Omar A. Soliman, Hatem M. El-Desoky, Mahmoud M. El-Rahmany, Hamada M. El-Awny
The present work deals with the field geology, petrography, geochemistry and mineralogy of Wadi Zayatit and Wadi Mikbi ultramafic-mafic intrusive complex, South Eastern Desert, Egypt. Based on the current geological maps, field observations, structural relationships, and previous works; the rocks that exposed in the study regions are dunites, peridotites, and gabbro. These rocks characterized by coarse-grained, dark greyish to whitish grey color, massive with lustric features and slightly deformed with low to moderate relief. The commonest of the accessory constituents is an oxide ore mineral of some kinds, the most frequent one is chromite, ilmenite, titano-magnetite and magnesio-ferrite. The petrographic descriptions of each rock unit of the studied layered ultramafic-mafic intrusion are recognized; dunites, serpentinized peridotites, and olivine gabbro. Petrographically, opaque minerals are found as coarse-grained, euhedral crystals dispersed throughout the mineral constituents and represented by titani-ferous magnetite and chromite. Titano-magnetite has high FeO and low TiO2. The Fe2O3 and TiO2 show increase with decrease in silica content (SiO2). These rock units have high contents of Ni (9767 ppm), Cr (7861ppm), and Co (1525 ppm). The clino-pyroxene and bulk-rock chemistry indicates strongly crystallization from orogenic hydrous tholeiitic to calc-alkaline magmatic affinity. These inferences suggest that their primary magma was derived from partial melting of a mantle wedge source that has suffered metasomatism in a subduction zone setting. Ore microscopy, XRD technique, and EDX microchemical analysis of representative mineralized samples of ultramafic-mafic intrusive complex identified chromite, ilmenite, titano-magnetite, magnesio-ferrite and clinochlore.
{"title":"Petrology, Geochemistry And Mineralogy Of Alaskan Type Ultramafic-Mafic Intrusive Complexes: A Case Study Around Mikbi-Zayatit District, South Eastern Desert, Egypt","authors":"Omar A. Soliman, Hatem M. El-Desoky, Mahmoud M. El-Rahmany, Hamada M. El-Awny","doi":"10.58675/2636-3305.1638","DOIUrl":"https://doi.org/10.58675/2636-3305.1638","url":null,"abstract":"The present work deals with the field geology, petrography, geochemistry and mineralogy of Wadi Zayatit and Wadi Mikbi ultramafic-mafic intrusive complex, South Eastern Desert, Egypt. Based on the current geological maps, field observations, structural relationships, and previous works; the rocks that exposed in the study regions are dunites, peridotites, and gabbro. These rocks characterized by coarse-grained, dark greyish to whitish grey color, massive with lustric features and slightly deformed with low to moderate relief. The commonest of the accessory constituents is an oxide ore mineral of some kinds, the most frequent one is chromite, ilmenite, titano-magnetite and magnesio-ferrite. The petrographic descriptions of each rock unit of the studied layered ultramafic-mafic intrusion are recognized; dunites, serpentinized peridotites, and olivine gabbro. Petrographically, opaque minerals are found as coarse-grained, euhedral crystals dispersed throughout the mineral constituents and represented by titani-ferous magnetite and chromite. Titano-magnetite has high FeO and low TiO2. The Fe2O3 and TiO2 show increase with decrease in silica content (SiO2). These rock units have high contents of Ni (9767 ppm), Cr (7861ppm), and Co (1525 ppm). The clino-pyroxene and bulk-rock chemistry indicates strongly crystallization from orogenic hydrous tholeiitic to calc-alkaline magmatic affinity. These inferences suggest that their primary magma was derived from partial melting of a mantle wedge source that has suffered metasomatism in a subduction zone setting. Ore microscopy, XRD technique, and EDX microchemical analysis of representative mineralized samples of ultramafic-mafic intrusive complex identified chromite, ilmenite, titano-magnetite, magnesio-ferrite and clinochlore.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373725","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}
Ehab Mohammed, Mostafa M. Elsheikh, Adham A. El-Zomrawy, Farag A. Ahmed
Ion imprinting techniques were used to produce ion imprinted polymer (IIP) particles for the selective removal of Pb2+ from aqueous environments. As the Templating monomers, acrylic acid, acrylic amine ligand, and Methylene Bisacrylamide crosslinker were chosen. The imprinted polymer was prepared by free radical polymerization. By leaching with 0.1 M HCl, the (Pb2+) ion was removed from the template. The polymer particles were characterized by IR spectroscopy, Thermal analysis and potentiometric analysis. The produced polymer was mechanically crushed into fine particles, assembled into a sensor probe, and linked to a bare HB graphite pencil electrode (GPE). The sensor has a linear dynamic range for Lead (II) ion determination of 4.5-50 ppb and provides best results at pH 4.6 under conditions of continual stirring. In a setting with many analytes, the sensor has been applied to monitor Lead (II) ions. The prepared samples showed high thermal stability with high selectivity for electrochemical detection of lead metal ions.
离子印迹技术用于制备离子印迹聚合物(IIP)颗粒，用于选择性去除水中环境中的Pb2+。模板单体选用丙烯酸、丙烯酸胺配体和亚甲基双丙烯酰胺交联剂。采用自由基聚合法制备印迹聚合物。通过0.1 M HCl浸出，(Pb2+)离子从模板中去除。通过红外光谱、热分析和电位分析对聚合物颗粒进行了表征。生产的聚合物被机械粉碎成细颗粒，组装成传感器探针，并连接到裸露的HB石墨铅笔电极(GPE)上。该传感器对铅(II)离子的线性动态范围为4.5-50 ppb，在连续搅拌条件下，pH为4.6时可提供最佳结果。在有许多分析物的环境中，该传感器已被用于监测铅(II)离子。所制备的样品对铅金属离子的电化学检测具有较高的选择性和热稳定性。
{"title":"Novel Technique In Production Of Pb (II)- Imprinted Polymers","authors":"Ehab Mohammed, Mostafa M. Elsheikh, Adham A. El-Zomrawy, Farag A. Ahmed","doi":"10.58675/2636-3305.1633","DOIUrl":"https://doi.org/10.58675/2636-3305.1633","url":null,"abstract":"Ion imprinting techniques were used to produce ion imprinted polymer (IIP) particles for the selective removal of Pb2+ from aqueous environments. As the Templating monomers, acrylic acid, acrylic amine ligand, and Methylene Bisacrylamide crosslinker were chosen. The imprinted polymer was prepared by free radical polymerization. By leaching with 0.1 M HCl, the (Pb2+) ion was removed from the template. The polymer particles were characterized by IR spectroscopy, Thermal analysis and potentiometric analysis. The produced polymer was mechanically crushed into fine particles, assembled into a sensor probe, and linked to a bare HB graphite pencil electrode (GPE). The sensor has a linear dynamic range for Lead (II) ion determination of 4.5-50 ppb and provides best results at pH 4.6 under conditions of continual stirring. In a setting with many analytes, the sensor has been applied to monitor Lead (II) ions. The prepared samples showed high thermal stability with high selectivity for electrochemical detection of lead metal ions.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373699","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}
{"title":"BAYESIAN AND NON-BAYESIAN ESTIMATION BASED ON STEP STRESS-PARTIALLY ACCELERATED LIFE TESTING FOR ODD GENERALIZED NADRAJAH HAGHIGHI EXPONENTIAL DISTRIBUTION","authors":"Sarah Mohammad Behairy, Neama Taher Al-Sayed","doi":"10.58675/2636-3305.1652","DOIUrl":"https://doi.org/10.58675/2636-3305.1652","url":null,"abstract":"","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"677 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134883048","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}
Mohamad Mohamad Elshabrawy, Ahmed Ibrahim Labena, Said Elsayed Desouky, Mohammed Gamal Barghoth, Mohamed Salah Azab
Bioremediation for wastewater using microbes that can detoxify the harmful effects of Cr-VI is concerned. Ninety-two isolates were collected from tannery effluents and screened based on their abilities to remediate hexavalent chromium using LB agar media supplemented by K2Cr2O7 as a source for Cr-VI. Out of the total isolates, 44 isolates can grow at 200 ppm of CR-VI, while 7, 6, 21, 11, and 3 isolates showed growth at concentrations of 400, 600, 800, 1000, and 1200 ppm of Cr-VI, respectively. Furthermore, determination of Cr-VI reduction efficiency for isolates was performed using 1,5-diphenylcarbazide (DPC) method, and the highest reduction efficiency (70.6%) was achieved by isolate 16R. This isolate was identified genetically based on the 16S rRNA gene with a higher similarity of 99.83% to Paenochrobactrum pullorum, and the genetic tree relationship was constructed. The optimization process was conducted to obtain the optimal reduction conditions, including contact time, pH, temperature, inoculum size, and Cr-VI concentration, using the One Factor at a Time (OFAT) method. The highest chromium reduction efficiency increased to 92.5% after optimization for the most potent isolate at pH 9, temperature 30-35°C, and inoculum size 3-4 ml after 5 days of incubation; biofilm formation was also represented. This study is the first to prove the chromium-reducing characteristic of this strain, along with its ability to form a biofilm, which strongly enhances the use of this strain in reduction and biological treatment processes in wastewater treatment contaminated with Cr-VI.
利用微生物解毒Cr-VI的有害影响对废水进行生物修复。从制革废水中收集了92株分离菌，并根据其修复六价铬的能力进行了筛选，以LB琼脂培养基补充K2Cr2O7作为Cr-VI的来源。在200 ppm CR-VI浓度下，44株菌株可以生长，而在400、600、800、1000和1200 ppm CR-VI浓度下，分别有7、6、21、11和3株菌株可以生长。采用1,5-二苯脲(DPC)法测定分离物对Cr-VI的还原效率，分离物16R的还原效率最高，为70.6%。基于16S rRNA基因对该分离株进行了遗传鉴定，与白斑Paenochrobactrum pullorum相似度高达99.83%，并构建了遗传树关系。采用OFAT (One Factor at a time)法进行优化，得到接触时间、pH、温度、接种量、Cr-VI浓度为最佳还原条件。在pH为9、温度为30 ~ 35℃、接种量为3 ~ 4 ml条件下，培养5 d后，效果最佳的菌株铬还原效率可达92.5%;生物膜的形成也有表现。本研究首次证明了该菌株的铬还原特性，以及其形成生物膜的能力，这有力地增强了该菌株在Cr-VI污染废水处理中的还原和生物处理工艺中的应用。
{"title":"Detoxification of Hexavalent Chromium Using Biofilm Forming Paenochrobactrum pullorum Isolated from Tannery Wastewater Effluents","authors":"Mohamad Mohamad Elshabrawy, Ahmed Ibrahim Labena, Said Elsayed Desouky, Mohammed Gamal Barghoth, Mohamed Salah Azab","doi":"10.58675/2636-3305.1642","DOIUrl":"https://doi.org/10.58675/2636-3305.1642","url":null,"abstract":"Bioremediation for wastewater using microbes that can detoxify the harmful effects of Cr-VI is concerned. Ninety-two isolates were collected from tannery effluents and screened based on their abilities to remediate hexavalent chromium using LB agar media supplemented by K2Cr2O7 as a source for Cr-VI. Out of the total isolates, 44 isolates can grow at 200 ppm of CR-VI, while 7, 6, 21, 11, and 3 isolates showed growth at concentrations of 400, 600, 800, 1000, and 1200 ppm of Cr-VI, respectively. Furthermore, determination of Cr-VI reduction efficiency for isolates was performed using 1,5-diphenylcarbazide (DPC) method, and the highest reduction efficiency (70.6%) was achieved by isolate 16R. This isolate was identified genetically based on the 16S rRNA gene with a higher similarity of 99.83% to Paenochrobactrum pullorum, and the genetic tree relationship was constructed. The optimization process was conducted to obtain the optimal reduction conditions, including contact time, pH, temperature, inoculum size, and Cr-VI concentration, using the One Factor at a Time (OFAT) method. The highest chromium reduction efficiency increased to 92.5% after optimization for the most potent isolate at pH 9, temperature 30-35°C, and inoculum size 3-4 ml after 5 days of incubation; biofilm formation was also represented. This study is the first to prove the chromium-reducing characteristic of this strain, along with its ability to form a biofilm, which strongly enhances the use of this strain in reduction and biological treatment processes in wastewater treatment contaminated with Cr-VI.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135007068","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}
Farid.A. Elmanakely, Gamal.S.M. Ahmed, Shimaa Abdelfattah, Ali. M. Khalaf
A total of eleven superdeformed rotational bands (SDRB’s) in the A=190 mass zone were described in the framework of a novel proposed simple phenomenological rotational formula as outcome of collective model. The proposed model contains the original pure rotation limit AI (I+1) plus perturbation term proportionate to the cubic power of the spin I. The bandhead spins and the model parameters were selected by a best fit method, utilizing a computerized search program to obtain best match between experimental and calculated transition energies. The spin propositions are mostly consistent with the findings of earlier works. The calculated gamma-ray transition energies (Eγ) over spin (EGOS) in all SDRB’s agree well with experimental data. Detailed assessment of the dynamic moments of inertia with rotational frequency is surveyed in details which proves to be quite helpful for understanding the SDRB’s properties such as identical bands (IB’s). Four pairs namely: 191Hg (SD2, SD3), 193Hg(SD3, SD4),194Hg(SD2, SD3) and 193Pb(SD3, SD4) are investigated as signature partners which exhibit △I=1 staggering effects their transition energies. We looked at this staggering by taking into account parameters that describe the variance between average transitions I+2 → I → I-2 and the I+1 → I-1 energies in its signature partner and a staggering parameter depends on the dipole transition energies connecting the two signature partners with that quadrupole transition energies. Large amplitude staggering is found. The bandhead moments of inertia of each signature partner pairs are found to be identical. Our calculations predicts the occurrence of △I = 2 staggering effects in 194Hg (SD1, SD2, SD3). This predict △I = 2 energy staggering has been inspected by computing parameter indicate the finite difference approximation to the fourth order derivative of that indicating energies. The phenomenon of IB’s is investigated for the nuclei 191Hg and 192Hg and their neighbors.
{"title":"Identification of Identical Bands and Energy Staggering Phenomena in Superdeformed Nuclei in A=190 Mass Region in the Framework of a Novel Proposed Simple Formula","authors":"Farid.A. Elmanakely, Gamal.S.M. Ahmed, Shimaa Abdelfattah, Ali. M. Khalaf","doi":"10.58675/2636-3305.1653","DOIUrl":"https://doi.org/10.58675/2636-3305.1653","url":null,"abstract":"A total of eleven superdeformed rotational bands (SDRB’s) in the A=190 mass zone were described in the framework of a novel proposed simple phenomenological rotational formula as outcome of collective model. The proposed model contains the original pure rotation limit AI (I+1) plus perturbation term proportionate to the cubic power of the spin I. The bandhead spins and the model parameters were selected by a best fit method, utilizing a computerized search program to obtain best match between experimental and calculated transition energies. The spin propositions are mostly consistent with the findings of earlier works. The calculated gamma-ray transition energies (Eγ) over spin (EGOS) in all SDRB’s agree well with experimental data. Detailed assessment of the dynamic moments of inertia with rotational frequency is surveyed in details which proves to be quite helpful for understanding the SDRB’s properties such as identical bands (IB’s). Four pairs namely: 191Hg (SD2, SD3), 193Hg(SD3, SD4),194Hg(SD2, SD3) and 193Pb(SD3, SD4) are investigated as signature partners which exhibit △I=1 staggering effects their transition energies. We looked at this staggering by taking into account parameters that describe the variance between average transitions I+2 → I → I-2 and the I+1 → I-1 energies in its signature partner and a staggering parameter depends on the dipole transition energies connecting the two signature partners with that quadrupole transition energies. Large amplitude staggering is found. The bandhead moments of inertia of each signature partner pairs are found to be identical. Our calculations predicts the occurrence of △I = 2 staggering effects in 194Hg (SD1, SD2, SD3). This predict △I = 2 energy staggering has been inspected by computing parameter indicate the finite difference approximation to the fourth order derivative of that indicating energies. The phenomenon of IB’s is investigated for the nuclei 191Hg and 192Hg and their neighbors.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135102489","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}
To evaluate the subsurface layers and geological structures for construction in one of the tourist areas in Egypt, the geoelectrical survey was used, represented by the 2D Electrical Resistivity Tomography (ERT). The geoelectrical survey includes 16 ERT profiles that have been conducted by using the Winner electrode array with twenty electrodes connected to a multi-core cable. The electrode spacing (a) varies between 4 and 6 meters to investigate a depth of around twenty meters, and the length of the ERT profiles varies from 76 to 114 meters depending on the electrode spacing difference and the field's available space. Through the geoelectric results that are confirmed by drilling of six boreholes, five geoelectric layers were identified, in addition to six faults inferred from the geoelectrical results. These faults are concentrated in the north of the research area. Shale and shaly-sand layers were among the examined geoelectric layers that were found on a small scale in the research region. Because of the major impact that these layers have on buildings, it was advised that the required engineering solutions be developed for these layers.
{"title":"Geoelectric Evaluation of Soil Foundation Utilizing Electrical Resistivity Tomography at West Gulf of Suez, Al-Ain Al Sokhna, Egypt","authors":"Mahmoud Zayed","doi":"10.58675/2636-3305.1635","DOIUrl":"https://doi.org/10.58675/2636-3305.1635","url":null,"abstract":"To evaluate the subsurface layers and geological structures for construction in one of the tourist areas in Egypt, the geoelectrical survey was used, represented by the 2D Electrical Resistivity Tomography (ERT). The geoelectrical survey includes 16 ERT profiles that have been conducted by using the Winner electrode array with twenty electrodes connected to a multi-core cable. The electrode spacing (a) varies between 4 and 6 meters to investigate a depth of around twenty meters, and the length of the ERT profiles varies from 76 to 114 meters depending on the electrode spacing difference and the field's available space. Through the geoelectric results that are confirmed by drilling of six boreholes, five geoelectric layers were identified, in addition to six faults inferred from the geoelectrical results. These faults are concentrated in the north of the research area. Shale and shaly-sand layers were among the examined geoelectric layers that were found on a small scale in the research region. Because of the major impact that these layers have on buildings, it was advised that the required engineering solutions be developed for these layers.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135007298","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}
Ahmed B. Yassen, Waleed N. Ahmed, Ahmed H. Ibrahim, Abdelaziz A. Bakry, Hany R. Dwidar
The solution of the initial-value problem of two-body gives inaccurate final state predictions for the orbital motions of artificial satellites. This is due to the presence of singularities and the poor selection of variables. In the current study, we numerically investigated the initial-value problem using the universal anomaly approach. To clarify the problem under concern, we carried out several numerical examples using a homemade software package. We considered five space missions, around the two planets Earth and Venus, which represent circular, near circular and ellipse orbits. We showed that the universal anomaly approach facilitates the numerical and analytical treatments of the two-body dynamics and works equally well for different types of orbits. Moreover, we developed a computation algorithm to handle the perturbed problem in cylindrical coordinates for the initial value problem taking into consideration the geopotential of the two planets up to the third zonal harmonic and the tesseral coefficient .
{"title":"A NUMERICAL APPROACH TO SOLVE THE INITIAL-VALUE PROBLEM OF TWO-BODY WITH UNIVERSAL VARIABLE","authors":"Ahmed B. Yassen, Waleed N. Ahmed, Ahmed H. Ibrahim, Abdelaziz A. Bakry, Hany R. Dwidar","doi":"10.58675/2636-3305.1640","DOIUrl":"https://doi.org/10.58675/2636-3305.1640","url":null,"abstract":"The solution of the initial-value problem of two-body gives inaccurate final state predictions for the orbital motions of artificial satellites. This is due to the presence of singularities and the poor selection of variables. In the current study, we numerically investigated the initial-value problem using the universal anomaly approach. To clarify the problem under concern, we carried out several numerical examples using a homemade software package. We considered five space missions, around the two planets Earth and Venus, which represent circular, near circular and ellipse orbits. We showed that the universal anomaly approach facilitates the numerical and analytical treatments of the two-body dynamics and works equally well for different types of orbits. Moreover, we developed a computation algorithm to handle the perturbed problem in cylindrical coordinates for the initial value problem taking into consideration the geopotential of the two planets up to the third zonal harmonic and the tesseral coefficient .","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373938","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}
In the present paper, we introduce a new concept of soft sets called soft $g(beta,omega)$-closed sets. Also, we study the basic properties of this new concept and we investigate the relation between soft $g(beta,omega)$-closed sets and some of the other soft sets. Finally, we introduce the concept of soft $g(beta,omega)$- continuous map and we study the relationship between the new concept and some of the other types of soft continuity.
{"title":"Soft Topological Notions Via Molodtsov Model","authors":"A.A. Nasef, A.I. Aggour, A. Fathy, S.M. Darwesh","doi":"10.58675/2636-3305.1648","DOIUrl":"https://doi.org/10.58675/2636-3305.1648","url":null,"abstract":"In the present paper, we introduce a new concept of soft sets called soft $g(beta,omega)$-closed sets. Also, we study the basic properties of this new concept and we investigate the relation between soft $g(beta,omega)$-closed sets and some of the other soft sets. Finally, we introduce the concept of soft $g(beta,omega)$- continuous map and we study the relationship between the new concept and some of the other types of soft continuity.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373719","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 aim of this work is the green synthesis of zinc oxide nanoparticles (ZnO NPs) via red onion extract. The ZnO NPs wurtzite hexagonal structure was identified through X-ray diffraction (XRD) analysis, with an average crystallite size of 8.13 nm. The capping and stabilization of ZnO NPs biosynthesis were supported by an analysis of infrared spectra (FT-IR). The absorption peak at 374 nm with an energy bandgap of 3.32 eV was discovered via UV-Vis analysis. A morphological study was done by SEM and TEM techniques, and showed that spherical ZnO NPs with diameters ranging from 2.83 to 15.35 nm had formed. Using EDS, it was possible to identify the high purity, intensity, and crystalline width of zinc and oxygen. The removal rates of methylene blue (MB) by photocatalysis and adsorption were compared utilizing ZnO NPs. Under sunlight, the photodegradation of MB 10 mg/L has been examined. It was found that maximum decolorization efficiency happened after 120 minutes and a dose of 25 mg of ZnO NPs. The adsorption capacity (qm) was calculated by the Langmuir equation to be 10.8 mg/g. The kinetic analysis suggests the pseudo-second order model was followed during MB adsorption via the NPs. The findings showed that the photocatalytic and adsorption approaches removed the dye up to 95.2 % more efficiently than in earlier research. ZnO NPs exhibited better antibacterial action against E. coli than S. aureus bacteria when compared to a common antibiotic like Ciprofloxacin.
{"title":"Green Synthesis Of Zinc Oxide Nanoparticles: Characterization, Organic Dye Degradation And Evaluation Of Their Antibacterial Activity","authors":"Mona Khamis, Gamal A. Gouda, Adham M. Nagiub","doi":"10.58675/2636-3305.1650","DOIUrl":"https://doi.org/10.58675/2636-3305.1650","url":null,"abstract":"The aim of this work is the green synthesis of zinc oxide nanoparticles (ZnO NPs) via red onion extract. The ZnO NPs wurtzite hexagonal structure was identified through X-ray diffraction (XRD) analysis, with an average crystallite size of 8.13 nm. The capping and stabilization of ZnO NPs biosynthesis were supported by an analysis of infrared spectra (FT-IR). The absorption peak at 374 nm with an energy bandgap of 3.32 eV was discovered via UV-Vis analysis. A morphological study was done by SEM and TEM techniques, and showed that spherical ZnO NPs with diameters ranging from 2.83 to 15.35 nm had formed. Using EDS, it was possible to identify the high purity, intensity, and crystalline width of zinc and oxygen. The removal rates of methylene blue (MB) by photocatalysis and adsorption were compared utilizing ZnO NPs. Under sunlight, the photodegradation of MB 10 mg/L has been examined. It was found that maximum decolorization efficiency happened after 120 minutes and a dose of 25 mg of ZnO NPs. The adsorption capacity (qm) was calculated by the Langmuir equation to be 10.8 mg/g. The kinetic analysis suggests the pseudo-second order model was followed during MB adsorption via the NPs. The findings showed that the photocatalytic and adsorption approaches removed the dye up to 95.2 % more efficiently than in earlier research. ZnO NPs exhibited better antibacterial action against E. coli than S. aureus bacteria when compared to a common antibiotic like Ciprofloxacin.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135006792","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}
Hamada Hosney Elbadawy, Zeinab Khaled Abd El-Aziz, Azza Abdel-khalek Abdel-khalek, Abdel Naser Ahmed Kobisi, Mohamed El- Badry
Chitin is the outermost layer surrounding all arthropod’s bodies as the primary protective layer against any adverse conditions. Chitinase is a group of enzymes responsible for degrading the old chitin layer. The current study was conducted under laboratory conditions to evaluate the insecticidal potentiality of chitinase filtrate extracted from Amycolatopsis orientalis A13 sp. nova actinomycete against the 3rd and 5th larval instars of the greater wax moth, Galleria mellonella. A series of aqueous concentrations have been prepared (25, 50, 100, 150, and 200 µL/g) to carry out the current bio-assay experiment. The cumulative larval death percentages were concentration-dependent, i.e., the highest larval mortality (94.68%) got detected at the highest applied concentration (200 µL/g). LC50, LC90, and LC95 values of chitinase filtrate were recorded at 57.94, 187.82, and 262.14 after 37 days of exposure time, respectively. The obtained data also revealed that the higher the applied chitinase concentration, the longer the treated larvae and pupae duration. The calculated nutritional indices (Relative growth rate (RGR), Relative consumption rate (RCR), efficiency of conversion of ingested food to body substance (ECI), efficiency of digested food conversion (ECD%), and Approximate digestibility (A.D.) showed significant variation at the LC50 value. The results showed that such laboratory trials accredited the chitinase filtrate as a promising bio-agent. However, further studies should be conducted to prove its efficacy under semi-field and field conditions.
几丁质是所有节肢动物身体的最外层，是抵御任何不利条件的主要保护层。几丁质酶是一组负责降解旧几丁质层的酶。本研究在室内条件下，研究了从东方Amycolatopsis orientalis A13 sp. nova放线菌中提取的几丁质酶滤液对大蜡蛾(Galleria mellonella) 3龄和5龄幼虫的杀虫效果。制备了一系列的水溶液浓度(25、50、100、150和200µL/g)来进行当前的生物测定实验。累积幼虫死亡率呈浓度依赖性，在最高浓度(200µL/g)时，幼虫死亡率最高，为94.68%。暴露37 d后，几丁质酶滤液LC50、LC90和LC95分别为57.94、187.82和262.14。几丁质酶浓度越高，处理后的幼虫和蛹持续时间越长。在LC50值下，计算得到的营养指标(相对生长率(RGR)、相对消耗率(RCR)、摄入食物转化为体内物质效率(ECI)、消化食物转化效率(ECD%)和近似消化率(A.D.)均有显著差异。实验结果表明，几丁质酶滤液是一种很有前途的生物制剂。但是，还需要进一步的研究来证明其在半大田和大田条件下的有效性。
{"title":"Bio-insecticidal potentiality of chitinase extracted from Amycolatopsis orientalis A13 sp. nova actinomycete against Galleria mellonella","authors":"Hamada Hosney Elbadawy, Zeinab Khaled Abd El-Aziz, Azza Abdel-khalek Abdel-khalek, Abdel Naser Ahmed Kobisi, Mohamed El- Badry","doi":"10.58675/2636-3305.1632","DOIUrl":"https://doi.org/10.58675/2636-3305.1632","url":null,"abstract":"Chitin is the outermost layer surrounding all arthropod’s bodies as the primary protective layer against any adverse conditions. Chitinase is a group of enzymes responsible for degrading the old chitin layer. The current study was conducted under laboratory conditions to evaluate the insecticidal potentiality of chitinase filtrate extracted from Amycolatopsis orientalis A13 sp. nova actinomycete against the 3rd and 5th larval instars of the greater wax moth, Galleria mellonella. A series of aqueous concentrations have been prepared (25, 50, 100, 150, and 200 µL/g) to carry out the current bio-assay experiment. The cumulative larval death percentages were concentration-dependent, i.e., the highest larval mortality (94.68%) got detected at the highest applied concentration (200 µL/g). LC50, LC90, and LC95 values of chitinase filtrate were recorded at 57.94, 187.82, and 262.14 after 37 days of exposure time, respectively. The obtained data also revealed that the higher the applied chitinase concentration, the longer the treated larvae and pupae duration. The calculated nutritional indices (Relative growth rate (RGR), Relative consumption rate (RCR), efficiency of conversion of ingested food to body substance (ECI), efficiency of digested food conversion (ECD%), and Approximate digestibility (A.D.) showed significant variation at the LC50 value. The results showed that such laboratory trials accredited the chitinase filtrate as a promising bio-agent. However, further studies should be conducted to prove its efficacy under semi-field and field conditions.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136373943","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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