Refine by
Linearity Test Articles & Analysis
36 articles found
Accurate emissions data starts with calibration. In highly regulated sectors like power generation, petrochemicals, cement production, and waste incineration, even a fraction of error can lead to costly violations. That’s why reliable Continuous Emissions Monitoring (CEM) calibration systems are crucial for keeping facilities in line with environmental standards. Environics Inc. delivers ...
Gas Chromatography (GC) method validation is a cornerstone of analytical chemistry, ensuring that quantitative analysis methods are reliable and accurate. As scientists, we know that precision is non-negotiable, especially when dealing with critical applications in industries such as pharmaceuticals, environmental monitoring, and food safety. High accuracy standards are not just a recommendation; ...
ICP-OES has the advantages of high sensitivity, fast analysis speed, small matrix effect, wide linear range, simultaneous analysis of multiple elements, no specific requirements for sample shape, etc. ...
Goldberg,S.A, Mason, P.B., Traina, A.J. Schweiters, J.B. 2001. Linearity tests for secondary electron multipliers used in isotope ratio mass spectrometry. ...
Why the USP 1788 update? New flow imaging technologies and therapeutic protein solutions widened the scope of USP 1788. Three primary technologies are discussed in each of the sub-parts of the guidance document: Light Obscuration (LO) is still the preferred first pass method for the USP Normative chapters. If a solution is unable to be tested using LO, either due to clarity (color, opacity) ...
Linear Regression (Parametric Methods to Test and Model Trends) Linear Regression is a parametric (the data that meet the assumption of normality) test that predicts the value of a variable based on the value of another variable (Chan, 2004). ...
Abstract : The acute toxicities of the first 50 chemicals (dextropropoxyphene hydrochloride excluded) of the multicentre evaluation of in vitrocytotoxicity (MEIC) programme were determined on four aquatic invertebrates and a bacterial strain (Photobacterium phosphoreumfor the MicrotoxTM test) commonly used in ecotoxicology testing. Three of the aquatic ...
There are no interferences on 10 compounds which can potentially interfere with benzene in compliance with EN 14 662-3 List of the 10 potential interfering compounds with Benzene. The analyzer is LINEAR: range 0 / 100 ppb (0/325 μg/m3) (see doc airmoBTX / airmoVOC C6-C12, Linearity and repeatability Test). ...
Computations are performed with both an ideal homogeneous hydraulic conductivity and a realistic heterogeneous one. The tangent linear codes are validated using Taylor tests performed on the head and the velocity field. ...
There are no interferences on 10 compounds which can potentially interfere with benzene in compliance with EN 14 662-3 List of the 10 potential interfering compounds with Benzene. The analyser is LINEAR: range 0 / 100 ppb (0/325 μg/m3) (see doc airmoBTX / airmoVOC C6-C12, Linearity and repeatability Test). ...
In this study, trend analysis and analysis of the short-term variations in annual streamflow and sediment load in the Yanhe River Basin (YRB) during the period 1972–2011 were conducted using linear regression and the Pettitt test. The Soil and Water Assessment Tool (SWAT) was employed to simulate the hydrological processes. ...
The unique ELITe InGenius design confers an unrivaled flexibility in comparison to other sample-to-result solutions enabling the laboratory to define and customize panels of tests including multiple PCR from one extracted sample simply on demand. ...
The long-term annual trends of rainfall and river flow were analyzed via Mann–Kendall's statistical test and linear trend analysis. Climate data on rainfall trend showed a significant decreasing pattern during the last 17 years. ...
Classification and measurement of these unwanted distortions is discussed below. Linear vs. non-linear distortion A linear distortion is defined as a change in amplitude or phase with no new frequencies added. ...
The internal relationship between summer temperature (ST), annual precipitation (AP), annual mass balance (AM) and annual runoff (AR) of Glacier No.1 from 1959 to 2006, a so-called ‘summer accumulation type’ glacier, was examined with several statistical methods including simple linear regression, the Mann–Kendall test and wavelet analysis. In total, ST, AP ...
In the current study, Daphnia magna populations were initiated with different levels of intraspecific competition, interspecific competition and predation and exposed to pyrene pulses. Generalized linear models were used to test which of these factors significantly explained population size and structure at different time points. ...
The execution time of our method is very fast, and linear in the terrain size. Tests have shown that our method can process huge terrains more than 100 times faster than other recent methods. ...
The nonlinear mathematical problem is based on energy and mass conservation laws which is solved by using global linearization techniques, such as global gradient algorithm (GGA). The matrix of coefficients of the linear system inside GGA belongs to the class of sparse, symmetric and positive definite. Therefore a fast solver for the linear ...
The scarce of coking coal resources in China results in its short supply. By establishing a grey linear regression composition model, this paper has greatly improved the inadequacy of grey system prediction model and regression analysis method in trend prediction and finished the prediction of demand trends of coking coal in China with this model. As result of the prediction, it ...
An approach to predicting the bioconcentration factor (BCFPRE) from the predicted uptake rate constant (k1Pre) and the depuration rate constant measured in the dietary exposure bioaccumulation fish test (k2Dietary) [BCFPRE = k1Pre/k2Dietary] is proposed in the test guideline 305 of the Organisation for Economic Co‐operation and Development Guidelines for ...