Can you determine silicon content using ICP-AES?

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How can one calculate the magnetic correlation length from neutron powder diffraction data?

Is it possible to extract the magnetic correlation length from the low-temperature magnetic structure refined using neutron powder diffraction data? Is it related to the FWHM of the magnetic peaks?

18 December 2022 9,469 2 View

How to correctly take UV-vis spectra of POPC liposomes and interpret the results?

Hello everyone, I am new to liposome characterization and hope to get your insights about an experiment I am running. I took UV-vis spectra for POPC liposomes (undiluted and a set of dilutions...

30 August 2022 7,643 0 View

How to label POPC liposomes with DPH to measure fluidity using fluorescence polarization?

Hi everyone, I have been using this technical note from BMG Labtech (https://www.bmglabtech.com/en/application-notes/membrane-fluidity-measurement-using-uv-fluorescence-polarization/) and trying...

08 August 2022 3,458 2 View

How to calculate initial velocity of an enzyme from RFU vs time graph?

Hi everyone, I have been trying to calculate the Km value of a recombinant HCV NS3/4A protease using a FRET substrate, the cleavage of which can be detected at 500 nm using excitation wavelength...

22 December 2021 4,709 14 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 2,362 2 View

"WaitFlag Error" in SR785 Dynamic Signal Analyzer followed by automatic reboot?

My SR785 Dynamic Signal Analyzer keeps rebooting after showing a "WaitFlag Error" in between measurements. I have been unable to find any mention of this error in the service/user manuals...

23 December 2020 8,698 2 View

Is there any fixed value of nucleaion rate & growth rate during recrystallization for pure metals at a given %reduction and annealing temperature ?

Part-1: Recrystallization kinetics is given by JMAK equation which is written as Xᵥ=1- exp(-Btᵑ ), where B=fṄĠ^3; Ṅ= rate of nucleation; Ġ = Velocity of high angle grain boundaries which is...

02 September 2020 3,464 2 View

Can someone guide me to articles/ books which discuss thermal hysteresis in solid/gas phase transition system?

Phase transitions are associated with thermal hysteresis. I am trying to understand the origin of thermal hysteresis in specifically solid/gas (gas/solid); sublimation and deposition; and how can...

30 June 2020 2,977 0 View

Does liquid vapor transition and vapor liquid transition show thermal hysteresis?

Thermal hysteresis in liquid solid can be defined by undercooling. I am looking into thermal hysteresis in gas liquid phase transition.. is that possible? I cant seem to find any literature on this

23 June 2020 3,983 7 View

In case of MSCR test, at a certain stress level, should we consider average of the 10 results obtained for % recovery?

The results which I have obtained for % recovery decrease continuously and significantly with each cycle of loading, particularly for stress level 0.1 Kpa. So considering the average does not seem...

19 September 2019 1,504 1 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

How to prepare the nanoparticle treated fungal sample for Environmental SEM analysis?

A fungal strain was treated with nanoparticles. We want to do an environmental SEM analysis. So could anyone share your views on preparing the sample? Thank you.

07 August 2024 5,307 1 View

Why do i have a weak plasma and no coating during rf sputtering?

I have been getting a low plasma and no coating while doing rf sputtering of copper doped ZnS using a power of 140 watts and at pressure of 6.5x10-3 Mb.

07 August 2024 4,526 4 View

How much total RNA concentration to be extracted from sorted plasma cells from bone marrow of C57BL/6 mice for RT-PCR ?

i have sorted anti-NP specific plasma cells from bone marrow of C57BL/6 mice at certain times after immunization with variable counts and isolated total RNA using TRIZOL method for RT-PCR using...

05 August 2024 8,835 1 View

How can major oxides determined by ICP-MS/ES be normalized to 100% volatile free? How does this connect with LOI?

I am analyzing cherts from different sources found within one specific geologic formation using ICP-MS/ES. My committee was asking this question about my analysis. I was not sure how to answer this

05 August 2024 7,902 3 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Binder for ZnO nanoparticles in graphite paste electrode?

I have been using paraffin, but the deposited ZnO still detach from electrode. What is the best binder to modify graphite paste electrode with ZnO nanoparticles?

03 August 2024 4,624 3 View

Can i quantify a nanoparticle encapsulated in cell culture medium by hplc?

Hello, if you made a transwell assay where you incubate the cells with a nanoparticle-encapsulated drug and considering that in the oposite compartment you'll have both the free and encapsulte...

03 August 2024 2,730 1 View

In the presence of VERY high concentration (1000 ppm) of silicon, the adsorption isotherms of arsenic are showing anomalous trends, why so?

I conducted an adsorption experiment of arsenic on soil in the presence of different doses of silicon as competing ions to see the effect of silicon on arsenic adsorption and desorption. I took 5...

03 August 2024 6,500 3 View