A new latency-reducing and energy-efficient protocol for the wireless sensor network

This paper introduces a new protocol routing medium access control (RMAC) that integrates the routing and medium access control (MAC) layer protocol. They can both reduce latency and save energy in the wireless sensor network (WSN) while most others propose protocols that sacrifice latency for energy. To make RMAC fit WSN better, we designed an easy and efficient routing protocol base station flooding (BSF) and then integrated it with a MAC protocol timing out MAC (TMAC) [1], while traditionally BSF and TMAC work separately at two layers. We call this two-layer protocol (TLP). We theoretically proved the advantages of RMAC over TLP and evaluated RMAC over NS-2. The simulation results show that RMAC spends half the latency of TLP, as well as consumes less energy than TLP.     

大口径埋地输水管道水泥砂浆内衬防腐蚀技术

本文介绍大口径埋地钢质输水管道水泥砂浆防腐蚀内衬的优良性能，报道该项技术在我国重要输水管道工程中的应用概况，总结了水泥砂浆内衬施工方法的特点以及近年来工程中的应用情况和效果。     

Actin isoform utilization during differentiation and remodeling of BC3H1 myogenic cells

Mouse BC3H1 myogenic cells and a bi-functional chemical cross linking reagent were utilized to investigate the polymerization of newly-synthesized vascular smooth muscle (alpha-actin) and non-muscle (beta- and gamma-actin) actin monomers into native F-actin filament structures during myogenesis. Two actin dimer species were identified by SDS-PAGE analysis of phenylenebismaleimide-cross linked fractions of BC3H1 myoblasts and myocytes. P-dimer was derived from the F-actin-enriched, detergent-insoluble cytoskeleton. Pulse-chase analysis revealed that D-dimer initially was associated with the cytoskeleton but then accumulated in the soluble fraction of lysed muscle cells that contained a non-filamentous or aggregated actin pool. Immunoblot analysis indicated that non-muscle and smooth muscle actins were capable of forming both types of dimer. However, induction of smooth muscle alpha-actin in developing myoblasts coincided with an increase in D-dimer level which may facilitate actin stress fiber assembly. Smooth muscle alpha-actin was rapidly utilized in differentiating myoblasts to assemble extraction-resistant F-actin filaments in the cytoskeleton whereas non-muscle beta- and gamma-actin filaments were more readily dissociated from the cytoskeleton by an extraction buffer containing ATP and EGTA. The data indicate that cytoarchitectural remodeling in developing BC3H1 myogenic cells is accompanied by selective actin isoform utilization that effectively segregates multiple isoactins into different sub-cellular domains and/or supramolecular entities.     

风化店火山岩油藏描述研究

风化店火山岩油藏属火山岩潜山油藏，储层岩性复杂，为裂缝－孔隙型双重孔隙介质。为了进行该油藏的油藏描述，通过测井资料的多井综合分析，评价了风化店火山岩油藏的岩相、地质构造、储层物性参数的空间分布规律、裂缝带的分布规律和油水分布规律，基本上搞清了油田产量下降快、含水上升快的主要原因，为石油储存量的复算，优化开发方案提供了可靠的依据。     

周期性动态热效应光栅的研究

为使激光诱导动态光栅产生在空间上可分辨的高效率衍射光，光栅介质必须足够薄以满足光栅条件，但动态光栅自衍射效率却又随介质厚度的增加而增加，我们提出用相位匹配的周期性薄光栅组可解决这一矛盾，并在实验上用周期性热效应光栅对理论进行了验证。     

岩溶山区渠系改造浅识

就雨量充沛的南方岩溶山区灌溉渠网在经受水文、地质、复杂地貌等多种不利因素影响，造成渠道严重破坏的问题，提出了进行改造处理的方法和措施，并根据具体不同特点，因地制宜，分类施治，取得较为成功的经验，这对与之相类似地区的渠系建设具有一定的参考意义。     

氮素水平对甜菜主要营养的影响

甜菜植株含氮量与施氮量呈极显著正相关，生育中前期氮的分配以叶部为主，其后氮向根的分配率增加，但高氮处理到生育后期氮对叶部的分配率仍处于较高水平，不利于产量形成和糖分积累。甜菜植株磷、钾含量与施氮量呈极显著正相关，氮与磷、钾表现出明显的互作效应。     

大坝外部变形自动化监测系统的应用试验

在论述ＴＰＳ全自动化变形监测系统测量方法的基础上，介绍了测量机器人在小浪底大坝外部变形监测中的应用试验情况，并对ＴＣＡ＋ＡＰＳＷｉｎ系统的精度、可靠性和工作效益作了分析。实践已初步表明，测量机器人用于大坝外部变形监测可以实现全自动化，有广泛的应用前景。     

安钢专用线安阳西站改扩建站场配置方案的选择

分析了影响安阳西站改扩建问题解决的几个方面的原因，提出了安阳西站改扩建站场配置最佳方案，以期达到远期发展目标。     

渤南油田沙三段沉积相和储层研究

渤南油田沙三段是油田的主要含油层系。通过取心井、岩屑录井及测井资料,研究了岩石的岩性序列、粒度演变、结构构造等,论证了渤南油田沙三段浊积扇沉积。并将各沉积时间单元的浊积砂体分为内扇、中扇、外扇亚相及内扇补给河道、阶地、天然堤及中扇辫状河道、叶状体等微相。文中阐述了各亚、微相砂体的储层特点,从储层的粒度、渗透率及微观孔喉结构的变化,分析其对各相带储油性质的影响,中扇储油性能较好,其叶状体部位岩性较均一,是储油的最佳场所,多数高产油井分布于该相带中。