A simple method is described that can be used to determine bicarbonate and volatile fatty acid in wastewater by a two-stage sequential titration. 用二终点连续滴定方法测定污水中的碳酸氢根和挥发性脂肪酸的含量,结果准确,方法简单易行,值得应用。
Relationship of total volatile fatty acid, gas production and feed nutrients in vitro 体外法研究总挥发性脂肪酸和产气量与饲料营养成分的关系
Alkalinity improved production of volatile fatty acid from anaerobic fermentation of textile dyeing sludge 碱性条件促进纺织印染污泥厌氧发酵产挥发性脂肪酸
A volatile pressing oil HC-L200 was formulated with hydrotreated narrow fraction light base oil, fatty acid ester lubricant and additives, such as homemade wetting agent and compounded antirust agent. 根据铝翅片冲压加工工艺的技术特点,选用加氢精制窄馏分轻质油为基础油,添加特制的脂肪酸酯为油性剂以及自制的润湿剂和复合防锈剂等添加剂调合成HC-L200挥发性冲压油。
Research on accumulation characteristics of volatile fatty acid in an anaerobic sequencing batch reactor 厌氧序批式反应器内挥发性脂肪酸积累特性研究
The effects of the new and old tapping systems, different stimulation intensity and different tapping frequency on the volatile fatty acid number ( VFANo.) 研究了橡胶树新、旧割胶制度及不同刺激强度、不同割胶频率对其胶乳VFANo。
The effects of free unsaturated fatty acid ( FFAM) and vegetable oils on pH, total volatile fatty acid ( TVFA) and pure cellulose degradation by mixed ruminal microbes were studied in a 4 × 4 factorial experiment with in vitro static incubation method. 用体外静态培养法研究添加游离不饱和脂肪酸混合物(FFAM)和植物油对瘤胃微生物培养液pH值、总挥发性脂肪酸(TVFA)和微晶纤维素降解的影响。
The results indicated that the total volatile matter content and the content of the volatile matters with low polarity and boiling points increased with the storage time, and the content of the volatile matter with high polarity corrected with its fatty acid value in power function relationship. 结果表明:稻谷中挥发性物质各组分的总含量和小极性、低沸点物质随储藏时间的增加而增加;稻谷中极性较强的挥发性物质的含量与脂肪酸值存在幂函数的关系。
Relationship between Tapping Systems and Volatile Fatty Acid Number of Natural Rubber Latex 割胶制度与天然胶乳挥发脂肪酸值的关系
Rumen Ciliate Protozoal Fauna and Volatile Fatty Acid Concentration of Buffalo in China 中国水牛瘤胃纤毛虫分布与挥发性脂肪酸的研究
Study on the methods of determination of volatile fatty acid in the rumen liquid of lambs by gas chromatography 气相色谱测定羊瘤胃液中挥发性脂肪酸方法研究
In recent years, many researches showed that it contains not only some inorganic elements but also alkaloid, volatile oil, flavonol, saccharide, steroid, glycoside, fatty acid, fatty acid ester, and aryl compounds. 近年来的国内研究表明,牛心朴子的化学成分除含有一些无机元素外,还含有生物碱、挥发油、黄酮醇类、糖类、甾体及其甙、脂肪酸及脂肪酸酯、芳香族化合物等。
C-labelled propionate and-14C-glucose were used as a tracer to measure the percentage of glucose carbon from propionate and glucose turnover of the sheep sustained by intragastric nutrition when volatile fatty acid mixtures with three acetate to propionate ratios were infused. 本项试验使用了14C标记的丙酸和葡萄糖;用同位素示踪技术研究了全营养灌注绵羊改变瘤胃灌注混合挥发性脂肪酸中乙/丙酸比例后,丙酸糖异生代谢和体内葡萄糖周转速度的变化。
Studies on Utilizing Ammonium Salts of Volatile Fatty Acid ( AS-VFA) in Hu Sheep In vitro and experiments of digestion and metabolism in forestomach 湖羊利用混合挥发性脂肪酸铵的研究&体外试验与前胃消化代谢试验
The removal rate of COD is about 70%; the concentration of volatile fatty acid should be monitored in the anaerobic treatment of the wastewater. COD去除率约70%,在厌氧反应器运行过程中,应注意出水挥发性脂肪酸VFA浓度的监测。
The SA-time curve of blood CO2 was measured after the infusion of 14C-acetate into the body through jugular vein catheter. Only the acetate: propionate ratio of the volatile fatty acid mixtures infused into the rumen were changed in different treatments. 改变瘤胃灌注混合挥发性脂肪酸的乙、丙酸比例,测定由血管插管注入14C&乙酸后血液CO2放射比强度(SA)变化曲线。
Study on the relation between volatile fatty acid number and electric conductivity of natural rubber latex 天然胶乳的挥发脂肪酸值与电导率关系的探索
The 72 rice samples which had been stored in different regions for different periods of time were analyzed, and the relationship between the volatile matters and storage time and fatty acid value was investigated. 对国内72个不同储藏区域、储藏时间商品稻谷的脂肪酸值与挥发性物质进行了测定。探索了挥发性物质与储藏时间和脂肪酸值之间的相关性。
The mechanism of thermophilic anaerobic treatment of organic wastewater and the influence of temperature, pH, loading rate, volatile fatty acid and the carrier on the degradation process are discussed. 探讨了使用高温厌氧微生物处理有机废水的机理以及温度、pH值、有机负荷、挥发性脂肪酸、微生物载体等对有机废水处理工艺过程的影响。
The chemical components of the volatile oil and the fatty acid from Coriandrum seeds have been analyzed by GC-MS; 用GC-MS法测定了芫荽籽中挥发油和脂肪酸的化学成分;
Effect of ISCA on volatile fatty acid and cellulose disappearance in rumen ISCA对瘤胃挥发性脂肪酸代谢及纤维素降解率的影响
At the same time, the total volatile fatty acid and activity of fatty acid hydrolyses is increased, but the activity of cellulose hydrolysis enzymes and amylase is decreased. 同时,优氯净使发酵体系的挥发性总脂肪酸含量和脂肪酶活性增加,而纤维素酶和淀粉酶活性降低。
Moreover, total volatile fatty acids were not affected by addition of salinomycin, although propionic acid concentrations were increased as the level of salinomycin increased but butyric acid concentrations were significantly decreased by addition of salinomycin. 总可挥发性脂肪酸并未受到影响,但随着盐霉素的增加,丙酸含量提高,丁酸含量显著降低。
The sensitivity of volatile fatty acid ( VFA) to environment acidity was much greater than pH value, so VFA could reflect the environmental change inside the reactor more accurately and quickly. 挥发性脂肪酸(简称VFA)对环境酸度的敏感程度要远大于pH值,VFA更能准确快速地反映出反应器内部环境的变化。
The experiment studied the anaerobic digestion regularity and the limiting organic load of hogwash waste grease, by monitoring and analyzing the pH value, volatile fatty acid ( VFA), ammonia nitrogen, alkalinity, gas production and gas composition. 本试验通过监测分析系统的pH值、挥发性脂肪酸(VFA)、氨氮、碱度、产气量以及气体组分等参数,研究了泔脚废油脂的厌氧消化规律,寻求废油脂厌氧消化的极限负荷。
Waste activated sludge ( WAS) contains large amounts of organic matter. Hydrolysis and acidification of WAS can reduce the sludge concentration and the production of volatile fatty acid ( VFAs) can be used as carbon source of biological nutrient removal technology. 剩余污泥中含有大量有机物,其水解酸化过程能实现污泥的减量,同时回收利用酸化产物中的挥发性脂肪酸,用于生物脱氮除磷工艺,能有效解决城市污水碳源不足的问题。