Synthesis of black TiO2 powder by vacuum calcination?

I have synthesized TiO2 powder through sol gel method. I tried to do calcination of this white TiO2 powder under vacuum at 500 deg C. No change in colour was observed. Is this normal? because I...

20 August 2020 5,425 4 View

Can anyone help me with the simulation file of diode switched multilevel inverter ?

input is in the ratio of 1:2:3:7.i am attaching the circuit diagram of the inverter

24 September 2019 7,741 3 View

I am preparing black TiO2 by sol gel method. How to obtain very fine particles after calcination by sol gel method?

Hello everyone, I am actually carrying out my research in the synthesis of Black TiO2 by sol gel method. Took TTIP in Diethylene Glycol as precursor and later did hydrolysis leading to formation...

10 March 2019 1,559 4 View

Are the nanoparticles formed by sol gel method indeed in the nano size range?

I am trying to make black TiO2 by sol gel method. In this I am taking a titanium precursor (TTIP) solution in diethylene glycol followed by its hydrolysis and condensation to form a gel. Drying...

27 February 2019 6,172 5 View

Whether "lattice parameter" and "lattice constant" are refering to same constants like a,b,c in crystals?

In crystal structures, the lattice constants are defined as "a", "b" and "c". In few literature(s), the "lattice parameter" is used. Are they same?. Is there any difference?.

27 January 2019 7,088 4 View

What is the minimum cDNA template amount to use for BioTaq Polymerase reaction?

I am doing a PCR with BioTaq polymerase enzyme from Bioline. I am not seeing any positive bands on my gel. Does anyone know the minimum amount of template to use for this enzyme reaction?

15 October 2018 1,316 3 View

How useful is RIN value when you send out total RNA for miRNA sequencing?

I am extracting RNA from mouse tissue and would like to send the samples for sequencing, particularly looking for miRNAs in the samples. How useful and resourceful is the RIN value when the...

05 June 2018 3,300 3 View

Are there any specific microglial and astrocyte markers for primary cultures from postnatal mouse pups (P4-P7)?

Hi all. I am culturing primary astrocyte and microglia cells from postnatal mouse pups (P4-P7) and we are interested in looking at the gene expression specific for these cells types at this age....

06 March 2018 3,867 6 View

Can anyone share their experiences working with triple negative cell lines to screen for bioactivity?

Hi, I would like to hear suggestions about choosing cell lines for screening of small molecules. I understand that the common cell line used is MDAMB231. I also notice that use of MDAMB435 is...

09 February 2016 6,043 3 View

I am trying to run a flow cytometry experiment with MDAMB231 cells to do a cell cycle analysis. But why do I not see any cells when I run them?

06 August 2015 2,210 5 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

Do anyone here can help us in the field of molecular docking?

We have synthesized various metal complexes with different environment around the metals. Now to see the application of synthesized complexes we need this study also. we are also interested in...

01 March 2021 1,899 2 View

How to classify strictly upper triangular matrices by similarity?

Let F be a field. Consider U, the set of n times n strictly upper triangular matrices in F. For X, Y in U, we call them similar if there exists some S, which is non-degenerate and upper...

01 March 2021 2,957 8 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 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

How to find a correlation between coordinates in a curvilinear coordinate system?

Hello. I have a skewed elliptical coordinate system (I use alternative elliptical coordinates). And I need to determine connections between coordinates in order to fetch a covariance matrix of...

28 February 2021 364 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

Which transition metal salt precursor is best for doping? Why?

I would like to synthesize a transition metal doped TiO2 via solgel method. Hence, I would like to know which metal salt precursor to choose among Chloride, Nitrate, and Sulphate. A clear...

27 February 2021 4,285 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View