I conducted a research in soil. I converted the results from ppm to mg\kg.
I need to compute the lod and loq using the ICH method based on STD Dev of response slope.
But the std solutions were in ppm.
How do I go about this?
Hi, i would like to simulate an absorption process in Aspen Plus. I want to use the NRTL model und would like to add some individual Henry coefficients. Is that possible and how?
05 August 2024 2,333 2 View
I have aquired some mites which have been isolated from feeding trays at a black soldier fly farm. These mesostigmatans are not my primary field of interest, although they are very beautiful. Can...
13 July 2024 10,036 5 View
A recommendation system using a machine learning algorithm gives users the preferred product using a content-based algorithm to satisfy customer preferences, which is well served, and from the...
14 May 2024 7,722 1 View
Dear, Normally the Shannon-Weaver index and Simpson index are correlated. However, in my study on the diversity of 2 bacterial communities following results were obtained. Shannon-Weaver...
10 May 2024 9,248 4 View
I am reaching out to inquire about water benchmark values for specific processes within the potash industry, namely carnallite decomposition, sylvinite washing, and vacuum-cooling crystallization....
20 April 2024 2,473 2 View
I would like to know if Mitutoyo objectives (specifically Mitutoyo Infinity Corrected Long Working Distance Objectives) can be put into vacuum (10^-5 mbar) and without detoriating their...
11 April 2024 2,208 1 View
Objectives: To assess the knowledge levels of livestock farmers regarding livestock health and welfare practices in each regions of PNG. To explore the attitudes of livestock farmers towards...
27 March 2024 1,910 0 View
Research Proposal: Defining Organised Crime for Effective Combatting in South Africa. Why could be the reason for the lack of a clear and universally accepted definition of 'organised crime'. any...
26 March 2024 8,939 4 View
Let M = {v1, v2 ... vn} be an ordered set of minimum number of vertices in a graph G. Then the vector of distances (d(u, v1), d(u, v2) ... d(u, vn)) is called the M -coordinates of a vertex u of...
24 February 2024 3,228 2 View
I am fighting my way through Axelrod and Hamilton (1981) on the Prisoners Dilemma. this is the payoff matrix they present for the PD. But they only present the payoffs for player A. Normally,...
13 February 2024 6,294 1 View
I did DLS size measurement with 10 acquisition got average size is 120 nm and STD is 10 while SEM gave me 100 nm and STD is 35 with exactly 1000 NPs. I am sure about the size of DLS should be...
10 June 2024 7,819 5 View
These days, I am working on peptides. While preparing the standard, I have been facing no detection of peptides in UPLCMSMS analysis. Actual case: Case 1: Water + peptide STD working solution +...
04 June 2024 6,453 0 View
There days I was facing one challenge when doing MD and MV. I need to use rat and pig' plasma as matrix. I used to spike the solvent with different concentrations into the plasma to make STD and...
01 April 2024 3,766 0 View
Hello,Goal is finding concentration of PS20, prepared std curve concentrations of , 25,50,100,150 and 200 ug/mL , after methylene chloride extraction of PS20, and reading at UV spectromete at...
13 March 2024 8,332 0 View
While performing STD screening I noticed that I have signals in my difference spectras, that are constant accross all samples, also if there is no ligand and only protein. The protein was...
18 January 2024 6,932 2 View
In British Pharmacopoeia, the limit of Enalapril impurity D is 1%. However, in ICH has specified that with Maximum Daily Dose 10-100mg (Enalapril Maleat is 40mg), Qualification Threshold would be...
18 November 2023 1,220 1 View
Do i have to revalidate the method using some blank matrix or this matrix effect is acceptable? I performed matrix base calibration(linearity) for validation. All the parameters are well within...
19 June 2023 4,168 6 View
What class of solvent is o-Cresol according to ICH guidelines? Can anyone share some information regarding this?
05 May 2023 1,677 0 View
As per ICH Q1B guideline, photo stability needs to be done until sample is exposed for 1.2 million lux hrs by a light source of 200 watt hr/m2 intensity. But there is no mention of how many...
23 January 2023 8,293 0 View
We are working on a a formulation having Polymer as a bulking agent which is being dissolved in TBA+ water solvent system. We are not getting the residual TBA content as per ICH values upon...
25 December 2022 6,918 0 View