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Articles by M. Zarei
Total Records ( 5 ) for M. Zarei
  R. Ghasemi , M. Zarei and M. Torki
  Problem statement: In trying to finding phytogenic antibiotic-substitutes this study was done and effects of adding graded levels of Medicinal Herbs (MH) including garlic (Allium sativum) and thyme (Thymus vulgaris) to laying hens’ diet on productive performance investigated. Approach: A total number of 108 Lohmann LSL-Lite hens after production peak were randomly divided in 18 cages (n = 6). Three iso-energetic and iso-nitrogenous experimental diets (ME = 2720 Kcal Kg-1 and CP = 154.2 g Kg-1) including three levels (0, 1 and 2 g kg-1) of ground mixture of garlic and thyme (1:1) were fed to hens with 6 replicates per diet during 6 week trial period. Collected data of Feed Intake (FI), Egg Production (EP), Egg Mass (EM) and calculated Feed Conversion Ratio (FCR) as well as egg traits were analyzed based on completely randomized design using GLM procedure of SAS. Results: Dietary treatment did not have significant effect on EP, EM and FCR in laying hens (p>0.05). Dietary inclusion of MH decreased FI in weeks 1-6 (p≤0.05). Including diet with 0.1% MP improved means of egg weight (g) comparing to the other two experimental diets. Adding 0.2% MH to diet increased egg yolk color as well as blood lymphocyte counts and decreased egg shell weight comparing to other dietary treatments (p≤0.05). Conclusion: In conclusion, dietary inclusion of garlic and thyme can have beneficial effects on performance of laying hens in terms of improving egg weight and yolk color.
  A. A. Taleizadeh , S. Nikpour and M. Zarei
  An Uncertain Economic Order Quantity (UEOQ) model with payment in advance is developed to purchase high-price raw materials. A joint policy of replenishments and pre-payments is employed to supply the materials. The rate of demand is considered fuzzy rough variables, lead time is taken to be constant and it is assumed that shortage does not occur in the cycles. The cycle is divided into three parts; the first part is the time between the earlier replenishment-time to the next order-time (t0), the second part is the period between t0 to a payment-time (tlc) and the third part is the period between tlc to the next replenishment-time. At the start of the second part (t0), α% of the purchasing cost is paid. The (1-α)% remaining purchasing cost is paid at the start of the third part (tlc). The cost of the model is purchasing under incremental discount, clearance cost, fixed-order cost, transportation cost, holding and capital cost. Holding cost is for on-hand inventory and capital cost is for the capital that is paid for the next order. The constraints of the problem are space, budget and the number of orders per year. Also lead-time is considered less than a cycle time. We show that the model of this problem is a fuzzy rough mixed integer-nonlinear-programming type and in order to solve it, hybrid method of particle Swarm Optimization and fuzzy rough simulation is used. At the end, a numerical example is given to demonstrate the applicability of the proposed methodology in real world inventory control problems.
  Ata Allah Taleizadeh , S. Mokaram , N. Shafii and M. Zarei
  This study introduced an Economic Order Quantity (EOQ) model with payment in advance to purchase high-price raw materials. We relax and change some assumptions that were considered in earlier researches. At first we considered transportation cost as a linear function. Total discount policy is considered instead of incremental discount one. Also we developed model based on two warehouses strategy to store raw material in which holding cost is different for each of warehouses. We show that the model of this problem is shown to be a mixed-integer-nonlinear-programming type and in order to solve it, a simulated annealing approach is used. At the end, a numerical example is given to demonstrate the applicability of the proposed methodology in real world inventory control problems.
  M. Zarei , M. Azizi and Z. Bashiri-Sadr
  Pomegranate is an important source of bioactive compounds and has been used extensively in the folk medicine of many centuries. The objective of this study was to analyse and compare the physico-chemical characteristics and bioactive compounds of pomegranate juices obtained from six pomegranate cultivars grown in Iran. This study showed that there were significant differences among the cultivars in all measured factors. The total soluble solids content (°Brix) varied from 15.77 (Shirin-e-Bihaste) to 19.56 (Rabbab-e-Fars), pH values from 3.06 (Faroogh) to 3.74 (Shirin-e-Mohali), titrable acidity concentration (g/100 g) from 0.51 (Shirin-e-Bihaste) to 1.35 (Rabbab-e-Fars) and total sugars content (g/100 g) from 16.88 (Rabbab-e-Fars) to 22.76 (Faroogh). The highest and lowest level of total anthocyanins (mg/100 g) were recorded in Aghaye and Shahvar (27.73 and 7.93), respectively. The concentration of ascorbic acid (mg/100 g) was between 8.68 (Aghaye) and 15.07 (Shirin-e-Bihaste). The total phenolics content (mg tannic acid/100 g) ranged from 526.40 (Shahvar) to 797.49 (Aghaye). The total tannins level (mg tannic acid/100 g) was observed in the pomegranate cultivars between 18.77 (Shahvar) and 38.21 (Aghaye). The values of the condensed tannins (mg catechin/100 g) ranged from 12.14 (Shirin-e-Bihaste) to 12.57 (Aghaye). The antioxidant activity varied from 46.51 (Shahvar) to 52.71% (Aghaye). The results also showed that antioxidant activity was positively correlated with total phenolics (r = 0.912), total tannins (r = 0.838), condensed tannins (r = 0.859) and total anthocyanins (r = 0.928). These data suggested that the cultivar was the main parameter which influences the composition of bioactive compounds in pomegranates.
  M. Zarei , D. Norouzian , B. Honarvar , M. Mohammadi , H. Ebrahimi Shamabadi and A. Akbarzadeh
  Niosoms are nanoparticles used in drug delivery systems. Niosomes are prepared by various methods. In this research niosoms were prepared by reverse phase evaporation and the factors affecting the niosomes formation were studied. Percent of paclitaxel pegylated and non-pegylated prepared with Span 60 were 95 and 92, respectively while for those of pegylated and non-pegylated niosomes with Span 20, 94 and 90, respectively. In addition, the average diameters of pegylated and no-pegylated prepared with Span 60 and 20 were determined to be 191, 214, 244 and 284 nm, respectively. The amount of released drug (48 h) from pegylated and non pegylated formulations in the presence of Spans 60 and 20 were 8, 10, 6, 7%, respectively. Cytotoxicities of paclitaxel niosom polyethyleneglycol, paclitaxel niosome and free paclitaxel on MCF-7 cell line after 48 hours were studied by MTT assay. The results showed the formulation prepared with Span 60 is more effective than that of Span 20 and the IC50 of the former was decreased twice while IC50 of the later decreased 1.5 times.
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