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| 1 | Shale hydration inhibition characteristics and mechanism of a new amine-based additive in water-based drilling fluids显示文摘In this work,shale hydration Inhibition performance of tallow amine ethoxylate as a shale stabilizer in water based drilling fluid,was investigated through these tests:bentonite hydration inhibition test,bentonite sedimentation test,drill cutting recovery test,dynamic linear swelling test,wettability test,isothermal water adsorption test,and zeta potential test.The results showed that bentonite particles are not capable of being hydrated or dispersed in the mediums containing tallow amine ethoxylate;tallow amine ethoxylate had shown a comparable and competitive inhibition performance with potassium chloride as a common shale stabilizer in drilling industry.Some amine functional groups exist in tallow amine ethoxylate structure which are capable of forming hydrogen bonding with surfaces of bentonite particles.This phenomenon decreased the water adsorption on bentonite particles'surfaces which results in reduction of swelling.Tallow amine ethoxylate is also compatible with other common drilling fluid additives. | Pezhman Barati Khalil Shahbazi Mosayyeb Kamari Amir Aghajafari | 2017 | Petroleum2017，3，4： | 5 |
| 2 | Material and regenerative properties of an osteon-mimetic cortical bone-like scaffold显示文摘The objective of this work was to fabricate a rigid,resorbable and osteoconductive scaffold by mimicking the hierarchical structure of the cortical bone.Aligned peptide-functionalize nanofiber microsheets were generated with calcium phosphate(CaP)content similar to that of the natural cortical bone.Next,the CaP-rich fibrous microsheets were wrapped around a microneedle to form a laminated microtube mimicking the structure of an osteon.Then,a set of the osteon-mimetic microtubes were assembled around a solid rod and the assembly was annealed to fuse the microtubes and form a shell.Next,an array of circular microholes were drilled on the outer surface of the shell to generate a cortical bone-like scaffold with an interconnected network of Haversian-and Volkmann-like microcanals.The CaP content,porosity and density of the bone-mimetic microsheets were 240 wt%,8%and 1.9 g/ml,respectively,which were close to that of natural cortical bone.The interconnected network of microcanals in the fused microtubes increased permeability of a model protein in the scaffold.The cortical scaffold induced osteogenesis and vasculogenesis in the absence of bone morphogenetic proteins upon seeding with human mesenchymal stem cells and endothelial colony-forming cells.The localized and timed-release of morphogenetic factors significantly increased the extent of osteogenic and vasculogenic differentiation of human mesenchymal stem cells and endothelial colony-forming cells in the cortical scaffold.The cortical bonemimetic nature of the cellular construct provided balanced rigidity,resorption rate,osteoconductivity and nutrient diffusivity to support vascularization and osteogenesis. | Danial Barati Ozan Karaman Seyedsina Moeinzadeh Safaa Kader Esmaiel Jabbari | 2019 | Regenerative Biomaterials2019，6，2： | 5 |
| 3 | 问荆提取物页岩水化膨胀抑制剂性能及防膨机理显示文摘提出将问荆提取物作为页岩水化膨胀抑制剂,通过室内实验研究了其抑制页岩水化膨胀的性能,与氯化钾和聚胺进行了对比,并分析了其防膨机理。膨润土水化抑制实验、膨润土沉淀实验、动态线性膨胀实验、滚动回收实验和吸附量测定实验结果表明:问荆提取物可以抑制膨润土的水化,阻止黏土矿物在溶液中均匀分散,减小膨润土的膨胀,抑制钻屑在水中破碎和分散,且与氯化钾和聚胺性能相当。对问荆提取物的防膨机理进行分析后发现:其成分中具有活性烃基的物质与膨润土颗粒表面间氢键缔合,降低了膨润土颗粒表面的吸水率,从而抑制膨润土膨胀。除了具有良好的防膨能力,问荆提取物获取容易、价格低廉,且不会破坏生态环境,是一种理想的页岩水化膨胀抑制剂。 | BARATI Pezhman KESHTKAR Sadegh AGHAJAFARI Amirhossein SHAHBAZI Khalil MOMENI Ali | 2016 | 石油勘探与开发2016，43，3： | 4 |
| 4 | 模具几何形状对AZ80镁合金非等通道横向挤压的影响(英文)显示文摘非等通道横向挤压(NECLE)是一种新工艺,与等通道横向挤压(ECLE)相比,采用非等通道横向挤压工艺可以得到更加细化的晶粒。对该模具设计工艺进行了数值模拟和实验研究。发现数值模拟和实验结果之间存在良好的相关性,并进行了全面的有限元分析。考虑了不同的模具几何参数,并研究了这些参数对诱导塑性应变、应力分布、速度场和载荷的影响。结果表明,当具有一组合适的模具几何参数时,与等通道横向挤压相比,采用非等通道横向挤压工艺可以得到高诱导有效应变和更均匀应变分布。 | Faramarz FERESHTEH-SANIEE Mohammad ASGARI Mahmoud BARATI Sayed Mahmoud PEZESHKI | 2014 | Transactions of Nonferrous Metals Society of China2014，24，10： | 4 |
| 5 | A tri-level programming model for attack-resilient control of power grids显示文摘The significance of modern power grids is acknowledged every time there is a major threat. This paper proposes the novel approaches to aid power system planner to improve power grid resilience by making appropriate hardening strategies against man-made attack or natural hazards. The vulnerability indices are introduced, which return the most vulnerable component in the system based on a tri-level defender-attacker-operator(DAO) interdiction problem which solves iteratively. The output of DAO is the set of hardening strategies that optimally allocated along the network to mitigate the impact of the worst-case damages. By repeating DAO problem based on the proposed algorithm, the various crafted attack is imposed on the system, and the defender's behavior demonstrates how an element is vulnerable to threats. The WSCC 9-bus, IEEE 24-bus, and IEEE 118-bus systems are employed to evaluate the model performance.The counter-intuitive results are proven by the proposed robust hardening strategy, which shows how the hardening strategy should be allocated to improve power network resilience against threats. | Hamzeh DAVARIKIA Masoud BARATI | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，5： | 4 |
| 6 | Analysis of dynamic wave model for flood routing in natural rivers显示文摘Flooding is a common natural disaster that causes enormous economic, social, and human losses. Of various flood routing methods, the dynamic wave model is one of the best approaches for the prediction of the characteristics of floods during their propagations in natural rivers because all of the terms of the momentum equation are considered in the model. However, no significant research has been conducted on how the model sensitivity affects the accuracy of the downstream hydrograph. In this study, a comprehensive analysis of the input parameters of the dynamic wave model was performed through field applications in natural rivers and routing experiments in artificial channels using the graphical multi-parametric sensitivity analysis (GMPSA). The results indicate that the effects of input parameter errors on the output results are more significant in special situations, such as lower values of Manning's roughness coefficient and/or a steeper bed slope on the characteristics of a design hydrograph, larger values of the skewness factor and/or time to peak on the channel characteristics, larger values of Manning's roughness coefficient and/or the bed slope on the space step, and lower values of Manning's roughness coefficient and/or a steeper bed slope on the time step and weighting factor. | Reza BARATI Sajjad RAHIMI Gholam Hossein AKBARI | 2012 | Water Science and Engineering2012，5，3： | 3 |
| 7 | Lattice Boltzmann Simulation of CO_2 Transport in Kerogen Nanopores——An Evaluation of CO_2 Sequestration in Organic-Rich Shales显示文摘Organic-rich shale resources remain an important source of hydrocarbons considering their substantial contribution to crude oil and natural gas production around the world. Moreover, as part of mitigating the greenhouse gas effects due to the emissions of carbon dioxide(CO_2) gas, organic-rich shales are considered a possible alternate geologic storage. This is due to the adsorptive properties of organic kerogen and clay minerals within the shale matrix. Therefore, this research looks at evaluating the sequestration potential of carbon dioxide(CO_2) gas in kerogen nanopores with the use of the lattice Boltzmann method under varying experimental pressures and different pore sizes. Gas flow in micro/nano pores differ in hydrodynamics due to the dominant pore wall effects, as the mean free path(λ) of the gas molecules become comparable to the characteristic length(H) of the pores. In so doing, the traditional computational methods break down beyond the continuum region, and the lattice Boltzmann method(LBM) is employed. The lattice Boltzmann method is a mesoscopic numerical method for fluid system, where a unit of gas particles is assigned a discrete distribution function(f). The particles stream along defined lattice links and collide locally at the lattice sites to conserve mass and momentum. The effects of gas-wall collisions(Knudsen layer effects) is incorporated into the LBM through an effective-relaxationtime model, and the discontinuous velocity at the pore walls is resolved with a slip boundary condition. Above all, the time lag(slip effect) created by CO_2 gas molecules due to adsorption and desorption over a time period, and the surface diffusion as a result of the adsorption-gradient are captured by an adsorption isotherm and included in our LBM. Implementing the Langmuir adsorption isotherm at the pore walls for both CO_2 gas revealed the underlying flow mechanism for CO_2 gas in a typical kerogen nano-pore is dominated by the slip flow regime. Increasing the equilibrium pressure, increases the mass flux due to adsorption. On the other hand, an increase in the nano-pore size caused further increase in the mass flux due to free gas and that due to adsorbed gas. Thus, in the kerogen nano-pores, CO_2 gas molecules are more adsorptive indicating a possible multi-layer adsorption. Therefore, this study not only provides a clear understanding of the underlying flow mechanism of CO_2 in kerogen nano-pores, but also provides a potential alternative means to mitigate the greenhouse gas effect(GHG) by sequestering CO_2 in organic-rich shales. | Sherifa Cudjoe Reza Barati | 2017 | Journal of Earth Science2017，28，5： | 3 |
| 8 | Distribution of impurity elements in slag–silicon equilibria for oxidative refining of metallurgical silicon for solar cell applications显示文摘 | M.D. Johnston M. Barati | 2010 | Solar Energy Materials and Solar Cells2010，，12： | 3 |
| 9 | Effect of slag basicity and oxygen potential on the distribution of boron and phosphorus between slag and silicon显示文摘 | M.D. Johnston M. Barati | 2010 | Journal of Non-Crystalline Solids2010，，3： | 3 |
| 10 | Electromechanical buckling behavior of smart piezoelectrically actuated higher-order size-dependent graded nanoscale beams in thermal environment显示文摘In the present work,thermo-electro-mechanical buckling behavior of functionally graded piezoelectric(FGP)nanobeams is investi-gated based on higher-order shear deformation beam theory.The FGP nanobeam is subjected to four types of thermal loading including uniform,linear,and sinusoidal temperature rise as well as heat conduction through the beam thickness.Thermo-electro-mechanical properties of FGP nanobeam are supposed to change continuously in the thickness direction based on power-law model.To consider the influences of small-scale sizes,Eringen’s nonlocal elasticity theory is adopted.Applying Hamilton’s princi-ple,the nonlocal governing equations of an FGP nanobeam in thermal environments are obtained and are solved using Navier-type analytical solution.The significance of various parameters,such as thermal loadings,external electric voltage,power-law index,nonlocal parameter,and slenderness ratio on thermal buck-ling response of size-dependent FGP nanobeams is investigated. | Farzad Ebrahimi Mohammad Reza Barati | 2016 | International Journal of Smart and Nano Materials2016，7，2： | 2 |
| 11 | Economic Assessment and Review of Waterless Fracturing Technologies in Shale Resource Development: A Case Study显示文摘Our database tracking of USA water usage per well indicates that traditionally shale operators have been using, on average 3 to 6 million gallons of water; even up to 8 million for the entire life cycle of the well based on its suitability for re-fracturing to stimulate their long and lateral horizontal wells. According to our data, sourcing, storage, transportation, treatment, and disposal of this large volume of water could account for up to 10% of overall drilling and completion costs. With increasingly stringent regulations governing the use of fresh water and growing challenges associated with storage and use of produced and flowback water in hydraulic fracturing, finding alternative sources of fracturing fluid is already a hot debate among both the scientific community and industry experts. On the other hand, waterless fracturing technology providers claim their technology can solve the concerns of water availability for shale development. This study reviews high-level technical issues and opportunities in this challenging and growing market and evaluates key economic drivers behind water management practices such as waterless fracturing technologies, based on a given shale gas play in the United States and experience gained in Canada. Water costs are analyzed under a variety of scenarios with and without the use of(fresh) water. The results are complemented by surveys from several oil and gas operators. Our economic analysis shows that fresh water usage offers the greatest economic return. In regions where water sourcing is a challenge, however, the short-term economic advantage of using non-fresh water-based fracturing outweighs the capital costs required by waterless fracturing methods. Until waterless methods are cost competitive, recycled water usage with low treatment offers a similar net present value(NPV) to that of sourcing freshwater via truck, for instance. | Iman Oraki Kohshou Reza Barati Meaghan Cassey Yorro Tim Leshchyshyn Adebola T. Adejumo Usman Ahmed Imre Kugler Murray Reynolds James McAndrew | 2017 | Journal of Earth Science2017，28，5： | 2 |
| 12 | Temperature distribution effects on buckling behavior of smart heterogeneous nanosize plates based on nonlocal four-variable refined plate theory显示文摘This work presents a theoretical study for thermo-mechanical buckling of size-dependent magneto-electro-thermo-elastic func-tionally graded(METE-FG)nanoplates in thermal environments based on a refined trigonometric plate theory.Temperature field has uniform,linear,and nonlinear distributions across the thick-ness.Nonlinear thermal loadings are considered as heat conduc-tion(HC)and sinusoidal temperature rise(STR).A power law function is applied to govern the gradation of material properties through the nanoplate thickness.Considering coupling impacts between magneto,electro,thermo-mechanical loadings,the equa-tions of motion,and distribution of magneto-electrical field across the thickness direction of the METE-FG nanoplate are derived.The exact solutions for critical buckling temperatures of METE-FG nanoplates are introduced implementing Navier’s method.Moreover,the accuracy of the present formulation is examined by comparing the obtained results with published ones.Furthermore,the effects played by the magneto-electrical field,various temperature rises,nonlocality,power law index,side-to-thickness ratio,and aspect ratio on the critical buckling tempera-ture response are all investigated and reported. | Farzad Ebrahimi Mohammad Reza Barati | 2016 | International Journal of Smart and Nano Materials2016，7，3： | 1 |
| 13 | Regulation of human Cripto-1 expression by nuclear receptors and DNA promoter methylation in human embryonal and breast cancer cells 显示文摘 | Bianco C Castro NP Baraty C | 2013 | J Cell Physiol2013，228，6： | 1 |
| 14 | Parameter estimation of nonlinear Muskingum models using Nelder-Mead Simplex algorithm显示文摘 | BARATI R | 2011 | Journal of Hydrologic Engineering2011，16，11： | 1 |
| 15 | Super cubic iterative methods to solve systems of nonlinear equations显示文摘 | Darvish M T Barati A | 2007 | Applied Mathematics and Computation2007，188，2： | 1 |
| 16 | Comparison of WBC,ESR,CRP and PCT serum levels in septic and non-septic burn cases显示文摘 | Barati M Alinejad F Bahar MA | 2008 | Burns2008，34，6： | 1 |
| 17 | Comparison of WBC, ESR, CRP and PCT serum levels in septic and non-septic burn cases显示文摘 | Barati M Alinejad F Bahar MA | 2008 | Burns2008，34，6： | 1 |
| 18 | Gelation process in low-toxic gelcasting systems显示文摘 | Kookabi Mehrdad Babaluo Ali Akbar Barati Abolfazl | 2006 | Journalof the European Ceramic Society2006，26，15： | 1 |
| 19 | Dynamic simulation of pellet induration process in straight-grate system显示文摘 | Mansoor Barati | 2008 | International Journal of Minerral Processing2008，89，： | 1 |
| 20 | A proteomic screen identified stress-induced chaperone proteins as targets of Akt phosphorylation in mesangial cells显示文摘 | Barati M T Rane M J Klein J B | 2006 | Journal of Proteome Research2006，5，7： | 1 |
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