Can I use Ion chromatography for cation analysis of ammonium acetate soil extracts? any methods to reduce NH4OAc background for IC analysis?

any methods to reduce NH4OAc background for IC analysis? or any alternate soil extraction procedures available for cation analysis with IC in order to determine CEC?

02 March 2019 5,127 8 View

Can anyone explain calculation for extractable inorganic nitrogen forms (nitrate and ammonium) obtained via KCl extraction method?

If fresh soil is taken instead of dry soil, do we have to take water content of soil specimen to KCl extractant volume in final calculation i.e. Total volume for calculation = KCl volume + water...

06 July 2018 8,816 4 View

How to determine the porosity of broken brick pieces? Is there any standard test or any method to determine the same?

I need to know the porosity of coarser brick pieces, so that i can determine the working volume of wastewater reactor with media?

02 March 2018 5,163 6 View

Why do we use filter paper of 2 micron or less for VSS analysis, even though average bacteria size is 0.45 micron?

08 September 2017 230 6 View

How can I create an annual trend for chlorophyll a concentration for a coastal location, if availability of data is as stated below?

03 April 2015 1,318 5 View

How might one scale down the reflectance values in the range 0.0 - 1.0 from MODIS land reflectance products?

Scale factor of 10000 is know but values are between -100 to 16000 rather than 0 to 10000 because of atmospheric correction applied.

10 November 2014 6,919 3 View

What is the difference between apparent reflectance and remote sensing reflectance from L2 OC MODIS?

10 November 2014 6,672 3 View

For a beginner using computer modelling in climate science, what are the resources, tools, and languages that need to be learned?

How to start and run a climate model for a beginner?

09 October 2013 7,362 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View