膏盐岩-碳酸盐岩共生层系岩石微相及储层特征——以阿布扎比B油田侏罗系Arab组为例

为探究膏盐岩–碳酸盐岩共生层系强非均质性问题,基于岩芯及测井资料,探究阿布扎比B油田Arab组岩石微相类型,分析各类微相的储层特征及优质储层主控因素。Arab组可识别出12种微相类型(MF1~MF12),微相类型及组合指示其为局限–蒸发背景下萨布哈潮坪–潟湖–障壁滩沉积体系。微相类型控制储层品质,其中MF2及MF9~MF12孔喉较粗,连通性好,孔隙度和渗透率较高,是储层发育有利微相类型。MF2和MF10发育白云岩储层,储集空间以晶间孔、残余粒间孔及粒内溶孔为主;MF9,MF11和MF12发育颗粒灰岩储层,储集空间以粒间(溶)孔、铸模孔及粒内溶孔为主。相对海平面的震荡性变化导致各沉积相带在纵向上的有序叠置,不同沉积相带之间或同一沉积相带内微相类型及成岩作用的差异性是Arab组储层强非均质性的根本原因。障壁滩和潮上带是优质储层发育的有利相带,其中障壁滩相优质储层原生粒间孔保持较好,并叠加显著的早期暴露溶蚀,导致次生孔隙的产生和孔隙结构的改善;潮上带优质储层的发育受控于早期白云石化和准同生溶蚀作用,白云石化改善孔隙结构,有利于早期孔隙保存,分散状硬石膏的早期溶蚀产生大量次生孔隙,显著地改善了储层物性。

Enhancement of the Antigenotoxic and Antioxidant Actions of Eugenol from Spice Clove and the Stabilizer Gum Arabic on Colorectal Carcinogenesis

Spices are defined as any aromatic condiment of plant origin used to alter the flavor and aroma of foods. Besides flavor and aroma, many spices have antioxidant activity, mainly related to the presence in cloves of phenolic compounds, such as flavonoids, terpenoids and eugenol. In turn, the most common uses of gum arabic are in the form of powder for addition to soft drink syrups, cuisine and baked goods, specifically to stabilize the texture of products, increase the viscosity of liquids and promote the leavening of baked products (e.g., cakes). Both eugenol, extracted from cloves, and gum arabic, extracted from the hardened sap of two species of the Acacia tree, are dietary constituents routinely consumed virtually throughout the world. Both of them are also widely used medicinally to inhibit oxidative stress and genotoxicity. The prevention arm of the study included groups: Ia, IIa, IIIa, Iva, V, VI, VII, VIII. Once a week for 20 weeks, the controls received saline s.c. while the experimental groups received DMH at 20 mg/kg s.c. During the same period and for an additional 9 weeks, the animals received either water, 10% GA, EUG, or 10% GA + EUG by gavage. The treatment arm of the study included groups Ib, IIb, IIIb e IVb, IX, X, XI, XII). Once a week for 20 weeks, the controls received saline s.c. while the experimental groups received DMH at 20 mg/kg s.c. During the subsequent 9 weeks, the animals received either water, 10% GA, EUG or 10% GA + EUG by gavage. The novelty of this study is the investigation of their use alone and together for the prevention and treatment of experimental colorectal carcinogenesis induced by dimethylhydrazine. Our results show that the combined use of 10% gum arabic and eugenol was effective, with antioxidant action in the colon, as well as reducing oxidative stress in all colon segments and preventing and treating genotoxicity in all colon segments. Furthermore, their joint administration reduced the number of aberrant crypts and the number of aberrant crypt foci (ACF) in the distal segment and entire colon, as well as the number of ACF with at least 5 crypts in the entire colon. Thus, our results also demonstrate the synergistic effects of 10% gum arabic together with eugenol (from cloves), with antioxidant, antigenotoxic and anticarcinogenic actions (prevention and treatment) at the doses and durations studied, in the colon of rats submitted to colorectal carcinogenesis induced by dimethylhydrazine.

Effect of Gum Arabic from Acacia senegal var. kerensis as an Improver on the Rheological Properties of Wheat Flour Dough

Dough improvers are substances with functional characteristics used in baking industry to enhance dough properties. Currently, the baking industry is faced with increasing demand for natural ingredients owing to increasing consumer awareness, thus contributing to the rising demand for natural hydrocolloids. Gum Arabic from Acacia senegal var. kerensis is a natural gum exhibiting excellent water binding and emulsification capacity. However, very little is reported on how it affects the rheological properties of wheat dough. The aim of this study was therefore, to determine the rheological properties of wheat dough with partial additions of gum Arabic as an improver. Six treatments were analyzed comprising of: flour-gum blends prepared by adding gum Arabic to wheat flour at different levels (1%, 2% and 3%), plain wheat flour (negative control), commercial bread flour and commercial chapati flour (positive controls). The rheological properties were determined using Brabender Farinograph, Brabender Extensograph and Brabender Viscograph. Results showed that addition of gum Arabic significantly (p chapati. These findings support the need to utilize gum Arabic from Acacia senegal var. kerensis as a dough improver.

The Enforcement of Occupational Safety and Health Requirements in Public and Private Sectors in the Emirate of Abu Dhabi, the United Arab Emirates

Research Problem: In Abu Dhabi, limited implementation of OSH Regulations contributes to the general unawareness among employees and workers about occupational hazards and safety measures, resulting in slow responsiveness toward enforcement measures and a lack of self-regulatory approaches within companies. Purpose: The purpose of this study is to examine the implementation methods practised in Abu Dhabi with those in developed countries with established OSH regulatory bodies. Methodology: Qualitative and quantitative research methods were employed to gather primary research data. Workers from various industries in Abu Dhabi were sampled on purpose and asked to respond to questionnaires and interviews on OSH protocol awareness and implementation, and circumstances of workplace incidence. Results: The findings of this study showed that the enforcement of OSH requirements in UAE positively correlated to a reduction in the rate of work-related injury and improved business performance. The quantitative research data showed that the energy sector had the highest score (15) while the tourism sector had the lowest score (5.3) in occupational health systems and improvements in business efficiency and productivity. Implications: The outcomes of this study shed light on the importance of implementing OSH Guidelines for companies to empower their safety managers to fully enforce OSH requirements in their organisations. In conclusion, effective OSH enforcement requires cooperation between general workers and OSH managers and facilitation from business owners.

Tigris, Euphrates, and Shatt Al-Arab River System: Historic and Modern Attempts to Manage and Restore Iraq’s Lifeline

In Iraq, the principal rivers are the Tigris, Shatt Al-Arab and Euphrates. From their headwater sources in the mountains of eastern Türkiye, these rivers descend through valleys and gorges and flow into the uplands of Syria and northern and central alluvial plain of Iraq. The Euphrates and Tigris Rivers confluence to form the Shatt Al-Arab river at Al-Qurnah which flows into the Persian Gulf. From sources in the Zagros Mountains other tributaries join the Tigris from the east. The Tigris and Euphrates rivers flow in a southeastern direction through the central plain and discharge into the Mesopotamian Marshes, which include permanent marshes, lakes, and riparian habitat. The rivers and their tributaries drain an area of 879,790 km2 which includes almost the entire area of Iraq as well as land in Syria, Türkiye, Kuwait and Iran. The region has historical importance as part of the Fertile Crescent region and where Mesopotamian civilization first emerged. The post war reconstruction efforts in the Yusifiyah township, an important food production region for Baghdad, illustrate the importance of these water resources. In addition, the advent of soil tunnels by Iraqi insurgents within the riverine corridors will make reconstruction of this resource more complex. The primary objectives of this study are to assess lessons learned, manage, and restore the Tigris, Euphrates, and Shatt Al-Arab river system lifeline in Iraq.

Karun and Shatt Al-Arab River System: Historic and Modern Attempts to Manage Iran’s Lifeline

The Islamic Republic of Iran’s principal rivers are the Karun and Shatt al-Arab. The Karun River has a 950 km length. The Karun River starting point is the convergence of the Amand, Kuhrang, and Bazoft rivers. From their headwater sources in the mountains of eastern Iran, these rivers descend through valleys and gorges and flow into the plains of Iran. The Shatt al-Arab River drains an area of 879,790 square kilometers which includes land in Iran, Syria, Türkiye, Kuwait, and Iraq. The Karun joins Shatt al-Arab 110 km downriver from the confluence of the Euphrates and Tigris Rivers and flows 85 km into the Persian Gulf. The Karun river flows in a southwestern direction through the central plain and provides about 10 per cent of the water balance of Iran’s largest wetland, the Shadegan, which includes permanent marshes, lakes, and riparian habitats. The article summarizes a vast array of publications on the stated topic and this civilizationally important region in order to draw additional attention to its interdependent environmental, economic and political problems the successful resolution of which is only possible with the participation of the entire research community.

Artificial Intelligence Model to Detect and Classify Arabic Dialects

The Arabic Dialect (AD) detection method involves analyzing the matching sound wave for various characteristics that identify the speaker’s dialect. Among these features are accent, intonation, stress, vowel length, vowel type, and other acoustic characteristics. Data from different speakers of different dialects is usually used in training machine learning algorithms. Based on this data, an algorithm is created to accurately identify the speaker’s dialect. Arabic dialects can be detected and classified using several models and techniques available in literature. Various models have been proposed from different perspectives. Therefore, this paper discussed different studies about AD for building an understanding of conceptual deep learning model to detect and classify Arabic dialects. The model captured the semantic, syntactic, and phonological characteristics of these dialects using Convolutional Neural Networks (CNNs) and Recurrent Neural Networks (RNNs). The proposed model consists of six stages: Natural Language Processing (NLP) stage, feature engineering techniques, neural networks, language models, optimization techniques, and evaluation techniques. Each stage of the proposed model has several techniques that can be used to detect and classify AD. The accuracy and capability of the proposed model will be performed in the future work.

阿联酋高等教育在地国际化研究

高等教育在地国际化是全球化时代各国培养国际人才的创新性实践模式。处于经济转型期的阿联酋,为满足大量外籍人员接受高等教育的需求、促进高等教育机会性别平等、打造技术劳动力型区域教育枢纽,积极推进高等教育在地国际化。阿联酋通过吸引世界知名大学设立分校,引进国外优质教育资源,促进了其高等教育质量和国际知名度的提高,也提升了学生的国际化水平,推动了经济的发展及转型,但也存在着境外分校对阿联酋本土文化形成冲击、对境外分校的质量监管不到位等问题。借鉴其经验,我国中外合作办学的优化和在地国际化的推进,需要进一步完善对中外合作大学的质量监管体系、正确处理好国际化与本土化之间的关系。

喷雾干燥法制备肉豆蔻精油微胶囊及表征

以阿拉伯胶和麦芽糊精为复合壁材,以肉豆蔻精油为芯材,采用喷雾干燥法制备微胶囊,并对其形态、释放性和吸湿性进行表征。结果表明,以包埋率为指标,经Box-Behnken Design响应面实验优化的微胶囊制备工艺为壁材浓度2.01%、芯壁比0.92、进风口温度185.56℃,此时预测包埋率为79.53%。3个因素的影响程度为芯壁比>进风口温度>壁材浓度。包埋后的微胶囊呈规则饱满的球形,粒径分布于5~9μm,室温下在水中释放性良好,并且贮藏时具有一定的吸湿性。

波斯湾盆地Arab组—Hith组成藏组合地质特征及油气成藏规律

Arab组—Hith组成藏组合为波斯湾盆地重要的成藏组合之一,侏罗系Arab组碳酸盐岩储集层和Hith组层间硬石膏是成藏组合的基本储盖要素。侏罗系Tuwaiq Mountain组、Hanifa组和Diyab组烃源岩为该成藏组合提供了绝大部分的烃类,烃源岩有机质含量高,在始新世中晚期大面积成熟生油,此时阿尔卑斯构造运动Ⅰ幕已形成众多圈闭,油气生成之后即可直接运移至圈闭中。Arab组储集层分布面积广,以颗粒灰岩为主,成岩阶段早期原生孔隙破坏少,后期普遍经受白云岩化和淋滤作用,储集层物性优越。Hith组硬石膏厚度大,分布面积广,遭受断层的破坏程度较弱,油气很少能穿越它进入上部储集层,仅在相变尖灭带或大型断裂处造成油气垂向逸散。由于侏罗系烃源岩生成的油气大多属近源成藏,油气侧向运移的距离短,最有潜力的区域为侏罗系台内盆地分布区,Arab组储集层的油气丰度主要取决于Hith组盖层的封盖能力。

蓝莓花色苷聚电解质复合物制备及降脂活性比较

为提高蓝莓花色苷的稳定性和活性,该研究利用大豆分离蛋白和阿拉伯胶构建大豆分离蛋白/阿拉伯胶聚电解质负载蓝莓花色苷体系并进行表征,并对复合物的细胞降脂活性进行了较研究。在超声功率180 W、壁材质量比为10:4、壁芯质量比为10:1、包埋时间为1.0 h的条件下,得到包埋率为66.05%,ζ-电位为1比9.00 mV,平均粒径为2.53μm的不规则球状物,此条件下制备的复合物,在模拟胃液和肠液中2 h的释放率为71.05%、61.04%,比游离花色苷降低了19.16%、30.50%。通过HepG2细胞模型,检测TG、TC、SOD、MDA含量,结果发现,复合物的降脂活性优于游离花色苷,当花色苷质量浓度在50μg/mL时,复合物组的TC、TG、MDA含量为0.19 mmol/g prot、0.21 mmol/g prot、10.58 nmol/mg prot,比游离花色苷组下降9.70%、14.21%、17.12%;SOD酶活力为25.25 U/mg prot,比游离花色苷组提高9.54%。表明大豆分离蛋白和阿拉伯胶可高效结合花色苷,形成稳定的复合物,并具有良好的体外缓释效果,且复合物降脂活性高于游离花色苷。该研究可为后续开发降脂产品提供理论依据。

族群经济对多元族群社区治理的影响:理论依据与机制分析

多元族群社区治理是当前最具前沿性、挑战性和国际意义的社区治理研究内容,是社会治理创新的突破口。以往研究主要聚焦社区治理对族群经济的影响,鲜少研究族群经济对社区治理的影响。文章以义乌阿拉伯族群为研究对象,基于群际接触理论,将族群经济作为解析与洞察社区组织结构、社区治理模式、社区文化融合以及社区政策环境的独特变量。研究发现,义乌族群经济的发展为群际接触创造了平等地位、共同目标、群际合作以及权威支持四大条件,激发了多元族群社区管理的创新改革,形成了“多元共治、以外治外、文化互嵌、制度保障”的多元族群社区治理体系。义乌多元族群社区治理为优化我国移民政策、管理外籍商业活动和治理多元族群社区提供了借鉴和参考。

净零之路:海湾阿拉伯国家气候政策新动向及其地缘效应

近年来,海湾阿拉伯国家气候政策发生重大调整,一改以往全球反对者身份,相继发布净零目标和气候行动愿景。全球净零提速和海湾阿拉伯国家气候行动直接影响全球能源转型和清洁能源供应链形成,甚至引发新一轮全球能源博弈。此外,向清洁能源价值链的平行过渡是海湾阿拉伯国家净零举措的深层战略考量。新价值链的形成可能催生新的相互依存,并进一步导致域内外国家围绕净零路径展开复杂激烈的地缘争夺。

中国与非洲阿拉伯国家的卫生发展合作研究

非洲阿拉伯国家长期整体医疗水平不高,每个国家面临的医疗卫生问题背后成因各不相同,深受各自社会状况的影响。医疗卫生情况具有多样性、复杂性和复合性的特点。在当前全球一体化深入发展的背景下,世界各国人民的命运紧密相连,医疗卫生问题越来越受到国际社会的重视。本文聚焦于以非洲阿拉伯十国为中心的中阿卫生发展合作,从非洲阿拉伯国家医疗卫生治理的问题与特点出发,深入探讨中国参与非洲阿拉伯国家卫生发展合作的理论基础与现实意义。文章系统性地回顾了中国与非洲阿拉伯国家60年卫生发展合作历程,并特别关注双方医疗合作中的重点领域——中医药在卫生发展合作中的实践情况,旨在积极探索双方卫生发展合作支持途径,为中阿卫生发展合作的现状和未来发展提供积极建议。

“双一流”背景下高校图书馆服务外语学科的路径探究——以北京大学阿拉伯语学科为例

“双一流”建设是当下许多高校的中心任务,高校图书馆要围绕这一中心,从服务一流学科建设的视角去审视和提高服务质量。文章以北京大学的阿拉伯语学科为例,基于该学科的发展现状和定位,从学科分馆建设、国际合作项目建设、文献资源建设以及学科馆员服务若干层面,分析北京大学图书馆围绕该学科建立的“一体两翼”服务模式,并针对目前的服务现状提出改进措施,以期为高校图书馆开展外语学科服务、助力“双一流”建设提供借鉴。

藏医《四部医典》和阿医《阿维森纳医典》中的尿诊比较

《四部医典》与《阿维森纳医典》分属藏医和阿拉伯医学经典,两部经典都把尿诊视为诊断疾病的方法之一。文章以《四部医典》与《阿维森纳医典》中尿诊文献作为背景和基础,通过《四部医典》和《阿维森纳》的尿诊理论背景、尿诊时间、尿诊方法等方面进行比较,分析总结异同之处。讨论《四部医典》和《阿维森纳医典》中尿诊的各自特点,探索新的历史时期藏医和阿拉伯医学的结合点和交叉点,为提出传统尿诊的未来发展思路提供理论依据和研究线索。

阿拉伯语教学中跨文化思辩能力培养研究

世界大变局中的社会需求对阿拉伯语专业学生的综合能力提出了新要求。跨文化交际能力和思辩能力作为外语专业学生亟需且较缺乏的两种能力,有其理论上的共义域,也有着实践上的共通性,这使得跨文化思辩能力的培养,能够通过阿语课堂教学中的语言交际行为有效串联起来。其中培养目标、教学模式、教学原则以及语言教学法几个层面的上下联动和彼此呼应尤为重要。

花椒油微胶囊工艺优化

该研究以阿拉伯胶与辛烯基琥珀酸淀粉钠为复配壁材,采用喷雾干燥技术制备花椒油微胶囊,应用响应面试验法,以包埋率与花椒精油收率为响应值,以壁材占比、复配壁材比与喷雾干燥出风温度为响应因子,建立了二次回归方程模型,得到制备花椒油微胶囊的最佳工艺参数:壁材占比为40%,复配壁材比(阿拉伯胶∶辛烯基琥珀酸淀粉钠)为1∶1,喷雾干燥出风温度为90℃,得到的花椒油微胶囊包埋率为93.54%,花椒精油收率为95.35%,并且在稳定性与感官评价方面均优于其他花椒产品。

区域治理与全球治理互动视角下阿盟与联合国的合作实践

阿盟与联合国的合作体现了区域治理与全球治理相互协调与联通的特点。几十年来,两大组织积极推动关系的发展,建成并着力深化合作伙伴关系,共同探索(非)传统安全和经济社会发展方面的治理合作。在传统安全领域,阿盟与联合国相互承认对方在国际和地区安全事务中的重要性,阿盟坚持在相关事务中与联合国保持接触和协调,并尝试采取一致行动;在非传统安全领域,联合国以实际行动支持阿盟应对恐怖主义、难民问题、环境与气候威胁等,帮助阿盟提升综合治理能力;经济社会发展治理领域是阿盟与联合国开展合作最早、合作范围最广以及合作成果最显著的领域,双方通过大量合作项目的执行,推动了阿拉伯地区的发展。但阿盟对区域自决权的维护、阿盟成员国间相互竞争导致组织内部难以协作、地区问题自身的复杂性以及外部大国干扰等因素对阿盟与联合国的合作实践产生了消极影响,严重制约了两大组织间合作关系的深化空间。

阿拉伯国家绿色经济:发展、困境与中国角色

进入21世纪后,绿色经济成为国际社会的主流话题,多个阿拉伯国家相继提出了绿色经济转型的战略目标。阿拉伯国家绿色转型过程中的决定因素主要由其作用主体、金融投资、绿色科技及绿色理念构成。在这些因素的主导下,近年来多个阿拉伯国家在绿色经济发展上取得了长足进展,但也面临着转型困境,需要解决国家优先事项议程、产业平衡及中小企业发展滞后、技术转让需求增加和技术创新能力不济、可持续发展财政拨款和社会融资贫乏等问题。中国在阿拉伯国家绿色转型过程中扮演了重要角色,其绿色经济发展的经验与策略为阿拉伯国家提供了较好的示范作用,主要体现在战略应和、技术转移、对外投资和智库交流四个方面。伴随阿拉伯国家绿色经济转型的不断深入,中国与阿拉伯国家在该领域的合作也呈现出前所未有的机遇。