基于同步变距的输变电线路在线监测WSN路由协议研究

基于先进传感、信息通信的输变电设备运行状态在线监测技术已成为电力系统的发展趋势.输电线路状态在线监测网络具有链状、数据传输量大和传输距离长等特点,能量热区问题显著.为均衡输电线路在线监测中无线传感器网络的能量消耗,提出了一种基于同步变距的全局能量均衡路由算法EBRA-SVD.采取多个子网络方式,缩短数据传输距离,从而缓解长距多径损耗而产生的"能量热区"问题.仿真显示,EBRA-SVD可有效均衡网络能耗,提升网络寿命.     

三峡库区澎溪河流域不同高程消落带土壤磷形态特征

研究了三峡库区澎溪河流域落干期不同高程消落带土壤不同磷形态分布特征,并分析了各形态磷与土壤理化性质之间的相关性。结果表明,澎溪河流域消落带土壤TP含量均值为599.00 mg/kg,消落带土壤TP、IP含量均沿高程逐渐下降。消落带土壤活性磷（Ac-P）含量明显低于180 m的岸边土壤,155,145 m消落带土壤Ac-P含量低于165 m消落带土壤,与140 m沉积物中Ac-P含量相近,表明频繁的干湿交替会加剧消落带Ac-P的流失。消落带土壤TP、IP和Ca-P均与pH值表现出显著的负相关关系,表明pH对土壤磷形态的含量有着重要影响;OM与Or-P表现出极显著的正相关性,表明有机质的输入在一定程度上会影响Or-P的含量。     

高炉热储备区温度对煤气利用率的影响

研究了高炉热储备区内温度与煤气利用率的关系.结合热力学和实际情况,热储备区内只发生氧化亚铁的还原.因此需要利用吉布斯自由能计算和单界面未反应核模型对热储备区内还原反应进行热力学和动力学分析.结果表明:只有在H₂+H₂O体积分数小于0.3时降低热储备区温度才能提高煤气利用率.从1273K降温到1223K,氢气还原速率降低得比CO还原速率降低得多,说明温度对氢气还原的影响更大.对一般高炉来说,炉料在热储备区中还原所需的时间比其停留时间长或接近,说明热储备区内的还原反应没有达到平衡,降低温度不利于提高煤气利用率.     

基于条元法的异步轧制金属三维塑性变形分析

采用条元法分析了异步轧制条件下金属在变形区内的变形情况,建立了适用于异步轧制的轧制压力公式及中性点坐标公式,并在计算摩擦力时考虑了粘着区的存在。通过仿真分析,得到了异步轧制条件下变形区内摩擦力的分布规律及应力、应变的分布规律,最后分析了不同速比对等效应力的影响以及不同入口厚度对轧制压力的影响。     

Three noteworthy mirine plant bugs inhabiting subalpine zones of the Nepalese Himalayas (Hemiptera: Heteroptera: Miridae: Mirinae)

Three unique mirine plant bugs inhabiting typical subalpine vegetation in the Nepalese Himalayas are documented, with their confirmed plant associations. A new genus and new species, Khumbumiris schwartzi, is diagnosed and described, based on a male specimen collected from Abies spectabilis; two additional new species, Lygocoris laligurans (associated with Rhododendron shrubs) and Phytocoris sagarmathanus (Abies spectabilis), are also described. Images of the habitats and live individuals are also provided. The tribal placement of Khumbumiris is discussed in detail.

http:/zoobank.org/urn:lsid:zoobank.org:pub:54E31614-3262-4BF8-8BBB-F81893AF41D2     

The landing zone – Ground for model transfer in chemistry

This essay proposes a new notion - the landing zone - in order to identify conceptual features that allow modelers to transfer mathematical tools across disciplinary borders. This discussion refers to the transferable models as ‘templates’. Templates are functions, equations, or computational methods that are capable of being generalized from a particular subject matter. There are formal and conceptual prerequisites for the transfer of a template to a new domain. A landing zone is an ontology that contributes to the satisfaction of these conditions for successful transfer. This paper presents a case study on a model in chemistry - the Quantum Theory of Atoms in Molecules (QTAIM) - that makes use of transferred templates from physics - the virial theorem and the wave function. The landing zone in this case is a new ontological notion, that of the topological atom, which prepares ground for the use of the virial theorem and the wave function in chemistry. The virial theorem requires that there exists in-principle stability to the system that it represents, and the wave function requires transformation in its representation that is justified. The ontology of QTAIM - the landing zone for these templates - grounds the scientific use of these templates in the context of chemistry.     

Ants feeding on anal exudate from tortricid larvae: a new type of trophobiosis

A new type of trophobiosis between tortricid larvae of a hitherto unknown genus and species, and various ant species of the subfamilies Formicinae, Dolichoderinae and Myrmicinae, was found in Malaysia. The larvae live in silken shelters fixed to the leaves of bamboo. In response to mechanical stimuli from the ants, they discharge from the anus a liquid containing sugar and amino acids and/or protein. The tortricid is described as Semutophila saccharopa gen. nov., sp. nov.; a second species, S. susurra sp. nov., is described from New Guinea.     

Benthic foraminiferal δ~(13)C minimum events in the southeastern Okhotsk Sea over the last 180 ka

A total of six d13C minimum events,i.e.,VI,V,IV,III,II,and I,were observed via a stable carbon and oxygen isotope analysis of infaunal benthic foraminifera Uvigerina spp.in gravity core OS03-1 in the southeastern Okhotsk Sea over the last 180 ka.These events occurred at112–109,102–90,85–76,57–54,44–40,and 17–10 ka BP.The largest negative excursions reached 2.5%in event V and were greater than 1%in the other events.We proposed that all d13C minimum events were caused by the increase in sea surface water productivity,the weakened formation of Okhotsk Sea intermediate water,and the enhancement of the oxygen minimum zone.The negative excursions were unaffected by methane hydrate destabilization and subsequent methane release based on the results obtained by using archaeal lipid markers.     

高新区管委会在安全生产与创建本质安全型城市中的作用

针对高新区管委会在安全生产与创建本质安全型城市中的作用,论述了企业落实安全生产主体责任、抓好安全生产基础工作、深化安全教育和注重隐患整改与治理等几个方面的问题,提出了针对性的建议。     

镇保隧道左幅进口洞口段变形及坍方处治方案

镇保隧道左幅进口进洞前后，洞口边仰坡变形开裂、洞内右侧初期支护大范围变形侵界、浅埋段地表沉降开裂滑塌及大坍方，文章阐述了如何对以上情况进行处理。