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Power Maximization of A Point Absorber Wave Energy Converter Using Improved Model Predictive Control

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China Ocean Engineering 2017年第4期31卷 510-516页

作者： Farideh MILANI reihaneh Kardehi MOGHADDAM Department of Electrical Engineering Mashhad Branch Islamic Azad University Mashhad Iran

This paper considers controlling and maximizing the absorbed power of wave energy converters for irregular waves. With respect to physical constraints of the system, a model predictive control is applied. Irregular waves’ behavior is predicted by Kalman filter method. Owing to the great influence of controller parameters on the absorbed power, these parameters are optimized by imperialist competitive algorithm. The results illustrate the method’s efficiency in maximizing the extracted power in the presence of unknown excitation force which should be predicted by Kalman filter.

关键词： wave energy converter Kalman filter model predictive control imperialist competitive algorithm

Maximizing the Absorbed Power of A Point Absorber Using An FA-Based Optimized Model Predictive Control

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China Ocean Engineering 2018年第6期32卷 696-705页

作者： Negar RAHIMI reihaneh Kardehi MOGHADDAM Department of Electrical Engineering Mashhad Branch Islamic Azad University

This paper presents an extended model predictive controller for maximizing the absorbed power of a point absorber wave energy converter. Owing to the great influence of controller parameters upon the absorbed power, the optimization of these parameters is carried out for the first time by a firefly algorithm(FA). Error, the difference between output velocity of buoy and input wave speed which leads to power maximization in the optimized MPC is compared with the classical MPC. Simulation results indicate that given the high accuracy and acceptable speed of the algorithm, it can adjust the parameters of the controller to the point where system error decreased effectively and the absorbed energy increased about 4 MW.

关键词： wave energy point absorber predictive controller firefly algorithm

Enlarging the guaranteed region of attraction in nonlinear systems with bounded parametric uncertainty

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第3期14卷 214-221页

作者： Sara HAGHIGHATNIA reihaneh Kardehi MOGHADDAM Department of Electrical Engineering Mashhad BranchIslamic Azad University

A novel approach to enlarge the guaranteed region of attraction in nonlinear systems with bounded parametric uncertainties based on the design of a nonlinear controller is *** robust domain of attraction(RDA) is estimated using the parameter-dependent quadratic Lyapunov function and enlarged by the optimal controlling *** problem of extending the RDA is indicated in a form of three-layer optimization *** examples illustrate the efficiency of the proposed strategy in enlarging RDA.

关键词： Lyapunov function(LF) Optimal controlling parameters Robust domain of attraction(RDA)

An Investigation into the Magnetic Properties of Nickel Nano-grains Synthesized Via Thermal Decomposition Techniques

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Chinese Journal of Chemistry 2011年第6期29卷 1119-1123页

作者： Malakooti, reihaneh Takhti, Yalda Mirzajani, Roya Nanochemistry Research Laboratory Department of Chemistry University of Birjand Birjand Iran P. O. BOX 97175615 Iran Department of Chemistry Shahid Chamran University of Ahvaz Ahvaz Iran

Nickel nanoparticles were synthesized through the thermal decomposition of nickel（II） acetylacetonate in con- junction with the two methods of hot-injection and heating-up at elevated temperatures in alkylamine. Using several mole ratios of the oleic acid, different morphologies were obtained. The synthesized particles were characterized via XRD, SEM, TEM, SAED and EDAX. Mean particle size was revealed to range from 25 to 45 nm. Presence of crystallized particles in HCP with little FCC phases was also confirmed with XRD patterns. Magnetic hysteresis loops measured by the VSM showed that the magnetic properties of Ni nanoparticles （i.e., coercivity, saturation magnetization and relative permeability） were much enhanced in comparison with the bulk.

关键词： hot-injection heating-up nickel

Pediatric endocrinopathies related to COVID‑19:an update

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World Journal of Pediatrics 2023年第9期19卷 823-834页

作者： Elmira Haji Esmaeli Memar reihaneh Mohsenipour Seyedeh Taravat Sadrosadat Parastoo Rostami Pediatric Center of Excellence Tehran University of Medical SciencesTehranIran Growth and Development Research Center Children’s Medical CenterTehran University of Medical SciencesTehranIran Universal Scientific Education and Research Network(USERN) TehranIran Children’s Medical Center Pediatric Center of ExcellenceTehran University of Medical SciencesTehranIran Growth and Development Research Center Department of Endocrinology and MetabolismPediatric Center of ExcellenceChildren’s Medical CenterTehran University of Medical SciencesTehranIran

Background Coronavirus disease 2019(COVID-19)is a disease caused by the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the seventh coronavirus to be linked to human *** SARS-CoV-2 virus may have several pathophysiologic interactions with endocrine systems,resulting in disruptions in glucose metabolism,hypothalamus and pituitary function,adrenal function,and mineral *** increasing amount of evidence demonstrates both the influence of underlying endocrine abnormalities on the outcome of COVID-19 and the effect of the SARS-CoV-2 virus on endocrine ***,a systematic examination of the link to pediatric endocrine diseases has been *** sources The purpose of this review is to discuss the impact of SARS-CoV-2 infection on endocrine systems and to summarize the available knowledge on COVID-19 consequences in children with underlying endocrine *** this purpose,a literature search was conducted in EMBASE,and data that were discussed about the effects of COVID-19 on endocrine systems were used in the current *** Treatment suggestions were provided for endocrinopathies associated with SARS-CoV-2 *** With the global outbreak of COVID-19,it is critical for pediatric endocrinologists to understand how SARSCoV-2 interacts with the endocrine system and the therapeutic concerns for children with underlying problems who develop *** children and adults share certain risk factors for SARS-CoV-2 infection sequelae,it is becoming obvious that pediatric responses are different and that adult study results cannot be *** pediatric research gives some insight,it also shows the need for more study in this area.

关键词： Coronavirus disease 2019(COVID-19) Endocrine Infection Pediatrics

Gastroprotective herbs for headache management in Persian medicine:A comprehensive review

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Journal of Integrative Medicine 2020年第1期18卷 1-13页

作者： Maryam Naeimi Narjes Gorji Zahra Memariani reihaneh Moeini Mohammad Kamalinejad Fatemeh Kolangi Department of Persian Medicine School of Persian MedicineBabol University of Medical SciencesBabol ***Iran Traditional Medicine and History of Medical Sciences Research Center Health Research InstituteBabol University of Medical SciencesBabol ***Iran School of Pharmacy Shahid Beheshti University of Medical SciencesTehran ***Iran Golestan Research Center of Gastroenterology and Hepatology Golestan University of Medical SciencesGorgan ***Iran

The gut-brain axis is a bidirectional communication system that exists between the brain and gut. Several studies claimed that some types of headaches are associated with various gastrointestinal(GI) *** Persian medicine(PM), physicians believed that gastric disturbances could stimulate headache and introduced some herbs for boosting gastric function as a therapeutic remedy for headache. Here we review the current evidence for the gastroprotective and antiheadache effects of herbs used in *** used for their gastrotonic effects in PM were identified from selected Persian medical and pharmaceutical textbooks. Pub Med, Scopus and Google Scholar were used to search for contemporary scientific evidence relating to the gastric and neurologic effects of these plants. A total of 24 plants were recorded from the selected sources included in this review, most of which belonged to the Rosaceae *** emblica, Zingiber officinale, Boswellias errata, Punica granatum and Hypericum perforatum had the most recent studies related to GI disorder and headache, while current research about quince, rose,apple, hawthorn and pear was limited. Reducing Helicobacter pylori growth, gastritis, erosion of the stomach lining, hemorrhage and perforation, improving gastric mucosal resistance, antisecretary, antiulcer,antipyretic, analgesic, sedative, anxiolytic, anti-inflammatory, anticonvulsant, neuroprotective and antioxidant effects as well as improvement in memory scores were some of the gastrotonic and neuroprotective mechanisms described in the current research. These results confirmed that medicinal plants prescribed in PM may improve headache in patients through the management of GI ***, further studies are recommended to investigate the efficacy and safety of the mentioned medicinal plants.

关键词： Traditional medicine Gastrointestinal diseases Headache Gastroprotective agent

Copper-nickel rubeanate metal-organic framework, a new highly stable and long active life nanocomposite for high-performance supercapacitors

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Journal of Materiomics 2022年第4期8卷 843-851页

作者： Ali A.Ensafi reihaneh Fazel Behzad Rezaei Jin-Song Hu Department of Chemistry Isfahan University of TechnologyIsfahan84156-83111Iran Adjunct Professor Department of Chemistry&BiochemistryUniversity of ArkansasFayettevilleAR 72701USA Institute of Chemistry Chinese Academy of SciencesBeijing100190China

High-performance supercapacitors require electrodes featuring a high surface area,suitable porosity,and ***-organic frameworks(MOFs)hold a high surface area and suitable porosity while insufficient ***,a single-step chemical strategy was developed to directly synthesize a composite of copper-nickel rubeanate MOF and highly conductive reduced graphene oxide(rGO)nanosheets(CNRG-MOF)on nickel foam(CNRG-MOF/NF)*** nanocomposite enables it to use as a high-performance supercapacitor *** bimetallic CNRG-MOF/NF electrode exhibits su-perior electrochemical performance than its single metallic *** optimized CNRG-MOF/NF electrode represents a high specific capacitance of 846.15 F g1 at a current density of 1.0 A g1.A three-electrode system exhibited up to 96.37%capacitance retention after 7000 galvanostatic charge-discharge(GCD)cycles,indicating its excellent *** results may pave the way for the direct use of MOF materials for electrochemical energy devices instead of pyrolyzing the MOFs to improve the conductivity while losing controllable structural *** curve was obtained at different current densities to evaluate the nanocomposite's asymmetric setup charge storage *** electrode capacity for the asymmetric system was measured as 93.3 F g1,which proves the capacitive property of CNRG-MOF/NF electrode.

关键词： Supercapacitor Copper-nickel rubeanate rGO MOF Asymmetric set up Capacitance retention

Tissue adhesive hemostatic microneedle arrays for rapid hemorrhage treatment

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Bioactive Materials 2023年第5期23卷 314-327页

作者： reihaneh Haghniaz Han-Jun Kim Hossein Montazerian Avijit Baidya Maryam Tavafoghi Yi Chen Yangzhi Zhu Solmaz Karamikamkar Amir Sheikhi Ali Khademhosseini Department of Bioengineering University of CaliforniaLos Angeles410 Westwood PlazaLos AngelesCA90095United States California NanoSystems Institute University of CaliforniaLos Angeles570 Westwood PlazaLos AngelesCA90095United States Terasaki Institute for Biomedical Innovation 11570 W Olympic BoulevardLos AngelesCA90024United States Department of Chemical Engineering The Pennsylvania State UniversityUniversity ParkPA16802United States Department of Biomedical Engineering The Pennsylvania State UniversityUniversity ParkPA16802United States

Blood loss by hemorrhaging wounds accounts for over one-third of~5 million trauma fatalities worldwide every *** not controlled in a timely manner,exsanguination can take lives within a few *** new biomaterials that are easy to use by non-expert patients and promote rapid blood coagulation is an unmet medical ***,biocompatible,and biodegradable microneedle arrays(MNAs)based on gelatin methacryloyl(GelMA)biomaterial hybridized with silicate nanoplatelets(SNs)are developed for hemorrhage *** SNs render the MNAs hemostatic,while the needle-shaped structure increases the contact area with blood,synergistically accelerating the clotting time from 11.5 min to 1.3 min in *** engineered MNAs reduce bleeding by~92%compared with the untreated injury group in a rat liver bleeding ***-containing MNAs outperform the hemostatic effect of needle-free patches and a commercial hemostat in vivo via combining micro-and nanoengineered ***,the tissue adhesive properties and mechanical interlocking support the suitability of MNAs for wound closure *** hemostatic MNAs may enable rapid hemorrhage control,particularly for patients in developing countries or remote areas with limited or no immediate access to hospitals.

关键词： Hemostat Microneedles Hemorrhage Bleeding Gelatin methacryloyl Silicate nanoplatelets

A machine learning-guided design and manufacturing of wearable nanofibrous acoustic energy harvesters

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Nano Research 2024年第10期17卷 9181-9192页

作者： Negar Hosseinzadeh Kouchehbaghi Maryam Yousefzadeh Aliakbar Gharehaghaji Safoora Khosravi Danial Khorsandi reihaneh Haghniaz Ke Cao Mehmet R.Dokmeci Mohammad Rostami Ali Khademhosseini Yangzhi Zhu Terasaki Institute for Biomedical Innovation Los AngelesCA 91367USA Department of Textile Engineering Amirkabir University of Technology(Tehran Polytechnic)Hafez Avenue*** TehranIran Department of Electrical and Computer Engineering University of British ColumbiaVancouverBC V6T1Z4Canada Chemical Sciences Division Oak Ridge National LaboratoryOak RidgeTN 37831USA Department of Computer Science University of Southern CaliforniaLos AngelesCA 90007USA

Nanofibrous acoustic energy harvesters(NAEHs)have emerged as promising wearable platforms for efficient noise-to-electricity conversion in distributed power energy systems and wearable sound amplifiers for assistive listening ***,their reallife efficacy is hampered by low power output,particularly in the low-frequency range(<1 kHz).This study introduces a novel approach to enhance the performance of NAEHs by applying machine learning(ML)techniques to guide the synthesis of electrospun polyvinylidene fluoride(PVDF)/polyurethane(PU)nanofibers,optimizing their application in wearable *** use a feed-forward neural network along with solving an optimization problem to find the optimal input values of the electrospinning(applied voltage,nozzle-collector distance,electrospinning time,and drum rotation speed)to generate maximum output performance(acoustic-to-electricity conversion efficiency).We first prepared a dataset to train the network to predict the output power given the input variables with high *** introducing the neural network,we fix the network and then solve an optimization problem using a genetic algorithm to search for the input values that lead to the maximum energy harvesting *** ML-guided wearable PVDF/PU NAEH platform can deliver a maximal acoustoelectric power density output of 829μW/cm^(3) within the surrounding noise *** addition,our system can function stably in a broad frequency(0.1-2 kHz)with a high energy conversion efficiency of 66%.Sound recognition analysis reveals a robust correlation exceeding 0.85 among lexically akin terms with varying sound intensities,contrasting with a diminished correlation below 0.27 for words with disparate semantic ***,this work provides a previously unexplored route to utilize ML in advancing wearable NAEHs with excellent practicability.

关键词： wearable electronics acoustic energy harvester machine learning piezoelectric nanogenerator electrospun nanofiber