Scrophularia umbrosais a medicinal plant used as a traditional herb. This study was designed to investigate the phytochemical analysis of methanol (MeOH), DCM, and n-Hexane extracts of rhizome as well as total phenol and total flavonoid contents (TPC and TFC). In-vitro β-hematin formation assay and DPPH method were applied for analyzing antimalarial and free-radical scavenging activities of the extracts, respectively. The formation of hemozoin has been proposed as an ideal drug target for antimalarial screening programs. The results showed that n-hexane and MeOH extracts of rhizome had no significant inhibitory effect on heme biocrystallization whereas the DCM extract of rhizome showed moderate antimalarial activity in comparison with chloroquine. GC-MS data showed that volatile portions of DCM and n-Hexane extracts from Scrophularia umbrosa (S. umbrosa) contained a few identifiable compounds. Moreover, fractions 20% and 40% MeOH-Water of MeOH extract of S. umbrosa displayed moderate to strong free radical scavenging activity which showed a positive relation between phenolic and flavonoid contents and free radical scavenging activity. Based on the results, the fractions of MeOH extract were evaluated by 1HNMR for predicting the groups of natural compounds and interfacing of chemical and biological assessments.

Background: Scrophularia umbrosa is a plant used as a traditional herb. Objectives: This study was designed to investigate the antimalarial activity and free radical scavenging of methanol, DCM and nHexane extract of aerial parts and seed, as well as total phenol, total fl avonoid contents, and phytochemical identifi cation. Methods: GC-MS technique were used for identifi cation of the chemical compositions of the DCM and n-Hexane extract as well as HPLC and NMR techniques for methanolic extract. The hemozoin formation has been suggested as a desirable drug target to antimalaria sieve scheme. In the present study, we used the spectrophotometric assay to screen the potency of plant extracts. The DPPH method has been used for antioxidant activity screening of the extracts and fractions. AlCl3 and Folin-Ciocalteu reagents, respectively, were used for total fl avonoid and total phenol contents of samples. Results: Our results showed that n-hexane and the MeOH extracts of the aerial parts, and seed did not display any impressive prevention of heme biocrystallization confi dants, however, the DCM extract of aerial part, in the comparison with the blank, showed slightly antimalarial eff ects. Furthermore, fractions (20%, 40%, and 60%) of MeOH extracts of aerial part and seed of S. umbrosa had moderate to strong antioxidant activity and it is possible to conclude that there is a positive relation between phenolic and fl avonoid compositions as well as antioxidant activity. GC-MS data showed that volatile portions of DCM and n-Hexane extracts of various organs from S. umbrosa are containing few identifi able compounds. In addition, Aucubin and Luteolin-7-O-rutinoside were also recognized from MeOH extracts. Conclusions: Based on the results, the fractions of extracts could be evaluated by 1 HNMR for predicting of groups of natural com-pounds as well as interfacing chemical and biological assessments.

Production optimization ensures that wells and facilities are operating at their peak performance at all times to maximize production. This paper describes a procedure, to develop Inflow Performance Curves, Tubing Performance Curves and Choke Performance Curves, for one of the Iranian southern oil wells, from the results of a multiphase flow simulator (PIPESIM). The goal of this project is to optimize the production from one of the southern Iranian oil fields. Increasing the choke size leads to maximizing production, and causes an optimum reduction in wellhead pressure and bottomhole flowing pressure. Controlling flow patterns in all sensitivity analysis play a major role in selecting the proper variables. Using 7in. OD tubing size rather than 9 5/8 in. casing size and selecting 9/16 in. choke size rather than 7/16 in., the wellhead pressure between 700 to 1180 psia will be the result and optimum range in selected well No. 305b. The results show a successful experience in optimization of well No.305b and the production can be increased from 2000 BOPD to 3150 BOPD.

Considering convergence of vast and different technologies in new generation networks, the required quality of service is the key success factor. The site implementation according to special benchmarking (TPC-W), to achieve the acceptable service performance may be offered in a cost effective manner, is very complicated.In this paper a mathematical method will be introduced to help providers to make informed decisions with respect of right level of resources (number and server capacity, number and power of CPUs, and amount of permanent and temporary memory). The numerical results show that the new formulation confirms the results e-commerce site emulation in an acceptable level.

Fruit ripening involves marked physiological and biochemical changes that affect fruit color, taste, aroma, texture, and nutritional value. A significant amount of research has shown that chitosan interacts with other postharvest treatments, which can enhance the impact of the chitosan coating. This study considered the effects of chitosan coating and melatonin on banana shelf-life and fruit quality at the green mature stage. The studied variables had three levels of melatonin 0, 75, and 150 mg L-1, two levels of chitosan coating 0, 0.25, and 0.5%, and three storage durations 3, 6, and 9 days. Fruits were harvested at the green mature stage and stored at 25 °C and 80% RH for 9 days. The results showed that melatonin and chitosan coating interacted and significantly affected green mature banana quality and shelf-life during the storage time. Chitosan and melatonin interaction delayed the decrease in chlorophyll and the increase in carotenoids, fruit maturity, and color change. Our results showed that on the ninth day of storage under chitosan (0.5%) treatment along with melatonin at a concentration of 150 mg L-1, the total chlorophyll content became 3.89% lower than that under control conditions. The level of antioxidant enzyme activity in the treated samples after 3, 6, and 9 days of storage was more than in the control sample. The results showed that chitosan (0.5%) and melatonin (150 mg L-1) successfully increased the shelf life of banana fruits.