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Investigating the impact of the universal function of the nuclear proximity potential in heavy-ion fusion cross sections

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Communications in Theoretical Physics 2024年第5期76卷 86-93页

作者： R Gharaei E sarvari Department of Physics Sciences FacultyHakim Sabzevari UniversityPO Box 397SabzevarIran Department of Physics Faculty of ScienceFerdowsi University of MashhadPO Box 91775-1436MashhadIran Science Faculty Department of PhysicsTarbiat Modares UniversityTehranIran

The fusion barriers and cross sections of 15 colliding systems with 320≤Z_(1)Z_(2)≤1512 are investigated in detail to understand the influence of the universal function of proximity potential formalism in the heavy-ion fusion *** realize this goal,we select three versions of the phenomenological proximity potentials,including Prox.77,Zhang 2013,and Guo 2013,to calculate the nucleus-nucleus *** experimental fusion cross sections for the selected reactions are analyzed using the standard coupled-channel calculations,including couplings to the low-lying 2^(+)and 3^(-)states in the target and *** calculated results show that the universal functions of the Guo 2013 and Prox.77 models provide the lowest and highest fusion barriers,*** addition,it is found that the height of the fusion barriers is enhanced by increasing the mass number of the projectile from light to heavy *** highest sensitivity to the mass number of the projectile belongs to the results of Prox.77.A discussion is also presented on the influence of the universal function on the radial behavior of the interaction potential in the allowed region for overlapping *** results reveal that the best fit to the experimental data of the fusion cross sections for the reactions involving light and medium nuclei is obtained using the universal function of the Zhang 2013 *** the heavier systems,the results of the Guo 2013 model at sub-barrier energies provide a good description of the available data.

关键词： fusion reactions proximity-type potentials universal function coupled-channel calculations

Wettability modification effects on relative permeability end-points:Comparative analysis of surfactant agents for enhanced oil recovery

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Petroleum Research 2024年第2期9卷 206-218页

作者： Erfan hosseini Negar hosseini Mohammad Sarmadivaleh Exploration Directorate National Iranian Oil Company(NIOC)TehranIran Department of Petroleum Engineering Islamic Azad University(IAU)IlamIran WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia

This research examines the impact of wettability alteration on the end points of relative permeability,a crucial property of fluids and porous media that influences the displacement processes of immiscible fluids through such *** estimation of the mobility ratio for oil recovery relies on these end points,which are influenced by connate water saturation and residual oil *** investigate this relationship,carbonate rock is generally subjected to wettability alteration using surfactant agents,and core flooding is employed to determine the relative permeability before and after the *** wettability of the rock is commonly assessed through contact angle *** surfactants,TritonX-100(Tx-100)and Cedar,were tested in reducing the wettability of the porous media for *** contact angle measurements revealed that Tx-100 was more effective for this purpose than ***,the relative permeability tests indicated that both surfactants decreased residual oil saturation,but Tx-100 also improved system *** contrast,Cedar reduced residual oil saturation but increased system pressure,possibly because of its high *** results also demonstrate that injecting Tx-100 leads to a 14%increase in ultimate oil recovery compared with water injection,while Cedar injection increased the recovery factor by 5%.This difference may be attributed to the incomplete coverage of the pore wall by Cedar or its weaker chemical structure than ***,in carbonate cores,neither non-ionic surfactant enhanced oil recovery.

关键词： Wettability alteration Relative permeability Core flooding Tx-100 Cedar Contact angle

Effect of thermal maturation and organic matter content on oil shale fracturing

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International Journal of Coal Science & Technology 2024年第2期11卷 16-34页

作者： Fatemeh Saberi Mahboubeh hosseini‑Barzi Department of Geology and Geological Engineering University of North Dakota264 Centennial DriveGrand ForksNDUSA Department of Geology and Petroleum Basins Shahid Beheshti University of TehranTehranTehran ProvinceIran

The Pabdeh Formation represents organic matter enrichment in some oil fields,which can be considered a source *** study is based on the Rock–Eval,Iatroscan,and electron microscopy imaging results before and after heating the *** discovered this immature shale that undergoes burial and diagenesis,in which organic matter is converted into *** migration is the process that transports hydrocarbons in the source *** investigated this phenomenon by developing a model that simulates hydrocarbon generation and fluid pressure during kerogen-to-hydrocarbon *** initially formed at the tip/edge of kerogen and were filled with hydrocarbons,but as catagenesis progressed,the pressure caused by the volume increase of kerogen decreased due to hydrocarbon *** transformation of solid kerogen into low-density bitumen/oil increased the pressure,leading to the development of damage zones in the source *** Pabdeh Formation’s small porethroats hindered effective expulsion,causing an increase in pore fluid pressure inside the initial *** stress accumulated due to hydrocarbon production,reaching the rock’s fracture strength,further contributed to damage zone *** the expansion process,microfractures preferentially grew in low-strength pathways such as lithology changes,laminae boundaries,and pre-existing *** the porous pressure created by each kerogen overlapped,individual microfractures interconnected,forming a network of microfractures within the source *** research sheds light on the complex interplay between temperature,hydrocarbon generation,and the development of expulsion fractures in the Pabdeh Formation,providing valuable insights for understanding and optimizing hydrocarbon extraction in similar geological settings.

关键词： Oil shale Microfracture Hydrocarbon generation Organic matter Thermal maturation Primary migration

BSN:The First Light Curve Analysis of the Total Eclipse Binary System EL Tuc

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Research in Astronomy and Astrophysics 2024年第10期24卷 66-75页

作者： Elham sarvari Eduardo Fernández Lajús Atila Poro Independent researcher TehranIran Instituto de Astrofísica de La Plata(CCT La Plata-CONICET-UNLP) La PlataArgentina BSN Project &Astronomy Department of the Raderon AI Lab.BurnabyBCCanada

We conducted the first light curve study of the binary star EL Tuc within the Binary Systems of South and North project's *** photometric observations were made using standard multiband BVR_cI_c filters at an observatory in *** presented a new ephemeris for EL Tuc and a linear fit to the O–C diagram,utilizing our extracted times of minima and additional *** employed the PHysics Of Eclipsing BinariEs Python code and the Markov chain Monte Carlo approach for the system's light curve *** target system's light curve solution required a cold starspot on the hotter *** conclude that EL Tuc is a total contact binary system with a low mass ratio of q=0.172±0.002,an orbital inclination of i=83°.74±0°.40,and a fillout factor of f=53.7%±1.6%.We used the P-a relationship and the Gaia Data Release 3 parallax method to determine the absolute parameters of EL Tuc to compare the precision of our *** system was classified as W-type based on the mass and effective temperature of the companion *** positions of the systems were depicted on the M-L,M-R,T-M,and *** relationship between the spectroscopic and photometric mass ratios of binaries was discussed.

关键词： (stars:)binaries:eclipsing stars:individual(EL Tuc) line:identification

Developing a phenomenological model to simulate single and mixed scale formation during flow in porous media:Coupling a salt precipitation model with an ion transport equation under dynamic conditions

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Petroleum Research 2024年第1期9卷 17-36页

作者： Erfan hosseini Dana Mohammad Nazar Negar hosseini Mohammad Sarmadivaleh Exploration Directorate National Iranian Oil Company(NIOC)TehranIran Institute of Physical Chemistry and Polymer Physics Leibniz Institute of Polymer Research DresdenDresdenGermany Department of Petroleum Engineering Islamic Azad University(IAU)IlamIran WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia

Water flooding and pressure maintenance are recommended to improve oil recovery practices after low recovery of petroleum reservoirs occurs during primary *** crystal formation is a frequent occurrence when using these *** experimental,numerical,and theoretical studies have been done on the mechanisms underlying scaling and permeability reduction in porous media;however,there has not been a satisfactory model *** study developed a phenomenological model to predict formation damage caused by salt *** with existing models,which provide a scaling tendency,the proposed model predicts the profile of scale *** salt precipitation model simulates reactive fluid flow through porous media.A thermodynamic,kinetic,and flow hydrodynamic model was developed and coupled with the ion transport equation to describe the movement of ***,a set of carefully designed dynamic experiments were conducted and the data were compared with the model *** forecasts and experimental data were observed to have an average absolute error(AAE)ranging from 0.68%to 5.94%,which indicates the model's suitability.

关键词： Improved oil recovery Water flooding Formation damage Scaling tendency Salt precipitation

Enteric neuropathy in diabetes:Implications for gastrointestinal function

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World Journal of Gastroenterology 2024年第22期30卷 2852-2865页

作者： mona Mohamed Ibrahim Abdalla Department of Human Biology School of MedicineInternational Medical UniversityBukit Jalil 57000Kuala LumpurMalaysia

Diabetes,commonly known for its metabolic effects,also critically affects the enteric nervous system(ENS),which is essential in regulating gastrointestinal(GI)motility,secretion,and *** development of diabetes-induced enteric neuropathy can lead to various GI dysfunctions,such as gastroparesis and irregular bowel habits,primarily due to disruptions in the function of neuronal and glial cells within the ENS,as well as oxidative stress and *** editorial explores the pathophysiological mechanisms underlying the development of enteric neuropathy in diabetic ***,it discusses the latest advances in diagnostic approaches,emphasizing the need for early detection and intervention to mitigate GI complications in diabetic *** editorial also reviews current and emerging therapeutic strategies,focusing on pharmacological treatments,dietary management,and potential neuromodulatory ***,this editorial highlights the necessity of a multidisciplinary approach in managing enteric neuropathy in diabetes,aiming to enhance patient quality of life and address a frequently overlooked complication of this widespread disease.

关键词： Diabetic neuropathy Gastrointestinal Insulin resistance Diabetes Enteric nervous system Enteric neuropathy

基于变分法的四轮转向机动车辆路径规划及最优控制研究

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Acta Mechanica Sinica 2024年第2期40卷 147-161页

作者： Hami Tourajizadeh Mohsen sarvari Samira Afshari Mechanical Engineering Department Faculty of EngineeringKharazmi UniversityTehranIran University of Iowa Iowa CityIowaUSA

使用变分法对四轮转向机动车辆(4WSV)进行最优控制研究,并根据预定目标函数提取出相对最优路径.当前,4WS车辆因为其出色的操控性能增长迅速.由于4WS车辆系统是过约束的,因此车辆在两个确定边界之间可能轨迹并不唯一.由此,通过最小化预... 详细信息

使用变分法对四轮转向机动车辆(4WSV)进行最优控制研究,并根据预定目标函数提取出相对最优路径.当前,4WS车辆因为其出色的操控性能增长迅速.由于4WS车辆系统是过约束的,因此车辆在两个确定边界之间可能轨迹并不唯一.由此,通过最小化预定成本函数提取最优路径成为一项有益的研究.为了达到此目的,本文首先确定系统模型,随后应用变分法来进行车辆的最优控制.控制输入的最优值不仅满足边界条件,同时实现特定成本函数的最小化.成本函数被设定为最小化误差和能量消耗,并对相应最优路径也进行了计算.为了验证模型的正确性,本文将MATLAB的仿真结果与CarSim进行了比较.通过在MATLAB中进行解析和比较性模拟场景的分析,研究最优控制方法的效率.通过比较相应的成本函数,证明了本文提出的控制方法相较非最优策略的优越性.最后证明本文提出的最优控制方法可以获得两个预定边界之间的最优路径,并通过该使用变分法对四轮转向机动车辆(4WSV)进行最优控制研究,并根据预定目标函数提取出相对最优路径.当前,4WS车辆因为其出色的操控性能增长迅速.由于4WS车辆系统是过约束的,因此车辆在两个确定边界之间可能轨迹并不唯一.由此,通过最小化预定成本函数提取最优路径成为一项有益的研究.为了达到此目的,本文首先确定系统模型,随后应用变分法来进行车辆的最优控制.控制输入的最优值不仅满足边界条件,同时实现特定成本函数的最小化.成本函数被设定为最小化误差和能量消耗,并对相应最优路径也进行了计算.为了验证模型的正确性,本文将MATLAB的仿真结果与CarSim进行了比较.通过在MATLAB中进行解析和比较性模拟场景的分析,研究最优控制方法的效率.通过比较相应的成本函数,证明了本文提出的控制方法相较非最优策略的优越性.最后证明本文提出的最优控制方法可以获得两个预定边界之间的最优路径,并通过该路径可以实现最大准确性和最小能量消耗.

关键词：成本函数最优控制机动车辆变分法能量消耗四轮转向车辆路径规划最优路径

Nano-tube TiO_2 as a new catalyst for eco-friendly synthesis of imines in sunlight

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Chinese Chemical Letters 2011年第5期22卷 547-550页

作者： mona hosseini-sarvari Department of Chemistry Shiraz UniversityShiraz 71454Iran

Nanomaterials are considered as suitable heterogeneous catalysts for many organic *** nano-tube TiO_2 has been reported as a heterogeneous catalyst,for synthesis of imines in sunlight at room temperature under solvent-free *** condensation of less electrophilic carbonyl compounds with poorly nucleophilic amines was afforded imines in excellent yields.

关键词： Nano-tubes TiO_2 Imines Solvent-free Sunlight

Insulin resistance as the molecular link between diabetes and Alzheimer's disease

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World Journal of Diabetes 2024年第7期15卷 1430-1447页

作者： mona Mohamed Ibrahim Abdalla Department of Human Biology School of MedicineInternational Medical UniversityBukit Jalil 57000Kuala LumpurMalaysia

Diabetes mellitus(DM)and Alzheimer's disease(AD)are two major health concerns that have seen a rising prevalence *** studies have indicated a possible link between DM and an increased risk of developing ***,while primarily known for its role in regulating blood sugar,also plays a vital role in protecting brain *** resistance(IR),especially prevalent in type 2 diabetes,is believed to play a significant role in AD's *** insulin signalling becomes dysfunctional,it can negatively affect various brain functions,making individuals more susceptible to AD's defining features,such as the buildup of beta-amyloid plaques and tau protein *** research suggests that addressing insulin-related issues might help reduce or even reverse the brain changes linked to *** review aims to explore the relationship between DM and AD,with a focus on the role of *** also explores the molecular mechanisms by which IR might lead to brain changes and assesses current treatments that target *** IR's role in the connection between DM and AD offers new possibilities for treatments and highlights the importance of continued research in this interdisciplinary field.

关键词： Alzheimer's disease Insulin resistance Obesity Dementia Diabetes Metabolic syndrome