In view of the developments of industrial applications, this happened in recent years and the need to use composite materials in general and polymer composite especially in the various industrial applications developed. This research deals with the study of the effect of water on some mechanical properties of polymer composite and its matrix material is unsaturated polyester (UPE) reinforced by gravel particles (different types) with particles size of (.7.121 nm) for type (Ι) and (...1.1 nm) for type (ΙI) as a fillers with different weight percentages (.., 7., 0., 1.) % to prepare polyester composites. The molding method was used to prepare polyester and its composites sheets. The mechanical properties were studied including flexural strength and Young's modulus for the samples at normal conditions (N.C). unsaturated polyester and its composite samples were immersed in water for about 0. days to find the effect of water on their flexural strength and Young's modulus after immersion (A.I). The results showed that the samples of UPE / gravels particles type ΙΙ composite gained highest values of flexural strength (...11MPa) as compared with other composites at (N.C) and showed that the samples of UPE / gravels particles type Ι composite gained highest values of Young's modulus (1111 GPa) as compared with other composites at (N.C). Finally, The results showed decrease in values of Young's modulus for all the samples after immersion (A.I) as compared with the samples at (N.C) and showed decrease in values of flexural strength for all the samples except for the composite material of UPE / gravels particles type Ι at weight percent (.., 7.) % which showed an increase in the value of flexural strength after immersion (A.I).
{"title":"Effect of Water on Some Mechanical Properties for Gravel Particles/Polyester Composites","authors":"Abbas F. Essa, Ahmed Jadah, Najlaa Jerjack","doi":"10.22401/JNUS.17.4.16","DOIUrl":"https://doi.org/10.22401/JNUS.17.4.16","url":null,"abstract":"In view of the developments of industrial applications, this happened in recent years and the need to use composite materials in general and polymer composite especially in the various industrial applications developed. This research deals with the study of the effect of water on some mechanical properties of polymer composite and its matrix material is unsaturated polyester (UPE) reinforced by gravel particles (different types) with particles size of (.7.121 nm) for type (Ι) and (...1.1 nm) for type (ΙI) as a fillers with different weight percentages (.., 7., 0., 1.) % to prepare polyester composites. The molding method was used to prepare polyester and its composites sheets. The mechanical properties were studied including flexural strength and Young's modulus for the samples at normal conditions (N.C). unsaturated polyester and its composite samples were immersed in water for about 0. days to find the effect of water on their flexural strength and Young's modulus after immersion (A.I). The results showed that the samples of UPE / gravels particles type ΙΙ composite gained highest values of flexural strength (...11MPa) as compared with other composites at (N.C) and showed that the samples of UPE / gravels particles type Ι composite gained highest values of Young's modulus (1111 GPa) as compared with other composites at (N.C). Finally, The results showed decrease in values of Young's modulus for all the samples after immersion (A.I) as compared with the samples at (N.C) and showed decrease in values of flexural strength for all the samples except for the composite material of UPE / gravels particles type Ι at weight percent (.., 7.) % which showed an increase in the value of flexural strength after immersion (A.I).","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85144381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: Williamson etherification method used to prepared ether compound from salicylaldehyde with 1,3-dibromopropane and potassium carbonate as base, this compound used with 2-amino-4-chlorophenol to prepare polyether hexadentate Schiff base ligand (HSL) by the 1:2 molar condensations. Cr 3+, Fe 3+, Co 3+ ions were reacted with HSL and characterized by 1H NMR and 13CNMR technique, infrared, electronic spectra, elemental analysis, thermal analysis, conductivity and magnetic susceptibility measurements, from results the metal ion was bonded to the HSL through the phenol oxygen, imine nitrogen and ether oxygen atoms to suggest octahedral configurations. The biological activity of HSL with its complexes have been studied.
{"title":"Polyether Hexadentate Schiff Base Ligand with Trivalent Chromium, Iron, Cobalt Ions","authors":"F. Ibrahim","doi":"10.22401/JNUS.20.4.01","DOIUrl":"https://doi.org/10.22401/JNUS.20.4.01","url":null,"abstract":"Abstract: \u0000Williamson etherification method used to prepared ether compound from salicylaldehyde with 1,3-dibromopropane and potassium carbonate as base, this compound used with 2-amino-4-chlorophenol to prepare polyether hexadentate Schiff base ligand (HSL) by the 1:2 molar condensations. Cr 3+, Fe 3+, Co 3+ ions were reacted with HSL and characterized by 1H NMR and 13CNMR technique, infrared, electronic spectra, elemental analysis, thermal analysis, conductivity and magnetic susceptibility measurements, from results the metal ion was bonded to the HSL through the phenol oxygen, imine nitrogen and ether oxygen atoms to suggest octahedral configurations. The biological activity of HSL with its complexes have been studied.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80312756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abeer K. Al-Mashhadany, S. M. Ali, Sawsan K. Thamer
Nowadays many applications require text similarity. It becomes important for comparing texts on websites.
现在许多应用程序需要文本相似度。这对于比较网站上的文本变得很重要。
{"title":"Text Similarity Based on English Morphological Analyzer Approach","authors":"Abeer K. Al-Mashhadany, S. M. Ali, Sawsan K. Thamer","doi":"10.22401/JNUS.27","DOIUrl":"https://doi.org/10.22401/JNUS.27","url":null,"abstract":"Nowadays many applications require text similarity. It becomes important for comparing texts on websites.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82227292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effective technique of γ-spectroscopy using high purity germanium detector (HPGe) has been applied to determine the specific activity of 226Ra, 232Th and 40K in essential vegetable samples collected from farms of Al-Diwaniyah governorate in the south of Iraq. The specific activity of natural radionuclides was measured in Tomato, Cucumber, Okra, Potato, Radish, Turnip, Spinach, Lettuce, Cauliflower and Onion. The results show that the highest specific activity of 226Ra, 232Th and 40K in potato product was (11.46, 9.12 and 120.54) Bq/kg, respectively. The average value of specific activity of radium, thorium and potassium in vegetable samples was (7.67, 5.75 and 98.39) Bq/kg, respectively. The results of the radiological hazards were compared with the published data and they were found to be within the safety levels.
{"title":"Natural Radioactivity Measurements in Vegetables at Al-Diwaniyah Governorate, Iraq and Evaluation of Radiological hazard","authors":"A. A. Al-Hamzawi","doi":"10.22401/JNUS.20.4.09","DOIUrl":"https://doi.org/10.22401/JNUS.20.4.09","url":null,"abstract":"The effective technique of γ-spectroscopy using high purity germanium detector (HPGe) has been applied to determine the specific activity of 226Ra, 232Th and 40K in essential vegetable samples collected from farms of Al-Diwaniyah governorate in the south of Iraq. The specific activity of natural radionuclides was measured in Tomato, Cucumber, Okra, Potato, Radish, Turnip, Spinach, Lettuce, Cauliflower and Onion. The results show that the highest specific activity of 226Ra, 232Th and 40K in potato product was (11.46, 9.12 and 120.54) Bq/kg, respectively. The average value of specific activity of radium, thorium and potassium in vegetable samples was (7.67, 5.75 and 98.39) Bq/kg, respectively. The results of the radiological hazards were compared with the published data and they were found to be within the safety levels.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86466711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Six bacterial isolate were obtained for the genus Salmonella from the central health laboratory ministry of health Baghdad. Then these isolated were identified serologically by antisera test, from statins serum Institut (SSI) using the agglutination reaction (Antigen-antibody complex). The hsp09 gene was identified for the studied isolates by specific primers for gene amplification using PCR technique to include nucleotide sequence up and down stream gene. Results of electrophoresis on agarose gel revealed that the approximate size of the gene is about 161bp.The intensity of gene expression hsp09 for Salmonella Typhimurium measured by CT when the bacterial isolate was exposed to different temperatures (09,09,00,09 and 00) oC using qRT-PCR result showed a regular increasing of gene expression with temperature, untile a maximum intensity observed at 09 oC. However the intensity at 00 oC was statistically insignificant. The impact of UV light at 029nm on gene expression for hsp09 on the Salmonella Typhimurium has been also studied and the results showed significant increase in the gene expression, compared to the normal growth temperature and to the internal positive control(Reference gene) 16sRNA.
{"title":"Gene Expression of Heat Shock Protein (hsp01) Using RT-PCR for Local Isolate of Salmonella","authors":"Md. Mohseen, Abdul Kareem A. AL-Kazazi, G. Aziz","doi":"10.22401/JNUS.17.4.20","DOIUrl":"https://doi.org/10.22401/JNUS.17.4.20","url":null,"abstract":"Six bacterial isolate were obtained for the genus Salmonella from the central health laboratory ministry of health Baghdad. Then these isolated were identified serologically by antisera test, from statins serum Institut (SSI) using the agglutination reaction (Antigen-antibody complex). The hsp09 gene was identified for the studied isolates by specific primers for gene amplification using PCR technique to include nucleotide sequence up and down stream gene. Results of electrophoresis on agarose gel revealed that the approximate size of the gene is about 161bp.The intensity of gene expression hsp09 for Salmonella Typhimurium measured by CT when the bacterial isolate was exposed to different temperatures (09,09,00,09 and 00) oC using qRT-PCR result showed a regular increasing of gene expression with temperature, untile a maximum intensity observed at 09 oC. However the intensity at 00 oC was statistically insignificant. The impact of UV light at 029nm on gene expression for hsp09 on the Salmonella Typhimurium has been also studied and the results showed significant increase in the gene expression, compared to the normal growth temperature and to the internal positive control(Reference gene) 16sRNA.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83300387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nada Abdulrahman F. Al-Easawi, Shaimaa Abdul-Kareem Abdullah Almashhadani, A. Alrekabi
The effects of water pipe (argihla) smoking on Health Related Quality of Life (HRQOL) on male population of 200 in Baghdad, Iraq was investigated. Aquestionnaire regarding health survey consisted of short form questions (SF36) was grouped into 8-scales: Physical Functioning (PF), Social Functioning (SF), Role Physical (RP). Mental Health (MH), Energy/ Vitality, Bodily Pain (BP) and General Health (GH). The survery was summarized into two main aspects: Physical Component Summary (PCS) and Mental Component Summary (MCS). Results showed that the majority of argihla smokers aged between (20-29) years old. The smoking percentage of unmarried individuals is higher than that of married ones and it’s more dominant among college education level. More than half number of argihla smokers have occupations and most of them are already smoking cigarettes. The mean score of (PCS) subscales were lower than those of non smokers at all subscales except the bodily pain score. All mean score subscale belonging to (MCS) were low for argihla smokers as compared with non smokers. Regression analysis revealed that old aged smokers with allergic and asthmatic diseases are those whom consume argihla weekly, and the employed smokers were the most important independent explanatory variable of the poorest (PCS) while the most explanatory variable of poorest (MCS) are represented by those of the college educational level, cigarette smokers, old aged whom suffering allergic and asthmatic diseases.
{"title":"Health Related Quality of Life Variation among Water Pipe (Argihla) Smokers in Baghdad, Iraq","authors":"Nada Abdulrahman F. Al-Easawi, Shaimaa Abdul-Kareem Abdullah Almashhadani, A. Alrekabi","doi":"10.22401/JNUS.17.4.17","DOIUrl":"https://doi.org/10.22401/JNUS.17.4.17","url":null,"abstract":"The effects of water pipe (argihla) smoking on Health Related Quality of Life (HRQOL) on male population of 200 in Baghdad, Iraq was investigated. Aquestionnaire regarding health survey consisted of short form questions (SF36) was grouped into 8-scales: Physical Functioning (PF), Social Functioning (SF), Role Physical (RP). Mental Health (MH), Energy/ Vitality, Bodily Pain (BP) and General Health (GH). The survery was summarized into two main aspects: Physical Component Summary (PCS) and Mental Component Summary (MCS). Results showed that the majority of argihla smokers aged between (20-29) years old. The smoking percentage of unmarried individuals is higher than that of married ones and it’s more dominant among college education level. More than half number of argihla smokers have occupations and most of them are already smoking cigarettes. The mean score of (PCS) subscales were lower than those of non smokers at all subscales except the bodily pain score. All mean score subscale belonging to (MCS) were low for argihla smokers as compared with non smokers. Regression analysis revealed that old aged smokers with allergic and asthmatic diseases are those whom consume argihla weekly, and the employed smokers were the most important independent explanatory variable of the poorest (PCS) while the most explanatory variable of poorest (MCS) are represented by those of the college educational level, cigarette smokers, old aged whom suffering allergic and asthmatic diseases.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87376166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of this paper is studying the effect of magnetic hydrodynamic (MHD) of unsteady flow with fractional Burger’s model between two oscillating parallel plates. The fractional order derivative in described in the Riemann-Liouville sense. The solutions which we obtained of the velocity field and the shear stress by using Laplace transform and Fourier transform in the expression of Mittage-Lefller function. Furthermore, the influence of the parameters on the velocity field spotlighted by means of the several graphs. [DOI: 10.22401/JNUS.20.4.13]
{"title":"Effect of Unsteady Magnetic Hydrodynamic on Oscillating Flow for Fractional Burgers’ Model","authors":"Amaal Mohi Nassief","doi":"10.22401/jnus.20.4.13","DOIUrl":"https://doi.org/10.22401/jnus.20.4.13","url":null,"abstract":"The purpose of this paper is studying the effect of magnetic hydrodynamic (MHD) of unsteady flow with fractional Burger’s model between two oscillating parallel plates. The fractional order derivative in described in the Riemann-Liouville sense. The solutions which we obtained of the velocity field and the shear stress by using Laplace transform and Fourier transform in the expression of Mittage-Lefller function. Furthermore, the influence of the parameters on the velocity field spotlighted by means of the several graphs. [DOI: 10.22401/JNUS.20.4.13]","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75051413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study aimed to evaluate in vitro the efficiency of the nano-encapsulated streptomycin within carboxymethylnanochitosan synthesized by an acid-base method on Rhabdomyosarcoma RD cell line and Leishmania tropica. Results showed that the concentrations 100 and 50 μg/ml of encapsulated streptomycin were more effective than 50 and 100 μg/ml of streptomycin alone and inhibited the growth of RD cells to 56 and 35 vs. 19.45 and 23% respectively after 24 hrs of incubation. Carboxymethylnanochitosan at a concentration of 50 μg/ml has the anticancer ability since it inhibited the growth of RD cells up to 20% in comparison with 19% for streptomycin at the same concentration. The growth inhibition of L. tropica in the presence of streptomycin, carboxymethylnanochitosan and streptomycin encapsulated within carboxymethylnanochitosan at 100 μg/ml for each was 34.4, 36 and 29.5% respectively. Carboxymethylnanochitosan is then considered the most effective inhibitor of L. tropica growth. [DOI: 10.22401/JUNS.20.4.12]
{"title":"In Vitro Evaluation of Nanochitosan Derivatives and Streptomycin on RD Cell Line and Leishmania Tropica","authors":"A. Ahmed, Muna Mohammed Khayri, M. Al-Halbosiy","doi":"10.22401/JNUS.20.4.12","DOIUrl":"https://doi.org/10.22401/JNUS.20.4.12","url":null,"abstract":"The study aimed to evaluate in vitro the efficiency of the nano-encapsulated streptomycin within carboxymethylnanochitosan synthesized by an acid-base method on Rhabdomyosarcoma RD cell line and Leishmania tropica. Results showed that the concentrations 100 and 50 μg/ml of encapsulated streptomycin were more effective than 50 and 100 μg/ml of streptomycin alone and inhibited the growth of RD cells to 56 and 35 vs. 19.45 and 23% respectively after 24 hrs of incubation. Carboxymethylnanochitosan at a concentration of 50 μg/ml has the anticancer ability since it inhibited the growth of RD cells up to 20% in comparison with 19% for streptomycin at the same concentration. The growth inhibition of L. tropica in the presence of streptomycin, carboxymethylnanochitosan and streptomycin encapsulated within carboxymethylnanochitosan at 100 μg/ml for each was 34.4, 36 and 29.5% respectively. Carboxymethylnanochitosan is then considered the most effective inhibitor of L. tropica growth. [DOI: 10.22401/JUNS.20.4.12]","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73090587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study was carried out to investigate the antimicrobial activity of water and methanol leaf extracts of Camillia sinensis against some pathogenic bacteria. Susceptibilities of S. aureus (SR1), S. aureus (SR2), S.typhimurium, E.coli, P. aeruginosa and Proteus to different antibiotics (Ampicillin, Streptomycin, Rifampicin and Neomycin) by disc diffusion test was carried out. Results revealed that S. aureus (SR1), S. aureus (SR2), P.aeruginosa, and S.typhimurium were resistant to Ampicillin and Rifampicin. E. coli was resistant to Ampicillin, Rifampicin and Neomycin while Proteus was resistant to all antibiotics used in this study. Antimicrobial activity of water and methanol leaf extracts of green tea at different concentrations (22,02,02,02 and 122) mg/ml against pathogenic bacteria was tested. Results showed that green tea water and methanol leaf extract showed inhibitory effect against pathogenic bacteria and methanol extract exhibited better antimicrobial effect against Staphylococcus aureus.
{"title":"Antimicrobial Activity of Water and Methanol Leaf Extracts of Green Tea (Camellia Sinensis) Against Some Pathogenic Bacteria","authors":"Shahlaa M. Saleh, B. Saleh, A. EnasS.Bahjat","doi":"10.22401/JNUS.17.4.21","DOIUrl":"https://doi.org/10.22401/JNUS.17.4.21","url":null,"abstract":"This study was carried out to investigate the antimicrobial activity of water and methanol leaf extracts of Camillia sinensis against some pathogenic bacteria. Susceptibilities of S. aureus (SR1), S. aureus (SR2), S.typhimurium, E.coli, P. aeruginosa and Proteus to different antibiotics (Ampicillin, Streptomycin, Rifampicin and Neomycin) by disc diffusion test was carried out. Results revealed that S. aureus (SR1), S. aureus (SR2), P.aeruginosa, and S.typhimurium were resistant to Ampicillin and Rifampicin. E. coli was resistant to Ampicillin, Rifampicin and Neomycin while Proteus was resistant to all antibiotics used in this study. Antimicrobial activity of water and methanol leaf extracts of green tea at different concentrations (22,02,02,02 and 122) mg/ml against pathogenic bacteria was tested. Results showed that green tea water and methanol leaf extract showed inhibitory effect against pathogenic bacteria and methanol extract exhibited better antimicrobial effect against Staphylococcus aureus.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90266174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The combinations of eight first–line antibiotics were investigated against S. aureus and P. aeruginosa by the evaluation of fractional inhibitory concentration (FIC) index. Ten isolates of S. aureus and ten isolates of P. aeruginosa were isolated from clinical samples and the minimum inhibitory concentration (MIC) for each antibiotic was determined. Synergistic interactions were observed in the combinations ampicillin–gentamycin, rifampicin–neomycin and rifampicin–tetracycline against both S. aureus and P. aeruginosa; and also in ciprofloxacin-tobramycin for P. aeruginosa. Other combinations were either additive or indifferent; one antagonistic interaction between chloramphinicol–erythromycin was observed. The results suggest that antibiotic combination is a potential way to achieve synergy when the causal organism is a multi-antibiotic resistance one.
{"title":"Evaluation of some Antibiotics in Combination Activity Against Isolates of Staphylococcus aureus and Pseudomonas aeruginosa","authors":"Rita N. N. Rammo","doi":"10.22401/JNUS.17.4.23","DOIUrl":"https://doi.org/10.22401/JNUS.17.4.23","url":null,"abstract":"The combinations of eight first–line antibiotics were investigated against S. aureus and P. aeruginosa by the evaluation of fractional inhibitory concentration (FIC) index. Ten isolates of S. aureus and ten isolates of P. aeruginosa were isolated from clinical samples and the minimum inhibitory concentration (MIC) for each antibiotic was determined. Synergistic interactions were observed in the combinations ampicillin–gentamycin, rifampicin–neomycin and rifampicin–tetracycline against both S. aureus and P. aeruginosa; and also in ciprofloxacin-tobramycin for P. aeruginosa. Other combinations were either additive or indifferent; one antagonistic interaction between chloramphinicol–erythromycin was observed. The results suggest that antibiotic combination is a potential way to achieve synergy when the causal organism is a multi-antibiotic resistance one.","PeriodicalId":14922,"journal":{"name":"Journal of Al-Nahrain University-Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86578151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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