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Articles by F. Mohsenzadeh
Total Records ( 2 ) for F. Mohsenzadeh
  F. Mohsenzadeh , K. Naddafi , J. Nouri and A.A. Babaie
  The bag filters are important equipments in cement factory. In these filters current flow that includes gas and dust cross through the pores are located in the stuff filter and filtrate by that remaining on the bag. Afterward, by dust increase on the bag, the filter is shaken until dust collecting leads to exit hopper. This system in this project is called mechanical method. In order to obtain a better operation after introducing to the operation mechanism, the same steps like create good situation for maintain for maintenance and repairs by consideration on important fragment and appoint minority of stock in the stores, carry out the planning of the maintenance and repairs, improvement of stock mandatory. Then, the pressures were measured in various part of filter system and controlled the pressure drop. By inspection of various kinds of bags used in the filter, 550 g m-2 polyester bags showed a better performance and parameter effective in tearing and wearing of bags which were recognized. Also by installing timer on the shaking system, the shaking periods of bags were increased. In order to increase dust cake layer and better performance of deducting and bags life time. Assessment of operation on a sample bag filters show that the ready operation time of filter was increased about 200% and out put of dust amount decreased to the below of the standard limits.
  F. Mohsenzadeh , A. Chehregani and H. Amiri
  Context: Tanacetum parthenium Schultz Bip. (Asteraceae) is an aromatic perennial plant, widely distributed in the northern hemisphere. This species traditionally has been used in insecticides, cosmetics, balsams, dyes, medicines and preservatives. Material and methods: The essential oil of T. parthenium was obtained by hydrodistillation in three developmental stages and analyzed by gas chromatography-mass spectrometry. The antibacterial activity of the oils was investigated against four Gram-positive and four Gram-negative bacteria. The oil was tested for cytotoxicity against THP-1 cells using the Trypan blue assay. Results: Twenty-nine components were identified in the essential oil; the highest amount was extracted at the flowering stage. The main component, in the flowering stage, was camphor (18.94%) and other major components were bornyl acetate (18.35%), camphene (13.74%), bornyl isovalerate (3.15%), borneol (10.93%), juniper camphor (6.23%) and β-eudesmol (2.65%). Minimum inhibitory concentration of essential oil was evaluated from 4 μL mL-1 against Staphylococcus subtilis to 38 μL mL-1 against Entrobacter aerogenes. Toxicity assay showed that the oil has no significant toxicity at 5-15% v/v concentrations on THP-1 cells. Discussion and conclusion: This study demonstrates the occurrence of camphor/bornyl acetate chemotype of T. parthenium in western regions of Iran. The finding showed also the studied oils have relatively good antibacterial activity without significant toxicity, thus have great potentiality to be used as natural health product.
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