XiaoMi-AI文件搜索系统
World File Search SystemGNFS
固体与液体视角
石墨烯纳米纤维（GNFS）是石膏行业有希望的添加剂。但是，它们对不同形式和配置的影响仍未得到探索。这项研究深入研究了不同类型的GNF添加剂在石膏层的特性中的EF效果。的发现表明，高表面区域（HS）GNF和液体低表面面积（LS）GNF会引起显着的微结构改变。虽然流变学仍然不受影响，但GNFS加速了石膏水合，导致快速设置。此外，这些GNF促进了硬石石的外观，从而产生了较短晶体和粘结较差的多孔基质。这些微结构变化显着降低了弯曲和抗压强度，损失约为25％。掺入表面活性剂通过限制晶体形成和生长进一步加剧了这些负面影响。因此，液体GNF添加剂表现出最低的性能和耐用性属性。虽然GNF可以将热性能提高到石膏板中，但它们的实现也可能导致机械强度和耐用性的显着降低。需要进行更多的研究来开发更兼容并且不会损害所得组件的性能的添加剂。有兴趣实施石墨烯基材料的建筑实践应集中于具有非常低比表面积（<100 m 2 /g）的粉末状添加剂，以最大程度地减少对强度和耐用性的毒性和负面影响。
海湾经济更新-COVID -19大流行和...
COVID-19 Coronavirus Disease Omantel Oman Telecommunications Company CPI Consumer Price Index OPEC Organization of the Petroleum Exporting Countries CRA Communications Regulatory Authority PIF Public Investment Fund DMO Debt Management Office PMI Purchasing Managers' Index du Emirates Integrated Telecommunications Company PPP Public-Private Partnership Etisalat Emirates Telecommunications Group Company Qnbn Qatar National Broadband Network FBP Fiscal Balance Program R0 Basic Reproduction Number FDI Foreign Direct Investment S&P Standard and Poor's FGF Future Generations Fund SAMA Saudi Central Bank FIFA Federation Internationale de Football Association SEZAD Special Economic Zone at Duqm GCC Gulf Cooperation Council SMEs Small and Medium Enterprises GDP Gross Domestic Product SOE State-Owned Enterprise GECF Gas Exporting Countries Forum STC Saudi Telecom Co. GFSM Government Financial Statistics Manual TCP/IP Transmission Control Protocol/Internet Protocol GNFS Goods and Nonfactor Services TEU Twenty-Foot Equivalent Unit GPON Gigabit Passive Optical Network TRA Telecommunications Regulatory Authority GRE Government-Related Enterprise UAE United Arab Emirates GRF General Reserve Fund UNCTAD United Nations Conference on Trade and Development ICT Information and Communication Technology VAT Value Added Tax ictQatar Qatar最高信息与通信技术理事会