Efficient removal of La(III) from water by surface metal sequestration methodology using 5-azo-phenolate-8-hydroxyquinoline as a task designed sequestering material

Mohamed E. Mahmoud,Asmaa K. Mohamed 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-

The present work explores an efficient depositive removal process of La(III) by 5-azo-phenolate-8-hydroxyquinoline (5AP-8HQ) using surface metal sequestration methodology (SMSM). Structural characterization of La(III)-complex was confirmed by different techniques. The highest surface coverage value 1597.4 μg/cm2 was recognized using pH 6.0, 0.01 mol L−1 La(III) and 76 cm2 surface area. The depositive removal of La(III) followed the Freundlich isotherm model (R2 = 0.9972) and the values of thermodynamic parameters assured spontaneous and endothermic processes. Furthermore, among the four investigated kinetics models, pseudo-second-order model (K2 = 1.15 g/mg min) yielded the best fit to describe the removal experimental data of La(III).

A NOTE ON CERTAIN TRANSFORMATION FORMULAS RELATED TO APPELL, HORN AND KAMPÉ DE FÉRIET FUNCTIONS

Asmaa Orabi Mohammed,Medhat Ahmed Rakha,Arjun K. Rathie Korean Mathematical Society 2023 대한수학회논문집 Vol.38 No.3

In 2019, Mathur and Solanki [7, 8] obtained a few transformation formulas for Appell, Horn and the Kampé de Fériet functions. Unfortunately, some of the results are well-known and very old results in literature while others are erroneous. Thus the aim of this note is to provide the results in corrected forms and some of the results have been written in more compact form.

Impacts of Selection for Spike Length on Heat Stress Tolerance in Bread Wheat (Triticum aestivum L.)

Asmaa M. Mohamed,Mohamed K. Omara,Mahmoud A. El-Rawy,Mohamed I. Hassan 한국육종학회 2019 Plant Breeding and Biotechnology Vol.7 No.2

Two consecutive cycles of selection were imposed on five F2 populations of bread wheat. The first cycle was a divergent selection for spike length conducted in favorable environment (optimal sowing date) and the response was measured under favorable and heat stress conditions of a late sowing date. Positive responses to selection for longer spikes were obtained under favorable (13.43%) heat stress (8.66%) conditions, whereas the responses for shorter spikes were 2.24 and 5.02% in the two environments, respectively. The realized heritability of spike length was greater under favorable conditions (0.25-0.56) than under heat stress (0.18- 0.41). Concurrent positive responses to selection for longer spikes were obtained in grain yield per spike under favorable (25.35%) and heat stress (13.65%) environments. Selection for greater number of grains per spike imposed on F3 plants selected for spike length under heat stress resulted in significant responses (14.65%). Selection for greater number of grains per spike resulted in correlated responses in grain yield per spike (17.64%). The concurrent positive responses produced in spike length in F4 with selection for number of grains per spike (averaged 9.20%) was almost equal to that produced by the direct selection in F3 (8.66%), indicating that selection advance effected in F3 has been maintained in F4. High F4/F3 regression was obtained for spike length under heat stress (b = 0.85 ± 0.07), indicating high heritability. In conclusion, phenotypic selection for longer spikes under heat stress followed by a cycle of selection for number of grains per spike was capable of improving heat tolerance in wheat.

NEW SERIES IDENTITIES FOR ${\frac{1}{\Pi}}$

Awad, Mohammed M.,Mohammed, Asmaa O.,Rakha, Medhat A.,Rathie, Arjun K. Korean Mathematical Society 2017 대한수학회논문집 Vol.32 No.4

In the theory of hypergeometric and generalized hypergeometric series, classical summation theorems have been found interesting applications in obtaining various series identities for ${\Pi}$, ${\Pi}^2$ and ${\frac{1}{\Pi}}$. The aim of this research paper is to provide twelve general formulas for ${\frac{1}{\Pi}}$. On specializing the parameters, a large number of very interesting series identities for ${\frac{1}{\Pi}}$ not previously appeared in the literature have been obtained. Also, several other results for multiples of ${\Pi}$, ${\Pi}^2$, ${\frac{1}{{\Pi}^2}}$, ${\frac{1}{{\Pi}^3}}$ and ${\frac{1}{\sqrt{\Pi}}}$ have been obtained. The results are established with the help of the extensions of classical Gauss's summation theorem available in the literature.

ON AN INTERESTING EXTENSION OF KUMMER'S SECOND THEOREM WITH APPLICATIONS

Awad, Mohammed M.,Mohammed, Asmaa O.,Rakha, Medhat A.,Rathie, Arjun K. Korean Mathematical Society 2021 대한수학회논문집 Vol.36 No.1

In this research paper, an attempt has been made to provide an interesting extension of the well-known and useful Kummer's second theorem. Several applications have also been given.

Efficacy of dietary propolis and its nanoparticles on immune- response, stress indicators, and prevention of Pseudomonas aeruginosa infection in Oreochromis niloticus

Fatma M. M. Korni,Asmaa N. Mohammed,Usama K. Moawad,Nour El-Houda y. Hassan,Ahmed Farghali,Rehab K. Mahmoud 한국어병학회 2023 한국어병학회지 Vol.36 No.1

Nanotechnology seeks to improve material effectiveness to have a greater impact on medicine. The current study was performed to determine how effective dietary propolis (PR) and propolis nanoparticles (PR-NPs) were at improving immune and anti-oxidant status, lowering cortisol levels as stress indicators, and preventing Pseudomonas aeruginosa infection in O. niloticus. Histopathology was carried out. Fish (N = 516, 25 ± 2g) were fed basal diets supplemented with 1 gm PR/kg, 2 gm PR/kg, 1 gm PR-NPs/kg, 2 gm PR-NPs/kg feed and control diet for 28 days. When compared to the control, interlukin-1, IgM, complement 5, and levels of lysozyme were dramatically higher in PR and PR-NPs fed-groups. Antioxidant enzymes and glutathione levels were higher in fish fed PR and PR-NPs, but malondialdehyde levels were lower. Cortisol levels decreased in feeding groups compared to the control. When compared to O. niloticus group fed 1 gm PR/kg and the positive control, propolis nanoparticles successfully prevented P. aeruginosa infection and the mortality rate was zero. When compared to the negative control, the positive control group's histopathological findings revealed severe histopathological changes. In low and high groups fed PR-NPS, normal structures were observed as well as high concentrations of PR after being injected with P. aeruginosa. The group that was fed low concentrations of PR after being injected with P. aeruginosa showed only minor histopathological changes. Conclusion: Dietary supplementation of PR or PR-NPs may have a beneficial effect on aquaculture, with PR-NPs having a superior effect.

Prevention of Citrobacter freundii (MW279218) infection in Nile tilapia, Oreochromis niloticus using zinc oxide nanoparticles

Korni, Fatma M. M.,Moawad, Usama K.,Mohammed, Asmaa N.,Edrees, Asmaa The Korean Society of Fish Pathology 2022 한국어병학회지 Vol.35 No.1

Aquaculture development is based on the ideas of increasing production while reducing economic losses. Bacterial diseases are the leading source of fish cases. Citrobacter freundii has been linked to septicemia and mortality all over the world. In the current study, the cause of mortality in O. niloticus was C. freundii MW279218. External hemorrhages were seen on the affected fish, as well as paleness in the liver and kidney congestion. C. freundii MW279218 had a median lethal dosage of 1.5×10⁵ CFU/mL. Zinc oxide and zinc oxide nanoparticles (ZnO-NPs) were tested for their biocidal effectiveness against C. freundii MW279218. The lethal effect of ZnO-NPs for C. freundii MW279218 was 100% when compared to zinc oxide compound, and the inhibition zone width was 2.31.1mm at the highest tested concentrations (70 mg/L) compared to the lowest (35 and 45 mg/L, respectively). Fish were fed three different diets for 28 days: diet 1 (no additives), diet 2 (100 mg of ZnO-NPs/kg of feed), and diet 3 (200 mg of ZnO-NPs/kg of feed). Organs were also collected for histopathology 96 hours after injection (P<0.05). In the groups given 200 mg of ZnO-NPs, there was 10% mortality and 80% RPS. The group fed 100 mg of ZnO-NPs/kg, on the other hand, had 20% mortality and 60% RPS, compared to 50% mortality in the control positive group. Histopathological examinations demonstrated significant alterations in the control positive group and mild lesions in the hepatopancreas of the groups administered 100 mg ZnO-NPs/kg of feed. The groups fed 200 mg of ZnO-NPs/kg diet, on the other hand, showed no histological alterations. ZnO-NPs were found to be effective in the up regulation of both IL-10 and complement 5 immune-related genes.

Graphitic carbon nitride embedded Ni3(VO4)2/ZnCr2O4 Z-scheme photocatalyst for efficient degradation of p-chlorophenol and 5-fluorouracil, and genotoxic evaluation in Allium cepa

M. Swedha,Abdulrahman A. Alatar,Mohammad K. Okla,Ibrahim A. Alaraidh,Asmaa Mohebaldin,Mohammed Aufy,Lija L. Raju,Ajith M. Thomas,Mostafa A. Abdel-Maksoud,S. Sudheer Khan 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.112 No.-

Visible light photocatalysis using nano heterostructures offers an eco-friendly alternative for the removalof organic molecules. Here, we reported an enhanced photocatalytic activity of g-C3N4/Ni3(VO4)2/ZnCr2O4, a dual Z-scheme nano-heterojunction for the photocatalytic removal of p-chlorophenol (p-CP)and 5-fluorouracil (5-FU). The nano heterojunction was fabricated by a facile co-precipitation method. Initially, the fabricated nanocomposites (NCs) were characterized for Physico-chemical and optoelectronicproperties, by XRD, XPS, SEM, TEM, UV–Visible DRS, BET, PL, and EIS. The fabricated g-C3N4/Ni3(VO4)2/ZnCr2O4 has shown excellent photocatalytic activity. The complete mineralization of both p-CP and 5-FU observed after 160 and 200 min of visible light irradiation respectively. The mineralizationof p-CP and 5-FU was confirmed by total organic carbon (TOC) estimation and the percentage of removalTOC for p-CP and 5-FU was 99.25% and 98.9% respectively. The stability of the particle was confirmed bysix cycles test. The reusable efficiency of the NCs was found to be 99.7% after six consequent cycles. Thestability of the NCs was confirmed by XRD and XPS analysis of reused photocatalyst. The scavengers assayand ESR analysis confirmed the major role of OH radicals in enhanced photocatalytic activity. The degradationpathway of p-CP and 5-FU was determined by GC–MS/MS and the possible toxicity of the intermediatecompounds was determined by the ECOSAR program, which shows the non-toxic nature ofthe end product on green algae, daphnia, and fish. The toxicity of the NCs was tested against Allium cepawhich further confirm the non-toxic nature of NCs. The study suggests that fabricated g-C3N4/Ni3(VO4)2/ZnCr2O4 NCs can be utilized for environmental remediation applications.