Rhizosphere sampling techniques in sandy soils?

I need to sample soil around 2 m high shrubs - so no 'pullup the plant and shake of the soil' will work. These plants have taproot systems of 2m deep. My idea is to compare the microbes in the...

29 April 2019 8,556 3 View

Information on sediment loads in KZN rivers?

Although information on total annual sediment loads is available I have been unable to find information on how seddment loads are distributed throughout a typical hydrological year.

16 September 2018 1,013 3 View

How to settle clay particles in soil solution for Biolog Ecoplate?

I have claye soils that I want to use Biolog Ecoplates on. Can I use CaCl2 (1ml of 1M in 100 ml of 10% soil solution) to settle the soil? Or maybe centrifuge (5000 rpm for 1 min)? I do not want...

31 October 2017 9,482 1 View

Any reasons for low Vitamin A (palmitate) recoveries from Infant Milk Formula?

23 August 2016 2,849 5 View

Need help in extracting DNA from ticks using Kapa Express extract kit?

To start of I am trying to isolate DNA from blood and ticks for the identification of the tick species and a parasite that is transmitted by the ticks, by running it through agarose gel, and a...

01 January 1970 1,451 3 View

Dear all, I was wondering if anyone knows whether MGLtools and Autodock can run on Mac OS?

I have tried to download the 64-bit version of MGLtools however, as many times as I have downloaded and uninstall the programs, an error arises that the app needs to be updated. Thank you.

03 March 2021 5,997 2 View

I got 02 moderator values defining Johnson-Neyman significance regions. Is it an error?

Hi everyone, I am conducting research for my Master's thesis. I am using PROCESS by Johnson-Neyman to analyze my Moderator model. I test the relationship between Public Service Motivation and...

03 March 2021 2,350 2 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

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

PACYC PCR not working after several attempts. Would anyone have any suggestions?

So, I have been trying to run a pACYC PCR which will be used later on for a Gibson Assembly. However the PCR is not working. I have already tried gradient PCR and changing extension time; however...

02 March 2021 1,146 2 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

OpenBCI eeg--has anyone used them?

I'm looking to try out an off-the-shelf EEG set for some exploratory work. Curious if anyone has used the OpenBCI, and how much set-up work is required. I've heard they are more difficult to get...

01 March 2021 4,128 3 View

Is there any expert in Smart PLS who can help me?

Dear colleagues, I have a manuscript that needs an expert in smart PLS to run the analysis, Is there anyone expert and ready to help me, please?

01 March 2021 8,212 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

How to run Cross-lagged panel Design on AMOS?

25 February 2021 3,126 1 View