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Anti-Spoof Reliable Biometry of Fingerprints Using <i>En-Face</i>Optical Coherence Tomography

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Optics and Photonics Journal 2011年第3期1卷 91-96页

作者： mohammad-reza nasiri-avanaki Alexander Meadway Adrian Bradu Rohollah Mazrae Khoshki Ali Hojjatoleslami Adrian Gh. Podoleanu 不详

Optical coherence tomography (OCT) is a relatively new imaging technology which can produce high resolution images of three-dimensional structures. OCT has been mainly used for medical applications such as for ophthalmology and dermatology. In this study we demonstrate its capability in providing much more reliable biometry identification of fingerprints than conventional methods. We prove that OCT can serve secure control of genuine fingerprints as it can detect if extra layers are placed above the finger. This can prevent with a high probability, intruders to a secure area trying to foul standard systems based on imaging the finger surface. En-Face OCT method is employed and recommended for its capability of providing not only the axial succession of layers in depth, but the en-face image that allows the traditional pattern identification. Another reason for using such OCT technology is that it is compatible with dynamic focus and therefore can provide enhanced transversal resolution and sensitivity. Two En-Face OCT systems are used to evaluate the need for high resolution and conclusions are drawn in terms of the most potential commercial route to ex- ploitation.

关键词： Optical Coherence Tomography En-Face OCT Fingerprints Biometry High Resolution

A comparative study of optimization algorithms for wavefront shaping

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Journal of Innovative Optical Health Sciences 2019年第4期12卷 74-82页

作者： Zahra Fayyaz Nafiseh mohammadian M.reza Rahimi Tabar Rayyan Manwar Kamran(mohammad)avanaki Department of Physics Sharif University of Technology Tehran 11365-9161 Iran Biomedical Engineering Department Wayne State University DetroitMI 48201USA Department of Dermatology Wayne State University School of Medicine DetroitMI 48202USA Barbara Ann Karmanos Cancer Institute Detroit MI 48202USA

By manipulating the phase map of a wavefront of light using a spatial light modulator,the scattered light can be sharply focused on a specific *** iterative optimization algo-rithrns for obtaining the optimumn phase map have been ***,there has not been a comparative study on the performance of these *** this paper,six optimization algorithms for wavefront shaping inchuding continuous sequential,partitioning algorithm,transmission matrix estimation method,particle swarm optimization,genetic algorithm(GA),and simulated annealing(SA)are discussed and compared based on their efficiency when introduced with various measurement noise levels.

关键词： Wave front shaping algorithms optimization turbid media wavefront shaping

Land use change modeling through an integrated Multi-Layer Perceptron Neural Network and Markov Chain analysis(case study: Arasbaran region, Iran)

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Journal of Forestry Research 2019年第3期30卷 943-957页

作者： Vahid nasiri Ali.A.Darvishsefat reza Rafiee Anoushirvan Shirvany mohammad Avatefi Hemat Department of Forestry Faculty of Natural Resources University of TehranKarajIran Department of Environmental Science Faculty of Natural ResourcesUniversity of TehranKarajIran

Temporal land use/land cover (LULC) change information provides a variety of applications for informed management of land resources. The aim of this study was to detect and predict LULC changes in the Arasbaran region using an integrated Multi-Layer Perceptron Neural Network and Markov Chain analysis. At the first step, multi-temporal Landsat images (1990, 2002 and 2014) were processed using ancillary data and were classified into seven LULC categories of high density forest, low-density forest, agriculture, grassland, barren land, water and urban area. Next, LULC changes were detected for three time profiles, 1990–2002, 2002–2014 and 1990–2014. A 2014 LULC map of the study area was further simulated (for model performance evaluation) applying 1990 and 2002 map layers. In addition, a collection of spatial variables was also used for modeling LULC change processes as driving forces. The actual and simulated 2014 LULC change maps were cross-tabulated and compared to ensure model simulation success and the results indicated an overall accuracy and kappa coefficient of 97.79% and 0.992, respectively. Having the model properly validated, LULC change was predicted up to the year 2025. The results demonstrated that 992 and 1592 ha of high and lowdensity forests were degraded during 1990–2014,respectively, while 422 ha were added to the extent of residential areas with a growth rate of 17.58 ha per year. The developed model predicted a considerable degradation trend for the forest categories through 2025, accounting for 489 and 531 ha of loss for high and low-density forests, respectively. By way of contrast, residential area and farmland categories will increase up to 211 and 427 ha, respectively. The integrated prediction model and customary area data can be used for practical management efforts by simulating vegetation dynamics and future LULC change trajectories.

关键词： Satellite images Land use changes Land change modeler Artificial neural network Prediction

Comparative study of adsorptive role of carbonaceous materials in removal of UV-active impurities of paclitaxel extracts

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Journal of Pharmaceutical Analysis 2015年第6期5卷 396-399页

作者： Jaber nasiri Elaheh Motamedi mohammad reza Naghavi Department of Agronomy and Plant Breeding Division of Molecular Plant Genetics College of Agricultural & Natural Resources University of Tehran

Graphite oxide （GO） and reduced graphene oxide （rGO） nanosheets were synthesized with a low-cost manufacturing method. The morphology and structures of the synthesized samples were studied using X-ray diffraction （XRD）, atomic force microscopy （AFM）, Fourier-transform infrared （FTIR） and Raman spectroscopy. The efficiencies of GO and rGO as novel candidate adsorbents in the pre-purification of paclitaxel were compared and contrasted with those of commercial graphite （Gt）, graphene （G） and multi-wall carbon nanotube （MWCNT）. According to UV-vis and HPLC analyses, rGO was evaluated as the best absorbent for the removal of impurities in pre-purification of paclitaxel from plant cell cultures. In contrast, the GO had the poorest proficiency for paclitaxel pre-purification in comparison with the other carbonaceous adsorbents. This is attributed to the existence of many localized defects in the π-π structure of GO that is related to weakness of π-π stacking interactions between crude extract impurities and GO.

关键词： PaclitaxelReduced graphene oxideGraphite oxidePurificationCarbon nanotube

Elevated serum nitric oxide and hydrogen peroxide levels as potential valuable predictors of herpes zoster

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Asian Pacific Journal of Tropical Medicine 2018年第6期11卷 381-386页

作者： Soheila nasiri Mehdi Hedayati Seyed mohammad Riahi reza M Robati Marjan Khazan Skin Research Center Shahid Beheshti University of Medical SciencesTehranIran Cellular and Molecular Endocrine Research Center Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran Department of Public Health Faculty of HealthBirjand University of Medical SciencesBirjand Department of Epidemiology School of HealthShahid Beheshti University of Medical SciencesTehranIran

Objective:To evaluate the biomarkers of oxidative stress in herpes zoster patients compared with control ***:This study compared the nitric oxide(NO),hydrogen peroxide(H2 O2),malon dialdehyde,uric acid,and bilirubin levels between 43 herpes zoster patients and 47 age-matched control *** area under the curve of the receiver operating characteristic curve was performed to evaluate the final logistic regression ***:The significant differences were observed in the serum levels of NO,H2 O2,and malondialdehyde between the case and the control groups(P<0.001).However,no statistical differences were found in both uricacid and bilirubin levels between the ***,the raised oxidant biomarkers were strongly associated with increased disease severity(P<0.001).Multiple logistic regression analysis with the highest area under the curve[0.98(95%CI 0.95-1.00)]and the minimum number of variables showed that high levels of NO(OR 1.24;95%CI 1.06-1.46;P=0.008)and H2 O2(OR 1.25;95%CI 1.09-1.43;P=0.001)were associated with herpes ***:High levels of NO and H2 O2 were observed in patients with herpes *** NO and H2 O2 levels might be associated with herpes zoster,which needs to be confirmed by further studies.

关键词： Herpes zoster Oxidative stress Malondialdehyde Nitric oxide Hydrogen peroxide

Characterization of single-crystal fluorapatite nanoparticles synthesized via mechanochemical method

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Particuology 2011年第5期9卷 537-544页

作者： reza Ebrahimi-Kahrizsangi Bahman nasiri-Tabrizi Akbar Cham Materials Engineering Department Najafabad Branch Islamic Azad University

The synthesis of nanostructured fiuorapatite （FA; Calo（PO4）6F2） was explored from the starting materials of CaHPO4, Ca（OH）2, CaO, P205 and CaF2 via a mechanochemical process. In this research, the suitability of using the mechanochemical process to prepare a high crystalline phase of FA was studied. The characterization and structural features of the synthesized powders were evaluated using powder X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FT-IR）, energy dispersive X-ray spectroscopy （EDX）, scanning electron microscopy （SEM）, and transmission electron microscopy （TEM） techniques. The results from the structural studies indicate that the maximum lattice disturbance in the apatite structure after the mechanochemical process was at the （0 0 2） plane. Furthermore, the maximum particle size was below the crystallite size after 60 h of milling and subsequent thermal treatment at 600 ℃ for 1 h （heated up to 600 ℃ and kept for 1 h at this temperature）. We determined that this method gives rise to the single-crystal FA with an average size in the range of 25 ± 5 to 29 ± 9 rim. The present findings suggest that the solid-state reaction and appropriate thermal process simultaneously lead to the formation of nanostructured FA with spheroidal shape.

关键词： Fluorapatite Single-crystal Nanoparticles Mechanochemical Crystallinity

Stabilizing silica nanoparticles in high saline water by using polyvinylpyrrolidone for reduction of asphaltene precipitation damage under dynamic condition

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Chinese Journal of Chemical Engineering 2019年第5期27卷 1021-1029页

作者： mohammad reza Aghajanzadeh mohammad Sharifi Department of Petroleum Engineering Amirkabir University of Technology

In this study, the performance of stable nanofluid containing SiO2 nanoparticles dispersed and stabilized in high salinity brine for asphaltene inhibition in dynamic condition is evaluated. In the first stage of this work, the stability of silica nanoparticles in different range of water salinity(0–100000 mg·L-1) is investigated. Next, stable nanofluid containing highest salinity is selected as asphaltene inhibitor agent to inject into the damaged core sample. The estimated values of oil recovery for base case, after damage process and after inhibition of asphaltene precipitation using nanofluid are 51.6%, 36.1% and 46.7%, respectively. The results showed the reduction in core damage after using nanofluid. In addition, the relative permeability curves are plotted for the base case, after damage process and also after inhibition of asphaltene precipitation using nanofluid. Comparison of relative permeability curves shows, relative permeability of oil phase decreased after damage process as compared with the base case. But after using nanofluid the oil relative permeability curve has shifted to the right and effective permeability of oil phase has been improved.

关键词： Formation damage Enhanced oil recovery Salinity Asphaltene Core flooding Nano particles

Experimental investigation of different brines imbibition influences on co-and counter-current oil flows in carbonate reservoirs

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Chinese Journal of Chemical Engineering 2021年第5期34卷 17-29页

作者： Pouyan Ahmadi mohammad reza Aghajanzadeh Masoud Riazi mohammad reza Malayeri mohammad Sharifi Enhanced Oil Recovery(EOR)Research Centre IOR/EOR Research InstituteShiraz UniversityShirazIran Helmholtz Centre for Environmental Research-UFZ LeipzigGermany Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Institut für Verfahrenstechnik und Umwelttechnik Technische Universität DresdenGermany

Imbibition of water,as wetting phase in oil-wet fractured carbonate reservoirs,plays a key role in fluid flow between matrix and fracture *** type of injected seawater and its chemistry would profoundly influence the imbibition *** this study,the impact of smart water(a brine that its ions have been adjusted to facilitate oil recovery)and low salinity water on co-and counter-current imbibition processes for oil-wet carbonate cores has been experimentally *** results show an increase of about 10% in oil recovery for co-and counter-currents for smart seawater imbibition compared to that of low salinity *** addition,as a result of the influence of co-and counter-current on each other,by co-current removal from one core face,the countercurrent in the other face would be intensified by as much as about 75%.A close examination of different lengths(5,7 and 9 cm)of carbonate cores with the same permeability revealed that by decreasing porous medium length,the amount of counter-current producing oil would be decreased so that in the 5 cm core,counter current oil production will not *** similar core lengths by increasing permeability,the share of counter current flow would be decreased approximately 18% since the capillary pressure could not overcome non-wetting phase viscous *** the role of matrix length along with a modified brine(which is designed according to the matrix mixture)strengthen the relevant mechanisms to have more oil production so that the higher thickness of matrix causes the higher amount of co-current oil producing and consequently more total recovery.

关键词： Smart water Co-current Counter current Wettability alteration Oil recovery

Stochastic price based coordinated operation planning of energy storage system and conventional power plant

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Journal of Modern Power Systems and Clean Energy 2019年第5期7卷 1020-1032页

作者： mohammad reza SHEIBANI Gholam reza YOUSEFI mohammad Amin LATIFY Department of Electrical and Computer Engineering Isfahan University of TechnologyIsfahan 84156-83111Iran

A generation company(GENCO)which has a conventional power plant(CPP)intends to add an energy storage system(ESS)beside the CPP to increase its flexibility and *** this purpose,a new model is proposed for coordinated operation planning of the CPP and ESS in energy and spinning reserve markets in the presence of a bilateral *** proposed model is based on the stochastic price based unit commitment(PBUC)and price based storage commitment(PBSC).The uncertainties of the energy and spinning reserve prices and delivery requests in the spinning reserve market are modeled via scenarios based upon historical *** proposed model maximizes the profitability of the ESS beside the CPP and encourages the GENCO to invest the *** technology options to use beside the CPP are determined by economic *** results show that utilization of ESSs improves the technical operation of CPPs,as well as GENCOs’profitability.

关键词： Energy storage system Conventional power plant Operation planning Price based unit commitment