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Sciatic nerve injury alters the spatial arrangement of neurons and glial cells in the anterior horn of the spinal cord

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Neural Regeneration Research 2019年第10期14卷 1833-1840页

作者： Ali Rashidiani-Rashidabadi mohammad Hassan Heidari Ensieh Sajadi Fatemeh Hejazi Fatemeh Fadaei Fathabady Yousef Sadeghi Abbas Aliaghaei Amir Raoofi mohammad-amin abdollahifar Reza Mastery Farahni Department of Biology and Anatomical Sciences School of MedicineShahid Beheshti University of Medical SciencesTehranIran Department of Polymer Engineering and Color Technology Amirkabir University of Technology (Tehran Polytechnic)TehranIran

The spatial arrangement of the cell is important and considered as underlying mechanism for mathematical modeling of cell to cell *** ability of cells to take on the characteristics of other cells in an organism,it is important to understand the dynamical behavior of the *** method implements experimental parameters of the cell-cell interaction into the mathematical simulation of cell *** purpose of this research was to explore the three-dimensional spatial distribution of anterior horn cells in the rat spinal cord to examine differences after sciatic nerve *** Sprague-Dawley male rats were assigned to control and axotomy *** weeks after surgery,the anterior horn was removed for first-and second-order stereological ***-order stereological techniques were applied to estimate the pair correlation and cross-correlation functions using a dipole probe superimposed onto the spinal cord *** findings revealed 7% and 36% reductions in the mean volume and total number of motoneurons,respectively,and a25% increase in the neuroglial cell number in the axotomized rats compared to the control *** contrast,the anterior horn volume remained *** results also indicated a broader gap in the pair correlation curve for the motoneurons and neuroglial cells in the axotomized rats compared to the control *** finding shows a negative correlation for the distribution of motoneurons and neuroglial cells in the axotomized *** cross-correlation curve shows a negative correlation between the motoneurons and neuroglial cells in the axotomized *** findings suggest that cellular structural and functional changes after sciatic nerve injury lead to the alterations in the spatial arrangement of motoneurons and neuroglial cells,finally affecting the normal function of the central nervous *** experimental protocol was reviewed and approved by the Animal Ethics Committee of Shahid Beheshti Unive

关键词： sciatic nerve injury spatial arrangement spinal cord motorneuron neuroglial cells axotomy anterior horn

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Investigation of asphaltene deposition under dynamic flow conditions

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Petroleum Science 2016年第2期13卷 340-346页

作者： Farhad Salimi Javad Salimi Mozafar abdollahifar Department of Chemical Engineering Faculty of Basic Sciences Kermanshah Branch Islamic Azad UniversityKermanshah Iran Young Research and Elite Club Kermanshah Branch Islamic Azad University Kermanshah Iran

Asphaltene deposition is one of the most seri- ous problems, which usually occurs in oil wells, petroleum production, oil processing, and transportation facilities. Deposition of heavy organic components, especially asphaltene, can lead to wellbore blockage and impacts well economics due to reduction in oil production. Therefore, it is necessary to pay more attention to finding some solution to overcome this problem. In this study, a pipe-loop apparatus for investigation of oil stability was employed to measure deposition thickness using a thermal method. The effects of many factors such as oil type, oil temperature, oil velocity, inhibitors, and solvents on asphaltene deposition were investigated. The results showed that the deposition increased with the increasing value of the colloidal insta- bility index. Besides, the deposition thickness increased with the decreasing velocity of oil, but did not change with oil temperature. In addition, n-heptane could result in more deposition; however, toluene had no effect on the deposi- tion. Branched dodecyl benzene sulfonic acid （Branched DBSA） and Linear DBSA as inhibitors decreased the rate of asphaltene deposition.

关键词： Asphaltene Deposition Dynamic flow Pipe-loops Inhibitors

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Enabling Extraordinary Rate Performance for Poorly Conductive Oxide Pseudocapacitors

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Energy & Environmental Materials 2020年第3期3卷 405-413页

作者： Mozaffar abdollahifar Hao-Wen Liu Chia-Hsin Lin Yu-Ting Weng Hwo-Shuenn Sheu Jyh-Fu Lee Meng-Lin Lu Yen-Fa Liao Nae-Lih Wu Department of Chemical Engineering National Taiwan UniversityTaipei 106Taiwan National Synchrotron Radiation Research Center Hsinchu 30076Taiwan Taiwan Beamline Office at SPring-8 1-1-1 KoutoMikazukiSayoHyogo 679-5198Japan Advanced Research Center for Green Materials Science and Technology National Taiwan UniversityTaipei 10617Taiwan

Pseudocapacitive transition metal oxides(PTMOs)have the advantages of high areal capacitance and material density suitable for high-energy supercapacitor devices,but they are typically marred by insufficient rate performance,which in turn deteriorates cyclic stability at high current *** the example of spinel manganese oxide,herein we demonstrate that a pseudocapacitive oxide electrode of remarkable rate performance and cyclic stability may be realized by adopting oxide nanocrystallites,which are derived based on a novel solution chemistry,and carbon additive(CA)nanoparticles with highly uniform of size *** controlling the particle morphology and size distribution of the active material and conductive additive(CA)in the nanometer range can maximize the density of active material-CA-electrolyte three-phase contact points,thus facilitating synchronized electron and cation flow for the completion of surface faradaic *** resultant Mn3O4 pseudocapacitive electrode exhibits rate capability and cycle stability,including 60%capacity retention at 60 A g-1 and no capacity fade over 100000 cycles under dynamic current densities,far superior to the state-of-the-art PTMO *** electrode design strategy is in general applicable to pseudocapacitors containing poorly conductive active materials.

关键词： high-rate performance pseudocapacitor electrodes single nanoparticles three-phase contact point ultra-long cycle life

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