核电秦山二期坝址开山工程爆破技术综述

结合大型开山工程的实际，总结了设备选型和施工，管理技术，从合理布设穿孔间距，防滚石下海，地平面保护等方面控制台阶爆破质量，并介绍了台阶爆破的安全控制措施。     

高稳定度的低能X射线管高压发生器的研制

介绍了一种用于X荧光分析中激发X射线管的低功率，高稳定度的高压发生器。采用逆程变压器(FBT)产生高压的方式和脉幅调制(PAM)稳压的方法，实现电路简单可靠，易小型化。同时，详细分析了其工作原理和主要电路，给出了试验数据。该高压发生器达到了设计要求，已投入实际应用多年，并体现出高稳定性和高可靠性的特点。     

大比例尺地形图航测成图航空摄影比例尺的选择

由生产实践的体会 ,探讨在进行大比例尺地形图测绘时 ,如何根据仪器装备、作业方法、地区类别及成图技术水平等等因素来确定航空摄影比例尺。     

北太平洋柔鱼生殖群体结构特征及繁殖生物学

根据2010年6～9月北太平洋柔鱼(Ommastrephe bartramii)渔业的现场调查资料,分析了北太平洋柔鱼胴长和体质量组成结构、性比、初次性成熟胴长、群体成熟度指数等等基础性的渔业生物学参数,阐述了该海域柔鱼的种群结构动态及繁殖生物学的特征。结果表明:各月北太平洋柔鱼生殖群体中雌性个体数量大于雄性,且雌性个体的平均胴长及体质量均显著大于雄性;生殖群体中雌、雄个体胴长与体质量关系的差异极为显著;相同胴长组下雄性个体的性成熟率要高于雌性;北太平洋柔鱼初次性成熟胴长ML50%♀为261.83 mm;ML50%♂为255.60 mm,雄性初次性成熟胴长显著小于雌性;东部海区(170°W～178°W)生殖群体比例及个体大小明显高于西部海区传统作业渔场(150°E～160°E)。判断东西部海区柔鱼是否是同一群体,还需要连续性的调查,进一步分析其成熟度随时间的变化及利用耳石信息分析技术来确定,还可以用微卫星技术测定分析以及标志放流法来判定,结论更为准确。     

A comparison of fishery biology of jumbo flying squid, Dosidicus gigas outside three Exclusive Economic Zones in the Eastern Pacific Ocean

Although many studies on the fishery biology of jumbo flying squid, Dosidicus gigas, have been conducted in the coastal areas within Exclusive Economic Zones (EEZs) of various countries due to its commercial and ecological importance, limited biological information is available from waters outside these EEZs. In this paper, we examined D. gigas fishery biology from waters outside Chilean, Peruvian and Costa Rican EEZs, based on the fishery data collected by Chinese jigging vessels during 2006 to 2010. The dominant mantle lengths of D. gigas were 350–450 mm, 250–400 mm and 250–350 mm outside Chilean, Peruvian and Costa Rican EEZs, respectively. Size structure analysis show that a medium-sized group existed mostly in the waters outside the Chilean and Peruvian EEZs, whereas a small-sized group occurred mainly in the waters outside the Costa Rican EEZ. The longevity of the squid outside the Costa Rican EEZ was less than 10 months, while most of those outside Chilean and Peruvian EEZs were about 1–1.5 years and very few large individuals were 1.5–2 years old. A higher percentage of mature individuals existed outside Costa Rican EEZ implying the region as a potential spawning ground, while lower proportions of mature squid outside the Peruvian and Chilean EEZs indicated that spawning may be occurring outside our study area. Spatial differences in sizes at maturity of the squid are thought to be result from different environmental factors especially different temperature and nutrition among the three areas. Stomach-content analysis showed that cannibalism was important in the diet of D. gigas. Stress generated by jigging may increase the incidence of cannibalism.     

航空重力起伏飞行中飞机姿态对测量数据影响分析

在航空重力飞行时,针对GT-1A航空重力系统在同一条测线中使用两种爬升率(1 m/s和2 m/s)进行起伏飞行。考察起伏飞行引起的飞机姿态变化对测量数据的影响,以及在航空重力测量中小坡度缓起伏作业的可行性,是笔者的研究目的。试验结果表明,所使用的两种爬升率对航空重力测量数据未有明显影响,GT-1A航空重力系统可以进行缓起伏飞行测量。