How to make sure that ultrasonic lysis of E.coli is done completely?

What's the criteria of comolete lysis of E.coli when breaking them using ultrasonic? What phenomena can help to determine if the cell are broken completely? From smell, transparence of the lysis...

07 January 2021 1,911 3 View

What is the difference between "pesticides" and "insecticides"? Are they same?

What is the difference between "pesticides" and "insecticides" in English? Are they the equivalent replacement when used in text? I am an ecological researcher who particularly concerns the...

04 January 2021 6,230 37 View

Ungrounded CPW fed slot-ring patch antenna not behaving as an antenna in CST simulation?

Greetings everyone, I am attempting to model and simulate a slot-ring patch antenna fed by ungrounded CPW in CST, although the S11 is fine, the e-field and h-field monitors shows strange...

10 October 2020 2,228 2 View

Can we perform MOX/MSTFA derivatization in Eppendorf tubes?

Hi there! Recently I am planning to work on metabolomics using GC-MS, where derivatization is a crucial step. Here, I am wondering if that possible to derivatize extract samples with both MOX and...

24 September 2020 9,695 1 View

What is the right time course when using cycloheximide to inhibit protein synthesis?

I'm going to use cycloheximide to inhibit the synthesis of a membrane protein in HEK-293T cells, but I'm not sure the right time that needed to treat cells without influencing its viability. I...

21 September 2020 4,321 2 View

How to eliminate the warning of 'position not found when parsing line' during DAMASK simulation with ABAQUS/standard?

Hi, I am trying to use the ABAQUS/standard solver to simulate the single crystal deformation behaviour with DAMASK framework. The materials is BCC ferrite with hooke elasticity and phenopowerlaw...

10 December 2019 4,667 1 View

What is the yellow/brown salt crystal during protein crystallization?

During protein crystallization screening, we encountered several types of proteins grew yellow stick crystals with a reservoir containing 0.1 M BIS-TRIS pH 6.5, 2.0 M Ammonium sulfate. However,...

09 January 2019 2,188 1 View

Does anybody know any company manufacture cyclic olefin polymers: COP (except Zeonex/Zeon)?

Want to try COP from different vendors! Is there any one in China? Thanks!

24 April 2018 8,736 2 View

What is a quick and easy screen for visualizing the presence of gold nanoparticles?

Hi all, I am trying to design a hypothetical screen to find additional genes that are responsible for C. metallidurans' ability to reduce gold ions (Au(I) and Au(III)) to solid gold nanoparticles....

12 February 2018 7,511 2 View

One virus may have two different kinds of particle?

15 February 2017 676 10 View

How to modify micro-structure of Pure Copper which is available as a flat plate of 25 X 25 sq. cm?

Hi everyone, for a thesis project I have to modify the micro-structural properties of pure Cu flat plate of dimension 25 X 25 sq. cm . As I tried searching the available literature, I found a lot...

09 February 2021 5,090 3 View

What is the most efficient way to generate amorphous silica in LAMMPS?

I would like to generate multiple large samples of amorphous silica in LAMMPS. Currently I am generating it by beginning with a lattice of silicon and oxygen atoms and using a melting and...

28 January 2021 6,128 4 View

Is it possible to economically reuse the heat content of water vapour that is generated during quenching of continuous casting of steel?

A huge amount of water is evaporated to cool down and solidify the liquid metal strands coming out of bottom of CCM mould. The steam contains significant latent and sensible heat energy, besides...

26 January 2021 3,446 4 View

Does phenol red quench the light emitted by the scintillator in radio active assays?

I would really appreciate it if someone has experience with radioactive assays and could help me troubleshoot my experiment a bit. I could not find any literature evidence, but I am suspecting...

10 December 2020 4,810 3 View

Why I see no changes in hardness of AlCu alloy after 2 months natural aging?

08 December 2020 2,929 4 View

What is the effect of isothermal heat treatment on materials structure from room temperature?

Hi all I would like to study the microstructure evolution of semi-solid tin-lead alloy for an extruded sample during the isothermal heat-treatment process. Is there any difference if I heat up...

18 November 2020 9,087 7 View

Does Vectashield really quench Alexa Fluor 647 fluorescence?

If yes, when do you start to see the effect? Within hours of mounting or several days? Is it case specific? I have had nice stainings with several synaptic proteins/markers when using AF647 in...

13 September 2020 2,464 1 View

How can I properly quench POCl3?

Hey! I was wondering if there is a procedure that details how to properly quench a POCl3 solution. If you have any advice on how you efficiently conducted this process, please feel free to...

13 September 2020 3,605 4 View

What is the suitable method to find out the DC conductivity of glass and hence activation energy for the conduction, experimentally?

I am preparing oxide glasses (Silicon-phosphate) by melting and quenching method. I want to measure DC conductivity of the glass obtained after annealing. I am trying with Van der Pauw Four probe...

27 August 2020 922 3 View

How can I break biotin-streptavidin bond and separate them?

I am working with a florescent compound that is biotinylated. When strepdavidin is present in the system, the binding of the protein with the compound quenches the florescence. I need to perform...

16 August 2020 6,937 8 View