An Experimental Study of Surfactant Alternating CO2 Injection for Enhanced Oil Recovery of Carbonated Reservoir

Core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating CO2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. The core samples were provided from a low permeability mixed wet oil reservoir at 156 °F and 1900 psia. In addition, very few studies of surfactant adsorption on carbonate minerals have been conducted. Hence, the surfactant adsorption on carbonate rock was determined by core flooding and crushed tests. It was found that for the crushed rock, the required equilibrium time is approximately five hours, while it is more than four days for the flow-through tests. Hysteresis effects demonstrated that the irreducible water saturations were 5 to 10% higher than the initial connate water saturation after drainage cycles during 5000 ppm surfactant solution. Furthermore, near-miscible surfactant alternating CO2 injection process led to a 4-17% increase in the recovery factor in comparison to water alternating gas process

The Impact of Smoking Cessation Training-Counseling Programs on Success of Quitting Smoking in Patients with Acute Coronary Syndrome

Background: The smokers who use supportive programs have a greater chance to quit smoking. Smoking cessation recommendation is one of the most important prevention and treatment methods mentioned in care guidelines provided for patients with acute coronary syndrome. Aim: The main objective of this study is to determine the effects of training-counseling programs on smoking cessation in patients with acute coronary syndrome. Method: In this randomized controlled clinical trial, 51 patients with acute coronary syndrome in Ghaem and Imam Reza hospitals in Mashhad, 2015, after filling the Multinational Monitoring of Trends and Determinants in Cardiovascular Disease (MONICA) questionnaire, were categorized into two groups. Intervention group received smoking cessation training-counseling program and control group received some advices/recommendations to quit smoking. After a three-month telephone follow-up, smoking cessation standard questionnaire was filled for all patients. The data were analyzed using SPSS v11.5 and Chi-square test. Results: The age of study participants was 52.6± 7.9 and 56.2±12.3 for intervention and control group, respectively. According to Chi-square test, a significant difference was observed between intervention and control groups in first through fifth stages after the intervention in terms of  succeed to quit smoking (

Spiritual interventions for preventing HIV/AIDS in Iran

Developing health programs based on the beliefs and values of communities has a great impact. Given the priority and importance of AIDS and its transmission through high-risk sexual behaviors, we sought to design a religious/spiritual intervention for preventing AIDS. Relevant statements were extracted from the literature and spiritual/religion documents, and the study questions were reviewed by a modified Delphi consensus panel. The statements were arranged in four areas of recipients, main components, providers, and settings for spiritual interventions. Using the existing capacities for Islamic spiritual interventions to prevent and control AIDS requires the development of executive factors along with underlying factors, such as infrastructure and facilities for the provision of interventions. The results of this study can lay the groundwork for supplementary studies