What are the simple methods available to determine the concentrations of thiosulfate and polythionates, except HPLC method?

More Nirmala Ilankoon's questions See All

How to calculate CFU/m3 in settle plate?

14 July 2024 1,816 1 View

How do we connect Behavioural Economics, Emotional Models and Consumer Psychology to Design an Applied Neuromarketing Practice?

I would like to explores the connection between behavioural economics, emotional models, and consumer psychology to design an applied neuromarketing practice. The study aims to bridge the gap...

11 June 2023 1,536 9 View

Less pellet during high copy plasmid isolation from maxi prep?

I used qiagen maxi prep kit for plasmid isolation, but I have a issue in the pellet. Though it is a high copy number plasmid, very less pellet is obtained. Is there a reason for it?

04 July 2022 1,153 0 View

Can anyone suggest me a good source to find LCI of smart box/energy box use in PV off-grid power system ?

Smartbox or energy is an important item of a solar power system. I would be grateful if someone can help me/suggest a literature source to find life cycle inventory of the smart box. Thanks.

25 November 2020 1,839 1 View

Can anyone suggest me a good literature source to find inventory data of rigid polyurethane sheet recycling ?

Polyurethane insulating foam plays key role in energy-efficient cooling systems such as storage in cold stores, local storage in supermarkets, and domestic refrigerators. In LCA assessment of...

13 November 2020 6,515 3 View

How to calculation refrigeration load of a direct solar drive refrigerator ?

In recent years a new development happened in solar refrigerator design by eliminating expensive and problematic energy storage batteries. The technology so-called, direct-drive refrigeration...

06 November 2020 3,367 3 View

Is it possible to get a small heater 30*30 mm size, which can work up to 200 degrees C?

Is it possible to get a small heater 30*30 mm size, which can work up to 200 degrees C? As part of my research, I need a small heater 30*30 mm size with the thermostat, which can work up to 200...

15 September 2020 8,987 3 View

I am working on circular polarization, can you help me how to plot axial ratio and radiation patterns for resonance frequency?

I am working on circular polarization, can you help me how to plot axial ratio with respect to frequency and radiation patterns for a resonance frequency?

24 April 2020 7,746 0 View

Is it possible to deposit YMnO3 thin films by e-beam technique?

I have YMnO3 (yttrium manganese oxide) in powder or pellet form.

09 December 2019 2,633 0 View

Design equations for microstrip lines?

I am working on designing of microstrip lines and its behavior with ebg structures. i am unable to find the design equations for microstip line length and width for a particular resonance frequency.

23 September 2019 5,773 1 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Can you connect an HPLC to a Mass Spec only at a certain time point?

Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...

11 August 2024 8,141 3 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

Why is electronic energy 0.000 for liquid crystal compounds and is invariable with temperature in Guassian 09 software?

Are there any suggestions or insights you can provide to help address this problem

06 August 2024 1,443 2 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

How can we use mobile apps for improving students' academic performance?

Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance

04 August 2024 9,492 0 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

Is there any Indian Company or Startups, from any universiy or IITS, which manufacture Gas Chromatography instrument , i want to make a custOmized G?

or we can collaborate

01 August 2024 6,705 2 View