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Antioxidant and antihyperlipidemic activity of Costus speciosus against atherogenic diet-induced hyperlipidemia in rabbits

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Journal of Integrative Medicine 2019年第3期17卷 181-191页

作者： Fatma Mohamed Hussein Shediwah khalid mohammed naji Hussein Saleh Gumaih Fatima A Alhadi Amani Lutf Al-Hammami Myrene Roselyn D'Souza Department of Biology Faculty of ScienceSana'a University Department of Chemistry Faculty of ScienceSana'a University Chemical Ecology Department of BiologyUniversity of Konstanz Department of Biochemistry Mount Carmel College

Objective: An extract of Costus speciosus(CSE), a herb widely used in folk medicine, was evaluated for its antioxidant, antihyperlipidemic and ameliorating effects on histopathological changes in atherogenic ***: Twenty-four male rabbits(Oryctolagus cuniculus) were divided into 4 groups. Three groups were fed a diet containing 3% saturated fat and 1.3% cholesterol for 40 d. One of these was sacrificed on the 40 th day and was called the pathogenic(P) group; the other two groups received treatment for another 30 d as follows: one received 0.8 g/(kgád) of CSE and the other was given 0.01 g/(kgád) of simvastatin. The normal group was sacrificed on the 70 th day and used as a ***: CSE showed radical-scavenging ability. Administration of CSE for a 30-day period resulted in a significant decrease in total cholesterol, triacylglycerol, low-density lipoprotein and aspartate aminotransferase compared to the P group, while levels of hemoglobin, packed corpuscular volume and red blood cells were elevated. With respect to studies performed on the heart, a decrease in malondialdehyde and an increase in reduced glutathione were noted. Total protein increased in the liver, heart and aorta after treatment with CSE and also a marked improvement in histopathological parameters was ***: The present findings indicate that the C. speciosus rhizome possesses antiatherogenic and antioxidant properties which may provide protective effects against oxidative stress in atherosclerotic rabbits.

关键词： Antioxidants Atherosclerosis Costus speciosus Lipid profile Myocardial infraction Simvastatin

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Decoding molecular mechanisms:brain aging and Alzheimer's disease

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Neural Regeneration Research 2025年第8期20卷 2279-2299页

作者： Mahnoor Hayat Rafay Ali Syed Hammad Qaiser Mohammad Uzair khalid Al-Regaiey Roaa Khallaf Lubna Abdullah mohammed Albassam Imdad Kaleem Xueyi Wang Ran Wang Mehwish SBhatti Shahid Bashir Atta-ur-Rahman School of Applied Biosciences(ASAB) National University of Sciences and Technology(NUST)IslamabadPakistan Department of Biotechnology Quaid-i-Azam UniversityIslamabadPakistan Department of Biological Sciences Faculty of Basic&Applied SciencesInternational Islamic University Islamabad(IIUI)IslamabadPakistan Department of Bioengineering King Fahd University of Petroleum and MineralsDhahranSaudi Arabia Department of Physiology College of MedicineKing Saud UniversityRiyadhSaudi Arabia Department of Neurology Neuroscience CenterKing Fahad Specialist HospitalDammamSaudi Arabia Department of Mental Health Neuroscience CenterKing Fahad Specialist HospitalDammamSaudi Arabia Department of Biosciences Commission on Science and Technology for Sustainable Development in the South(COMSATS University)IslamabadPakistan Department of Psychiatry The First Hospital of Hebei Medical UniversityShijiazhuangHebei ProvinceChina Mental Health Institute of Hebei Medical University ShijiazhuangHebei ProvinceChina Department of Neurobiology and Behavior University of CaliforniaIrvineCAUSA Neuroscience Center King Fahad Specialist Hospital DammamDammamSaudi Arabia

The complex morphological,anatomical,physiological,and chemical mechanisms within the aging brain have been the hot topic of research for *** aging process alters the brain structure that affects functions and cognitions,but the worsening of such processes contributes to the pathogenesis of neurodegenerative disorders,such as Alzheimer's *** these observable,mild morphological shifts,significant functional modifications in neurotransmission and neuronal activity critically influence the aging *** these changes is important for maintaining cognitive health,especially given the increasing prevalence of age-related conditions that affect *** review aims to explore the age-induced changes in brain plasticity and molecular processes,differentiating normal aging from the pathogenesis of Alzheimer's disease,thereby providing insights into predicting the risk of dementia,particularly Alzheimer's disease.

关键词： Alzheimer’s disease brain aging cognitive health dementia molecular mechanisms neuronal activity neuroplasticity neurotransmission

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Detecting Driver Distraction Using Deep-Learning Approach

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Computers, Materials & Continua 2021年第7期68卷 689-704页

作者： khalid A.AlShalfan mohammed Zakariah College of Computer and Information Sciences Al-Imam Muhammad Ibn Saud Islamic UniversityRiyadh11564Saudi Arabia College of Computer and Information Science King Saud UniversityRiyadh11442Saudi Arabia

Currently,distracted driving is among the most important causes of traffic ***,intelligent vehicle driving systems have become increasingly ***,interest in driver-assistance systems that detect driver actions and help them drive safely has *** these studies,although some distinct data types,such as the physical conditions of the driver,audio and visual features,and vehicle information,are used,the primary data source is images of the driver that include the face,arms,and hands taken with a camera inside the *** this study,an architecture based on a convolution neural network(CNN)is proposed to classify and detect driver *** efficient CNN with high accuracy is implemented,and to implement intense convolutional networks for large-scale image recognition,a new architecture was proposed based on the available Visual Geometry Group(VGG-16)*** proposed architecture was evaluated using the StateFarm dataset for driver-distraction *** dataset is publicly available on Kaggle and is frequently used for this type of *** proposed architecture achieved 96.95%accuracy.

关键词： Deep learning driver-distraction detection convolution neural networks VGG-16

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Investigating the influence of gamma ray energies and steel fiber on attenuation properties of reactive powder concrete

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Nuclear Science and Techniques 2017年第10期28卷 113-120页

作者： Shatha D.mohammed Wasan Z.Majeed Nesreen B.naji Nada Mahdi Fawzi Department of Civil College of EngineeringUniversity of BaghdadBaghdadIraq Department of Physics College of ScienceUniversity of BaghdadBaghdadIraq

The effect of gamma ray energies and volume ratio of micro steel fiber(1 and 1.5%) on attenuation properties of reactive powder concrete(70 MPa compressive strength) was investigated. Different characteristics have been considered such as linear attenuation coefficient,mass attenuation coefficient, and half-value *** iodide crystal with a gamma ray spectrometer and collimated beam of gamma ray has been implemented to perform the experimental test. Three sources(Cs-137, Co-60, and Bi-207) with energies of(0.662, 1.17 1.33, 0.569,and 1.063) MeV were adopted in the test. The results obtained indicated that mass attenuation coefficient is proportioned inversely with gamma ray energies and directly with a volume ratio of micro steel fiber. The linear attenuation coefficient and half-value thickness of the tested samples have been calculated and discussed. The obtained results showed that increasing the volume ratio of steel fiber has modified the adequacy of the reactive powder concrete as a shielding element since it increases the density and reduces the half-value thickness.

关键词：活性粉末混凝土衰减特性射线能量钢纤维性能影响线性衰减系数质量衰减系数纤维体积比

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Silicon quantum dots-based fluorescent sensor for the detection of cobalt with high sensitivity and selectivity

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Chinese Chemical Letters 2024年第1期35卷 451-455页

作者： Ebtihaj mohammed Sullam khalid mohammed Adam Juanjuan Liu Hongli Chen Jianxi Xiao State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Department of Chemistry Faculty of EducationUniversity of KordofanEl Obeid 51111Sudan

Fluorescent silicon quantum dots(Si QDs)were hydrothermally synthesized from a mixture of 3(2-aminoethylamino)propyl(dimethoxymethylsilane)(AEAPDMMS)and poly(vinylpyrrolidine)(PVP).The resulting Si QDs exhibited good water solubility and high *** the optimized conditions,the probe revealed an excellent linear fluorescence quenching effect on Co2+ranging from 1μmol/L to 120μmol/L with a limit of detection of 0.37μmol/L(based on 3 s/k).The quenching mechanism was studied,showing that static quenching(SQE)causes the main ***,the test paper based on Si QDs was prepared,which is cost-effective,high sensitivity,good selectivity,easy to use and show excellent anti-interference *** method was applied to analyze the content of Co2+in environmental water samples with satisfying results.

关键词： Silicon quantum dots Fluorescence Poly(vinylpyrrolidine) Test paper Cobalt detection

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Robust state feedback for uncertain 2-D discrete switched systems in the Roesser model

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Journal of Control and Decision 2021年第3期8卷 331-342页

作者： khalid Badie mohammed Alfidi Fernando Tadeo Zakaria Chalh Engineering Systems and Applications LaboratoryNational School of Applied SciencesFezMorocco Institute of Sustainable Processes and Industrial Engineering SchoolUniversity of ValladolidValladolidSpain

The design of robust H_(∞)controllers is considered here for a class of two-dimensional(2-D)discrete switched systems described by the Roesser model with polytopic *** focuses on the design of a switched state feedback controller,which guarantees the robust asymptotic stability and a prescribedH_(∞)performance for the closed-loop *** using multiple parameter-dependent Lyapunov functionals,and introducing some switched free-weighting matrices,a new sufficient condition for the robust H_(∞)performance analysis of uncertain 2-D discrete switched systems is ***,the design of switched state feedback controller is proposed in terms of linear matrix inequalities(LMIs).Illustrative examples are given to illustrate the effectiveness of the developed theoretical results.

关键词： 2-D discrete switched systems polytopic uncertainties robust H∞control linear matrix inequalities(LMIs)

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N1-soliton solution for Schrodinger equation with competing weakly nonlocal and parabolic law nonlinearities

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Communications in Theoretical Physics 2020年第6期72卷 129-135页

作者： mohammed O Al-Amr Hadi Rezazadeh khalid K Ali Alper Korkmazki Department of Mathematics College of Computer Sciences and MathematicsUniversity of MosulMosul 41002Iraq Faculty of Engineering Technology Amol University of Special Modern TechnologiesAmolIran Mathematics Department Faculty of ScienceAl-Azhar UniversityNasr-CityCairoEgypt Nord StaBe 9 WeimarGermany

The nonlocal nonlinear Schr?dinger equation(NNLSE)with competing weakly nonlocal nonlinearity and parabolic law nonlinearity is explored in the current work.A powerful integration tool,which is a modified form of the simple equation method,is used to construct the dark and singular 1-soliton *** is shown that the modified simple equation method provides an effective and powerful mathematical gadget for solving various types of NNLSEs.

关键词： Schrodinger equation soliton integrability modified simple equation method

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Reconstructing Real Object Appearance with Virtual Materials Using Mobile Augmented Reality

Reconstructing Real Object Appearance with Virtual Materials...

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作者： AL-HEJRI AISHA mohammed ABDO naji 湖南大学

学位级别：硕士

将虚拟对象加载到反映现实环境的AR视图中并不是一件非常困难的事情。但是如何使AR视图中的虚拟物体表面看起来更真实则需要更多的努力。比如,虚拟纹理应该看起来完全与真实物体贴合,需要更准确地跟踪目标物体。同时,加载的虚拟材质应... 详细信息

将虚拟对象加载到反映现实环境的AR视图中并不是一件非常困难的事情。但是如何使AR视图中的虚拟物体表面看起来更真实则需要更多的努力。比如,虚拟纹理应该看起来完全与真实物体贴合,需要更准确地跟踪目标物体。同时,加载的虚拟材质应真实反映它们所在的实际环境的光照和阴影条件。在本文中,我们介绍了一种改进的方法,用于增强现实应用中环境照明的实时光估计,跟踪物理对象的运动,并使相应的虚拟对象反映实际环境的光照和阴影。首先,我们提出了一种估计AR场景中光线的有效方法,方法是在不同场景上从RGB-D图像的输入中训练一次深度神经网络,以确定最亮光线的方向。该研究依赖于通过独立于相机位置的神经网络估计光源,然后在光估计过程之后计算到真实世界空间的变换。这个问题是通过计算在坐标空间中与相机位置对齐的最亮光源来解决的。因此,最亮光的方向是通过坐标系中的相对角度来模拟的。为了使光照估计不受相机位置的影响,这些角度是从相机的坐标空间中计算出来的。最亮光方向的坐标表示被转换为向量,用于在AR系统中进行渲染。由于训练和测试用例中真实数据的在手机上的性能不够理想,所提出的神经网络仅在合成数据上进行训练。其次,我们尝试了不同的方法来检测和跟踪不同类型的真实物体(平面、简单几何图形和复杂几何图形),以在这些表面上可视化虚拟材料,其中虚拟材料采用我们提出的光估计方法来获取真实位置的条件照明、反射和阴影。我们的光估计方法通过对三种真实物体的实验进行了测试。结果表明,与其他工作相比,我们的方法在检测精度、跟踪精度、材料的真实可视化、匹配真实阴影和光照条件方面取得了比较好的效果。

关键词：增强现实深度学习光估计 RGB-D图像

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Optimized Evaluation of Mobile Base Station by Modern Topological Invariants

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Computers, Materials & Continua 2023年第1期74卷 363-378页

作者： khalid Hamid Muhammad Waseem Iqbal Muhammad Usman Ashraf Ahmed mohammed Alghamdi Adel A.Bahaddad khalid Ali Almarhabi Department of Computer Science Superior UniversityLahore54000Pakistan Department of Software Engineering Superior UniversityLahore54000Pakistan Department of Computer Science GC Women UniversitySialkot53310Pakistan Department of Software Engineering College of Computer Science and EngineeringUniversity of Jeddah21493Saudi Arabia Department of Information System Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia Department of Computer Science College of Computing in Al-QunfudahUmm Al-Qura UniversityMakkah24381Saudi Arabia

Due to a tremendous increase in mobile traffic,mobile operators have started to restructure their networks to offload their *** directions will lead to fundamental changes in the design of future Fifthgeneration(5G)cellular *** the formal reason,the study solves the physical network of the mobile base station for the prediction of the best characteristics to develop an enhanced network with the help of graph *** number that can be uniquely calculated by a graph is known as a graph *** the last two decades,innumerable numerical graph invariants have been portrayed and used for correlation *** any case,no efficient assessment has been embraced to choose,how much these invariants are connected with a network *** paper will talk about two unique variations of the hexagonal graph with great capability of forecasting in the field of optimized mobile base station topology in setting with physical *** K-banhatti sombor invariants(KBSO)and Contrharmonic-quadratic invariants(CQIs)are newly introduced and have various expectation characteristics for various variations of hexagonal graphs or *** the hexagonal networks are used in mobile base stations in layered,forms called *** review settled the topology of a hexagon of two distinct sorts with two invariants KBSO and CQIs and their reduced *** deduced outcomes can be utilized for the modeling of mobile cellular networks,multiprocessors interconnections,microchips,chemical compound synthesis and memory interconnection *** results find sharp upper bounds and lower bounds of the honeycomb network to utilize the Mobile base station network(MBSN)for the high load of traffic and minimal traffic also.

关键词： Hexagonal networks k-banhatti sombor invariants maple network graph artificial intelligence contraharmonic-quadratic invariants honeycomb

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Microwaves spark emission spectroscopy for the analysis of cations:A simple form of atomic emission spectroscopy

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Chinese Chemical Letters 2011年第9期22卷 1084-1086页

作者： Zahid Hussain khalid mohammed Khan Khadim Hussain Sadam Hussain Shahnaz Perveen Department of Chemistry Abdul Wali Khan UniversityMardanPakistan H.E.J.Research Institute of Chemistry International Center for Chemical and Biological SciencesUniversity of KarachiKarachi 75270Pakistan Department of Chemistry Hazara UniversityMansehraPakistan Department of Electronics Quaid-I-Azam UniversityIslamabadPakistan PCSIR Laboratories Complex Shahrah-e-Dr.Salimuzzaman SiddiquiKarachi 75280Pakistan

A novel method for the cation analysis was investigated. The analysis is based on the sparking of the salts of metals in a microwave oven after placing in a graphite cell. The graphite cell absorbs microwaves and produces high temperature which converts the salt into light emitting species. The colour of light was found to dependent on the nature of cation, however, the intensity of the emitted light was found to be depending upon the form and shape of the graphite assembly in addition to the concentration of the salt. This communication presents explanation for all these observations and for the systematic and quantitative analysis using microwave spark emission technique.

关键词： Microwave spark Cation analysis Spark colour Graphite cell Atomic emission

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