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Multiverse Theory

Journal of Energy and Power Engineering 2018年第4期12卷 186-191页

作者： Khaled Moh＇dKhalaf）suleiman Alnobani（Chemical Engineering Jordan University of Science and TechnologyIrbid 2211OJordan

In this paper it is answered why the imaginary number is not used in the equal operator presented earlier by Ahiobani. The life criterion is presented here. The concept of energy conservation is assumed to be held within the gates between verses. The Hamiltonian for entry is the some when exiting, this concept is discussed. Within this concept suvat equations are discussed. Ahiobani＇ s generalized factor is presented instead of Planck＇s constant as proportionality factor between energy and frequency. A closer physical look for multiverse mathematics as tensor product is performed.

关键词： Time mass multiverse.

Weed Species Composition in Paddy Field of Usur Town,Bade Local Government,Yobe State,Nigeria

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Journal of Botanical Research 2023年第2期5卷 29-48页

作者： Mohammed Alhaji Bello Halima Mohammed Abba Umar Mohammed Department of Biological Science Education School of SciencesUmar Suleiman College of Education GashuaP.M.B.02Yobe StateNigeria Department of Botany Faculty of SciencesGombe State UniversityGombe State760211Nigeria Department of Agricultural Science Education School of Vocational EducationUmar Suleiman College of Education GashuaP.M.B.02Yobe StateNigeria

Farmers are eager to know the various types of weeds in paddy *** will help in choosing the best weed management practice for effective weed control as well as reducing rice yield *** objectives of the study are to identify the weeds species affecting the rice field,to assess the composition of weeds species,to classify the weed species into different families,genera,species,common names,Hausa names,lifecycles,life forms,native/exotic species,propagation and uses,and to determine the dominant weed *** vegetation surveys were *** observed were photographed,and prepared as herbarium *** key manuals and checklists were utilized for weed identification and later organized using the Angiosperm Phylogeny Group(APG)classification system.A total number of 72 plants species distributed within 16 families and 50 genera were *** annuals(66.67%)were the dominant weed followed by perennials(33.33%)while biennials were the *** broad leaves were the dominant weed(44.61%)identified followed by Poaceae(27.7%)and Sedges(11.11%).Results obtained from this study could be useful in choosing the best management practice and in making a decision on the choice of herbicides and directing research towards improved weed control measures.

关键词： Rice Dominant weeds Exotic species Native species Weed classification

Heavy Metals Contents of Municipal Solid Waste Dumpsites in Potiskum, Yobe State Nigeria

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Journal of Environmental Protection 2020年第9期11卷 709-717页

作者： G. D. Ibrahim E. O. Nwaichi G. O. Abu Centre for Occupational Health Safety and Environment University of Port Harcourt Port Harcourt Nigeria Department of Preliminary Studies Umar Suleiman College of Education Gashu’a Nigeria Department of Biochemistry Faculty of Science University of Port Harcourt Port Harcourt Rivers State Nigeria Department of Microbiology Faculty of Science University of Port Harcourt Port Harcourt Rivers State Nigeria

The concentrations of As, Cd, Cr, Cu, Ni, Pb, Fe and Zn in selected dumpsites in Potiskum were determined with Buck Scientific 210VGB Atomic Absorption Spectrometer (AAS) AVG 210. One-way ANOVA was deployed at p ·kg-1) of studied heavy metals in Potiskum dumpsites ranged from 0.108 ± 0.02 - 262.536 ± 0.68 with pattern of accumulation Pb (262.536 ± 0.02) > Zn (183.369 ± 0.58) > Fe (159.453 ± 0.50) > Cu (111.382 ± 0.62) > Cr (43.523 ± 0.36) > Ni (6.419 ± 0.26) > Cd (0.679 ± 0.01) > As (0.108 ± 0.02) mg·kg-1. The concentrations of As, Cr, Ni, Fe and Zn fell below the WHO standards while those of Pb, Cd and Cu were above set limits by WHO. High acidity corresponds markedly with high levels of Cd, Cu, Cr and Zn and requires urgent attention as this trend is capable of groundwater contamination that will cause public health concern in affected areas.

关键词： Heavy Metals Concentration Uptake Pattern Dumpsites Municipal Solid Wastes

Enhanced dielectric and optical properties of nanoscale barium hexaferrites for optoelectronics and high frequency application

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Chinese Physics B 2018年第12期27卷 517-525页

作者： J Mohammed A B suleiman Tchouank Tekou Carol T H Y Hafeez Jyoti Sharma Pradip K Maji Sachin Godara Kumar A K Srivastava Department of Physics School of Chemical Engineering and Physical Sciences Lovely Professional University Department of Physics Faculty of Science Federal University Dutse SRM Research Institute SRM University Department of Polymer and Processing Engineering Indian Institute of Technology Roorkee Department of Chemistry Guru Nanak Dev University

M-type barium hexaferrites with chemical composition Ba1-xDyxFe12-yCryO19(x = 0.0, 0.1, 0.2, and y =0.0, 0.4, 0.5) were synthesized via sol–gel auto-combustion method. The samples were pre-sintered at 400℃ for 3 h and sintered at 950℃ for 5 h. The changes in the structural, dielectric, and optical properties were studied after the substitution of Dy3+and Cr3+ions. X-ray diffraction(XRD) analysis confirms the formation of single phase hexaferrites with the absence of secondary phase. FTIR analysis gives an idea of the formation of hexaferrites with the appearance of two peaks at 438 cm-1and 589 cm-1. The field emission scanning electron micrographs(FESEM) show a combination of crystallites with large shapes close to hexagonal platelet-like shape and others with rice or rod-like shapes, whereas EDX and elemental analysis confirm the stoichiometry of prepared samples. The calculated band gap from UV-vis NIR spectroscopy spectra was found to decreases with increase in Dy3+–Cr3+substitution. The dielectric properties were explained on the basis of Maxwell–Wagner model. Enhancement of dielectric constant at higher frequencies was observed in all the samples. Low dielectric loss is also observed in all the samples and Cole–Cole plot shows that grain boundary resistance(Rgb) contribute most to the dielectric properties. The prepared samples exhibit properties that could be useful for optoelectronics and high frequency application.

关键词： Maxwell–Wagner model dielectric constant Cole–Cole plot optical band-gap

A genetic algorithm based lookup table approach for optimal stepping sequence of open-loop stepper motor systems

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控制理论与应用（英文版） 2013年第1期11卷 35-41页

作者： suleiman BANIHANI Khalid AL-WIDYAN Ahmad AL-JARRAH Mohammad ABABNEH Mechatronics Engineering Department The Hashemite University

Stepper motor driven systems are widely used in industrial applications. They are mainly used for their low cost open-loop high performance. However, as dynamic systems need to be increasingly faster and their motion more precise, it is important to have an open-loop system which is accurate and reliable. In this paper, we present a novel technique in which a genetic algorithm （GA） based lookup table approach is used to find the optimal stepping sequence of an open-loop stepper motor system. The optimal sequence objective is to minimize residual vibration and to accurately follow trajectory. A genetic algorithm is used to find the best stepping sequence which minimizes the error and improves the system performance. Numerical simulation has showed the effectiveness of our approach to improve the system performance for both position and velocity. The optimized system reduced the residual vibration and was able to follow the trajectory with minimal error.

关键词： Stepper motor Open-loop Genetic algorithm Optimal Stepping sequence Control

Compact Multibeam Array with Miniaturized Butler Matrix for 5G Applications

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Computers, Materials & Continua 2022年第7期72卷 925-937页

作者： suleiman A.Babale Muhammad K.Ishfaq Ali Raza Jamal Nasir Ahmad Fayyaz Umer Ijaz Department of Electrical Engineering Bayero UniversityKanoNigeria Department of Electrical Engineering Government College University FaisalabadPakistan Department of Electrical and Computer Engineering COMSATS University IslamabadAbbottabad CampusPakistan

This paper presents the design and implementation of a miniaturized beam steering network that produces broadside beams when it is fed with a compact antenna *** Matrix(BM)was used as the beam steering *** was completely built from a miniaturized 3 dB hybrid-couplers in planar microstrip *** was configured by feeding the BM with a Planar Inverted-E Antenna(PIEA)array separated at 0.3λas against the 0.5λ*** makes the BM produce a major radiation pattern at the *** from the miniaturization,no modification was made from the BM ***,employing effective mutual coupling reduction techniques helped to design the compact PIEA *** validity of this BM based multibeam PIEA array was demonstrated by comparing the simulation results of the reflection coefficients,transmissions coefficients and the radiation pattern with *** measurement results showed good agreement with simulations.

关键词： Beam steering compact butler matrix grating lobe and mutual coupling PIEA array

Histopathological patterns of ovarian lesions:A study of 161 cases

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BIOCELL 2019年第3期43卷 175-181页

作者： ABDULKAREEM YOUNIS suleiman INTISAR SALIM PITY MOHAMMED R MOHAMMED BASHAR ABDULJABAR HASSAWI College of Medicine University of MosulMosulIraq College of Medicine University of DuhokDuhokIraq

Ovarian lesions are commonly encountered pathologies that cannot be categorized *** diagnosis is of great importance for therapeutic and prognostic *** gives accurate diagnosis in most *** cases need supportive tests like ***:to study the histomorphological diversity of ovarian lesions,their age and location in North of Iraq(Mosul and Duhok).Patients and methods:In the period extended from January 2008 to December 2011,161 cases of ovarian lesions were collected from pathology departments in Azadi General Hospital“Duhok”and Al-Jamhori Teaching Hospital“Mosul”.Automated tissue processor was used for histologic study and Streptavidin-biotin method on paraffin sections was applied for ***:There was a wide age range,most being in the third *** right ovaries were more common involved than the ***,58(36%)cases were non-neoplastic and 103 were neoplastic including 90(55.9%)benign and 9(5.6%)malignant *** remaining 4(2.4%)cases comprised borderline serous ***:Most ovarian lesions were functional non-neoplastic followed by benign *** from few cases,diagnosis was merely histological without any ancillary test.

关键词： Histopathology Immunohistochemistry Ovarian lesions

Effect of Inclined Water Jets on Tensile Strength of Bicomponent Hydroentangled Nonwoven Fabrics

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Journal of Donghua university(English Edition) 2007年第3期24卷 413-418,423页

作者： MBWANA suleiman Ndaro 靳向煜陈廷郁崇文 College of Textiles Donghua University

The effects of inclined water jets on bicomponent hydroentangled fabrics were investigated. The PET/COPET and PA6/PET hydroentangled fabrics were made by using designed inclined water jet apparatus. Effects of basis weight, water jets inclination angle and water jet pressure were discussed. The comparison was made on the average tensile strength of fabrics made by perpendicular water jets （0^o inclination angle） and inclined water jets of 20^o with pressure levels of 3 bars and 7 bars. It was found that increases of water jet pressure, the fabrics tensile strength were increased. Furthermore, increases of water jets inclination angle, fabric tensile strength of 60 g/m^2 fabrics decreased while for 100 g/m^2 fabrics tensile strength increased.

关键词： inclined wuter jets tensile strength h ydroentangledfabrics pie segmented fibers islands - in - the - sea fibers

Topography Modeling of Surface Grinding Based on Random Abrasives and Performance Evaluation

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Chinese Journal of Mechanical Engineering 2024年第5期37卷 126-148页

作者： Yanbin Zhang Peng Gong Lizhi Tang Xin Cui Dongzhou Jia Teng Gao Yusuf suleiman Dambatta Changhe Li Key Lab of Industrial Fluid Energy Conservation and Pollution Control Qingdao University of TechnologyMinistry of EducationQingdao 266520China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China College of Mechanical Engineering and Automation Liaoning University of TechnologyJinzhou 121001China Mechanical Engineering Department Ahmadu Bello UniversityZaria 810106Nigeria

The surface morphology and roughness of a workpiece are crucial parameters in grinding *** prediction of these parameters is essential for maintaining the workpiece’s surface ***,the randomness of abrasive grain shapes and workpiece surface formation behaviors poses significant challenges,and accuracy in current physical mechanism-based predictive models is *** address this problem,by using the random plane method and accounting for the random morphology and distribution of abrasive grains,this paper proposes a novel method to model CBN grinding wheels and predict workpiece surface ***,a kinematic model of a single abrasive grain is developed to accurately capture the three-dimensional morphology of the grinding ***,by formulating an elastic deformation and formation model of the workpiece surface based on Hertz theory,the variation in grinding arc length at different grinding depths is ***,a predictive model for the surface morphology of the workpiece ground by a single abrasive grain is *** model integrates the normal distribution model of abrasive grain size and the spatial distribution model of abrasive grain positions,to elucidate how the circumferential and axial distribution of abrasive grains influences workpiece surface ***,by integrating the dynamic effective abrasive grain model,a predictive model for the surface morphology and roughness of the grinding wheel is *** examine the impact of changing the grit size of the grinding wheel and grinding depth on workpiece surface roughness,and to validate the accuracy of the model,experiments are *** indicate that the predicted three-dimensional morphology of the grinding wheel and workpiece surfaces closely matches the actual grinding wheel and ground workpiece surfaces,with surface roughness prediction deviations as small as 2.3%.

关键词： Surface topography prediction Grinding Grinding wheel model Random plane method