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。     

转锥式生物质热解装置中热载体加热炉理论计算

结合燃油燃气锅炉和气力输送的设计理论与方法,自行设计制造一种新型的热载体加热装置,以解决生物燃油制备过程中热载体的加热问题,为该项技术的推广应用奠定基础。     

Role of asymptomatic carrier trees in epidemic spread of pine wilt disease

To determine why pine wilt disease caused by the pinewood nematode (Bursaphelenchus xylophilus) recurs in the same pine stand even after thorough eradication of dead pine trees, the amount of oleoresin exudation from artificial wounds was measured from 72 Pinus koraiensis trees, highly susceptible to this disease, for 4 years. The amount of exuded oleoresin was rated from 0 to 4. All values obtained for each tree were summed at each measurement; thereby a cumulative curve was drawn to monitor the physiological condition of each test tree. Cumulative curves suggest that some pine trees that died had already been infected in the previous year or earlier and then had survived without any visible symptoms. If cessation of oleoresin exudation delays, and overlaps with activity of Monochamus alternatus, the vector beetle of pinewood nematodes, in the following season, such trees can be referred to as latent carriers or asymptomatic carriers. They could play a significant role as attractants for M. alternatus that could then transmit B. xylophilus to neighboring trees. Behavior of M. alternatus caged with several pine seedlings, only one of which acted as an asymptomatic carrier of B. xylophilus, confirmed this idea. The presence of asymptomatic pine trees, which harbored B. xylophilus nematodes or had reduced annual elongation, near stumps of newly dead trees in the study stand also substantiated this hypothesis.     

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.     

NaClO和蔗糖溶液对红三叶种子发芽特性的影响

研究了不同浓度NaClO和蔗糖溶液对红三叶种子发芽的影响。结果表明,用0．2％NaClO溶液处理虹三叶种子15min,种子的发芽率最高,为60．6％;用0．2％NaClO溶液处理红三叶种子10min的带茵率最低,为0．41％。红三叶种子在没有添加蔗糖溶液的1／2MS培养基中发芽率最高,但长势较差;加入20g／L蔗糖的培养基中,虽然发芽率稍低,但生长良好,并有明显的毛根分化。     

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。     

ARM单片机技术特点及其应用

通过与传统的51单片机比较,介绍ARM单片机在指令系统、寄存器结构和总线技术等方面的优势,以及在车载数码系统和温室监控系统中的应用,并对ARM单片机的发展趋势进行了展望.     

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。