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Biodegradation of Medicinal Plants Waste in an Anaerobic Digestion Reactor for Biogas Production

Computers, Materials & Continua 2018年第6期55卷 381-392页

作者： Kabir Fardad Bahman Najafi sina Faizollahzadeh Ardabili Amir Mosavi Shahaboddin Shamshirband Timon Rabczuk Department of Biosystem Engineering University of Mohaghegh Ardabili56199-11367 ArdabilIran Institute of Structural Mechanics Bauhaus University Weimar99423 WeimarGermany Institute of Automation Kando Kalman Faculty of Electrical EngineeringObudai University1431 BudapestHungary Department for Management of Science and Technology Development Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Information Technology Ton Duc Thang UniversityHo Chi Minh CityVietnam

Glycyrrhiza glabra,Mint,Cuminum cyminum,Lavender and Arctium medicinal are considered as edible plants with therapeutic properties and as medicinal plants in *** extraction process of medicinal plants,residual wastes are not suitable for animal feed and are considered as waste and as an environmental *** present there is no proper management of waste of these plants and they are burned or *** present study discusses the possibility of biogas production from Glycyrrhiza Glabra Waste(GGW),Mentha Waste(MW),Cuminum Cyminum Waste(CCW),Lavender Waste(LW)and Arctium Waste(AW).250 g of these plants with TS of 10%were digested in the batch type reactors at the temperature of 35℃.The highest biogas production rate were observed to be 13611 mL and 13471 mL for CCW and GGW(10%TS),*** the maximum methane was related to GGW with a value of 9041 mL(10%TS).The highest specific biogas and methane production were related to CCW with value of 247.4 mL.(***)-1 and 65.1 mL.(***)-1,*** an important result,it was obvious that in lignocellulose materials,it cannot be concluded that the materials with similar ratio of C/N has the similar digestion and biogas production ability.

关键词： Biogas environmental threat lignocellulose substances medicinal plants residual wastes

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Multiscale Evaluation of Mechanical Properties for Metal-Coated Lattice Structures

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Chinese Journal of Mechanical Engineering 2023年第4期36卷 271-280页

作者： Lizhe Wang Liu He Xiang Wang sina Soleimanian Yanqing Yu Geng Chen Ji Li Min Chen School of Advanced Technology Xi’an Jiaotong-Liverpool UniversitySuzhou 210053China School of Engineering University of LiverpoolLiverpool L693BXUK Key Laboratory of MEMS of the Ministry of Education Southeast UniversityNanjing 210096China School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China

With the combination of 3D printing and electroplating technique,metal-coated resin lattice is a viable way to achieve lightweight design with desirable ***,due to high structural complexity,mechanical analysis of the macroscopic lattice structure demands high experimental or numerical *** efficiently investigate the mechanical behaviors of such structure,in this paper a multiscale numerical method is proposed to study the effective properties of the metal-coated Body-Centered-Cubic(BCC)*** studies of a similar kind in which the effective parameters can be predicted from a single unit cell model,it is noticed that the size effect of representative volume element(RVE)is severe and an insensitive prediction can be only obtained from models containing *** this end,the paper determines the minimum number of unit cells in single *** on the proposed method that is validated through the experimental comparison,parametric studies are conducted to estimate the impact of strut diameter and coating film thickness on structural *** is shown that the increase of volume fraction may improve the elastic modulus and specific modulus *** contrast,the increase of thickness of coating film only leads to monotonously increased elastic *** this reason,there should be an optimal coating film thickness for the specific modulus of the lattice *** work provides an effective method for evaluating structural mechanical properties via the mesoscopic model.

关键词： Metal-coated lattice Homogenization theory Parametric study Elastic and specific modulus

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Optoelectronic devices based on two-dimensional transition metal dichalcogenides

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Nano Research 2016年第6期9卷 1543-1560页

作者： He Tian Matthew L. Chin sina Najmaei Qiushi Guo Fengnian Xia Hart Wang Madan Dubey Ming Hsieh Department of Electrical Engineering University of Southern California Los Angeles California 90089 USA United States Army Research Laboratory Maryland 20783-1197 USA Department of Electrical Engineering Yale University Connecticut 06511 USA

In the past few years, two-dimensional （2D） transition metal dichalcogenide （TMDC） materials have attracted increasing attention of the research community, owing to their unique electronic and optical properties, ranging from the valley-spin coupling to the indirect-to-direct bandgap transition when scaling the materials from multi-layer to monolayer. These properties are appealing for the development of novel electronic and optoelectronic devices with important applications in the broad fields of communication, computation, and healthcare. One of the key features of the TMDC family is the indirect-to-direct bandgap transition that occurs when the material thickness decreases from multilayer to monolayer, which is favorable for many photonic applications. TMDCs have also demonstrated unprecedented flexibility and versatility for constructing a wide range of heterostructures with atomic-level control over their layer thickness that is also free of lattice mismatch issues. As a result, layered TMDCs in combination with other 2D materials have the potential for realizing novel high-performance optoelectronic devices over a broad operating spectral range. In this article, we review the recent progress in the synthesis of 2D TMDCs and optoelectronic devices research. We also discuss the challenges facing the scalable applications of the family of 2D materials and provide our perspective on the opportunities offered by these materials for future generations of nanophotonics technology.

关键词： transition metaldichalcogenides (TMDCs),optoelectronic device,molybdenum disulfide(MoS2) photodetector,light-emitting diode (LED)

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A physics informed bayesian optimization approach for material design: application to NiTi shape memory alloys

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npj Computational Materials 2023年第1期9卷 85-95页

作者： Danial Khatamsaz Raymond Neuberger Arunabha M.Roy sina Hossein Zadeh Richard Otis Raymundo Arróyave Materials Science and Engineering Department Texas A&M UniversityCollege StationTX 77843USA Engineering and Science Directorate Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCA 91109USA Mechanical Engineering Department Texas A&M UniversityCollege StationTX 77843USA Department of Industrial&Systems Engineering Texas A&M UniversityCollege StationTX 77843USA

The design of materials and identification of optimal processing parameters constitute a complex and challenging task,necessitating efficient utilization of available *** Optimization(BO)has gained popularity in materials design due to its ability to work with minimal ***,many BO-based frameworks predominantly rely on statistical information,in the form of input-output data,and assume black-box objective *** practice,designers often possess knowledge of the underlying physical laws governing a material system,rendering the objective function not entirely black-box,as some information is partially *** this study,we propose a physics-informed BO approach that integrates physics-infused kernels to effectively leverage both statistical and physical information in the decision-making *** demonstrate that this method significantly improves decision-making efficiency and enables more data-efficient *** applicability of this approach is showcased through the design of NiTi shape memory alloys,where the optimal processing parameters are identified to maximize the transformation temperature.

关键词： alloys shape approach

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Recognition of defensive factors in the architectural heritage of Iran’s organic ancient shelters

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Frontiers of Architectural Research 2022年第4期11卷 709-730页

作者： Mohammad Sadegh Taher Tolou Del Zahra Sadooghi sina Kamali Tabrizi Faculty of Architectural Engineering and Urban Design Shahid Rajaee Teacher Training UniversityTehranIran Faculty of Architectural Engineering Shahid Rajaee Teacher Training UniversityTehranIran

In ancient Iran, in addition to defensive elements such as castles, fortresses, and fortifications, there were underground cities called dastkand. These cities had a shelter-protection function and provided safe space to protect residents when enemies attacked. In the scope of dastkand architectural studies, form typology, land-use typology, and provision of thermal comfort have been investigated in various studies but there is no study on dastkand defensive architecture, which is the main purpose of the present research. The research method is a mixed method (qualitative-quantitative). The required data are collected through a survey and then, analyzed using factor analysis in R method. The statistical population includes Iranian architectural heritage specialists and the sample size is estimated to be 165 persons. Sampling adequacy is confirmed based on the results of KMO test. The samples are selected using a non-probability sampling method. The obtained results indicate that ten factors have been effective in the architecture of Iran’s ancient organic shelters. In order from largest to smallest coefficient of variance, the factors include collective defense, multi-layered defense, environmental camouflage, path control, self-sufficiency, secret passage, sustainable architecture, residential values, covert surveillance, and cluster development.

关键词： Architectural heritage Dastkand Defensive architecture Organic shelter Underground cities

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Differences and similarities between mesenchymal stem cell and endothelial progenitor cell immunoregulatory properties against T cells

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World Journal of Stem Cells 2021年第8期13卷 971-984页

作者： Mehdi Razazian Maryam Khosravi Sheyda Bahiraii Georges Uzan Sara Shamdani sina Naserian Institut national de la santéet de la recherche médicale(Inserm)UnitéMixte de Recherche-Inserm-Ministère de la Défense 1197 Hôpital Paul BrousseVillejuif 94800France Microenvironment&Immunity Unit Institut PasteurParis 75724France Institut national de la santéet de la recherche médicale(Inserm)Unit 1224 Paris 75724France Department of Pharmacognosy University of ViennaVienna 1090Austria Paris-Saclay University Villejuif 94800France CellMedEx Saint Maur Des Fossés 94100France

Bone-marrow-derived mesenchymal stem cells and endothelial progenitor cells have some interesting biological properties that make them unique for cell therapy of degenerative and cardiovascular *** both cell populations have been already studied and used for their regenerative potentials,recently their special immunoregulatory features have brought much more *** stem cells and endothelial progenitor cells have both proangiogenic functions and have been shown to suppress the immune response,particularly T cell proliferation,activation,and cytokine *** makes them suitable choices for allogeneic stem cell ***,these two cells do not have equal immunoregulatory *** elements including their extraction sources,age/passage,expression of different markers,secretion of bioactive mediators,and some others could change the efficiency of their immunosuppressive ***,to our knowledge,no publication has yet compared mesenchymal stem cells and endothelial progenitor cells for their immunological interaction with T *** review aims to specifically compare the immunoregulatory effect of these two populations including their T cell suppression,deactivation,cytokine production,and regulatory T cells induction ***,it evaluates the implications of the tumor necrosis factor alpha-tumor necrosis factor receptor 2 axis as an emerging immune checkpoint signaling pathway controlling most of their immunological properties.

关键词： Endothelial Progenitor Cells Mesenchymal Stem Cells T cells Immunosuppression Immunoregulation TNFα-TNFR2 signaling pathway

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Asymmetry in genitalia is in sync with lateralized mating behavior but not with the lateralization of other behaviors

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Current Zoology 2020年第1期66卷 71-81页

作者： Julian TORRES-DOWDALL sina J.ROMETSCH Gaston AGUILERA Guillermo GOYENOLA Axel MEYER Department of Biology University of KonstanzKonstanzGermany Zukunftskolleg University of KonstanzKonstanzGermany Hector Fellow Academy KarlsruheGermany Unidad Ejecutora Lillo(CONICET) Fundacion Miguel LilloTucumanArgentina Departamento de Ecologia y Gestion Ambiental Centro Universitario Regional Del EsteUniversidad de la RepublicaUruguay

Asymmetries in bilateral organisms attract a lot of curiosity given that they are conspicuous departures from the *** allow the investigation of the integration at different levels of biological *** we study whether and how behavioral and asymmetrical anatomical traits coevolved and work *** ask if asymmetry is determined locally for each trait or at a whole individual level in a species bearing conspicuous asymmetrical *** genitalia evolved in many species;however,in most cases the direction of asymmetry is ***,it has been rarely determined if there is an association between the direction of asymmetry in genitalia and other *** onesided livebearer fish of the genus Jenynsia(Cyprinodontiformes,Anablepidae),the anal fin of males is modified into a gonopodium,an intromittent organ that serves to inseminate *** gonopodium shows a conspicuous asymmetry,with its tip bending either to the left or the *** surveying 13 natural populations of Jenynsia lineata,we found that both genital morphs are equally common in wild *** a series of experiments in a laboratory population,we discovered asymmetry and lateralization for multiple other traits;yet,the degree of integration varied highly among *** in exploratory behavior in response to different stimuli was not associated with genital ***,the direction of genital asymmetry was positively correlated with sidedness of mating preference and the number of neuromasts in the lateral *** suggests integration of functionally linked asymmetric traits;however,there is no evidence that asymmetry is determined at the whole individual level in our study species.

关键词： antisymmetry behavioral lateralization Jenynsia iineata Jenynsia multidentata phenotypic integration

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Effect of Low-Pressure Nitrogen DC Plasma Treatment on the Surface Properties of Biaxially Oriented Polypropylene, Poly (Methyl Methacrylate) and Polyvinyl Chloride Films

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Plasma Science and Technology 2013年第4期15卷 362-367页

作者： S. Hamideh MORTAZAVI Mahmood GHORANNEVISS Soheil PILEHVAR sina ESMAEILI Shamim ZARGHAM S. Ebrahim HASHEMI Hamzeh JODAT Plasma Physics Research Center Science and Research Branch Islamic Azad University Tehran Iran Polymer Engineering Group Composite Science and Technology Research CenterTehran Iran Plasma Physics Research Center Science and Research Branch Islamic Azad UniversityTehran Iran Polymer Engineering Center Science and Research Branch Islamic Azad UniversityTehran Iran Polymer Engineering Group Composite Science and Technology Research CenterTehran Iran

In this study, commercial biaxially oriented polypropylene （BOPP）, polyvinyl chlo- ride （PVC） and poly （methyl methacrylate）（PMMA） films were treated with nitrogen plasma over different exposure times in a Pyrex tube surrounded by a DC variable magnetic field. The chemi- cal changes that appeared on the surface of the samples were investigated using Fourier transform infrared （FT4R） spectroscopy and attenuated total reflectance Fourier transform infrared （ATR- FTIR） spectroscopy after treatment for 2 min, 4 min and 6 rain in a nitrogen plasma chamber. Effects of the plasma treatment on the surface topographies and contact angles of the untreated and plasma treated films were also analyzed by atomic force microscopy （AFM） and a contact angle measuring system. The results show that the plasma treated films become more hydrophilic with an enhanced wettability due to the formation of some new polar groups on the surface of the treated films. Moreover, at higher exposure times, the total surface energy in all treated films increased while a reduction in contact angle occurred. The behavior of surface roughness in each sample was completely different at higher exposure times.

关键词： plasma surface treatment biaxially oriented polypropylene polyvinyl chlo-ride poly (methyl methacrylate) wettability

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Security Implications of Edge Computing in Cloud Networks

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Journal of Computer and Communications 2024年第2期12卷 26-46页

作者： sina Ahmadi National Coalition of Independent Scholars (NCIS) Seattle USA

Security issues in cloud networks and edge computing have become very common. This research focuses on analyzing such issues and developing the best solutions. A detailed literature review has been conducted in this regard. The findings have shown that many challenges are linked to edge computing, such as privacy concerns, security breaches, high costs, low efficiency, etc. Therefore, there is a need to implement proper security measures to overcome these issues. Using emerging trends, like machine learning, encryption, artificial intelligence, real-time monitoring, etc., can help mitigate security issues. They can also develop a secure and safe future in cloud computing. It was concluded that the security implications of edge computing can easily be covered with the help of new technologies and techniques.

关键词： Edge Computing Cloud Networks Artificial Intelligence Machine Learning Cloud Security

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Improved IChOA-Based Reinforcement Learning for Secrecy Rate Optimization in Smart Grid Communications

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Computers, Materials & Continua 2024年第11期81卷 2819-2843页

作者： Mehrdad Shoeibi Mohammad Mehdi Sharifi Nevisi Sarvenaz Sadat Khatami Diego Martín Sepehr Soltani sina Aghakhani The WPI Business School Worcester Polytechnic InstituteWorcesterMA 01609-2280USA Department of Computer Science Escuela de Ingeniería Informática de SegoviaUniversidad de ValladolidSegovia40005Spain Department of Data Science Engineering University of HoustonHoustonTX 77204USA Department of Industrial Engineering College of EngineeringUniversity of HoustonHoustonTX 77204USA Department of Industrial and Manufacturing Systems Engineering Iowa State UniversityAmesIA 50011USA

In the evolving landscape of the smart grid(SG),the integration of non-organic multiple access(NOMA)technology has emerged as a pivotal strategy for enhancing spectral efficiency and energy ***,the open nature of wireless channels in SG raises significant concerns regarding the confidentiality of critical control messages,especially when broadcasted from a neighborhood gateway(NG)to smart meters(SMs).This paper introduces a novel approach based on reinforcement learning(RL)to fortify the performance of *** by the need for efficient and effective training of the fully connected layers in the RL network,we employ an improved chimp optimization algorithm(IChOA)to update the parameters of the *** integrating the IChOA into the training process,the RL agent is expected to learn more robust policies faster and with better convergence properties compared to standard optimization *** can lead to improved performance in complex SG environments,where the agent must make decisions that enhance the security and efficiency of the *** compared the performance of our proposed method(IChOA-RL)with several state-of-the-art machine learning(ML)algorithms,including recurrent neural network(RNN),long short-term memory(LSTM),K-nearest neighbors(KNN),support vector machine(SVM),improved crow search algorithm(I-CSA),and grey wolf optimizer(GWO).Extensive simulations demonstrate the efficacy of our approach compared to the related works,showcasing significant improvements in secrecy capacity rates under various network *** proposed IChOA-RL exhibits superior performance compared to other algorithms in various aspects,including the scalability of the NOMA communication system,accuracy,coefficient of determination(R2),root mean square error(RMSE),and convergence *** our dataset,the IChOA-RL architecture achieved coefficient of determination of 95.77%and accuracy of 97.41%in validation *** was accompanied by the lowes

关键词： Smart grid communication secrecy rate optimization reinforcement learning improved chimp optimization algorithm

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