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Anticorrosion properties and thin film composite deposition of ZnSiC-Cr_3C_2 coating on mild steel

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Defence Technology（防务技术） 2019年第1期15卷 106-110页

作者： A.A.Ayoola o.S.i.Fayomi A.P.i.Popoola Chemical Engineering Department Covenant University Chemical Metallurgical and Materials Engineering DepartmentTshwane University of Technology Mechanical Engineering Department Covenant University

This work considered the influence of Cr3 C2 particle loading on microstructure and mechanical properties of Zn-SiC-Cr3 C2 nanocomposite produced via electrocodeposition are investigated. The surface nature of the nanocomposite coatings were characterized using scanning electron microscope(SEM)coupled with the energy dispersive spectrometer(EDS). Abrasive wear behaviour and hardness property of Zn-SiC-Cr3 C2 nanocomposite produced were investigated using CERT UMT-2 multi-functional tribological tester and Dura Scan hardness tester. The corrosion property was evaluated through linear polarization approach. The result showed that the coatings exhibited good stability and Cr_3 C_2 nanocomposite loading significantly improved the micro structural performance, hardness property,wear resistance as well as corrosion resistance of the coatings.

关键词： Zn-SiC-Cr3C2 Electrodeposition Coatings Corrosion resistance Hardness

Apolipoprotein A-i binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan Choi Soo-Ho Choi Keun-Young Kim Yury i.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

Application of Basin Morphometry Laws in catchments of the south-western quadrangle of south-eastern Nigeria

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Frontiers of Earth Science 2013年第3期7卷 361-374页

作者： A.o AiSUEBEoGUN i.C EZEKWE Department of Geography and Environmental Management Niger Delta University Wilberforce Island 560001 Nigeria Department of Geography and Environmental Management University of Port Harcourt Port Harcourt 500001 Nigeria

The relationship between process and form has been at the core of research in fluvial geomorphology. Form-process relationships of a natural river basin are strongly influenced by its hydrologic and sedimentologic processes as basin morphometric properties of length, shape, and relief, change in response to various hydrologic stimuli from the environment, but usually in line with well established laws. in the four fiver basins （orashi, otamiri, Sombreiro, New Calabar） examined in this study, however, empirical evidence does not conform neatly with theoretical postulates. Remarkable variations are noted in the molphometric properties of the catchments, when compared with established morphometric laws. The most varied in conformity are the orashi and New Calabar basins, although the Sombreiro and otamiri catchments also show some level of variation. Prime explanation for the morphometric and topographic non-conformity is caused by the nature of surficial material and the profoundly shallow relief of much of the study area, especially the alluvial flood and deltaic plains to the south and south-west of the study area.

关键词： catchments watershed morphology morpho- metric analysis Nigeria Africa

overcoming mitochondrial dysfunction in neurodegenerative diseases

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Neural Regeneration Research 2023年第7期18卷 1486-1488页

作者： João Pessoa Ana i.Duarte CNC-Center for Neuroscience and Cell Biology CIBB-Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal

Due to their intense electrical activity,neurons have high energy *** requirement makes them particularly sensitive to mitochondrial *** all eukaryotic cells,neurons have intrinsic mechanisms to mitigate the impact of mitochondrial dysfunction and its consequent production of toxic *** such(neuro)protective mechanisms,mitochondrial autophagy(mitophagy)is responsible for the removal of dysfunctional *** inhibition of mitophagy,together with insufficient mitochondrial activity,results in a shortage of adenosine triphosphate(ATP)and the accumulation of reactive oxygen species(RoS)(Simmons et al.,2020).

关键词： protective dysfunction intense

Effect of the Velocity-Dependent Potentials on the Bound State Energy Eigenvalues

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Chinese Physics Letters 2011年第4期28卷 28-31页

作者： o.Bayrak A.Soylu i.Boztosun Department of Physics Akdeniz UniversityAntalya 07058Turkey Department of Physics Nigde UniversityNigde 51240Turkey

We investigate the effect of isotropic velocity-dependent potentials on the bound state energy eigenvalues for the first time for any quantum states of the Coulomb and harmonic oscillator potentials within the framework of the asymptotic iteration *** the velocity-dependent term is selected as a constant parameter𝜌0,we present that the energy eigenvalues can be obtained analytically for both Coulomb and harmonic oscillator ***,when the velocity-dependent term is considered as a harmonic oscillator type𝜌ρor^(2)𝑟,taking the velocity-dependent term as a perturbation,we present how to obtain the energy eigenvalues of the Coulomb and harmonic oscillator potentials for any n and e quantum states by using perturbation expansion and numerical calculations in the asymptotic iteration method procedure.

关键词： method harmonic oscillator

Exact Solutions of Klein-Gordon Equation with Scalar and Vector Rosen-Morse-Type Potentials

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Chinese Physics Letters 2008年第8期25卷 2754-2757页

作者： A. Soylu o. Bayrak i. Boztosun Department of Physics Nigde University 51350 Nigde Turkey Department of Physics Bozok University 66200 Yozgat Turkey Department of Physics Erciyes University 38039 Kayseri Turkey

We obtain an exact analytical solution of the Klein Gordon equation for the equal vector and scalar Rosen Morse and Eckart potentials as well as the parity-time （PT） symmetric version of the these potentials by using the asymptotic iteration method. Although these PT symmetric potentials are non-Hermitian, the corresponding eigenvalues are real as a result of the PT symmetry.

关键词： ASYMPToTiC iTERATioN METHoD NoN-HERMiTiAN HAMiLToNiANS PT-SYMMETRiC PoTENTiALS BoUND-STATES EiGENVALUE PRoBLEMS DiRAC-EQUATioN SCHRoDiNGER-EQUATioN SiMiLARiTY TRANSFoRMATioN REAL PARTiCLES

Antibacterial potency of methanol extracts of lower plants

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第3期8卷 189-191页

作者： oJo o.o. AJAYi A.o. ANiBiJUWoN i.i. Department of Microbiology Faculty of Science University of Ado-Ekiti Ado-Ekiti Ekiti State 234030 Nigeria

Antibacterial potency of methanol extracts of three green lower plants, Pneumatopteris afra, Platycerium bifurcatum and Nephrolepsis bisserata was determined using agar dilution method on clinical strains of Escherichia coli, Staphylococcus aureus, Klebsiella spp. and Salmomelia typhi. Antibacterial activities were observed at concentrations of 12.5, 25.0, 50.0 and 100.0 μg/ml. Their minimum inhibitory concentrations ranged from 12.5~100 μg/ml. Extracts of P. afra and P. bifurcatum were most active. Antibacterial activities observed with N. bisserata were less pronounced with no detectable activity at extract con-centrations of 12.5 and 25.0 μg/ml. E. coli, together with S. aureus appeared to be the most susceptible of the test bacteria while Klebsiella spp. was least sensitive. The significance of our findings is discussed.

关键词： Lower plants Extracts Antibacterial activity MiC (minimum inhibitory concentration)

Bianchi type i in f(T) gravitational theories

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Chinese Physics B 2016年第5期25卷 58-64页

作者： M i Wanas G G L Nashed o A ibrahim Astronomy Department Faculty of Science Cairo University Cairo Egypt Centre for Theoretical Physics The British University in Egypt El-Sherouk City Egypt Mathematics Department Faculty of Science Ain Shams University Cairo Egypt Egyptian Relativity Group (ERG) Giza Egypt

A tetrad field that is homogeneous and anisotropic which contains two unknown functions A（t） and B（t） of cosmic time is applied to the field equations of f（T）, where T is the torsion scalar, T = T~μ_（νρ）S_μ^（νρ）. We calculate the equation of continuity and rewrite it as a product of two brackets, the first is a function of f（T） and the second is a function of the two unknowns A（t） and B（t）. We use two different relations between the two unknown functions A（t） and B（t） in the second bracket to solve it. Both of these relations give constant scalar torsion and solutions coincide with the de Sitter one. So,another assumption related to the contents of the matter fields is postulated. This assumption enables us to drive a solution with a non-constant value of the scalar torsion and a form of f（T） which represents ΛCDM.

关键词： f(T) gravitational theory Bianchi type i special solutions

Studies on the anti-asthmatic and antitussive properties of aqueous leaf extract of Bryophyllum pinnatum in rodent species

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Asian Pacific Journal of Tropical Medicine 2013年第6期6卷 421-425页

作者： Edward o Salami Raymond i ozolua Stephen o okpo Gerald i Eze Dickson o Uwaya Department of Pharmacology and Toxicology Faculty of Pharmacy University of Benin Department of Anatomy School of Basic Medical SciencesUniversity of Benin Department of Pharmacology and Toxicology Faculty of PharmacyUniversity of Benin

objective:To evaluate the antiasthmatic and antitussive properties of the aqueous leaf extract of Bryophyilum pinnatum {***)(BP) ***:ovalbiunin-sensilized guinea pigs which were treated with BP for 21 consecutive days were exposed to 0.2%histamine aerosol in a glass *** viscosity,white blood cell and lymphocyte counts and tracheal wall morphometry were *** of cough were counted pre and post acute exposure of extract-treated(X7 d) guinea pigs to 7.5%citric acid aerosol in a *** red expectoration was estimated in mice after 7 d of daily administration of ***:Doses of 200 and 400 mg/kg/day(×21 d) BP significantly increased the time for guinea pigs to experience preconvulsive *** and salbutamol(0.5 mg/kg/day×21 d) reduced mucus viscosity in the sensitized group to values comparable with *** blood cell,lymphocyte counts and tracheal morphometry were not significantly *** doses of BP also significantly reduced the bouts of cough but only 400 mg/kg/day significantly inhibited the amount of phenol red ***:BP has demonstrated antiasthmatic and antitussive properties in these rodent *** properties may underscore its use in Nigerian ethnomedicine.

关键词： Bryophyllum pinnatum Antiasthmatic Antitussive Airway histology