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Logarithmic Gradient Transformation and Chaos Expansion of Ito Processes

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Communications in Mathematics and Statistics 2022年第2期10卷 215-231页

作者： Hossein gorji Computational Mathematics and Simulation Science Ecole polytechnique federal de Lausanne1015 LausanneSwitzerland

Since the seminal work of Wiener(Am J Math 60:897-936,1938),chaos expansion has evolved to a powerful methodology for studying a broad range of stochastic differential *** its complexity for systems subject to the white noise remains *** issue appears due to the fact that the random increments generated by the Brownian motion result in a growing set of random variables with respect to which the process could be *** order to cope with this high dimensionality,we present a novel transformation of stochastic processes driven by the white *** particular,we show that under suitable assumptions,the diffusion arising from white noise can be cast into a logarithmic gradient induced by the measure of the *** this transformation,the resulting equation describes a stochastic process whose randomness depends only on the initial ***,the stochasticity of the transformed system lives in the initial condition and it can be treated conveniently with chaos expansion tools.

关键词： Ito process Chaos expansion Fokker-Planck equation

Photoinactivation of bacteriophage MS2,Tulane virus and Vibrio parahaemolyticus in oysters by microencapsulated rose bengal

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Food Quality and Safety 2022年第3期6卷 396-403页

作者： Mohamad Eshaghi gorji Dan Li Department of Food Science&Technology Faculty of ScienceNational University of SingaporeSingapore

Bivalve molluscan shellfish such as oysters are important vectors for the transmission of foodborne pathogens including both viruses and *** provides a cold-sterilization option against the contamination as excited photosensitizers could transfer electronic energy to oxygen molecules producing reactive oxygen species such as singlet oxygen,leading to oxidative damage and death of the ***,the efficacy of photoinactivation is very often compromised by the presence of food matrix due to the nonselective reactions of short-lived singlet oxygen with organic matter other than the target *** order to address this issue,we encapsulated a food-grade photosensitizer rose bengal(RB)in alginate *** extra coating of chitosan effectively prevented the release of RB from the microbeads in seawater,and more importantly,enhanced the selectivity of the photoinactivation via the electrostatic interactions between cationic chitosan and anionic charge of the virus particles(bacteriophage MS2 and Tulane virus)and the Gram-negative bacteria Vibrio parahaemolyticus(V parahaemolyticus).The treatment of oysters with microencapsulated RB resulted in significantly higher reductions of MS2 phage,Tulane virus and V parahaemolyticus than free RB and non-RB carrying microbeads(P<0.05)tested with both in vitro and in vivo experimental *** study demonstrated a new strategy in delivering comprehensively formulated biochemical sanitizers in bivalve shellfish through their natural filter-feeding activity and thereby enhancing the mitigation efficiency of foodborne pathogen contamination.

关键词： Bacteriophage MS2 Tulane virus Vibrio parahaemolyticus photosensitizer encapsulation oyster

Hamartomatous polyps:Diagnosis,surveillance,and management

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World Journal of Gastroenterology 2023年第8期29卷 1304-1314页

作者： Leva gorji Peter Albrecht Department of Surgery Kettering Health DaytonDaytonOH 45405United States

Hereditary polyposis syndrome can be divided into three categories:Adenomatous,serrated,and hamartomatous *** polyps,malformations of normal tissue presenting in a disorganized manner,are characterized by an autosomal dominant inheritance *** syndromes exhibit hamartomatous gastrointestinal polyps in conjunction to extra-intestinal manifestations,which require conscientious and diligent ***-Jeghers syndrome,Cowden syndrome,and juvenile polyposis syndrome are the most common displays of hamartomatous polyposis syndrome(HPS).Diagnosis can be pursued with molecular testing and endoscopic *** identification of these autosomal dominant pathologies allows to optimize malignancy surveillance,which helps reduce morbidity and mortality in both the affected patient population as well as at-risk family *** surveillance is an important pillar of prognosis and monitoring,with many patients eventually requiring surgical *** this review,we discuss the diagnosis,surveillance,and management of HPS.

关键词： Hamartomatous polyps Peutz-Jegher syndrome Cowden syndrome Juvenile polyposis syndrome

Design and implementation of a new portable hybrid solar atmospheric water-generation system

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Clean Energy 2022年第6期6卷 879-892页

作者： Nafise Shafeian A.A.Ranjbar Tahereh B.gorji Faculty of Mechanical Engineering Noshirvani University of TechnologyBabolIran Department of Mechanical Engineering Mazandaran Institute of TechnologyBabolIran

During recent years,atmospheric water generation(AWG)has garnered significant attention among researchers as a viable solution to the water-scarcity ***,AWG requires dehumidification,which includes two main principles of refrigeration and *** refrigeration methods,thermoelectric coolers are suitable and,among sorption methods,it is best to utilize desiccant materials with high sorption capacity and low heat *** the present study,a portable hybrid/integrated solar AWG system was designed and tested under realistic conditions of Babol,Iran(36.5387°N,52.6765°E)over four typical summer days between 14 and 31 August *** models(Models A and B)were designed and ***,relative humidity,solar irradiance and water-production data were recorded to assess the system performance(*** ratio between the generated water and consumed power in ml/***)and economically analyse the *** on the results acquired,the maximum water production in the proposed configuration(acquired from Model B)was 2.12 l/m^(2).day at an average relative humidity and a temperature of 52%and 36°C,*** desired AWG system had a system performance of 0.19 ml/***,annual water production of 774.4 l/m^(2),production cost of 0.0246$/l/m^(2)and a payback period of 1.19 years.

关键词： renewable energy solar energy hybrid AWG system TEC cooling sorption

Functionalization of nitrogen-doped graphene quantum dot:A sustainable carbon-based catalyst for the production of cyclic carbonate from epoxide and CO_(2)

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Journal of Environmental Sciences 2023年第4期126卷 408-422页

作者： Zahra Eshaghi gorji Abbas Ali Khodadadi Siavash Riahi Timo Repo Yadollah Mortazavi Marianna Kemell Catalysis and Nanostructured Materials Research Laboratory School of Chemical EngineeringCollege of EngineeringUniversity of TehranTehran ***Iran Department of Chemistry University of HelsinkiHelsinki 00014Finland Institute of Petroleum Engineering School of Chemical EngineeringCollege of EngineeringUniversity of TehranTehran ***Iran

A series of organic compounds were successfully immobilized on an N-doped graphene quantum dot (N-GQD) to prepare a multifunctional organocatalyst for coupling reaction between CO_(2)and propylene oxide (PO).The simultaneous presence of halide ions in conjunction with acidic-and basic-functional groups on the surface of the nanoparticles makes them highly active for the production of propylene carbonate (PC).The effects of variables such as catalyst loading,reaction temperature,and structure of substituents are *** proposed catalysts were characterized by different techniques,including Fourier transform infrared spectroscopy (FTIR),field emission scanning electron microscopy/energy dispersive X-ray microanalysis (FESEM/EDX),thermogravimetric analysis (TGA),elemental analysis,atomic force microscopy (AFM),and ultraviolet–visible (UV-Vis) *** optimal reaction conditions,3-bromopropionic acid (BPA) immobilized on N-GQD showed a remarkable activity,affording the highest yield of 98%at 140℃ and 106Pa without any co-catalyst or *** new metal-free catalysts have the advantage of easy separation and reuse several *** on the experimental data,a plausible reaction mechanism is suggested,where the hydrogen bonding donors and halogen ion can activate the epoxide,and amine functional groups play a vital role in CO_(2)adsorption.

关键词： Heterogeneous organocatalyst CO_(2) Propylene carbonate N-doped graphene quantum dot Nanomaterials

Deposition and doping of CdS/CdTe thin film solar cells

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Journal of Semiconductors 2015年第5期36卷 19-23页

作者： Nima E.gorji Department of Electrical Electronics and Information EngineeringUniversity of Bologna

1% oxygen is incorporated into both CdS and CdTe layers through RF sputtering of CdS/CdTe thin film solar cells. The optical and electrical parameters of the oxygenated and OE-free devices are compared after CdC12 treatment and annealing in ambient Ar and/or air. The effects of ambient annealing on the electrical and optical properties of the films are investigated using current-voltage characterization, field emission scanning electron microscopy, X-ray diffraction, and optical transmission spectroscopy. The 1% oxygen content can slightly increase the grain size while the crystallinity does not change. Annealing in ambient Ar can increase the transmission rate of the oxygenated devices.

关键词： CdTe thin film oxygen incorporation SEM X-ray diffraction

Modeling the defect distribution and degradation of CdTe ultrathin films

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Journal of Semiconductors 2014年第12期35卷 1-4页

作者： Nima E.gorji Department of New Technologies University of Tabriz

The defect distribution across an ultrathin film CdTe layer of a CdS/CdTe solar cell is modelled by solving the balance equation in steady state. The degradation of the device parameters due to the induced defects during ion implantation is considered where the degradation rate is accelerated if the defect distribution is *** defect concentration is maximum at the surface of the CdTe layer where implantation is applied and it is minimum at the junction with the CdS layer. It shows that ultrathin devices degrade faster if the defect concentration is high at the junction rather than the back region（CdTe/Metal）. Since the front and back contacts of the device are close in ultrathin films and the electric field is strong to drive the defects into the junction, the p-doping process might be precisely controlled during ion implantation. The modeling results presented here are in agreement with the few available experimental reports in literature about the degradation and defect configuration of the ultrathin CdTe films.

关键词： defect distribution ultrathin films Cd Te degradation ion implantation

LAMINAR DISSIPATIVE FLOW IN A POROUS CHANNELBOUNDED BY ISOTHERMAL PARALLEL PLATES

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Applied Mathematics and Mechanics(English Edition) 2005年第5期26卷 587-593页

作者： Kamel Hooman Mofid gorji-Bandpy Mechanical Engineering Department Mazandaran UniversityP.O. Box 484BabolIranMechanical Engineering DepartmentMazandaran UniversityP.O. Box 484BabolIran

The effects of viscous dissipation on thermal entrance heat transfer in a parallel plate channel filled with a saturated porous medium,is investigated analytically on the basis of a Darcy *** case of isothermal boundary is *** local and the bulk temperature distribution along with the Nusselt number in the thermal entrance region were found. The fully developed Nusselt number, independent of the Brinkman number, is found to be 6. It is observed that neglecting the effects of viscous dissipation would lead to the well-known case of internal flows,with Nusselt number equal to 4 93.A finite difference numerical solution is also utilized. It is seen that the results of these two methods, analytical and numerical, are in good agreement.

关键词： heat transfer Nusselt number forced convection porous medium viscous dissipation

Dental stem cells:The role of biomaterials and scaffolds in developing novel therapeutic strategies

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World Journal of Stem Cells 2020年第9期12卷 897-921页

作者： Cornelia Larissa Granz Ali gorji Epilepsy Research Center Westfälische Wilhelms-Universität MünsterMünster 48149Germany Department of Neurosurgery and Department of Neurology Westfälische Wilhelms-UniversitätMünster 48149Germany Shefa Neuroscience Research Center Khatam Alanbia HospitalTehran ***Iran Neuroscience Research Center Mashhad University of Medical SciencesMashhad ***Iran

Dental stem cells(DSCs)are self-renewable cells that can be obtained easily from dental tissues,and are a desirable source of autologous stem *** use of DSCs for stem cell transplantation therapeutic approaches is attractive due to their simple isolation,high plasticity,immunomodulatory properties,and multipotential *** appropriate scaffolds loaded with favorable biomolecules,such as growth factors,and cytokines,can improve the proliferation,differentiation,migration,and functional capacity of DSCs and can optimize the cellular morphology to build tissue constructs for specific *** enormous variety of scaffolds have been used for tissue engineering with *** these,the scaffolds that particularly mimic tissue-specific micromilieu and loaded with biomolecules favorably regulate angiogenesis,cell-matrix interactions,degradation of extracellular matrix,organized matrix formation,and the mineralization abilities of DSCs in both in vitro and in vivo *** represent a promising cell source for tissue engineering,especially for tooth,bone,and neural tissue *** purpose of the present review is to summarize the current developments in the major scaffolding approaches as crucial guidelines for tissue engineering using DSCs and compare their effects in tissue and organ regeneration.

关键词： Cell transplantation Regenerative medicine Tissue engineering Neural crest Angiogenesis Biomolecules