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Patterns of extremity traumas leading to amputation in Iran： results of Iranian National Trauma Project

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Chinese Journal of Traumatology 2009年第2期12卷 77-80页

作者： Majid Moini Mohammad R rasouli ali Khaji Farshad Farshidfar Pedram Heidari Sina Trauma and Surgery Research Center Sina Hospital Tehran University of Medical Sciences TehranIran

Objective： To determine the patterns of traumatic extremity injuries leading to amputation in Iran. Methods： Data of Iranian National Trauma Project was used to identify patients with upper and lower extremity traumas undergoing amputation. This project was conducted in 8 major cities during 2000-2004. Results： Of 17 753 traumatic patients, 164 （0.92%） had injuries to the extremities that resulted in the limb amputation. Of these, 143 （87.2%） were men. The patient＇s mean age was 29.0 years ± 15.4 years and the highest incidence was seen in the age group of 21 to 30 years （34.1%）. One hundred and four cases were occupational accidents （63.4%）. Blunt trauma was in 54.9% of the cases. The most common reasons for amputation were respectively stabbings （37.8%） and crush injuries （31.7%）. Amputation of hand fingers was the most frequent type of amputation （125 cases, 76,2 %）. One patient died from severe associated iniuries. Conclusions： This study shows the patterns of traumatic limb amputation in Iran, a developing country. Results of this study may be used in preventive strategic planning.

关键词： Amputation, traumatic Extremities Accidents, occupational

Enhancing water splitting via weakening H_(2) and O_(2) adsorption on NiCo-LDH@CdS due to interstitial nitrogen doping: A close look at the mechanism of electron transfer

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Journal of Energy Chemistry 2021年第6期30卷 118-130,I0004页

作者： Azam Pirkarami Sousan rasouli Ebrahim Ghasemi Department of Nanomaterials&Nanocoatings Institute for Color Science and Technology(ICST)TehranIran Inorganic Pigment and Glazes Department Institute for Color Science and TechnologyTehranIran Center of Excellence for Color Science and Technologies Institute for Color Science and TechnologyTehranIran

This paper is a report on the development of a convenient approach to fabricating a very efficient hybrid photoelectrocatalyst for water *** photoelectrocatalyst consists of nickel-cobalt layered double hydroxide as the core,cadmium sulfide as the shell,and nitrogen,hence NiCo-LDH@*** the electrocatalytic activity to be improved,the H_(2) and O_(2) binding energy needs to be *** interstitial nitrogen doping on NiCo-LDH@CdS can increase electrocatalytic activity to a great ***@CdS nanoparticles are obtained by subjecting to nitriding the NiCo-LDH@CdS electrode coated with polyvinylpyrrolidone *** electrode has a large specific surface area,allows fast transfer of electrons,and exhibits long-term *** experimental results presented in this paper reveal that interstitial nitrogen doping largely reduces H_(2) and O_(2) binding energy and lowers the activation barrier for the formation and splitting of water.

关键词： Water splitting Interstitial nitrogen doping Nitriding Two-redox/semiconductor liquid junction Hydrogen evolution reaction Oxygen evolution reaction

Inverting a k-heptadiagonal matrix based on Doolitle LU factorization

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Applied Mathematics(A Journal of Chinese Universities) 2022年第3期37卷 340-349页

作者： Maryam Shams Solary Mehran rasouli Department of mathematics Payamenoor universityTehranIran

The purpose of the present paper is to show a new numeric and symbolic algorithm for inverting a general nonsingular k-heptadiagonal *** work is based on Doolitle LU factorization of the *** obtain a series of recursive relationships then we use them for constructing a novel algorithm for inverting a k-heptadiagonal *** computational cost of the algorithm is *** illustrative examples are given to demonstrate the effectiveness of the proposed method.

关键词： k-Heptadiagonal matrices LU factorization algorithm inverse of a matrix

Stress analysis of clamped-free grid composite cylindrical shell under various end loadings

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Journal of Central South University 2014年第7期21卷 2667-2672页

作者： ARASHMEHR JAFAR RAHIMI GHOLAMHOSSEIN rasouli FAZEL Mechanical Engineering Department Tarbiat Modares University

Stress analysis of cylindrical grid-stiffened composite shells was conducted under transverse loading,pure bending,torsion and axial compression under clamped-free boundary *** strain gauges were employed to measure the strains in transverse loading case to validate the finite element analysis which was conducted using ANSYS *** agreement was obtained between the two *** was observed that stiffening the composite shell with helical ribs decreased the average equivalent Von Mises stress on the *** reduction of the stress seemed to be higher in the intersection of two *** was also seen that the stress reduction ratio was higher when the structure was under bending compared to torsion and axial *** reduction ratio was approximately 75% in pure bending in the intersection point of the ribs,while it was approximately 25% in ***,it is concluded that the presence of the ribs is more effective under *** analysis was done using Tsai-Wu *** ribs were observed to result in maximum and minimum increase in the failure load of the structure under transverse bending and torsional loading,respectively.

关键词： stiffened composite shell end loading stress analysis failure load

An ecological model with the p-Laplacian and diffusion

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International Journal of Biomathematics 2016年第1期9卷 157-163页

作者： S. H. rasouli Department of Mathematics Faculty of Basic Sciences Babol University of Technology Babol Iran

We study the existence of positive solutions of a population model with diffusion of the form {-△pu=aup-1-f（u）-c/ua,x∈Ω,u=0,x∈Ω where △p denotes the p-Laplacian operator defined by △pz =div（｜z｜P-2z）, p 〉 1, Ω is a bounded domain of RN with smooth boundary, α∈ C （0, 1）, a and e are positive constants. Here f ： [0, ∞） → R is a continuous function. This model arises in the studies of population biology of one species with u representing the concentration of the species. We discuss the existence of positive solution when f satisfies certain additional conditions. We use the method of sub- and super-solutions to establish our results.

关键词： Ecological model infinite semipositone sub- and super-solutions.

Color changes and drying kinetics modeling of basil seed mucilage during infrared drying process

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Information Processing in Agriculture 2022年第3期9卷 397-405页

作者： Ghazale Amini Fakhreddin Salehi Majid rasouli Faculty of Agriculture Bu-Ali Sina UniversityHamedanIran

The physicochemical properties and color of dried seed mucilage (gums) depend on thecondition and method of drying. So, in this study, the effects of infrared (IR) dryer systemparameters such as IR power (150, 250, and 375 W), distance of mucilage from lamp surface(4, 8, and 12 cm), mucilage thickness (0.5, 1.0, and 1.5 cm) on drying kinetics and colorindexes (L*a*b*) of basil seed mucilage (BSM) were examined in an IR dryer system. IR dry-ing kinetic of BSM was modeled using mathematical approach. Thus, experimental mois-ture ratio data were fitted to 8 various empirical models. It was found that Page model hasthe best fit to show the kinetic behavior and acceptably described the IR drying behavior ofBSM with the highest correlation coefficient values and the lowest standard error *** average effective moisture diffusivity (Deff) increased from 1.69×10^(-9)to 9.21×10^(-9)m^(2)/s with increasing lamp power from 150 W to 375 W, while it was decreased from7.93×10^(-9)to 2.65×10^(-9)m^(2)/s and 7.81×10^(-9)to 1.82×10^(-9)m^(2)/s with increasing the dis-tance of mucilage from 4 to 12 cm and the reduction of mucilage thickness from 1.5 to0.5 cm, respectively. The increasing in IR radiation power has a positive influence on thelightness (increasing L* index) of dried BSM and it reduced color changes index (DE) from13.04 to 11.51. The results showed that IR drying method has great industrial potential insaving processing time as well as energy with better maintenance of color and quality ofdried BSM.

关键词： Basil seed gum Drying kinetics Moisture ratio Page model

Novel empirical correlations for estimation of bubble point pressure,saturated viscosity and gas solubility of crude oils

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Petroleum Science 2009年第1期6卷 86-90页

作者： Ehsan Khamehchi Fariborz Rashidi Hanieh rasouli Amir Ebrahimian Faculty of Chemical Engineering Amirkabir University of Technology Faculty of Petroleum Engineering Amirkabir University of Technology

Knowledge of petroleum fluid properties is crucial for the study of reservoirs and their development. Estimation of reserves in an oil reservoir or determination of its performance and economics requires a good knowledge of the fluid physical properties. Bubble point pressure, gas solubility and viscosity of oils are the most important parameters in use for petroleum and chemical engineers. In this study a simple-to-use, straight-forward mathematical model was correlated on a set of 94 crude oil data. Three correlations were achieved based on an exponential regression, which were different from conventional empirical correlations, and were evaluated against 12 laboratory data other than those used for the regression. It is concluded that the new exponential equation is of higher precision and accuracy than the conventional correlations and is a more convenient mathematical formulation.

关键词： Bubble point pressure saturated viscosity gas solubility empirical equation exponential multiple regression

Comparison of lattice and pseudo 3D numerical simulation of tip screen out operation

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Petroleum 2023年第3期9卷 454-467页

作者： Ahmed Merzoug Vibhas Pandey Vamegh rasouli Branko Damjanac Hui Pu Department of Petroleum Engineering University of North DakotaGrand ForksNDUSA ConocoPhillips HoustonTXUSA Itasca Consulting Group MinneapolisUSA

Hydraulic fracturing(HF)is a commonly used technique to stimulate low permeability formations such as shale plays and tight ***,this method of well stimulation has also been used in high permeable unconsolidated sandstone formations to bypass near-wellbore formation damage and prevent sand production at some distance apart from the wellbore *** treatment is called frac-pack completion,where a short length but wide width fracture is formed by injecting aggressive concentrations of proppant into the fracture *** operation is known as tip screen-out(TSO).Detailed design of fluid and proppant,including an optimal pump schedule,is required to achieve satisfactory *** this study,we first assess the lattice-based numerical method's capabilities for simulating hydraulic fracturing propagation in elastoplastic *** results will be compared with the same case simulation results using a pseudo 3D(P3D)model and analytical ***,we explore the Nolte(1986)design for frac-pack and TSO treatment using lattice-based software and the P3D *** results showed that both models could simulate the hydraulic fracturing propagation in soft formation and TSO operation,while some differences were observed in generated geometry,the tip screenout time and net pressure *** results are *** was noted that fracture propagation regime(viscosity/toughness),nonlocality and nonlinearity had an influence on the different *** advantages of each model will be discussed.

关键词： Frac-pack Tip screen-out Lattice Pseudo 3D Proppant Pump schedule

Significant aspects of carbon capture and storage–A review

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Petroleum 2019年第4期5卷 335-340页

作者： Arshad Raza Raoof Gholami Reza Rezaee Vamegh rasouli Minou Rabiei Department of Petroleum Engineering University of Engineering and Technology(UET)Pakistan Department of Petroleum Engineering Curtin UniversityMalaysia Department of Petroleum Engineering Curtin UniversityAustralia Department of Petroleum Engineering University of North DakotaUSA

Excessive emission of greenhouse gases into the atmosphere has resulted in a progressive climate change and global warming in the past *** have been many approaches developed to reduce the emission of Carbon Dioxide(CO2)into the atmosphere,among which Carbon Capture and Storage(CCS)techniques has been recognized as the most promising *** paper provides a deeper insight about the CCS technology where CO2 is captured and stored in deep geological formations for stabilization of the earth's *** of capturing and storage for a long-term sequestration are also discussed together with the processes,mechanisms and interactions induced by supercritical CO2 upon injection into subsurface geological sites.

关键词： CCS technologies CO_(2)capture CO_(2)transportation CO_(2)storage Leakage Costs