Can i make use of Potassium ferrocyanide in place of potassium ferricyanide in the assay of sterol color development for UV-Vis spectrophotometer reading. using it along with sulfuric acid and FeCl3.
I want to analyze rumen fluid samples in aqueous state for volatile fatty acids on a GC-FID. We only have a Bpx70 column. Can this column be use?
24 September 2020 7,901 4 View
I want to prepare Volatile fatty acids standard mixture from individual acids bought from Sigma Aldrich. I have seen different volume mixture contradicting. I need a standard procedure/ volume...
17 September 2020 2,366 3 View
Phytochemical analysis of plant extract, tannin proportion
10 November 2018 6,822 1 View
i want to know the step by step process and how to eventually construct the graph and calculate the Quantity of the phytochemicals from the curve in mg/g
03 January 2018 9,594 3 View
31 December 2017 6,935 3 View
I extracted plant material using 80% ethanol and i want to dry the extract. I have condensed the the extracts on water bath to remove some of the solvent.I put the thick extract in the freezer but...
10 November 2017 8,565 8 View
Please can any one recommend Phronesis LLC conferences. I am about to register for their ICASVM 2020 conference, so I decide to ask for recommendations
01 January 1970 3,647 1 View
I have a response variable called skin yellowness, which I will measure via a scored color chart, whereby 1 is pale yellow and 15 is orange. I'm not sure if this counts as an ordinal variable,...
11 August 2024 4,793 1 View
I am currently investigating the cytotoxicity of a series of herbal extracts, and like many studies, I have been using the MTT assay to evaluate cell viability. However, I am encountering a...
31 July 2024 193 4 View
Using SPSS, I made my edits in one bar chart — e.g., font type and size, hiding grid lines, and colours, namely: blue, orange, green, purple, and grey for 5 bars, respectively, etc. — and I saved...
29 July 2024 1,981 1 View
Genome-wide association study (GWAS) Continuous traits: eg. Height Discrete traits: eg. Eye color
28 July 2024 286 0 View
Hi, Now I am doing a single-base editing by using HiFi Cas 9, guideRNA, single stranded DNA, HDR Enhancer V2 and my tranfection mehtod is lipofection (RNAiMax). Unfortunately, after gene editing,...
26 July 2024 2,136 0 View
I used Aqua regia to clean Au nanoparticles in the used glassware. But for some reasons, it is not heating up upon mixing. The color did change from no color to light orange. The Au NPs on the...
25 July 2024 4,390 0 View
Despite not having cells in the media, I am getting purple color. I have tried many troubleshooting methods, varying media types, and even different MTTs from different companies to figure out the...
21 July 2024 9,914 1 View
Hello everyone, I am currently working on a project where I aim to analyze color preferences in data visualizations across participants from three different countries. The dependent variable in...
19 July 2024 4,178 2 View
Sulfuric acid has changed color to yellow.
16 July 2024 6,964 0 View
Please help me in plotting the photon-magnon coupling plot as shown below
14 July 2024 1,632 1 View