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影响饲料中粗蛋白含量测定准确度的几个因素 被引量:4
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作者 温铁岩 聂英斌 董春利 《技术与教育》 2012年第2期6-8,共3页
采用凯氏定氮法对饲料中粗蛋白含量进行分析测定的工作实践中,发现在饲料样品的采集、制备、称量、消解和粗蛋白的分析测定阶段,存在多种因素对样品的分析准确度有着重要影响,根据实践经验和分析研究,提出了具体的方法要点和注意事项,... 采用凯氏定氮法对饲料中粗蛋白含量进行分析测定的工作实践中,发现在饲料样品的采集、制备、称量、消解和粗蛋白的分析测定阶段,存在多种因素对样品的分析准确度有着重要影响,根据实践经验和分析研究,提出了具体的方法要点和注意事项,供相关分析工作者借鉴和参考。 展开更多
关键词 饲料 粗蛋白测定 凯氏定氮法
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脱硫工段综合节能改造实现方法
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作者 周勇进 《变频器世界》 2015年第11期46-47,共2页
本文涉及化工合成氨行业的节能改造,针对脱硫工段罗茨机的智能调速以及副线回流阀的综合控制以控制罗茨机的风量,均衡生产负荷、改善半水煤气经脱硫后的气质,介绍了以变频调速为核心手段来实现罗茨风机出口流量的调节,取代原有手工调节... 本文涉及化工合成氨行业的节能改造,针对脱硫工段罗茨机的智能调速以及副线回流阀的综合控制以控制罗茨机的风量,均衡生产负荷、改善半水煤气经脱硫后的气质,介绍了以变频调速为核心手段来实现罗茨风机出口流量的调节,取代原有手工调节回流阀的方法,对节能降耗、改善脱硫效果、提高产品质量具有重要意义。其关键技术在于变频调节与回流阀调节的综合控制,以改善脱硫气体的气质及降低罗茨机的运行电耗。 展开更多
关键词 智能调速 罗茨风机 回流阀 节能降耗
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Influence of Sorbent Type on Drying Efficiency, Production Costs and Nutritional Values of Mango By-Products Feeds for Livestock
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作者 Kiendrébéogo Timbilfou Koadia Marcelle Grâce +3 位作者 Sodre Etienne Barry Drissa Ouedraogo Zangbéwindin Isidor Tarpaga Vianey 《Food and Nutrition Sciences》 2023年第12期1221-1231,共11页
The aim of the study was to determine the best food absorbents between wheat, rice and maize bran and palm kernel cake, from a technical and economic point of view, in order to make a better recommandation for their u... The aim of the study was to determine the best food absorbents between wheat, rice and maize bran and palm kernel cake, from a technical and economic point of view, in order to make a better recommandation for their use in the production process of food based on mango by-products (peels, peels + pulp). To this end, series of 18 kg of fresh feed were prepared and spread out in a stall for sun-drying using a randomized Fisher system. Preparations were made using either mango peels (75%) + absorbent (25%) or pulp + mango peels (67%) + sorbent (33%). The results show that mango Peel feed loses more water (WL) with lover production yields (PY), higher mango incorporation rates into dry feed (MRI), longer drying times (UDT) and lower production costs (CPkgPD) than mango peel + pulp. The average DM, MAT, ADF and NDF fiber contents were almost equal to those of mango peels + pulp feed. The average Crude Fiber (CF) (25.13%) and DEp (2839 kcal/kgDM) contents were higher for mango skin feed than for mango skin + pulp feed, at 8.59% and 2536 for MAT and DEp respectively. Mango peels + wheat bran (PSB25) and whole mango (MESB33) feeds recorded the highest and almost equal levels of TCP, NDF and MM. Production costs per kg of feed dry mater (CPkgDM) for feed produced at 25% were on average 33% higher than for whole mango (WM) feed. Excluding mango raw material, palm kernel meal (PK), rice bran (RB), maize bran (MB) and wheat bran (WB) can be ranked 1st, 2nd, 3rd and 4th in terms of cumulative performance of production parameters. Producers can then choose the type of sorbent they wish to use according to this ranking and the local availability of the sorbent. These feeds can be used for both ruminants and monogastrics, but are better suited to ruminant feeding due to their high fiber content. 展开更多
关键词 Mango provends Food Absorbent Drying Efficiency Nutritional Values An-imal Feed Ivory Coast
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