The quantifier for both analyte and internal standard have same product ion, will that have an impact on overall analysis?

Dear Chromatographers, This method was developed on LC MS/MS. The quantifier for both analyte and internal standard have same product ion, will that have an impact on overall analysis. Any...

31 August 2020 1,216 9 View

Is the averaging plot of load-displacement graph is acceptable as the standard deviation of three samples of same specimen is high?

Hello everyone. I have three concrete prisms of the same size and obtained the load-displacement curve of three samples, but the standard deviation is 6.55..i plotted the average graph out of...

25 August 2020 3,968 1 View

What are some landmark texts and papers on agroecology we need to follow for a clear understanding?

We often read a lot about sustainable agriculture or conservation agriculture (or recently, climate-smart agriculture) but it is often difficult (especially for early-stage researchers) to fathom...

08 April 2020 9,212 10 View

How to perform Scanning Electron Microscopy with liquid sample?

How the sample is prepared for SEM analysis in the case of a liquid sample?

05 January 2020 6,517 3 View

Can we get two PL emision peaks for MaPbI3 perovskite film at at excitation wavelength of 450 nm or any wavelength?

If I am getting it, is it an instrumental error? In perovskite film, do we get a excitation dependant PL spectra?

12 October 2019 5,609 2 View

How to calculate the inner diameter of nano-tubes made up of peptide?

How to calculate the inner diameter of peptide nano-tubes made up of peptide? I have seen that people can find the diameter by 3D reconstruction of CRYO-TEM, which is a very specialized technique...

18 August 2018 4,081 4 View

How to distinguish whether the semiconductor material is direct or indirect from optical spectrum?

please suggest me any other experiment (if necessary, other than optical spectra) to identify direct or indirect semiconductor material ?

18 September 2017 9,554 2 View

Graphitization of carbon soot

Graphitization of the carbonized materials1.0 g of the carbonized materials and 0.5 g FeCl3.6H2O were added to 100 mL distilled water. In addition, the pH of the solution was adjusted 2 by adding...

23 June 2017 2,775 4 View

Density-of-states in CuPc ?

03 April 2017 2,884 1 View

What could be ideal packing solvent and slurry solvents to pack the 4.6*100mm- 10um HPLC columns with phases like Ph, DIOL, C4, C1?

01 April 2016 7,271 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Bought HUVEC from Invitrgen.need to revive it.expected it is cryofreezed in DMSO.Do I need to remove the DMSO for plating the cell for the 1st time?

After I cryofreeze the cell do I need to remove the DMSO for culturing the cell for next passages .

28 February 2021 7,738 3 View

For gelatin coating for culturing HUVEC.Should the gelatin be made in sterile water or PBS? Do I need to autoclave the gelatin soln after making it ?

I want to use 0.1% gelatin. Should that be made in PBS or sterile water? Should I autoclave the gelatin soln after making it in water/PBS?

28 February 2021 274 2 View

Is there any published or unpublished statistics on dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, US, UK or any other country?

Are there any published or unpublished statistics or papers on the dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, USA, UK, or any other country where vaccination has started at...

28 February 2021 4,237 1 View

Why do my MCFs not form monolayer?

Hello, I am looking for some expertise on culturing MCF7s. I purchased them from ATCC and I have been following all media and culture conditions. Media is EMEM with 10% FBS and 10ug/mL of...

27 February 2021 3,904 2 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

Any Differences in COVID-19 vaccines?

Are there any differences (outside of the clinical trials that led to their EUA) observed in the rate of infection among those who have received the Pfizer vs Moderna vaccine since the mass...

22 February 2021 9,727 6 View

How to find natural frequency of a bridge from vehicle induced vibrations?

i have frequencies of bridge that are effected by mass of vehicle. the problem is when any vehicle pass the bridge it would add the its mass to the bridge mass ultimately mass of the bridge will...

22 February 2021 10,004 3 View

Help with culturing monolayer of human brain microvascular endothelial cells (hBMEC)?

I've been having a hard time forming an endothelial monolayer with good tight junctions. The person who trained me on the culture of endothelial cells worked mostly with mouse BMEC, and he used...

22 February 2021 8,253 1 View