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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Progress in Chemical and Biochemical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Membrane,Nano-filtration,pressure,Oil Industry,acid gas
- چکیده:
- چکیده انگلیسی: The presence of H2S and CO2 is unfavorable in many processes and flows, particularly in natural gas flows. Therefore, removing this gas is one of the important issues in many systems. One of the most widely used techniques is the use of membrane. Therefore, the gas that passes through the membrane has low pressure. Membrane system is used to absorb a high volume of CO2. The factors needed for this kind of separation include gas composition, pressure, and temperature difference. An enhanced electrochemical membrane can also be used with coal gas to separate acid gases. Hydrogen is so rich in this process in which cathode and sulphur steam are produced and then exited. Granular activated carbon (GAC) can be used as supporting material to absorb H2S. The advantages of this method are including high capacity for H2S absorption and gas emission. Removing the H2S from waste gases or natural gas with high densities is done via bio-filter in this system. Granular activated carbon can be used as a supporting material to stabilize the microorganisms. Principal properties of the supporting material are including the mass density, the area of special surface, and the amount of its pH. This research discusses the membrane technology in removing the acid gases in the oil technology.
© 2020 by SPC (Sami Publishing Company), Reproduction is permitted for noncommercial purposes.- انتشار مقاله: 20-07-1398
- نویسندگان: Amir Samimi,Soroush Zarinabadi,Alireza Bozorgian,Ahmadreza Amosoltani,Mohammad Sadegh Tarkesh Esfahani,Kasra Kavousi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Patient Safety & Quality Improvement
- نوع مقاله: Journal Article
- کلمات کلیدی: Infection,deep vein thrombosis,Difference of two legs periphery
- چکیده:
- چکیده انگلیسی: Introduction: Considering the high rate of mortality in patients with Deep Vein Thrombosis (DVT) and pulmonary embolism, the aim of this study was to evaluate the role of daily measurement of lower limb circumference in early diagnosis of DVT in patients admitted to Infectious Diseases Ward of Imam Reza Hospital, Mashhad, during 2012-2013. Materials and Methods: This cross-sectional study was conducted in Infectious Diseases Ward of Imam Reza Hospital of Mashhad, Iran. Patients were divided into two age- and gender-matched groups. In the first group, the difference between the two legs was greater than 1 cm and in the second group it was 3 cm or more. Circumference of the two legs was assessed on a daily basis at 10 cm above tibial tuberosity. Doppler sonography was performed to rule out DVT. Data were analyzed using SPSS, Version 16. Results:A total of 204 patients were enrolled in this study, 18 of whom (8/8%) were diagnosed with DVT through Doppler sonography. In addition, 17 patients (11/3%) had fever as a comorbidity. Mean difference of the two legs was more than 3 cm in 16 DVT patients (14%), and two patients with mean difference of less than 3 cm had DVT. Conclusion: Daily measurement of lower limb circumference was an accurate and cost-effective technique for early diagnosis of DVT.
- انتشار مقاله: 05-03-1394
- نویسندگان: Ali Akbar Heydari,Rryhane Jafari,Amin Bojdy,Mehrdad Farokhnia,Javad Ghaboulishahroodi,Ahmad Khalifeh Soltani,Hamid Reza Naderi,Mohammad Reza Sarvghad,Ashraf Tavanaee Sani
- مشاهده
- جایگاه : پژوهشی
- مجله: Advance Researches in Civil Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Survival analysis,Relief Time,earthquake,Red Crescent Society
- چکیده:
- چکیده انگلیسی: Earthquakes are considered a high catastrophic and unpredictable natural catastrophe and reports on structural collapses reveal a persistent vulnerability and emphasize the importance of better integration of collective response to such disasters. To alleviate the collapses and victims, there is a need to standardize all phases of USAR operations (deployment, search, locate, extrication, on-site medical support) and increase the speed of rescue efforts. Investigating the effective factors on the duration between the start to the end of the relief effort, will be useful to improve crisis management for reducing wasting time and optimizing the management of future events. In this paper, it has been tried to estimate the duration between the beginning and the end of the earthquake relief by some explanatory variables. It is used Survival modeling like Cox regression or Kaplan–Meier to assessment and comparison of the effect of the explanatory variables such as: earthquake magnitude power, the amount of services provided by the Red Crescent society, level of health care and etc. For this research, the relief and rescue organization database has been used. The median of time between start to end of relief operation is 4.6 hours. Cox model applying showed that level of use of air and logistics services and the number of rescuer teams leads to shorter time significantly (p<0.05). Log Rank test didn’t distinguish difference between time median in two years 1396 and 1395 (p=0.423).
- انتشار مقاله: 13-02-1399
- نویسندگان: Batoul Khoundabi,Ahmad Soltani,Navvab Shamspour
- مشاهده