Journal of Basrah Researches (Sciences)

The corrosion inhibition effects and adsorption of 6-Chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine -7-sulfo amide 1,1-dioxid [ Hydrochlorothiazoide (HYD) drug] on aluminum 7075 in 0.1 M HCl solution at 35 and 55 °C were investigated using weight loss measurements . It was found that the inhibition efficiency increased with the increase in HYD concentration .The temperature studies revealed an increase in the corrosion rate with an increase in temperature in the absence and the presence of the inhibitor .The thermodynamic parameters Ea , Qads and Kads have been calculated . A mechanism of physical adsorption of HYD on the aluminum surface is proposed. The adsorption characteristics of inhibitor were approximated by Langmuir isotherm. The reactivity of the inhibitor was analyzed through quantum chemical calculations based on DFT methods at the B3YLP and 6-311++G (d ,p) basis se

Spin polarization has been calculated for the scattering of electrons from xenon atoms at impact energies up to 10 eV .The projectile-target interaction is represented by an optical potential used in the solution of relativistic Dirac equation . The calculations were carried out within a relativistic dirac method.Comparison with available results shows rather good agreement.

This paper is devoted to construct the Orlik-Solomon algebra of a hypersolvable -arrangement byusing the hypersolvable partition analogue. We used the hypersolvable ordering which preserves the hypersolvable structure to define the NBC-basis of the Orlik-Solomon algebra and we embedded it in the partition module as a free graded submodule. We used this ordering also to prove that a hypersolvable arrangement is quadratic if, and only if, it's fiber-type. As a generalization of a result of Jambu and Papadima, we gave the quadratic Orlik-Solomon algebra a structure isomorphic to a partition module and we used this isomorphism to produce a comparison between the Orlik-Solomon algebra and the quadratic Orlik-Solomon algebra as free modules with many applications.

The design and implementation operations of a cipher algorithm are considered an important in any cryptography work because it will be executed as a last stage to the study and analysis of the cipher characteristics like: weakness points and how we will remove it , strong points and how we will increase its power , and how to homogenize the algorithm parts(outputs of parts),so, the paper suggests that a cipher algorithm combines strong features in the block cipher and stream cipher together . In the present version ,the algorithm is composed of two Erasable Programmable Read Only Memories (EPROMs) which has 64 bits storage size ,eight Linear Feed back Shift Registers(LFSRs) which has lengths are: 37 stages ;33 stages 31 stages;29 stages;23 stages;19 stages;33 stages; and 37 stages ,16 bits shifted memory, and set of logic gates. Algorithm inputs are : blocks of plain text each block has 256 bits size , basic encryption/decryption key (has length 20 alphabetic characters) , secondary encryption/decryption key (has length 8 alphabetic characters) , and the specific initial state of EPROMs . The base process In the online(stream cipher) and offline(block cipher) applications is adding the bits of input blocks with the bits of final result of the algorithm components to produce the cipher blocks in same synchronous bits. The additional process that serve the offline applications ,as soon as a block cipher, is reordering locations of bits depend on a scheme ,for all cipher text blocks.

Presented in this paper is a high frequency DC-DC converter with output isolation and soft switching (Zero Voltage Switching (ZVS)) using an auxiliary switch and output resonant network: ZVS with proper core reset was achieved through the resonance that exists between the magnetizing inductance and the parasitic capacitance. All switches are operated at ZVS with minimum current and voltage stresses. The steady state analysis and basic design considerations are given to explain the principle of operation, using Matlab software (v.7)

The present study was designed to investigate the effect of 10, 30 and 50 gauss of magnetic fields on wound healing. Thirty adult rabbits of both sexes were used .The animals were divided into 3 groups of 10 rabbits each.3cm wound were made in all rabbits at gluteal region under effect of Xylazine hydrochloride and ketamine hydrochloride, the groups one, two and three exposed to magnetic field in dose 10,30 and 50 gauss at the site of wound for 15 minutes daily for seven days . The study showed that the static magnetic field has resulted in dryness of the edges of the wound associated with wound redness at the time of exposure then disappeared shortly after the discontinuation of the treatment. wounds remained open during the 7 days of observation period . Histopathological examination at various stages of wound healing, various parameters were investigated revealed ulcer formation, epidermal thickening, dermal fibrosis, fibroblast infiltration, inflammatory cells infiltration and scab formation. The result revealed that the formation of erosion were noticed in all treatments after the first and second week with the least effect that appeared with the dose of 50G of magnetic field. Epidermal thickening has been seen in all treatments after the first and second week of treatments and continued after the third week . When the dose of 10G of magnetic field was used while the epidermal thickening continued after the fourth week when the dose of magnetic field increased to 50G. Dermal fibrosis was seen in all doses, at all the times of the experiment, however, it was highest with the doses of 30G and 50G. on fibroblast infiltration, all treatments showed no effect. Inflammatory cells infiltration was seen with doses of 10G and 50G and after the first and second week of treatment and continued after the third week after the treatment with the dose of 10G ,the inflammatory cells infiltration was noticed and only a small change was seen in the dose of 50G at the first week. The treatment with 10G and 50G of magnetic field has resulted in the formation of scab after the first and second week of the treatment Scab formation did not appear in the group treated with a dose of 30G of magnetic field .

Diabetes mellitus is one of the most widely distributed metabolic disorders and occurs in almost all populations of the world at a variable prevalence. Diabetic patients commonly have a decreased activity of granulocytes. The aim of this study is to evaluate the activity of granulocytes and assess the effectiveness of zinc sulphate on the activity of granulocytes in diabetic patients.The study includes one-hundred and forty subjects, eighty had diabetes mellitus (forty males and forty females), and sixty healthy subjects (forty-nine males and eleven females). The activity of granulocytes was studied by the chemiluminescence technique for diabetic patients and healthy subjects.There was highly significant difference (P<0.001) in the activity of granulocytes between the healthy subjects and diabetic patients, also there was a significant difference (P<0.01) in the activity of granulocytes between males and females diabetic patients and males and females healthy subjects.We studied the influence of zinc sulphate on phagocytic activity of granulocytes of diabetic patients and healthy subjects, the study shows that the mean and SD for granulocytes activity and low concentrations of zinc sulphate (0.1, 1, 5 and 10) g/ml for diabetic patients and healthy subjects, there were no significant differences in the activity of granulocytes between the control (zinc concentration = 0) and the test sample (with zinc sulphate) at different low concentrations of zinc sulphate. The study included effect of different concentrations of zinc (0.68 mg/ml, 1.36 mg/ml, 2.05 mg/ml, 2.73 mg/ml and 3.41 mg/ml), there were significant differences (P<0.01) in the phagocytic activity of granulocytes between the control (zinc concentration = 0) and the test sample (with zinc sulphate) at different concentrations of zinc (0.68, 1.36, 2.05, 2.73 and 3.41) mg/ml for diabetic patients and healthy subjects. Also, we studied the effect of zinc sulphate on the activity of granulocytes for diabetic patients with and without recurrent infections, there were significant differences (P<0.01) in phagocytic activity of granulocytes between the control (zinc concentration = 0) and the test sample (with zinc sulphate) at different concentrations of zinc (0.68, 1.36, 2.05, 2.73 and 3.41) mg/ml for both groups of patients (with recurrent infections and without recurrent infections).Conclusion: It is concluded that there is a significant decrease in the activity of granulocytes in patients with diabetes mellitus and supplementation with zinc may benefit the activity of granulocytesin these patients.

Out of 2000 patients with candiduria , 43 patients ( 20 males and 23 females) showed significant candiduria (with about 1x103 - ≥ 1x105 cfu /ml ) and with significant pyuria. These cases were followed and mid-stream urine samples were examined by direct microscopy and by culturing on Sabouraud’s Dextrose Agar(SDA) with the antibacterial antibiotic chloramphenicol. The underlying diseases, sex and age were also recorded . Five Candida species were isolated and identified , C. albicans constituted 51% of the examined cases , followed by C. glabrata (26%), C. tropicalis and C. parapsilosis each constituted 9.3% while Candida sp. constituted 4.65%. Five cases were associated with bacterial pathogens (two with Escherichia coli, two with Pseudomonas aeruginosa and one with Streptococcus viridans). Diabetes mellitus was the most affecting factor (35%), followed by multiple antibiotic users (11.6%), renal stones, renal surgery, cancer and Foley’s catheters each constituted 9.3%. Amphotericin-B (AMP-B), Fluconazole and Ketoconazole showed good activity against Candida isolates. AMP-B showed a wider range of fungistatic levels and 80% (20/25)of the tested strains were inhibited at a concentration of 3.13 µg/ml and 100% inhibition obtained at 12.5 µg/ml. Both fluconazole and ketoconazole showed 100% inhibition at 25 µg/ml, while clotrimazole reach 100% of inhibition at 50 µg/ml. The polyene antibiotic, nystatin showed 80% inhibition at 50 µg/ml. The results of the minimal fungicidal concentration (MFC) are either the same of the minimal inhibitory concentration (MIC) results or of two to four folds or greater.

Out of 2000 patients with candiduria , 43 patients ( 20 males and 23 females) showed significant
candiduria (with about 1x103 - ≥ 1x105 cfu /ml ) and with significant pyuria. These cases were followed and
mid-stream urine samples were examined by direct microscopy and by culturing on Sabouraud’s Dextrose
Agar(SDA) with the antibacterial antibiotic chloramphenicol. The underlying diseases, sex and age were also
recorded . Five Candida species were isolated and identified , C. albicans constituted 51% of the examined
cases , followed by C. glabrata (26%), C. tropicalis and C. parapsilosis each constituted 9.3% while Candida
sp. constituted 4.65%. Five cases were associated with bacterial pathogens (two with Escherichia coli, two
with Pseudomonas aeruginosa and one with Streptococcus viridans). Diabetes mellitus was the most
affecting factor (35%), followed by multiple antibiotic users (11.6%), renal stones, renal surgery, cancer and
Foley’s catheters each constituted 9.3%. Amphotericin-B (AMP-B), Fluconazole and Ketoconazole showed
good activity against Candida isolates. AMP-B showed a wider range of fungistatic levels and 80% (20/25)of
the tested strains were inhibited at a concentration of 3.13 μg/ml and 100% inhibition obtained at 12.5 μg/ml.
Both fluconazole and ketoconazole showed 100% inhibition at 25 μg/ml, while clotrimazole reach 100% of
inhibition at 50 μg/ml. The polyene antibiotic, nystatin showed 80% inhibition at 50 μg/ml. The results of the
minimal fungicidal concentration (MFC) are either the same of the minimal inhibitory concentration (MIC)
results or of two to four folds or greater.

Four new azo compounds derived from amino pyrimidine and benzoic acid, salicylic acid, phydroxybenzoic
acid and resorcenol were prepared. The characterization of the synthesized azo dyes has
been described by IR and 1H-NMR spectroscopic techniques.

The Reaction of phenolphthalein with formaldehyde in the presence of Sodium hydroxide afforded
phenolphthalein-formaldehyde (PPF), and the structure was confirmed by FT-IR spectrum study.
The in vitro antibacterial activity of the synthesized polymer was investigated and showed remarkable
inhibition against both Escherichia Coli (Gram -) and Staphylococcus aureus (Gram +). The MIC (Minimal
Inhibitory Concentration) values were determined based on Disc Diffusion Method. Allowing the possibility
of using the polymer as water sterilizer.