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Histogram of the node strength and histogram of the edge weight: two new features for RGB-D person re-identification

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Science China(Information Sciences) 2018年第9期61卷 112-125页

作者： zeynab IMANI Hadi SOLTANIZADEH Electrical and Computer Engineering Faculty Semnan Univercity

Person re-identification is a classical task for any multi-camera surveillance system. Most of the existing researches on re-identification are based on features extracted from RGB images. However,there are many deficiencies in RGB image processing, some of which are requiring a lot of illumination and high computation. In this paper, novel features are proposed for RGB-D person re-identification. First, the complex network approach in texture recognition is modified and its threshold function is changed for using in depth images extracted by RGB-D sensors. Then, two novel measurements named the histogram of the edge weight(HEW) and the histogram of the node strength(HNS) are introduced on complex *** features fit both single-shot and multi-shot person re-identification. In the single-shot case, the HNS is extracted from only one frame while for the multi-shot case it is extracted from both one frame and multi-frames. These proposed measurements are called histogram of the spatial node strength(HSNS)and histogram of the temporal node strength(HTNS) respectively. Subsequently, these measurements are combined with skeleton features using score-level fusion. The method is evaluated using two benchmark databases and the results show that ours outperforms some state-of-the-art methods.

关键词： complex network edge weight graph node strength person re-identification skeleton features

Influence of glycine additive on corrosion and wear performance of electroplated trivalent chromium coating

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International Journal of Minerals,Metallurgy and Materials 2020年第4期27卷 544-554页

作者： Navid Mehdipour Milad Rezaei zeynab Mahidashti Department of Materials and Metallurgical Engineering Amirkabir University of Technology(Tehran Polytechnic)Hafez Ave.P.O.Box 15875-4413TehranIran

The aim of this study is to evaluate the effect of various molar ratios of glycine to chromium salt(Gly:Cr)and different current densities on the corrosion and wear behaviors of Cr(III)electroplated *** morphology and thickness of the coatings were investigated by scanning electron *** wear properties of the coatings were studied using pin on disk and hardness tests,while corrosion behavior of the coatings was identified using linear polarization,small amplitude cyclic voltammetry,and electrochemical impedance spectroscopy *** increasing the glycine concentration,a structure with low crack density was *** all molar ratios,maximum thickness and current efficiency was observed at a current density of 150 mA·cm?*** the electrochemical methods had a consistent result,and maximum corrosion resistance of approximately 16000Ω·cm2 was obtained in the case of Gly:Cr=3:1 and current density of 200 mA·cm?2.

关键词： electrodeposition trivalent chromium glycine corrosion resistance

Statistical mechanics and artificial intelligence to model the thermodynamic properties of pure and mixture of ionic liquids

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Chinese Journal of Chemical Engineering 2016年第12期24卷 1761-1771页

作者： Fakhri Yousefi zeynab Amoozandeh Department of Chemistry Yasouj University

In this paper, the volumetric properties of pure and mixture of ionic liquids are predicted using the developed statistical mechanical equation of state in different temperatures, pressures and mole fractions. The temperature dependent parameters of the equation of state have been calculated using corresponding state correlation based on only the density at 298.15 K as scaling constants. The obtained mean of deviations of modified equation of state for density of all pure ionic liquids for 1662 data points was 0.25%. In addition, the performance of the artificial neural network(ANN) with principle component analysis(PCA) based on back propagation training with28 neurons in hidden layer for predicting of behavior of binary mixtures of ionic liquids was investigated. The AADs of a collection of 568 data points for all binary systems using the EOS and the ANN at various temperatures and mole fractions are 1.03% and 0.68%, respectively. Moreover, the excess molar volume of all binary mixtures is predicted using obtained densities of EOS and ANN, and the results show that these properties have good agreement with literature.

关键词： Ionic liquids Thermodynamic properties Equation of state Artificial neural network

Groutability classification of granular soils with cement grouts

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第6期15卷 1580-1590页

作者： Hadi Farhadian zeynab Maleki Department of Mining Engineering Faculty of EngineeringUniversity of BirjandBirjandIran School of Earth Sciences Damghan UniversityDamghanIran

This research aims to develop a methodology for applying the geostatistical method to generate a groutability classification for granular *** ensure the precision of the suggested technique,a total of 103 data samples were *** the groutability of granular soils has always been difficult because of many soil *** a result,a new two-dimensional graph,the groutability classification of granular soil(GCS)chart,was *** establishment was based on data analysis of the grain size of soil and cement-based grouts(N1 and N2),relative density(Dr)and fines content of the soil(FC),water/cement ratio of grout mixture(w/c),and grouting pressure(P),all of which have a direct impact on the groutability of soil *** geostatistical method was used to develop and compile the GCS graph based on the aforementioned parameters with the use of coefficient S,which is a coefficient of the scoring set of parameters including P,w/c,Dr,and *** validation process was carried out hierarchically,with an additional set of 30 *** proposed method has a prediction accuracy of roughly 96.7%,demonstrating a helpful *** proposed approach can be easily implemented in practical engineering situations because it has a comparable syntax to commonly used *** should be noted that the proposed formula was only tested using the data samples collected,and the applicability of the produced procedure to other situations requires more examination.

关键词： Prediction Groutability Classification Groutability classification of granular soil(GCS)

Comparison the effects of bioaugmentation versus biostimulation on marine microbial community by PCR–DGGE： A mesocosm scale

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Journal of Environmental Sciences 2016年第5期28卷 136-146页

作者： Mehdi Hassanshahian zeynab Bayat Simone Cappello Francesco Smedile Michail Yakimov Department of Biology Faculty of Sciences Shahid Bahonar University of Kerman Kerman Iran Istituto per l'Ambiente Marino Costiero (IAMC)--CNR of Messina Messina Italy

In order to better understand the effects of biostimulation and bioaugmentation processes on a marine microbial community, three different mesocosm experiments were planned. Natural seawater（10.000 L） was artificially polluted with crude oil（1 L） and（1） inorganic nutrients（Biostimulating Mesocosm, BM）,（2） inorganic nutrients and an inoculum of Alcanivorax borkumensis SK2（Single Bioaugmentation Mesocosm, SBM）,（3） inorganic nutrients and inoculums of A. borkumensis SK2 and Thalassolituus oleivorans MIL-1（Consortium Bioaugmentation Mesocosm, CBM）. During the experimental period（20 days）, samples were taken from each mesocosm and the community structure was analyzed by PCR–DGGE. The 16 S r RNA gene DGGE banding patterns and sequence analysis demonstrated that biostimulation had the lowest effect on microbial biodiversity in the mesocosms; however, the biodiversity of the marine microbial community dramatically decreased in the CBM（Shannon index was 0.6 in T3）. The community structures among the three mesocosms were also markedly different,and major bacteria derived from DGGE bands were related to uncultured Gamma Proteobacteria. The biodegradation results show that the Single Bioaugmentation Mesocosm（SBM） system had the highest percentage of degradation（95%） in comparison to the BM mesocosm（80%） and CBM（70%）.

关键词： Alcanivorax Crude oil DGGE Marine environment Mesocosm

Effects of Increased Salinity on Growth, Development and Survival in Early Life Stages of the Green Toad Bufotes variabilis (Anura: Bufonidae)

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Asian Herpetological Research 2018年第2期9卷 129-134页

作者： Soheyla YAGHOBI Somaye VAISSI zeynab Taheri KHAS Mozafar SHARIFI Razi University Centre for Environmental Studies Department of Biology

This study examined the effects of increased salinity on growth, development and survival of the Green toad, Bufotes variabilis during embryonic, hatching and early larval periods. Eggs from a single cohort of B. variabilis were subjected to acute and chronic toxicity tests for water salinity ranging from 0.20 to 10 g of salt per liter. Results obtained from this study showed that salinity over 3.70 g/l increased embryonic mortality and reduced percentage of hatching and survival rate of larvae. As larvae tolerated salinity 0.20 to 3.70 g/l with highest survival, but salinity of 10 g/l caused mortality of all individuals within 12 h, 7.70-8.70 （g/l） within 4.5 days, 5.70-6.70 g/l within 10 days and 4.70 （g/l） were tolerated within 14 days. Salinity less than 0.70 g/l did not affect survival and hatching success of the embryos. After a 3-week experiment, size of larvae exposed to salinities over 0.70 g/l was lower compared to larvae reared at lower salinity levels. Meanwhile increases in salinity more than 3.70 g/l caused extension in the hatching period. Larvae reared at salinity of 3.70 to 4.70 g/l had morphological abnormalities, such as distortion of tail.

关键词： acute toxicity Bufotes variabilis hatching rate road salt salinization survival

Biodegradation of natural and synthetic estrogens in moving bed bioreactor

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Chinese Journal of Chemical Engineering 2018年第2期26卷 393-399页

作者： Mohammad Mehdi Amin Bijan Bina Karim Ebrahim zeynab Yavari Farzaneh Mohammadi Environment Research Center Research Institute for Primordial Prevention of Non-communicable Disease Isfahan University of Medical Sciences Department of Environmental Health Engineering School of Health Isfahan University of Medical Sciences Student Research Committee Isfahan University of Medical Sciences

Estrogen hormones as a group of endocrine disruptive compounds （EDC） can interfere with endocrine system in humans and animals. The goal of this study was to investigate the elimination rate of Estrone （El）, 17β-estradiol （E2） and 17α-ethinyl estradiol （EE2） in Moving Bed Bioreactor （MBBR）. These analytes extracted by Dispersive Liquid-Liquid Microextraction （DLLME） technique, followed by derivatization, and detected by GC/MS. Estrogen removal efficiency in MBBR improved at high solid retention times （SRTs）, which notion is owing to development ofnitrification. Estrogenspecificremovalratewasbetween 0,22-1.45μg.（gVSS） 1.d -1 for natural and synthetic hormones. The adsorption rate was 0.9%-3.2% 0-1.3%, and 0.7%-5.7% for E1, E2, and EE2, respectively. In addition, the biodegradation rates were more than 95% for these compounds. These results illustrated that in MBBR, the hiodegradation and the adsorption to biomass are considered as two significant routes for elimination of estrogenic compounds. As a whole, the deterioration rate of estrogens enhanced by MBBR compared to other biological wastewater treatment processes such as conventional activated sludge.

关键词： Estrogen hormones Adsorption Biodegradation Nitrification

The occurrence,fate,and distribution of natural and synthetic hormones in different types of wastewater treatment plants in Iran

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1132-1139页

作者： Mohammad Mehdi Amin Bijan Bina Afshin Ebrahimi zeynab Yavari Farzaneh Mohammadi Somayeh Rahimi Environment Research Center Research Institute for Primordial Prevention of Non-communicable Disease Isfahan University of Medical Sciences Department of Environmental Health Engineering School of Health Isfahan University of Medical Sciences Student Research Committee Isfahan University of Medical Sciences

Over the past few years, the presence of steroid estrogens in the environment has become a major concern. In this study, the concentrations of estrone （El）, 17β-estradinl （E2）, and 17α-ethinyl estradiol （EE2） were measured in some wastewater treatment plants （WWTPs） in lran. These samples were collected from the municipal, rural, livestock, commercial, and hospital WWTPs, extracted by dispersive liquid-liquid micro extraction （DLLME） technique, derivatized, and detected by GC/MS. In these treatment plants, various processes including conven- tional activated sludge （CAS）, aerated lagoon （AL）, moving bed biofilm reactor （MBBR）, and activated sludge with wetland （AS ＋ WL） are used. The highest concentration of hormones was observed in the influents and effluents of livestock, municipal, commercial, and hospital WWTPs, respectively. The maximum elimination rate was obtained in MBBR followed by AS ＋ WL CAS and AL The biodegradation and adsorption rates along with adsorption coefficients of 1g kd and 1g koc were measured for all target compounds.

关键词： Influent Effluent Estrogen Wastewater Biodegradation

Determination of 4-nonylphenol and 4-tert-octylphenol compounds in various types of wastewater and their removal rates in different treatment processes in nine wastewater treatment plants of Iran

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Chinese Journal of Chemical Engineering 2018年第1期26卷 183-190页

作者： Bijan Bina Farzaneh Mohammadi Mohammad Mehdi Amin Hamid Reza Pourzamani zeynab Yavari Environment Research Center School of HealthIsfahan University of Medical Sciences Student Research Center School of HealthIsfahan University of Medical Sciences

Alkylphenols(APs), considered as xenoestrogenic compounds, mainly exist as 4-nonylphenol(4-NP) and 4-tertoctylphenol(4-t-OP) in environments. The high stability and accumulation of APs in aquatic systems have caused endocrine disruption. In this study we measured APs in the wastewater influent and effluent samples, from the urban, rural, livestock, commercial and hospital wastewater treatment plants(WWTPs) in Iran. Dispersive liquid–liquid microextraction(DLLME) combined with gas chromatography–mass spectrometry(GC–MS) was used for the extraction and determination of 4-NP and 4-t-OP. In these treatment plants, various processes such as activated sludge, aerated lagoon, moving bed biofilm reactor and activated sludge along with wetland were applied. The highest concentration of 4-NP and 4-t-OP was observed in commercial and livestock sewages. The activated sludge along with wetland and then the MBBR process showed the highest removal rates of pollutants. The rates of biodegradability and accumulation in sludge were determined and also the specific adsorption coefficient Kdand the organic carbon–water partition coefficient kOCof the sludge for APs were calculated.

关键词： Alkylphenols DLLME Full scale WWTP Biodegradation Adsorption