|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | TiO_2 nanotubes as solid-phase extraction adsorbent for the determination of polycyclic aromatic hydrocarbons in environmental water samples显示文摘An analytical method based on TiO 2 nanotubes solid-phase extraction (SPE) combined with gas chromatography (GC) was established for the analysis of seven polycyclic aromatic hydrocarbons (PAHs): acenaphtylene, acenaphthene, anthracene, fluorene, phenanthrene, fluoranthene and pyrene. Factors affecting the extraction efficiency including the eluent type and its volume, adsorbent amount, sample volume, sample pH and sample flow rate were optimized. The characteristic data of analytical performance were determined to investigate the sensitivity and precision of the method. Under the optimized extraction conditions, the method showed good linearity in the range of 0.01-0.8 μg/mL, repeatability of the extraction (RSD were between 6.7% and 13.5%, n = 5) and satisfactory detection limits (0.017-0.059 ng/mL). The developed method was successfully applied to the analysis of surface water (tap, river and dam) samples. The recoveries of PAHs spiked in environmental water samples ranged from 90% to 100%. All the results indicated the potential application of titanate nanotubes as solid-phase extraction adsorbents to pre-treat water samples. | Bochra Bejaoui Kefi Latifa Latrous El Atrache Hafedh Kochkar Abdelhamid Ghorbel | 2011 | Journal of Environmental Sciences2011，23，5： | 10 |
| 2 | Catalytic performances of Ni/mesoporous SiO_2 catalysts for dry reforming of methane to hydrogen显示文摘Several mesoporous silicas with different morphologies were controllably prepared by sol-gel method with adjustable ratio of dual template,and they were further impregnated with aqueous solution of nickel nitrate,followed by calcination in air.The synthesized silica supports and supported nickel samples were characterized using N_2-adsorption/desorption,X-ray diffraction(XRD),H_2 temperature-programmed reduction(H_2-TPR),Scanning electron microscope(SEM),Transmission electron microscope(TEM) and thermo-gravimetric analysis(TGA-DTG) techniques.The Ni nanoparticles supported on shell-like silica are highly dispersed and yielded much narrower nickel particle-size than those on other mesoporous silica.The methane reforming with dioxide carbon reaction results showed that Ni nanoparticles supported on shell-like silica carrier exhibited the better catalytic performance and catalytic stability than those of nickel catalyst supported on other silica carrier.The thermo-gravimetric analysis on used nickel catalysts uncovered that catalyst deactivation depends on the type and nature of the coke deposited.The heterogeneous nature of the deposited coke was observed on nickel nanoparticles supported on spherical and peanut-like silica.Much narrower and lower TGA derivative peak was founded on Ni catalyst supported on the shell-like silica. | Fei Huang Rui Wang Chao Yang Hafedh Driss Wei Chu Hui Zhang | 2016 | Journal of Energy Chemistry2016，25，4： | 4 |
| 3 | 用于乙苯氧化脱氢制苯乙烯铝-硼催化剂:铝硼组成及制备方法对催化剂性能的影响(英文)显示文摘采用溶胶-凝胶(SG)法合成了不同摩尔比的Al-B催化剂(Al-10B与Al-35B).在450-500℃,乙苯(EB)接触时间为0.54 g-cat.s.cm-3的条件下,在氧气和水蒸气存在下对这些催化剂进行催化乙苯脱氢反应.利用NH3-TPD质谱分析了Al-B催化剂的酸性.扫描电镜图像显示,硼在氧化铝中负载量达15%(Al-15b)时仍分布很好,而在较高的硼含量(Al-25B和Al-35B)催化剂中观察到硼聚集.从本质上讲,在Al和Al-10B催化剂上观察到强度非常弱(Tmax≤125℃)的酸位,使得EB转化率和苯乙烯产率很低.另一方面,在Al-25B和Al-35B催化剂酸位较弱(Tmax≤180℃),因而EB转化率较高.然而,在弱-中等强度酸位的Al-15B催化剂上可以得到较高的苯乙烯产率(43.2%)和合理的EB转化率(46%).另外,采用共沉淀法(COP)和浸渍法(IMP)合成了Al-15B催化剂.IMP和COP催化剂的NH3-TPD-质谱分析结果发现,与NOx形成有关的酸位点在500℃时将EB转化率分别提高到66%和63%.然而,Al-B SG催化剂中的这些酸位降低,使得500℃时EB转化率为50%.当EB转化率为50%时,在Al-B IMP,Al-B COP和Al-SG催化剂上苯乙烯选择性分别为73%,82.5%和84%.因此,不同方法制备的Al-B催化剂,会产生不同强度和密度的酸位,从而影响苯乙烯的形成. | Nagaraju Pasupulety Muhammad A.Daous Abdulrahim A.Al-Zahrani Hafedh Driss Lachezar A.Petrov | 2019 | Chinese Journal of Catalysis2019，40，11： | 3 |
| 4 | Reusing Software: Issues and Research Directions 显示文摘 | Hafedh Mill Fatma Mili Ali Mili | 1995 | IEEE Transactions on Software Engineering1995，21，6： | 1 |
| 5 | Reusing Software:Issues and Re-search Directions显示文摘 | Hafedh Mili Fatma Mili Ali Mili | 1995 | IEEE Transaction on Software Engineering1995，21，6： | 1 |
| 6 | Development and application of a metric on semantic nets显示文摘 | Rada R Hafedh M Bicknell E | 1989 | IEEE Transactions on System Man and Cybernetics1989，19，1： | 1 |
| 7 | Locking Src/Abl Tyrosine Kinase Activities Regulate Cell Differentiation and Invasion of Human Cervical Cancer Cells Expressing E6/E7 Oncoproteins of High-Risk HPV显示文摘 | Amber Yasmeen Amal Alachkar Hafedh Dekhil Carlo Gambacorti-Passerini Ala-Eddin Al Moustafa Therese Deramaudt | 2010 | Journal of Oncology2010，，： | 1 |
| 8 | Fluctuations in the foreign ex- change market: How important are monetary policy shocks? 显示文摘 | Hafedh M | 2010 | International Economics2010，，81： | 1 |
| 9 | Molecular cloning, geneexpression analysis and structural modelling of the cellobiohydrolase Ifrom Penicillium occitanis 显示文摘 | Fatma Bhiria Ali Gargourib Mamdouh Ben Alic Hafedh Belghithb Monia Blibecha Semia Ellouz Chaabouni | 2010 | Enzyme and Microbial Technology ’2010，46，2： | 1 |
| 10 | Reusing Software:Issues and Research Directions显示文摘 | Hafedh Mili Fatma Mili Ali Mili | 1995 | IEEE Transactions on Software Engineering1995，，6： | 1 |
| 11 | Development and application of a metric on semantic显示文摘 | Rada R Hafedh M Ellen B | 1989 | IEEE Transaction on Systems Man and Cybemetics1989，19，1： | 1 |
| 12 | Reuse of Software:Issues and Research Directions显示文摘 | Hafedh M | 1995 | IEEE Trans on Software Engineering1995，21，6： | 1 |
| 13 | Development and application of a metric on semantic nets显示文摘 | RADA R HAFEDH M BICKNELL E BLETTNER M | 1989 | IEEE Transactions on System Man and Cybernetics1989，19，1： | 1 |
| 14 | Reusing Software:Issues and Research Directions显示文摘 | Hafedh Mili Fatma Mili Ali Mili | 1999 | IEEE Transactions on Software Engineering1999，21，6： | 1 |
| 15 | Reusing software:issues and research directions显示文摘 | HAFEDH M FATMA M ALI M | 1995 | IEEE Transactions on Software Engineering1995，21，6： | 1 |
| 16 | Association between Osteocalcin, Metabolic Syndrome, and Cardiovascular Risk Factors: Role of Total and Undercarboxylated Osteocalcin in Patients with Type 2 Diabetes显示文摘 | Assim A. Alfadda Afshan Masood Shaffi Ahamed Shaik Hafedh Dekhil Michael Goran Mario Maggi | 2013 | International Journal of Endocrinology2013，，： | 1 |
| 17 | Effects of dietary protein on growth and body composition of Nile tilapia显示文摘 | Al Hafedh Y S | | 0，，： | 1 |
| 18 | Has exchange rate pass-through really declined? Evidence from Canada显示文摘 | Hafedh Bouakez Nooman Rebei | 2008 | Journal of International Economics2008，，2： | 1 |
| 19 | Terms of trade and current account fluctuations: The Harberger–Laursen–Metzler effect revisited显示文摘 | Hafedh Bouakez Takashi Kano | 2007 | Journal of Macroeconomics2007，，1： | 1 |
| 20 | Performance of plastic biofiher media with different configuration in a water recirculation system for the culture of Nile tilapia (Oreochromis niloticus) 显示文摘 | Al- HAFEDH Y S ALAM A ALAM A M | 2003 | Aquacultural Engineering2003，29，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员