HPLC separation for methyl salicylate, camphor, thymol and menthol?

I have been recently trying to develop a method to separate the above compounds. Most methods tried were adapted from literature using RP C8 or C18 column with ACN/MeOH and buffered water at pH 2...

28 December 2020 4,426 6 View

How much the nanoparticles reach the inflammatory tissue?

Dear colleagues, I want to know the average analysis data of EPR effect on inflammatory tissue (acute lung inflammation/injury, ischemia/reperfusion, rheumatoid arthritis, and sepsis..) In...

22 December 2020 3,147 2 View

How to measure the bonding strength of transfered graphene on PDMS substrate?

Chemical vapor deposition (CVD) was used to grow graphene on copper (Cu ) substrate, then the single layer graphene was transfered onto a PDMS substrate. I want to measure the bonding strength of...

17 October 2020 3,567 3 View

How is the quality of archived blood sample for HbA1c test?

HbA1c is an important indicator of long-term glycemic control with the ability to reflect the cumulative glycemic history of the preceding two to three months. Also, HbA1c is measured as the ratio...

16 September 2020 2,423 4 View

How to define the particle agglomeration in composite materials or foundry alloys and measure its size distribution quantitatively?

28 June 2020 7,614 3 View

What form of Mg will be selected during the purification of prokaryotic expression protein?

Hello everyone Recently I wanted to purify several proteins by prokaryotic expression, I read some related literature and found that Mg is needed in the protein purification buffer. I am a little...

02 May 2020 931 3 View

Does anyone know how to prepare inside-out membrane vesicles from animal tissue?

I would like to do some transport assays using tissue from mice that I have experimentally perturbed

12 March 2020 2,350 4 View

Free acid and its salt, can HPLC-PDA-MS tell its difference?

I have a free acid R-COOH and its salt R-COOM. Both are insoluble in water but soluble in methanol. When their methanol solutions are injected into a HPLC-PDA-MS system, are they going to have the...

06 March 2020 4,952 4 View

Sodium chloride solution saturated vapor pressure at sub zero temperature?

Can anyone suggest where to find the data or any equations related to the salt solution vapor pressure at sub-zero temperature? Many thanks!

24 December 2019 7,741 2 View

[Systematic Reviews] What to do if publication bias exist?

When doing the systematic reviews, if you I confirmed a publication bias during meta-analysis, my questions is what to do next? I though to add discussion about the publication bias, but I want...

17 November 2019 5,634 4 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 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

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View