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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Chemical Health Risks
- نوع مقاله: Journal Article
- کلمات کلیدی: UV light,Unsaturated Fatty Acid,Hexane extract,Sunscreen,Anthemis talyschensis
- چکیده:
- چکیده انگلیسی: In this study, both the presence and concentration of some unsaturated compounds in hexane extracts of different parts of Anthemis talyschensis showing absorption at wavelength 280-450 nm were surveyed, with the view of possibly using extracts of this plant in new formulations of sunscreen creams. The hexane extracts of flower, leaf and stem of A. talyschensis, collected from Northwest Iran, were obtained using a Soxhlet apparatus. The fatty acids were derivatized to methyl esters and were determined by gas chromatography/flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS) systems. The chemical analysis resulted in identification of 14, 9 and 29 constituents, comprising about 99.5, 97.1 and 98.2% of the total constituents in hexane extracts of flower, leaf and stem, respectively. The main unsaturated constituents in the hexane extract of A. talyschensis flower were 9, 12-octadecadienoic acid, 9-octadecenoic acid and 6, 9, 12-octadecatrienoic acid; while the leaf's extract contained 9, 12-octadecadienoic acid and 9-octadecenoic acid; no unsaturated compounds were detected in the stem. The ratios of unsaturated fatty acid /saturated fatty acid were 13.6, 9.3 and 0 in extracts of the flower, leaf and stem, respectively, but the total amounts in the leaf were much greater. It can be concluded the leaf extract is more likely to be suitable for producing sunscreens creams than others.
- انتشار مقاله: 17-03-1395
- نویسندگان: Alireza Motavalizadehkakhky,Ali Shafaghat,Jamshid Mehrzad,Masoud Shafaghatlonbar,Farzaneh Azimi,Zohreh Ebrahimi,Abollfazl Sakeri
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Artificial Intelligence in Electrical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Robot,Carrier,Roller Hemming,DeviceNet,Peres
- چکیده:
- چکیده انگلیسی: In this article, new techniques and technologies have been tried and tested in the installation and commissioning of Roller Home industrial robots, in order to produce a Tiba car with a focus on cost reduction. Due to the fact that press equipment for automobile parts requires a lot of expenses, it was decided to use robots with the same function of roller to reduce costs and increase the quality and increase the product variety. The Hamming roller robot can flexure the single-layer and multi-layer sheets, according to its structure and advantages, and then with a suitable and variable pressure at any point. To reduce the cost using the Devicenet network of Hamming roller robots in The production of the TB vehicle as a carrier carrier has also been used, which has reduced the cable, connectible equipment and carrier robots.
- انتشار مقاله: 03-09-1397
- نویسندگان: Hamidreza Valizadeh,Keivan Gharbanian,Alireza Nourinejhad
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Kinetics,isotherms,Removal,Cocopeat
- چکیده:
- چکیده انگلیسی: The aim of the present work was to investigate the ability of Cocopeat to remove of lead (II) from aqueous solutions. The effects of different parameters such as particle size, adsorbent dosage, pH, contact time, agitation speed and concentration on the removal process has been investigated. The maximum removal of lead ion (92.5%) took place in the pH range of 4 contact time in 30 minutes and initial concentration of 30 mg.L-1. Results indicated that the Langmuir model gave a better fit to the experimental data in comparison with the Freundlich equation. The process followed pseudo-second-order kinetics.
- انتشار مقاله: 01-02-1390
- نویسندگان: Abollfazl Shakeri,Nourallah Hazeri,,Jafar Valizadeh,Esmail Hashemi,Ali Reza Motavalizadeh Kakhky
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Engineering, Transactions A: Basics
- نوع مقاله: Journal Article
- کلمات کلیدی: Moving Least Squares,Image Zooming,Bilinear Interpolation,Bicubic Interpolation
- چکیده:
- چکیده انگلیسی: In this paper, a new method for gray-scale image and color zooming algorithm based on their local information is offered. In the proposed method, the unknown values of the new pixels on the image are computed by Moving Least Square (MLS) approximation based on both the quadratic spline and Gaussian-type weight functions. The numerical results showed that this method is more preferable to bilinear interpolation in term of quality (for the quadratic spline weight function), and is comparable to bicubic interpolation (for the Gaussian-type weight function).
- انتشار مقاله: 11-10-1348
- نویسندگان: Mohammad Kianpour,Saeed Ketabchi,Mohammad Javad Mahmoodabadi,Reza Valizadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Advanced Research in Microbial Metabolites & Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Baluchi Lamb,Rumen Microbes,High Concentrate Diet,Pyrosequencing
- چکیده:
- چکیده انگلیسی: Baluchi sheep is the dominant fat-tail breed in Iran. We studied the microbial communities in the rumen of four Baluchi lambs fed a high concentrate conventional diet, the partial ribosomal rRNA of bacterial and archaeal were amplified by polymerase chain reaction (PCR) using DNA extracted from rumen samples. The amplicons were sequenced using 454 Titanium pyrosequencing and the data analyzed using the QIIME software package. The results indicated that Prevotella, a member of the phylum Bacteroidetes, dominated and its relative abundance accounted for 70.7 ± 2.68 % of the bacteria. Firmicutes was the second most abundant phylum, and Selenomonas and unclassified Veillonellaceae and Lachnospiraceae were present at relative abundances of 2.4 ± 0.62, 2.1 ± 0.21 and 1.9 ± 0.58 %, respectively. Entodinium was the most abundant genus of protozoa, comprising 61.6 ± 4.52 % of the protozoal community, followed by Polyplastron and Isotricha with relative abundances of 18.2 ± 2.35 and 9.7 ± 5.62 %, respectively. More than half of the archaeal community (53.3 ± 1.87 %) was composed of members of the Methanobrevibacter gottschalkii clade. The second and third most dominant archaea were members of the order Methanomassiliicoccales (28.3 ± 5.23 %) and Methanobrevibacter wolinii and relatives (8.5 ± 4.26 %). Based on this, rumen microbes of Baluchi lambs fed a total-mixed rations diet were similar to rumen microbes of ruminants fed similar diets in the other geographic regions around the world.
- انتشار مقاله: 19-06-1396
- نویسندگان: Seyed Hadi Ebrahimi,Reza Valizadeh,Vahideh Heidarian Miri,Peter Janssen
- مشاهده