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为了解决现代规模化、精细化奶牛养殖中牛舍环境难以实时远程监控的问题,笔者设计了基于Android和ZigBee平台的牛舍环境远程监测系统。系统采用STM32单片机为控制核心,利用温湿度传感器、光照传感器和有害气体传感器采集牛舍环境信息,将环境参数通过ZigBee网络传输到远程PC机服务器上,并借助TCP/IP通信协议搭建TCP服务器。移动平台通过访问PC机的IP地址与端口号建立网络通信,进而获取牛舍当前的温度、湿度、光照、有害气体浓度等环境参数,实现了对牛舍环境的远程无线实时监测。 相似文献
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设施羊舍环境信息监控系统的设计 总被引:1,自引:0,他引:1
《黑龙江畜牧兽医》2017,(3)
为了实时监测与控制分娩母羊舍环境信息,减少外界环境因素对产羔母羊的影响,提高羔羊成活率,实现福利化养殖,研究设计了一种基于无线传感网络(Wireless sensor network,WSN)实时对羊舍环境信息监测与控制的系统。系统以RS485-WIFI协议转换器将传感器与控制器接入局域网,通过2.4 GHz无线通信技术进行实现数据传输与访问控制。实现了实时数据采集,并保存在SQL Server数据库中,同时可将结果实时反馈给养殖人员,通过羊舍环境因子进行调控,实现预警与控制。结果表明:当每隔1 min采集一次时,通讯丢包率在1%以内,远程监控系统稳定,能满足设计及应用的要求。 相似文献
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以国际标准强毒R株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离MG,并收集感染鸡所产蛋分离MG。结果表明,人工感染48小时后上、下呼吸道及肺已被全面感染,96小时气囊已被感染,120小时输卵管已能分离到MG,卵巢始终分离不到MG。人工感染鸡自144小时便能在其所产蛋中分离出MG。药物治疗能在72小时内消除感染,油乳剂苗则需24天后逐渐降低蛋内MG分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内MG,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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