基于MSP430和ST16C554的JetCat发动机监测控制器设计

基于MSP430和ST16C554针对JetCatP200型发动机设计了一种发动机监测控制器;阐述了发动机监测控制器的硬件构成和软件流程,着重介绍了如何对3台发动机进行监测和保持3台发动机推力均衡的控制原理。     

Support for (Z)-11-Hexadecanal as a Pheromone Antagonist in Ostrinia nubilalis: Flight Tunnel and Single Sensillum Studies with a New York Population

The flight-tunnel response of male Z-strain European corn borer moths (ECB), Ostrinia nubilalis, from a population in New York State (USA), was significantly antagonized by addition of 1% (Z)-11-hexadecanal (Z11-16:Ald) to their sex pheromone (a 97:3 mix of (Z)- and (E)-11-tetradecenyl acetate [Z/E11-14:OAc]). The level of antagonism was equivalent to that observed for the previously identified ECB antagonist, (Z)-9-tetradecenyl acetate (Z9-14:OAc), and supports a recent report showing that Z11-16:Ald, a minor pheromone component of the Noctuid moth, Sesamia nonagrioides, caused antagonism of ECB pheromone communication in sympatric populations in the Iberian Peninsula. Single-sensillum recordings from ECB antennae, which included cross-adaptation experiments, showed that the same olfactory receptor neuron processing Z9-14:OAc inputs was responsible for detecting Z11-16:Ald, and that this neuron was not responsive to two other aldehydes, (Z)-9-tetradecanal (Z9-14:Ald) and (Z)-9-hexadecanal (Z9-16:Ald), found in other moth sex pheromones. Our results show that the antagonism is not confined to one geographic region, is specific for Z11-16:Ald, and that antagonist pathways might have the potential for processing a number of structurally similar compounds.     

渤海海域旅大16构造沙三段沉火山碎屑岩储层物性及形成机理

渤海海域旅大16构造沙三段沉火山碎屑岩储层受火山碎屑物质和沉积作用双重控制,但优质储层形成机理尚不清楚。综合应用井壁取心、铸体薄片、测井曲线等资料,对沉火山碎屑岩储层致密成因及相对高渗储层主控因素进行了研究。结果表明:临近物源区的储层岩石成分成熟度和结构成熟度较低,成岩过程中形成大量搭桥状伊利石充填了孔隙,富铁、镁的安山岩岩屑蚀变析出细小黄铁矿晶簇,呈星散状密集分布在粒间,储层中毛管束缚水含量高是储层致密的主要成因;沉积期风化淋滤作用及后期成岩作用形成的高岭石对储层起到支撑和保护作用,酸性火山岩岩屑在埋藏过程中生成大量环颗粒分布的雏晶石英,能够起到抗压实和抑制伊利石生长的作用,酸性火山岩岩屑相对易溶蚀而形成次生孔隙,是局部相对高渗储层的主要成因。     

Field induced magnetic phase transition as a magnon Bose Einstein condensation

We report specific heat, magnetocaloric effect and magnetization measurements on single crystals of the frustrated quasi-2D spin antiferromagnet Cs₂CuCl₄ in the external magnetic field along a-axis and in the temperature range . Decreasing the applied magnetic field B from high fields leads to the closure of the field induced gap in the magnon spectrum at a critical field and a long-range incommensurate state below B_c. In the vicinity of B_c, the phase transition boundary is well described by the power law T_N∼(B_c-B)^1/φ with the measured critical exponent φ?1.5. These findings provide experimental evidence that the scaling law of the transition temperature T_N can be described by the universality class of 3D Bose-Einstein condensation (BEC) of magnons.     

紫金山铜矿浸矿微生物中一株硫杆菌的分子生物学鉴定

对福建紫金山铜矿生物堆浸系统中的浸矿微生物进行分离纯化,对得到的纯化培养物采用了多相分类与系统发育分析方法.应用16S rRNA基因全序列分析技术,进行分子生物学鉴定、微生物形态性征与生理生化代谢特征鉴定.结果表明.该菌株归属于硫杆菌（Thiobacillus）属,可认定为Thiobacillus aibertensis菌株.     

Evaluation of continuous biohydrogen production from enzymatically treated cornstalk hydrolysate

Enzymatically treated cornstalk hydrolysate was tested as substrate for H₂ production by Thermoanaerobacterium thermosaccharolyticum W16 in a continuous stirred tank reactor. The performance of strain W16 to ferment the main components of hydrolysate, mixture of glucose and xylose, in continuous culture was conducted at first, and then T. thermosaccharolyticum W16 was evaluated to ferment fully enzymatically hydrolysed cornstalk to produce H₂ in continuous operation mode. At the dilution rate of 0.020 h⁻¹, the H₂ yield and production rate reached a maximum of 1.9 mol H₂ mol⁻¹ sugars and 8.4 mmol H₂ L⁻¹ h⁻¹, respectively, accompanied with the maximum glucose and xylose utilizations of 86.3% and 77.6%. Continuous H₂ production from enzymatically treated cornstalk hydrolysate in this research provides a new direction for economic, efficient, and harmless H₂ production.     

CAN双通道冗余步进电机控制系统设计

针对一些特殊场合系统的可靠性要求,论文设计了以双PIC16F877单片机为核心主控单元,在CAN总线双通道冗余技术方法的基础上,以两相步进电机为控制对象,采用细分控制算法控制步进电机,给出了冗余控制系统主要硬件电路以及控制算法,最后给出了实验波形,并对实验结果进行了分析.     

33株柯萨奇病毒A组16型分离株的全基因序列分析

目的对2008～2010年北京和青岛地区流行的33株柯萨奇病毒A组16型(Coxsackie virus A16,CA16)分离株的全基因序列进行分析。方法收集2008～2010年北京和青岛地区CA16感染患者咽拭子标本,采用Vero细胞对病毒进行分离,并经噬斑纯化。提取病毒RNA,采用RT-PCR法分段扩增CA16全长基因,经序列测定和拼接后,利用DNAStar和MEGA5.10软件分析全基因序列。结果经病毒分离和噬斑纯化,共获得33株CA16分离株;33个分离株之间的核苷酸序列同源性大于90.9%,与CA16国际标准株G10各区段的核苷酸序列同源性为72.7%～89.0%,氨基酸序列同源性为79.3%～100.0%;与近年中国分离的CA16 SZ/HK08-7株同源性较高,全基因组同源性大于91.5%,各区段核苷酸序列同源性均大于83.7%;在基于VP1序列的种系进化树中,BJWG16、BJWG17、BJWG20等23个分离株属于C1亚型,其余10个分离株属于C3亚型。结论 2008～2010年北京和青岛地区流行的33株CA16分离株均为C基因型。本研究对我国CA16分子流行病学、毒力位点的研究以及疫苗株的选择具有重要意义。     

吡啶降解菌的分离及降解动力学研究

从受污染的土壤中筛选得到1株以吡啶为唯一碳源和能源生长的高效降解菌P38,经革兰氏染色、生理生化特性研究及16S rDNA鉴定为芽孢杆菌(Bacillus sp.)。该菌耐受吡啶浓度可高达4 855mg/L,降解吡啶的适宜条件为:培养基初始pH=7～10,温度32～42℃,转速150r/min。动力学研究表明,P38降解吡啶的过程可用零级反应表示。该菌底物降解范围较广,对喹啉、异喹啉、咪唑等氮杂环化合物也具有较好的降解效果。     

激光冲击波作用下3003H16铝合金板料层裂的研究

为了得到工艺参量对层裂的影响,运用有限元模拟的方法,采用最大拉应力瞬时断裂准则来判断板料是否发生层裂,并对各参量对层裂的影响进行了分析;进行了激光冲击成形试验,用电子扫描显微镜对冲击后的试样进行观察,并运用应力波传播分析了层裂的产生、发展、形成。结果表明,层裂易发生在激光冲击区域内,其次是在光斑边缘处,而在冲击区域外不可能发生层裂;脉冲宽度、峰值压力和板料厚度对层裂发生的位置影响较大,而光斑直径对层裂发生的位置几乎没有影响。这对激光冲击成形的发展具有指导意义。