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| 1 | Piper sarmentosum as an antioxidant on oxidative stress in human umbilical vein endothelial cells induced by hydrogen peroxide显示文摘Endothelial cell death due to increased reactive oxygen species(ROS) may contribute to the initial endothelial injury,which promotes atherosclerotic lesion formation.Piper sarmentosum(PS),a natural product,has been shown to have an antioxidant property,which is hypothesized to inhibit production of ROS and prevent cell injury.Thus,the present study was designed to determine the effects of PS on the hydrogen peroxide(H2O2)-induced oxidative cell damage in cultured human umbilical vein endothelial cells(HUVECs).In this experiment,HUVECs were obtained by collagenase perfusion of the large vein in the umbilical cord and cultured in medium M200 supplemented with low serum growth supplementation(LSGS).HUVECs were treated with various concentrations of H2O2(0-1000 μmol/L) and it was observed that 180 μmol/L H2O2 reduced cell viability by 50% as denoted by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay.Using the above concentration as the positive control,the H2O2-induced HUVECs were concomitantly treated with various concentrations(100,150,250 and 300 μg/ml) of three different extracts(aqueous,methanol and hexane) of PS.Malondialdehyde(MDA),superoxide dismutase(SOD),catalase(CAT) and glutathione peroxidase(GPX) levels showed a significant increase(P<0.05) in HUVECs compared to the negative control.However,PS extracts showed a protective effect on HUVECs from H2O2-induced cell apoptosis with a significant reduction in MDA,SOD,CAT and GPX levels(P<0.05).Furthermore,PS had exhibited ferric reducing antioxidant power with its high phenolic content.Hence,it was concluded that PS plays a beneficial role in reducing oxidative stress in H2O2-induced HUVECs. | Abdul Hamid HAFIZAH Zakaria ZAITON Amom ZULKHAIRI Adenan MOHD ILHAM Megat Mohd Nordin NOR ANITA Abdullah Mahdy ZALEHA | 2010 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2010，11，5： | 13 |
| 2 | Shale characteristics impact on Nuclear Magnetic Resonance (NMR) fluid typing methods and correlations显示文摘The development of shale reservoirs has brought a paradigm shift in the worldwide energy equation.This entails developing robust techniques to properly evaluate and unlock the potential of those reservoirs.The application of Nuclear Magnetic Resonance techniques in fluid typing and properties estimation is well-developed in conventional reservoirs.However,Shale reservoirs characteristics like pore size,organic matter,clay content,wettability,adsorption,and mineralogy would limit the applicability of the used interpretation methods and correlation.Some of these limitations include the inapplicability of the controlling equations that were derived assuming fast relaxation regime,the overlap of different fluids peaks and the lack of robust correlation to estimate fluid properties in shale.This study presents a state-of-the-art review of the main contributions presented on fluid typing methods and correlations in both experimental and theoretical side.The study involves Dual Tw,Dual Te,and doping agent's application,T1-T2,D-T2 and T2sec vs.T1/T2 methods.In addition,fluid properties estimation such as density,viscosity and the gas-oil ratio is discussed.This study investigates the applicability of these methods along with a study of the current fluid properties correlations and their limitations.Moreover,it recommends the appropriate method and correlation which are capable of tackling shale heterogeneity. | Mohamed Mehana Ilham El-monier | 2016 | Petroleum2016，2，2： | 11 |
| 3 | Chemical analysis and antioxidant content of various propolis samples collected from different regions and their impact on antimicrobial activities显示文摘Objective: To assess the antioxidant content, antimicrobial and antioxidant activities of various propolis samples. Methods: Seven propolis samples were collected from different locations in Morocco, which are characterized by different plant predominant vegetations. The resin, wax and balsam of hydroalcoholic extract of propolis content were identified, and the antioxidant content was analyzed with the use of HPLC and colorimetric methods. The antioxidant activity was assessed by DPPH, ABTS.^+ and ferric reducing power assays. The antimicrobial activity was assessed against bacterial species, including methicillin resistant Staphylococcus aureus and Candida albicans, and expressed as the minimal inhibitory concentration. Results: The propolis samples showed significant variations in the chemical composition and in the antioxidant or antimicrobial activities even when the samples were collected from the same location. Propolis with high resin and low wax content had high level of antioxidant compounds, and strong antioxidant and antimicrobial activities. Gram-positive bacteria, especially, methicillin resistant Staphylococcus aureus were more sensitive to all propolis samples than Gram-negative bacteria and Candida albicans. Conclusions: The chemical composition and the antioxidant and antimicrobial activities of various propolis samples are different and rely on the geographic and plant origin of propolis collection. Propolis samples with low wax and high resin content might be more suitable to be used in future preclinical or clinical investigations. | Soumaya Touzani Noori Al-Waili Nawal El Menyiy Bratko Filipic Adriana Pereyra Ilham EL Arabi Wail Al-Waili Badiaa Lyoussi | 2018 | Asian Pacific Journal of Tropical Medicine2018，11，7： | 2 |
| 4 | PEC thermography for imaging multiple cracks from rolling contact fatigue显示文摘 | John Wilson Guiyun Tian Ilham Mukriz Darryl Almond | 2011 | NDT and E International2011，，6： | 2 |
| 5 | Decision support for vehicle dispatching using genetic programming 显示文摘 | Benyahia Ilham Potvin Jean-Yves | 1998 | IEEE Transaction on System Man and Cybernetics1998，28，3： | 1 |
| 6 | Pulsed eddy current testing with var- iable duty cycle on rivet joints 显示文摘 | Ilham Zainal Abidin Catalin Mandache Gui Yuntian Maxim Morozov | 2009 | NDT&E Interna- tional2009，42，7： | 1 |
| 7 | Expression of adiponectin receptors in pancreatic β cells显示文摘 | Ilham Kharroubi Joanne Rasschaert Décio L Eizirik Miriam Cnop | 2003 | Biochemical and Biophysical Research Communications2003，，4： | 1 |
| 8 | Formation and use of coal combustion residues from three types of power plants burning illnois coals显示文摘 | Ilham Demir Randall E Hughes Philip J Demairs et at | 2001 | Fuel2001，80，： | 1 |
| 9 | Phenolic extract from Ocimum basilicum restores lipid metabolism in Triton WR-1339-induced hyperlipidemic mice and prevents lipoprotein-rich plasma oxidation显示文摘In this study we investigated the hypolipidemic and anti-lipoprotein-oxidation activities of phenolic extract from sweet basil a popular culinary herb.The hypolipidemic activity was studied in mice model injected intraperitoneally with Triton WR-1339 at a dose of 200 mg/kg body weight.The animals were grouped as follows:normolipidemic control group(n=8),hyperlipidemic control group(n=8)and phenolic extract-treated group(n=8)at a dose of 200 mg/kg body weight.After 7 h and 24 h treatment,the oral administration of the phenolic extract exerts a significant reduction of plasma total cholesterol,triglycerides and LDL-cholesterol concentrations(P<0.001).On the other hand,we demonstrated that the phenolic extract prevents plasma lipid oxidation by 16%(P<0.001),20%(P<0.001),32%(P<0.001)and 44%(P<0.001)at a doses of 10,25,50 and 100g/mL,respectively.The results were compared with ascorbic acid used as standard synthetic antioxidant.HPLC analysis shows that the extract contains 4 major phenolics and is especially rich in rosmarinic acid.This finding indicates that the phenolic extract might be beneficial in lowering hyperlipidemia and preventing atherosclerosis. | Ilham Touiss Saloua Khatib Oussama Bekkouch Souliman Amrani Hicham Harnafi | 2017 | Food Science and Human Wellness2017，6，1： | 1 |
| 10 | On-line measurement of the reaidence time distribution in screw extruders显示文摘 | Hu Guohua Ilham K Claude P | 1999 | Polymer Engineering and Science1999，139，5： | 1 |
| 11 | New process for catalyst- free biodiesel production using subcritical acetic acid and supercritical methanol显示文摘 | SAKA S ISAYAMA Y ILHAM Z | 2010 | Fuel2010，89，7： | 1 |
| 12 | On-line measurement of the residence time distribution in screw extruders显示文摘 | HU Guo-hua Ilham Kadri | 1999 | Polymer Engineering & Science1999，39，5： | 1 |
| 13 | Enzyme inhibi- tion-based biosensors for food safety and environmental monitoring 显示文摘 | Aziz Amine Hasna Mohammad Ilhame Bourais | 2006 | Biosensors and Bioelectronics2006，21，： | 1 |
| 14 | E-Alliance: A Negotiation Infrastructure for Virtual Alliances显示文摘 | Stefania Castellani Jean Marc Andreoli Mihnea Bratu Olivier Boissier Ilham Alloui Karim Megzari | 2003 | Group Decision and Negotiation2003，，2： | 1 |
| 15 | Kinetics of pyrol-ysis and combustion of oil shale sample from thermogravimetric data显示文摘 | Shabbar Syed Rana Qudaih Ilham Talab | 2011 | Fuel2011，90，4： | 1 |
| 16 | Adaptive quantized target tracking in wireless sensor networks显示文摘 | Mansouri M Ilham O Snoussi H | 2011 | Wireless Networks2011，17，7： | 1 |
| 17 | Dimethyl carbonate as potential reactant in non-catalytic biodiesel production by supercritical method显示文摘 | Ilham Z Saka S | 2009 | Bioresource Technology2009，100，： | 1 |
| 18 | Kinetics of pyrolysisand combustion of oil shale sample from thermogravi- metric data 显示文摘 | Shabbar S Rana Q Ilham T | 2011 | Fuel2011，90，4： | 1 |
| 19 | Adaptive quantized target tracking in wireless sensor networks 显示文摘 | Mansouri M Ilham O Snoussi H | 2011 | Wireless Networks2011，17，7： | 1 |
| 20 | Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected to a ground motion显示文摘A new structural optimization method of coupled extended finite element method and bound constrained quadratic optimization method(XFEM-BCQO)is adopted to quantify the optimum values of four design parameters for a circular tunnel lining when it is subjected to earthquakes.The parameters are:tunnel lining thickness,tunnel diameter,tunnel lining concrete modulus of elasticity and tunnel lining concrete density.Monte-Carlo sampling method is dedicated to construct the meta models so that to be used for the BCQO method using matlab codes.Numerical simulations of the tensile damage in the tunnel lining due to a real earthquake in the literature are created for three design cases.XFEM approach is used to show the cracks for the mentioned design cases.The results of the BCQO method for the maximum design case for the tunnel tensile damage was matching the results obtained from XFEM approach to a fair extent.The new coupled approach manifested a significant capability to predict the cracks and spalling of the tunnel lining concrete under the effects of dynamic earthquakes. | Nazim Abdul NARIMAN Ayad Mohammad RAMADAN Ilham Ibrahim MOHAMMAD | 2019 | Frontiers of Structural and Civil Engineering2019，13，6： | 1 |
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