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Forced Vibration Analysis of Functionally Graded Anisotropic Nanoplates Resting on Winkler/Pasternak-Foundation

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Computers, Materials & Continua 2020年第2期62卷 607-629页

作者： Behrouz karami Maziar Janghorban Timon Rabczuk Department of Mechanical Engineering Marvdasht BranchIslamic Azad UniversityMarvdashtIran Institute of Research and Development Duy Tan UniversityDa NangViet Nam

This study investigates the forced vibration of functionally graded hexagonal nano-size plates for the first time.A quasi-three-dimensional(3D)plate theory including stretching effect is used to model the anisotropic plate as a continuum one where small-scale effects are considered based on nonlocal strain gradient ***,the plate is assumed on a Pasternak foundation in which normal and transverse shear loads are taken into *** governing equations of motion are obtained via the Hamiltonian principles which are solved using analytical based methods by means of Navier’s *** influences of the exponential factor,nonlocal parameter,strain gradient parameter,Pasternak foundation coefficients,length-to-thickness,and length-to-width ratios on the dynamic response of the nanoplates are *** addition,the accuracy of an isotropic approximate instead of the anisotropic model is *** dynamic behavior of the system shows that mechanical mathematics-based models may get better results considering the anisotropic model because the dynamic response can cause prominent differences(up to 17%)between isotropic approximation and anisotropic model.

关键词： Functionally graded materials dynamic deflection nonlocal train gradient theory Winkler-Pasternak elastic foundation

Velocity Curve Analysis of Spectroscopic Binary Stars AI Phe,GM Dra,HD 93917 and V502 Oph by Nonlinear Regression

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Chinese Journal of Astronomy and Astrophysics 2007年第4期7卷 558-564页

作者： K. karami R. Mohebi Department of Physics University of KurdistanPasdaran St.P. O. Box 66177-15175Sanandaj Iran Research Institute for Astronomy & Astrophysics of Maragha (RIAAM)P. O. Box 55134-441MaraghaIran Institute for Advanced Studies in Basic Sciences(IASBS)Gava ZangP. O. Box 45195-1159Zanjan Iran Institute for Advanced Studies in Basic Sciences(IASBS) Gava ZangP. O. Box 45195-1159Zanjan Iran

We introduce a new method to derive the orbital parameters of spectroscopic binary stars by nonlinear least squares of （o - c）. Using the measured radial velocity data of the four double lined spectroscopic binary systems, AI Phe, GM Dra, HD 93917 and V502 Oph, we derived both the orbital and combined spectroscopic elements of these systems. Our numerical results are in good agreement with the those obtained using the method of Lehmann-Filhés.

关键词： stars: binaries: eclipsing - stars: binaries: spectroscopic

Influence of N^+implantation on structure,morphology,and corrosion behavior of Al in NaCl solution

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Chinese Physics B 2020年第5期29卷 516-524页

作者： Hadi Savaloni Rezvan karami Helma Sadat Bahari Fateme Abdi School of Physics College of ScienceUniversity of TehranTehranIran

Structural and morphological changes as well as corrosion behavior of N+implanted Al in 0.6 M NaCl solution as function of N+fluence are *** x-ray diffraction results confirmed AlN *** atomic force microscope(AFM)images showed larger grains on the surface of Al with increasing N+*** can be due to the increased number of impacts of N+with Al atoms and energy conversion to heat,which increases the diffusion rate of the incident ions in the ***,the number of the grain boundaries is reduced,resulting in corrosion resistance *** impedance spectroscopy(EIS)and polarization results showed the increase of corrosion resistance of Al with increasing N+*** data was used to simulate equivalent electric circuits(EC)for the *** dependence of the surface morphology on the EC elements was *** scanning electron microscope(SEM)analysis of the samples after corrosion test also showed that the surfaces of the implanted Al samples remain more intact relative to the untreated Al sample,consistent with the EIS and polarization results.

关键词： aluminium ion implantation surface morphology corrosion electrochemical impedance spectroscopy polarization

Biosensors: Types, features, and application in biomedicine

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Asian Pacific Journal of Tropical Biomedicine 2022年第9期12卷 367-373页

作者： Elmira karami Fatemeh Kazemi-Lomedasht Biotechnology Research Center Biotechnology DepartmentPasteur Institute of IranTehranIran

Fast and precise diagnostic techniques are required for the treatment of many *** are one of the diagnostic devices that are applicable in biological and medical *** could be utilized to recognize biological molecules with high *** are consisted of different components and have different *** type of biosensor is used in a particular field according to its specific *** are a novel class of antibodies with small size,high affinity,and specificity to their *** unique properties of nanobodies make them appropriate tools for diagnostic *** this paper,we review biosensors,and their features and roles in ***/nanobody-based biosensors are also specifically discussed.

关键词： Biosensor Nanobody-based biosensor Antibodybased biosensor Biomedicine Biotechnology

Landscape structure and suitable habitat analysis for effective restoration planning in semi-arid mountain forests

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Ecological Processes 2021年第1期10卷 237-249页

作者： Hossein Piri Sahragard Majid Ajorlo Peyman karami Department of Rangeland and Watershed Management Faculty of Soil and WaterUniversity of ZabolZabol 98617Iran Department of Environmental Sciences Faculty of Natural Resources and Environment SciencesMalayer UniversityMalayer 95863-657Iran.

Background:Suitable habitat and landscape structure play a pivotal role in the success of forest restoration *** study aimed to model the habitat suitability of wild almond(Amygdalus scoparia Spach)using three individual species distribution models(SDMs),i.e.,backpropagation artificial neural network(BP-ANN),maximum entropy(MaxEnt),generalized linear model(GLM),as well as the ensemble technique along with measuring the landscape metrics and analyzing the relationship between the distribution of the suitable habitat of the species in different landform classes in Fars Province,southern ***:There was no clear difference in the prediction performance of the *** BP-ANN had the highest accuracy(AUC=0.935 and k=0.757)in modeling habitat suitability of ***,followed by the ensemble technique,GLM,and MaxEnt models with the AUC values of 0.890,0.887,and 0.777,*** highest discrimination capacity was associated to the BP-ANN model,and the highest reliability was related to the ensemble ***,evaluation of variable importance showed that the occurrence of *** was strongly dependent on climatic variables,particularly isothermality(Bio 3),temperature seasonality(Bio 4),and precipitation of driest quarter(Bio 17).Analysis of the distribution of species habitat in different landform classes revealed that the canyon,mountain top,upland drainage,and hills in valley classes had the highest suitability for the species ***:Considering the importance of landform in the establishment of plant habitats,the combination of the outputs of the SDMs,landform,and the use of landscape metrics could provide both a clear view of habitat conditions and the possibility of analyzing habitat patches and their relationships that can be very useful in managing the remaining forests in semi-arid *** canyon,mountain top,and upland drainage classes were found to be the most important landforms to provide the highe

关键词： Amygdalus scoparia DOMAIN presence-only model Ensemble technique Individual distribution models Landscape metrics Pseudo-absence points

Pediatric palliative care for children with cancer:a concept analysis using Rodgers’evolutionary approach

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World Journal of Pediatrics 2022年第12期18卷 791-803页

作者： Parvaneh Vasli Maryam karami Hanieh AsadiParvar-Masouleh Department of Community Health Nursing School of Nursing and MidwiferyShahid Beheshti University of Medical SciencesVali Asr Ave.Ayatollah Hashemi Rafsanjani Cross RoadTehranIran School of Nursing&Midwifery Shahid Beheshti University of Medical SciencesTehranIran Faculty of Literature and Human Sciences Shahid Beheshti UniversityTehranIran

Background Providing access to pediatric palliative care(PPC)for children living with a serious illness,such as cancer,is of critical importance,although this specialized intervention,as a novel concept,still seems vague and *** present study analyzed the concept of PPC for children with *** Rodgers'evolutionary method was employed for the concept *** on PPC,particularly those for children suffering from cancer,published between 2010 and 2021 were searched in valid academic research *** inclusion criteria for the full-text articles were based on the characteristics,antecedents,and consequences of PPC for children with *** In total,19 relevant articles were selected and then reviewed and analyzed after applying the inclusion criteria and the final *** analysis of the concept of PPC for children affected with cancer revealed four characteristics,including"PPC as holistic and integrated care","PPC as patient-and family-centered care","PPC as early-start continuous care",and"PPC as interdisciplinary and team-based care".Some effective factors could also act as antecedents for this concept,i.e.,health care providers'training and expertise as well as human resources and ***,improved quality of life,symptom reduction,and coordination between patient care and family support were among the PPC consequences for such *** The study results demonstrated that delivering PPC to children with cancer demanded a comprehensive view of its various ***,numerous factors need to be delineated for its accurate and complete implementation.

关键词： Cancer Children Palliative care Survivor

A Rapid Access to Novel and Known Benzimidazole Derivatives Using Silica Chloride as a Reusable Catalyst

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Chinese Journal of Chemistry 2012年第4期30卷 959-964页

作者： karami, Bahador Ghashghaee, Vahideh Khodabakhshi, Saeed Department of Chemistry Yasouj University Yasouj Zip Code: 75918-74831 P. O.Box 353 Iran Department of Chemistry Gachsaran Branch Islamic Azad University Gachsaran Iran

A new application of silica chloride as an easily available and reusable solid acid catalyst for the synthesis of benzimidazole and its derivatives through the condensation of o-phenylenediamines and orthoesters under thermal and solvent-free conditions is described. This novel and eco-friendly method is very cheap and has many advan- tages including excellent yields, short reaction time, and simple work-up procedure.

关键词： silica chloride orthoesters o-phenylenediamine benzimidazole

Evaluation of the stability of terraced slopes in clayey gravel soil using a novel numerical technique

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Frontiers of Structural and Civil Engineering 2023年第5期17卷 796-811页

作者： Mehrdad karami Mohammad NAZARI-SHARABIAN James BRISTOW Moses KARAKOUZIAN Department of Civil and Environmental Engineering and Construction University of NevadaLas VegasLas VegasNV 89154USA Department of Mathematics Engineeringand Computer ScienceWest Virginia State UniversityInstituteWV 25112USA R&D Department Universal Engineering SciencesLas VegasNV 89118USA

Conventional geotechnical software limits the use of the strength reduction method(SRM)based on the Mohr–Coulomb failure criterion to analyze the slope safety factor(SF).The use of this constitutive model is impractical for predicting the behavior of all soil *** the present study,an innovative numerical technique based on SRM was developed to determine SF using the finite element method and considering the extended Cam–clay constitutive model for clayey gravel soil as opposed to the Mohr–Coulomb *** this regard,a novel user subroutine code was employed in ABAQUS to reduce the stabilizing forces to determine the failure surfaces and resist and drive shear stresses on a *** validating the proposed technique,it was employed to investigate the performance of terraced slopes in the context of a case *** impacts of geometric parameters and different water table elevations on the SF were *** results indicated that an increase in the upper and lower slope heights led to a decrease in SF,and a slight increase in the horizontal offset led to an increase in the ***,when the water table elevation was lower than the toe of the terraced slope,the SF increased because of the increase in the uplift force as a resistant component.

关键词： terraced slope safety factor finite element method ABAQUS extended Camclay

Improved microwave-assisted catalyst-free synthesis of9-aryl-5,9-dihydropyrimido[4,5-d][1,2,4]triazolo[1,5-a]pyrimidine-6,8(4H,7H)-dione derivatives

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Chinese Chemical Letters 2015年第9期26卷 1065-1067页

作者： Mahnaz Farahi Bahador karami Zohreh Banaki Department of Chemistry Yasouj University

Agreen regioselective synthesis of some new and known 9-aryl-5,9-dihydropyrimido[4,5-d][l,2,4]triazolo[1,5-a]pyrimidine-6,8（4H,7H）-diones has been described via the microwave-assisted one-pot reaction of 3-amino-1H-1,2,4-triazoles,aromatic aldehydes and barbituric acids under solvent- and catalyst-free *** operationally simple procedure is less laborious and provides a better scope than previously reported procedures.

关键词： 9-Aryl-5 9-dihydropyrimido[4 5-d] [ 1 2 4]triazolo[1 5-a]pyrimidine- 6 8(4H 7H)-diones Barbituric acids 3-Amino- 1 H- 1 2 4-triazoles Aryl aldehydes Microwave-assisted synthesis