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408篇 您的检索式:作者名="FARHADI"
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1Human papillomavirus in squamous cell carcinoma of esophagus in a high-risk population显示文摘AIM: To investigate the relation of human papillomavirus (HPV) and esophageal squamous cell carcinoma (ESCC)in Iranian patients as compared to normal controls.METHODS: Using MY09/MY11 consensus primers, we compared the prevalence of a HPV L1 gene in tumor tissues from 38 ESCC cases and biopsied tissues from 38endoscopically normal Iranian individuals. We also compared the presence of HPV16 and HPV18 in the same samples using type-specific E6/E7 primers.RESULTS: Fourteen (36.8%) of the 38 ESCC samples but only 5 (13.2%) of the 38 control samples were positive for the HPV L1 gene (P = 0.02). Five (13.2%) of the ESCC samples but none of the control samples were positive for the HPV16 E6/E7gene (P = 0.05). Three (7.9%) of the ESCC samples and 5 (13.2%) of the control samples were positive for the HPV18 E6/E7gene (P = 0.71).CONCLUSION: Our data are consistent with HPV DNA studies conducted in other high-risk areas for ESCC. HPV should be considered as a potential factor contributing to the high incidence of ESCC in Iran and other high-incidence areas of the world.Mohammad Farhadi Zahra Tahmasebi Shahin Merat Farin Kamangar Dariush Nasrollahzadeh Reza Malekzadeh 2005World Journal of Gastroenterology2005,11,8:16
2Mucosal mast cells are pivotal elements in inflammatory bowel disease that connect the dots:Stress,intestinal hyperpermeability and inflammation显示文摘Mast cells (MC) are pivotal elements in several physiological and immunological functions of the gastro- intestinal (GI) tract. MC translate the stress signals that has been transmitted through brain gut axis into release of proinflammatory mediators that can cause stimulation of nerve endings that could affect afferent nerve terminals and change their perception, affect intestinal motility, increase intestinal hyperpermeability and, in susceptible individuals, modulate the inflammation. Thus, it is not surprising that MC are an important element in the pathogenesis of inflammatory bowel disease and non inflammatory GI disorders such as IBS and mast cell enterocolitis.Ashkan Farhadi Jeremy Z Fields Ali Keshavarzian 2007World Journal of Gastroenterology2007,13,22:15
3ZnAl_2O_4@SiO_2纳米复合催化剂用于无溶剂条件下乙酸酐与醇、酚和胺的乙酰化反应(英文)显示文摘A ZnAl2O4@SiO2 nanocomposite was prepared from metal nitrates and tetraethyl orthosilicate by the sol-gel process,and characterized by X-ray diffraction,Fourier transform infrared,transmission electron microscopy,and N2 adsorption-desorption measurements.The nanocomposite was tested as a heterogeneous catalyst for the acetylation of alcohols,phenols,and amines under solvent-free conditions.Under optimized conditions,efficient acetylation of these substrates with acetic anhydride over the ZnAl2O4@SiO2 nanocomposite was obtained.Acetylation of anilines and primary aliphatic amines proceeded rapidly at room temperature,while the reaction time was longer for the acetylation of alcohols and phenols,showing that an amine NH2 group can be selectively acetylated in the presence of alcoholic or phenolic OH groups.The catalyst can be reused without obvious loss of catalytic activity.The catalytic activity of the ZnAl2O4@SiO2 nanocomposite was higher than that of pure ZnAl2O4.The method gives high yields,and is clean,cost effective,compatible with substrates having other functional groups and it is suitable for practical organic synthesis.Saeed Farhadi Kosar Jahanara 2014催化学报2014,35,3:3
4Evidence that chronic alcohol exposure promotes intestinal oxidative stress, intestinal hyperpermeability and endotoxemia prior to development of alcoholic steatohepatitis in rats显示文摘Ali Keshavarzian Ashkan Farhadi Christopher B. Forsyth Jayanthi Rangan Shriram Jakate Maliha Shaikh Ali Banan Jeremy Z. Fields 2009Journal of Hepatology2009,,3:3
5Pre-sowing treatment for breaking dormancy in Acer velutinum Boiss. seed lots显示文摘Acer velutinum Boiss is a valuable tree species native to Iran, and its seeds possess physiological dormancy that hampers seedling production in the nursery for large-scale reforestation efforts. The aim of this study was to determine the optimal dormancy breaking treatments for A. velutinum seeds. We conducted a factorial experiment involving six seed lots collected along an elevation gradient from 300 to 1800 m at 300 m interval and four cold-moist stratification periods (0, 4, 8 and 16 weeks) at 4℃ and 70% relative humidity. The result shows that the germination of cold-moist stratified seeds was significantly (p < 0.0001) higher than the control for all seed lots. The highest germination capacity was recorded after 16 weeks of cold-moist stratification for all seed lots (68% 88% depending on the seed lot) except those collected from mid altitude sites (600 and 900 m) that germinated equally well (≥ 75%) after 4and 8-week of clod-moist stratification compared to the other seed lots. The mean germination time was significantly shorter (12 to 19 days, depending on the seed lot) for seeds stratified for 16 weeks than for untreated seeds. It can be concluded that: (1) cold-moist stratification for 16 weeks is the best pre-sowing treatment for breaking dormancy in A. velutinum seeds; and (2) seeds should be collected from mid altitude sites (600 and 900 m) to get more than 80% germination within 15 days, and these seed lots even required shorter cold-moist stratification period(eight weeks) than other seed lots.Mostafa Farhadi Mulualem Tigabu Alireza Ghasemi Arian Mehdi Sharifani Abolfazl Daneshvar Per Christer Oden 2013Journal of Forestry Research2013,24,2:2
6Convective heat transfer from two rotating circular cylinders in tandem arrangement by using lattice Boltzmann method显示文摘The numerical investigation of the two-dimensional laminar flow past two ro- tating circular cylinders in the tandem arrangement is conducted by the lattice Boltzmann method. The numerical strategy is used for dealing with curved and moving boundaries of the second-order accuracy for velocity and temperature fields. The effects of various rotational speed ratios and gap spacing are studied with the Reynolds number of 100 and the Prandtl number of 0.71. A varied range of rotational speed ratios are investigated for four different gap spacing, i.e., 3.0, 1.5, 0.7, and 0.2. The results show that, for the first cylinder, the lift and drag coefficients for large gap spacing are similar to those for a single cylinder; for the second cylinder, the lift coefficient descends with the increase in the angular velocity for all gap spacing, while the drag coefficient ascends except for the gap spacing of 3.0. The results of the averaged periodic Nusselt number on the surface of the cylinders show that, for small distances between the cylinders and low angular velocities, conduction is a dominant mechanism of heat transfer, but for large distances and high angular velocities, convection is the main mechanism of heat transfer.H. NEMATI M. FARHADI K. SEDIGHI M. M. PIROUZ N. N. ABATARI 2012Applied Mathematics and Mechanics(English Edition)2012,33,4:2
7A selective, sensitive and label-free visual assay of fructose using anti-aggregation of gold nanoparticles as a colorimetric probe显示文摘A new convenient colorimetric sensor for fructose based on anti-aggregation of citrate-capped gold nanoparticles(Au NPs) is presented. 4-Mercaptophenylboronic acid(MPBA) induces the aggregation of Au NPs, leading to a color change from red to blue. Fructose as a potent competitor has strong affinity for MPBA and a borate ester is formed between MPBA and fructose. There is an obvious color change from blue to red with increasing the concentration of fructose. The anti-aggregation effect of fructose on Au NPs was seen by the naked eye and monitored by UV–vis spectra. Our results showed that the absorbance ratio(A_(519)/A_(640)) was linear with fructose concentration in the range of 0.032–0.96 μmol/L(R^2= 0.996), with a low detection limit of 0.01 μmol/L(S/N = 3). Notably, a highly selective recognition of fructose was shown against other monosaccharide and disaccharide(glucose, mannose, galactose,lactose and saccharose). With anti-aggregation assays higher selectivity is achievable. The results of this work provide a rapid method for evaluating the quantitative analysis of fructose in human plasma at physiologically meaningful concentrations and at neutral pH. The proposed procedure can be used as an efficient method for the precise and accurate determination of fructose.Foroogh Keshvari Morteza Bahram Khalil Farhadi 2016Chinese Chemical Letters2016,27,6:2
8Combined inhibition of vascular endothelial growth factor and platelet derived growth factor signaling: effects on the angiogenesis, microcirculation, and growth of orthotopic malignant gliomas显示文摘Farhadi MR Capelle HH Erber R 2005J Neurosurg2005,102,2:1
9Superhy- drophobic surfaces: are they really ice-repellent 显示文摘Kulinich S A Farhadi S Nose K 2011Langmuir2011,27,:1
10High prevalence of coeliac disease in apparently healthy Iranian blood donors显示文摘Bijan Shahbazkhani Reza Malekzadeh Masoud Sotoudeh Ketaion Fayaz Moghadam Mohammad Farhadi Reza Ansari Amin Elahyfar Kamran Rostami 2003European Journal of Gastroenterology & Hepatology2003,,5:1
11Effect of a Splitter Plate on Flow Over a Semi-Circular Cylinder 显示文摘Farhadi M Sedighi K Fattahi E 2010Proc IME G J Aero Eng2010,224,3:1
12Numerical simulation of fluid flow aroundtwo rotating side by side circular cylinders by lattice Boltzmann method显示文摘Nemati H Sedighi K Farhadi M Pirouz M M Fattahi E 2010International Journal ofComputational Fluid Dynamics2010,24,34:1
13Superhydro- phobic Surfaces: Are They Really Ice-repel ent? 显示文摘KULINICH S A FARHADI S NOSE K 2011Lang- muir2011,27,:1
14Identifi- cation and subtyping of Francisella by pyrosequencing and signature matching of 16S rDNA fragments 显示文摘Jacob D Wahab T Edvinsson B Peterzon A Boskani T Farhadi L Barduhn A Grunow R Sandstrom G 2011Lett Appl Microbiol2011,53,6:1
15Comparison of COD removal fxom pharmaceutical wastewater by electrocoagula- tion, photoelectrocoagulation, peroxi-electrocoagulation and perox- i-photoelectrocoagulation processes显示文摘Sajjad Farhadi Behnoush Aminzadeh Ali Torabian 2012Joumal of Hazardous Mate- rials2012,,:1
16Experimental investigation of explosive welding of cp-titanium/AISI304stainless steel 显示文摘AKBARI M S FARHADI S P 2009Materials&Design2009,30,3:1
17Erodible conducting polymers for potential biomedical appylications 显示文摘ZELIKIN A N LYNN D FARHADI J 2002Angew Chem Int Ed Engl2002,41,1:1
18Lattice Boltzmann simulation of nanofluidin lid-driven cavity显示文摘Nemati H Farhadi M Sedighi K Fattahi E Darzi A A R 2010International Communications in Heat and Mass Transfer2010,37,10:1
19Superhydrophobic surface:Are they really ice-repellent?显示文摘Kulinich S A Farhadi S Nose K 2011Langmuir2011,27,1:1
20A stable movingparticle semi-implicit method for free surface flows显示文摘ATAIE-ASHTIANI B FARHADI L 2006Fluid Dynamics Research2006,38,:1
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