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Head lice, Pediculus humanus capitis De Geer infestation is one of the most important health problems throughout the world. The aim of the current study was to estimate the prevalence of head lice among local primary school children in Kalar district-Kurdistan, Iraq and find out the relationship between head lice infestation and anxiety. During the period October 2018 to May 2019, an overall 8847 primary school children aged (6-11 years) were randomly selected from (22) primary schools and examined for the presence of head liceusing lice comb and magnifying lenses. Results of the current study revealed the existence of 1277 cases (14.43%) of infestation with P. humanus capitis. The rate of infection in girls was significantly higher than boys P

Recently; Network Mobility (NEMO) turns into a vital necessity for IP systems. It guarantees stable web availability amid the system versatility. Internet Engineering Task Force-Request for Comment (IETF RFC 4889) discussed route optimization in nested mobile network as an overcome of some limitations. In this paper, new model has been proposed to enhancing the performance of nested networks. Through the simulation in top-level of nested achieved 5% less end to end delay and 20% more throughput than NEMO BSP. In mid-level of nested achieved 10% less end to end delay and 18% more throughput than NEMO BSP. Finally; in third-level of nested achieved 14% less end to end delay and 15% more throughput than NEMO BSP. All of this taking into consideration that there is just three level of nesting, so when the levelof nesting increased results become efficacious. This model can classify as one of best proposed solution for nested mobile networks routing limitations and can be developed to reach optimal results by using more intelligent routers.

International audience; Concern is continuously raised about the safety of parabens which are present in most of the cosmetic preparations. In this investigation, methyl-, ethyl-, propyl- and butyl paraben (MP, EP, PP, BP), in a commercial cosmetic lotion, were deposited on human skin fragments, collected after surgical operations. Permeated parabens were determined after their passage through human epidermis-dermis layers, fixed on Franz diffusion cells. Bovine serum albumin (3%) was employed as receptor fluid. Then, parabens were assessed by liquid chromatography. The objective of this research was to determine the permeation of these molecules through human epidermis-dermis layers, and their possible passage to body tissues and/or accumulation in skin layers. Two groups of experiments were performed. In the first experimental group (G1), unique doses of the cosmetic were deposited on skin fragments fixed on Franz cells (n = 6), at time 0 h, followed with different withdrawn times of the receptor fluid at 12, 24 and 36 h. G1 results demonstrated that parabens penetration was influenced by their lipophilicity: more lipophilic the parabens were (BP > PP > EP > MP), less they crossed the skin layers (BP < PP < EP < MP). The second experimental group (G2) was constituted of three equal deposits on each Franz cell (n = 6) at different hour times 0, 12 and 24 h followed with three withdrawn times of the receptor fluid at 12, 24 and 36 h. The G2 results indicated that investigated parabens had significant increasing permeations in skin layers. This situation provokes the accumulation of these molecules which were considered by some authors as the cause of skin toxicities and carcinogenicity.