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| 1 | 超声引导下经皮微波凝固术治疗小乳腺癌的临床研究显示文摘动态增强联合扩散加权乳腺磁共振多参数成像评估活体导管内原位癌级别
摘要目的研究动态增强联合扩散加权MR成像特征用于活体内鉴别高分化和非高分化导管原位癌诊断的模型。材料与方法本研究获得机构审查委员会批准和病人的知情同意,符合HIPAA要求。回顾性分析了52例病人共55个单纯导管原位癌病灶(19例高分化,36例非高分化), | H. Rahbar S. C. Partridge W. B. DeMartini R.L. Gutierrez K. H. Allison S. Peacock 秦乃姗 | 2012 | 国际医学放射学杂志2012，35，4： | 30 |
| 2 | Resistance of Helicobacter pylori to furazolidone and levofloxacin: A viewpoint显示文摘In their review, Arslan et al[1] did not describe the status of Helicobacter pylori(H. pylori) treatment with furazolidone and the resistance to this antibiotic. We have presented different surveys showing the resistance of H. pylori to furazolidone from Asia and South America. The resistance rates varied but were mostly low(< 5%). There are not enough data on its efficacy and resistance in the United States and Europe. H. pylori mutations occurring in the oor D gene, including A041 G, A122 G, C349A(G), A78 G, A112 G, A335 G, C156 T and C165 T, and in the por D gene, including G353 A, A356 G, C357 T, C347 T, C347 G and C346 A, have been indicated to be possibly related to the observed resistance. Additionally, to complete Arslan et al 's statement regarding levofloxacin resistance, it should be noted that compound mutations of N87 A, A88 N and V65 I at codon Asn-87 were recently observed in the gyr A gene for the first time. However, the results on these topics are not sufficient, and more worldwide studies are suggested. | Mohammad Zamani Arash Rahbar Javad Shokri-Shirvani | 2017 | World Journal of Gastroenterology2017，23，37： | 10 |
| 3 | Omeprazole-based triple therapy with low-versus high-dose of clarithromycin plus amoxicillin for H pylori eradication in Iranian population显示文摘AIM: To investigate the efficacy and tolerability of H pylori eradication in an omeprazole-based triple therapy with high-and low-dose of clarithromycin and amoxicillin. METHODS: One hundred and sixty H pylori positive patients were randomly assigned to two groups based on the following 2 wk investigation; (1) group A or low-dose regimen received omeprazole 20 mg b.i.d, clarithromycin 250 mg b.i.d and amoxicillin 500 mg b.i.d; and (2) group B or high-dose regimen received omeprazole 20 mg b.i.d, clarithromycin 500 mg b.i.d and amoxicillin 1000 mg b.i.d. During the study H pylori status was assessed by histology and rapid urease test prior and by 13C-urea breath test 6 wk after the therapy. Standard questionnaires were administered to determine the compliance to treatment and possible adverse events of therapy. Data were subject to χ2 to compare the eradication rates in the two groups. The significant level of 95% (P ≤ 0.05) was considered statistically different. RESULTS: We found that the per-protocol eradication rate was 88% (68/77) in group A, and 89% (67/75) in group B. The intension-to-treat eradication rate was 85% (68/80) in group A and 83.75% (67/80) in group B. Overall adverse events were 26% in group A and 31% in group B. The adverse events were generally mild in nature and tolerated well in both groups with a compliance of 98% in group A vs 96% in group B. CONCLUSION: The omeprazole-based low dose regimen of clarithromycin and amoxicillin for two weeks in H pylori eradication is as effective as high dose regimen in Iranian population. | Ali Asghar Keshavarz Homayoon Bashiri Mahtab Rahbar | 2007 | World Journal of Gastroenterology2007，13，6： | 3 |
| 4 | Modeling of fluid-induced vibrations and identification of hydrodynamic forces on flow control valves显示文摘Dynamics and vibration of control valves under flow-induced vibration are analyzed. Hydrodynamic load characteristics and structural response under flow-induced vibration are mainly influenced by inertia, damping, elastic, geometric characteristics and hydraulic parameters. The purpose of this work is to investigate the dynamic behavior of control valves in the response to self-excited fluid flow. An analytical and numerical method is developed to simulate the dynamic and vibrational behavior of sliding dam valves, in response to flow excitation. In order to demonstrate the effectiveness of proposed model, the simulation results are validated with experimental ones. Finally, to achieve the optimal valve geometry, numerical results for various shapes of valves are compared. Rounded valve with the least amount of flow turbulence obtains lower fluctuations and vibration amplitude compared with the flat and steep valves. Simulation results demonstrate that with the optimal design requirements of valves, vibration amplitude can be reduced by an average to 30%. | Samad Mehrzad Ilgar Javanshir Ahmad Rahbar Ranji Seyyed Hadi Taheri | 2015 | Journal of Central South University2015，22，7： | 3 |
| 5 | Effects of humidity on shear behavior of bamboo显示文摘Bamboo is a naturally occurring biological composite, however its microstructure and hence its properties are very complex compared to the manmade composites. Due to optimization, it can be assumed that the variation in properties along the thickness of the culm be a smooth transition for better bonding strength between layers and to prevent non uniformity in stress concentration. As a consequence,biological structures are complicated and functionally graded. Hence, a realistic model that can capture the mechanical performance of bamboo is valuable in future design of robust multifunctional composites.This paper presents the results of experimental and numerical studies on the torsional(shear) properties of bamboo. The hierarchical and multi-scale structure of bamboo and the distribution of micro-scale fibers are revealed via laser scanning and atomic force microscopy. This information was incorporated into a finite element model to analyze the mechanical behavior of bamboo under torsion and to estimate the shear modulus of bamboo along the fibers. Moreover, the effects of humidity and therefore water content on the mechanical properties of bamboo were evaluated by performing torsion tests on samples maintained in environments with different humidities. Increasing the humidity does not cause a drop in the shear modulus, however, a jump in the shear modulus did occur at around 60% humidity. Results of this study indicate that the highest strength values in samples occurred in environments with humidity levels between 60% and 80% and undergo a significant drop after that. In higher humidities, the samples behave more ductile. | Sina Askarinejad Peter Kotowski Faezeh Shalchy Nima Rahbar | 2015 | Theoretical & Applied Mechanics Letters2015，5，6： | 3 |
| 6 | CuO-nanoparticles modified carbon paste electrode for square wave voltammetric determination of lidocaine: Comparing classical and Box–Behnken optimization methodologies显示文摘In this research, copper oxide nanoparticles modified carbon paste electrode was developed for the voltammetric determination of lidocaine. The square wave voltammogram of lidocaine solution showed a well-defined peak between +0.5 and +1.5 V. Instrumental and chemical parameters influencing voltammetric response were optimized by both one at a time and Box–Behnken model of response surface methodology. The results revealed that there was no significant difference between two methods of optimization. The linear range was 1–2500 μmol L^(-1)(Ip= 0.11 C_(LH)+ 17.38, R^2= 0.999). The LOD and LOQ based on three and ten times of the signal to noise(S/N) were 0.39 and 1.3 μmol L^(-1)(n = 10),respectively. The precision of the method was assessed for 10 replicate square wave voltammetry(SWV)determinations each of 0.05, 0.5 and 1 μmol L^(-1) of lidocaine showing relative standard deviations 4.1%,3.7% and 2.1%, respectively. The reliability of the proposed method was established by application of the method for the determination of lidocaine in two pharmaceutical preparations, namely injection and gel. | Nadereh Rahbar Zahra Ramezani Jamalaldin Ghanavati | 2016 | Chinese Chemical Letters2016，27，6： | 2 |
| 7 | In vitro anti-leishmanial activity of methanolic extracts of Calendula officinalis flowers, Datura stramonium seeds, and Salvia officinalis leaves显示文摘AIM: The anti-leishmanial activity of methanolic extracts of Calendula officinalis flowers, Datura stramonium seeds, and Salvia officinalis leaves against extracellular(promastigote) and intracellular(amastigote) forms of Leishmania major were evaluated in this study. METHOD: In the first stage, promastigote forms of L. major, were treated with different doses of the plant extracts in a 96-well tissue-culture microplate and IC50 values for each extract were measured with colorimetric MTT assay. In the second stage, macrophage cells were infected with L. major promastigotes. Infected macrophages were treated with plant extracts. Then the macrophages were stained with Gimsa and the number of infected macrophages and amastigotes were counted with a light microscope. RESULTS: The results indicated that the plant extracts inhibited the growth of promastigotes and amastigotes of L. major. Inhibitory concentrations(IC50) for promastigote assay were 108.19, 155.15, and 184.32 μg·mL-1 for C. officinalis flowers, D. stramonium seeds and S. officinalis, respectively. The extracts also reduced the number of amastigotes in macrophage cells from 264 for control group to 88, 97, and 102 for test groups. Although the anti-leishmanial activity of the extracts were not comparable with the standard drug, miltefosine; but they showed significant efficiency in reducing the number of amastigotes in macrophages, in comparison with the control group(P < 0.001). These plant extracts had lower toxicity compared with miltefosine. CONCLUSION: This study demonstrates the potential efficacy of the methanolic extracts of C. officinalis flowers, D. stramonium seeds, and S. officinalis leaves to control of cutaneous leishmaniasis. | Banafsheh Nikmehr Habib Ghaznavi Amir Rahbar Samira Sadr Saeed Mehrzadi | 2014 | Chinese Journal of Natural Medicines2014，12，6： | 2 |
| 8 | Human cytomegalovirus:a possible activator of the immune system in polymyositis and dermatomyositis 显示文摘 | Fasth AER Rahbar A Dastmalchi M | 2007 | Am Coll Rheumatol2007，1671，： | 1 |
| 9 | Antimicrobial-re- sistant Shigella infections from Iran :an overlooked problem? 显示文摘 | Tajbakhsh M Garcia Migura L Rahbar M | 2012 | J Antimicrob Chemother2012，67，5： | 1 |
| 10 | Role of vascu-lar endothelial growth factor A in children with acquiredairway stenosis显示文摘 | Rahbar R Brown L F Folkman J | 2007 | Ann Otol Rhinol Laryngol2007，116，6： | 1 |
| 11 | CCL5 promotes proliferation of MCF-7 cells through mTOR-dependent mRNA translation 显示文摘 | Murooka Tr Rahbar R Fish EN | 2009 | Biochem Biophysic Res Commu2009，387，2： | 1 |
| 12 | Activation of telomerase by human cytomegalovirus 显示文摘 | Strt K Liu C Rahbar A Zhu Q Liu L Wolmer- Solberg N Lou F Liu Z Shen J Jia J Kyo S Bj6rkholm M Sj6berg J S6derberg-Naucl6r C Xu D | 2009 | J Natl Cancer Inst2009，101，7： | 1 |
| 13 | Benign versus malignant solid breast masses: US differentiation 显示文摘 | Rahbar G Sic AC Hansen GC | 1999 | Radiology1999，213，3： | 1 |
| 14 | Synthesis of optimal feedback guidance law for homing missiles using neural networks显示文摘 | Rahbar N Bahrami M | 2000 | Optimal Control Applications & Methods2000，21，： | 1 |
| 15 | Effects of silicone gel on bum scars显示文摘 | Momeni M Hafezi F Rahbar H | 2009 | Bums2009，35，1： | 1 |
| 16 | Analysis of Likelihood of Lower Head Failure and Ex -Vessel Fuel Coolant Interaction for APIO00 显示文摘 | Esmaili H Khatib - Rahbar M | 2005 | Nuclear Engineering and Design2005，235，： | 1 |
| 17 | Cross- sectional assessment reveals high diabetes prevalence among newly- diagnosed tuberculosis cases显示文摘 | RESTREPO B I CAMERLIN A J RAHBAR M H | 2011 | Bull World Health Organ2011，89，5： | 1 |
| 18 | The discovery of glyeated hemoglobin : a major event in the study of nonenzymatic chemistry in biological systems显示文摘 | Rahbar S | 2005 | Ann NY Aead Sei2005，1043，： | 1 |
| 19 | High prevalence of extended-spectrum beta-lactamaseproducing Klebsiella pneumoniae in a tertiary care hospital in Tehran,Iran显示文摘 | Mehrgan H Rahbar M Arab-Halvaii Z | 2010 | J Infect Dev Ctries2010，4，3： | 1 |
| 20 | Nasal Glioma and Encephalocele:diagnosis and management显示文摘 | Rahbar R Resto VA Robson CD | 2003 | Laryngoscope2003，113，12： | 1 |
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