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石油勘探与开发 2016年第4期43卷 656-661页

作者： al-MalKI Needaa POURAFSHARY Peyman al-hadrami hamoud ABDO Jamil Sultan Qaboos University

提出在膨润土基钻井液中添加海泡石纳米颗粒来控制其性能,并通过实验研究了不同温度压力条件下海泡石纳米颗粒对膨润土基钻井液流变性、滤失性等性能的影响。测量了添加海泡石纳米颗粒前后膨润土基钻井液在不同温度压力条件下的塑性黏... 详细信息

提出在膨润土基钻井液中添加海泡石纳米颗粒来控制其性能,并通过实验研究了不同温度压力条件下海泡石纳米颗粒对膨润土基钻井液流变性、滤失性等性能的影响。测量了添加海泡石纳米颗粒前后膨润土基钻井液在不同温度压力条件下的塑性黏度、动切力和滤失量,并在储集层温度压力条件下对添加海泡石纳米颗粒前后的膨润土基钻井液进行了岩心驱替实验,对比了钻井液的滤失量及对地层的伤害程度。结果表明:添加海泡石纳米颗粒可以提高清水和盐水膨润土基钻井液的塑性黏度和动切力;海泡石纳米颗粒可以在较大的温度和压力范围内特别是高温高压条件下保持钻井液流变性的稳定;储集层温度压力条件下,海泡石纳米颗粒降低了钻井液的滤失量,抑制了砂岩岩心渗透率降低。海泡石纳米颗粒是一种理想的膨润土基钻井液添加剂。

关键词：膨润土基钻井液钻井液性能高温高压海泡石纳米颗粒

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Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

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Petroleum Science 2016年第1期13卷 100-109页

作者： Yahya al-Wahaibi hamoud al-hadrami Saif al-Bahry Abdulkadir Elshafie ali al-Bemani Sanket Joshi Petroleum and Chemical Engineering Department Sultan Qaboos University Department of Biology College of ScienceSultan Qaboos University

This study investigates the potential of enhancing oil recovery from a Middle East heavy oil field via hot water injection followed by injection of a chemical surfactant and/or a biosurfactant produced by a Bacillus subtilis strain which was isolated from oil-contaminated *** results reveal that the biosurfactant and the chemical surfactant reduced the residual oil saturation after a hot water ***,it was found that the performance of the biosurfactant increased by mixing it with the chemical *** is expected that the structure of the biosurfactant used in this study was changed when mixed with the chemical surfactant as a probable synergetic effect of biosurfactant-chemical surfactants was observed on enhancing oil recovery,when used as a mixture,rather than *** work proved that it is more feasible to inject the biosurfactant as a blend with the chemical surfactant,at the tertiary recovery *** might be attributed to the fact that in the secondary mode,improvement of the macroscopic sweep efficiency is important,whereas in the tertiary recovery mode,the microscopic sweep efficiency matters mainly and it is improved by the biosurfactantchemical surfactant *** as evidenced by this study,the biosurfactant worked better than the chemical surfactant in reducing the residual heavy oil saturation after a hot water flood.

关键词： surfactant Injection attributed macroscopic saturation mixing microscopic contaminated tertiary enhancing

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Prevalence and Factors Associated with Postpartum Depression during the COVID-19 Pandemic among Women in Jeddah, Saudi Arabia: A Cross-Sectional Study

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Open Journal of Obstetrics and Gynecology 2020年第11期10卷 1644-1657页

作者： Aisha Ibrahim Tarabay Dalal Boogis Aysha Tariq Tabbakh Raghad Akram Kemawi Layan Abduljalil Boogis Abdulrahman Tariq Tabbakh Maha Mohsen al-hadrami Manal Mohsen al-hadrami Obstetrics and Gynecology Consultant King Abdulaziz Hospital Jeddah KSA Medical Intern IbnSina College Jeddah KSA Medical Student Battarje Medical College Jeddah KSA Medical Student IbnSina National College Jeddah KSA

Background: Postpartum depression is the most common psychological health problem among females;it begins after the birth of the child and can occur at any time during the first year of delivery. The COVID-19 pandemic is a novel virus that is highly infectious and has several negative psychological impacts on individuals globally. Aim: Coronavirus disease 2019 (COVID-19) has been reported to increase the incidence rate of depression. We investigated the prevalence rate and associated factors of postpartum depression (PPD) among women in Jeddah, Saudi Arabia, during the COVID-19 period, thereby attempting to determine whether and how COVID-19 affected PPD. Methods: This is a cross-sectional study that was conducted on women at one week to six months postpartum using an online questionnaire. SPSS program was used for analyzing data. Results: This study included 150 participated women;49.3% were in the age range of 25 - 34 years old. There were 30.7% reported being primigravida. Regarding the level of depression, there were 60.7% reported the presence of depression;the depression was affected by some demographics of females such as the education level (P = 0.021) and other factors related to the COVID-19 pandemic such as visiting the doctor during

关键词： PPD COVID-19 Prevalence Associated Factors

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轨道交通的自主化列车控制和自主化运营

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城市轨道交通研究 2018年第5期21卷 37-39,94页

作者： Ahmed Miske El hadrami 刘会明泰雷兹集团巴黎78140 上海电气泰雷兹交通自动化系统有限公司上海201206

简述了地铁中采用自主化列车控制及自主化列车运营技术的目的、实现方式,以及与目前成熟的无人驾驶系统的比较,并对不同自主化控制等级进行了定义。建议在目前CBTC(基于通信的列车控制)系统之上逐级引入自主化,最终实现从CBTC到全自主... 详细信息

简述了地铁中采用自主化列车控制及自主化列车运营技术的目的、实现方式,以及与目前成熟的无人驾驶系统的比较,并对不同自主化控制等级进行了定义。建议在目前CBTC(基于通信的列车控制)系统之上逐级引入自主化,最终实现从CBTC到全自主化的演进。

关键词：地铁自主化列车控制自主化运营

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