a. saeedi

Steam methane reforming process has the highest efficiency in hydrogen production methods. The role of temperature, pressure, inlet steam to methane ratio, Space velocity and catalyst are significant in the process. In this research, a numerical solution is illustrated using Cantera and Python to model Hydrogen production and synthesis gas through steam methane reforming with Nickel and Rhodium catalysts. The model has a temperature range of 600-1300K, steam to methane ratio 2-4, pressure 0.25-4bars, and gas hourly space velocity 150-120000. The results show that the best parameters range to produce Hydrogen using Nickel and Rhodium are temperature 1000-1300K, pressure 1-2 bars, velocity 5000-15000 per hour, and steam to methane ratio 2.5-3 and 3-3.5, respectively. Rhodium is more efficient than Nickel in certain operating conditions. However, the performance of these catalysts are the same at optimum states, so Nickel is more suitable than Rhodium because it is more economical and available.

Good and ethical governance has been proposed as one of the drivers of economic growth and development in the monetary system of countries and has attracted the opinion of policymakers in the banking system in order to improve productivity and financial stability. The present article, while classifying ethics, examines its function in the relationship between governance and financial stability of banks. In other words, Islamic and conventional banks were considered as the environment of ethics based on Sharia and conventional ethics, respectively.

The research method was quantitative-descriptive-correlation. The statistical population of the present study consists of banks in countries that, in addition to conventional banking, also provide Islamic banking services to customers. The research sample included banks from the United Arab Emirates, Malaysia, Qatar, Bahrain and Indonesia, and Iran was added to the research environment due to special conditions in the monetary system. The sampling method was stratified random. By referring to documents, records and library studies, data were collected and the results were analyzed by performing regression statistical test.

The results show that in banks where Sharia-based ethics prevail, political stability and government effectiveness have a significant relationship with financial stability. Also, in banks where conventional ethics prevail, the rule of law and the control of corruption have a significant relationship with financial stability.

Increasing the quality of public services, reducing bureaucracy, eliminating the direction of financial resources through political pressures and controlling sectarian differences will help the financial stability of Islamic banks and strengthen Sharia-based ethics. Conventional banks can also contribute to financial stability and improve ethics by focusing on stakeholder self-control.

Rheumatoid arthritis is a chronic, progressive disease of the joints that presents with articular and systemic symptoms. The purpose of this study was to determine the quality of life in patients with rheumatoid arthritis and its relationship with body mass index.

This descriptive-analytical study was performed in 195 patients with rheumatoid arthritis in Tohid Hospital, Sanandaj, Iran. The data collection tool was a questionnaire including demographic and clinical characteristics. The SF-36 instrument was used to evaluate the quality of life.

In the study, 40% of men and 58% of women had a disease severity higher than 2.6 according to the Disease Activity Score 28. There was a significant difference in all dimensions of quality of life including physical function, energy / fatigue and general health between men and women (P <0.05). All dimensions of quality of life were inversely correlated with BMI. There was a significant relationship between the disease severity and each of the dimensions of pain, general health and general changes (P <0.05).

Quality of life in patients with rheumatoid arthritis is correlated with body mass index and severity of rheumatoid arthritis; therefore, it seems that health policy makers or clinical practitioners need to pay more attention to these two factors to increase the patients’ quality of life.

The Pesteliegh Formation (Lower Paleocene) is composed of 94/5 m of sandstone, shale and evaporate units in the Chahchahe section. Shale samples show that major oxides such as SiO2, Al2O3, Na2O, P2O5 and trace elements like Sr, Ba, Nb and Ce are depleted relative to Upper Continental Crust (UCC) while, U and CaO enriched. The diagram of TiO2 versus Al2O3 and Zr versus Al2O3 suggest an intermediate igneous rock as possible source rock for shale of the  Pesteliegh Formation. The diagram of K2O/Na2O versus SiO2 and ternary diagram of Th/Co/Zr, La/Th/Sc, Th/Sc/Zr show a continental arc islands as tectonic setting for this Formation. The CIA index values reveal poor to moderate degree for intensity of weathering and arid to semi-arid as paleo-climate in the studied area. In the other hand, the U/Th and Ni/Co indexes indicate oxidant condition in depositional environment. The beginning of Paleocene was along with tectonic activity and regression of sea level in most parts of the word and well the Kopet-Dagh Basin in Iran. These occurrences were most important factor for deposition of siliciclastic sediments of the Pesteliegh Formation. Due to regression, the thickness of this formation decrease, from south east toward north west in Kopet-Dagh Basin.