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Correlation of rib fracture patterns with abdominal solid organ injury: A retrospective observational cohort study

Chinese Journal of Traumatology 2022年第1期25卷 45-48页

作者： Abdoulhossein Davoodabadi Noshin Mosavibioki Mohammad Mashayekhil Hamidreza Gilasi Esmail Abdorrahim Kashi babak Haghpanah Department of Surgery Trauma Research CenterKashan University of Medical SciencesKashanIran General Surgery Department Trauma Research CenterKashan University of Medical SciencesKashanIran Department of Epidemiology&Biostatistics Kashan University of Medical SciencesKashanIran Department of Orthopedic Surgery Kashan University of Medical SciencesKashanIran

Purpose::Rib fractures are one of the most common causes of morbidity and mortality and are associated with abdominal solid organ injury(ASOI).The purpose of this study was to investigate the correlation of ASOI with the number,location,and involved segments of rib fracture(s)in blunt chest ***::This retrospective cohort study was conducted on patients with blunt chest trauma over the age of 15 years,who were hospitalized with the diagnosis of rib fractures from July 2015 to September *** ethic committee approval,a retrospective chart review was designed and patients with a diagnosis of rib fractures were *** who had chest and abdominopelvic CT scan were included in the study and additional data including age,gender,injury severity score,trauma mechanism,number and sides of the fractured ribs(left/right/bilateral),rib fracture segments(upper,middle,lower zone)and results of chest and abdominal spiral CT scan were *** correlation between ASOI and the sides,segments and number of rib fracture(s)was assessed by Pearson's correlation ***::Altogether 1056 patients with rib fracture(s)were *** mean age was(42.76±13.35)years and 85.4%were *** most common mechanism of trauma was car accident(34.6%).Most fractures occurred in the middle rib zone(60.44%)and the most commonly involved ribs were the 6th and 7th ones(15.7%and 16.4%,respectively).Concurrent abdominal injuries were observed in 103 patients(34.91%)and were significantly associated with middle zone rib ***::There is a significant relationship between middle zone rib fractures and ***-abdominal injuries are not restricted to fractures of the lower ribs and thus should always be kept in mind during management of blunt trauma patients with rib fractures.

关键词： Blunt trauma Liver injury Rib fractures Solid organ injury Spleen injury

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Applicable models for multi-component adsorption of dyes:A review

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Journal of Environmental Sciences 2013年第3期25卷 419-429页

作者： babak Noroozi George A.Sorial Department of Textile Engineering University of Guilan Visiting Scholar Environmental Engineering ProgramUniversity of Cincinnati Environmental Engineering Program University of Cincinnati

Adsorption is one of the several techniques that has been successfully used for dyes *** most industrial colored effluents contain several components including dyes,having a strong knowledge about the scope of competitive adsorption process is a powerful key to design an appropriate *** is mainly because of the complexity brought about by the increasing number of parameters needed for process description which complicates not only the process modeling but also the experimental data collection.A multicomponent adsorption model should be based on fundamental soundness,speed,and simplicity of *** such systems,competition will change the adsorbent-adsorbate ***,there is major concern to develop an accurate and reliable method to predict dye adsorption behavior in multi-component *** article covers topics such as the theory of dyes adsorption in multi-component systems along with applicable models according to the consistent theories presented by researchers.

关键词： adsorption dye multi-component isotherm models

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Fast track system optimization of emergency departments:Insights from a computer simulation study

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第3期7卷 107-135页

作者： babak Shirazi Department of Industrial Engineering Mazandaran University of Science and Technology Babol Iran

Healthcare systems engineering in emergency departments(EDs)are developing rapidly in the world *** track(FT)as a rapid treatment system is considered to facilitate ED patient *** know how FT can improve the performance of ED,one should study the best configuration of resources for implementation of *** research presents a pattern for implementation of FT systems in hospital EDs using healthcare simulation ***-based optimization model uses modeling and simulation capabilities to generate configurations of FT resources and its patient prioritization pattern with Arena rsimulation software.A decision making method is used to select the optimal configuration based on pre-specified performance *** results imply that the proposed FT implementation pattern is efficient and capable of improving patient flow.

关键词： Healthcare engineering fast track system emergency department simulationbased optimization.

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Phenotypic and functional comparison of two dist subsets of programmable cell of monocytic origin （PCMOs）-derived dendritic cells with conventiona monocyte-derived dendritic cells nct

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Cellular & Molecular Immunology 2016年第2期13卷 160-169页

作者： babak Beikzadeh Nowruz Delirezh Department of Microbiology Faculty of Veterinary Medicine Urmia University Urmia Iran Department of Cellular and Molecular Biotechnology Institute of Biotechnology Urmia University Urmia Iran

Dendritic cells （DCs） are professional antigen-presenting cells with the ability to induce primary T-cell responses. They are commonly produced by culturing monocytes in the presence of IL-4 and GM-CSF （cells produced in this manner are called conventional DCs）. Here we report the generation of two functionally distinct subsets of DCs derived from programmable cells of monocytic origin （PCMOs） in the presence of IL-3 or tumor necrosis factor alpha （TNF-e）. Monocytes were treated with macrophage colony-stimulating factor （M-CSF） and IL-3 for 6 days and then incubated with IL-4 and IL-3 （for IL-3 DCs） or with IL-4, GM-CSF and TNF-a （for TNF-a DCs） for 7 days. Monocytes were then loaded with tumor lysate （used as antigen）, and poly （I ： C） was added. The maturation factors TNF-e and monocyte conditioned medium （MCM） were added on days 4 and 5, respectively. The phenotypes of the DCs generated were characterized by flow cytometry, and the cells＇ phagocytic activities were measured using FITC-conjugated latex bead uptake. T-cell proliferation and cytokine release were assayed using MTT and commercially available ELISA kits, respectively. We found that either IL-3DCs or TNF-α DCs induce T-cell proliferation and cytokine secretion; the cytokine release pattern showed reduced IL-12/IL- 10 and IFN-γ/IL-4 ratios in both types of DCs and in DC-primed T-cell supernatant, respectively, which confirmed that the primed T cells were polarized toward aTh2-type immune response. We concluded that PCMOs are a new cell source that can develop into two functionally distinct DCs that both induce a Th2-type response in vitro. This modality can be used as a DC-based immunotherapy for autoimmune diseases.

关键词： dedifferentiation dendritic cell monocytes PCMO

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Anaerobic-aerobic processes for the treatment of textile dyeing wastewater containing three commercial reactive azo dyes:Effect of number of stages and bioreactor type

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Chinese Journal of Chemical Engineering 2021年第11期34卷 228-239页

作者： Banafsheh Azimi Elham Abdollahzadeh-Sharghi babak Bonakdarpour Chemical Engineering Department Amirkabir University of TechnologyTehranIran Environmental Group Energy DepartmentMaterials and Energy Research CenterAlborzIran

In this study,the effect of number of stages and bioreactor type on the removal performance of a sequential anaerobic-aerobic process employing activated sludge for the treatment of a simulated textile dyeing wastewater containing three commercial reactive azo dyes was *** stage processes performed better than one stage ones,both in terms of overall organic and color removal,as well as the higher contribution of anaerobic stage to the overall removal performance,thereby making them a more energy efficient *** employment of a moving bed sequencing batch biofilm reactor,which uses both suspended and attached biomass,for the implementation of the anaerobic stage of the process,was compared with a sequencing batch reactor that only employs suspended *** results showed that,although there was no meaningful difference in biomass concentration between the two bioreactors,the latter reactor had better performance in terms of chemical oxygen demand(COD)removal efficiency and rate and color removal *** exploratory tests revealed a difference between the roles of suspended and attached bacterial populations,with the former yielding better color removal whilst the latter had better COD removal *** sequential anaerobic–aerobic process,employing an aerobic membrane bioreactor in the aerobic stage resulted in COD and color removal of 77.1±7.9%and 79.9±1.5%,*** incomplete COD and color removal was attributed to the presence of soluble microbial products in the effluent and the autoxidation of dye reduction metabolites,***,aerobic partial mineralization of the dye reduction metabolites,was experimentally observed.

关键词： Wastewater Anaerobic Aerobic Anaerobic moving bed sequencing batch biofilm reactor Anaerobic sequencing batch reactor Aerobic membrane bioreactor

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The effect of dynamical quark mass on the calculation of a strange quark star's structure

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Research in Astronomy and Astrophysics 2012年第5期12卷 540-550页

作者： Gholam Hossein Bordbar babak Ziaei Department of Physics Shiraz UniversityShiraz 71454Iran Research Institute for Astronomy and Astrophysics of Maragha P.O.Box 55134-441Maragha 55177-36698Iran

We discuss the dynamical behavior of strange quark matter components, in particular the effects of density dependent quark mass on the equation of state of strange quark matter. The dynamical masses of quarks are computed within the Nambu-Jona-Lasinio model, then we perform strange quark matter calculations em- ploying the MIT bag model with these dynamical masses. For the sake of compar- ing dynamical mass interaction with QCD quark-quark interaction, we consider the one-gluon-exchange term as the effective interaction between quarks for the MIT bag model. Our dynamical approach illustrates an improvement in the obtained equation of state values. We also investigate the structure of the strange quark star using Tolman- Oppenheimer-Volkoff equations for all applied models. Our results show that dynamical mass interaction leads to lower values for gravitational mass.

关键词： Stars dense matter - equation of state - ISM structure -- supemova remnants

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Development of a radiographic method for measuring the discrete spectrum of the electron beam from a plasma focus device

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Plasma Science and Technology 2017年第7期19卷 26-33页

作者： Neda SHAMSIAN babak SHIRANI BIDABADI Hosein PIRJAMADI Department of Nuclear Engineering Faculty of Advanced Sciences and Technologies University of Isfahan

An indirect method is proposed for measuring the relative energy spectrum of the pulsed electron beam of a plasma focus device. The Bremsstrahlung x-ray, generated by the collision of electrons against the anode surface, was measured behind lead filters with various thicknesses using a radiographic film system. A matrix equation was considered in order to explain the relation between the x-ray dose and the spectral amplitudes of the electron beam. The electron spectrum of the device was measured at 0.6 mbar argon and 22 kV charging voltage, in four discrete energy intervals extending up to 500 keV. The results of the experiments show that most of the electrons are emitted in the 125-375 keV energy range and the spectral amplitude becomes negligible beyond 375 keV.

关键词： magnetized plasma plasma focus plasma diagnostics electron beam energyspectrum x-ray dosimetry

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Effect of graphene functionalizing on the performance of NiMo/graphene in HDS and HDN reactions

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Petroleum Science 2019年第5期16卷 1185-1195页

作者： babak Behnejad Majid Abdouss Ahmad Tavasoli Department of Chemistry Amirkabir University of TechnologyTehranIran School of Chemistry College of ScienceUniversity of TehranTehranIran

In this research,to remove sulfur and nitrogen compounds from heavy naphtha,various nanocatalysts were prepared through supporting NiMo over nanoporous graphene and evaluated in hydrodesulfurization and hydrodenitrogenation *** nanoporous graphene was initially functionalized in order to facilitate the metal being loaded on *** different methods were used to functionalize the nanoporous *** NiMo/nanoporous graphene nanocatalysts were characterized by field emission scanning electron microscopy,Fourier transform infrared spectroscopy,X-ray diffraction,inductively coupled plasma optical emission spectrometry,temperature-programmed reduction,nitrogen adsorption-desorption isotherms and transmission electron microscopy *** performance was evaluated in terms of conversions of sulfur,mercaptans(R-SH)and nitrogen *** was found that the functionalized nanoporous graphene support could significantly enhance the catalytic performance in comparison with the industrial NiMo/alumina *** the functionalized graphene supports,amine-functionalized graphene exhibited the best *** using NiMo supported over amine-functionalized graphene,the conversions of total sulfur and R-SH reached 97.8%and 98.1%,respectively.

关键词： Hydrodesulfurization(HDS) Hydrotreating(HDT) Nanocatalyst Catalyst support Graphene functionalization NiMo/nanoporous graphene

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An analytical solution for spherical fluid flow modeling in porous media with non-uniform initial pressure considering the supercharging effect

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Petroleum 2021年第3期7卷 303-313页

作者： Ali Nabizadeh Mohammad Sharifi babak Aminshahidi Institute of GeoEnergy Engineering School of EnergyGeoscienceInfrastructure and SocietyHeriot-Watt UniversityEdinburghUK Department of Petroleum Engineering Amirkabir University of Technology(Tehran Polytechnic)P.O.Box:15875-4413TehranIran

The diffusivity equation is a partial differential equation(PDE)which can be used for fluid flow modeling in porous *** reservoir parameters from pressure data(i.e.,pressure transient analysis)is one of the most important steps in the process of field *** initial evaluation can be used to make decisions about future *** Formation Testing(WFT)is one of the most popular techniques for parameter estimation and has received significant attention in recent *** main problem plaguing WFT is a phenomenon known as the“supercharging effect,”which essentially refers to mud invasion,and this,in turn,alters pressure distribution across the *** this study,an analytical solution for fluid flow modeling in spherical coordinates with non-uniform initial pressure is *** new procedure takes into account the effect of mud invasion,or,in other words,the supercharging *** accuracy of this derivation was validated using previous semianalytical solutions(the Laplace method)in addition to field *** type curves and dimensionless parameters,which can be used for pressure transient analysis,are also *** procedure is applied to the WFT data that was obtained from an oil field in the south of Iran,and an excellent agreement(less than 10%error)was *** addition,there is considerable uncertainty regarding the radius of investigation for spherical *** is important as this parameter greatly affects the applicability of *** analytical derivation of this study was used to determine a reasonable value for this parameter as well.

关键词： Porous media Analytical solution Supercharging effect Welltesting Spherical Darcy's flow

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Comparison of performance of Ni-Mo/γ-alumina catalyst in HDS and HDN reactions of main distillate fractions

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Petroleum Science 2019年第3期16卷 645-656页

作者： babak Behnejad Majid Abdouss Ahmad Tavasoli Department of Chemistry Amirkabir University of Technology Tehran Iran School of Chemistry College of Science University of Tehran Tehran Iran

A bimetallic nickel-molybdenum catalyst supported on γ-alumina was synthesized by the two-step incipient wetness impregnation *** activity of the prepared Ni-Mo/γ-alumina catalyst was evaluated in a down flow fixed-bed *** this way,hydrodesulfurization(HDS)and hydrodenitrogenation(HDN)reactions of the main distillate fractions of crude oil were ***,SEM,TPR,ICP-OES,BET-BJH and nitrogen adsorption/desorption methods were used for characterizing the synthesized Ni-Mo/γ-alumina *** active metals with Ni/Mo mass ratio of 0.23 and total metal of 13.7 wt% were loaded on the support,similar to the commercial industrial *** performance tests were conducted at 3.0 MPa(for light naphtha and heavy naphtha)and at 4.5 MPa(for kerosene and gas oil).The results revealed that the total sulfur conversion of the light naphtha,heavy naphtha,kerosene and gas oil fractions was 98.3%,95%,91.7% and 90.1%(after 24 h),respectively.

关键词： HDS HDN Ni-Mo/γ-alumina Gas oil Kerosene Naphtha

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