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279篇 您的检索式:作者名="KARIMZADEH"
    题名 作者 年代 出处 被引量
1Psycho-cognitive behavioral problems in sleep disordered children显示文摘Sleep disturbances are common in childhood and adolescence. Sleep problems in early infants tend to be persistent and prominent in preschool and school-aged children. Chronic sleep disorders, especially in young children may lead to neurobehavioral problems and psycho-cognitive impairment. Sleep difficulties may be the result of underlying medical conditions, (breathing disorders) or psychological problems. Research studies have shown the association between sleep disorders and day time cognitive impairment, behavioral problems, poor school performance and inattention in children. Appropriate diagnosis and early management of sleep disorders in children lead to improvement of neurocognitive function and behavioral problems in these children.Parvaneh Karimzadeh 2012Neural Regeneration Research2012,7,8:5
2The Relationship Between Developmental Accumulation of Leaf Soluble Proteins and Vernalization Response of Wheat(Triticum aestivum L.em. Thell)显示文摘The relationship between vernalization requirement and quantitative and qualitative changes in total leaf soluble proteins were determined in one spring(cv.Kohdasht) and two winter(cvs.Sardari and Norstar) cultivars of wheat(Triticum aestivum L.) exposed to 4°C.Plants were sampled on days 2,14,21 and 35 of exposure to 4°C.The final leaf number(FLN) was determined throughout the vernalization periods(0,7,14,24,and 35 d) at 4°C.The final leaf number decreased until days 24 and 35 in Sardari and Norstar cultivars,respectively,indicating the vernalization saturation at these times.No clear changes were detected in the final leaf number of Kohdash cultivar,verifying no vernalization requirement for this spring wheat cultivar.Comparing with control,clear cold-induced 2-fold increases in proteins quantity occurred after 48 h following the 4°C-treatment in the leaves of the both winter wheat cultivars but,such response was not detected in the spring cultivar.However,the electrophoretic protein patterns showed between-cultivar and between-temperature treatment differences.With increasing exposure time to 4°C,the winter cultivars tended to produce more HMW polypeptides than the spring cultivar.Similar proteins were induced in both Sardari and Norstar winter wheat cultivars,however,the long vernalization requirement in Norstar resulted in high level and longer duration of expression of cold-induced proteins compared to Sardari with a short vernalization requirement.These observations indicate that vernalization response regulates the expression of low temperature(LT) tolerance proteins and determines the duration of expression of LT-induced proteins.M Majdi G Karimzadeh S Mahfoozi 2009Agricultural Sciences in China2009,8,4:5
3Propane catalytic cracking on pretreated La-ZSM-5 zeolite during calcination for light olefins production显示文摘The purpose of this study was to increase light olefins yield and selectivity in catalytic cracking of propane. Pretreatment of ZSM-5 zeolite was performed during calcination. First, lanthanum was loaded on the catalyst by wet impregnation method and then the effect of parameters, such as temperature(400–800 oC), time(120–480 min) and type of stream, on La-ZSM-5 zeolite was examined during calcination using central composite design(CCD) method. Based on the proposed models, the optimized condition for maximizing selectivity of light olefins for air stream was 680 oC and 310 min and for the nitrogen stream was 735 oC and 173 min that under these conditions, selectivity amount increased 24% for nitrogen stream and 19% for air stream as compared with H-ZSM-5 catalyst. The synthesized catalysts were characterized by X-ray diffraction(XRD) and temperature-programmed desorption(TPD) techniques. According to the results of NH_3-TPD, as the temperature increased, the number of strong acid sites(specially Bronsted acid sites) reduced and resulted in increased production of light olefins as well as catalyst stability. Accordingly, stability of the samples calcined with nitrogen stream was higher than the samples calcined with the air stream.Roya Pouria Leyla Vafi Ramin Karimzadeh 2017Journal of Rare Earths2017,35,6:4
4增强LPG催化裂化催化剂ZSM-5稳定性的新方法:脱铝和负载硅(英文)显示文摘以碳纳米管为模板合成的带有介孔和微孔的ZSM-5分子筛具有不同的复合结构.用三氯乙酸(TCA)可选择性地将中孔的铝脱除.基于TCA分子大小,它可能只扩散到中孔中,因而使得微孔部分不脱铝.从分子筛结构中脱除铝原子导致催化剂中出现中空的空间.若将硅原子填充到空位中,那么介孔部分的结构会变得与硅酸盐类似,不具有催化性能.本文使用含硅的溶液来填充空位,将硅原子直接取代中孔结构中的铝原子.通过此特殊方法改变微孔和介孔的几何形状和性质,从而使改性HZSM-5上的积碳量从14%降低至3%.Leyla Vafi Ramin Karimzadeh 2016Chinese Journal of Catalysis2016,37,4:3
5Characterization of NbSi_2–Al_2O_3 nanocomposite coatings prepared with plasma spraying mechanically alloyed powders显示文摘The present study characterized NbS i2–Al2O3 nanocomposite powders plasma-sprayed on Ti–6Al–4Vsubstrates. The powders were agglomerated to obtain suitable particle sizes for spraying. The agglomerated powders were then plasma-sprayed using atmospheric plasma spraying. The structural transformations of the powders along with the morphological and mechanical changes of the coatings were examined by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, and hardness testing. The results showed that after plasma spraying, the grain size increased, and the lattice strain decreased. However, the grain size of this compound after spraying was still in the nanometer range. The coating was uniform and exhibited good adhesion to the substrate. The microhardness and fracture toughness of the nanocomposite coating were higher than those of a nanostructured NbS i2 coating.Zohreh Yazdani Fathallah Karimzadeh Mohammad-Hasan Abbasi Abbas Amini 2015International Journal of Minerals,Metallurgy and Materials2015,22,7:2
6The effect of gas mixture of post-oxidation on structure and corrosion behavior of plasma nitrided AISI 316 stainless steel显示文摘N. Karimzadeh E.G. Moghaddam M. Mirjani K. Raeissi 2013Applied Surface Science2013,,:2
7Deforestation effects on soil physical and chemical properties, Lordegan, Iran显示文摘Hajabbasi M A Jalalian A Karimzadeh H R 1997Plant and Soil1997,190,:1
8Prccipitation reactions in Magnesium-rate eaeth aIloys containing yttrium,gadolinium ordysprosium显示文摘Apps P J Karimzadeh H King J K 2003Scripta Materialia2003,48,:1
9Determinants of Profitability of Banking Sector in India显示文摘Majid Karimzadeh Jawed Akhtar S M Behzad Karimzadeh 2013South Asia Paper Transit Stud Rev2013,20,2:1
10Precipitation re- actions in magnesium-rare earth alloys containing yttrium, gado- linium or dysprosium 显示文摘APPS P J KARIMZADEH H KING J F 2003Scripta Materialia2003,48,:1
11Synthesis and formation mechanism of nanostructured NbAI3 intermetallic during mechanical alloying and a kinetic study on its formation显示文摘MOSTAAN H KARIMZADEH F ABBASI M H 2012Ther mochimica Acta2012,529,:1
12Mechanochemical assisted synthesis of Cu (Mo)/AI2 03 nanocomposite 显示文摘Sabooni S Mousavi T Karimzadeh F 2010Journal of Alloys and Compounds2010,497,12:1
13The Effect of Gas Mixture of Post-Oxidation on Structure and Corresion- behavior of Plasma Nilrided AISI 316 Stainless Steel显示文摘Karimzadeh N Moghaddam E G Mirjani M 2013Ap- plied Surface Science2013,283,:1
14Deforestation effects on soil physical and chemical properties, Lordegan, lran 显示文摘Hajabbasi M A Jalalian A Karimzadeh H R 1997Plant and Soil1997,190,2:1
15Study on solid-state reactions of nanocrystalline TiAl synthesized by mechanical alloying 显示文摘FOROUZANMELU N KARIMZADEH F ENAYATI M H 2009Journal of Alloys and Compounds2009,471,12:1
16Sugar outeffect in aqueous two phase systems composed of acetoni-trile and carbohydrate显示文摘Mokhtarani B Karimzadeh R Amini M H 2008J Biochem Eng2008,38,2:1
17Compar- ison of mild and microdose GnRH agonist flare protocols on IVF outcome in poor responders 显示文摘Karimzadeh MA Mashayekhy M Mohammadian F 2011Arch Gynecol Obstet2011,283,5:1
18Fabrication and evaluation of mechanical and tribological properties of boron carbide reinforced aluminum matrix nanocomposites显示文摘E. Mohammad Sharifi F. Karimzadeh M.H. Enayati 2011Materials and Design2011,,6:1
19Precipitation reactions in magnesium-rare earth alloys containing Yttrium,Gadolinium or Dysprosium显示文摘Apps P J Karimzadeh H King J F Lorimer G W 2003Scripta Materia2003,48,:1
20Phase compositions in magnesium-rare earth alloys containing yttrium, gadolini- um or dysprosium 显示文摘Apps P J Karimzadeh H King J F 2003Scripta Mater2003,48,5:1
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