Research Title: - وظيفة اللغة التبليغية في الرسالة المصرية لأبي الصلت الأندلسي: دراسة في المعاني والجماليات

Author: Omar Faris Yousif AlKafaween, Published Year: 2025

مجلة الآداب، جامعة الملك سعود, م37/ ع2

Faculty: Arts

Abstract: هدفت هذه الدراسة إلى إظهار وظيفة اللغة التبليغية في الرسالة المصرية لأبي الصلت الأندلسي، واستقصاء أبرز ما قدمته هذه اللغة من أخبار ومعلومات، ودراسة جمالياتها التي ساعدت في تمثيل المعاني وتعميقها، واعتمدت على المنهج الوصفي التحليلي، لدوره في رصد أبرز الأخبار الواردة في الرسالة وتحليل أثرها في بنية النص الكلية، مما يؤكد أن الوظيفة التبليغية من أهم وظائف لغة الرسالة، لأن النص يقوم على تقديم مجموعة من الأخبار والمعارف عن مصر وأهلها في فترة ما، فضلًا عن المنهج الفني الذي ساعد في إبراز أهم جماليات لغة الرسالة، ودورها في تمثيل المعاني، وخلصت إلى أن لغة الرسالة أدت وظيفة تبليغية إخبارية عن مصر ومَنْ فيها من أجناس بشرية، وقدمت للمتلقي معلومات عن تلك البلاد، ربما أنه لم يكن يعرفها من قبل، أو أنه يعرف بعضها فتعززت لديه، وأن نص الرسالة بُني على مجموعة من الجماليات كالوصف والتناص وفنون البديع، أسهمت في تمثيل وظيفة اللغة التبليغية، وأكدتها وأكسبت النص قيمًا فنية تجذب المتلقي نحوه وتثير انتباهه.

Keywords: أبو الصلت الأندلسي، الرسالة المصرية، الوظيفة التبليغية.

Research Title: Contact lenses contamination by Acanthamoeba spp. in Upper Egypt

Author: Faten Abdo Mohammed Hassan, Published Year: 2021

Plos one,

Faculty: Science

Abstract: Background Acanthamoeba spp. are one of the free-living amoeba that spread worldwide causing keratitis. Owing to the increase in the use of lenses, whether for medical or cosmetic purposes, the incidence of disease increases every year. Contamination of the lenses with the Acanthamoeba trophozoites or cysts may lead to eye infection and cause sight-threatening keratitis in human. We isolated Acanthamoeba spp. from new lenses, used lenses, and contact lens disinfecting solutions and identified them based on morphological characteristics and molecular test. Methods New and used lenses and contact lens disinfecting solutions were cultured on monogenic media. Light and scanning electron microscope was used to identify Acanthamoeba spp. morphological features. Genotype identification was also evaluated using PCR sequencing of 18S rRNA gene specific primer pair JDP1 and JDP2. Results A hundred samples were examined, 29 (29%) were infected with Acanthamoeba spp. That belonged to two strains of Acanthamoeba (Acanthamoeba 41 and Acanthamoeba 68). 18S rRNA of the Acanthamoeba 41 had 99.69% sequence identity to Acanthamoeba castellanii clone HDU-JUMS-2, whereas Acanthamoeba 68 had 99.74% similar pattern to that of Acanthamoeba sp. isolate T4 clone ac2t4 that are morphologically identified as Acanthamoeba polyphaga. The obtained data revealed that the isolated strains belong to T4 genotype that was evolutionarily similar to strains isolated in Iran. Conclusions Cosmetic lenses and disinfectant solutions are a major transmissible mode for infection. This genotype is common as the cause of Acanthamoeba keratitis. To avoid infection, care must be taken to clean the lenses and their preservative solutions and prevent contamination with the parasite.

Keywords: Acanthamoeba sp, Amoebic keratitis, Lenses

Research Title: Nutritional and phytochemical screening of Moringa oleifera leaf powder in aqueous and ethanol extract

Author: Faten Abdo Mohammed Hassan, Published Year: 2023

INTERNATIONAL JOURNAL OF FOOD PROPERTIES, 26

Faculty: Science

Abstract: Moringa oleifera has gained tremendous popularity in recent time due to its unlimited nutraceutical and functional properties. Present study was intended to investigate bioactive compounds present in Moringa oleifera leaf powder (MoLP). Moringa leaves were plucked, dried, ground, and were preliminarily analyzed for their proximate composition and mineral profile. Standard tests were conducted to evaluate flavonoids, alkaloids, saponins, proteins, amino acids, fats, and oils. Total phenolic content (TPC), total flavonoid content (TFC), total saponins content (TSC), total tannins content (TTC), FRAP assay, and DPPH radical scavenging property was also analyzed. Phytochemical investigation of Moringa oleifera leaf powder and its extract depicted the existence of rich bioactive compounds including amino acids, phenols, flavonoids, and saponins. The study illustrated that the phytochemicals in Moringa oleifera exhibit higher antioxidant activity against free radicals, revealing its strong nutritional worth

Keywords: M. oleifera, Nutritional, free radicals

Research Title: Harnessing the Power of a Novel Triple Chelate Complex in Fermented Probiotic Dairy Products: A Promising Solution for Combating Iron Deficiency Anemia

Author: Faten Abdo Mohammed Hassan, Published Year: 2024

ACS Omega, 9

Faculty: Science

Abstract: This study discovered and examined novel triple chelate complexes involving iron, ascorbic acid, and essential amino 8 acids (AsA-Fe-AmA triple chelate complexes) for the first time. The mechanism of complex formation was studied using FTIR 9 spectroscopy and quantum chemical modeling. The produced complexes were shown to be suitable for fortifying food items with a 10 pH of 3−7 that have not been exposed to heat treatment at temperatures over 75°C for more than 15 min. Thus, it can be said that 11 the concentration for milk fortification should be 0.005 mol/L or less. In vivo experiments in rats models revealed that the 12 synthesized complexes increased serum iron levels after a single application to reference values within 24 h of oral administration. 13 The iron level increased by 14.0 mmol/L at 2 mL dose of the complex. This fact makes it possible to consider the use of developed 14 complexes and developed fermented dairy products for the prevention of iron deficiency and iron deficiency anemia. Research on the 15 effect of discovered compounds on the physicochemical and organoleptic qualities of milk was conducted. Furthermore, iron 16 ascorbate threoninate, iron ascorbate methioninate, iron ascorbate lysinate, and iron ascorbate tryptophanate all had a beneficial 17 effect on Lacticaseibacillus rhamnosus at concentrations as low as 0.0005 mol/L, which is significant for milk fermentation. A study of 18 fermented milk products revealed that the most effective AsA-Fe-AmA triple chelate complex is iron ascorbate lysinate, which might 19 be further investigated as a viable molecule for dietary fortification in iron deficiency anemia. It was found that fortified fermented 20 milk products had a titratable acidity of 67 ± 1°T, pH of 4.38 ± 0.05, and a viscosity of 2018 ± 142 Pa·s

Keywords: Iron Deficiency Anemia, Novel Triple Chelate

Research Title: Nurses’ therapeutic nutrition knowledge: A crosssectional survey in Yemen

Author: Faten Abdo Mohammed Hassan, Published Year: 2025

Mal J Nutr, 2

Faculty: Science

Abstract: Introduction: Nutrition plays a critical role in improving the health of individualsstruggling with chronic conditions. Nurses have the potential to reduce morbidityand mortality through effective nutritional counselling and advice. This study aimedto assess level of nurses’ therapeutic nutrition knowledge and factors influencingtheir knowledge levels. Methods: A descriptive cross-sectional survey was conductedbetween December 2023 and February 2024 at two public hospitals in TaizGovernorate, Yemen, using self-administered questionnaire. A convenience sampleof 207 nurses participated in the study. The questionnaire comprised two sections:demographic data and 31 items assessing nurses’ therapeutic nutrition knowledge,divided into diabetes, obesity, and cardiovascular diseases. Results: Total scoresfor nurses’ therapeutic nutrition knowledge ranged from 2 to 23, with mean totalscore of 14.43 out of 31 (46.5%). Only 13 out of 31 items were answered correctlyby more than 50.0% of nurses, while eight items were answered incorrectly by over80.0% of nurses. Only 35.5% of nurses had satisfactory knowledge, while 64.5%had unsatisfactory knowledge. Mean scores for therapeutic nutrition knowledgeregarding diabetes, obesity, and cardiovascular diseases were 2.82 out of 5 (56.4%),4.17 out of 9 (46.3%), and 7.44 out of 17 (43.8%), respectively. Conclusion: Thefindings revealed low level of nutrition knowledge among nurses, emphasising acritical gap that must be addressed. Integrating comprehensive nutrition contentinto nursing curricula and implementing targeted education can bridge this gap.Enhancing nurses’ knowledge will improve patient outcomes and support broaderpublic health goals through more effective nutrition policies (PDF) Nurses’ therapeutic nutrition knowledge: A crosssectional survey in Yemen. Available from: https://www.researchgate.net/publication/392990410_Nurses'_therapeutic_nutrition_knowledge_A_crosssectional_survey_in_Yemen#fullTextFileContent [accessed Nov 30 2025].

Keywords: cardiovascular disease, chronic diseases, diabetes, nurses’ therapeuticnutrition knowledge, obesity

Research Title: Combating the causative agent of amoebic keratitis, Acanthamoeba castellanii, using Padina pavonica alcoholic extract: toxicokinetic and molecular docking approaches

Author: Faten Abdo Mohammed Hassan, Published Year: 2024

Scientific Reports, 14

Faculty: Science

Abstract: Natural products play a significant role in providing the current demand as antiparasitic agents, which offer an attractive approach for the discovery of novel drugs. The present study aimed to evaluate in vitro the potential impact of seaweed Padina pavonica (P. pavonica) extract in combating Acanthamoeba castellanii (A. castellanii). The phytochemical constituents of the extract were characterized by Gas chromatography–mass spectrometry. Six concentrations of the algal extract were used to evaluate its antiprotozoal activity at various incubation periods. Our results showed that the extract has significant inhibition against trophozoites and cysts viability, with complete inhibition at the high concentrations. The IC50 of P. pavonica extract was 4.56 and 4.89 µg/mL for trophozoites and cysts, respectively, at 24 h. Morphological alterations of A. castellanii trophozoites/cysts treated with the extract were assessed using inverted and scanning electron microscopes and showed severe damage features upon treatment with the extract at different concentrations. Molecular Docking of extracted compounds against Acanthamoeba cytochrome P450 monooxygenase (AcCYP51) was performed using Autodock vina1.5.6. A pharmacokinetic study using SwissADME was also conducted to investigate the potentiality of the identified bioactive compounds from Padina extract to be orally active drug candidates. In conclusion, this study highlights the in vitro amoebicidal activity of P. pavonica extract against A. castellanii adults and cysts and suggests potential AcCYP51 inhibition

Keywords: Acanthamoeba castellanii, Amoebic keratitis, Cytochrome P450 monooxygenase, Molecular docking, ADME analysis

Research Title: Antibacterial/radical scavenging activities, content, chemotaxonomy and chemical components of volatile oils of two Plectranthus amboinicus (Lour.) Spreng. (Lamiaceae), grown in Yemen

Author: KHALED HUSSEIN MOHAMMED ALMAAH, Published Year: 2017

American Journal of Essential Oils and Natural Products , Volume 5, No(2)

Faculty: Science

Abstract: Abstract Evaluate the content, identify the chemotype and analyze the chemical components of volatile oils of the cultivated Plectranthus amboinicus (CPSU) and the wild P. amboinicus (WPRR), from Yemen, were the main targets of this work. Antibacterial activity of the investigated oils were tested against four standard bacterial strains. Radical scavenging activity (RSA) of oils were estimated as well, using spectrophotometric DPPH method. Volatile oils components were achieved by IR spectroscopy and GC/MS. The presence of phenolic and alcoholic compounds within the oils components were inferred by IR analysis. GC/MS analysis of CPSU and WPRR oils showed that the dominant component of both is thymol (36.90% and 79.20% correspondingly) and indicated that the examined oils have thymol chemotype. The evaluation of the oil’s content show that the CPSU and WPRR possess 1.43% and 1.57% (v/w) oil content, respectively. Remarkable antibacterial activity and promising RSA of oils, were found to be correlated mainly to thymol and other alcoholic components. RSA results indicated that WPRR oil could be considered as a natural source of hydroxyl radical scavenger.

Keywords: Keywords: Plectranthus amboinicus, volatile oil components, antibacterial activity, radical scavenging activity, thymol

Research Title: Chemotaxonomy and Spectral Analysis (GC/MS and FT-IR) of Essential Oil Composition of Two Ocimum basilicum L. Varieties and their Morphological Characterization.

Author: KHALED HUSSEIN MOHAMMED ALMAAH, Published Year: 2017

Jordan Journal of Chemistry, Vol. 12No.3

Faculty: Science

Abstract: Abstract In this study, we evaluated the content and composition of the essential oils of two varieties of Ocimum basilicum L. grown in Yemen; var. basilicum and var. purpurascens. The quantitative variations in the relative amounts of the main components of essential oils of both varieties were determined using infrared spectroscopy (IR) and gas chromatography/mass spectrometry (GC/MS) in order to identify their chemo types. Out of all components detected, twenty-three components in the purple variety and thirty-one components in the green variety were identified. Linalool (44.37%; 46.24%), estragole (20.05%; 13.26%), trans-methyl cinnamate (15.05%; 0.45%), 1,8-cineole (9.28%; 3.28%) and epi-α-cadinol (1.38%; 3.10%) were identified as the main and common components of both purple and green varieties oils. Unusually high oil content was recorded in both studied varieties with slight variations between them. The morphological features of these varieties were described and presented to give them a definite scientific taxonomy.

Keywords: Phytochemistry; Ocimum basilicum; Essential oil composition; GC/MS; FT-IR; and Chemotaxonomy.

Research Title: Chemical Composition and Biological Activity of the Essential Oil Isolated from the Leaves of Achillea fragrantissima Growing Wild in Yemen

Author: KHALED HUSSEIN MOHAMMED ALMAAH, Published Year: 2019

Pharmacognosy Journal, Vol 11, Issue 5

Faculty: Science

Abstract: ABSTRACT Background: Yemen is diverse in its geography and rich in its natural flora. Achillea fragrantissima grown wild in Yemen is widely used in folkloric medicine. Objectives: To investigate the chemical composition, cytotoxicity, xanthine oxidase inhibitory and tyrosinase inhibitory activities of the essential oil isolated form the leaves of Achillea fragrantissima (Forssk.) Sch. Bip., growing wild in Yemen. Materials and Methods: The oil was collected after hydro distillation for 3 h,, the oil composition was analyzed by GC-MS and assayed for biological activities. Results: Artemisia ketone (49.53%), camphor (14.73%), α-bisabolol (11.20%), α-bisabolol oxide B (2.62%) were the main components of the oil. The MTT assay of the oil on two human colorectal cancer cell lines (SW480 and HCT-116) showed IC50 values of 110.1 and 134.6 µg ml⁻¹, respectively. Xanthine oxidase inhibitory and tyrosinase inhibitory activity assays were performed but exhibited only marginal activities. Conclusion: the components of the essential oil could be excellent anticancer drugs for treatment of colon cancer.

Keywords: Key words: Achillea fragrantissima, Artemisia ketone, Essential oil, Cytotoxicity, GC-MS.

Research Title: Antibacterial Activity of a Novel Oligosaccharide from Streptomyces californics against Erwinia carotovora subsp. Carotovora

Author: KHALED HUSSEIN MOHAMMED ALMAAH, Published Year: 2022

Molecules , 27

Faculty: Science

Abstract: The present study aims to characterize and predict models for antibacterial activity of a novel oligosaccharide from Streptomyces californics against Erwinia carotovora subsp. carotovora using an adaptive neuro-fuzzy inference system and an artificial neural network. The mathematical predication models were used to determine the optimal conditions to produce oligosaccharide and determine the relationship between the factors (pH, temperature, and time). The characteristics of the purified antibacterial agent were determined using ultraviolet spectroscopy (UV/Vis), infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H- and 13C-NMR), and mass spectrometry (MS). The best performances for the model were 39.45 and 35.16 recorded at epoch 1 for E. carotovora Erw5 and E. carotovora EMCC 1687, respectively. The coefficient (R2) of the training was more than 0.90. The highest antimicrobial production was recorded after 9 days at 25 °C and a pH of 6.2, at which more than 17 mm of the inhibition zone was obtained. The mass spectrum of antimicrobial agent (peak at R.T. = 3.433 of fraction 6) recorded two molecular ion peaks at m/z = 703.70 and m/z = 338.30, corresponding to molecular weights of 703.70 and 338.30 g/mol, respectively. The two molecular ion peaks matched well with the molecular formulas C29H53NO18 and C14H26O9, respectively, which were obtained from the elemental analysis result. A novel oligosaccharide from Streptomyces californics with potential activity against E. carotovora EMCC 1687 and E. carotovora Erw5 was successfully isolated, purified, and characterized.

Keywords: Keywords: antibacterial activity, optimization, oligosaccharide, Streptomyces californics