Three questions concerning the realization of antiurolithiatic activity ?

04 August 2016 2,496 1 View

I-V curves obtained from STM measurements for ZnO nanowires?

I am looking for papers containing I-V curves obtained from STM measurements for ZnO NWs? (not for individual or twin NW) For ZnO nanowires, I haven't found a paper containing I-V curves obtained...

06 August 2012 5,560 2 View

How can I quantify the color of a solution?

I know colorimetry has been the standard way by way of measuring the concentration of a particular compound (solute) in a colored solution (solvent or measure quantities of a particular compound...

08 February 2021 2,673 1 View

Can someone explain why my A260/A280 ratio is lower than 1?

We are conducting a measurement of Ribonucleic acid from baker's yeast (S. cerevisiae) (Sigma-Aldrich R6750) concentration using Eon Biotek Microplate reader. We dilute the RNA in various...

24 January 2021 9,830 3 View

Anionic sulfate complexes of rare earth elements, are they real?

Can you please tell me if there are anionic sulfate complexes of rare earth elements? And, if so, can you advise sources where you could read about it. Thank you!

17 January 2021 8,812 2 View

Requesting protocols (96 well plate) for superoxide radical scavenging activity and hydroxyl radical scavenging activity?

Hello everyone, I am currently working on the natural colour pigment, betalains. I am looking for 96- well plate adopted assay protocols for measuring superoxide and hydroxyl radical scavenging...

03 January 2021 2,414 2 View

Should I normalise data when measuring fluorescence intensity ?

I'm measuring fluorescence intensity of the product in an enzyme reaction in 37 celsius degree. I set a kinetic measurement in 1 hour. The fluorescence intensity of the BLANK ( contains only...

03 January 2021 5,554 5 View

.In my results the slope of curves got from Microplate reader is seems less (less than 1) and negetive some times. What is the reason for that?

In my research I'm enumeraring the florescence intensity (FI) Vs E-coli concentration in river water. I measure FI by Tecan I control 200 pro and E-coli by Membrane filtration.

03 January 2021 2,991 3 View

Is it possible that non-sea salt fraction has negative value?

Hi, I'm trying to calculate sea salt and non sea salt fraction from water soluble ion data (anion and cation). I calculate sea salt fraction by using using ssNa+ as specific marker and knowing the...

29 December 2020 9,813 9 View

Is it better to normalize Nile red absorbance to Bradford assay or to cell number?

I stained the fat droplet inside the cell using Nile red and read the absorbance by a microplate reader. Which better to do, normalize the Nile red absorbance to Bradford assay or to cell...

12 December 2020 8,036 2 View

1H NMR of alkoxides in CD2Cl2?

Hello! I am planning to get an alkoxide which should be potentially soluble in CH2Cl2. Do you think it is okay to use CD2Cl2 to get an NMR spectrum of the alkoxide? I am wondering if RO- anion...

25 November 2020 1,819 1 View

How to analyze sodium lauryl sulfate using HPLC-RID?

Hi, I am analyzing the content of anionic surfactant: sodium lauryl sulfate (SLS) in commercial detergents using HPLC-RID/refractive index detector. I used column Agilent Zorbax Eclipse XDB C-18...

15 November 2020 1,405 2 View