Conformal mapping of unbounded multiply connected regions onto canonical slit regions

We present a boundary integral equation method for conformal mapping of unbounded multiply connected regions onto five types of canonical slit regions. For each canonical region, three linear boundary integral equations are constructed from a boundary relationship satisfied by an analytic function on an unboundedmultiply connected region. The integral equations are uniquely solvable. The kernels involved in these integral equations are the modified Neumann kernels and the adjoint generalized Neumann kernels

Facing the growing problem of the electric power consumption in Egyptian residential building using building performance simulation program

Egypt has been experiencing recurrent power cuts especially at the summer, with the problem being made worse by the extra demands placed on the electrical grid by the advent of the holy month of Ramadan. Electricity shortages are now a problem in Cairo, Alexandria, Sohag, Qena, Luxor, Aswan, and Nubia, as well as in the Nile Delta governorates of Beheira and Qalioubiya. The aim of this study is to develop a model for the Egyptian residential building using Building Performance Simulation Program and make sensitivity analysis on some variables effecting the electric power consumption in order to help faceting the growing problem in Egypt. The model was created using the IES-VE 2012 (Integrated Environmental Solution ). The simulation model was verified against the survey data for the Egyptian apartment and same model simulated using energy Plus simulation tool. The results of the program describing different situations for energy using profile for the air conditions, lighting and equipments in respect to building layout and construction climate and pattern of use. This model can be used in the future to help in reducing the electric power consumption in the residential building

Mobile Blood Donation Application

The importance of blood in human existence and wellbeing cannot be underrated. Blood has been regarded as the basis of human living, thus if it is not in short of, human health might be at risk. Thus blood banking and blood donation in any medical operation for saving human's life must be readily available. In this study, the researcher proposed the development of a WAP-based blood application system that enables voluntary blood donors to apply to donate blood anywhere and at anytime, with the aim of solving the problem experience in the traditional blood donation application

Incidence of orbital, conjunctival and lacrimal gland malignant tumors in USA from Surveillance, Epidemiology and End Results, 1973-2009

AIM: To determine the types and incidence of tumors affecting the orbit, conjunctiva and lacrimal glands and to study the trend line of these tumors in the United States from 1973 to 2009. METHODS: We used the publicly available Surveillance, Epidemiology and End Results (SEER) database registries to determine the incidence rates. Age was adjusted to the 2000 US Standard Population. Patients were stratified according to age group, gender, race and histological grouping of tumor lesions. Three age groups were defined: 0-19, 20-49 and ≥50y. Annual percentage changes were calculated to examine trends. RESULTS: The overall age adjusted incidence rate was 3.39 (95%CI: 3.27-3.52) per million person-years. The tumors were more prevalent in age group ≥50 counting 9.51 (95%CI: 9.11-9.92) per million person-years. Most of the soft tissue sarcomas occurred in the young age with incidence rate of 0.35 (95%CI: 0.28-0.42) per million person-years. Lymphomas were the dominant subtype in the adult population with incidence rate of 5.74 (95%CI: 5.43-6.06) per million person-years. Incidence rates were higher in males than females with an overall rate ratio of 1.31 (95%CI: 1.21-1.41) mainly caused by the increase in carcinoma subtypes. White race had a higher tumor incidence with a rate ratio of 1.47(95%CI: 1.25-1.73) driven by the higher incidence of most histological subtypes. Orbital tumors showed a higher incidence rate followed by conjunctival and lacrimal gland tumors with incidence rates of 1.59, 1.37 and 0.43 per million person-years respectively. The trend line of overall incidence of tumors showed a significant increase (APC=3.11, 95%CI: 2.61-3.61) mainly due to increase of lymphomas. This increase was higher than the increase of lymphomas at other sites. CONCLUSION: Orbital, conjunctival and lacrimal gland malignant tumors differ among children and adults. Over the years there has been a noticeable increase in incidence rates of orbital and lacrimal gland tumors mainly caused by an increase in lymphomas and an apparent increase due to advances in diagnostic techniques. ICD-O-3 topographical coding should be improved to consider the different orbital bones and ocular structures

3D Woven Composites: From Weaving to Manufacturing

Manufacturing near-net shape preforms of fibre-reinforced composites has received growing interest from industry. Traditionally, a preform was made from 2D fabrics, but recently, it has been shown that 3D textiles can be used with success; with weaving being the predominant technology for carbon fibre composites. In 3D weaving, weft, warp and binder fibres run across, along and through the fabrics in the X, Y and Z directions, respectively. Producing a unitised single-piece fabric and subsequently reducing the takt time required for rapid composite manufacturing are two of the main advantages of using 3D woven preforms. Weaving of 3D fabrics, manufacturing of 3D composites, physical characterisation and mechanical testing of infused composites samples are discussed in this chapter. Finally, a large automotive composite made of single-piece 3D woven preform was manufactured and presented for demonstration

Evaluation of the genetic effects of the in vitro antimicrobial activities of Rhazya stricta leaf extract using molecular techniques and scanning electron microscope

Rhazya stricta plants have always played a major role in the treatment of human and animal diseases and it has main role in the folk medicine. The aim of this study was to explore the potential antimicrobial activities of the aqueous leaves extract of R. stricta on Gram-negative and Gram-positive food-borne bacteria and evaluate the antimicrobial effect at the molecular level. The results indicate that the aqueous leaves extract of R. stricta exhibited the antimicrobial activity against tested microorganisms. A clear, but significantly smaller, inhibition zones were formed after the treatment of two Gram-negative bacteria (Escherichia coli and Aeromonas hydrophila) and one Gram-positive bacteria (Staphylococcus aureus) with the aqueous leaves extract of R. stricta (50 mg) comparing with those formed after the treatment with streptomycin (15 mg). Moreover, the results obtained after the treatments of bacterial strains with elevated concentrations of aqueous extracts of the wild plant of R. stricta leaves reveled that the extract has potent lethal activities as the growth turbidity decreased as the concentration or time of exposure increased. In addition, the observation by the scanning electron microscope showed that cells of the bacterial strains were damaged after the treatment with plant extracts. The noticed antimicrobial effect was explored at the molecular level, using restriction fragment length polymorphism (RFLP) analysis of the plasmid DNA and random amplification of polymorphic DNA (RAPD) analysis of the genomic DNA extracted from the control (untreated) and R. stricta leaf extract-treated bacterial strains. The results demonstrate polymorphic band pattern for most treated microbes compared with the wild type (untreated) strain. Concerning gene expression under the same conditions, total protein contents of the three treated bacteria showed significantly gradual increase in all of the treatment doses compared to control. In addition, the SDS-PAGE of the bacterial cellular proteins resulted in the induction of some protein bands under the treatment conditions. All these results strongly point out the mutagenicity, lethal and antimicrobial effect of the leaves extract of R. stricta. The results indicate the possibility of using the leaves extract of R. stricta as a source of antibacterial compounds for treatment of infections caused by multi-drug resistant (MDR) bacterial pathogens.Keywords: Medicinal plants, Rhazya stricta, antimicrobial, mutagenicity, RAPD, RFLP, SEM, E. coli, S. aureus, A. hydrophilaAfrican Journal of Biotechnology Vol. 12(21), pp. 3171-318

Genetic diversity and DNA fingerprint study in tomato (Solanum lycopersicum L) cultivars grown in Egypt using simple sequence repeats (SSR) markers

A collection of ten cultivars of tomato grown in Egypt were screened with 20 simple sequence repeat (SSR) primers in order to determine genetic identities, genetic diversity and genetic relationships among these  cultivars. On an average, 38 alleles were amplified using SSR primers with scorable fragment sizes ranging  from approximately 75 to 275 bp. 23 alleles were polymorphic thus revealing 60.5% of polymorphism. The  genetic similarity estimated according to SSR data was scaled between 17.6 and 93.2%, suggesting the  potential of SSR markers in discriminating among plants of close or distant genetic backgrounds. Unweighted pair group method with arithmetic mean (UPGMA) clustering grouped the cultivars into two groups where the  two Egyptian cultivars Edkawy and Giza 80 were clustered in different group. In addition, clustering was found  consistent with the known information regarding growth habit. The genetic distance information obtained in  this study might be useful to breeder for planning crosses among these cultivars.Key words: Tomato cultivars, diversity, Simple sequence repeats (SSR), Egypt

Design of GCSC Stabilizing Controller for Damping Low Frequency Oscillations

This paper presents a systematic procedure for modeling and simulation of a power system equipped with FACTS type Gate Controlled Series Compensator (GCSC) based stabilizer controller. Single Machine Infinite Bus (SMIB) power system was investigated for evaluation of GCSC stabilizing controller for enhancing the overall dynamic system performance. PSO algorithm is employed to compute the optimal parameters of damping controller. Eigenvalues of system under various operating condition and nonlinear time domain simulation is employed to verify the effectiveness and robustness of GCSC stabilizing controller in damping low frequency oscillations (LFO) modes