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Ameliorative effect of polydatin and polydatin-loaded chitosan nanoparticles against diabetes-induced pulmonary disorders in rats J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2021-01-24 Fatma Mostafa; Sanaa R. Galaly; Hanaa M. Mohamed; Adel Abdel-Moneim; Manal Abdul-Hamid
The current study aims to evaluate the ameliorative effect of polydatin-loaded-chitosan nanoparticles (PD-CSNPs), polydatin (PD), and metformin on Diabetes-induced pulmonary disorders. After induction of diabetes, rats are classified into five groups, diabetic control and diabetic rats treated daily for four weeks with; PD, PD-CSNPs, chitosan-nanoparticles and metformin. Rats treated with PD and PD-CSNPs
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A Caputo (discretization) fractional-order model of glucose-insulin interaction: numerical solution and comparisons with experimental data J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2021-01-23 Mansoor H. Alshehri; Faisal Z. Duraihem; Ahmad Alalyani; Sayed Saber
In this paper, we investigate a (discretization) Caputo fractional glucose-insulin model qualitatively with incommensurate orders that appear in Bergman's minimal model. After intravenous tolerance testing, the model is used to characterize the blood insulin and glucose metabolism. We also prove that the presented model possesses existence, uniqueness, non-negative, and boundedness solution. We also
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Adsorption removal of Congo red onto L-cysteine/rGO/PANI nanocomposite: equilibrium, kinetics and thermodynamic studies J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2021-01-23 Saba Razzaq; Mehwish Akhtar; Sonia Zulfiqar; Shagufta Zafar; Imran Shakir; Philips O. Agboola; Sajjad Haider; Muhammad Farooq Warsi
In this paper, adsorption of Congo red (CR) onto L-cysteine decorated with reduced graphene oxide/polyaniline composite at room temperature was investigated. The morphology and structure properties of as-prepared nanocomposite were verified by UV–visible spectroscopy (UV–visible), powder X-ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR), scanning electron microscopy (SEM)
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Theoretical investigation of the perturbed artificial satellite problem using oblate continued fraction potential J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2021-01-18 S. E. Abd El-Bar
In this research article, a new idea concerning the application of concept of the continued fractions to the expansion of the geopotential is treated. The perturbed motion of the satellite in the oblate gravitational field of the Earth using a potential of a continued fractions procedure is studied. To compare with the usual perturbation theory, the continued fraction series is truncated beyond the
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Enhanced electrochemical properties of silver-coated zirconia nanoparticles for supercapacitor application J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-31 Muhammad Naeem Ashiq; Ali Aman; Thamraa Alshahrani; Muhammad Faisal Iqbal; Aamir Razzaq; Muhammad Najam-Ul-Haq; Afzal Shah; Jan Nisar; Deependra Tyagi; Muhammad Fahad Ehsan
ABSTRACT Silver-coated ZrO2 and individual ZrO2 nanoparticles have been synthesized using the simple reduction and co-precipitation methods, respectively. The synthesized products were examined using the X-ray diffraction, energy-dispersive X-ray and UV–visible spectroscopy, which confirmed the successful synthesis of materials. Scanning electron microscopy and transmission electron microscopy revealed
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Metagenomic investigation of faecal microbiota in sheep and goats of the same ages J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-23 I. I. Shabana; N. N. Albakri; N. A. Bouqellah
Despite the significant influence of the microbial communities that inhabit the ruminant’s gastrointestinal tract on their health and production, the study of the composition and variations in sheep and goats gut microbiome is limited. The present study investigated the faecal microbiomes of sheep and goats at 6 and 12 months of age using Illumina MiSeq, targeting the 16S rRNA gene V3-V4 region sequences
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Three multiply connected K n -residual graphs J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-14 Kai Xu; Huiming Duan; Shihui Yang
ABSTRACT The K n - residual graph was proposed by P. Erdös, F. Harary and M. Klaw. They also proposed conclusions and conjectures regarding connected m − K n - residual graphs. When m = 1 , n ≠ 1 , 2 , 3 , 4 , the authors proved that K n + 1 × K 2 is the only connected residual graph with a minimum order. In this paper, we proved that there are three different connected 3 − K 5 - residual graphs
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Hypoglycaemic, insulin releasing, and hepatoprotective effect of the aqueous extract of Aloe perryi Baker resin (Socotran Aloe) in streptozotocin-induced diabetic rats J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-12 Tahany Saleh Aldayel; Ghedeir M. Alshammari; Ulfat Mohammed Omar; Mary H. Grace; Mary Ann Lila; Mohammed A. Yahya
ABSTRACT This study evaluated the anti-diabetic and hepatic protective effect of the aqueous extract of the Aloe perryi (AP) in streptozotocin-induced diabetic rats. Rat were divided into control, diabetic, diabetic + glimepiride, diabetic + AP (150 or 300 mg/Kg) groups. AP (300 mg/Kg) alone lowered fasting serum glucose levels but increased insulin levels and HOMA-β. At both doses, AP significantly
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Synthesis, XRD, HAS, in silico molecular docking studies and biological assessment of novel Schiff base compounds as anti-cancer and antimicrobial agents J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Musa A. Said; Wael S. Al-Harbi; Mani Shanmugam; Faizah S. Aljohani; Nahla A. Bouqellah; Nadia S. Al-Kaff
In this study, versatile multifunctional Schiff base (SB) derivatives were synthesized. Compounds 1–8 were prepared by a mild condition and were pharmacologically assessed for their role in vitro anti-cancer and their impact on human fibrosarcoma (HT-1080) and cervical cancer cells (HeLa), in addition to their antimicrobial activity regarding fungal strains, gram-positive and gram-negative bacteria
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Removal of amprolium from water by roots and seeds ash of Salvadora persica J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Samah Ali; Abeer Abdelhalim
ABSTRACT Amprolium is one of the veterinary pharmaceuticals that has been widely used as antibacterial agents and as a growth promoter in livestock, it can produce chronic adverse actions that could affect many organisms and humans. In this study, Salvadora persica stem ash and roots were used as biosorbent for the removal of Amprolium hydrochloride (AMP) from aqueous systems. The effect of different
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Theoretical studies of the rotational and tautomeric states, electronic and spectroscopic properties of favipiravir and its structural analogues: a potential drug for the treatment of COVID-19 J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Yunusa Umar
ABSTRACT Favipiravir is a broad spectrum antiviral drug that has shown activity against many viruses. Sequel to the recent outbreak of COVID-19, favipiravir is investigated as one of the potential drugs for the treatment of SARS-CoV-2. To augment these efforts, this article reports the rotational isomers, tautomeric states, electronic and spectral properties of favipiravir and its five analogues (Cl
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Towards potential inhibitors of COVID-19 main protease Mpro by virtual screening and molecular docking study J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Moujane Soumia; Zaki Hanane; Moualij Benaissa; Filali Zegzouti Younes; Alem Chakib; Bouachrine Mohammed; Benlyas Mohamed
ABSTRACT The COVID-19 pandemic caused by SARS-CoV-2 has started in December 2019 in Wuhan, China, and become a global health problem. The SARS-COV-2 main protease (Mpro) play a crucial role in the multiplication and control of virus activity. Therefore, we assume that the inhibition of these enzymes inhibits viral replication. To determine potential inhibitors of this protease among existing chemical
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Genetic variability assessment of worldwide spinach accessions by agro-morphological traits J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Madiha Rashid; Zubaida Yousaf; Muhammad Najeeb Ullah; Muneeb Munawar; Nadia Riaz; Afifa Younas; Arusa Aftab; Bushra Shamsheer
Spinach is a highly nutritive and medicinally important leafy vegetable cultivated in many countries worldwide. Diversity in the gene pool of a species may affect the adaptability to a new environment as well as to develop new varieties more tolerant to stress and pathogens. To assess the genetic variability of species, morphological traits are considered as the simplest markers. Therefore, a field
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Characterization and biological investigation of silver nanoparticles biosynthesized from Galaxaura rugosa against multidrug-resistant bacteria J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Raghad R. Alzahrani; Manal M. Alkhulaifi; Nouf M. Alenazi; Nawal M. Almusayeib; Musarat Amina; Manal A. Awad; Aarif H. Elmubarak; Noura S. Aldosari
Bacterial drug resistance poses a global challenge to established antibacterial prevention and treatment schemes. Recent approaches focus on raising algal extracts' efficacy by fusing them to other antibacterial agents employing nanotechnology. Here, we successfully biosynthesized AgNPs using Galaxaura rugosa crude methanol extract (AgNPCR) and raw powder aqueous (AgNPAQ) solution. The resultant AgNPs
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Antioxidant, anti-inflammatory and hepatoprotective effects of olive fruit pulp extract: in vivo and in vitro study J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-05 Saleh A. Almatroodi; Ahmad Almatroudi; Shehwaz Anwar; Ali Yousif Babiker; Amjad Ali Khan; Mohammed A. Alsahli; Arshad Husain Rahmani
The current study aimed to investigate the antioxidant, anti-inflammatory and hepatoprotective activity of olive fruit pulp extract (OFPE) through in vivo- and in vitro-based studies. Oral administration of OFPE demonstrated a significant reduction in liver biomarker enzymes, inflammatory marker (IL-6, TNF-α, and C-reactive protein (CRP)) level and recovered the antioxidant enzymes and total antioxidant
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Toxic metal ions contamination in the groundwater, Kingdom of Saudi Arabia J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-02 Imran Ali; Mohd Abul Hasan; Omar M. L. Alharbi
The Kingdom of Saudi Arabia (KSA) is one of the rising countries in the Gulf region but always scared of water; being present in the arid desert. Among some water resources groundwater is one of the most significant ones in this country but unfortunately is being contaminated by the toxic metal ions. The present article describes the status of groundwater contamination by toxic metal ions. The meal
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New Co-MnO based Nanocrsytallite for photocatalysis studies driven by visible light J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-12-02 Muhammad Touqeer; Mirza Mahmood Baig; Muhammad Aadil; Philips O. Agboola; Imran Shakir; Mohamed F. Aly Aboud; Muhammad Farooq Warsi
ABSTRACT A proficient, eco-friendly, and cost-effective catalyst for remediation of organic contaminants in the environment is a burning issue in recent decades. In the present study, the cobalt doped MnO (Co-MnO) photocatalyst was synthesized via cost-effective and environmentally friendly reverse micelle route. The X-ray diffraction (XRD) results confirmed the synthesis of well-defined cubic-phased
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Molecular docking and dynamic simulations of some medicinal plants compounds against SARS-CoV-2: an in silico study J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-21 Isaiah A. Adejoro; Damilare D. Babatunde; Gideon F. Tolufashe
ABSTRACT COVID-19 pandemic has poses urgent health challenge, and this project aims to identify potential inhibitors to combat this virus. We screened 198 bioactive compounds from five selected medicinal plants previously reported to be antiviral against SARS-CoV-2 protease and two co-receptors followed by molecular dynamics simulations. From the screened compounds, Astragalin demonstrated very strong
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DFT evaluation of the effects of OH, NH2 and Br substituents on the properties of 2,2′-bipyridine derivatives J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-18 Saheed A. Popoola; Marwan H. M. Al-Harbi; Ahmed H. Al-Rashidi; Mutaz S. A. Almarwani; Abdullah R. Almohammedi; Abdulganiyu. O. Logunleko; Abdulaziz A. Al-Saadi
A theoretical assessment of the effects of the OH, NH2 and Br substituents on the properties of 2,2′-bipyridine has been carried out using density functional theory approach. The substituents were found to alter both electronic and structural properties of substituted 2,2′-bipyridine with the inductive and resonance effects playing significant roles. For the relative stability study, an order of ortho
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On the quaternion projective space J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-18 Y. Omar; A. M. Shahin; E. Ahmed; A. M. K. Tarabia; H. A. A. El-Saka
Apart from being a vital and exciting field in mathematics with interesting results, projective spaces have various applications in design theory, coding theory, physics, combinatorics, number theory and extremal combinatorial problems. In this paper, we consider real, complex and quaternion projective spaces. We focus on the geometric feature of the sectional curvatures. We first study the real and
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Class of meromorphic univalent functions with positive coefficients associated with a generalized q-Sălăgean operator J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-18 M. K. Aouf; A. O. Mostafa; F. Y. Al-Quhali
In this paper, using q − derivative operator, we define the class Σ q , v ∗ ( n , α , β , λ ) of meromorphic univalent functions and obtain coefficient estimates, distortion, closure theorems, modified Hadamard products, some radii for functions in this class and family of integral operators. Further, we determine partial sums results.
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Abundant new computational wave solutions of the GM-DP-CH equation via two modified recent computational schemes J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-19 Mostafa M. A. Khater; Mustafa Inc; Raghda A. M. Attia; Dianchen Lu; Bandar Almohsen
This work employs two new modified computational schemes to find the exact travelling and solitary wave solutions of the general modified Degasperis-Procesi Camassa-Holm (DP CH) equation that is used to illustrate the dynamical behaviour of shallow water. These schemes are the modified exponential expansion and the modified Khater methods that are used to formulate the computational solutions in various
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Geoelectrical analysis for evaluating the groundwater characteristics of wadi El Madamud Area, Southeast Luxor, Egypt J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-11-02 Mohamed A. S. Youssef
In this work, the totally 31 Vertical Electric Soundings (VESes) were carried out at wadi El Madamud, Southeastern Luxor city. These are processed and interpreted the forms of geologic models composed of five geoelectric layers of varying resistivities, lithologies, depths and thicknesses. They are surfacial unconsolidated dry silts, sands and gravels, consolidated silts, sandy gravels, sandstone and
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Assessment of the ameliorative effect of Hypericum perforatum on olanzapine-induced hepatic oxidative stress and metabolic abnormalities in experimental male albino rats J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-21 Abeer M. Abd El-Hameed; Areej A. Eskandrani; Fadwa A. Elroby
Olanzapine (OLZ), one of the second-generation antipsychotics, is effective in stress accompanying with chronic psychiatric disease. But the effect of chronic long-standing use of OLZ administration on the liver and its association with metabolic side effects plus weight gain is still unclear. The objective of our study was to evaluate the antioxidant effect of Hypericum perforatum (HP) on OLZ-induced
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Ovicidal, pupicidal and bactericidal effects of aminopyridinium-based ionic liquids on Culex pipiens and certain human pathogenic bacteria J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-24 Medhat Ali; Reda Ibrahim; Saeed Alahmadi; Sultan M. Alsharif; Fatimah Mansour; Hayam Elshazly; Dalia Shawer
Culex pipiens (Diptera: Culicidae) is one of the most prevalent mosquitoes particularly in the Al-Madinah Al-Munawwarah region, Kingdom of Saudi Arabia, transmitting numerous diseases such as arboviruses, avian malaria, elephantiasis, dirofilariasis, and encephalitis. Worldwide, Culex pipiens has developed resistance to numerous insecticides; therefore, considerable efforts have been done to introduce
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Synthesis of poly(vinyl alcohol-co-ethylene)/cellulose composite membranes and their application in wastewater treatment J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-20 Cemal Çifci; Muhammed Raşit Bayraktar; İbrahim Erol; Hüseyin Enginar
ABSTRACT Firstly, original poly(vinyl alcohol-co-ethylene) (PVA-co-PE)/cellulose composite membranes were prepared and characterized. Then these composite membranes were applied for wastewater treatment. For this purpose, separation of Iron (III) and Copper (II) ions from the aqueous solutions with stirred ultrafiltration cell was investigated. These metal ions were complexed by using alginic acid
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The environmental and economic importance of Astragalus Spinosus in land restoration J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-20 Modi Ahmed; Noor Al-Dousari
ABSTRACT Astragalus spinous is a native perennial shrubs from Leguminosae family that widely distributed in severely degraded lands at northern Kuwait. A restoration program was applied via levelling and refilling the quarries and rehabilitation of the natural vegetation and wildlife to their original outward appearance before degradation. The existence of Astragalus shrubs indicated that soil after
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An approximate solution of a differential inclusion with maximal monotone operator J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-13 Abdallah Beddani
The theory of differential inclusions has played a central role in many areas as biological systems, physical problems and population dynamics. The principle aim of our work is to compute explicitly the discrete approximate solution of a differential inclusion including a maximal monotone operator. Also we present a numerical application of our results for showing how to compute the discrete approximate
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Ecofriendly microwave-assisted preparation, characterization and antitumor activity of some propylimidazolium-based Ionic liquids derivatives J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-12 Bakhet. A. Alqurashy
ABSTRACT An ecofriendly and efficient preparation of a set of a new 1-propylimidazolium-based ionic liquids (1–20) has been manufactured by using both microwave irradiation and conventional procedure. Different spectral analysis (FT-IR, mass spectra, NMR and elemental analysis) were utilized to examine the structures of the newly prepared ILs. The in vitro antitumor activities of all ILs (1–20) were
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Studies on correlations between soil chemistry and bacterial population in rhizosphere of Bt and non-Bt cotton and characterization of rhizobacteria J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-10 Muhammad Ibrahim; Fiaz Ahmad; Haq Nawaz; Muhammad Aslam; Muhammad Aslam Shad
The present study was planned to explore the relationship between soil chemistry with bacterial population of Bt and non-Bt cotton and their phenotypic and molecular characteristics. The pre-plant soil and rhizospheres of Bt and non-Bt cotton were collected and analyzed for some soil parameters and bacterial population. The bacterial isolates were analyzed for their morphological, biochemical, and
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New exact and numerical solutions with their stability for Ito integro-differential equation via Riccati–Bernoulli sub-ODE method J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-10-02 Abdulghani Ragaa Alharbi; Mohammed Bakheet Almatrafi
This paper points out several exact travelling wave solutions for ( 1 + 1 ) -dimensional Ito integro-differential equation via the Riccati–Bernoulli sub-ODE approach. We also aim to develop a numerical solution of the respective equation using central finite difference formulas. The stability of the presented exact and numerical solutions is also deduced using the Hamiltonian system and Von Neumann's
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Fractional anisotropic diffusion equation in cylindrical brush model J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-29 M. K. Sharaf; E. K. El-Shewy; M. A. Zahran
In this work, we have suggested a neat method of obtaining the fractional diffusion equation for an anomalous anisotropic diffusion process using fractal brush structure as a background medium. For the sake of completeness, we intend to present an analytical solution in the case of the Dirichlet boundary condition. Finally, some notes and remarks are represented to show the vital role of a physical
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Application of remote sensing and GIS techniques for exploring potential areas of hydrothermal mineralization in the central Eastern Desert of Egypt J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-29 Xianzhi Shi; Nassir Al-Arifi; Mohamed Abdelkareem; Fathy Abdalla
The integration of remotely sensed data allowed the successful characterization of the hydrothermal alteration zones of the Abu–Gaharish area in the Central Eastern Desert of Egypt using image transformation techniques. The integration of several evidential maps highlighted the plausible areas with high concentrations of argillic and phyllic, key hydrothermal minerals that reflect the intensity of
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Diachronic study of the great Sebkha of Oran (western Algeria) based on SAR radar images (1992–2011) J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-29 Kamel Hachemi; Yasmina Amrouni; Mohamed Daoudi; Abdullah O. Bamousa
ABSTRACT The Sebkha of Oran, given its large size, is considered to be a remarkable feature of the west Algeria. The study of its evolution proved to be essential, following many interrogations specifically concerning its extension and its role in the ecological balance of the region. We aim to study the changes of the Sebkha over the last 20 years. To conduct the study, we used the Synthetic Aperture
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Formulation, characterization, in vitro and in vivo evaluations of self-nanoemulsifying drug delivery system of luteolin J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-26 Mohammad Javed Ansari; Abdullah Alshetaili; Ibrahim Abdulaziz Aldayel; Faisal Mohammed Alablan; Bader Alsulays; Saad Alshahrani; Ahmad Alalaiwe; Mohd Nazam Ansari; Najeeb Ur Rahman; Faiyaz Shakeel
The purpose of this study was to develop a self-nanoemulsifying drug delivery system (SNEDDS) for the improvement of solubility and bioavailability of luteolin in order to enhance its therapeutic benefits. Formulations were prepared by spontaneous emulsification method which involved low energy mixing of appropriate amounts ofcastor oil, kolliphor & polyethylene glycol 200. The developed formulae were
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Impacts of electric field quality on MHD Carreau AA7075 – water nanofluid flow J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-26 Mansoor H. Alshehri; Faisal Z. Duraihem; R. Kandasamy
In this report, the electric field strength impact on MHD Carreau AA7075 – water nanofluid flows is controlled by a stretching sheet with formable thickness. The three simple models of nanoparticle shapes are enrolled into a pattern, i.e. sphere ( m = 3.0 ) , cylinder ( m = 6.3698 ) and lamina ( m = 16.1576 ) . The powerful partial differential equations (PDEs) are reconstructed into ordinary differential
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Effect of antidiabetic therapy on TNF-α, IL-18, IL-23 and IL-35 levels in T2DM patients with coincidental Helicobacter pylori infection J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-24 Adel Abdel-Moneim; Sanaa M. Abd El-Twab; Ahmed Nabil; Salma A. El Kazafy
This study aimed to evaluate the relationship between tumour-necrosis factor-alpha (TNF-α), interleukin (IL)-18, IL-23, IL-35 and Heilcobacter (H) pylori infection with T2DM. A total of 25 healthy subjects and 102 confirmed T2DM patients were enrolled in this study. Diabetic patients were subdivided into six groups according to antidiabetic therapy. Diabetic non-treated patients exhibited a significant
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Super electron acoustic propagations in critical plasma density J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-23 H. G. Abdelwahed
The propagation of some new electrostatic cnoidal, super-solitons, super-periodic and shocklike waves in Earth magneto-tail electron acoustic (EA) plasma at critical density has been investigated via MKP equation. These MKP solutions are obtained by the method of expansion Jacobian elliptic function (EMJEF). Numerous of the given solutions are significant on the observations of broadband electrostatic
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Photo-thermal interactions in a semi-conductor material with cylindrical cavities and variable thermal conductivity J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-23 Ibrahim Abbas; Aatef Hobiny; Marin Marin
This study investigates the photo-thermo-elastic interaction in an infinite semi-conductor material with cylindrical cavities. The effect of variable thermal conductivity through the photo-thermo-elastic transport process is studied using the coupled models of thermo-elasticity and plasma waves. The internal surface of the cylindrical cavity is loaded by a thermal shock varying heat. The eigenvalue
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New analytical formalisms used in finite element analysis of robots with elastic elements J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-22 Sorin Vlase; Iuliu Negrean; Marin Marin; Maria Luminiţa Scutaru
Obtaining the equations of motion for an element in finite element analysis (FEA) model in the analysis of a multi-body system (MBS) having component elastic elements represents an important (maybe the main) step to build a soft able to solve such a problem numerically. In use FEA in the study of a MBS with elastic elements, the method of Lagrange's equations is especially used at present. This method
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Cypermethrin induced apoptosis and testicular toxicity by upregulation of p53 in the brain and testis of male rats is alleviated by Sesame oil J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-22 Abeer M. Abd El-Hameed; Hanan S. Mahmoud
One of the synthetic pyrethroid pesticides is Cypermethrin (CYP) which has been widely used in Egypt. CYP is primarily believed to be safe for ordinary application. Many studies presented its neural and reproductive toxicity in nonmammalian, mammalian and different animal species. Up till now, there is not enough information known about the reproductive toxicity mechanism induced by the CYP and there
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Groundwater potential mapping using GIS, linear weighted combination techniques and geochemical processes identification, west of the Qena area, Upper Egypt J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-22 Fathy Abdalla; Karem Moubark; Mohamed Abdelkareem
The water demand in Egypt has risen due to limited surface water and varied uses. Geological and hydrological data, radar, optical remote sensing data, and Geographic Information System techniques delineate groundwater availability zones in the study area. Thematic layers (lithology, topography, slope, stream networks, lineaments, and rainfall) were integrated into the ArcGIS 10.4 using a linear weighted
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Effect of aluminium phosphide (ALP) gas inhalation exposure on adipose tissue characteristics and histological toxicity in male rats J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-16 Zoya Tahergorabi; Mahmoud Zardast; Ali Naghizadeh; Borhan Mansouri; Iman Nakhaei; Mohsen Zangouei
Considering the increasing incidence of fatal aluminium phosphide (ALP) poisoning and its toxicological aspects and also the paucity of our knowledge concerning the ALP effect on adipose tissue and adipokines, the present study aimed to assess the effect of acute and sub-chronic ALP inhalation exposure on adipose tissue characteristics and histological alterations in rats. This experimental study was
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Molecular dynamics simulation of carbonyl reductase 1 clarifies the structural switch in drug metabolism J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-16 Mahmoud Kandeel; Abdullah Alzahrani
Carbonyl reductase 1 (CBR1), a short-chain dehydrogenase/reductase, is important in the phase I reduction of drugs. Glutathione (GSH) facilitates the access of low-affinity substrates to the CBR1 active site. This study investigates the path of substrates to the CBR1 active site when GSH occludes the entrance to NADP and binds its catalytic residues. A set of CBR1 structures bound with GSH were subjected
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A comparative study on susceptibility, course of parasitemia, and pattern of infection with Trypanosoma evansi between different laboratory animals J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-13 Al- Shaimaa M. Sadek
This study investigated the susceptibility of eight different animal species (rat, mice, guinea pigs, hamsters, rabbits, sheep, goats, and chicken) experimentally infected with Trypanosoma evansi isolated from camels. In all laboratory animals, the number of trypanosomes was standardized according to the weight of the animal, and daily examination of the blood was conducted to assess the presence of
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Dysprosium substituted nickel cobalt ferrite nanomaterials and their composites with reduced graphene oxide for photocatalysis J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-13 Muhammad Shahid; Ibrahim A. Alsafari; Akmal Jamil; Fekri A. Ahmed Ali; Sajjad Haider; Philips Agboola; Imran Shakir
High-quality nanostructure of dysprosium substituted nickel–cobalt ferrite and their composite with reduced graphene oxide (rGO) were synthesized. The structuraland photocatalytic properties of prepared samples were studied. The XRD and FTIR analysis confirmed the FCC spinel structure. The calculated average crystallite size of nanoparticles was around 7.8 nm. The bandgap energy of synthesized composition
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Strong Terahertz radiation generation via wakefield in collisional plasma J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-11 Hitendra K. Malik; Divya Singh; Ravinder Kumar
The present calculations show that the application of an external magnetic field can generate additional component of the wakefield suitable for Terahertz (THz) radiation generation in a collisional plasma. Based on the approach of perturbation technique under quasi-static approximation, a study is made on the field of emitted radiation pulses from the wakefield when the super-Gaussian laser beams
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On bounds for topological descriptors of φ-sum graphs J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-11 Yu-Ming Chu; Saira Javed; Muhammad Javaid; Muhammad Kamran Siddiqui
The properties of chemical compounds are very important for the studies of the non-isomorphism phenomenon's related to the molecular graphs. Topological indices (TIs) are one of the mathematical tools which are used to study these properties. Gutman and Trinajsti [Graph theory and molecular orbitals. Total π-electron energy of alternant hydrocarbons. Chem Phys Lett. 1972;17(4):535–538] defined the
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Effect of tin on bandgap narrowing and optical properties of ZnO–Zn2SnO4 electrospun nanofibre composite J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-08 Hakeem Sanya Bolarinwa; Michael Ugwu Onuu; Lukman Olalekan Animashaun; Samson Oluwagbemiga Alayande; Adeniyi Yisau Fasasi
The quest for improved visible light absorption in ZnO-based photocatalysts and photodetectors is a prevailing research problem. One method of solving this problem is by narrowing the band gap of this material well into the range of visible light energy. In this work, we have demonstrated considerable band narrowing into the visible region in our electrospun ternary ZnO–Zn2SnO4 nanofibres. We also
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Pell–Lucas collocation method for numerical solutions of two population models and residual correction J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-08 Şuayip Yüzbaşı; Gamze Yıldırım
Our aim in this article is to present a collocation method to solve two population models for single and interacting species. For this, logistic growth model and prey–predator model are examined. These models are solved numerically by Pell–Lucas collocation method. The method gives the approximate solutions of these models in form of truncated Pell–Lucas series. By utilizing Pell–Lucas collocation
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A metagenomic survey of lamb's pre- and post-weaning fecal microbiomes J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-04 N. N. Albakri; N. A. Bouqellah; I. I. Shabana
Weaning is known to be the most stressful and critical transition experienced by lambs, it affects the structure of the gastrointestinal tract microbiomes, which significantly influences the lamb’s health and performance. The present study identified the structure of lambs' pre- and post-weaning fecal microbiomes to define the implications of the weaning transition. Illumina MiSeq yielded a total of 5169 sequence
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Experimental investigation of resonant frequency of sandstone saturated with magnetite nanofluid J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-04 Fatai Adisa Wahaab; Lawal Lanre Adebayo; Abdullah Musa Ali; Afeez Oluwatobi Yusuff
Electromagnetic wave is a viable means of introducing energy into reservoirs for the recovery of residual oil. However, previous studies have not considered the precise frequency of the electromagnetic (EM) wave. These studies focused on EM heating, not considering the efficiency dependence of EM transmitter and EM propagation on the EM properties of the medium. Thus, sandstone effective permittivity
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Inclusion and properties neighbourhood for certain p-valent functions associated with complex order and q–p-valent Cătaş operator J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-09-01 M. K. Aouf; S. M. Madian
Here in our paper, we present two new subclasses of multivalent analytic functions and complex order by using q–p-valent Cătaş operator. Also we obtain coefficient estimates and consequent inclusion relationships involving the N i , δ p , q ( f ) -neighbourhood of these classes.
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A highly purified C-phycocyanin from thermophilic cyanobacterium Thermosynechococcus elongatus and its cytotoxic activity assessment using an in vitro cell-based approach J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-29 Eithar El-Mohsnawy; Rasha Abu-Khudir
C-phycocyanin (C-PC) is a protein–pigment widely used in nutrition and pharmaceutical applications. High purity of C-PC is a limiting factor required for its medical use; hence purity improvement with successful plausible pharmaceutical application is the state of the art of the present work. Highly purified C-PC (A620/A280 = 6.6) was obtained from Thermosynechococcus elongatus. Combined enzymatic
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Periodic solutions for first-order cubic non-autonomous differential equation with bifurcation analysis J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-26 Saima Akram; Allah Nawaz; Nusrat Yasmin; Humaira Kalsoom; Yu-Ming Chu
This article deals with the development of the number of periodic solutions for ordinary differential equations. We investigated focal values for first-order non-autonomous differential equation for periodic solutions from a fine focus z = 0 . Periodic solutions with polynomial coefficients are executed for classes C 10 , 3 , C 10 , 4 , and C 10 , 5 . Limit cycles are found for both non-homogeneous
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Effect of CaCO3 nanoparticles on the microstructure and fracture toughness of ceramic nanocomposites J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-20 A. Hakamy
ABSTRACT This study investigated the effect of using calcium carbonate (CaCO3) nanoparticles on the microstructural properties, flexural strength and fracture toughness of ceramic nanomaterials. The flexural strength and fracture toughness were evaluated for CaCO3 nanoparticle contents of 1%, 2%, and 3% by weight of cement powder. The microstructural analyses from X-ray diffraction showed that nano-CaCO3
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Ion-acoustic gardner solitons and double layers in magnetized electron-positron-ion quantum plasma J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-19 A. Atteya; M. A. El-Borie; G. D. Roston; A. S. El-Helbawy
The nonlinear propagation of ion-acoustic Gardner solitons (GSs) and double layers (DLs) in electron-positron-ion (EPI) plasma in the presence of an external static magnetic field has been examined. The Korteweg–de Vries (KdV), modified KdV (mKdV), and Gardner equations have been derived by the reductive perturbation technique. It is seen that the amplitude, polarity, speed, width of such solitons
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Structural, dielectric and electrical characterization of (Co)x(Ni/bentonite) composites J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-19 Abdullah A. Alotaibi; T. A. Abdel-Baset; Ali H. Bashal
Based on commercial bentonite (bento) and two metal precursors, including NiCl2 and CoCl2, diverse series of composites were prepared by incipient wet impregnation. The prepared composites were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-Ray spectroscopy. X-ray diffraction studies show that the crystallite size decreased as increasing the wt. % of cobalt
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Bayesian and non-Bayesian reliability estimation of multicomponent stress–strength model for unit Weibull distribution J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-16 Refah Mohammed Alotaibi; Yogesh Mani Tripathi; Sanku Dey; Hoda Ragab Rezk
ABSTRACT Mazucheli et al. introduced a new transformed model referred as the unit-Weibull (UW) distribution with uni- and anti-unimodal, decreasing and increasing shaped density along with bathtub shaped, constant and non-decreasing hazard rates. Here we consider inference upon stress and strength reliability using different statistical procedures. Under the framework that stress–strength components
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Some inferences based on a mixture of power function and continuous logarithmic distribution J. Taibah Univ. Sci. (IF 1.863) Pub Date : 2020-08-13 Ahmed M. T. Abd El-Bar; Maria do Carmo S. Lima; M. Ahsanullah
In recent decades, many families of distributions and, consequently, new distributions are proposed in order to provide a good flexibility and fit to real data sets. However, several of these distributions have a complicated shape to express their probability density function (pdf) and cumulative distribution function (cdf). Examples of families that involve such functions are: beta-G (see Eugene et
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