Internal curing agent by using super-absorbent polymer was present in this study, its effect on the properties of self-compacting concrete was evaluated .The SAP content in the concrete mix was 0.5 % by weight of cement. Three procedures for curing were adopted; curing in water, curing in water and air and curing in polyethylene sealed bags. Fresh concrete tests conducted to assess the self-compactability of the produced concrete. Moreover, compressive and splitting strength tests were carried out. The testing program had been extended to the age of 90 days.The use of super-absorbent polymer did not affect the fresh state characteristics of the studied SCC and achieved an increase in both compressive and tensile strengths as compared to the reference concrete mix.
Nowadays the security of web applications becomes a serious problem because of the impact of its vulnerability, so a previous consideration should be taken to diminish its harmful effect. One of the most important tools used to test the security of the web is web security scanner which is a tool that can be used by the penetration tester to give clear indication of the weakness by detecting the vulnerabilities of web pages like SQL injection, XSS attack. While the importance of web scanners are so obvious, but there effectiveness and differences need to be evaluated to find the flaws, limitations and distinguish between them. In this paper an analytical comparison is present on six open source web scanners by using manual and automatic testing of the chosen test beds then analyzing these results to assess the scanners.
Poly [N-(1, 3-thiazo-2yl)]maleamic acid synthesized from corresponding monomer N-(1, 3-thiazo-2yl)maleamic acid (NTM) by using the process of electrochemical polymerization in aqueous solution at room temperature. The structure of the polymeric layer generated on the surface of (Low Carbon Steel (L.C.S)) (working electrode) was investigated by Fourier Transmission Infrared [FT-IR] and a scanning electron microscope [SEM]. The anticorrosion ability of a polymeric layer on low carbon steel (L.C.S) was investigated using a method of electrochemical polarization at temperatures ranging from (293 to 323) K, in a 3.50 percent NaCl solution. The activation parameters, both kinetic and thermodynamic for the L.C.S corrosion process were computed. The biological action of polymeric film had been tested against the gram positive, Staphylococcus aureus (S.aureus), and the gram negative, Escherichia coli (E.coli). The result shows that polymer and polymer nanocomposite provides the best performances for corrosion protection of the L.C.S by reducing its corrosion current density in comparison with the bare L.C.S. The effect of nanomaterials has been explored by adding them to solution of the monomer for improving the anticorrosion and anti-bacterial characteristics of polymeric films. The Oxide of Graphene was the nanomaterial used in this investigation (GO).
The inhibitive action of Reactive Red (RR31) dye against corrosion of carbon steel in 1M acetic acid solution has been studied using gravimetric method at temperature ranged (288-318)K. The antibacterial activity for the different concentrations of RR31 dye against different bacterial species was studied. The experimental data indicates that this dye acts as a potential inhibitor for carbon-steel in acetic acid medium and the protection efficiency increase with increasing (RR31) dye. The adsorption of (RR31) dye on the carbon steel surface was found to follow Langmuir adsorption isotherm. Thermodynamic data for the adsorption process such as Gibbs free energy change ∆G ads , enthalpy change ∆H ads , and entropy change ∆S ads were estimated. The results showed that the different concentrations of RR31 dye has antibacterial ability.
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