基于反射波、绕射波以及野外资料中的噪声在倾角域共成像点道集(Dip-angle Domain Common Image Gathers,DDCIGs)中的响应特征,本文实现了一种基于构造倾角约束的有效能量叠加成像方法。通过高斯束叠前深度偏移提取倾角域共成像点道集,...基于反射波、绕射波以及野外资料中的噪声在倾角域共成像点道集(Dip-angle Domain Common Image Gathers,DDCIGs)中的响应特征,本文实现了一种基于构造倾角约束的有效能量叠加成像方法。通过高斯束叠前深度偏移提取倾角域共成像点道集,在DDCIGs中识别有效的反射和绕射能量及低信噪比数据引起的噪声,并结合偏移剖面和探区地质信息划分出叠加区块,进行基于构造倾角约束的成像处理。Marmousi模型测试以及实际资料偏移结果表明:本文方法可以有效压制偏移噪声,提高剖面信噪比及增强剖面同相轴的连续性,具有很好的人机交互功能,便于在实际资料处理及参数选取中进行质量控制。展开更多
The RuCl2(PPh3)3/γ-Al2O3 catalyst modified by chiral reagent(1S,2S)-(-)-1,2-diphenyl-1,2-ethylenediamine((1S,2S)-DPEN) was investigated for the asymmetric hydrogenation of acetophenone and its derivatives.At the opti...The RuCl2(PPh3)3/γ-Al2O3 catalyst modified by chiral reagent(1S,2S)-(-)-1,2-diphenyl-1,2-ethylenediamine((1S,2S)-DPEN) was investigated for the asymmetric hydrogenation of acetophenone and its derivatives.At the optimized reaction conditions,85% conversion of acetophenone and 82%e.e.of(R)–α-phenyl ethanol were achieved over RuCl2(PPh3)3/γ-Al2O3 catalyst modified by(1S,2S)-DPEN.Furthermore,the results indicated that there was a synergistic effect between(1S,2S)-DPEN and KOH,which significantly accelerated the reaction rate and enantioselectivity.展开更多
文摘基于反射波、绕射波以及野外资料中的噪声在倾角域共成像点道集(Dip-angle Domain Common Image Gathers,DDCIGs)中的响应特征,本文实现了一种基于构造倾角约束的有效能量叠加成像方法。通过高斯束叠前深度偏移提取倾角域共成像点道集,在DDCIGs中识别有效的反射和绕射能量及低信噪比数据引起的噪声,并结合偏移剖面和探区地质信息划分出叠加区块,进行基于构造倾角约束的成像处理。Marmousi模型测试以及实际资料偏移结果表明:本文方法可以有效压制偏移噪声,提高剖面信噪比及增强剖面同相轴的连续性,具有很好的人机交互功能,便于在实际资料处理及参数选取中进行质量控制。
文摘The RuCl2(PPh3)3/γ-Al2O3 catalyst modified by chiral reagent(1S,2S)-(-)-1,2-diphenyl-1,2-ethylenediamine((1S,2S)-DPEN) was investigated for the asymmetric hydrogenation of acetophenone and its derivatives.At the optimized reaction conditions,85% conversion of acetophenone and 82%e.e.of(R)–α-phenyl ethanol were achieved over RuCl2(PPh3)3/γ-Al2O3 catalyst modified by(1S,2S)-DPEN.Furthermore,the results indicated that there was a synergistic effect between(1S,2S)-DPEN and KOH,which significantly accelerated the reaction rate and enantioselectivity.
