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Esmaeili F.,Institute of Higher Education | Kahrizi D.,Razi University | Mansouri M.,Kermanshah University of Medical Sciences | Mansouri M.,Kermanshah University of Technology | And 5 more authors.
Journal of Reports in Pharmaceutical Sciences | Year: 2016

Stevia is a natural and non-caloric sweetener which most used in food and drug industries. In the present study, we focused on optimization of cell dedifferentiation and callus induction in stevia. In order to evaluation of growth regulators and explant types effects on callus induction, a factorial experiment was carried out in two factors and based on completely randomized design in four replications. The factor A included different levels of benzene adenin in three levels (0.0, 0.5 and 1.0 mg/l), Naphthalene acetic acid in four levels (0.0, 0.5, 1 and 2 mg/l), 2-4-D in three levels (0, 1 and 2 mg/l). The factor B comprised two levels of explant (leaf and stem) that were evaluated. The experiment was performed on Tissue Culture Lab in Kermanshah Industrial University. Analysis of variance for data results showed that there were significant differences among levels of plant explants for callus induction (P<0.05). However differences among above levels were not significant for callus growth rate. There were significant differences among plant growth regulators levels for callus induction and callus growth rate (P<0.01). Interaction effects were not significant for above two traits. Means comparison for plant growth regulators via Duncan's test (p<0.5) showed that medium plants supplemented with N0.5B0.5 was the best medium for callus induction (97.5%). The medium included N1B1 showed the highest callus growth rate (0.1 mm/day). In conclusion, we described a role of plant growth regulators and explant types on callus induction in stevia. © 2016 by Kermanshah University of Medical Sciences.


Zabihollah Y.,Mazandaran University of Medical Sciences | Ahmad T.,Tarbiat Modares University | Kamran N.,Islamic Azad University at Qaemshahr | Younes Y.,Institute of Higher Education | Aliakbar Y.,Depatment of Environment
Life Science Journal | Year: 2013

In the research, multivariate statistical techniques, such as cluster analysis (CA), principal component analysis (PCA) and factor analysis (FA) were used to identify characteristics of water quality and to assess spatial and seasonal variations of water quality in Tajan River Basin. Water quality data collected from ten sampling stations in river during Six years were analyzed for 14 parameters. Cluster analysis grouped stations into three clusters and the characteristic of clusters was agreed to the spatial pattern human activities in the Tajan river basin. In this investigation, cluster three (station 10) matches to highly polluted sites. The principal component analysis/factor analysis helped to extract and recognize the factors or origins responsible for water quality variations in four seasons. The temperature (natural parameter), BOD5, COD, FC, NO3-and PO4 (anthropogenic activities) were the most significant parameters contributing to water quality variations for all seasons.


Bozorgpour F.,Amirkabir University of Technology | Ramandi H.F.,Institute of higher education | Jafari P.,University of Houston | Samadi S.,Isfahan University of Technology | And 2 more authors.
International Journal of Biological Macromolecules | Year: 2016

In the present study the chitosan/Al2O3/Fe3O4 composite nanofibrous adsorbent was prepared by electrospinning process and its application for the removal of nitrate and phosphate were compared with chitosan/Al2O3/Fe3O4 composite bead adsorbent. The influence of Al2O3/Fe3O4 composite content, pH, contact time, nitrate and phosphate initial concentrations and temperature on the nitrate and phosphate sorption using synthesized bead and nanofibrous adsorbents was investigated in a single system. The reusability of chitosan/Al2O3/Fe3O4 composite beads and nanofibers after five sorption-desorption cycles were carried out. The Box-Behnken design was used to investigate the interaction effects of adsorbent dosage, nitrate and phosphate initial concentrations on the nitrate and phosphate removal efficiency. The pseudo-second-order kinetic model and known Freundlich and Langmuir isotherm models were used to describe the kinetic and equilibrium data of nitrate and phosphate sorption using chitosan/Al2O3/Fe3O4 composite beads and nanofibers. The influence of other anions including chloride, fluoride and sulphate on the sorption efficiency of nitrate and phosphate was examined. The obtained results revealed the higher potential of chitosan/Al2O3/Fe3O4 composite nanofibers for nitrate and phosphate compared with chitosan/Al2O3/Fe3O4 composite beads. © 2016


PubMed | Isfahan University of Technology, Institute of higher education, Amirkabir University of Technology, University of Houston and Islamic Azad University at Birjand
Type: Journal Article | Journal: International journal of biological macromolecules | Year: 2016

In the present study the chitosan/Al


Du Q.,Institute of Higher Education | Kou B.,Institute of Foreign Languages
Progress in Mine Safety Science and Engineering II - Proceedings of the 2nd International Symposium of Mine Safety Science and Engineering | Year: 2014

With the establishment of modern enterprise system and its huge benefits, the establishment of a modern enterprise has become the only way for coal enterprise to make sustainable development. Only improving the current coal enterprise safety education, constantly strengthening staff training, and improving the overall safety of the workers quality, can we ensure the competitive advantage of enterprise itself, and keep an impregnable position in the market competition. As a result, the coal enterprise safety education is an effective way to enhance their awareness of the importance of enterprise staff safety, and it is a main method of improving the quality of company worker safety, and it is also the important guarantee to realize safety in production. © 2014 Taylor & Francis Group.


PubMed | Kermanshah&mdash;Based, Institute of Higher Education, Razi University, Kermanshah University of Medical Sciences and Kermanshah Based
Type: Journal Article | Journal: Cellular and molecular biology (Noisy-le-Grand, France) | Year: 2016

Cumin is an important medicinal plant in Iran. Plant cell suspension culture is a method for the production of medicinal and secondary metabolites. The linalool is a plant secondary metabolite that has been recognized as a neuroprotective agent. The purpose of this study was to evaluate the effects of salicylic acid elicitor on induction of linalool in cell suspension culture of cumin. For this purpose, the cumin seeds were prepared, to obtain sterile seedling, were disinfected with sodium hypochlorite and alcohol, and were cultured on MS basal medium. This research was conducted in two separate experiments including callus induction and suspension cultures. Leaf explants were prepared from sterile seedlings and used to produce callus on MS medium supplemented with 1 mg/l NAA and 0.5 mg/l BAP. In order to establish suspension culture, the appropriate calli were transferred to liquid medium. Then cell cultures were treated with elicitors. The effects of elicitor on the production of linalool secondary metabolite and cell viability were assessed by GC-Mass and tetrazolium test respectively. For this purpose, the salicylic acid (at concentrations of 0, 1, 2, 4 and 8 mg/l) was used. The experimental design was a completely randomized design with five treatments and three replications. The results of cell culture and GC-Mass analysis showed that salicylic acid had significant effects on the linalool production (<0.01). At all concentrations of salicylic acid, viability of the cells in suspension culture experiments was lower than control. Increasing the elicitor concentrations lead to reduction in cell survival. In conclusion it is possible to produce linalool as a secondary metabolite and pharmaceutical agent in cell culture of cumin. It is necessary to determine the best combination of medium and elicitor.


Pourali M.R.,Islamic Azad University | Jozi M.,Islamic Azad University | Rostami K.H.,University of Mazandaran | Taherpour G.R.,Islamic Azad University | Niazi F.,Institute of Higher Education
Research Journal of Applied Sciences, Engineering and Technology | Year: 2013

Timeliness of financial reporting of company has a significant importance in users view. One reason that makes researchers interested in study in this field is that audit report can cause delay in reporting financial statements. This study has been researched in the capital market of Iran (TSE) and has 1397 year-firm during 2004- 2010. Results show that except debt ratio which its relationship with audit delay is rejected, all the rest like size of company, earning per share changes, industry, extra-ordinary figures, audit opinion have an significant relationship with audit delay. © Maxwell Scientific Organization, 2013.


Taghipour S.,University of Tehran | Taghipour S.,Institute of Higher Education | Kananian A.,University of Tehran | Kananian A.,Institute of Higher Education | And 2 more authors.
Arabian Journal of Geosciences | Year: 2014

The Esfordi iron oxide-apatite deposit is located in the Bafq district, Central Iran. The ore body is hosted by the Lower Cambrian succession of rhyolite, rhyolitic tuff, cherty dolomite, and limestone. Calc-silicate assemblages occur locally in altered host rocks as stratigraphically controlled patches. The main hydrothermal minerals include apatite, magnetite-hematite, actinolite, garnet, clinopyroxene, talc, calcite, and quartz. The prograde calc-silicate mineral paragenesis manifests as garnet (Ad96.7, Gr1.88) and clinopyroxene (Di76.14, Hd22.65, Jo1.21), whereas apatite, magnetite, hematite, tremolite-actinolite, chlorite, talc, epidote, quartz formed during retrograde episode. Microthermometric results yield a temperature range for 222-465 ° C, with a salinity of 8 to 21 wt% NaCl for apatite that coexists with retrograde mineral assemblage. δ18O isotopic variations of apatite (1.23-14.9 ‰), magnetite (6.8-8.3 ‰), and quartz (13.8-15.8 ‰) suggests that mixing of magmatic and meteoric fluids occurred during mineralization. Calc-silicates prograde stage is believed to have formed at T < 550 °C and high f{hook}O2 conditions. The field, mineralogical, and geochemical evidence indicate distal calcic skarn type alteration occurred locally in the Esfordi hydrothermal system. © 2014 Saudi Society for Geosciences.


Farokhi S.,University of Technology Malaysia | Sheikh U.U.,University of Technology Malaysia | Flusser J.,Czech Institute of Information Theory And Automation | Shamsuddin S.M.,University of Technology Malaysia | Hashemi H.,Institute of Higher Education
Jurnal Teknologi (Sciences and Engineering) | Year: 2014

This study evaluates the performance of global and local feature extractors as well as dimension reduction methods in NIR domain. Zernike moments (ZMs), Independent Component Analysis (ICA), Radon Transform + Discrete Cosine Transform (RDCT), Radon Transform + Discrete Wavelet Transform (RDWT) are employed as global feature extractors and Local Binary Pattern (LBP), Gabor Wavelets (GW), Discrete Wavelet Transform (DWT) and Undecimated Discrete Wavelet Transform (UDWT) are used as local feature extractors. For evaluation of dimension reduction methods Principal Component Analysis (PCA), Kernel Principal Component Analysis (KPDA), Linear Discriminant Analysis + Principal Component Analysis (Fisherface), Kernel Fisher Discriminant Analysis (KFD) and Spectral Regression Discriminant Analysis (SRDA) are used. Experiments conducted on CASIA NIR database and PolyU-NIRFD database indicate that ZMs as a global feature extractor, UDWT as a local feature extractor and SRDA as a dimension reduction method have superior overall performance compared to some other methods in the presence of facial expressions, eyeglasses, head rotation, image noise and misalignments. © 2014 Penerbit UTM Press. All rights reserved.


Barzegari A.,Payame Noor University | Ebrahimi M.,Islamic Azad University at Āmol | Azizi M.,Razi University | Ranjbar K.,Institute of Higher Education
World Applied Sciences Journal | Year: 2011

This study designed for understanding the nutrition knowledge, attitude and food habits of college's students. The target population consisted entirely of college student of Payam Nour Universities. Standard questionnaire (K Parmenter and J Wardle 1999) which was developed to measure subject's nutrition knowledge, attitude and food habits distributed among 415 students randomly. After translation, questionnaires were evaluated by professor's faculty of physical education and sport sciences. The reliability analysis yielded Cronbach Alpha values of 0.78 for the knowledge and 0.74 for the attitude scales. The collected data was analyzed by t-test, one-way ANOVA and Pearson correlation coefficient (P<0.05). Results show that nutrition knowledge score in physical education student were highest and in business management student were lowest. ANOVA show that there were no significant differences among nutrition knowledge of all majors and between genders. Also nutrition attitude scores for physical education were highest and for psychology were lowest; but difference between nutrition attitudes among all majors was not significant. There were significant positive correlations between nutrition knowledge and attitude; and between nutrition attitude and food habits of male and females students.According to our results, we suggest that student should more attention to nutrition. Also study in college as a golden period for learning, can affect on promote nutrition knowledge, attitude and practices of students, therefore the importance of nutrition in various college curriculums and improvement of the learning environment, related to nutrition need to be emphasized on college campuses. © IDOSI Publications, 2011.

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