مرتضی نوابی

To achieve competitive advantage, organizations need to build the infrastructure that can be achieved through the implementation of investment projects in the organization. On the other hand, limited resources prevent the implementation of all potential projects, and prioritizing and selecting among them would be necessary. When evaluating investment projects, it is important to consider a variety of criteria and organization's mission and strategy along with well-known economic indicators in a decision-making model to make it closer to the real-world situations. In many organizations, unclear viewpoints, and sometimes personal tastes, instead of having an integrated system according to specific and measured criteria for decision making, influences the choice of the projects. This paper presents a multi-criteria prioritization model of integrative AHP and SAW, for evaluating investment projects in Mobarakeh Steel Company, which describes the appropriate criteria and how to measure them along with the priority determination method. Applying of the proposed model in practice to systematically select the projects reduces the chance of project elimination after approval, while decreases the personal manner. The application of the proposed model on the set of investment projects of the company in 1997 shows the compliance of more than 85% of the obtained prioritization with what has happened in practice. T

Gas condensate reservoirs are generally deeper and are found at higher pressures and temperatures relative to oil reservoirs. Light hydrocarbon compounds are parts of crude oil and gas condensates, which have different types of structures. 7-carbon hydrocarbons with open chain and branch ring structures can be considered as good indicators for the recognition and origin of organic matters, source rock characteristics, etc. In this study, three fluid samples of three independent gas fields in southern Iran, from Kangan and upper Dalan formations (with similar geochemical characteristics), are subjected to detailed hydrocarbon analysis (with the ability of the identification of molecular components of the organic compounds) and other PVT experiments, and changes in the concentration of specific compounds having 7 carbons or less in different reservoir conditions were studied. The results showed that according to the overall parameters, samples A and C were similar and both were different from sample B, which was attributed especially to the difference of reservoir conditions between samples A and C with sample B. Also, the paraffinicity property of fields initially decreased but then increased from A to C, and, likewise, field B represented vast evidence for the occurrence of biodegradation processes. Figures showed that the source rock of sample C had obviously the terrigenous origin, but understanding the origin of samples A and B were carried out using various diagrams and it was determined that the two fields had the dry origin. It was also found that the mixing process of reservoir contents having organic matters with that of the other formations have probably occurred in sample C.

Pain is a complex medical problem creating which inadequate control pain results adverse effects on the patients physiological, metabolic and mental conditions.The aim of this study was comparison effect of Ketamin-propofol with Alfentanil-propofol on creating analgesia and sedation during cystoscopy and comparing the side effects of two drugs and patient and physician satissfaction. In this double- blind clinical trial 140 person who were candidate for cystoscopy were randomly divided into two groups The first group received 1mcg/kg alfentanil with 1mg/kg propofol and the second group received 0.5 mg/kg ketamin with 1mg/kg propofol. Sedation score, pain score, time of cystoscopy and hemodynamic changes determined and data were analyzed by SPSS. The mean of sedation in alfetanil group was significantly more than ketamin group(p=0.001). The mean of pain score in alfetanil group was significantly less than ketamin group(p=0.001). The time of cystoscopy in cystoscopy in alfetanil group was significantly less than ketamin group (p=0.001). Results showed that alfentanil-propofol compare to ketamin-propofol reduced pain score and increased time of sedation with less side effects during cystoscopy. So this study supports the preference alfentanil compare to ketamin.