影像导引肝脏恶性肿瘤多模态消融治疗技术专家共识

影像导引肝脏恶性肿瘤多模态消融治疗是以医学影像技术为导引，在冷冻消融与热消融交替转换过程中，通过对病灶区温度精准控制和消融过程定量规划，彻底破坏原位肿瘤细胞及其循环系统，同时最大程度释放活性肿瘤抗原，从而达到控制肝脏恶性肿瘤复发转移的目的。为规范肝脏恶性肿瘤多模态消融治疗技术操作，便于不同层级医院开展实施，确保医疗安全和临床疗效，中国抗癌协会肿瘤介入学专业委员会和上海市抗癌协会实体肿瘤聚焦诊疗专业委员会组织国内肿瘤治疗领域的多学科专家共同参与，认真讨论，最终达成本共识。     

Design of 25 Gbit/s half-rate CDR with 1:2 demultiplexer for 100 GbE optical interconnects

A 25 Gbit/s clock and data recovery(CDR) circuit with 1:2 demultiplexer for 100 Gbit/s Ethernet(100 Gb E) optical interconnects has been designed and fabricated in Taiwan Semiconductor Manufacture Company(TSMC) 65 nm complementary metal-oxide-semiconductor(CMOS) technology. A novel quadrature voltage-controlled-oscillator(QVCO) structure adopts two pairs of transconductance cell and inverters to acquire rail-to-rail output swing. A half-rate bang-bang phase detector adopts four flip-flops array to sample the 25 Gbit/s input data and align the data phase, so the 25 Gbit/s data are retimed and demultiplexed into two paths 12.5 Gbit/s output data. Experimental results show that the recovered clock exhibits a peak-to-peak jitter of 7.39 ps and the recovered data presents a peak-to-peak jitter of 7.56 ps, in response to 312-1 pseudorandom bit sequence(PRBS) input. For 1.2 V voltage supply, the CDR circuit consumes 92 m W(excluding output buffers).     

2019 Annual Report of China''s Paper Industry

According to the 2019 annual report of China’s Paper Industry by China Paper Association (CPA), in 2019, there were about 2700 paper & board manufacturers in mainland China. The total production of paper & board was 107.65 million tons, increased by 3.16% and the total consumption was 107.04 million tons, increased by 2.54% compared with 2018, respectively, paper & board per capita consumption was 75 kg (counted in 1.4 billion people). This report includes a rather elaborate analysis of the China’s paper industry and is provided for the readers’ reference.     

提高近红外视象管制靶工艺稳定性研究

根据近红外视象管特点,设计了专用的靶面蒸涂设备,改进了靶面加热方法、蒸发舟的形状以及工作气流的控制方法,确定了一种稳定性较好的工艺,使制靶成品率大大提高,整管成品率因此从过去的5%提高到30%。     

绳索取心钻杆螺纹锥度与强度关系及应力研究

通过一系列室内拉伸、扭转及光弹应力试验，研究了绳索取心钻杆螺纹锥度与强度的关系及其应力分布规律。     

浅谈ZY5000／14／23型掩护式液压支架的设计

总结大同煤矿集团公司ZY5000／14／23型二柱掩护式液压支架设计的经验,着重阐述了针对近距离煤层“两硬”条件设计支架的技术思路,介绍了支架的性能、结构特点及生产使用情况。     

特厚坚硬高瓦斯大断面综放切眼锚网锚索耦合支护实践

根据现场工程地质条件调查分析、岩石物理力学特性和特厚坚硬高瓦斯大断面综放切眼围岩力学变形机制及其转化研究,提出了特厚坚硬高瓦斯综放工作面巷道锚网锚索耦合支护设计方案。根据试验结果,证明在白芨沟矿采用锚网锚索耦合支护技术在技术上是可行的、安全上是可靠的、经济上是合理的。     

液晶显示技术的进展

通过实地考察,介绍美国、日本和欧洲的液晶显示技术,着重叙述有源矩阵液晶显示技术、制备关键工艺、新型液晶显示器件的开发以及夏普公司在LCD领域中的领先水平.