as vaginal discharge, abdominal pain' and ectopic pregnancy . Also the result showed that the isolation rate in age group (21-30) years was the more dominate than other age group.

Qualitative assessment of water of the Al-Khazer river between Mosul and Erbil city

Eman Sami Y. Al-Sarraj

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 135-148
DOI: 10.33899/edusj.2020.164368

This paper discusses the results of a study carried out from the period of December 2017 to April 2018, on assessing water quality of Al-Khazer river between Mosul and Erbil City. Al-Khazer river is considered as one of the tributaries of Al-Zab river that flow into the Tigris river. Three locations were chosen in order to evaluate its suitability, as resources of raw water, for human, industrial and agricultural uses. The spectral methods have been used to assign some of the physiochemical parameters, which include Water temperature, Turbidity, Electrical conductivity, pH, Dissolved oxygen, Total hardness, Chloride, Sulfate, Nitrate and Orthophosphate. Results showed that all  values were within permissible limits and the water of Al-Khazer river were hardened water and suitable for drinking, irrigation, swimming as well as different uses for agriculture and industry.

Effect of Aromatase Inhibitor ,Sage And Flaxseed on Spermatogenesis In Rat

Heba mohammed jasem; Fadwa khalid tawfeek

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 149-162
DOI: 10.33899/edusj.2020.164369

The study was designed to investigate estrogen effect on testis, accessory sex glands  and sex hormones in male rats from weaning age at 21 days by using aromatase inhibitor letrozole ( 1 mg ̷ kg b. w. ) orally till 90 days of age and investigate Phytoestrogens effect ( sage extract Salvia Officinalis ) (1000 mg ̷ kg b.w.) orally and flaxseed (25 gm ̷ 100 gm diet ) with diet till 90 days of age . Study groups include : Group one control. Group two treated with letrozole and caused a significant decrease in body and testis weights, sperm number (zero sperms), serum estrogen hormone and luteinizing hormone concentration, and significant increase in serum follicule stimulating hormone concentration. Group three treated with flaxseed and caused significant decrease in body and prostate weight, live sperm percentage, sperms number and significant increase in the dead sperm percentage and serum lutinizing hormone concentration. Group four treated with sage extract and caused significant decrease in the body and prostate weight, sperms number. Group five Treated with letrozole and flaxseed caused significant decrease in seminal vesicle weight, serum testosterone and follicular stimulating hormone concentration and significant increase in the sperms number, live sperm percentage. Sixth group treated with letrozole and sage extract and caused significant increase in sperms number and life sperm percentage, serum estrogen hormone concentration and significant decrease in serum testosterone hormone concentration. It was concluded that inhibition and reduction of estrogen hormone concentration in male rats by treatment with aromatase inhibitor letrozole produced negative effects by decreasing the body and testes weight, live sperm percentage, sperms count, concentration of estrogen hormone while administration of flaxseed and sage extract produced positive effects in reproductive efficiency through the increase in the percentage of live sperm, estrogen and luteinizing hormone concentrations and spermatogenesis in adult rats.
We concluded from the study the important role of estrogen hormone in reproductive function of male rats which cleared by the negative effects that resulted from lowering estrogen hormone level by using aromatase inhibitor letrozole and the administration of flaxseed and sage extract improved some effects produced by estrogen hormone deficiency. 

Comprehensive study of head lice infestation in Mosul primary schools (right and left side)

Khalida Abdulla Sulaiman; Aulfat Tahseen Yaseen; Zena Zakarya Edrees

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 163-173
DOI: 10.33899/edusj.2019.125926.1010

The current study of head lice Pediculus humanus capiti, was conducted in 11 primary schools for girls in different social and economic areas of the city of Mosul on its right and left sides for the period from 15 October 2018 to 15 February 2019. The present study showed that the total incidence of head lice in the 5 schools covered by the right city was 27.44% while the total injury rate in the 6 schools covered by the left city side was 11.13%, the highest percentage of girls with long hair was recorded in the first Zubaidah school on the left side and reached 75% , and Al- Bashair school in the right side where it reached 83.33%, while the highest percentage of girls with short hair in the school of Genin in the left side at 75% and on the right side Al-Sajideen and Al-Shaheed Salem schools as the proportion with short hair in which 33.5 and 33.33% respectively. As for the educational level of mothers of infected girls, the highest rate of infection for mothers of non-educated mothers in the school of Al-Jahafil on the left side of the city, reaching 100%, while the school Al-Bashair recorded 96% on the right side of the city. In addition, the percentage of casualties according to the number of family members was the highest rate of injury to families with fewer than 5 members of the school in Al-Foratain school on the left side of the city with 65%

Providing A Secure Environment For E-Commerce Sites Using SSL Technology

Maha A . Sayal

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 174-191
DOI: 10.33899/edusj.2020.164371

      The issue of security on the Internet is at the top of the interest for most users, especially those who want to buy online and therefore find a large majority of users, especially new ones refrain from buying online and are afraid to go into such an experiment to complete the image and know more safety in the use of credit cards for some websites.
     In order to increase confidence in online business transactions, we have proposed a safe environment for commercial sites by installing a private server and then submitting on certificate authority for digital certificates and obtaining Secure Socket Layer SSL technology, certificate it, and adding it to the server as well as hosting sites to secure its data and renew the certificate at expiration. This allows the business website owner to host that website on the secure server so the customer information and data will be protected.

Approximate Bayesian estimation for parameters of simple linear bivariate truncated t regression model

Elham Abdulkreem Hussain; Haifa Abduljwaad Saied

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 192-205
DOI: 10.33899/edusj.2020.164372

In this paper , It is obtained to approximate estimation for  parameters of the two-tailed truncated  regression model by Lindely approach . The prior  non- informative  was used for the regression parameters matrix when the variance matrix is ​​known and the two truncated points are also known. Under the quadratic loss function, the estimates approximations of the regression parameters matrix around zero up to third order moments are obtained.

Indirect Spectrophotometric Determination of Nitrazepam by Charge Transfer Complex Formation Reaction Using p-Bromanil as π-Acceptor

Subhi M. Al-Mtaiwti

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 206-217
DOI: 10.33899/edusj.2020.164373

A sensitive spectrophotometric method for the determination of nitrazepam in pure as well as in dosage form is described. The method is based on the reaction of reduced nitrazepam (RNZ) with p-bromanil in the presence of borate buffer solution of pH9 to form a pink color charge transfer(CT) complex of maximum absorption at 340 nm. Under the optimized reaction conditions, Beer’s law correlating the absorbance with nitrazepam concentration was obeyed in the range of 0.8-9.6 μg ml-1. The molar absorptivity was 1.977×104 L mol1cm1. The limits of detection was 0.093μg ml-1. The accuracy and precision of the method were satisfactory; the average recovery was 102% and values of relative standard deviations better than 1.5 %. The stoichiometry of the reaction was studied, and the reaction mechanism was postulated. The proposed CT complex formation method was successfully applied to the determination of nitrazepam in its pharmaceutical tablet with good accuracy and precision. The results obtained by the proposed method are compared with those obtained by the official method.  

Synthesis of Some New Benzoxazepine Compounds Form Derivatives of Schiff Bases

Amena A. Ahmed; Ahmad Kh. Ahmad; Natiq G. Ahmed

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 218-232
DOI: 10.33899/edusj.2020.164374

This study involved synthesize (1,3) oxazepine. The  step 1 includes the preparation of compound (1), (5-Bromo-2-mercapto-6-(4-methoxyphenyl) pyrimidin-4(3H)-one), by the condensation of anisaldehyde and ethylbromoacetat and thiourea in EtOH. In the step2,  chalcones (2-6) have been produced. The reaction of compound (1) with  chalcones (2-6) that gives azo Michael adduct (7-11) is made in the third step. Schiff’s bases (12-16) were prepared by the reaction ketones (7-11) with 2,4-dinitroaniline. Finally preparation of new benzo [1,3] oxazepine compounds (17-21) are prepared by the reaction of phthalic anhydride with Schiff’s bases. The synthesized compounds are identified by physical (melting points, colour change) and spectral methods such as (IR, proton-nmr).

Preparation of Activated Carbon From ((Asphalt:Polymer)) Mixtures and Improving its Adsorption Properties by Thermal Fusion Carbonization and Microwave Technique

Emad A.S. Al-Hyali; Khalid A.O. AL-Memary; Homam T. S. AL-Sayd Toohi AL-Sayd Toohi

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 233-241
DOI: 10.33899/edusj.2020.164375

Asphalt was modified by several methods including catalyzed treatment with a number of recycled polymers aiming at changing their chemical composition in order to be suitable for producing activated carbon, which is of great importance that is due to its uses in industing and in pollution control.
     The best model in terms of asphaltene content was used in the preparation of activated carbon using excess amount of potassium hydroxide after atmospheric and vacuum distillation; complementing carbonization is then carried out. The selected activated carbon models were purified, and the activation process is finally achieved by employing microwave technique.
     The properties of the synthesized models were tested by determining the adsorption capacity of iodine and methylene blue from aqueous media, the density, ash content and humidity. It is noticed that the chemical structure of the starting material and the use of both thermal fusion  carbonization and the activation by microwave technique have great influences on the physical properties of synthesized carbon.

A High Speed Networks Applications and Requirements

Younis S. Younis

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 242-252
DOI: 10.33899/edusj.2020.164376

All areas of business and governmental organizations are currently dependent on information technology (IT) to meet business objectives of improving network service and maximizing limited resources.
In this paper the main problems that’s represented by  using the information network to transfer information such as text, image and video files, conversations or direct video lectures, periods of use that can cause bottlenecks and network downtime, in addition to the large number of users of the network and the causes of these problems.
The main objective of this paper is to find out what methods or means to overcome the problems that guide us in terms of optimal use of resources and components even if it is limited, and to determine which technologies are best  depending on the typically, quality, importance and confidentiality of the information and the periods of arrival of the information to be transferred. The information is based on the type of networks adopted if they are localized on a given building or the scope of a city or a wide range to include a country or continent and so on.

A Survey Study on Relation Extraction for Web Pages

Ghada A.K. Alsaigh; Ghayda A.A. Al-Talib; Alaa Y. Taqa

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 253-265
DOI: 10.33899/edusj.2020.164377

Natural language means a language that is used for communication by human. Natural Language Processing (NLP) helps machines to understand the natural language. The natural language for the web pages consists of many semantic relations between entities. Discovering significant types of relations from the web is challenging because of its open nature.
In this paper we survey several important types of semantic relations. This paper also covers the relation extraction (RE) approaches which are divided into: supervised approach, which contains Feature base and Kernel base, and the unsupervised approach. Three relation extraction algorithms are discussed: Support Vector Machine (SVM), Genetic algorithm and Naive Bayes classifier
This survey would be useful for three kinds of readers First the Newcomers in the field who want to quickly learn about relation extraction. Second the researchers who want to know how the various relation extraction techniques developed over time. Third the trainers who just need to know which RE technique works best in different settings

Digital Video Watermarking Methods Using DCT and SVD

Meaad M. Salih; Eman F. Ahmed; Manar A. Al-Abaji

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 266-278
DOI: 10.33899/edusj.2020.164378

   In this search, two methods were used to include the watermark in the video. The first method was based on DCT (Discrete Cosine Transform), the second method was based on an algorithm SVD (Singular Value Decomposition) for the purpose of converting video to frequency domain. The process of embedding the watermark in both methods was done after the original video was divided into a set of frames, and one frame was divided into a block of 8 x 8 and the DCT on each block when using the first method and the SVD algorithm when using the second method. And then include the Bit Binary for the watermark inside the center of the cluster. Random selection of video frames and rows of watermark images has been adopted in both ways. The performance of the two methods was assessed using the experimental tests PSNR, MSE and NC.The experimental results show that both methods have achieved a good understanding and high resistance against various attacks, adopted Matlab 2013a language.

Spectrophotometric Assay of Mesalazine in Pharmaceutical Preparations Via Oxidative coupling reaction with o-cresol and sodium metaperiodate

Elham S Salih; mohammed Al-Enizzi

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 279-292
DOI: 10.33899/edusj.2020.172815

A simple, straightforward, rapid, sensitive and an accurate UV-VIS spectrophotometric method was suggested for the determination of mesalazine in bulk sample and in dosage forms. The method is relying on the oxidation of mesalazine by sodium metaperiodate followed by coupling with o-cresol in alkaline medium to form a blue indophenol dye which absorbs at 645 nm. Beer's law is obeyed in the concentration range 0.4- 12 µg/ml of the drug with good accuracy (average recovery) 101.38% and precision (RSD) is less than 3.5%. The molar absorptivity is 22435 l.mol-1.cm-1 with detection limit 0.101 µg/ml and 0.338 µg/ml as quantification limit. The recommended method is effectively applied to the determination of mesalazine in pharmaceutical dosages (tablets and capsule). The analytical results were well-matched with the standard method British pharmacopeia) and validated good accuracy and precision.

Speakers Recognition Based On Convolution

Khalil Ibrahim Alsaif; Nagham Saeed; esraa abd alsalm altoni

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 293-309
DOI: 10.33899/edusj.2020.172816

In this research, the important features of recognizing speakers' identity by extracting features of speakers voices are used. Voice is considered one of the vital factors adopted algorithm on samples of speakers' voices has been implemented by recording the voice, saving it on a file of the type wav. The voice is treated by using Hamming function to reduce error ratio. Feature of the voice samples have been extracted by taking the spectrum value of the sound signal of all the speakers. Two methods have been used (Ecledian distance and correlation factor) for comparing core of the convolution of the sample of speaker test (a training sample which is being recorded another time) and all the speakers samples who have already been saved on the data base. Applying the algorithm on different voices, ratio of error was very small while matching has increased by the increasing number of speaker. The algorithm has been implemented using mathlab.

Effect of a number of nutrients on some physiological activities of a local isolate of Scenedesmus sp.

Bushra Esam Kamil

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 310-324
DOI: 10.33899/edusj.2020.174640

In the present study, an isolate of the alga Scenedesmus sp.  was obtained from local environment in Mosul city. The effect of some nutrients (monohydrogen potassium phosphate, sodium carbonate, ferrous chloride, calcium nitrate) on growth, biomass production, chlorophyll content and protein content was studied. It was noticed that the best concentration of  monohydrogen potassium phosphate was (0.005%) which supported best growth (0.975) as an optical density, biomass (2.6 g/L), chlorophyll and protein content were (745 , 70 mg/L) respectively. The results also showed that when sodium carbonate was used at concentration (0.02%), the growth rate reached (1.40) as optical density, weight of biomass (1.0 g/L), but the highest value of chlorophyll content was (360 mg/L) when the concentration of carbon was (0.01%). The protein content reached to (180 mg/L) when the concentration of carbon was (0.03%). This study also revealed that Iron from ferric chloride at concentration (0.006%) supported best growth (1.99) as optical density, while biomass (2.4 g/L), but the highest chlorophyll content was (164 mg/L) at the concentration of ferric chloride (0.001%) and the best protein content was (154 mg/L) at (0.005%) of ferric chloride. Nitrogen as calcium nitrate at (0.13%) supported best growth rate (0.960) as optical density, value of biomass (1.5 g/L), chlorophyll content (911 mg/L), but the best protein content was (154 mg/L) when the nitrogen concentration was (0.01%) from calcium nitrate. This study also showed that final pH increased significantly from initial pH after fifteen dayes of incubation for all experiments used in this study.

A New Modified Conjugate Gradient Method and Its Global Convergence Theorem

Aseel Moayad Qasim

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 325-335
DOI: 10.33899/edusj.2020.174696

            In this article, we try to proposed a new conjugate gradient method for solving unconstrained optimization problems, we focus on conjugate gradient methods applied to the non-linear unconstrained optimization problems, the positive step size is obtained by a line search and the new scalar to the new direction for the conjugate gradient method is derived from the quadratic function and Taylor series and by using quasi newton condition and Newton direction while deriving the new formulae. We also prove that the search direction of the new conjugate gradient method satisfies the sufficient descent and all assumptions of the global convergence property are considered and proved .in order to complete the benefit of our research we should take into account studied the numerical results which are written in FORTRAN language when the objective function is compared our new algorithm with HS and PRP methods on the similar set of unconstrained optimization test problems which is very efficient and encouragement numerical results.