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Vitamin D therapy in pediatric patients with inflammatory bowel disease:a systematic review and meta-analysis

World Journal of Pediatrics 2023年第1期19卷 48-57页

作者： Mohammad Hassan Sohouli Fatemeh Farahmand Hosein Alimadadi Parisa Rahmani Farzaneh Motamed Elma Izze da Silva Magalhaes pejman rohani Pediatric Gastroenterology and Hepatology Research Center Pediatrics Centre of ExcellenceChildren's Medical CenterTehran University of Medical SciencesTehranIran Department of Clinical Nutrition and Dietetics Faculty of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran Postgraduate Programme in Collective Health Federal University of MaranhaoRua Barao de Itapary155CentroSao LuísMABrazil Pediatrics Gastroenterology Department of PediatricsSchool of MedicineChildren's Medical CenterTehran University of Medical SciencesTehranIran

Background There is some evidence for the role of vitamin D deficiency in the pathogenesis of inflammatory bowel disease(IBD)in the pediatric ***,the results are ***,we have conducted a systematic review and meta-analysis to evaluated the effect of vitamin D on pediatric patients with *** We carried out a systematic search in databases from inception until 20 January *** included all relevant articles that evaluate the efficacy and safety of vitamin D on disease activity,inflammatory factors,and vitamin D and calcium levels in pediatric patients with *** effects models were used to combine the *** main outcomes were then analyzed using weight mean difference(WMD)and respective 95%confidence interval(CI).Results Fifteen treatment arms met the eligibility criteria and were *** estimates indicated that intervention with vitamin D has a significantly beneficial effect on 25-hydroxy vitamin D3[25(OH)D3](pooled WMD of 17.662 ng/mL;CI 9.77-25.46;P<0.001),calcium(pooled WMD of 0.17 mg/dL;CI 0.04-0.30;P=0.009),and inflammatory factors including C-reactive protein(CRP)(pooled WMD of-6.57 mg/L;CI-11.47 to-1.67;P=0.009)and erythrocyte sedimentation rate(ESR)(pooled WMD of-7.94 mm/h;CI-12.65 to-3.22;P=0.001)*** addition,this effect was greater for vitamin D levels at doses greater than 2000 IU,and when follow-up duration was more than 12 *** This study showed that vitamin D therapy can have a significant and beneficial effect on 25(OH)D3,calcium,and inflammatory factors in children and adolescents with IBD.

关键词： Disease activity index Inflammation Meta-analysis IBD Pediatric Vitamin D

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Feasibility and reliability of agricultural crop height measurement using the laser sensor array

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Information Processing in Agriculture 2024年第2期11卷 228-236页

作者： pejman Alighaleh Tarahom Mesri Gundoshmian Saeed Alighaleh Abbas rohani Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadMashhadIran Department of Biosystems Engineering University of Mohaghegh ArdabiliArdabilIran Auckland Bioengineering Institute University of AucklandNew Zealand

Crop height measurement is widely used to analyze and estimate the overall crop condition and the amount of biomass *** only is manual measurement on a large scale time-consuming but also it is not ***,advanced equipment is available but they require technical skills and are not reasonable for *** article investigates the feasibility of a simple and low-cost measurement system that can monitor crops height of paddy rice and wheat using laser *** designing and fabricating,this system was tested and evaluated in both laboratory and farm *** the laboratory,paddy rice height was measured,and in the field section,the height detection system measured wheat *** results showed that the coefficient of determination(R3)between manual measurement and height detection system measurement for paddy rice was 0.96 and for wheat was ***,there was no significant difference between the two datasets at the level of 5%.Hence,this system can be a useful and accurate tool to monitor crops height in different growing steps.

关键词： Plant height Laser Rice Wheat Crop monitoring

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Lithium-Metal Free Sulfur Battery Based on Waste Biomass Anode and Nano-Sized Li_(2)S Cathode

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Energy & Environmental Materials 2024年第2期7卷 39-47页

作者： pejman Salimi Eleonora Venezia Somayeh Taghavi Sebastiano Tieuli Lorenzo Carbone Mirko Prato Michela Signoretto Jianfeng Qiu Remo Proietti Zaccaria Istituto Italiano di Tecnologia via Morego 30Genoa 16163Italy Department of Chemistry and Industrial Chemistry University of Genovavia Dodecaneso 311-16146Genoa Italy CATMAT Lab Department of Molecular Sciences and NanosystemsCa'Foscari University Venice and INSTM ConsortiumRU of VeniceVia Torino 15530172Venezia Mestre Italy Department of Physics Shaoxing UniversityShaoxing 312000China

The realization of a stable lithium-metal free(LiMF)sulfur battery based on amorphous carbon anode and lithium sulfide(Li_(2)S)cathode is here *** particular,a biomass waste originating full-cell combining a carbonized brewer's spent grain(CBSG)biochar anode with a Li_(2)S-graphene composite cathode(Li_(2)S70Gr30)is *** design is particularly attractive for applying a cost-effective,high performance,environment friendly,and safe anode material,as an alternative to standard graphite and metallic lithium in emerging battery *** anodic and cathodic materials are characterized in terms of structure,morphology and composition through X-ray diffraction,scanning and transmission electron microscopy,X-ray photoelectron and Raman ***,an electrochemical characterization comprising galvanostatic cycling,rate capability and cyclic voltammetry tests were carried out both in half-cell and full-cell *** systematic investigation reveals that unlike graphite,the biochar electrode displays good compatibility with the electrolyte typically employed in sulfur *** CBSG/Li_(2)S70Gr30 full-cell demonstrates an initial charge and discharge capacities of 726 and 537 mAh g^(-1),respectively,at 0.05C with a coulombic efficiency of 74%.Moreover,it discloses a reversible capacity of 330 mAh g^(-1)(0.1 C)after over 300 *** on these achievements,the CBSG/Li_(2)S70Gr30 battery system can be considered as a promising energy storage solution for electric vehicles(EVs),especially when taking into account its easy scalability to an industrial level.

关键词： biochars ether-based electrolytes lithium sulfide lithium-metal free batteries superior cycling stability

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Lithium-Metal-Free Sulfur Batteries with Biochar and Steam-Activated Biochar-Based Anodes from Spent Common Ivy

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ENERGY & ENVIRONMENTAL MATERIALS 2024年第6期7卷 118-128页

作者： Salimi, pejman Vercruysse, Willem Chauque, Susana Yari, Saeed Venezia, Eleonora Lataf, Amine Ghanemnia, Nahal Zafar, Muhammad Shajih Safari, Mohammadhosein Hardy, An Zaccaria, Remo Proietti Vandamme, Dries Ist Italiano Tecnol Via Morego 30 I-16163 Genoa Italy Univ Genoa Dept Chem & Ind Chem Via Dodecaneso 31 I-16146 Genoa Italy Hasselt Univ Analyt & Circular Chem ACC Martelarenlaan 42 BE-3500 Hasselt Belgium Hasselt Univ Inst Mat Res Imoimomec Martelarenlaan 42 BE-3500 Hasselt Belgium Hasselt Univ Ctr Environm Sci CMK Martelarenlaan 42 BE-3500 Hasselt Belgium Energyville Thor Pk 8310 BE-3600 Genk Belgium IMEC Div IMOMEC Wetenschapspk 1 BE-3590 Diepenbeek Belgium

Lithium-sulfur batteries are emerging as sustainable replacements for current lithium-ion batteries. The commercial viability of this novel type of battery is still under debate due to the extensive use of highly reactive lithium-metal anodes and the complex electrochemistry of the sulfur cathode. In this research, a novel sulfur-based battery has been proposed that eliminates the need for metallic lithium anodes and other critical raw materials like cobalt and graphite, replacing them with biomass-derived materials. This approach presents numerous benefits, encompassing ample availability, cost-effectiveness, safety, and environmental friendliness. In particular, two types of biochar-based anode electrodes (non-activated and activated biochar) derived from spent common ivy have been investigated as alternatives to metallic lithium. We compared their structural and electrochemical properties, both of which exhibited good compatibility with the typical electrolytes used in sulfur batteries. Surprisingly, while steam activation results in an increased specific surface area, the non-activated ivy biochar demonstrates better performance than the activated biochar, achieving a stable capacity of 400 mA h g(-1) at 0.1 A g(-1) and a long lifespan (>400 cycles at 0.5 A g-1). Our results demonstrate that the presence of heteroatoms, such as oxygen and nitrogen positively affects the capacity and cycling performance of the electrodes. This led to increased d-spacing in the graphitic layer, a strong interaction with the solid electrolyte interphase layer, and improved ion transportation. Finally, the non-activated biochar was successfully coupled with a sulfur cathode to fabricate lithium-metal-free sulfur batteries, delivering a specific energy density of similar to 600 Wh kg(-1).

关键词： activated biochar biochar electrochemical performance functional groups lithium-metal-free sulfur batteries ION BATTERIES ELECTROCHEMICAL PERFORMANCE MARINE BIOMASS CARBON ANODES HARD CARBON RICE HUSK ELECTROLYTE PYROLYSIS MICROWAVE LIQUID

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Magnetic resonance spectroscopy findings of brain olfactory areas in patients with COVID-19-related anosmia:A preliminary comparative study

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 105-112页

作者： Shadman Nemati Mohammad Haghani Dogahe Alia Saberi Naghi Ramezani pejman Kiani Tofigh Yaghubi Kalurazi Ehsan Kazemnejad Leili Sara Seddighi Abbas Monsef Department of Otolaryngology and Head and Neck Surgery School of MedicineOtorhinolaryngology Research CenterGuilan University of Medical SciencesRashtIran Guilan Road Trauma Research Center Guilan University of Medical SciencesRashtGuilanIran Department of Neurology Neuroscience Research CenterPoursina HospitalGuilan University of Medical SciencesRashtIran Department of Radiology Pars International HospitalGuilan ProvinceIran Department of Neuroscience and Addiction Studies School of Advanced Technologies in MedicineTehranIran Department of Infectious Diseases Razi Clinical Research Development UnitRazi HospitalGuilan University of Medical SciencesRashtIran Center of Magnetic Resonance Research Department of Radiation OncologyUniversity of Minnesota Medical SchoolMinneapolisMinnesotaUSA

Objectives:2019 novel coronavirus disease(COVID-19)infection is commonly associated with olfactory dysfunctions,but the basic pathogenesis of these complications remains *** study seeks to evaluate the value of magnetic resonance spectroscopy(MRS)in determining the molecular neurometabolite alterations within the main brain olfactory areas in patients with COVID-19-related ***:In a cross-sectional study,seven patients with persistent COVID-19-related anosmia(mean age:29.57 years)and seven healthy volunteers(mean age:27.28 years)underwent MRS in which N-acetyl-aspartate(NAA),choline(Cho),creatine(Cr),and their ratios were measured in the anterior cingulate cortex,dorsolateral prefrontal cortex,orbitofrontal cortex(OFC),insular cortex,and ventromedial prefrontal *** were analyzed using TARQUIN software(version 4.3.10),and the results were compared with an independent sample t-test and nonparametric Mann-Whitney test based on the normality of the MRS data ***:The mean duration of anosmia before imaging was 8.5 months in COVID-19-related anosmia *** analysis elucidated a significant association between MRS findings within OFC and COVID-19-related anosmia(P_(disease)<0.01),and NAA was among the most important neurometabolites(P_(interaction)=0.006).Reduced levels of NAA(P<0.001),Cr(P<0.001)and^(NAA)/Cho ratio(P=0.007)within OFC characterize COVID-19-related ***:This study emphasizes that MRS can be illuminating in COVID-19-related anosmia and indicates a possible association between central nervous system impairment and persistent COVID-19-related anosmia.

关键词： anosmia COVID-19 magnetic resonance spectroscopy neuroimaging olfaction

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Comparative investigation of microstructure and high-temperature oxidation resistance of high-velocity oxy-fuel sprayed CoNiCrAlY/nano-Al_(2)O_(3) composite coatings using satellited powders

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1779-1791页

作者： pejman Zamani Zia Valefi Faculty of Materials and Manufacturing Technologies Malek Ashtar University of TechnologyIsfahan 83145/115Iran

Satellited CoNiCrAlY–Al_(2)O_(3)feedstocks with 2wt%, 4wt%, and 6wt% oxide nanoparticles and pure CoNiCrAlY powder were deposited by the high-velocity oxy fuel process on an Inconel738 superalloy substrate. The oxidation test was performed at 1050℃ for 5, 50, 100,150, 200, and 400 h. The microstructure and phase composition of powders and coatings were characterized by scanning electron microscopy and X-ray diffraction, respectively. The bonding strength of the coatings was also evaluated. The results proved that with the increase in the percentage of nanoparticles(from 2wt% to 6wt%), the amount of porosity(from 1vol% to 4.7vol%), unmelted particles, and roughness of the coatings(from 4.8 to 8.8 μm) increased, and the bonding strength decreased from 71 to 48 MPa. The thicknesses of the thermally grown oxide layer of pure and composite coatings(2wt%, 4wt%, and 6wt%) after 400 h oxidation were measured as 6.5, 5.5, 7.6, and 8.1 μm, *** CoNiCrAlY–2wt% Al_(2)O_(3)coating showed the highest oxidation resistance due to the diffusion barrier effect of well-dispersed nanoparticles. The CoNiCrAlY–6wt% Al_(2)O_(3)coating had the lowest oxidation resistance due to its rough surface morphology and porous microstructure.

关键词： MCrAlY coating CoNiCrAlY-Al_(2)O_(3)composite satellited feedstock microstructure high-temperature oxidation high-velocity oxy-fuel spraying

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Physics informed machine learning: Seismic wave equation

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Geoscience Frontiers 2020年第6期11卷 1993-2001页

作者： Sadegh Karimpouli pejman Tahmasebi Mining Engineering Group Faculty of EngineeringUniversity of ZanjanZanjanIran Department of Petroleum Engineering University of WyomingLaramieWY82071USA

Similar to many fields of sciences,recent deep learning advances have been applied extensively in geosciences for both small-and large-scale ***,the necessity of using large training data and the’black box’nature of learning have limited them in practice and difficult to ***,including the governing equations and physical facts in such methods is also another challenge,which entails either ignoring the physics or simplifying them using unrealistic *** address such issues,physics informed machine learning methods have been developed which can integrate the governing physics law into the learning *** this work,a 1-dimensional(1 D)time-dependent seismic wave equation is considered and solved using two methods,namely Gaussian process(GP)and physics informed neural *** show that these meshless methods are trained by smaller amount of data and can predict the solution of the equation with even high *** are also capable of inverting any parameter involved in the governing equation such as wave velocity in our *** show that the GP can predict the solution of the seismic wave equation with a lower level of error,while our developed neural network is more accurate for velocity(P-and S-wave)and density inversion.

关键词： Gaussian process(GP) Physics informed machine learning(PIML) Seismic wave Optimization

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Sequential Gaussian simulation for geosystems modeling:A machine learning approach

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Geoscience Frontiers 2022年第1期13卷 1-14页

作者： Tao Bai pejman Tahmasebi College of Engineering and Applied Science University of WyomingLaramieWY 82071USA

Sequential Gaussian Simulation(SGSIM)as a stochastic method has been developed to avoid the smoothing effect produced in deterministic methods by generating various stochastic *** of the main issues of this technique is,however,an intensive computation related to the inverse operation in solving the Kriging system,which significantly limits its application when several realizations need to be produced for uncertainty *** this paper,a physics-informed machine learning(PIML)model is proposed to improve the computational efficiency of the *** this end,only a small amount of data produced by SGSIM are used as the training dataset based on which the model can discover the spatial correlations between available data and unsampled *** achieve this,the governing equations of the SGSIM algorithm are incorporated into our proposed *** quality of realizations produced by the PIML model is compared for both 2D and 3D cases,visually and ***,computational performance is evaluated on different grid *** results demonstrate that the proposed PIML model can reduce the computational time of SGSIM by several orders of magnitude while similar results can be produced in a matter of seconds.

关键词： Artificial intelligence Uncertainty Geosystems Statistical modeling

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Simulating fluid flow in complex porous materials by integrating the governing equations with deep-layered machines

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npj Computational Materials 2021年第1期7卷 1155-1163页

作者： Serveh Kamrava Muhammad Sahimi pejman Tahmasebi Mork Family Department of Chemical Engineering and Materials Science University of Southern CaliforniaLos AngelesCAUSA College of Engineering and Applied Science University of WyomingLaramieWYUSA

Fluid flow in heterogeneous porous media arises in many systems,from biological tissues to composite materials,soil,wood,and *** advances in instrumentations,high-resolution images of porous media can be obtained and used directly in the simulation of fluid *** computations are,however,highly *** machine learning(ML)algorithms have been used for predicting flow properties of porous media,they lack a rigorous,physics-based foundation and rely on *** introduce an ML approach that incorporates mass conservation and the Navier–Stokes equations in its learning *** training the algorithm to relatively limited data obtained from the solutions of the equations over a time interval,we show that the approach provides highly accurate predictions for the flow properties of porous media at all other times and spatial locations,while reducing the computation *** also show that when the network is used for a different porous medium,it again provides very accurate predictions.

关键词： process porous flow

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Active Vibration Control of a Railway Vehicle Carbody Using Piezoelectric Elements

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Chinese Journal of Mechanical Engineering 2017年第4期30卷 963-972页

作者： Habibollah Molatefi pejman Ayoubi Hozhabr Mozafari Railway Engineering School Iran University of Science and Technology Department of Mechanical & Materials Engineering University of Nebraska-Lincoln

In recent years and according to modem trans- portation development, rail vehicles are manufactured lighter to achieve higher speed and lower transportation costs. On the other hand, weight reduction of rail vehicles leads to increase the structural vibration. In this study, Active Vibration Control of a rail vehicle using piezo- electric elements is investigated. The optimal control employed as the control approach regard to the first two modes of vibration. A simplified Car body structure is modeled in Matlab using the finite element theory by considering six DOF beam element and then the Eigen functions and mode shapes are derived. The surface roughness of different classes of rail tracks have been obtained using random vibration theory and applied to the secondary suspension as the excitation of the structure; Then piezoelectric mounted where the greatest moments were captured. The effectiveness of Piezoelectric in structural vibrations attenuation of car body is demon- strated through the state space equations and its effect on modal coefficient.

关键词： Active vibrationRandom vibrations Modalmethodcontrol Piezoelectric analysis Finite element

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