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微机温室综合环境控制系统 总被引:4,自引:0,他引:4
本文阐述一个由上下位微机组成的温室综合环境监控管理系统。它通过单片机对温室综合环境因子采集及上位486 微机监控和管理,实现对温室综合环境控制功能。 相似文献
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PS1016单片机在日光温室综合生态环境自动化调控中的应用研究 总被引:1,自引:0,他引:1
以PS1 0 1 6为主控芯片的日光温室综合生态环境自动化调控系统 ,运用了新颖的动态控制原理 ,简化了电路的结构 ,降低了温室内生态环境管理技术的难度 ,优化了投入与产出比 相似文献
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In the present study roller milling potential of amaranth grains was evaluated. The conditioning moisture influenced the millability of the amaranth grain. The results showed that the coarse seed coat (CSC) fraction increased from 12.91 to 38.33% with increase in conditioning moisture of the grains from 11 to 18.5%. The nutrients were more concentrated in the CSC fraction, while flour (FL) fraction showed low protein, ash, fat and dietary fiber contents. As the grain moisture content was increased from 11.0 to 15.5%, the yield of flour decreased with improvement in the brightness values. CSC showed higher values for redness and yellowness and lower values for brightness compared to other milled fractions. CSC had the highest water and oil holding capacities with the values of 410 g/100 g and 215 g/100 g respectively. The swelling power was also higher for CSC and fine seed coat (FSC) fractions. Among milled fractions, highest pasting temperature of 75.9 °C and peak viscosity of 212 BU was recorded for CSC and FL fractions respectively. These results showed that the roller mill can be used for milling amaranth grains to produce fractions rich in nutrients with unique functional properties. 相似文献
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《Communications in Soil Science and Plant Analysis》2012,43(17):2160-2167
Soil denitrifying enzyme activity (DEA) is often assessed after cold storage. Previous studies using the short-term acetylene inhibition method have not considered conditioning time (post-cold-storage warm-up time prior to soil analysis) as a factor influencing results. We observed fluctuations in DEA following cold storage, suggesting a need to consider conditioning time when planning and interpreting results. 相似文献
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Anna Elisabeth Pronker Nancy Marie Nevejan Frank Peene Pieter Geijsen Patrick Sorgeloos 《Aquaculture International》2008,16(4):297-307
Blue mussel (Mytilus edulis) broodstock collected from the Irish Sea during wintertime (November) was conditioned with three different microalgae diets.
Positive flagellates (PF) treatment consisted of Pavlova lutherii, Isochrysis galbana (T-Iso), and Chaetoceros calcitrans (1:1:1). Positive diatoms (PD) treatment consisted of Pavlova lutherii, Chaetoceros calcitrans, and Skeletonema costatum (1:1:1). Broodstock animals in the PF and PD treatments were fed a total of 2.4 × 1011 algae cells per day. Animals in the negative flagellates (NF) treatment received only 1/8th of the total amount of algae
of the PF diet. The conditioning diets had an impact on spawning success and broodstock fecundity but not on hatching rate,
which was similar in all three groups. The best results were obtained with the PD diet where 84% of the conditioned animals
spawned and females released 5.0 × 106 eggs on average. Animals belonging to the PF and NF treatments released, on average, only 3.6 × 106 and 1.6 × 106 eggs, respectively. Although the amounts of algae provided to the broodstock animals had no effect on the hatching rate,
the D-larvae resulting from the NF treatment were smaller in size than the larvae from the other treatments. Biochemical analysis
of the different broodstock groups at the end of the experiment revealed higher carbohydrate levels in group NF than in PF
and PD, supporting the theory that gametogenesis is mainly supported by the energy from the glycogen reserves. As far as we
are aware this is the first study describing hatchery broodstock conditioning of blue mussels under fully controlled conditions. 相似文献
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本试验旨在探究粗脂肪水平和不同调质温度对颗粒饲料硬度的影响。在粗脂肪水平分别为3.37%、4.0%和4.65%时,调质温度为60℃、70℃和80℃时进行制粒为9种饲料,测定制粒后不同风干时间颗粒饲料的硬度、颗粒耐久性指数(PDI)等加工质量指标。结果表明:对于未经风干的颗粒饲料,当调质温度为60℃,当粗脂肪含量由3.37%提高到4.65%时,颗粒饲料硬度降低了30.6%(P0.05);而当粗脂肪含量为3.37%,调质温度从60℃升高到80℃,颗粒饲料硬度升高了138.5%(P0.05);与粉料相比,调质温度为60℃、70℃和80℃时颗粒饲料淀粉糊化度分别显著增加了67.9%、88.1%和130.5%(P0.05);随着颗粒饲料风干时间的延长,饲料水分降低,颗粒硬度却随之增加(P0.05);PDI与颗粒硬度呈显著的正相关(R~2=0.954,P0.05)。综上可知,颗粒饲料的粗脂肪含量、调质温度和水分含量均会影响颗粒饲料的硬度。在实际生产过程中,可通过提高调质温度,降低饲料中粗脂肪或水分含量,进而提高颗粒饲料的硬度。 相似文献