查询词典 biochemical

Biochemical Oxygen Demand is an important control index in wastewater effluent ,but it takes longer time(5 days)for its determination,while the time for measuring the Chemical Oxygen Demand is shorter(10 hours).

生化耗氧量是废水排放的重要控制指标，但它的测定需要时间较长，而化学耗氧量的测定时间较短，这两者是否存在稳定的关系？

Determination of biochemical oxygen demand after n days.

NF T90-103-2-1998 水质。N天后对生化氧需求的测定。

Generally aerobic and anaerobic wastewater treatment plants require substantial areas of land for the effective treatment of liquid waste streams to achieve very low levels of Biochemical Oxygen Demand and Chemical Oxygen Demand reduction.

通常，好氧和厌氧的废水处理设备需要大量土地以进行有效的废液处理，把生化需氧量和化学需氧量减少到非常低的程度。

The oxygen consumed,or biochemical oxygen demand,is proportional to the organic matter converted ,and therefore BOD is a relative measure of the biologically degradable organic matter present in the system .

氧消耗量，或生化需氧量，是成正比的有机质转换，因此，生化需氧量是一个相对的措施，生物可降解的有机物，目前在该系统。

Biochemical oxygen demand, BOD is necessary for water quality evaluation.

根据生化需氧量公式y=L1=La(1-e-k12y)，且1/3-y是线性关系，由直线的斜率和截距便可以求出耗氧系数k1和水中总的生化需氧量 La。

The results showed that the IVCW effectively removed total suspended solids(85%),chemical oxygen demand(50%),five-day biochemical oxygen demand(44%),total ammonia(53%),nitrite(83%) and nitrate(54%) from the aquaculture wastewater at a hydraulic loading rate of 420mm/d.

结果表明，在420 mm/d的水力负荷下，湿地可有效地去除循环水中的总悬浮物(去除率85%)、CODCr(去除率50%)、BOD5(去除率44%)、总氨氮(去除率53%)、亚硝酸盐(去除率83%)和硝酸盐(去除率54%)，能够满足养殖用水的要求，整个试验期间系统实现了零污水排放。

The results showed that the IVCW effectively removed total suspended solids (85%), chemical oxygen demand (50%), 5-day biochemical oxygen demand (44%), total ammonia (53%), nitrite (83%) and nitrate (54%) from the aquaculture wastewater at a hydraulic loading rate of 420mm/d.

结果表明，在420mm/d的水力负荷下，湿地可有效地去除循环水中的总悬浮物(去除率85%)、CODCr(去除率50%)、BOD5(去除率44%)、总氨氮(去除率53%)、亚硝酸盐(去除率83%)和硝酸盐(去除率54%)，能够满足养殖用水的要求，整个试验期间系统实现了零污水排放。

Abstract］ Objective: To investigate factors in water-dilution affecting the determination results with biochemical oxygen demand （BOD5） standard dilution method, so as to improve the sensitivity and accuracy, and to provide rational suggestion for further study.

作者：张震，金庭旭，张华，方世杰目的：旨在寻找生化需氧量标准稀释法测定中稀释水的一些影响因素，提高测定的灵敏度与准确度，为今后的教学研究提供一定的参考。

Methods Physiological and biochemical parameters of the blood were determined to detect liver function. Membrane protein and nuclear protein were isolated from the liver tissue of BDL rats.

胆总管结扎术法制备大鼠梗阻性黄疸模型，检测肝功能；提取大鼠肝细胞膜蛋白与核蛋白，测定提取液蛋白浓度；采用Western blot技术检测MRP3和Lrh-1蛋白表达。

Methods Physiological and biochemical parameters of the blood were determined to detect liver function. membrane protein and nuclear protein were isolated from the liver tissue of BDL rats. The protein expressions of MRP2 and FXR were determined by Western blot.

用胆总管结扎术方法制备大鼠梗阻性黄疸模型，检测肝功能；提取大鼠肝细胞膜蛋白与核蛋白，测定提取液蛋白浓度；采用Western blot技术检测MRP2和FXR蛋白表达。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。