基于Cortex-M4内核的μCOS-Ⅱ移植     

《科技视界》2016,(9)

针对TI公司新推出的基于Cortex-M4内核的TM4C123G高性能低功耗芯片,详细介绍了嵌入式开源实时操作系统μCOS-Ⅱ在芯片上的移植方法。根据移植的需求,首先介绍了芯片的一些基本功能以及相关的软件开发环境,然后结合芯片的固有特性以及μCOS-Ⅱ移植的需求,使用C语言和汇编语言修改了相关的源文件,并详细阐述了修改的原因。  相似文献   

毛竹珍稀新栽培变种——绿槽龟甲竹     

陈天国 《世界竹藤通讯》2014,(2):23-24

描述了毛竹的1个新栽培变种——绿槽龟甲竹。其竹秆下部一段的节交互歪斜,上下节在一侧相连,而节间在另一侧偏肿呈龟甲状,竹秆黄色,且龟甲状秆对称绿色纵条纹,分枝一侧纵沟槽绿色,叶片有淡黄色细纵条纹。  相似文献   

二倍体栽培棉种草棉和亚洲棉的核型比较研究   总被引：5，自引：0，他引：5  

宋平  季道藩 《作物学报》1991,17(2):102-106

以二倍体栽培棉种草棉(Gossypium herbaceumL.)3个品种和亚洲棉(G.arboreum L.)6个品种,以及1个亚洲棉与草棉种间杂种 F_1为材料,进行核型分析。结果表明,草棉和亚洲棉在核型上基本相似,其主要差异是草棉具有2对 st 染色体,而亚洲棉中没有;虽然2个棉种的核型类别都属于2A 型,但草棉的核型比亚洲棉更对称,属于较原始的类型。来  相似文献   

扎龙保护区圈养亚成体丹顶鹤越冬期行为的研究     

周少婷  李淑玲  马建华  王文锋 《动物医学进展》2016,(12):66-72

为了解扎龙保护区圈养群体亚成体丹顶鹤越冬期越冬行为策略,于2014年11月至2015年3月采用目标取样法和瞬时记录法对圈养2013年和2014年亚成体丹顶鹤进行研究。结果表明,圈养亚成体丹顶鹤越冬期主要以取食行为为主(34.14%),其次为站立行为(15.77%);双因素方差分析显示,温度对越冬期各行为均有显著影响,年龄仅对玩耍行为有显著影响,Pearson相关性分析,温度与取食和游走行为显著正相关,与站立和静栖显著负相关,年龄与玩耍行为显著正相关。表明圈养亚成体丹顶鹤越冬期温度升高时取食和运动,温度降低时站立和静栖,2岁龄亚成体丹顶鹤相较于1岁龄更喜欢玩耍。  相似文献   

Improvement of an enzyme-linked immunosorbent assay for equine herpesvirus type 4 by using a synthetic-peptide 24-mer repeat sequence of glycoprotein G as an antigen     

Hiroshi BANNAI  Manabu NEMOTO  Koji TSUJIMURA  Takashi YAMANAKA  Ken MAEDA  Takashi KONDO 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2016,78(2):309-311

To increase the sensitivity of an enzyme-linked immunosorbent assay (ELISA) for equine herpesvirus type 4 (EHV-4) that uses a 12-mer peptide of glycoprotein G (gG4-12-mer: MKNNPIYSEGSL) [4], we used a longer peptide consisting of a 24-mer repeat sequence (gG4-24-mer: MKNNPIYSEGSLMLNVQHDDSIHT) as an antigen. Sera of horses experimentally infected with EHV-4 reacted much more strongly to the gG4-24-mer peptide than to the gG4-12-mer peptide. We used peptide ELISAs to test paired sera from horses naturally infected with EHV-4 (n=40). gG4-24-mer ELISA detected 37 positive samples (92.5%), whereas gG4-12-mer ELISA detected only 28 (70.0%). gG4-24-mer ELISA was much more sensitive than gG4-12-mer ELISA.  相似文献   

THE REIMPROVEMENT FOR IMPULSE OF G. I. TAYLOR THEORY OF PLASTIC DEFORMATION IN IMPACT OF CYL1NDICAL PROJECTILES     

Liu Xiangchen Li Zeqiang 《保鲜与加工》1991,(5):109-115

In this paper the reimprovement for G. I. Taylor theory of plastic deformation in impact of cylindical projectiles is done. The impulse in the reimproved theory is G. I. Taylor' s 1/2, and 3/4 of G. I. Taylor' s improved theory. The analytical solution of the reimproved theory shows that it gives better agreement with exprimental results than those of the original Taylor' s theory and, the improved theory.  相似文献   

The effects of dietary oregano essential oil on live performance,carcass yield,serum immunoglobulin G level,and oocyst count in broilers     

《The Journal of Applied Poultry Research》2012,21(3):630-636

  相似文献   

Caterpillar G3412型燃气发电机排障实践     

赵国辉  马源山 《油气储运》2010,29(3)

介绍了Caterpillar G3412型燃气发电机的基本工作原理,分析了涩宁兰输气管道涩北首站该型燃气发电机拉缸的故障情况。通过更换2号缸的缸桶、活塞、气环和油环,以及高压线圈、O形圈、火花塞、水湿传感器等附件,使发电机故障得以排除,同时提出了发电机组日常运行的维护方法。  相似文献   

基于3G通信与GPS技术的农机视频监控系统研究     

孙立民  武洪峰 《现代化农业》2011,(7):44-46

针对现代化大农机发展的需求,研究了如何将3G通信技术与GPS定位技术相结合,建立农机视频监控系统,用于现代化大农机管理。采用WebGIS技术为基础,以B/S结构进行开发建设,为农机综合管理监控提供了新思路、新手段。  相似文献   

Effect of pyrethroids on carbohydrate metabolic pathways in common carp,Cyprinus carpio     

K Kamalaveni  V Gopal  Ursula Sampson  D Aruna 《Pest management science》2001,57(12):1151-1154

The activity levels of succinate dehydrogenase (SDH) and glucose‐6‐phosphate dehydrogenase (G6PD) were assessed in various tissues of Cyprinus carpio var communis which had been exposed to lethal concentrations of group‐II pyrethroids (deltamethrin, cypermethrin, fenvalerate and fluvalinate) for a period of 72 h. The results indicated a steady decrease in SDH activity with a concomitant increase in G6PD activity. The decreased SDH activity indicated inhibition of SDH at mitochondrial level and the increased G6PD activity an enhancement of an alternative pathway of carbohydrate metabolism, viz the hexose monophosphate shunt (HMP) or pentose phosphate pathway as a biochemical adaptation to overcome the toxic stress. © 2001 Society of Chemical Industry  相似文献