羊泰勒虫病的流行、症状及防治措施

羊泰勒虫病主要是由羊泰勒属原虫引起的一种原虫病.患病羊主要表现为体温升高、精神不振、贫血、机体消瘦、淋巴结肿大等症状.该病传播速度快、死亡率高,可对养殖场造成巨大的经济损失,严重抑制我国养羊业的发展.该病主要发生于羔羊、老龄羊及体质较弱的羊.该病一年四季都可发生,患病羊表现为生长发育迟缓、生产性能下降.本文主要通过对该...     

不同引进巴旦木品种光合作用研究

以美国和新疆莎车引进到新疆阿克苏地区温宿县佳木国家重点林木良种基地的巴旦木优良品种为试材,用Li-6800光合作用仪测定引进的6个品种光合日变化。结果表明,麻壳的Pn曲线呈单峰型,米星、布特、鹰嘴、尖嘴黄呈双峰型存在明显的午休现象,石头呈三峰型;麻壳、米星、鹰嘴、尖嘴黄、石头的Tr曲线呈单峰型,布特呈双峰型;米星、麻壳、尖嘴黄的Gs曲线呈单峰型,鹰嘴呈双峰型,布特、石头呈三峰型;鹰嘴、麻壳和米星的Ci曲线呈单谷型;布特、石头和尖嘴黄呈双谷型。不同巴旦木品种的净光合速率差异不显著。不同品种巴旦木的日均Gs和Ci值存在显著性差异,米星日均Gs值显著高于石头;米星日均Ci值显著高于石头、麻壳、尖嘴黄;米星光合作用各项参数优与其他品种,可为巴旦木成功引种阿克苏地区提供参考。     

塔城地区杂交玉米品种区域试验

塔城地区农业科学研究所与登海种业公司合作,针对有效积温、气候因素、品种产量、品种性状、抗病性等因子进行了记载分析,对登海种业公司的5个杂交玉米品种进行区域试验,以期筛选出适合在塔城地区种植的高产玉米品种。试验结果表明:登海1836产量较高,植株韧性较好,抗逆性与抗病虫能力一般,建议推荐其进入下一轮试验,以进一步确定其生物学性状与产量。     

An Experimental Investigation of Condensation Heat Transfer of HC600a-Oil Mixture in a Horizontal Micro-fin Tube

Experimental study of condensation heat transfer of HC600a-oil mixture in a horizontal micro fin tube is performed to investigate the inflence of oil percentage, saturated pressure and mass flux on condensation heat transfer.The empirical correlation according to this study is well correlated by the experimental data. By comparing with other refrigerants, HC600a has no inflence on ozone depletion and better heat transfer characteristcs than CFC12 and HCFC134a. It is a promising substitute for CFC12.     

ECG Information Management System of Virtual ECG Instrument

ECG is an important method in clinical heart disease diagnosis. The storing of lots of ECG and other corresponding materials in information management system has great value to medical researcher for their reference and research. Embedding the ECG information management system to virtual ECG instrument is not only enhanced the operating value but also increased the functions to virtual ECG instrument. The model of relation database and ActiveX Data Object (ADO) of VC++6.0 is used in the system. The key functions of Storing,Query,Deleting and core modules are introduced.