@article { author = {Baky, Ibrahim}, title = {Fuzzy Goal Programming Procedures for Multi-Level Multi-Objective Linear Fractional Programming Problems}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-20}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29744}, abstract = {AbstractThis paper presents two fuzzy goal programming (FGP) procedures for solving multi-level multi-objective linear fractional programming (ML-MOLFP) problems. In the proposed procedures, the membership functions for the defined fuzzy goals of all objective functions at all levels as well as the membership functions for vectors of fuzzy goals of the decision variables, controlled by decision makers at the top levels, are developed in the model formulation of the problem. Then fuzzy goal programming approach is used to achieve highest degree of each of the membership goals by minimizing their deviational variables and thereby obtaining the most satisfactory solution for all decision makers. The first proposed FGP procedure makes an extension work of Pramanik and Roy [23] and of B.B. Pal et al. [17,20]. The second proposed procedure my be seem as lexicographic methods for solving multiobjective programming problems that follows Shih et al. concept [28] but by using the FGP approach. The method of variable change on the under- and over-deviational variables of the membership goals associated with the fuzzy goals of the model is introduced to solve the problem efficiently by using linear goal programming (LGP) methodology. Illustrative numerical example is given to demonstrate the algorithms.}, keywords = {Multi-Objective Linear Fractional Programming,Multi-Level Programming Problems,Goal Programming,Fuzzy Mathematical Programming,Fuzzy Goal Programming}, url = {https://icmep.journals.ekb.eg/article_29744.html}, eprint = {https://icmep.journals.ekb.eg/article_29744_beec0fdbbbf8b128295ef1d213a0abb9.pdf} } @article { author = {Baky, Ibrahim}, title = {Interactive TOPSIS algorithms for solving multi-level non-linear multi-objective decision-making problems}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-23}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29746}, abstract = {AbstractThis paper extended the concept of the technique for order preference by similarity to ideal solution (TOPSIS) to develop a methodology for solving multi-level non-linear multi-objective decision-making (MLN-MODM) problems. Also, two new interactive algorithms are presented for the proposed TOPSIS approach for solving these types of mathematical programming problems. The first proposed interactive TOPSIS algorithm includes the membership functions of the decision variables for each level except the lower level of the multi-level problem. These satisfactory decisions are evaluated separately by solving the corresponding single-level MODM problems. The second proposed interactive TOPSIS algorithm lexicographically solves the MODM problems of the MLN-MOLP problem by taking into consideration the decisions of the MODM problems for the upper levels. Illustrative example is presented in order to show the efficiency and superiority of the proposed approach and the two interactive TOPSIS algorithms.}, keywords = {Multiple objective programming,Multi-level Programming,TOPSIS,Fuzzy programming}, url = {https://icmep.journals.ekb.eg/article_29746.html}, eprint = {https://icmep.journals.ekb.eg/article_29746_0c16183ae01171ebdd919a12f7b92959.pdf} } @article { author = {Attia, Hazem and Ewis, Karem and Abd Elmaksoud, Ibrahim}, title = {EFFECT OF POROSITY ON THE FLOW OF A VISCOELASTIC FLUID OVER A STRETCHING SHEAT}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-5}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29749}, abstract = {Abstract The flow through a porous medium of a non-Newtonian viscoelastic fluid past a stretching sheet is examined where the porosity of the medium is assumed to obey Darcy's model. An analytical solution of the governing non-linear boundary layer equation is obtained. The effect of the porosity of the medium and the characteristics of the non-Newtonian fluid on the flow is investigated.}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29749.html}, eprint = {https://icmep.journals.ekb.eg/article_29749_68ba0c13453c30a311d16e640073e123.pdf} } @article { author = {Seoud, M. and Abd ElHamid, G. and Abo Shady, M.}, title = {On L(2,1) and Prime cordial labelings}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-18}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29750}, abstract = {Abstract An L(2, 1)-labeling of a graph 𝐺 is a function 𝑓 from the vertex set 𝑉(𝐺) into the set of nonnegative integers such that |𝑓(𝑥)−𝑓(𝑦)|≥2 if 𝑑(𝑥,𝑦)=1 and |𝑓(𝑥)−𝑓(𝑦)|≥1 if 𝑑(𝑥,𝑦)=2, where 𝑑(𝑥,𝑦) denotes the distance between 𝑥 and 𝑦 in 𝑉(𝐺). The L(2, 1)-labeling number, 𝜆(𝐺), of 𝐺 is the minimum 𝑘 where 𝐺 has an L(2, 1)-labeling 𝑓 with 𝑘 being the absolute difference between the largest and smallest image points of 𝑓 . A prime cordial labeling of a graph 𝐺 with vertex set 𝑉 is a bijection 𝑓 from 𝑉 to {1,2,...,|𝑉 |} such that if each edge 𝑢𝑣 is assigned the label 1 if gcd(𝑓(𝑢),𝑓(𝑣))=1 and 0 if gcd(𝑓(𝑢),𝑓(𝑣))>1, then the number of edges labeled with 0 and the number of edges labeled with 1 differ by at most 1. In this paper we find the labeling number 𝜆(𝐺)for some families of graphs, and we give an upper bound for the number of edges of any graph on 𝑛 vertices to have a prime cordial labeling, and we compare this upper bound with the number of edges of two families of graphs.}, keywords = {L(2,1)-labeling,prime cordial labeling,C++ programming Language}, url = {https://icmep.journals.ekb.eg/article_29750.html}, eprint = {https://icmep.journals.ekb.eg/article_29750_563e5cb38cfb59feb0ec34c5f13318ba.pdf} } @article { author = {El Hamouly, Hassan}, title = {SOLUTION of LINEAR SYSTEM of PARTIAL DIFFERENTIAL EQUATIONS WITH CONSTANT COEFFICIENTS}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-13}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29751}, abstract = {ABSTRACTIn this paper we adopt operator method for solution of linear system of partial differentialequations with constant coefficients. We deal with operator L( Dx , Dy ),where Dx=/x ,that need not be homogeneous, where we introduce three possible solutions of thehomogeneous equation in terms of basic (or arbitrary) functions in addition to the solutionof the nonhomogeneous equation.}, keywords = {Partial differential equation,operator method,separation of variables}, url = {https://icmep.journals.ekb.eg/article_29751.html}, eprint = {https://icmep.journals.ekb.eg/article_29751_e7faf19304228f1deaa36a13f0fa81f4.pdf} } @article { author = {Attia, Hazem}, title = {TIME VARYING ROTATING DISK FLOW AND HEAT TRANSFER THROUGH A POROUS MEDIUM OF A NON NEWTONIAN FLUID WITH SUCTION AND INJECTION}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-14}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29753}, abstract = {Abstract The time varying flow of an incompressible viscous non-Newtonian fluid above an infinite rotating porous disk in a porous medium is studied with heat transfer. A uniform injection or suction is applied through the surface of the disk. Numerical solutions of the nonlinear partial differential equations which govern the hydrodynamics and energy transfer are obtained. The effect of the porosity of the medium, the characteristics of the non-Newtonian fluid and the suction or injection velocity on the velocity and temperature fields is considered.}, keywords = {Rotating disk flow,heat transfer,Porous medium,non-Newtonian fluid,uniform inflow,numerical solution}, url = {https://icmep.journals.ekb.eg/article_29753.html}, eprint = {https://icmep.journals.ekb.eg/article_29753_6e658dc0bb148b92f584127e836931ca.pdf} } @article { author = {Attia, Hazem and Ewis, Karem and Abd Elmaksoud, Ibrahim}, title = {NUMERICAL STUDY OF UNSTEADY CIRCULAR PIPE FLOW OF A DUSTY FLUID THROUGH A POROUS MEDIUM}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-7}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29754}, abstract = {Abstract In this paper, the unsteady flow in a porous medium of a dusty viscous incompressible fluid through a circular pipe is studied taking the Hall effect into consideration. A constant pressure gradient in the axial direction and a uniform magnetic field directed perpendicular to the flow direction are applied. The particle-phase is assumed to behave as a viscous fluid. A numerical solution for the governing equations of motion is developed using the method of finite differences.}, keywords = {Fluid mechanics,Porous medium,computational fluid,flow in channels,circular pipe flow}, url = {https://icmep.journals.ekb.eg/article_29754.html}, eprint = {https://icmep.journals.ekb.eg/article_29754_3a7200738249a85d731156e367113586.pdf} } @article { author = {Gharib, M. and Sharawy, A.}, title = {Some Characterizations of The Skew Normal Distribution Using Conditional Moments}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-19}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29755}, abstract = {Abstract Very few researchers have tackled the characterization problem of the skew nor- mal distribution due perhaps to its mathematical tractability. In this article, some new characterization results for the skew normal distribution based on conditional moments have been obtained. The results specialized to the standard normal distri- bution. Some consequences and discussions are, also given in this context.}, keywords = {Order Statistics,single moments,product moments,skew normal distribution,Characterization}, url = {https://icmep.journals.ekb.eg/article_29755.html}, eprint = {https://icmep.journals.ekb.eg/article_29755_6fdc0e9a584f9ab5f3e8f172aacea3ec.pdf} } @article { author = {Eldesoky, Islam}, title = {Mathematical analysis of unsteady MHD blood flow through parallel plate channel with heat source}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-16}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29756}, abstract = {AbstractIn the present study, a mathematical model of unsteady blood flowthrough parallel plate channel under the action of an applied constanttransverse magnetic field is proposed. The model is subjected to heat source.Analytical expressions are obtained by choosing the axial velocity;temperature distribution and the normal velocity of the blood depend on yand t only to convert the system of partial differential equations into systemof ordinary differential equations under the conditions defined in our model.The model has been analyzed to find the effects of various parameters suchas, Hartmann number, heat source parameter and prandtl number on theaxial velocity, temperature distribution and the normal velocity. Thenumerical solutions of axial velocity, temperature distributions and normalvelocity are shown graphically for better understanding of the problem.Hence, the present mathematical model gives a simple form of axial velocity,temperature distribution and normal velocity of the blood flow so that it willhelp not only people working in the field of Physiological fluid dynamics butalso to the medical practitioners.}, keywords = {Blood flow,Parallel plate Channel,Boundary layer,Heat source,magnetic field}, url = {https://icmep.journals.ekb.eg/article_29756.html}, eprint = {https://icmep.journals.ekb.eg/article_29756_2c32e51e9dd38060ed45beaa8ea4165b.pdf} } @article { author = {Nasef, Arafa}, title = {Rough Set Theory Based on Two Relations and Its Applications}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-11}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29757}, abstract = {Abstract Rough sets theory was introduced by Pawlak in the early 80's and has reached a level of high visibility and maturity. In recent year's we have witness diverse as well as widespread research in rough sets theory and its applications worldwide. In this paper, we introduce a new approximation space (biapproximation space) and define the lower and upper approximation based on two relations to take advantages of two relations in the same time. With this approximation and our definitions, we present two concepts to calculate the size of boundary region and discuss some of the basic properties of them. Examples are provided to illustrate the behavior of this new notion. Compared with Pawlak approximation space, our new approximation space is very efficient and settable when we have a lot of data for one case.}, keywords = {Approximation space,rough set,bitopological spaces}, url = {https://icmep.journals.ekb.eg/article_29757.html}, eprint = {https://icmep.journals.ekb.eg/article_29757_9d19bd32516d11151c5e7a1944af0fe1.pdf} } @article { author = {Moniem, A.}, title = {Prey - Predator in Chemostat When the Prey Produces Unaffected Inhibitor}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-12}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29758}, abstract = {Prey - predator in chemostat when the prey produces unaffected inhibitor is considered. This inhibitor isnot lethal to neither predator nor nutrient and results in decrease of growth rate of the prey at some cost to itsreproductive abilities. A Lyapunov function in the study of the global stability of a predator-free steady state isconsidered. Local and global stability of other steady states, persistence analysis, as well as numericalsimulations are also presented.}, keywords = {food chain,toxin – chemostat – prey – predator}, url = {https://icmep.journals.ekb.eg/article_29758.html}, eprint = {https://icmep.journals.ekb.eg/article_29758_7935f08d1287a7e22138997fa2adb7b3.pdf} } @article { author = {Moniem, Ashraf}, title = {Simple Food Chain in Chemostat When the Predator Produces Unaffected Toxin}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-12}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29759}, abstract = {In this paper, Simple food chain in chemostat when the predator produces unaffected toxin isconsidered. This inhibitor is not lethal to neither prey nor nutrient and results in decrease of growth rate of thepredator at some cost to its reproductive abilities. A Lyapunov function in the study of the global stability of apredator-free steady state is considered. Local and global stability of other steady states, persistence analysis, aswell as numerical simulations are also presented.}, keywords = {food chain,toxin – chemostat – prey – predator – Lyapunov function}, url = {https://icmep.journals.ekb.eg/article_29759.html}, eprint = {https://icmep.journals.ekb.eg/article_29759_18e7f3cb9b9e4be4ab614fb431453b86.pdf} } @article { author = {Rady, K. and Elshokrofy, K. and Farag, E. and Elsad, R.}, title = {Effect of (Mg-Ti) substitution on the structure and Physical properties of Ni - Zn ferrite}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-19}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29760}, abstract = {Abstract Effect of the substitution by two ions together, (Ti-Mg) ions, on the structure, magnetic and electrical properties of Ni - Zn ferrite of chemical formula Ni0.7 Zn0.3 (Mg Ti)x Fe2-xO4 (x = 0, 0.1, 0.2, 0.3and 0.4) prepared by conventional ceramic method. These structure of the prepared samples was studied using X– ray diffraction pattern. It was found that as (Mg-Ti) ions concentration increases, the value of saturation magnetization, initial permeability and Curie temperature were decreased. It was also observed that the dc resistivity of the prepared samples increased with increasing (Mg-Ti) concentration and hence decreasing the dielectric loss of investigated samples. The present study indicated also that the samples of x = 0.1 and 0.2 show high resistivity and relatively high magnetic properties which can be exploited in a certain technical application.}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29760.html}, eprint = {https://icmep.journals.ekb.eg/article_29760_8b52f67ef7a0101261433c87f9af276e.pdf} } @article { author = {A, Hebatalrahman,}, title = {The Effect of Laser Wavelength on The Microstructure Features of SS316L During Laser Irradiation}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-12}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29761}, abstract = {Abstracts In these work, New technique for harden stainless steel 316L and similar alloys which does not harden in response to heat treatments will be developed by laser irradiation .The goal of this study is to investigate the effect of laser wavelengths at the same repetion rate, energy per pulse and number of pluses on different hardening routes for 316L stainless steel by laser surface irradiation. For each hardening route we present the microstructure, modulus and the Hardness of the processed surface and the conditions leading to the best compromise between. highest hardness, reasonable modulus and best homogeneity in microstructure features The results show that the laser treatment improves the properties of AISI 316L stainless steel. This improvement is not associated with distinctive changes in mechanical properties, rather it is attributed to microstructure. In fact the process is complicated and limited to certain laser irradiation conditions depends mainly on the original microstructure.}, keywords = {Laser,Irradiation,nano-indentation,Qualitative,qualitative analysis,stainless steel}, url = {https://icmep.journals.ekb.eg/article_29761.html}, eprint = {https://icmep.journals.ekb.eg/article_29761_cd7f6a8eab029b51eb793031d7a9184d.pdf} } @article { author = {Harfoush, Amr and Mokhtar, Ayman and El-Sherif, Ashraf and Hassan, Mahmoud}, title = {Simulation and Computer Modeling of a Diode pumped Erbium-Ytterbium (Er3+/Yb3+) Co-doped Fiber Laser}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-9}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29762}, abstract = {Abstract: Fiber lasers technology has grown rapidly due to the rapid advances in high power diodes, diode-to-fiber coupling schemes and doped fiber design and fabrication. Erbium-Ytterbium (Er3+/Yb3+) co-doped fiber is an attractive active medium for the fiber lasers in which Ytterbium is co-doped with Erbium to produce a spectrum in third telecoms window around 1550nm which makes them suitable sources for long range applications. In this paper the Er3+/Yb3+ fiber laser pumped by a laser diode at 980 nm is simulated using the Optiwave software. The pump source was swept from 1.25 to 5 w to extract the slope efficiency. The pump radiation was focused into the Er3+/Yb3+ fiber through an input mirror, which was 98% reflecting at 1550 nm and 99% transmitting at 980 nm. A length of 0.1 m of Er3+/Yb3+ fiber was used with an N.A. of 0.22, Er3+ ion density of 25.4 x 1024 m-3, and Yb3+ ion density of 320 x 1024 m-3. The output mirror was 50% reflecting at 1550 nm. Then the length of the fiber was swept from 1m to 5m in order to obtain optimized fiber length. The simulation results demonstrated that a laser output power of 0.8 W was obtained at 1550 nm for a launched power of 2 W with a slope efficiency of 40% and a lasing threshold of 0.4 W of launched pump power. The results also showed that the optimized fiber length was achieved at 2 m which is in a good agreement with the published similar experimental schemes.}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29762.html}, eprint = {https://icmep.journals.ekb.eg/article_29762_b81d20d6c699f2c36839fb46f9e7917e.pdf} } @article { author = {El-Ghandoor, H. and Farag, Noha and Ismail, A.}, title = {Investigation of the Relation between amino acids molar refractivity and their concentration using laser sheet technique}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-1}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29763}, abstract = {AbstractThe relation between free branched amino acids concentration and refractive index can be revealed using a new laser interferometry technique. In previous work, glucose level in blood plasma was measured using laser interferometry in a capillary tube and demonstrated that the technique is feasible, affordable, and precise (1). In this study, we had established laser fringes as finger prints for the three branched amino acids: leucine, isoleucine and valin in order to determine their concentrations until values as small as nano-milligram in a solution. branched amino acids in order to determine their concentration within plants. Solutions of the three branched amino acids (leucine, isoleucine and valine) were used as standards at different concentrations to obtain more clear information about the relationship between their concentrations, molar refractivity and refractive index as an initial step in order to measure their concentration in a faster and cheaper way. The relationship between the molar refractivity, refractive index and the amino acid concentration is discussed.}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29763.html}, eprint = {https://icmep.journals.ekb.eg/article_29763_77c19337ef2f283cc5e73be377316dad.pdf} } @article { author = {El Ghandoor, H. and Abo Mostafa, E.}, title = {Application of Moiré Interferometry for Measuring API Gravity of Crude Oil}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-8}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29764}, abstract = {ABSTRACT In this work two concentric capillary tubes-lense interferometers have been used with the same laser focused sheet of light. One of the lense-capillary tube interferometers was filled with the crude oil under investigation, while the second lense-capillary tube interferometers was filled with air at room temperature and normal pressure. The transverse interference fringes produced from each of the interferometers were allowed to be combined together displaying the Moiré interference fringe pattern that can be used for the calculations of the crude oil refractive index and density. Also PC software was performed to extract the information needed from the resulting Moiré pattern to obtain the API gravity of the oil. (American Petroleum Institute)}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29764.html}, eprint = {https://icmep.journals.ekb.eg/article_29764_9e0b7174f9f6fc9d2b992bda5e17b828.pdf} } @article { author = {El-Ghandoor, H. and El-Said, E. and Bayoumy, A. and Zaki, L.}, title = {Application of Laser interference Technique to investigate Haematological Disorders}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-22}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29765}, abstract = {Abstract : In this work laser interference technique was used to detect haematological disorders such as anaemia ,thrombocoytopenia ,leucocytosis this technique is called the laser sheet interference technique developed by professor Hatem El Ghandoor for measuring the optical density of blood components , the obtained results applying by this technique proved that The laser interference technique could be used as a very sensitive tool for measuring haemoglobin of blood and It may be considered as the basis for designing a new prototype to measure haemoglobin based on a laser interference}, keywords = {haematological disorder,laser interferometry,laser-sheet interferometry}, url = {https://icmep.journals.ekb.eg/article_29765.html}, eprint = {https://icmep.journals.ekb.eg/article_29765_bc1d4a0af4653e116308e9d8d54fa7b6.pdf} } @article { author = {El Ghandoor, H. and Farag, N. and Abo Mostafa, E. and Ismail, A.}, title = {Application of Laser-Capillary Tube – Lens Interferometer technique for measuring free amino acids in humans and plants}, journal = {The International Conference on Mathematics and Engineering Physics}, volume = {6}, number = {International Conference on Mathematics and Engineering Physics (ICMEP-6)}, pages = {1-9}, year = {2012}, publisher = {Military Technical College}, issn = {2636-431X}, eissn = {2636-4328}, doi = {10.21608/icmep.2012.29766}, abstract = {Abstract The relation between free branched amino acids concentration and refractive index can be revealed using a new laser interferometry technique In previous work, glucose level in blood plasma was measured using laser interferometry in a capillary tube and demonstrated that the technique is feasible, affordable, and precise (1). In this study, we had established laser fringes as finger prints for the three branched amino acids: leucine, isoleucine and valine in order to determine their concentrations until values as small as nano-milligram in a solution. Branched amino acids in order to determine their concentration within plants. Solutions of the three branched amino acids (leucine, isoleucine and valine) were used as standards at different concentrations to obtain more clear information about the relationship between their concentrations, molar refractivity and refractive index as an initial step in order to measure their concentration in a faster and cheaper way. The relationship between the molar refractivity, refractive index and the amino acid concentration is discussed.}, keywords = {}, url = {https://icmep.journals.ekb.eg/article_29766.html}, eprint = {https://icmep.journals.ekb.eg/article_29766_b6ae1b17273b60933ad06704af6be453.pdf} }