|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Synthesis of Gd_2O_3 nanoparticles:using bulk Gd_2O_3 powders as precursor显示文摘Gd2O3nanoparticles were synthesized from the commercial bulk Gd2O3 powders via a simple electrochemical method. The synthesized powders were characterized by means of X-ray powder diffraction(XRD),scanning electron microscopy(SEM), transmission electron microscopy(TEM) and Fourier transform infrared(FTIR) spectroscopy. The effects of solution p H on the morphological features of the sample were studied. The strategy developed in this study offers significant advantages for the synthesis of Gd2O3 nanoparticles from the bulk Gd2O3 powders compared with the conventional routes. From SEM observations, the size of the Gd2O3 nanoparticles is estimated to be significantly smaller than70 nm. | Taher Yousefi Meisam Torab-Mostaedi Mostafa Ghasemi Amir Ghadirifar | 2015 | Rare Metals2015，34，8： | 4 |
| 2 | Pre-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 | 2013 | Journal of Forestry Research2013，24，2： | 2 |
| 3 | Achievements and trends of solid oxide fuel cells in clean energy field: a perspective review显示文摘The main concerns in the world today,especially in the energy field,are subjected to clean,efficient,and durable sources of energy.These three aspects are the main goals that scientist are paying attention to.However,the various types of energy resources include fossil and sustainable ones,but still some challenges are chasing these kinds from energy conversion,storage,and efficiency.Hence,the most reliable and considered energy resource nowadays is the utilized one which is as highly efficient,clean,and everlasting as possible.So,in this review,an attempt is made to highlight one of the promising types as a clean and efficient energy resource.Solid oxide fuel cell(SOFC)is the most efficient type of the fuel cell types involved with hydrogen and hydrocarbon-based fuels,especially when it works with combined heat and power(CHP).The importance of this type is due to its nature of work as conversion tool from chemical to electrical for generation of power without noise,pollution,and can be safely handled. | Abdalla M.ABDALLA Shahzad HOSSAIN Pg MohdIskandr PETRA Mostafa GHASEMI Abul K.AZAD | 2020 | Frontiers in Energy2020，14，2： | 1 |
| 4 | Process optimization of batch biosorption of lead using Lactobacillius bulgaricus in an aqueous phase system using response surface methodology显示文摘 | Mehdi Sedighi Mostafa Ghasemi Sedky Hassan Wan Daud Manal Ismail Elgorban Abdallah | 2012 | World Journal of Microbiology and Biotechnology2012，，5： | 1 |
| 5 | Imprinted polymer particles for selenium uptake: Synthesis, characterization and analytical applications显示文摘 | Mostafa Khajeh Yadollah Yamini Ensieh Ghasemi | 2007 | Analytica Chimica Acta2007，587，： | 1 |
| 6 | Micromechanical simulation and experimental investigation of aluminum-based nanocomposites显示文摘Ceramic reinforced metal matrix nanocomposites are widely used in aerospace and auto industries due to their enhanced mechanical and physical properties.In this research,we investigate the mechanical properties of aluminum/Nano-silica composites through experiments and simulations.Aluminum/Nanosilica composite samples with different weight percentages of silica nanoparticles are prepared via powder metallurgy.In this method,Nano-silica and aluminum powders are mixed and compressed in a mold,followed by sintering at high temperatures.Uniaxial tensile testing of the nanocomposite samples shows that adding one percent of Nano-silica causes a considerable increase in mechanical properties of nanocomposite compared to pure aluminum.A computational micromechanical model,based on a representative volume element of aluminum/silica nanocomposite,is developed in a commercial finite element software.The model employs an elastoplastic material model along with a ductile damage model for aluminum matrix and linear elastic model for nano-silica particles.Via careful determination of model parameters from the experimental results of pure aluminum samples prepared by powder metallurgy,the proposed computational model has shown satisfactory agreement with experiments.The validated computational model can be used to perform a parametric study to optimize the microstructure of nanocomposite for enhanced mechanical properties. | Mohammad Javad Ghasemi Mohammad Silani Ali Maleki Mostafa Jamshidian | 2021 | Defence Technology(防务技术)2021，17，1： | 0 |
| 7 | The effect of antioxidants on increased oocyte Competence in IVM: a review显示文摘In vitro maturation(IVM)is considered a potential assisted reproductive technology that is a safer and simpler alternative to conventional in vitro fertilization.It is primarily used in patients with impaired oocyte maturation and for the treatment of infertile women who are at risk of fertility loss.In addition,IVM is currently used mainly in polycystic ovarian syndrome patients with a high ovarian response and is stll considered an experimental option in fertility preservation.Producing highly competent oocytes during IVM is considered a key step in the success of in vitro production(IVP)of embryos.Some factors,such as culture medium conditions and other supplements,have a significant impact on oocyte IVM performance.One of the known disruptors of oocyte developmental competence in IVP is oxidative stress(Os),which is caused by an imbalance between the production and neutralization of reactive oxygen species(ROS).In vitro conditions induce supraphysiological ROS levels due to exposure to an oxidative environment and the isolation of the oocyte from the follicle protective antioxidant milieu.Given the importance of Os in oocyte competence,the establishment of standardized antioxidant IVM systems is critical for improving the overall success of IVP.This review focuses on the main antioxidants tested to protect oocytes against OS in IVM. | Arezoo Solati Sina Taghvimi Zeinab Jamali Farzaneh Vahedi Mostafa Moazamfard Sedigheh Bahmyari Ahmad Movahedpour Hassan Ghasemi | 2023 | Reproductive and Developmental Medicine2023，7，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员