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乾安城区特殊观测系统设计及应用 总被引:3,自引:0,他引:3
吉林探区是一个勘探程度很高的地区,但在一些城区还存在许多地震空白区,采用三维线束状特殊观测系统可以较好地解决复杂地表条件下的地震采集工作。本文阐述了过乾安城区的特殊观测系统设计及其效果。由于城区内炮点缺失,必然造成小炮检距缺失,浅层资料不完整,采用正常观测系统难以达到采集目标。通过在城区加密接收线.可以有效弥补由于城区炮点缺失造成的小炮检距缺失,保证浅层资料的完整.同时可以有效增加覆盖次数,压制城区内的环境噪声;由于城区内小药量激发造成的深层反射能量较弱,因此采用在城外加密炮点,可以有效增加深层反射能量。该方法有利于城内、城外地震资料的衔接,有利于资料处理,便于野外施工,采用这种特殊观测系统可以取得较好的地震采集效果。 相似文献
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北京正负电子对撞机重大改造工程(BEPCⅡ)超导螺线管磁体(SSM)的控制阀箱是该磁体低温冷却系统的主要设备之一,用来分配、调节和控制超导磁体及其电流引线的冷却介质流量.低温下磁体超导导线及其冷却管会产生冷缩变形,变形量要在控制阀箱内给与补偿.同时阀箱内来流和回流氦冷却管线布置紧凑,需要判断是否要采取措施来补偿冷缩变形.本文运用有限元分析软件ANSYS对BEPCⅡ SSM控制阀箱内冷却管线的热应力进行模拟及分析,从而为该阀箱内冷却管线的设计及布局提供理论依据. 相似文献
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Meng Jia Song PanPan Wei MingShan Tian GuoHong Zhao Meng Zheng HongFei Hu GuangDa 《中国科学:技术科学(英文版)》2019,62(12):2184-2194
In the present study, a micro-scale solar organic Rankine cycle power generation system was developed. The system comprises of a solar collection system based on compound cylindrical Fresnel lens concentrator and an organic Rankine cycle power generation system integrated with a scroll expander. YD320 and R245 fa were used as the heat transfer fluid and the working fluid, respectively. The effects of the evaporation pressure, the degree of superheat, and the mass flow rate of the working fluid were analyzed to evaluate the solar collection efficiency, the electric power output, the thermal efficiency and exergy efficiency of the system. The results illustrate that both the increasing evaporation pressure and decreasing superheat degree have positive impacts on solar collection efficiency. The electric power increases as the evaporation pressure increases, while the thermal efficiency and the exergy efficiency decrease. However, the system overall efficiency decreases slowly due to the increase of solar collection efficiency. The electric power increases with the increment of the working fluid mass flow rate. The increasing mass flow rate has no visible impact on the thermal and exergy efficiencies of organic Rankine cycle subsystem, whereas a slightly increase of the thermal and exergy efficiencies of the integrated system. The electric power decreases with the increase of the superheat degree, whereas the thermal and the exergy efficiencies of the system increase. The system works more suitably with a higher degree of superheat for the small mass flow rate condition. 相似文献
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In this paper,a learning-based high-speed reconstruction system for ultra-low resolution faces is implemented using a software/hardware co-design paradigm.The hardware component working at 60 MHz contains a field programmable gate array,which is reconfigured to contain parallel processing units,and multiple memories to create parallel data.The hardware component effectively handles generating and sorting computationally intensive similarity metrics.This solves the processing speed problem in learning-based super-resolution reconstruction for ultra-low resolution faces.The system can reconstruct faces using 8 × 6,16 × 12,and 32 × 24 sized images,with 4 × 4,8 × 8,or 16 × 16 times magnification.The experimental results verify the effectiveness of our system in terms of both visual effect and low root mean square errors.The processing speed can be improved up to a maximum of 7900 times faster than a pure software implementation using C. 相似文献
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