Pub Date : 2021-05-30DOI: 10.21608/EJCHEM.2021.72434.3601
O. S. Ahmad, Mohammed S. Al-Enizzi, Abdussamed M. A. Saeed
A simple, sensitive, accurate and cost-effective method has been described for the quantitative determination of Tetracycline hydrochloride (TCs) in bulk drug and its pharmaceutical preparations in an aqueous medium. The proposed method is based on the nucleophilic substitution reaction of 9-chloroacridine (9-CA) as a chromogenic reagent with TCs in an aqueous solution forming a colored complex. The spectrum of the product shows maximum absorption at 385 nm against the blank. The linearity range of the calibration graph was (1-28) μg.mL-1 with a limited detection value (LOD) 0.138 μg.mL-1. The results show the absence of interferences from the excipients compounds on the determination of the drug. The suggested method exhibited high reproducibility (RSD) 2.3 % with mean percentage recovery (R%) 99.95. Furthermore, the stability constant has been calculated to be 9.843×105 L.mol-1 and the reaction mechanism is proposed. A ratio of 1: 1 was found between the above drug and the reagent using Job and molar ratio methods. The accuracy and validity of the proposed method were further determined by performing a recovery experiment by the use of the standard addition method. It is found that the method does not require extraction process and it agree well standard addition method. Appli
{"title":"Using 9-Chloroacridine as A Chromogenic Reagent for The Detection of Tetracycline","authors":"O. S. Ahmad, Mohammed S. Al-Enizzi, Abdussamed M. A. Saeed","doi":"10.21608/EJCHEM.2021.72434.3601","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.72434.3601","url":null,"abstract":"A simple, sensitive, accurate and cost-effective method has been described for the quantitative determination of Tetracycline hydrochloride (TCs) in bulk drug and its pharmaceutical preparations in an aqueous medium. The proposed method is based on the nucleophilic substitution reaction of 9-chloroacridine (9-CA) as a chromogenic reagent with TCs in an aqueous solution forming a colored complex. The spectrum of the product shows maximum absorption at 385 nm against the blank. The linearity range of the calibration graph was (1-28) μg.mL-1 with a limited detection value (LOD) 0.138 μg.mL-1. The results show the absence of interferences from the excipients compounds on the determination of the drug. The suggested method exhibited high reproducibility (RSD) 2.3 % with mean percentage recovery (R%) 99.95. Furthermore, the stability constant has been calculated to be 9.843×105 L.mol-1 and the reaction mechanism is proposed. A ratio of 1: 1 was found between the above drug and the reagent using Job and molar ratio methods. The accuracy and validity of the proposed method were further determined by performing a recovery experiment by the use of the standard addition method. It is found that the method does not require extraction process and it agree well standard addition method. Appli","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84807439","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}
Pub Date : 2021-05-30DOI: 10.21608/EJCHEM.2021.71766.3583
Habib Ahmed, Z. Salama, Salah H. Salem, H. Aly, A. Nassrallah, Faten Abou-Elella, A. Aboul-Enein
Nanoparticles are the basic essential element of nanotechnology and it exhibits characteristic features based on their properties such as size, morphology and other size dependent properties. Their applications on agriculture, food and medicine are widely used nowadays. Agro-waste materials cause a global environmental problem worldwide. Maximizing the benefits of such waste material is a very important issue. The present investigation aimed to use nano-formulation techniques by using polyethylene glycol 8000 to produce nano-lycopene extracted from tomato waste (pomace) as well as evaluation the antioxidant, antimicrobial and anticancer activity of produced lycopene-NPs. The results of antioxidant activity using ABTS and DPPH assays revealed that nano-formulation of Lycopene increases the scavenging activity compared with lycopene. Also, both lycopene and lycopene-NPs showed antibacterial activity against all tested bacteria and antifungal activity against tested fungal species. MIC for lycopene and lycopene-NPs was determined. DNA damage induced by oxidative stress protection analysis indicated that lycopene-NPs has a great potential in DNA damage prevention compared to their respective controls. The MTT assay exhibited cytotoxic activity against three cancerous cell lines, MCF-7, HCT-116 and HepG2. As well as lycopene-NPs biosafety was tested against normal cell lines (BJ-1 and MCF-12F) compared to lycopene.
{"title":"Lycopene nanoparticles ameliorate the antioxidant, antimicrobial and anticancer potencies of tomato pomace.","authors":"Habib Ahmed, Z. Salama, Salah H. Salem, H. Aly, A. Nassrallah, Faten Abou-Elella, A. Aboul-Enein","doi":"10.21608/EJCHEM.2021.71766.3583","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.71766.3583","url":null,"abstract":"Nanoparticles are the basic essential element of nanotechnology and it exhibits characteristic features based on their properties such as size, morphology and other size dependent properties. Their applications on agriculture, food and medicine are widely used nowadays. Agro-waste materials cause a global environmental problem worldwide. Maximizing the benefits of such waste material is a very important issue. The present investigation aimed to use nano-formulation techniques by using polyethylene glycol 8000 to produce nano-lycopene extracted from tomato waste (pomace) as well as evaluation the antioxidant, antimicrobial and anticancer activity of produced lycopene-NPs. The results of antioxidant activity using ABTS and DPPH assays revealed that nano-formulation of Lycopene increases the scavenging activity compared with lycopene. Also, both lycopene and lycopene-NPs showed antibacterial activity against all tested bacteria and antifungal activity against tested fungal species. MIC for lycopene and lycopene-NPs was determined. DNA damage induced by oxidative stress protection analysis indicated that lycopene-NPs has a great potential in DNA damage prevention compared to their respective controls. The MTT assay exhibited cytotoxic activity against three cancerous cell lines, MCF-7, HCT-116 and HepG2. As well as lycopene-NPs biosafety was tested against normal cell lines (BJ-1 and MCF-12F) compared to lycopene.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72583228","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}
Pub Date : 2021-05-24DOI: 10.21608/EJCHEM.2021.68185.3486
S. Mahmoud, M. Emam, W. Hegazy
{"title":"Assessment of H2S Gas in Petroleum Company and Photocatalytic Degradation Using TiO2 Nanostructured Thin Films","authors":"S. Mahmoud, M. Emam, W. Hegazy","doi":"10.21608/EJCHEM.2021.68185.3486","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.68185.3486","url":null,"abstract":"","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91504040","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}
Pub Date : 2021-05-21DOI: 10.21608/EJCHEM.2021.70531.3554
Akram S. Al-Haidari, E. Al-Tamimi
{"title":"Synthesis of new 5-aryl tetrazoline and evaluation of their antifungal and antibacterial activity","authors":"Akram S. Al-Haidari, E. Al-Tamimi","doi":"10.21608/EJCHEM.2021.70531.3554","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.70531.3554","url":null,"abstract":"","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75247214","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}
Pub Date : 2021-05-19DOI: 10.21608/EJCHEM.2021.73722.3653
M. Yahia
{"title":"Permeability and selectivity of polymeric membranes based on Poly(ethylene oxide) for carbon dioxide separation.","authors":"M. Yahia","doi":"10.21608/EJCHEM.2021.73722.3653","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.73722.3653","url":null,"abstract":"","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77943134","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}
Pub Date : 2021-05-19DOI: 10.21608/EJCHEM.2021.68424.3496
Sara Mohamed, W. Mortada, Weam Abo Elmaety, M. E. Khalifa
A cloud point extraction (CPE) process was described for the separation and spectrophotometric analysis of Fe(III) in different water samples and blood as chelating agent. The complexation reaction between Fe(III) and Zincon was elaborated at pH 5.0 using acetate buffer and the complex was quantitatively recovered in a mixed micelle system composed of cethyltri methyl ammonium bromide (CTAB) and Triton X-114. This reaction was carried out at room temperature in the presence of 0.05 mol L-1 Na2SO4 as salting-out electrolyte. The linearity was up to 1000 µg L-1. The preconcentration factor was 50. The precision (as relative standard deviation) and the limit of detection were 2.5% and 3.1 µg L-1, respectively. The proposed procedure was used for the spectrophotometric detection of Fe(III) in water and blood samples and the data were statistically comparable to those achieved using ICP-OES technique.
{"title":"Preconcentration and spectrophotometric determination of Fe(III) by cloud point extraction using Zincon as complexing agent","authors":"Sara Mohamed, W. Mortada, Weam Abo Elmaety, M. E. Khalifa","doi":"10.21608/EJCHEM.2021.68424.3496","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.68424.3496","url":null,"abstract":"A cloud point extraction (CPE) process was described for the separation and spectrophotometric analysis of Fe(III) in different water samples and blood as chelating agent. The complexation reaction between Fe(III) and Zincon was elaborated at pH 5.0 using acetate buffer and the complex was quantitatively recovered in a mixed micelle system composed of cethyltri methyl ammonium bromide (CTAB) and Triton X-114. This reaction was carried out at room temperature in the presence of 0.05 mol L-1 Na2SO4 as salting-out electrolyte. The linearity was up to 1000 µg L-1. The preconcentration factor was 50. The precision (as relative standard deviation) and the limit of detection were 2.5% and 3.1 µg L-1, respectively. The proposed procedure was used for the spectrophotometric detection of Fe(III) in water and blood samples and the data were statistically comparable to those achieved using ICP-OES technique.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75868012","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}
Pub Date : 2021-05-19DOI: 10.21608/EJCHEM.2021.72756.3611
M. El‐Shafie, Z. Abo-Shanab, M. Mohammedy, N. O. Shaker, U. Kandil
Abstract In this study, asphalt binder was loaded with 5%, 10%, 15% and 20%wt of grinded mixed waste of plastics. The plastic waste comprised mainly from a mixture of PE/EPDM (60/40 wt.%), . To study the effect of these wastes on asphalt binder performance; the physical properties of asphalt binder were studied including penetration, viscosity, and softening point. The mechanical characteristics of modified asphalt binder were studied using dynamic mechanical analyzer (DMA). Two types of sweep tests were conducted on virgin and modified asphalt binder to study the effects of temperature and frequency on binder performance. Elastic recovery of modified asphalt binder was also investigated using the stress relaxation mode in DMA. In addition, the fatigue properties of modified asphalt samples were estimated from the obtained data of loss modulus and rutting factor (G*sinδ). It is observed that mixed plastic waste positively enhances the performance of asphalt binder.
{"title":"Mixed Plastic Wastes as a Promise Path to Green Roads","authors":"M. El‐Shafie, Z. Abo-Shanab, M. Mohammedy, N. O. Shaker, U. Kandil","doi":"10.21608/EJCHEM.2021.72756.3611","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.72756.3611","url":null,"abstract":"Abstract In this study, asphalt binder was loaded with 5%, 10%, 15% and 20%wt of grinded mixed waste of plastics. The plastic waste comprised mainly from a mixture of PE/EPDM (60/40 wt.%), . To study the effect of these wastes on asphalt binder performance; the physical properties of asphalt binder were studied including penetration, viscosity, and softening point. The mechanical characteristics of modified asphalt binder were studied using dynamic mechanical analyzer (DMA). Two types of sweep tests were conducted on virgin and modified asphalt binder to study the effects of temperature and frequency on binder performance. Elastic recovery of modified asphalt binder was also investigated using the stress relaxation mode in DMA. In addition, the fatigue properties of modified asphalt samples were estimated from the obtained data of loss modulus and rutting factor (G*sinδ). It is observed that mixed plastic waste positively enhances the performance of asphalt binder.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82731624","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}
Pub Date : 2021-05-17DOI: 10.21608/EJCHEM.2021.74690.3683
M. Alfa, Enas Elsayed, W. Shendy, M. El-Awady, Noura Elkafrawy
KINETIC CONTROL VERSUS MULLIGAN MOBILIZATION ON FUNCTIONAL OUTCOMES IN PATIENTS WITH LUMBAR RADICULOPATHY (Randomized Comparative Study) Abstract Objective: To investigate the effect of kinetic control retraining versus the hands on Mulligan SMWLM on functional outcomes in patients with lumbar radiculopathy. Methods: Design: Randomized Comparative Study. Setting: Outpatient, faculty of physical therapy clinic of Cairo university. Participants: Sixty subjects, suffered from chronic LBP with radiculopathy randomized equally into two groups. Intervention: The Kinetic control group, thirty subjects received kinetic control retraining plus convectional physical therapy. Mulligan group, Thirty subjects received Mulligan`s mobilization plus convectional physical therapy, (for 3setions/week, for 8weeks). Outcome measures: All patients were examined by inclinometer(for trunk range of motion), Oswestry disability index(for functional ability), pain detect questionnaire(neuropathic pain) and visual analogue scale(for pain intensity). All outcomes were measured initially at baseline and after intervention. Results: After the intervention, both groups showed significant improvement on the outcome measures with superior improvement of the kinetic control group for Oswestry Disability Index (P < 0.001, from 76.93 ± 6.87 to 14.8±2.27 and pain detect questionnaire (P < 0.001, from 34.26±1.98 to 12.66±2.16, pain intensity including visual analogue scale (P < 0.001, from 7.53±0.52 to 2.06±0.7, Lumbar ROM using Inclinometer: flexion (P < 0.001, from 55.86±3.1 to 67.93±2.21, extension (P < 0.001, from 18.13±1.72 to 25.73±1.62 and lateral flexion ROM from 19.6±1.72 to 27.06±1.87.Conclusion: Kinetic control retraining intervention gave superior effect on improving functional outcomes in patients with lumbar radiculopathy compared to Mulligan's mobilization. Keywords: Low back pain, kinetic control, mulligan concept.
{"title":"KINETIC CONTROL VERSUS MULLIGAN`S MOBILIZATION ON FUNCTIONAL OUTCOMES IN PATIENTS WITH LUMBAR RADICULOPATHY (Randomized Comparative study)","authors":"M. Alfa, Enas Elsayed, W. Shendy, M. El-Awady, Noura Elkafrawy","doi":"10.21608/EJCHEM.2021.74690.3683","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.74690.3683","url":null,"abstract":"KINETIC CONTROL VERSUS MULLIGAN MOBILIZATION ON FUNCTIONAL OUTCOMES IN PATIENTS WITH LUMBAR RADICULOPATHY (Randomized Comparative Study) Abstract Objective: To investigate the effect of kinetic control retraining versus the hands on Mulligan SMWLM on functional outcomes in patients with lumbar radiculopathy. Methods: Design: Randomized Comparative Study. Setting: Outpatient, faculty of physical therapy clinic of Cairo university. Participants: Sixty subjects, suffered from chronic LBP with radiculopathy randomized equally into two groups. Intervention: The Kinetic control group, thirty subjects received kinetic control retraining plus convectional physical therapy. Mulligan group, Thirty subjects received Mulligan`s mobilization plus convectional physical therapy, (for 3setions/week, for 8weeks). Outcome measures: All patients were examined by inclinometer(for trunk range of motion), Oswestry disability index(for functional ability), pain detect questionnaire(neuropathic pain) and visual analogue scale(for pain intensity). All outcomes were measured initially at baseline and after intervention. Results: After the intervention, both groups showed significant improvement on the outcome measures with superior improvement of the kinetic control group for Oswestry Disability Index (P < 0.001, from 76.93 ± 6.87 to 14.8±2.27 and pain detect questionnaire (P < 0.001, from 34.26±1.98 to 12.66±2.16, pain intensity including visual analogue scale (P < 0.001, from 7.53±0.52 to 2.06±0.7, Lumbar ROM using Inclinometer: flexion (P < 0.001, from 55.86±3.1 to 67.93±2.21, extension (P < 0.001, from 18.13±1.72 to 25.73±1.62 and lateral flexion ROM from 19.6±1.72 to 27.06±1.87.Conclusion: Kinetic control retraining intervention gave superior effect on improving functional outcomes in patients with lumbar radiculopathy compared to Mulligan's mobilization. Keywords: Low back pain, kinetic control, mulligan concept.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91506122","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}
Pub Date : 2021-05-17DOI: 10.21608/EJCHEM.2021.72866.3622
A. Sakran, A. Soliman, Essam N. Alatrash
This trial was conducted to investigate the effect of magnetized diluted seawater and bio fertilization on seedlings growth and chemical constituent of Dalbergia sissoo . during the two successive seasons of 2016 /2017 and 2017/2018 at the experimental farm of El-qanater El Khairia Horticultural Research Station, Egypt. Three diluted seawater at concentrations of (2000, 4000 and 5000 mg1) as well as control (Nile Water) have taken and four treatments were used namely magnetized diluted seawater alone, biofertilizer with mixtures of Cyanobacteria (algae of Anabaena sp. and Nostoc sp.), biofertilizer plus magnetized technique and the control which nonmagnetic and nonbiofertilizer. The obtained results demonstrated that different salinity levels significantly reduced increment of seedling height, stem diameter, leaf area, root length and fresh and dry biomass, whereas the high levels of 5000 mg1salinity neither the seedlings irrigated with separately saline water nor were treated with magnetization or bio fertilization survived, also salinity caused a reduction in total chlorophylls and total carbohydrates in contrast proline content increased, mineral nutrition's N, P and K % decreased whereas Na increased consequently K/ Na ratio decreased. Treatment of exposure the seedlings to magnetized diluted seawater or non-saline significantly increased all parameters of plant height, stem diameter, leaf area, root length and fresh and dry weight biomass compared to control, also bio fertilization as alone or as a mixture with magnetic device resulted in an increase in total chlorophylls , total carbohydrates in the stem, proline content in leaves and the absorption elements of N, P and K % raised while, Na+ content decreased consequently K/ Na ratio increased. Therefore, the current study cleared that seedlings of Dalbergia sissoo tolerated salinity level up to 4000 mg1 and the magnetization or bio fertilization ameliorated most of the growth parameters and enhanced the status of chemical constituents producing healthy seedlings.
{"title":"Chemical Constituents and Seedlings Growth of Dalbergia Sissoo Roxb. as Affected by Magnetic Diluted Seawater and Bio fertilization Treatments","authors":"A. Sakran, A. Soliman, Essam N. Alatrash","doi":"10.21608/EJCHEM.2021.72866.3622","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.72866.3622","url":null,"abstract":"This trial was conducted to investigate the effect of magnetized diluted seawater and bio fertilization on seedlings growth and chemical constituent of Dalbergia sissoo . during the two successive seasons of 2016 /2017 and 2017/2018 at the experimental farm of El-qanater El Khairia Horticultural Research Station, Egypt. Three diluted seawater at concentrations of (2000, 4000 and 5000 mg1) as well as control (Nile Water) have taken and four treatments were used namely magnetized diluted seawater alone, biofertilizer with mixtures of Cyanobacteria (algae of Anabaena sp. and Nostoc sp.), biofertilizer plus magnetized technique and the control which nonmagnetic and nonbiofertilizer. The obtained results demonstrated that different salinity levels significantly reduced increment of seedling height, stem diameter, leaf area, root length and fresh and dry biomass, whereas the high levels of 5000 mg1salinity neither the seedlings irrigated with separately saline water nor were treated with magnetization or bio fertilization survived, also salinity caused a reduction in total chlorophylls and total carbohydrates in contrast proline content increased, mineral nutrition's N, P and K % decreased whereas Na increased consequently K/ Na ratio decreased. Treatment of exposure the seedlings to magnetized diluted seawater or non-saline significantly increased all parameters of plant height, stem diameter, leaf area, root length and fresh and dry weight biomass compared to control, also bio fertilization as alone or as a mixture with magnetic device resulted in an increase in total chlorophylls , total carbohydrates in the stem, proline content in leaves and the absorption elements of N, P and K % raised while, Na+ content decreased consequently K/ Na ratio increased. Therefore, the current study cleared that seedlings of Dalbergia sissoo tolerated salinity level up to 4000 mg1 and the magnetization or bio fertilization ameliorated most of the growth parameters and enhanced the status of chemical constituents producing healthy seedlings.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89780212","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}
Pub Date : 2021-05-15DOI: 10.21608/EJCHEM.2021.74728.3680
R. Mohammad, Sabeeh Jassim, L. Ahmed
The carbon nanotubes (CNTs) in a zigzag (4, 0) shape before and after substituted with F, Cl, and Br atoms were used as a basic computer model depending on the Quantum Espresso package DFT process ( in the present work. This method demonstrated that the electronic structure, bandgap, total energy, FTIR spectrum, Raman spectrum, and depolarization spectrum can all being calculated. The simulated results are discovered that the increase in impurity atom size from F to Br as donor groups on nanotubes reduce the energy gaps from 0.959 eV to 0.674 eV, the ionization potentials from 6.088 eV to 5.729 eV, the electron affinities from 5.129 eV to 5.054 eV, and the firm energies from 5.609 eV to 5.392 eV. As a result, these substituted compounds have a high activity to act as a catalyst with broad absorption bands of the solar spectrum in the following order: Br+CNTs > Cl+CNTs > F+CNTs > CNT. This behavior will provide a better output for the solar cells and photovoltaic devices. The increment in HOMO, LUMO, and total energy magnitudes with increasing the impurity atom size from F to Br is given maximum changes, decreases band gaps, and elevated entropy values because of elevating in random.
{"title":"Halogens Substitution Effects on Electronic and Spectral Properties of Carbon Nanotube Molecules studying with the DFT method","authors":"R. Mohammad, Sabeeh Jassim, L. Ahmed","doi":"10.21608/EJCHEM.2021.74728.3680","DOIUrl":"https://doi.org/10.21608/EJCHEM.2021.74728.3680","url":null,"abstract":"The carbon nanotubes (CNTs) in a zigzag (4, 0) shape before and after substituted with F, Cl, and Br atoms were used as a basic computer model depending on the Quantum Espresso package DFT process ( in the present work. This method demonstrated that the electronic structure, bandgap, total energy, FTIR spectrum, Raman spectrum, and depolarization spectrum can all being calculated. The simulated results are discovered that the increase in impurity atom size from F to Br as donor groups on nanotubes reduce the energy gaps from 0.959 eV to 0.674 eV, the ionization potentials from 6.088 eV to 5.729 eV, the electron affinities from 5.129 eV to 5.054 eV, and the firm energies from 5.609 eV to 5.392 eV. As a result, these substituted compounds have a high activity to act as a catalyst with broad absorption bands of the solar spectrum in the following order: Br+CNTs > Cl+CNTs > F+CNTs > CNT. This behavior will provide a better output for the solar cells and photovoltaic devices. The increment in HOMO, LUMO, and total energy magnitudes with increasing the impurity atom size from F to Br is given maximum changes, decreases band gaps, and elevated entropy values because of elevating in random.","PeriodicalId":22429,"journal":{"name":"The Egyptian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83989187","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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