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Modeling and experimental validation of heat transfer and energy consumption in an innovative greenhouse structure

Information Processing in Agriculture 2016年第3期3卷 157-174页

作者： Morteza Taki Yahya Ajabshirchi Seyed Faramarz Ranjbar Abbas rohani Mansour Matloobi Department of Biosystems Engineering Faculty of AgricultureUniversity of TabrizIran Department of Mechanical Engineering Mechanical Engineering FacultyUniversity of TabrizIran Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadIran Department of Horticultural Science Faculty of AgricultureUniversity of TabrizTabrizIran

The commercial greenhouse is one of the most effective cultivation methods with a yield per cultivated area up to 10 times more than free land cultivation but the use of fossil fuels in this production field is very *** objectives of this paper are to modeling and experimental evaluation of heat and mass transfer functions in an innovative solar greenhouse with thermal *** this propose,a semi-solar greenhouse was designed and constructed at the North-West of Iran in Azerbaijan Province(38100N and 46180E with elevation of 1364 m above the sea level).The inside environment factors include inside air temperature below screen(Ta),inside air temperature above screen(Tas),crop temperature(Tc),inside soil temperature(Ts),cover temperature(Tri)and thermal screen temperature(Tsc)were collected as the experimental data *** dynamic heat and mass transfer model used to estimate the temperature in six different points of the semi-solar greenhouse with initial values and consider the crop *** results showed that dynamic model can predict the inside temperatures in four different points(Ta,Tc,Tri,Ts)with MAPE,RMSE and EF about 5-7%,1-2℃ and 80-91%for greenhouse without thermal screen and about 3-7%,0.6-1.8C and 89-96%for six different points of greenhouse with thermal screen(Ta,Tc,Tri,Ts,Tas,Tsc),*** results of using thermal screen at night(12 h)in autumn showed that this method can decrease the use of fossil fuels up to 58%and so decrease the final cost and air *** movable insulation caused about 15℃ difference between outside and inside air temperature and also made about 6℃ difference between Ta and *** experimental results showed that inside thermal screen can decrease the crop temperature fluctuation at night.

关键词： Semi-solar greenhouse Dynamic model Thermal screen Energy saving

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Synthesis and characterization of lithium niobium borate glasses containing neodymium

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Journal of Rare Earths 2016年第12期34卷 1199-1205页

作者： W.H.A.Kamaruddin M.S.rohani M.R.Sahar LIU Hong SANG Yuanhua AOMRG Lab Physics Department Faculty of Science Universiti Teknologi Malaysia State Key Laboratory of Crystal Materials Shandong University

A series of（90–x）Li2B4O7-10Nb2O5-xNd2O3 glass samples（x=0, 5 mol.%, 10 mol.%, 15 mol.%, 20 mol.% and 25 mol.%） were synthesized using melt quenching technique. X-ray diffraction（XRD）, differential thermal analyzer（DTA）, Fourier transformed infrared（FTIR）, ultraviolet-visible-near-infrared（UV-Vis-NIR） spectrometer and photoluminescence（PL） spectroscopic characterizations were made to examine the influence of Nd3＋ concentration on the physical, structural and optical properties. Various physical properties such as glasses density, molar volume, thermal stability, ion concentration, polar on radius, inter-nuclear distance, field strength, cut-off wavelength, energy band gap and Urbach energy were calculated. The samples were amorphous in nature and confirmed from XRD pattern. The FTIR spectra revealed the presence of BO3 and BO4 functional groups. UV-Vis-NIR spectra exhibited nine prominent bands centered at 353, 430, 475, 524, 583, 681, 745, 803, 875 nm corresponding to the transitions from the ground state to ^4D（3/2）, ^2P（1/2）, ^2G（9/2）, ^4G（7/2）, ^4G（5/2）, ^4F（9/2）, ^4F（7/2）, ^4F（5/2）, ^4F（3/2） excited states, respectively. Moreover, the emission spectra at 355 nm excitation displayed three peaks centered at 903 nm（^4F（3/2）→^4I（9/2））, 1059 nm（^4F（3/2）→^4I（11/2）） and 1333 nm（^4F（3/2）→^4I（13/2））, respectively. Fluorescence lifetime was recorded between 53.69 to 28.43 μs. It was found that varying concentration of Nd^（3＋） ions strongly affected the physical, structural and optical properties of the glass samples.

关键词： borate glass neodymium optical properties band gap luminescence rare earths

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Applied machine learning in greenhouse simulation;new application and analysis

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Information Processing in Agriculture 2018年第2期5卷 253-268页

作者： Morteza Taki Saman Abdanan Mehdizadeh Abbas rohani Majid Rahnama Mostafa Rahmati-Joneidabad Department of Agricultural Machinery and Mechanization Ramin Agriculture and Natural Resources University of KhuzestanMollasaniIran Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadMashhadIran Department of Horticultural Science Faculty of AgricultureRamin Agriculture and Natural Resources University of KhuzestanMollasaniIran

Prediction the inside environment variables in greenhouses is very important because they play a vital role in greenhouse cultivation and energy lost especially in cold and hot *** greenhouse environment is an uncertain nonlinear system which classical modeling methods have some problems to solve *** the main goal of this study is to select the best method between Artificial Neural Network(ANN)and Support Vector Machine(SVM)to estimate three different variables include inside air,soil and plant temperatures(Ta,Ts,Tp)and also energy exchange in a polyethylene greenhouse in Shahreza city,Isfahan province,*** environmental factors which influencing all the inside temperatures such as outside air temperature,wind speed and outside solar radiation were collected as data *** this research,13 different training algorithms were used for ANN models(MLPRBF).Based on K-fold cross validation and Randomized Complete Block(RCB)methodology,the best model was *** results showed that the type of training algorithm and kernel function are very important factors in ANN(RBF and MLP)and SVM models performance,*** RBF,MLP and SVM models showed that the performance of RBF to predict Ta,Tp and Ts variables is better according to small values of RMSE and MAPE and large value of R2 *** range of RMSE and MAPE factors for RBF model to predict Ta,Tp and Ts were between 0.07 and 0.12C and 0.28-0.50%,*** and stability of the RBF model with 5-fold cross validation analysis showed that this method can use with small size of data *** performance of best model(RBF)to estimate the energy lost and exchange in the greenhouse with heat transfer models showed that this method can estimate the real data in greenhouse and then predict the energy lost and exchange with high accuracy.

关键词： Black box method Energy lost Environmental situation Energy exchange

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Design of lightweight magnesium car body structure under crash and vibration constraints

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Journal of Magnesium and Alloys 2014年第2期2卷 99-108页

作者： Morteza Kiani Imtiaz Gandikota Masoud Rais-rohani Keiichi Motoyama Engineering Technology Associates Inc.(ETA) MI 48084USA Center for Advanced Vehicular Systems Mississippi State UniversityMS 39762USA Department of Aerospace Engineering Mississippi State UniversityMS 39762USA

Car body design in view of structural performance and lightweighting is a challenging task due to all the performance targets that must be satisfied such as vehicle safety and ride *** this paper,material replacement along with multidisciplinary design optimization strategy is proposed to develop a lightweight car body structure that satisfies the crash and vibration criteria while minimizing *** finite element simulations,full frontal,offset frontal,and side crashes of a full car model are evaluated for peak acceleration,intrusion distance,and the internal energy absorbed by the structural *** addition,the first three fundamental natural frequencies are combined with the crash metrics to form the design *** wall thicknesses of twenty-two parts are considered as the design *** Hypercube Sampling is used to sample the design space,while Radial Basis Function methodology is used to develop surrogate models for the selected crash responses at multiple sites as well as the first three fundamental natural frequencies.A nonlinear surrogate-based optimization problem is formulated for mass minimization under crash and vibration *** Sequential Quadratic Programming,the design optimization problem is solved with the results verified by finite element *** performance of the optimum design with magnesium parts shows significant weight reduction and better performance compared to the baseline design.

关键词： Multidisciplinary design optimization Magnesium structure Car body structure Crashworthiness Vibration Vehicle design

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Assessment of land suitability and agricultural production sustainability using a combined approach (Fuzzy-AHP-GIS):A case study of Mazandaran province,Iran

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Information Processing in Agriculture 2020年第3期7卷 384-402页

作者： Sherwin Amini Abbas rohani Mohammad Hossein Aghkhani Mohammad Hossein Abbaspour-Fard Mohammad Reza Asgharipour Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadIran Unit of Agroecology Department of AgronomyFaculty of AgricultureUniversity of ZabolZabolIran

This research was conducted to evaluate the sustainability of rice production using fuzzy logic in Mazandaran province,*** untapped use of modern agricultural technology,such as agricultural machinery,has become a global dilemma,which has forced governments and environmentalists to take a serious stand against the dangers of massive non-standard agricultural practices in the *** types of mechanization,socioeconomic,and economic modeling were used to determine the sustainability and their values were collected through interview method using a 320-item questionnaire from 2016 to *** evaluation was carried out using soil and climate characteristics,so that about 27.4%of the area was in the perfectly suitable range(S1),35.2%in the appropriate range(S2),19.5%in the critical range(S3),and 17.9%in the inappropriate range(N)for rice *** were selected from two regions(R1 and R2)by the GIS on two lower levels and more than one hectare(A1,A2)according to agricultural methods(mechanical and traditional).The results showed that the highest and lowest means of the product were 4314.44 and 3501.95 kg ha1,*** sustainability of production was within the range of“sustainability”and“almost sustainable”in terms of mechanistic and economic factors in the fuzzy range of“moderate sustainability”and also with respect to social factors that are in a better position than mechanistic and economic *** of final sustainability model showed that the average of the lasting sustainability index was in the range of“almost unsustainable”and“moderate sustainability”.

关键词： Sustainable agriculture Fuzzy logics Environmental management Rice GIS AHP

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Fabrication, modification and environmental applications of TiO2 nanotube arrays （TNTAs） and nanoparticles

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Frontiers of Chemical Science and Engineering 2012年第1期6卷 112-122页

作者： S. rohani T. ISIMJAN A. MOHAMED H. KAZEMIAN M. SALEM T. WANG Department of Chemical and Biochemical Engineering The University of Western Ontario London N6A 5B9 Canada

Among the semiconductors, titanium dioxide has been identified as an effective photocatalyst due to its abundance, low cost, stability, and superior electronic energy band structure. Highly ordered nanotube arrays of titania were produced by anodization and mild sonication. The band gap energy of the titania nanotube arrays was reduced to 2.6 eV by co-doping with Fe, C, N atoms using an electrolyte solution containing K3Fe（CN）6. The photo- conversion of phenol in a batch photoreactor increased to more than 18% based on the initial concentration of phenol by using a composite nanomaterial consisting of titania nanotube arrays and Pt/ZIF-8 nanoparticles. A layer-by- layer assembly technique for the deposition of titania nanoparticles was developed to fabricate air filters for the degradation of trace amounts of toluene in the air and preparation of superhyrophobic surfaces for oil-water separation and anti-corrosion surfaces.

关键词： TiO2 nanotube arrays and nanoparticles,anodization bandgap modification layer-by-layer deposi-tion oil-water separation

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

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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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Zero-Index Metamaterial Superstrates UWB Antenna for Microwave Imaging Detection

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计算机、材料和连续体（英文） 2023年第4期75卷 277-292页

作者： Mohd Aminudin Jamlos Nur Amirah Othman Wan Azani Mustafa Mohd Faizal Jamlos Mohamad Nur Khairul Hafizi rohani Faculty of Electronic Engineering Technology Universiti Malaysia PerlisPauh Putra Campus02600ArauMalaysia Faculty of Electrical Engineering Technology Universiti Malaysia PerlisPauh Putra Campus02600ArauMalaysia Faculty of Mechanical and Manufacturing Engineering Universiti Malaysia Pahang26600PekanMalaysia

Metamaterials(MTM)can enhance the properties of microwaves and also exceed some limitations of devices used in technical *** that the antenna is the element for realizing a microwave imaging(MWI)system since it is where signal transmission and absorption ***-Wideband(UWB)antenna superstrates with MTM elements to ensure the signal transmitted from the antenna reaches the tumor and is absorbed by the same *** lack of conventional head imaging techniques,for instance,Magnetic Resonance Imaging(MRI)and Computerized Tomography(CT)-scan,has been demonstrated in the paper focusing on the point of failure of these techniques for prompt diagnosis and portable ***,the importance ofMWIhas been addressed elaborately to portray its effectiveness and aptness for a primary tumor *** than that,MTM element designs have been discussed thoroughly based on their performances towards the contributions to the better image resolution of MWI with detailed *** paper proposes the novel design of a Zeroindex Split RingResonator(SRR)MTMelement superstrate with a UWB antenna implemented in MWI systems for detecting *** novel design of the MTM enables the realization of a high gain of a superstrate UWB antenna with the highest gain of 5.70 *** that,the MTM imitates the conduct of the zeroreflection phase on the resonance frequency,which does not *** antenna with an MTM unit is of a 7×4 and 10×5 Zero-index SRR MTM element that acts as a superstrate plane to the *** from that,Rogers(RT5880)substrate material is employed to fabricate the designed MTM unit cell,with the following characteristics:0.51mm thickness,the loss tangent of 0.02,as well as the relative permittivity of 2.2,with Computer Simulation Technology(CST)performing the simulation and *** MTM unit cells of 7×4 and 10×5 attained 0°with respect to the reflection phase at the 2.70 GHz frequency *** first design,MTM Antenna Design 1,c

关键词： Zero-index metamaterial(ZIM) ultra-wideband(UWB) microwave imaging(MWI)detection

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Progress in rubella control initiated through measles elimination strategies:the Malaysian experience

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Asian Pacific Journal of Tropical Medicine 2009年第6期2卷 28-32页

作者： Saraswathy TS Az-Ulhusna A Nor Zahrin H Nurhasmimi Hassan Zainah S rohani J Institute for Medical Research Jalan Pahang50588 Kuala Lumpur Surveillance Unit Disease Control DivisionMinistry of HealthMalaysia National Public Health Laboratory Sg BulohSelangor

Objective:To analyse the laboratory surveillance data from 2004 till 2008 to examine the changing trend of rubella cases in ***:Samples for this study were either received through the measles case based surveillance program or were hospital cases received for sero-diagnosis of congenital rubella syndrome(CRS). Specific rubella IgM antibody test was carried out on all samples that were negative for measles IgM antibody and for sero-diagnosis of ***:Through the surveillance program for measles,the samples received for rubella had increased five fold from 365 in 2004 to 1 522 in *** rubella cases detected had also increased from 4.1%in 2004 to 33.2%in *** age group 11 to 20 years accounted for 73.6%of rubella cases confirmed in 2008,with a higher incidence among males than *** rubella IgM was detected in 25 CRS cases during the 6 year period between January 2003 and December ***:The measles elimination program had contributed to significant progress in the control of rubella,with the majority of rubella cases detected through this *** rubella is not notifiable in Malaysia,this integrated measles and rubella surveillance should be ***,to enhance the progress,specific targets should also be established in the national program to eliminate rubella and CRS.

关键词： Rubella Congenital rubella syndrome Mump-measles-rubella(MMR) vaccination Surveillance

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Gelation Mechanism of Erythromycin Ethylsuccinate During Crystallization

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Transactions of Tianjin University 2019年第2期25卷 110-117页

作者： Xiandong Su Zhenguo Gao Ying Bao Miao Guan Sohrab rohani Qiuxiang Yin Hongxun Hao Chuang Xie Jingkang Wang School of Chemical Engineering and Technology Tianjin University Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin) Department of Chemical and Biochemical Engineering Western University

In this paper, the gelation mechanism of erythromycin ethylsuccinate(EES) during crystallization is investigated for the first time. The generated semisolid gel-like phase exhibited a 3D fibrillar network morphology and the typical rheological properties of gels. The fibers inside the gel-like phase were confirmed to be new types of EES solvates using powder X-ray diffraction, thermogravimetric analysis/differential scanning calorimetry, and gas chromatography. The gelation and crystallization regions in EES-1-propanol solid–liquid phase diagram were determined. Analyses of solvent parameters showed that moderate solvent polarity may promote EES gelation. Fourier transform infrared spectra, nuclear magnetic resonance spectra, and scanning electron microscopy analyses indicated that through intermolecular hydrogen bonds, EES and solvent molecules assembled into fibers via crystallographic mismatch branching growth. The fibers intertwined into a 3D network microstructure and formed a gel-like phase, completely immobilizing the solution.

关键词： Gelation Solvate Crystallization Phase diagram Molecular self-assembly

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