Search Results - "Hardan, L"

Performance of Cr-doped ZnO for acetone sensing by Al-Hardan, N.H., Abdullah, M.J., Aziz, A. Abdul

“…► Zinc oxide (ZnO) thin films were doped with chromium (Cr) through reactive dual sputtering for gas sensing applications. ► The Cr concentrations were in the…”
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Sensing mechanism of hydrogen gas sensor based on RF-sputtered ZnO thin films by Al-Hardan, N.H., Abdullah, M.J., Aziz, A. Abdul

“…The mechanism of hydrogen (H 2) gas sensing in the range of 200–1000 ppm of RF-sputtered ZnO films was studied. The I–V characteristics as a function of…”
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Nitrate removal from contaminated groundwater by Liang, Sun, Mann, Mary Ann, Guter, Gerald A., Kim, Philip H.-S., Hardan, David L.

“…Data from bench-scale tests were used in conjunction with computer model simulations to develop design criteria for an ion exchange treatment process for…”
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Stratification in anterior teeth using one dentine shade and a predefined thickness of enamel: a new concept in composite layering--Part II by Manauta, J, Salat, A, Putignano, A, Devoto, W, Paolone, G, Hardan, L S

“…While restoring an anterior tooth, shade matching is one of the crucial points that we can face to have an esthetic final outcome. After studying the physical…”
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The gas response enhancement from ZnO film for H2 gas detection by AL-HARDAN, N, ABDULLAH, M. J, ABDUL AZIZ, A

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Stratification in anterior teeth using one dentine shade and a predefined thickness of enamel: a new concept in composite layering--Part I by Manauta, J, Salat, A, Putignano, A, Devoto, W, Paolone, G, Hardan, L S

“…Restoring an anterior tooth has always been a challenge, regarding the shade matching, the choice of colors, opacities, translucencies of our composites and…”
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Impedance spectroscopy of undoped and Cr-doped ZnO gas sensors under different oxygen concentrations by Al-Hardan, N., Abdullah, M.J., Aziz, A. Abdul

“…► Cr doped ZnO is tested for gas sensing applications and for the best of our knowledge have not been studied previously. ► Cr doped ZnO can detect different…”
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Low operating temperature of oxygen gas sensor based on undoped and Cr-doped ZnO films by Al-Hardan, N., Abdullah, M.J., Abdul Aziz, A., Ahmad, H.

“…Undoped and doped ZnO with 1 at.% (atomic percentage) chromium (Cr) was synthesized by RF reactive co-sputtering for oxygen gas sensing applications. The…”
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Effect of different modes of light curing and resin composites on microleakage of Class II restorations by Hardan, L S, Amm, E W, Ghayad, A

“…In an attempt to reduce polymerization shrinkage of composites, some light curing units (LCU) presented "soft-start polymerization" in addition to the…”
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Effect of different modes of light curing and resin composites on microleakage of Class II restorations--Part II by Hardan, L S, Amm, E W, Ghayad, A, Ghosn, C, Khraisat, A

“…To reduce the polymerization shrinkage of the composite resins and after the introduction of the "slow and gradual polymerization" by GORACCI et al. in 1992,…”
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Investigation on UV photodetector behavior of RF-sputtered ZnO by impedance spectroscopy by Al-Hardan, N.H., Abdullah, M.J., Ahmad, H., Aziz, A. Abdul, Low, L.Y.

“…Ag/ZnO/Ag thin films representing metal/semiconductor/metal ultraviolet (UV) photodetectors were successfully prepared by RF magnetron sputtering. A UV light…”
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Growth of zinc oxide nanoflowers by thermal evaporation method by ABDULGAFOUR, H. I, HASSAN, Z, AL-HARDAN, N, YAM, F. K

“…An alternative method for site-selective growth of ZnO nanostructures that does not use an Au catalyst or a ZnO thin-film seed layer is presented. Well-aligned…”
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The effect of oxygen ratio on the crystallography and optical emission properties of reactive RF sputtered ZnO films by Al-Hardan, N.H., Abdullah, M.J., Abdul Aziz, A., Ahmad, H., Rashid, M.

“…ZnO thin films were successfully grown on fused silica substrates by reactive RF sputtering. The ratio of the reactive oxygen (O 2) gas to the sputter argon…”
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Studies of surface and interface phonon polariton characteristics of wurtzite ZnO thin film on wurtzite 6H-SiC substrate by p-polarized infrared attenuated total reflection spectroscopy by Lee, S.C., Ng, S.S., Al-Hardan, N.H., Abdullah, M.J., Hassan, Z., Hassan, H. Abu

“…The surface and interface phonon polariton characteristics of a wurtzite ZnO thin film grown on a wurtzite 6H-SiC substrate are investigated by p-polarized…”
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Growth of high-quality ZnO nanowires without a catalyst by Abdulgafour, H.I., Hassan, Z., Al-Hardan, N.H., Yam, F.K.

“…In this study, an efficient method to achieve a wide range of high-quality zinc oxide (ZnO) nanostructures through zinc powder evaporation at lower…”
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Electron transport mechanism of thermally oxidized ZnO gas sensors by Al-Hardan, N.H., Abdullah, M.J., Abdul Aziz, A.

“…ZnO gas sensor was fabricated by thermal oxidation of metallic Zn at different time periods. The sensors were characterized by I– V measurement with DC…”
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The effect of heat treatments on the properties of Ti/Pt heating elements for gas sensor applications by Al-Hardan, N.H., Abdullah, M.J., Abdul Aziz, A., Hassan, Z.

“…Ti/Pt as heating element for gas sensor applications was fabricated on silicon (Si) wafer substrate. The fabricated device was subjected to heat treatment at…”
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An 18 month evaluation of MM-MTA pulpotomy on primary decayed molars by Abou Chedid, J C, Mchayleh, N, Khalil, I, Melki, B, Hardan, L S

“…Pulpotomy is the most performed and controversial therapeutic in pediatric dentistry. Formocresol is known to have a toxic effect on living tissues, a…”
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Amalgam, composite and compomer: microbiological study by Zogheib, C M, Hardan, L, Khoury, C Kassis, Naaman, N Bou Abboud

“…Restorative materials have different consequences on the periodontium. The surface of these materials may influence gingival health and cause in some instances…”
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Nitrate removal from contaminated groundwater by Liang, S, Mann, MA, Guter, G A, Hardan, D L

“…The San Gabriel Valley groundwater basin is the principal water source for the local population in the valley and as a result of contamination with volatile…”
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