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   rapid measurement 在 农业基础科学 分类中 的翻译结果: 查询用时:0.236秒
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rapid measurement    
相关语句
  快速测定
    Study on Rapid Measurement Methods for the Nutrient Contents of Dairy Manure
    快速测定奶牛粪便肥料成分含量的方法研究
短句来源
    Rapid Measurement of Iodine in Soil by Ion Chromatography
    离子色谱法快速测定土壤中碘量
短句来源
    (Traditional) methods cannot satisfy the demand of the wastewater detection for its high cost,long time,and(second) pollution. A rapid measurement method was put forward in this paper by using spectroscopy techniques.
    随着环境污染问题的日益严重,传统的测量方法由于存在分析成本高、时间长,并且还会造成二次污染等问题,已经不能够满足污水检测的需求,提出了采用光谱技术进行畜禽污水COD快速测定的方法。
短句来源
  快速测量
    An instrument is designed for rapid measurement of temperature and moisture of soil in field soil.
    为快速测量大田土壤温湿度,而设计的仪器,湿度测量采用电容法。
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  rapid measurement
A relatively simple indentation technique for the rapid measurement of fracture surface energy, Γ, of small samples is described.
      
A method for rapid measurement of HeLa cell destruction by cytopathic poliovirus based upon alterations of the rate of oxygen uptake of infected cell populations is presented.
      
Rapid measurement of young's modulus on short strips of amorphous metals using the piezoelectric ultrasonic composite oscillator
      
Systems for rapid measurement, data analysis and storage designed for the experimental work are presented.
      
Densitoviscometer for rapid measurement of the density and viscosity of melts of salts and alkali
      
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An instrument is designed for rapid measurement of temperature and moisture of soil in field soil. The moisture is measured with capacity method. Measuring code was linearized after non-electric quantity was converted by anatlog-to-digital conversion and the EPROM tabulated data. An integrated temperature sensor AD590 is adopted.

为快速测量大田土壤温湿度,而设计的仪器,湿度测量采用电容法。非电量经A/D转换后,通过EPROM制表的方法,实现了数据线性化。温度传感器采用AD590。

The chromatographic separation and measurement conditi on s of iodine are optimized. Rapid measurement of iodine in soil is thus achieved with protective column IonPacAG11. The detection limit of the method is up to 0. 04 μg/g (3 times of standard deviation). Trace iodine in 8 certified reference materials was measured with this method, which gives results in conformity with the standard values, with relative standard deviation (RSD) less than 10% (n =12). The method is proved feasible and applicable...

The chromatographic separation and measurement conditi on s of iodine are optimized. Rapid measurement of iodine in soil is thus achieved with protective column IonPacAG11. The detection limit of the method is up to 0. 04 μg/g (3 times of standard deviation). Trace iodine in 8 certified reference materials was measured with this method, which gives results in conformity with the standard values, with relative standard deviation (RSD) less than 10% (n =12). The method is proved feasible and applicable to measurement of iodine fo r large batches of geochemical samples.

优化了碘的离子色谱分离和测定条件,仅使用保护柱IonPacAG11柱,即可快速测定土壤中的碘。方法检测限0. 04μg/g(3倍的标准偏差),测定了8个国家一级标准物质中的痕量碘,验证方法可行性,并且结果与标准值相符,相对标准偏差(RSD)小于10% (n=12)。该方法适用于大批量化探样品中碘量的分析。

Chemical oxygen demand(COD) is an important index in evaluating the pollution degree of the wastewater.(Traditional) methods cannot satisfy the demand of the wastewater detection for its high cost,long time,and(second) pollution.A rapid measurement method was put forward in this paper by using spectroscopy techniques.A total of 18 wastewater samples with different concentrations(1000 mL,2000 mL) were measured using the ASD Handheld FieldSpec spectrometer.The results from both spectral absorbance and COD...

Chemical oxygen demand(COD) is an important index in evaluating the pollution degree of the wastewater.(Traditional) methods cannot satisfy the demand of the wastewater detection for its high cost,long time,and(second) pollution.A rapid measurement method was put forward in this paper by using spectroscopy techniques.A total of 18 wastewater samples with different concentrations(1000 mL,2000 mL) were measured using the ASD Handheld FieldSpec spectrometer.The results from both spectral absorbance and COD values in wastewater show that there are high correlation coefficients between spectral features and COD values.The partial least square regression models were therefore developed.The r~2 values between measured and predicted values of COD in wastewater with containers of 1000 mL and 2000 mL were 0.9895 and 0.9985,the standard errors of calibration were 14.2 and 11.5,and standard errors of prediction were 22 and 32,respectively.The relative standard deviations for unknown samples were below 10%.The tested precision can meet the requirements of the application in agriculture engineering.Compared with standard chemical method,it indicates that the spectroscopy technique can be applied in the quantitative analysis of COD in livestock wastewater,and the predictive model for COD provides a basis for developing potable instrument to detect water quality on line.

化学需氧量(COD)是评价水体污染程度的一项重要综合性指标。随着环境污染问题的日益严重,传统的测量方法由于存在分析成本高、时间长,并且还会造成二次污染等问题,已经不能够满足污水检测的需求,提出了采用光谱技术进行畜禽污水COD快速测定的方法。采用A SD公司的便携式光谱仪,选用容积分别为1000 mL和2000 mL的烧杯作为盛样容器,对18个不同COD浓度水平的污水样本进行了测量。通过吸光度与水样COD值的相关性分析表明,水样的光谱特性与COD值之间存在较好的相关性,以此建立偏最小二乘回归模型。结果表明,两种不同盛样容器(1000 mL、2000 mL)下的预测决定系数达到0.9895和0.9985,校正样本标准偏差为14.2和11.5,预测样本标准偏差为22和32,预测相对偏差均在10%以下,能够满足农业工程应用的要求。说明可以利用光谱技术对畜禽污水的COD含量进行定量分析,COD预测模型的建立也将为开发水质在线检测仪器提供技术基础。

 
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