山体隧道群双管安装流水施工方法

兰州-成都原油管道工程、中卫-贵阳联络线康县隧道穿越段管道双管敷设难度大,传统的隧道管道安装施工设备、机具无法在隧道内使用.针对隧道内管道双管施工空间狭小问题,研制出隧道专用自行龙门架、机械运管炮车和隧道焊接小车,并针对两种不同管材提出焊接施工要求.详细介绍了隧道管道安装流水作业施工方法中施工前准备、运管、布管、管道组对和焊接等安装流程及操作要点.同传统的隧道轨道安装法相比,该管道安装施工操作方便、施工进度快、经济效益显著.(表1,图5,参4)     

三十烷醇纳米制剂对冬小麦抗旱生理特性的影响

以‘XR4347’品种冬小麦为供试作物，在步入式气候室内开展盆栽试验，设置3种叶面喷施剂型和3个灌溉水平，剂型为市售三十烷醇微乳剂（TRIA，T1）、水滑石负载三十烷醇纳米制剂（TRIA-LDH，T2）和助剂条件对照（T3）；灌溉水平分别设置为土壤田间持水量的90%（充分灌溉，W1）、60%（中度水分胁迫，W2）和40%（重度水分胁迫，W3）。结果表明：（1）在相同水分处理下，喷施TRIA和TRIA-LDH对小麦叶片光合速率有促进作用。中度水分胁迫下，喷施TRIA和TRIA-LDH的小麦地上部干质量较对照处理分别增加69.9%和32.7%，水分利用效率分别增加32.2%和16.4%；重度水分胁迫下，喷施TRIA-LDH的小麦耗水量比喷施TRIA显著降低24.0%，地上部干物质积累量增加，因此水分利用效率显著提高13.6%。（2）中度水分胁迫下喷施TRIA-LDH的小麦叶片过氧化氢酶（CAT）和超氧化物歧化酶（SOD）活性比喷施TRIA处理显著增加2倍，重度水分胁迫下喷施TRIA-LDH的小麦叶片SOD活性比喷施TRIA处理显著增加1倍，表明喷施TRIA-LDH比喷施TRIA对抗氧化酶活性的促进效果更好。（3）重度水分胁迫下，喷施TRIA-LDH与TRIA的小麦叶片ABA含量分别比对照处理显著降低21.8%和30.9%，表明重度水分胁迫下外源施用三十烷醇可通过降低叶片ABA含量有效缓解水分胁迫对于植株生长的抑制。（4）重度水分胁迫下，喷施TRIA的小麦叶片保卫细胞Ca²⁺大量外流，而喷施TRIA-LDH的叶片保卫细胞Ca²⁺内流，可见植物对TRIA-LDH的吸收利用效果更好。在水分胁迫下，三十烷醇纳米制剂增强了植株的抗旱能力，提高了植株的水分利用效率。因此，水滑石纳米载体可用于负载三十烷醇，实现三十烷醇对植物高效、可持续的调控。     

Improve the Hardware of Watt-hour Meter Reading Figure in Machinery to Achieve to Long-range Reading

It is a time-consuming job that reading electricity meter from door to door every month. So, improving the hardware of traditional watt-hour meter will change the machinery digit into electricity digit, and read electricity meter in long-rang with wireless carrier. Aautomatic collection, transfer and handling are applied to electricity energe manage system. It overcomes the weakness of traditional mannered reading model. The feature is that simple change the circuit to get the effect in low cost.     

Channel Characteristics of Low Voltage Power Line

In order to make good use of power line carrier to communicate, it is necessary to analyze the time-variable, impedance,attenuation and noise characteristics of low voltage power line. The waves of every characteristic have been experimented. At the same time, aiming at these characteristics, some available measures are given in order to conquer the disadvantage factors. The experimental results show that some suitable carrier communication modes must be adopted to realize ideally the carrier communication on low voltage power line.     

烤鸡的制作加工工艺及实验结果分析

加强学生实践能力培养,实验实训教材是重要的载体,在具体情景中学习的知识才有迁移性,要求学生在学习中将理论与实践紧密结合。     

数字转型中的中青年中国近现代史学者学术信息搜寻行为研究——基于Al-Suqri模型的考察

[目的 /意义]在数字转型进程中,电子载体信息资源越来越多,形成数字载体与传统纸质载体并存的信息环境。但不同载体环境下人文学者的学术信息搜寻行为未得到足够重视,需要进一步关注。[方法 /过程]本文回顾国内外的相关研究,选取Mohammed Al-Suqri提出的学术信息搜寻行为模型,以其中的分类—筛选—选择资源—汇集信息过程为基础对10名来自国内6所高校的中青年中国近现代史学者进行访谈。通过对访谈结果的内容分析,讨论两种载体环境下中青年中国近现代史学者学术信息搜寻行为的不同特征,[结果 /结论]提出针对纸质环境和数字环境中人文学者学术信息搜寻细化过程的Al-Suqri扩展模型。     

不同吸附载体对木霉菌防治棉花黄萎病的效果

利用锯末、玉米芯末、膨润土等为木霉菌载体,对棉花进行根区施药防治棉花黄萎病。试验结果表明,以玉米芯末为载体的处理防治效果最佳,药后60天和90天防治效果分别为70．6％和83．2％,以锯末为载体的处理防效较好,药后60天和90天防治效果分别为68．1％和80．6％,两者均可作为木霉菌防治棉花黄萎病的载体,具有广阔的应用前景。     

Long‐term viability of the northern anthracnose pathogen,Kabatiella caulivora,facilitates its transportation and spread

The conidia and resting hyphae of the northern anthracnose pathogen of Trifolium species, Kabatiella caulivora, were effectively carried by, and maintained long‐term viability on, a range of materials, including metals, fabrics, woods and plastics. Conidia and hyphae became thick‐walled and melanized with time. There were significant (P < 0.001) differences in conidia/resting hyphae survival between carrier materials and between temperature regimes. At 23 °C/8 °C day/night, conidia and resting hyphae remained viable on steel, corrugated iron, galvanized steel, all tested fabrics, wood and random mixed materials for up to 8 months. At 36 °C/14 °C day/night, conidia and resting hyphae remained viable for up to 8 months, but only on cotton, denim, fleece, silk, leather, paper, plastic and all wood materials. At 45 °C/15 °C day/night, conidia and resting hyphae remained viable up to 8 months only on fleece wool, Eucalyptus marginata (jarrah wood) and paper. There were significant differences between carrier materials in their abilities to retain conidia and resting hyphae after washing (P < 0.001). Metabolic activity was confirmed for conidia and resting hyphae recovered after 8 months and K. caulivora colonies successfully re‐established on potato dextrose agar. Findings confirmed the critical importance of materials as long‐term carriers of viable K. caulivora conidia and resting hyphae, highlighting the potential for spread of a highly virulent K. caulivora race within and outside Australia via farming equipment, clothing and other associated materials. Results also have wider biosecurity implications for the transportation of fungal‐infested carrier materials previously considered as low risk.     

新闻博客：高校网络思想政治教育的新载体

新闻博客作为博客的一种形式，已经成为一种全新的信息传播的载体，具有传统载体不可比拟的特点和优势，深刻地影响着人们的生活方式、行为方式和思维方式。在科学技术发展的前沿，在网络普及的高校，若能用好新闻博客这种新载体，将有助于提高思想政治教育的影响力和时效性。     

利用沸石载体减少氮肥在土壤中损耗的研究

利用沸石较强的阳离子交换性和吸附性特点,将其用作氮肥硝酸铵载体,采取土壤表施和深施,定期测定土壤氮素含量,研究其动态变化。结果表明,采用载体处理在土壤中对氮素的保存率随时间的延长而提高,３０ｄ试验期全氮含量比同期对照提高５％￣８７．５％,水解氮含量比同期对照提高０．８５％￣４２．６％。据此认为,采用沸石载体处理氮肥,对提高其肥效和延长土壤供肥期及减少氮肥在施入土壤后的损耗具有明显作用。