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Articles 191551 - 191580 of 5154288

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Effects Of Microplastic On The Gastrointestinal Tract And Gut Microbiome Of Sprague Dawley Rats, Taher Baomar, Zahra Al-Mahrooqi, Michael J. Barry, Aziz Al-Habsi, Raeid M.M. Abed Apr 2025

Effects Of Microplastic On The Gastrointestinal Tract And Gut Microbiome Of Sprague Dawley Rats, Taher Baomar, Zahra Al-Mahrooqi, Michael J. Barry, Aziz Al-Habsi, Raeid M.M. Abed

Sultan Qaboos University Journal For Science

ABSTRACT Nowadays there is evidence that animals are exposed to microplastics (MPs) via food, however there is not much known about their effect on tissue of gastrointestinal tract and on gut microbiome. In this study, adult male rats were fed with polyethylene MPs, mixed with standard pellet food for 24 days at different concentrations ranging from 0 to 1000 μg/day. At the end of experiment, rats were euthanized and histopathological investigation using light and electron microscopy and the gut microbiome was analyzed using MiSeq 16S rRNA amplicon sequencing. Microscopic analysis revealed significant impact of MPs on the intestine, including visible …

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A Census Of Lakes In Gandaki Province Based On Remote Sensing, Anup Gurung, Bindu Malla Thakuri, Saroj Panthi, Kripa Pokhrel, Rana Bahadur B.K, Shiva Pariyar, Nischal Sedhai, Arbin Poudel, Bipin Poudel, Maheswar Dhakal Apr 2025

A Census Of Lakes In Gandaki Province Based On Remote Sensing, Anup Gurung, Bindu Malla Thakuri, Saroj Panthi, Kripa Pokhrel, Rana Bahadur B.K, Shiva Pariyar, Nischal Sedhai, Arbin Poudel, Bipin Poudel, Maheswar Dhakal

Sultan Qaboos University Journal For Science

Lakes in Nepal play a crucial role in supporting biodiversity conservation, regulating ecosystems, and providing livelihood opportunities for local communities. Many lakes in Nepal hold immense religious and cultural significance for the local community, serving as sacred pilgrimage sites and embodying spiritual entities that are integral to the traditions, beliefs, and practices of the people, making them important cultural landmarks of the country. Despite their significance and importance, lakes in Nepal have faced degradation and challenges. Due to inappropriate infrastructure development, encroachment, and anthropogenic activities, lakes are degraded in Nepal. In recent years, Gandaki Province also witnessed the degradation of …

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Cutting-Edge Approach To Targeted Therapy: Repositioning Of Old Drugs In Combination With Standard Clinical Chemotherapeutics Potentiates A Propitious Novel Targeted Therapy For Human Pancreatic Cancer, Rashelle Aldbai, Leili Baghaie, David A. Bunsick, Emilyn Aucoin, Yunfan Li, Daniella Ghokasian, Myron R.Szewczuk Apr 2025

Cutting-Edge Approach To Targeted Therapy: Repositioning Of Old Drugs In Combination With Standard Clinical Chemotherapeutics Potentiates A Propitious Novel Targeted Therapy For Human Pancreatic Cancer, Rashelle Aldbai, Leili Baghaie, David A. Bunsick, Emilyn Aucoin, Yunfan Li, Daniella Ghokasian, Myron R.Szewczuk

Sultan Qaboos University Journal For Science

Metastatic pancreatic cancer leads to a fatal outcome, with a median progression-free survival of approximately six months when utilizing the most successful combination of chemotherapeutic regimens. When drug resistance develops, it facilitates an increase in primary tumor growth and new and growing metastases. Patients inevitably and quickly succumb to their disease and die. Notably, chemotherapy has an unintended impact on the development of drug resistance through the enhancement of EMT development and the enrichment of cancer stem cells (CSC). Recent report discovered that neuraminidase-1 (Neu-1) regulates EMT induction, angiogenesis, and cellular proliferation by the activation of several receptor tyrosine kinases. …

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Preventive Effects Of Dill Oil On Potassium Bromated-Induced Oxidative Dna Damage In Garlic Root Tips, Hoda Khatab, S:20:"Associated Professor", } N/A, Samia Eissa, Nagat S. Elhaddad Apr 2025

Preventive Effects Of Dill Oil On Potassium Bromated-Induced Oxidative Dna Damage In Garlic Root Tips, Hoda Khatab, S:20:"Associated Professor", } N/A, Samia Eissa, Nagat S. Elhaddad

Sultan Qaboos University Journal For Science

In this study, the potential antimutagenic/cytoprotective effect of the oil extract (2.5µg/ml) from Anethum graveolens L. (Dill) on oxidative DNA damage was tested. The experiments were carried out to inhibit mutagenicity induced by potassium bromated (KBrO3-9g/l) in Allium assay using mitotic activities and nuclear DNA contents. Result showed a clear reduction in radical length in all KBrO3-treated groups compared to control plants. Mitotic activity, measured by mitotic index (MI) and mitotic stages, were significantly decreased in meristematic cells after KBrO3 application, The results showed that mitotic index (MI) was decreased to reach about 0.8 at 24 hrs compared with 23.9% …

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Biosystematic Studies On The Genus Crepis L. (Asteraceae: Cichorieae) In Egypt, Mona Hassan, Aamaa Olwey, Mostafa Aboulela Apr 2025

Biosystematic Studies On The Genus Crepis L. (Asteraceae: Cichorieae) In Egypt, Mona Hassan, Aamaa Olwey, Mostafa Aboulela

Sultan Qaboos University Journal For Science

The taxonomy of the genus Crepis L. in Egypt is critically discussed. The genus is represented in Egypt by seven species with four infra-specific taxa. One new record (C. aspera var. inermis (Cass.) Boiss.) is reported here for the first time for the flora of Egypt. The macro- and micro-morphological characteristics of the studied Crepis taxa, including the capitula, phyllaries, achenes, trichomes, and stomata, were investigated. Multivariate (cluster and PCA) analyses based on macro- and micro-morphological characteristics elucidate the phenetic relationships among the investigated taxa at the sectional level. A key, full descriptions, an updated nomenclature, and a revised type …

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The Continued Presence Of Antibiotic-Resistant Bacteria And Heavy Metals At One Of The World’S Most Important Green Turtles’ Nesting Location, Ras Al-Jinz Reserve, Oman, Al-Musharafi S.K, Al-Amrani S.A., Mahmoud I.Y, Al-Bahry S.N, Leduc A.O.H.C Apr 2025

The Continued Presence Of Antibiotic-Resistant Bacteria And Heavy Metals At One Of The World’S Most Important Green Turtles’ Nesting Location, Ras Al-Jinz Reserve, Oman, Al-Musharafi S.K, Al-Amrani S.A., Mahmoud I.Y, Al-Bahry S.N, Leduc A.O.H.C

Sultan Qaboos University Journal For Science

Environmental contamination of marine habitats is a global concern, especially in areas that are crucial for endangered species’ life cycles. To gain a comprehensive understanding of environmental contamination, analyzing various biotic and abiotic components of ecosystems is necessary. Situated in the Arabian Peninsula, Ras al-Jinz Reserve serves as an invaluable nesting site for green sea turtles (Chelonia mydas). There, the prevalence of antibiotic-resistant microbial strains and heavy metals was assessed by collecting samples from diverse components of this ecosystem, including sand from turtle nests, dead turtle hatchlings, fresh turtle eggs, oviductal fluids from nestling turtles, turtle carapace smears, live crabs, …

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Perception Of Nurses Toward Working At High Reliability Healthcare Organizations: The Association To Nurses' Psychological Safety And Intention To Stay, Safia Samir Darwish, Wafaa Ahmed Ali, Faten Fathy Abo Baraka Apr 2025

Perception Of Nurses Toward Working At High Reliability Healthcare Organizations: The Association To Nurses' Psychological Safety And Intention To Stay, Safia Samir Darwish, Wafaa Ahmed Ali, Faten Fathy Abo Baraka

Sultan Qaboos University Journal For Science

Background: High-reliability organizations (HROs) of healthcare are facing tough challenges to improve nurses’ psychological safety and intent to stay through maintaining organizational resources, work flexibility, environmental safety, and effectively managing stress and anxieties the nurses face in the workplace. Aim: This study aims to identify the relation between perception of working at HRO, psychological safety and intent to stay among Dar Al-Fouad Hospital nurses. Design: A correlational ex-post facto research. Setting: The study was conducted at Dar Al Fouad Hospital. Study subjects: A simple random sample of nurses who are working in Dar Al Fouad Hospital n=225. Tools: Three instruments …

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Identification Of Two Species Of The Family Sparidae For Edna Sequences Using A Representative 16srrna Reference Library For Omani Fish, Aliya Alansari, Wahida Alamri Apr 2025

Identification Of Two Species Of The Family Sparidae For Edna Sequences Using A Representative 16srrna Reference Library For Omani Fish, Aliya Alansari, Wahida Alamri

Sultan Qaboos University Journal For Science

Identification of fish species accurately is required to support efforts for conserving fishery biodiversity assessment and sustainable management. Recently, environmental DNA (eDNA) was suggested for regular monitoring of species for effective management of biodiversity. In Oman, molecular reference library representing fish species from the Omani coastline can support such potential approaches. In this communication, we used a local mtDNA-16SrRNA reference library representing Sparidae fish species from the Omani coastlines to identify two Sparidae eDNA sequences (zotu24 and zotu85, from Muscat and Dhofar, respectively) from Acanthopagrus and Diplodus genera reported by a recent eDNA study from Oman. The two species are …

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The Class I Histone Deacetylase Inhibitor As A Potent Therapeutic Target For Treating Glioblastoma And Mocetinostat As A Novel Inhibitor In The Induction Death Of Cancer Cells, Firas Hameed Khathayer Apr 2025

The Class I Histone Deacetylase Inhibitor As A Potent Therapeutic Target For Treating Glioblastoma And Mocetinostat As A Novel Inhibitor In The Induction Death Of Cancer Cells, Firas Hameed Khathayer

Sultan Qaboos University Journal For Science

Epigenetic abnormality is one of the hallmarks of glioblastoma cancer cells. Histone deacetylase (HDAC) modification has a crucial role in epigenetic abnormality, which results in the initiation and progression of glioblastoma cancer cells. The selective HDAC inhibitors are well-known epigenetic regulators and promising anti-cancer agents that target specific HDAC enzymes and inhibit the proliferation of many cancer cells. Selective HDAC inhibitors isoform provides a high efficacy as chemotherapy in inhibiting cancer confirmation compared to non-selective HDAC inhibitors. Additionally, selective HDAC inhibitors suppress Class -I HDAC1, HDAC2, HDAC3, and HDAC11. HDAC class I inhibitors induce apoptosis, differentiation, autophagic death cells, and …

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Genotoxic Response And Histological Alterations In Rat Lungs Exposed To Gasoline Generator Exhaust, Akinpelu Moronkeji, Frederick O.Akinbo Apr 2025

Genotoxic Response And Histological Alterations In Rat Lungs Exposed To Gasoline Generator Exhaust, Akinpelu Moronkeji, Frederick O.Akinbo

Sultan Qaboos University Journal For Science

The epileptic power supply in Nigeria has caused a surge in the production of energy from other sources, including gasoline generator sets. The air pollution caused by the exhaust from these engines has been implicated in a variety of metabolic disorders and diseases, including cancer. This study aims at understanding the genotoxic and histopathological effects of gasoline generator exhaust exposure on the DNA and lungs of adult male wistar rats. Forty- eight (48) adult wistar rats were divided into four categories, each with 12 rats. The control rats were not exposed to gasoline generator exhaust while the test groups were …

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Evaluation Of Hospital Wastewater Treatment Using Sewage Treatment Plant For Heavy Metals, Radionuclides, And Some Pharmaceuticals: A Case Study, Amira M.A. Al-Maqrashia, El-Said I. El-Shafey, Haider A. Al-Lawati, Abbasher M. Gismelseed, Bashayer B. Al-Mamari Apr 2025

Evaluation Of Hospital Wastewater Treatment Using Sewage Treatment Plant For Heavy Metals, Radionuclides, And Some Pharmaceuticals: A Case Study, Amira M.A. Al-Maqrashia, El-Said I. El-Shafey, Haider A. Al-Lawati, Abbasher M. Gismelseed, Bashayer B. Al-Mamari

Sultan Qaboos University Journal For Science

This is the first study in Oman to evaluate the efficiency of a sewage treatment plant (STP) for hospital wastewater (HWW) treatment for heavy metals, radionuclides, and some selected pharmaceuticals. A sewage treatment plant (STP) at Sultan Qaboos University (SQU) receives HWW, from Sultan Qaboos University Hospital (SQUH), and municipal wastewater from non-medical facilities at SQU. Representative samples of HWW (before mixing with municipal wastewater at STP), STP-treated wastewater (TWW), and STP mixing sludge, were collected and analyzed. A method for analyzing pharmaceuticals including metformin, atenolol, chlorpheniramine, triprolidine, diphenhydramine, and citalopram was developed and validated using LC-MS-MS. HWW and TWW …

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Production And Optimization Of Extracellular Α-Amylase From Halophilic Bacteria Cytobacillus Oceanisediminis Isolated From Wadi-El-Natrun, Egypt, Nada A. Hashem, Naeima M.H. Yousef Apr 2025

Production And Optimization Of Extracellular Α-Amylase From Halophilic Bacteria Cytobacillus Oceanisediminis Isolated From Wadi-El-Natrun, Egypt, Nada A. Hashem, Naeima M.H. Yousef

Sultan Qaboos University Journal For Science

The current study aimed to maximize α-amylase enzyme production by halophilic bacteria Cytobacillus oceanisediminis isolated from soil of Wadi-El-Natrun, Egypt. The results showed that of 21 halophilic bacterial isolates recovered from saline soil samples, eight isolates were high amylase producers. Interestingly, the bacterial isolate AHB6 exhibited the highest extracellular amylase production and was selected for further studies. This isolate was molecularly identified based on the 16srRNA gene sequencing as Cytobacillus oceanisediminis and has the accession number OM759999. The optimum temperature for α-amylase enzyme was 45 °C and exhibited thermostability at 45 °C for 1 h and retained more than 80% …

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Lithostratigraphy And Microfacies Of The Upper Cretaceous Muti Formation Of The Oman Foreland Basin, Nakhal Area, Oman, Jenan Ahmed Attar, Iftikhar Ahmed Abbasi, Muhammad Hanif, Mohamed A.K. El-Ghali, Abdulrazaq Al-Sayigh, Abdul Rahman Al-Harthi Apr 2025

Lithostratigraphy And Microfacies Of The Upper Cretaceous Muti Formation Of The Oman Foreland Basin, Nakhal Area, Oman, Jenan Ahmed Attar, Iftikhar Ahmed Abbasi, Muhammad Hanif, Mohamed A.K. El-Ghali, Abdulrazaq Al-Sayigh, Abdul Rahman Al-Harthi

Sultan Qaboos University Journal For Science

The Upper Cretaceous Muti Formation was deposited in the Oman Foreland Basin during the obduction of the allochthonous units on the eastern margin of the Arabian Platform. The formation is exposed in various isolated outcrops around Jabal Akhdar Mountain and is located between the Mesozoic platform carbonates below and the allochthonous nappe above. The current study is the first to describe the outcrops of the Muti Formation in the Nakhal area. It focuses on the lithofacies, microfacies distribution, and the characterization of the depositional environment of the formation. The lithofacies and microfacies of the formation are described from two measured …

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In-Situ Location Of Precious Stones Using Magnetic Data And Pseudo-Gravity Transforms In Parts Of The Nupe Basin Area Of Nigeria, Olawuyi A.K Apr 2025

In-Situ Location Of Precious Stones Using Magnetic Data And Pseudo-Gravity Transforms In Parts Of The Nupe Basin Area Of Nigeria, Olawuyi A.K

Sultan Qaboos University Journal For Science

In-situ location of precious stones from the mineral-rich zones in parts of Lafiagi (Sheet 203) and Pategi (Sheet 204) areas of Bida basin, central Nigeria was carried out. It was aimed at identification of the structures that usually host precious stones and then locating them in these areas. This work involved the qualitative and quantitative analysis of aeromagnetic data and pseudo-gravity transforms using the 3-D Euler Deconvolution subroutine of Oasis MontajTM software and the geological information obtained from reliable sources in the structural interpretation and isolation work. The geological features in the studied region have been connected to the presence …

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Preliminary Evidence For The Decline In Discharge At Falaj Daris, Nizwa, Oman, Ziyana Al-Rawahi, Paul R. Houser Apr 2025

Preliminary Evidence For The Decline In Discharge At Falaj Daris, Nizwa, Oman, Ziyana Al-Rawahi, Paul R. Houser

Sultan Qaboos University Journal For Science

Falaj Daris is one of the oldest active aflāj located in Oman and the largest in the Dakhiliyah governorate. It is a 7,999-meter long Dāwūdī-type falaj. Ninety-five percent of water drawn from falaj Daris is used for agricultural irrigation and the remaining five percent is used for domestic purposes. In this paper, we analyzed several datasets including falaj Daris discharge, borehole water levels in wadi al-Abyadh, whose aquifer falaj Daris taps, and GRACE satellite data to determine the historical trend of falaj Daris discharge during 1982-2020. A set of standard statistical methods and data visualization techniques were applied including the …

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Supercontinuum Generation By Controlling Pitch In Photonic Crystal Fibers, Mohammed Salim Jasim Al-Taie Apr 2025

Supercontinuum Generation By Controlling Pitch In Photonic Crystal Fibers, Mohammed Salim Jasim Al-Taie

Sultan Qaboos University Journal For Science

The influence of varying the distance between air holes (pitch) on the geography of solitone propagation through a photonic crystal fiber has been tested. The study depends on the Split-Step Fourier method and the results quantified using MATLAB. The first-order solitone was tested with the change in pitch, and it was found that there is a clear decay in the amplitude of the resulting pulse with an increase in pitch. When increasing the pitch in the case of second-order solitons, it was noticed that the pulse would split into multiple-order solitons down to higher-order solitons with the increase in pitch. …

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The Intended Blessed Tree In The Quran - Is It Olive Tree Or Palm Oil Tree?, Mostafa Koutb Apr 2025

The Intended Blessed Tree In The Quran - Is It Olive Tree Or Palm Oil Tree?, Mostafa Koutb

Sultan Qaboos University Journal For Science

This article aims to provide an alternative scientific interpretation for verse 35 in Surat An-Nur. This verse addresses the very famous simile in the Quran which describes the light of Allah. In this verse Allah mentioned that ꞌAllah (is the) light (of) the heavens and the earth. (The) example (of) His Light (is) like a niche in it (is) a lamp; the lamp (is) in a glass, the glass as if it were a star brilliant (which) is lit from a tree blessed - an olive, not (of the) east and not (of the) west, would almost its oil glow, …

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Impact Of Climate Change On Rare Species In Arid Environments, Hamada Ali, S:24:"Sultan Qaboos University", } N/A Apr 2025

Impact Of Climate Change On Rare Species In Arid Environments, Hamada Ali, S:24:"Sultan Qaboos University", } N/A

Sultan Qaboos University Journal For Science

Climate Change discusses the long-term metrological conditions and patterns. Besides nature, human development has drastically increased the chances of climate change by burning fossil fuels, including oil, gas, and coal. That resulted in turbulence among humans and plants, and animals. This vulnerability or changing climate dynamics has impacted the plants that are the earth's primary source of life. Egypt is one of the countries where the temperature has risen in the past decades due to climate change. In this country, the plants are affected by the vulnerability of this dynamic change of climate, especially the rare plant species. One of …

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An Efficient Sensor Based On Anodic Activation Of Graphene Oxide For Sensitive And Selective Determination Of Dopamine In Blood Serum, Emad Aldeen Khudaish, Lamiya Al Ghafri, Nusiba Al Hatmi, Salah Joudi Apr 2025

An Efficient Sensor Based On Anodic Activation Of Graphene Oxide For Sensitive And Selective Determination Of Dopamine In Blood Serum, Emad Aldeen Khudaish, Lamiya Al Ghafri, Nusiba Al Hatmi, Salah Joudi

Sultan Qaboos University Journal For Science

A native graphene oxide (NGO) prepared by Hummers modified method was used as the template materials for the fabrication of electrochemically oxidative graphene oxide (OGO) onto a glassy carbon electrode (GCE). The fabrication of OGO-GCE persuaded via anodic reversible potentiodynamic of NGO base surface materials that increases the concentration of oxygen functionalities. The development of a new aldehyde/alcoholic functional group on OGO-GCE characterized by XPS analysis is a marked signal for oxygen richness surface which provoked on the cost of sp2 hybridized function. The EIS data underline that OGO-GCE promote the electron transfer kinetics much more than NGO-GCE by 9 …

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Preparation And Characterization Of Iron Oxide Nano-Adsorbent By Enteromorpha Flexuosa Algae Obtained From Yanbu Red Sea, Saudi Arabia, Prof. Imran Ali, Alaa Elmi, Rafat Afifi Khattab, Omar M.L. Alharbi, Gunel Imanova Apr 2025

Preparation And Characterization Of Iron Oxide Nano-Adsorbent By Enteromorpha Flexuosa Algae Obtained From Yanbu Red Sea, Saudi Arabia, Prof. Imran Ali, Alaa Elmi, Rafat Afifi Khattab, Omar M.L. Alharbi, Gunel Imanova

Sultan Qaboos University Journal For Science

Water contamination caused by toxic cadmium metal ions is a worldwide problem. There is a need to explore new methods of cadmium removal from water. The green algae Enteromorpha flexuosa, obtained from the Red Sea in Yanbu, Saudi Arabia, was used to prepare iron nanoparticles. TEM, FT-IR, XRD, and SEM techniques were used to characterize the prepared nanoparticles. The prepared nanoparticle's surface was rough, with nanoparticle sizes ranging from 10 to 50 nm. The developed nanoparticles were used to adsorb cadmium ions from water in batch mode. With a 25.0 µg/L concentration, a temperature of 25˚C, 7.0 pH, 60 minutes …

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Analysis Of Fractional Linear Multi-Step Methods Of Order Four From Super-Convergence, Haniffa Mohamed Nasir, Khadija Al Hasani Apr 2025

Analysis Of Fractional Linear Multi-Step Methods Of Order Four From Super-Convergence, Haniffa Mohamed Nasir, Khadija Al Hasani

Sultan Qaboos University Journal For Science

We analyze two implicit fractional linear multi-step methods of order four for solving fractional initial value problems. The methods are derived from the Grunwald-Letnikov approximation of fractional derivative at a non-integer shift point with super-convergence. The weight coefficients of the methods are computed from fundamental G unwald weights, making them computationally efficient when compared with other known methods of order four. We also show that the stability regions are larger than that of the fractional Adams-Moulton and fractional backward difference formula methods. We present numerical results and illustrations to verify that the theoretical results obtained are indeed satisfied.

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Knowledge And Attitude Towards Covid-19 And Associated Mental Health Status Among Students Of Sultan Qaboos University, Oman, M Mazharul Islam, Ronald Wesonga, Iman Al Hasani, Afra Al Manei Apr 2025

Knowledge And Attitude Towards Covid-19 And Associated Mental Health Status Among Students Of Sultan Qaboos University, Oman, M Mazharul Islam, Ronald Wesonga, Iman Al Hasani, Afra Al Manei

Sultan Qaboos University Journal For Science

This study examined the COVID-19-related knowledge and attitude towards COVID-19 and associated mental health status during COVID-19 among the students of Sultan Qaboos University in Oman using an online cross-sectional survey conducted from 26 March - 25 April 2021 among the students of Sultan Qaboos University (SQU). Both descriptive and inferential statistical techniques, including multiple logistic regression analysis, were used for data analysis. Of the 1,951 respondents, 60% were females with a mean age of 22 years. About 13% were tested COVID-19 positive and 3.6% were tested positive. Overall, students demonstrated a high level (81%) of knowledge and a positive …

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Toxicological Evaluation Of The Leaves Of Mangifera Indica L. (Mango) On Albino Rats (Rattus Norvegicus), Tajudeen, O.Y, Titilola F. Salisu, Esther O. Oladele, 4department Of Animal And Environmental Biology, University Of Uyo, Akwa Ibom State, Nigeria, Clement Yaro, Nura Iliyazu, Adam Tukur, Abdulrazaq Izuafa, Muhammad A. Yari Apr 2025

Toxicological Evaluation Of The Leaves Of Mangifera Indica L. (Mango) On Albino Rats (Rattus Norvegicus), Tajudeen, O.Y, Titilola F. Salisu, Esther O. Oladele, 4department Of Animal And Environmental Biology, University Of Uyo, Akwa Ibom State, Nigeria, Clement Yaro, Nura Iliyazu, Adam Tukur, Abdulrazaq Izuafa, Muhammad A. Yari

Sultan Qaboos University Journal For Science

The increasing use of plant-based medicines necessitates safety evaluations of all medicinal plants. This study evaluated the effects of mango (Mangifera indica) leaf extracts on albino rats (Rattus norvegicus). The phytochemistry of the plant’s extract was evaluated, followed by a determination of its acute toxicity using 24 rats. Thereafter, the chronic toxicity of the extract was determined using another set of 24 rats, separated into four groups of six rats each. Rats in group 1 (the control) were administered distilled water, while groups 2, 3, and 4 received daily doses of 1000, 2000, and 3000 mg kg-1 body weight, respectively. …

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Haematological And Biochemical Changes In Albino Rats In Response To Bisphenol A (Bpa) Exposure, Enwongo Effiong Nduonofit, Obemeata Emmanuel Oriakpono Apr 2025

Haematological And Biochemical Changes In Albino Rats In Response To Bisphenol A (Bpa) Exposure, Enwongo Effiong Nduonofit, Obemeata Emmanuel Oriakpono

Sultan Qaboos University Journal For Science

The aim of this study was to investigate the haematological and biochemical alterations in albino rats induced by bisphenol A (BPA). Fifteen adult male albino rats were procured and separated into 3 different groups viz: group 1 (control), group 2 (50 mg/kg), group 3 (250 mg/kg); and were orally administered BPA at doses of 50 and 250 mg/kg/week. After 6 weeks of exposure, blood samples were collected for haematological and biochemical assay. The parameters analyzed included: red blood cell count, haemoglobin concentration, packed cell volume, white blood cell count, differential white blood cell count, kidney and liver function tests. The …

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Comparative Study On The Phytochemical, Antistaphylococcal And Antioxidant Properties Of The Stem Bark Of Jatropha Curcas L And Jatropha Gossypifolia L, Oyetayo, V.O, Temenu, O.E Apr 2025

Comparative Study On The Phytochemical, Antistaphylococcal And Antioxidant Properties Of The Stem Bark Of Jatropha Curcas L And Jatropha Gossypifolia L, Oyetayo, V.O, Temenu, O.E

Sultan Qaboos University Journal For Science

This study was conducted to assess the phytochemical, antistaphylococcal and antioxidant properties of the leaf and stem bark of Jatropha curcas and Jatropha gossypifolia. Ethanolic extract of the leaf and stem bark of Jatropha curcas and Jatropha gossypifolia was obtained using standard methods. Qualitative and quantitative phytochemical properties of theJatropha plant was assessed using standard methods. Antistaphylococcal and minimum inhibitory concentration of the extracts were assessed against Staphylococcal aureus obtained from different sources using agar diffusion method. Ferrous ion and hydroxyl radical scavenging activity of the extracts were also determined using standard methods. Quantitative phytochemical screening revealed that the distribution …

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Adsorption Of Methylene Blue Onto Hydrophobic Activated Carbon, El-Said Ibrahim El-Shafey, Said M. Al-Mashaikhi Apr 2025

Adsorption Of Methylene Blue Onto Hydrophobic Activated Carbon, El-Said Ibrahim El-Shafey, Said M. Al-Mashaikhi

Sultan Qaboos University Journal For Science

Activated carbon (AC) was prepared from date palm leaflets using NaOH activation. AC was oxidized using concentrated HNO3 to produce oxidized activated carbon (ON). Alkylamines including methylamine (M), dimethylamine (DM), ethylamine (E), diethylamine (DE), and diisopropylamine (DIP) were covalently immobilized onto ON to produce ONM, ONDM, ONE, ONDE, and ONDIP hydrophobic activated carbons, respectively. The surface area of AC (588 m2/g) decreased on oxidation with a further decrease on functionalization. These carbons were tested for methylene blue (MB) adsorption. Initial pH 7 was found optimum for the adsorption of MB. The hydrophobic activated carbons show faster adsorption (except for ONDE), …

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Geological Complications And Environmental Hazards Of The Cement Raw Materials Quarry Sites In Yemen, Ahmed M. Al-Anweh, Mohammed Ibrahim El-Anbaawy, Mohamed Mahmmoud Abu-Zeid, Ibrahim Al-Akhaly, S:17:"Sana'a University", } N/A Apr 2025

Geological Complications And Environmental Hazards Of The Cement Raw Materials Quarry Sites In Yemen, Ahmed M. Al-Anweh, Mohammed Ibrahim El-Anbaawy, Mohamed Mahmmoud Abu-Zeid, Ibrahim Al-Akhaly, S:17:"Sana'a University", } N/A

Sultan Qaboos University Journal For Science

Extensive field and site investigations were conducted to assess and evaluate the situation in the presently exploited quarries of cement raw materials in Yemen. These quarries have several geological complications represented mainly by high elevations, steep slopes, rugged topography, heterogeneity in bed thickness, lithologic composition and quality, presence of igneous sills and dykes, intensive fracturing and jointing and abundance of karstification features. Moreover, the processes of quarrying and related operations have several negative environmental impacts the most important of which are soil failure, overburden and land sliding, toppling and rock falls (which result in considerable mass wasting) and emission of …

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Role Of Nanotechnology In Diagnosing, Safeguarding, And Treating Covid-19, Rohini M. De Silvaa, Kenneth Hulugallaa, Panchali Ranasinghe, Gareth R. Williams, K.M. Nalin De Silva Apr 2025

Role Of Nanotechnology In Diagnosing, Safeguarding, And Treating Covid-19, Rohini M. De Silvaa, Kenneth Hulugallaa, Panchali Ranasinghe, Gareth R. Williams, K.M. Nalin De Silva

Sultan Qaboos University Journal For Science

Coronavirus disease (COVID-19) is arguably the worst health crisis the world has faced in the 21st century, and the World Health Organization declared this a “public health emergency of international concern” during the beginning of the pandemic and continued for a significant period of time. Considering the public health risk and the delay in introducing a suitable medical intervention to eradicate this virus, many reserachers embarked on different technologies to develop a cure. Nanotechnology has emerged as a promising weapon in the fight against COVID-19 and other similar viral diseases. The unique qualities of nanomaterials make them excellent for a …

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Prevalence Of Gastrointestinal Helminthes In Pigs Reared In Research Farms Of Michael Okpara University Of Agriculture, Umudike, South Eastern Nigeria, Ebube Charles Amaechi, Miracle Innocent Dike, Onyinye Mkpola Ukpai, Blessing Uzoamaka Ejike Apr 2025

Prevalence Of Gastrointestinal Helminthes In Pigs Reared In Research Farms Of Michael Okpara University Of Agriculture, Umudike, South Eastern Nigeria, Ebube Charles Amaechi, Miracle Innocent Dike, Onyinye Mkpola Ukpai, Blessing Uzoamaka Ejike

Sultan Qaboos University Journal For Science

Gastrointestinal parasitism in swine production is a world-wide problem especially in tropical resource-poor countries. These infections in animals result in significant economic losses. This study aimed to assess the prevalence and spectrum of gastrointestinal parasites of pigs reared in two research farms in Michael Okpara University of Agriculture, Umudike, South eastern Nigeria. From April, 2016 to July, 2016, 220 samples of pig faeces from two research farms (CASAP Research Farm and MOUAU Commercial Pig Farm) were analyzed using floatation and direct smear methods to identify varied parasitic stages present in the faeces. Data generated showed an overall prevalence of 64.6% …

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Optimization Of Independent Variables For The Production Of Extracellular Alpha Amylase By Bacillus Subtilis Imd34 Using Plackett-Burman Design, Henshaw Effiom, Josiah Lennox Apr 2025

Optimization Of Independent Variables For The Production Of Extracellular Alpha Amylase By Bacillus Subtilis Imd34 Using Plackett-Burman Design, Henshaw Effiom, Josiah Lennox

Sultan Qaboos University Journal For Science

Bacillus species are widely used for thermostable α-amylase production for various applications such as in the detergent and food industries. This research aimed to study the production of α-amylase by B. subtilis IMD34 in submerged fermentation conditions using Plackett-Burman (PB) design, along with the optimization of certain environmental factors for optimal growth of amylolytic bacteria. Plackett-Burman design was used to evaluate the effect of ten independent variables on α-amylase production. Maximum enzyme activity was recorded in a medium containing (g/l); starch (6.0), peptone (12.0), K2HPO4 (1.0), Na2HPO4 (2.0), NaCl (0.6), Na2SO4 (0.1), MgSO4.7H20 (1.0), FeCl3.6H2O (0.02), CaCl2.2H2O (0.02) and with …

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