淮安地震台监测环境的保护

地震监测环境保护问题,一直是影响台站观测质量的重要因素。本文联系江苏省淮安地震台保护地震监测环境的实践,论述了有关法律、法规为地震监测环境保护提供了强有力保障的意义;地震台站积极宣传地震监测环境保护的重要性;以及依靠当地政府及其管理部门共同做好地震监测环境保护工作的必要性。同时,针对保护地震监测环境中遇到的问题,提出了几点建议。     

环境监测站实施国家室认可的可行性探讨

介绍了国家实验室认可机构的建立，资质以及国家实验室认可准则的依据等概况。阐述了各级环境监测站在环境监测中实施ISO标准的必要性，实施国家实验室认可的可行性，以及相应的操作流程，简略评述了实施国家实验室认可对环境监测站的作用。     

汽车加油加气合建站的环境风险事故后果评价

结合具体建设项目，对汽车加油加气合建站的环境风险事故后果进行了分析，对汽车加油加气合建站的环境风险后果评价方法作了一定探讨，并对该类建设项目风险评价工作中容易忽视的问题提出了见解。     

论地震台站的管理

本文主要介绍了地震系统中最前沿的单位——地震台站，重点阐述了北京市地震局延庆地震台的成绩、管理思路和经验，对全国地震台站的工作具有一定的参考学习意义。     

浅谈石油化工企业环境监测站设计

叙述了在进行石油化工企业环境监测站设计时，在总图位置，建筑以用工程设置，设备与备及人员编制几应注意的问题。     

数字地磁资料在地震预测中应用研究

本文应用天津市静海数字地磁资料进行了震例研究，初步结果表明：震前地磁脉动转换函数，有明显的短临异常，且有典型的异常形态，数字地磁资料预报地震确是很有前途的地震短临预报新方法。地磁脉动预报地震是很有前途的地震预报新方法，它将会使以磁报震的研究工作取得新的进展。     

从服务于环境管理的角度谈大城市区级监测站的发展

从环境监测服务于环境管理的角度出发,阐述了大城市区级监测站要在恶劣的生存环境中求得发展,就必须正确处理环境监测与环境管理的关系,克服自身的不足,加强能力建设,充分发挥它的技术支持、技术监督和技术服务职能。     

"通讯控制软件"在天津市地震前兆台网应用实例

"通讯控制软件"是数字化地震前兆台站、前兆中心的核心软件.在天津数字化地震前兆台网建设与运行中,与"通讯控制软件"有关的重要技术问题,主要包括前兆中心无法收取台站仪器数据、<通讯控制软件>自动收数、DFG-B型智能测汞仪原始数据接收与转换等问题,在中国地震局地壳应力研究所专家的指导下,逐一加以解决.本文着重对这些技术问题加以总结提炼.     

Indirect genetic benefits of polyandry in a spider with direct costs of mating

The search for the evolutionary explanation of polyandry is increasingly focused on direct and indirect selection on female resistance. In a polyandrous spider Stegodyphus lineatus, males do not provide material benefits and females are resistant to remating. Nevertheless, polyandrous females may obtain indirect genetic benefits that offset the costs associated with multiple mating. We manipulated the opportunity for females to select between different partners and examined the effect of female mating history (mated once, mated twice, or rejected the second male) on offspring body mass, size, condition, and survival under high- and low-food rearing regimens. We found that multiple mating, not female choice, results in increased female offspring body mass and condition. However, these effects were present only in low-food regimen. We did not find any effects of female mating history on male offspring variables. Thus, the benefits of polyandry depend not only on sex, but also on offspring environment. Furthermore, the observed patterns suggest that indirect genetic benefits cannot explain the evolution of female resistance in this system.     

Close-range acoustic signaling and mate choice in Hawaiian crickets (Gryllidae: Laupala)

Evolution of the mate recognition system (MRS) can play a central role in animal speciation. One dramatic consequence of changes in the MRS is the failure of individuals from divergent lineages to successfully court and mate, thereby reducing gene flow between these groups. Here, we test the role of an acoustic mating signal on mate choice in a Hawaiian cricket genus (Gryllidae: Laupala). Speciation in Laupala is proceeding at an extremely rapid rate, apparently driven by divergence in aspects of the mate recognition system, most conspicuously the pulse rate of male calling song. Previous studies demonstrate that females prefer the pulse rate of a conspecific male’s song when perceived at long range, in laboratory phonotaxis trials. In this study, we examined mate choice in two species that differ dramatically in pulse rate: Laupala paranigra and Laupala kohalensis. We tested the female’s preference in both species for pulse rates at close range, by providing females an opportunity to mate with hybrid males producing a range of intermediate pulse rates. Results of our study demonstrate that while strong behavioral barriers exist between these two species, variation in the pulse rate of male calling song did not predict female mate choice at close range. These results suggest a more complex architecture to mate recognition in Laupala than previously hypothesized.