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74篇 您的检索式:作者名="Erfani"
    题名 作者 年代 出处 被引量
1Exercise preconditioning exhibits neuroprotective effects on hippocampal CA1 neuronal damage after cerebral ischemia显示文摘Recent evidence has suggested the neuroprotective effects of physical exercise on cerebral ischemic injury. However, the role of physical exercise in cerebral ischemia-induced hippocampal damage remains controversial. The aim of the present study was to evaluate the effects of pre-ischemia treadmill training on hippocampal CA1 neuronal damage after cerebral ischemia. Male adult rats were randomly divided into control, ischemia and exercise + ischemia groups. In the exercise + ischemia group, rats were subjected to running on a treadmill in a designated time schedule(5 days per week for 4 weeks). Then rats underwent cerebral ischemia induction th rough occlusion of common carotids followed by reperfusion. At 4 days after cerebral ischemia, rat learning and memory abilities were evaluated using passive avoidance memory test and rat hippocampal neuronal damage was detected using Nissl and TUNEL staining. Pre-ischemic exercise significantly reduced the number of TUNEL-positive cells and necrotic cell death in the hippocampal CA1 region as compared to the ischemia group. Moreover, pre-ischemic exercise significantly prevented ischemia-induced memory dysfunction. Pre-ischemic exercise mighct prevent memory deficits after cerebral ischemia through rescuing hippocampal CA1 neurons from ischemia-induced degeneration.Nabi Shamsaei Mehdi Khaksari Sohaila Erfani Hamid Rajabi Nahid Aboutaleb 2015Neural Regeneration Research2015,10,8:7
2Synthesis, characterization and TL properties of SrSO_4:Dy,Tb nanocrystalline phosphor显示文摘SrSO4:Dy,Tb nanocrystalline with crystalline size in the range of 44–54 nm was prepared by co-precipitation method followed by thermal treatment and characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), energy dispersive X-ray spectroscopy(EDX) and UV-visible spectrometry. Our results provided direct evidence of incorporation of impurities into nanocrystalline SrSO4. The thermoluminescence(TL) properties of SrSO4:Dy,Tb nanocrystalline pellets irradiated with gamma rays at different doses were studied. The TL glow curve of SrSO4:Dy,Tb nanocrystalline pellets had a prominent peak at around 490 K and a small peak at around 430 K. The major peak in the TL glow curve was almost resolved from other peaks, which was analyzed using Chen's peak shape method to determine the TL kinetic parameters such as activation energy, E and kinetic order, b. The intensity of main dosimetric peak of SrSO4:Dy,Tb nanocrystalline pellets at around 490 K increased linearly with the increase in gamma dose. The TL response was linear in the range of 0.1–7 kGy. These properties made it a candidate as a dosimeter to be used for estimating the high dose of gamma rays.Khadijeh Rezaee Ebrahim Saraee Amin Aghay Kharieky Maryam Erfani 2014Journal of Rare Earths2014,32,11:2
3可重复使用的新型催化剂的合成、表征及在绿色条件下催化Suzuki和Heck反应:锚合在磁性纳米多孔的MCM-41上Pd(0)希夫碱络合物(英文)显示文摘将Pd希夫碱络合物固定在磁性的MCM-41表面上,做为环境友好且可循环使用的新型多相纳米催化剂,并采用红外光谱、振动探针式磁强计、能量散射谱、透射电镜、扫描电镜、热重、电感耦合等离子体发射光谱和X-射线衍射等对其进行了全面的表征.然后将该催化剂用于以PEG为绿色溶剂的一步法Suzuki和Heck合成反应中,均以较高收率得到目标产物.该法主要优点为反应时间短、反应条件绿色友好、操作简便、无需使用有毒的有机溶剂、催化剂使用量低,且底物适用性广.更为重要的是,通过外部磁场即可方便地将催化剂从反应混合物中分离出来,可重复使用数次而活性和稳定性未见明显下降.Mohsen Nikoorazm Farshid Ghorbani Arash Ghorbani-Choghamarani Zahra Erfani 2017Chinese Journal of Catalysis2017,38,8:2
4Intracellular CTLA4 and Regulatory T Cells in Patients with Laryngeal Squamous Cell Carcinoma显示文摘Nasrollah Erfani Behzad Khademi Mohammad Reza Haghshenas Zahra Mojtahedi Bijan Khademi Abbas Ghaderi 2013Immunological Investigations2013,,2:2
5Increase of regulatory T cells in metastatic stage and CTLA-4 over expression in lymphocytes of patients with non-small cell lung cancer (NSCLC)显示文摘Nasrollah Erfani Shayesteh Mofakhami Mehrabadi Mohammad Ali Ghayumi Mohammad Reza Haghshenas Zahra Mojtahedi Abbas Ghaderi Davar Amani 2012Lung Cancer2012,,2:1
6Increase of regu- latory T cells in metastatic stage and CTLA-4 over expression in lymphocytes of patients with non-small cell lung cancer显示文摘Erfani N Ghayumi MA Haghshenas MR 2012Lung Cancer2012,77,2:1
7Increase of regula- tory T cells in metastatic stage and CTLA-4 over expression in lymphocytes of patients with non-small cell lung cancer ( NSCLC ) 显示文摘Erfani N Mehrabadi SM Ghayumi MA 2012Lung Cancer2012,77,2:1
8Network management: emerging trends and challenges显示文摘ERFANI S LAWRENCE V B MALEK M 1999Bell Labs Technical Journal1999,4,4:1
9Increase of regulatory T cells in metastatic stage and CTLA4 over expression in lymphocytes of patients with non-small cell lung cancer (NSCLC) 显示文摘Erfani Nasrollah Mehrabadi Shayesteh Mofakhami Ghayumi Mohammad Ali 2012Lung Cancer2012,77,2:1
10Evaluation of Genotype × Environment Interaction in Rice Based on AMMI Model in Iran显示文摘Identification of high-yielding stable promising rice lines and determination of suitable areas for rice lines would be done by additive main effects and multiplicative interaction(AMMI) model. Seven promising rice genotypes plus two check varieties Shiroudi and 843 were analyzed using a randomized complete block design with three replications in three consecutive years(2012, 2013 and 2014). Homogenous error variance was indicated in the nine environments for grain yield. The combined analysis of variance indicated significant effects of environment, genotype and genotype × environment(GE) interactions on grain yield. The significant effect of GE interaction reflected on the differential response of genotypes in various environments and demonstrated that GE interaction had remarkable effect on genotypic performance in different environments. The application of AMMI model for partitioning the GE interaction effects showed that only the first two terms of AMMI were significant based on Gollob's Ftest. The lowest AMMI-1 was observed for G7, G2 and G6. G7 and G6 had higher grain yield. According to the first eigenvalue, which benefits only the first interaction principal component scores, G1, G6, G2 and G9 were the most stable genotypes. The values of the sum of first two interaction principal component scores could be useful in identifying genotype stability, and G6, G5 and G2 were the most dynamic stable genotypes. AMMI stability value introduced G6 as the most stable one. According to AMMI biplot view, G6 was high yielding and highly stable genotype. In conclusion, this study revealed that GE interactions were an important source of rice yield variation, and its AMMI biplots were forceful for visualizing the response of genotypes to environments.Peyman SHARIFI Hashem AMINPANAH Rahman ERFANI Ali MOHADDESI Abouzar ABBASIAN 2017Rice science2017,24,3:1
11Air pollution and the housing market: A neural network approach显示文摘Mohamad Shaaf G. Rod Erfani 1996International Advances in Economic Research1996,,4:1
12Increase of regulatory T cells in metastatic stage and CTLA-4 over expression in lymphocytes of patients with non-small cell lung cancer (NSCLC)显示文摘Erfani N Mehrabadi SM Ghayumi MA 2012Lung Cancer2012,77,2:1
13CTLA4 gene variations and haplotypes in patients with lung cancer显示文摘Khaghanzadeh N Erfani N Ghayumi MA 2010Cancer Genet Cytogenet2010,196,2:1
14Integrin-Associated CD151 Drives ErbB2-Evoked Mammary Tumor Onset and Metastasis显示文摘Xinyu Deng Qinglin Li John Hoff Marian Novak Helen Yang Hongyan Jin Sonia F. Erfani Chandan Sharma Pengcheng Zhou Isaac Rabinovitz Arnoud Sonnenberg Yajun Yi Peter Zhou Christopher S. Stipp David M. Kaetzel Martin E. Hemler Xiuwei H. Yang 2012Neoplasia2012,,8:1
15Plasma actuator: influence of dielectric surface temperature显示文摘Erfani R Zare B H Kontis K 2012Experimental Thermal and Fluid Science2012,42,:1
16Modeling of forest soil and litter health using disturbance and landscape heterogeneity indicators in northern Iran显示文摘This paper focuses on the indicators of soil and litter health, disturbance, and landscape heterogeneity as a tool for prediction of ecosystem sustainability in the northern forests of Iran. The study area was divided into spatial homogenous sites using slope, aspect, and soil humidity classes. Then a range of sites along the disturbance gradient was selected for sampling. Chemical and physical indicators of soil and litter health were measured at random points within these sites. Structural equation modeling(SEM) was applied to link six constructs of landscape heterogeneity, three constructs of disturbance(harvest, livestock, and human accessibility), and soil and litter health. The results showed that with decreasing accessibility, the total N and organic matter content of soil increased and effective bulk density decreased. Harvesting activities increased soil organic matter. Therefore, it is concluded that disturbances through harvesting and accessibility inversely affect the soil health. Unexpectedly, it was found that the litter total C and C:N ratio improved with an increase in the harvest and accessibility disturbances, whereas litter bulk density decreased. Investigation of tree composition revealed that in the climax communities, which are normally affected more by harvesting activities, some species like Fagus orientalis Lipsky with low decomposition rate are dominant. The research results showed that changes in disturbance intensity are reflected in litter and soil indicators, whereas the SEM indicated that landscape heterogeneity has a moderator effect on the disturbance to both litter and soil paths.Malihe ERFANI Abdolrassoul SALMANMAHINY Afshin DANEHKAR Vahid ETEMAD 2017Journal of Mountain Science2017,14,9:1
17Immune profiles of CD4+ lymphocyte subsets in breast cancer tumor draining lymph nodes显示文摘Faghih Z Erfani N Haghshenas MR eta| 2014Immunol Lett2014,158,12:1
18A collocation methord based on bernoulli operational matrix for numerical solution of generalized pantograph equation 显示文摘Tohidi E Bhrawy A H Erfani K 2013Applied Mathematical Modelling2013,37,6:1
19Increase of regulatory T ceils in metastatic stage and CTLA-4 over expression in lymphocytes of patients with non-small cell lung cancer ( NSCLC ) 显示文摘Erfani N Mehrabadi SM Ghayumi MA 2012Lung Cancer2012,77,2:1
20考虑管状构件屈曲恰当建模的海洋导管架结构完整性评估——以Resalat导管架为例显示文摘In the present research,results of buckling analysis of 384 finite element models,verified using three different test results obtained from three separate experimental investigations,were used to study the effects of five parameters such as D/t,L/D,imperfection,mesh size and mesh size ratio.Moreover,proposed equations by offshore structural standards concerning global and local buckling capacity of tubular members including former API RP 2A WSD and recent API RP 2A LRFD,ISO 19902,and NORSOK N-004 have been compared to FE and experimental results.One of the most crucial parts in the estimation of the capacity curve of offshore jacket structures is the correct modeling of compressive members to properly investigate the interaction of global and local buckling which leads to the correct estimation of performance levels and ductility.Achievement of the proper compressive behavior of tubular members validated by experimental data is the main purpose of this paper.Modeling of compressive braces of offshore jacket platforms by 3D shell or solid elements can consider buckling modes and deformations due to local buckling.ABAQUS FE software is selected for FE modeling.The scope of action of each of elastic buckling,plastic buckling,and compressive yielding for various L/r ratios is described.Furthermore,the most affected part of each parameter on the buckling capacity curve is specified.The pushover results of the Resalat Jacket with proper versus improper modeling of compressive members have been compared as a case study.According to the results,applying improper mesh size for compressive members can under-predict the ductility by 33%and under-estimate the lateral loading capacity by up to 8%.Regarding elastic stiffness and post-buckling strength,the mesh size ratio is introduced as the most effective parameter.Besides,imperfection is significantly the most important parameter in terms of critical buckling load.Mohammad Hadi Erfani 2022Journal of Marine Science and Application2022,21,4:1
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