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International Journal of Biomathematics 2019年第7期12卷 71-94页

作者： mohamed abd allah ei-hadidy Alaa A.Alzulaibani Mathematics and Statistics Department College of Science Taibah UniversityYanbuKingdom of Saudi Arabia Mathematics Department Faculty of Science Tanta UniversityTantaEgypt

We present a statistical distribution of a nanorobot motion inside the *** distribution is like the distribution of A and B particles in continuous time random walk scheme inside the fAuid reactive anomalous transport with stochastic waiting time depending on the Gaussian distribution and a Gaussian jump length which is detailed in Zhang and Li[***,Published Online with doi:10.1007/s10955-018-2185-8,2018].Rather than estimating the length parameter of the jumping distance of the nanorobot,we normalize the Probability Density Function(PDF)and present some reliability properties for this *** addition,we discuss the truncated version of this distribution and its statistical properties,and estimate its length *** use the estimated distance to study the conditions that give a finite expected value of the first meeting time between this nanorobot in the case of nonlinear flow with independent d-dimensional Gaussian jumps and an independent d-dimensional CD4 T Brownian cell in the blood(d-space)to prevent the HIV virus from proliferating within this cell.

关键词： Stochastic waiting time CD4 T Brownian cell nanorobot distribution uni-formly integrable functions

Optimal searching for a Helix target motion

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Science China Mathematics 2015年第4期58卷 749-762页

作者： mohamed abd allah El-hadidy Department of Mathematics Faculty of Science Tanta University

This paper discusses a search problem for a Helix target motion in which any information of the target position is not available to the searchers. There exist three searchers start searching for the target from the origin. The purpose of this paper is to formulate a search model and finds the conditions under which the expected value of the first meeting time between one of the searchers and the target is finite. Also, the existence of the optimal search plan that minimizes the expected value of the first meeting time is shown. Furthermore,this optimal search plan is found. The effectiveness of this method is illustrated by using an example with numerical results.

关键词： Helix motion optimal search plan first meeting time probability measure multiobjective nonlinear programming problem

Searching for the Random Walking microorganism cells

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International Journal of Biomathematics 2019年第6期12卷 43-54页

作者： mohamed abd allah El-hadidy Hamdy MAbou-Gabalt Mathematics Statistics DepartmentCollege of ScienceTaibah UniversityYanbuKingdom of Saudi Arabia Mathematics Department Faculty of ScienceTanta UniversityTaniaEgypt

In this paper,we present a complex cooperative search technique for finding the Random Walking microorganism cells on one of n-intersect real lines at the *** have 2n unit speed searchers starting together from the ***,proving the existence of a finite search plan,we are discussing the existence of optimality for this search plan which minimizes the expected value of the first meeting time between one of the searchers and the microorganism cells.

关键词： Cooperative search technique one-dimensional Random Walking microor ganism cells optimal search plan.

Synthesis, Structural Characterization, and Antimicrobial Activities of Mn（II）, Co（II）, Ni（II）, Cu（ll） and Zn（II） Complexes of Triazole-based Azodyes

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Chinese Journal of Chemistry 2011年第6期29卷 1124-1132页

作者： Khedr, abdalla M. Gaber, mohamed abd ei-Zaher, Eman H. Chemistry Department Faculty of Science Tanta University Tanta Egypt Botany Department Faculty of Science Tanta University Tanta Egypt

The synthesis and characterization of new transition metal complexes of Mn（ll）, Co（II）, Ni（II）, Cu（II） and Zn（II） with 3-（2-hydroxynaph-l-ylazo）-1,2,4-triazole （HL1） and 3-（2-hydroxy-3-carboxynaph-l-ylazo）-1,2,4-triazole （HL2） have been carried out. Their structures were confirmed by elemental analyses, thermal analyses, spectral and magnetic data. The IR and 1H NMR spectra indicated that HL1 and HL2 coordinated to the metal ions as bidentate monobasic ligands via the hydroxyl O and azo N atoms. The UV-Vis, ESR spectra and magnetic moment data revealed the formation of octahedral complexes [MnL1（AcO）（H2O）3] （1）, [CoL1（AcO）（HzO）3]·H2O （2）, [MnL2- （AcO）（H20）3] （6） and [CoL2（AcO）（H2O）3] （7）, [NiL1（AcO）（H2O）] （3）,[ZnLI（AcO）（HzO）]·H2O （5）, [NiL2- （AcO）（H2O）] （8）, [ZnL2（AcO）（H2O）]·H2O （10） have tetrahedral geometry, whereas [CuLI（AcO）（H2O）2] （4） and [CuL2（AcO）（H2O）2]·5H2O （9） have square pyramidal geometry.. The mass spectra of the complexes under ei-con- ditions showed the highest peaks corresponding to their molecular weights, based on the atomic weights of 55Mn, 59Co, 58Ni, 63Cu and 64Zn isotopes; besides, other peaks containing other isotopes distribution of the metal. Kinetic and thermodynamic parameters of the thermal decomposition stages were computed from the thermal data using Coats-Redfern method. HL2 and complexes 6--10 were found to have moderate antimicrobial activities against Staphylococcus＇ aureus （gram positive）, Escherichia coli （gram negative） and Salmonella sp bacteria, and antifungal activity against Fusarium oxysporum, Aspergillus niger and Candida albicans. Also, in most cases, metallation increased the activity compared with the free ligand.

关键词： analytical and inorganic chemistry triazole azodyes metal(II) chelates antimicrobial activities

Facile Synthesis of Naphtho[2,3-dJthiazoles, Naphtho[2,3-e]-[1,3,4]thiadiazines and Bis（naphtho[2,3-d]thiazolyl）copper（ll） Derivatives from Heteroylthiosemicarbazides

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Chinese Journal of Chemistry 2016年第8期34卷 814-822页

作者： Alaa A. Hassan Nasr K. mohamed Lamiaa E. abd ei-Haleem Stefan Brase Martin Nieger Chemistry Department Faculty of Science Minia University 61519 EI-Minia A. R. Egypt Institute of Organic Chemistry Karlsruhe Institute of Technology Fritz-Haber-Weg 6 76131 Karlsruhe Germany Laboratory of Inorganic Chemistry Department of Chemistry University of Helsinki P.O.Box55 (A. I. Virtasenaukio 1) 00014 Helsinki Finland

A one step synthesis protocol for the conversion of heteroylthiosemicarbazides and 2,3‐dichloro‐1,4‐naphthoquinone to naphtho[2,3‐ d ]thiazoles, naphtho[2,3‐ e ][1,3,4]thiadiazines as well as bis(naphtho[2,3‐ d ]thiazolyl)copper(II) derivatives is described. The products were conclusively confirmed by single crystal X‐ray analyses. A mechanism for the formation of the products is presented.

关键词： heteroylthiosemicarbazides 2,3‐dichloro‐1,4‐naphthoquinone naphtho[2,3‐d]thiazoles naphtho[2,3‐e]thiadiazines bis(naphtho[2,3‐d]thiazolyl)copper(II) derivatives

Removal and Stabilization of Hazardous Ions Using Dolomite Clay

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材料科学与工程（中英文B版） 2012年第8期2卷 442-451页

作者： mohamed abd El-samea ei-Nawawy Magda Salah ei-Dein Sayed Moustafa Farag Bakr Alaa Sayedabdel-Razek Ragab Mohasab abd-allah Marye Protection and Radiation Safety Department Hot Laboratory Center Atomic Energy Authority P.O. 13759 Cairo Egypt Chemistry Department Faculty of Science Al-Azhar University Cairo Egypt

Physico-Chemical and Biological Studies on Some Complexes of 5-Amino-3-Methylthio-lH-Pyrazol- 4-Carbonitrile

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材料科学与工程（中英文A版） 2012年第9期2卷 610-615页

作者： mohamed abd ei-Samea Elnawawy Chemistry Department Faculty of Science Al-Azhar University Nasr City P.O. Box 11884- Cairo Egypt

Effect of Milk Proteins on Physical and Chemical Characteristics of Crispy Puff Snacks

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Journal of Agricultural Science and Technology(A) 2013年第8期3卷 633-645页

作者： Ismail Hussein abd ei-Ghany mohamed abdelghany ei-Asser Khalid Said Nagy Ahmed Ali abd ei-Maksoud Dairy Science Department Faculty of Agriculture Cairo University Giza 11511 Egypt Food Science Department Agricultural Research Centre Giza 11511 Egypt

Dairy proteins included sweet whey solids （SWS）, whey protein concentrate （WPC）, milk protein concentrate （MPC） or sodium caseinate （SC） at level of 10% by weight were extruded with corn, rice, oat flour and other ingredients in a twin screw extruder. The functional properties and textural of crispy balls snacks （CBS） have been studied. The results showed that different protein types were significantly affected on functional and chemical properties of extrudate. The bulk density of CBS-SC was the lowest due to the highest expansion, while CBS-WPC retained the most water in the product, whereas, the maximum value of water solubility index was obtained in the CBS-CWP. Results also showed that protein digestibility value of extrudates had higher than non-extruded products. Color analysis of CBS-SC and CBS-SWS products had the highest AE values （P ≤ 0.05）, whereas CBS-SWS was statistically higher than CBS-SC in rank. Also, it was noticed that CBS-SWS had the highest value of browning index. The hardness of all extrudates products was desirable for expanded crispy where ranged from 17.3 N to 12.18 N. Generally, MPC and SC incorporated with cereal flour had acceptable quality characteristics and improved significantly the functional and texture properties of crispy balls products.

关键词： Extrusion sodium caseinate whey protein concentrate functional properties crispy product.

Searching for a Target Whose Truncated Brownian Motion

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Applied Mathematics 2017年第6期8卷 786-798页

作者： abd Elmoneim A. Teamah mohamed A. El-hadidy Marwa M. El-Ghoul Department of Mathematics Faculty of Science Tanta University Tanta Egypt

This paper presents search model for a randomly moving target which follows truncated Brownian motion. The conditions that make the expected value of the first meeting time between the searcher and the target is finit... 详细信息

关键词： Search Plan Truncated Brownian Motion Expected Value First Meeting Time

Ultrafine Fraction and Aerosol Attached Activity Size Distribution of Radon Progeny in Living Room

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Journal of Physical Science and Application 2012年第7期2卷 205-215页

作者： Amer mohamed mohamed Moustafa lotfy abd ei-Hady Mona Moustafa Mahmoud Mostafa Yuness abd El Fatah Department of Physics Faculty of Science Minia University Minia Egypt

Inhalation of 222Rn progeny in the domestic environment contributes the greatest fraction of the natural radiation exposure to the public. The ultrafine activity of these progeny amounts up to about l 0 percent of the total activity （attached and ultrafine）, but is considered to yield about 50 percent of the total radiation dose. Therefore, measurements of ultrafine fraction are essential for the estimation of radiation dose. The current study presents measured data on the total equilibrium equivalent concentration （EEC） and ultrafine equilibrium equivalent concentration （EECUn）, ultrafine fraction （fb）, attached and unattached activity size distributions of radon progeny in the low ventilated rooms at Minia University, Minia city, Egypt. A screen diffusion battery was used for collection the ultrafine fraction and measuring the total activity concentration of radon progeny. The attached activity size distribution of 214pb is determined by using a low pressure cascade impactor. The EEC of radon progeny varied between 1.3 and 18.9 Bq/m3 with a mean value of 5.2 ± 0.48 Bq/m2. The mean activity thermodynamic diameter （AMTD） ofultrafine of radon progeny was determined to be 1.26 nm with relative mean geometric standard deviations （GSD） of 1.3. The ultrafine fraction of radon progeny, fb, has a range 0.01 to 0.21 with an average of 0.08 ± 0.03. A relative mean GSD of 2.7 was determined for attached 2Lapb at a mean active median aerodynamic diameter （AMD） of 350 nm. Based on the above experimental results, the deposition fractions have been evaluated in each air way generation through the human lung by applying a lung deposition model. The bronchial deposition efficiencies of particles in the size range of attached radon progeny were found to be lower than those of ultrafine progeny. The effect of radon progeny deposition by adult male has been also studied for various levels of physical exertion. The dose conversion factor has been discussed as a function of fb.

关键词： Aerosol radon progeny activity size distribution ultrafine fraction and attached fraction.