Can an airplane stay up in the the air without moving forward just like helicopter ?

How the lift and weight cancel each other perfectly for a helicopter to stay it motionless? Because its propeller do generate huge amount of lift due to air pressure plus a blend of air stream...

09 February 2021 3,990 14 View

What is the formula used for the calculation of L10?

Is there any formula, which can be used for the calculation of L10 i.e, peak noise level? Please give your opinion?

14 January 2021 8,408 3 View

How to deal with missing X,Y,Z co-ordinates of particular atom in ligand .cif file ?

I am trying to prepare parameter files for G7M modified residue for MD simulation using Amber. I got G7M.cif from RCSB PDB but in that file co-ordinates for H0P3 are missing which is causing an...

07 October 2019 7,801 2 View

NF Kb estimation: any available biomolecule in serum which can estimate the expression of NF-KB?

nuclear factor kappa light chain enhancer of activated B cells which gives estimate of cytokine release, ultimately inflammation . Is there any diagnostic kit is available which can estimate its...

28 July 2019 1,864 5 View

How to confirm the RNA sequence for any mutation after in vitro transcription?

I have to do in vitro transcription of ssDNA then PCR and using PCR product for transcription by T7 polymerase of repeat containing RNA.So after purification and denaturing gel electrophoresis ,...

31 May 2019 3,161 2 View

What is the relation between lattice parameters and particle size in manganites??

The change in particle size is resulting in change in unit cell lattice paramaters in manganites. Please explain it in terms of crystallography and why is it so.

28 February 2018 1,590 3 View

How can i dissolve Sodium Nitrate in organic solvents??

I am to make a solution of Sodium Nitrate and a polymer which is hydrophobic. I have been trying with ethanol, but in vain. Please suggest me a procedure to make a solution of sodium nitrate.

07 November 2017 4,018 5 View

PH of 0.01N HCl ? any reference for this.

It was required for buffer preparation.

27 June 2017 3,684 3 View

Which is the best solvent system for flavonoid isolation in TLC method ?

14 May 2017 3,450 4 View

1000g vcf file mapping against bed file?

Hi all, basically this is a bioinformatics query, I have a 1000genome phase3 vcf file and a clinical bed file, i need to map the bed file against my vcf file to find only CNVs, but not indels, for...

13 October 2016 7,924 2 View

What condition required for coating of Fe3O4@SiO2 by using APTES?

I tried coating Fe3O4@ SiO2 by using APTES in 5% water-ethanol but it is not coated. Kindly suggest a solution for it. Thanks

24 February 2021 5,992 4 View

What is the best substrate for exfoliating few layers of hexagonal boron nitride (hBN) using traditional scotch tape method?

Unlike graphene, it is usually very difficult to exfoliate few layers (~10 nm thick) of hBN on SiO2 substrate due to lip-lip interaction at the edges. Au substrates have been proven very useful...

16 February 2021 2,635 2 View

I want to remove TiO2 and SiO2 coating from surface. any one can help me?

I want to remove TiO2 and SiO2 coating from surface. I think that i should use HCl and MgCl2 and an oxidation agent such as potassium nitrate, but i dont know in which propertion should these...

14 February 2021 300 3 View

How to prepare OH- terminated Si Wafer?

Hi, Folks. I am working on the ALD project to deposit Al2O3 on the Si wafer from TMA and Water. I have struggled with the preparation of OH- terminated Si wafer. I have both Si(1 0 0) and...

08 February 2021 8,792 2 View

The reason of PMMA channels cracking?

07 February 2021 3,663 2 View

Separation of CaO from Al2O3 and SiO2 in a solid waste, does HCl work?

I have an alkaline solid waste which contains the following components: SiO2, Al2O3, and CaO according to the XRF analysis (as it gives the results as oxides). However, I know from the XRD that it...

28 January 2021 9,469 3 View

Lift off problem with Indium/Gold deposition?

Hi, I'm doing 5/40nm In/Au e-beam evaporation at rates 0.2A/s(for In),1A/s(Au) on lithographically(doubly coated 495k,950k PMMA e-beam resist) done Si substrate at base pressure 2e-6torr. I'm...

18 January 2021 7,550 4 View

How to choose a PMMA with the correct thickness IN E BEAM LITHO?

I try to pattern the gold layer around 2 nm-20nm on silicon, I used around 2000nm thickness (PMMA 950K A13), I tried to pattern five samples in total, but only one showed the pattern I wanted. I...

13 January 2021 7,710 1 View

What is the best lubricant and dispersant for SiC abrasive particles ?

I am examining laboratory cases about ZnO Based ceramic Lapping with SiC,Al2O3,CeO2 and SiO2 abrasive particles. but i have no experience about modifying SiC slurry lapping. Also,i use of double...

13 December 2020 4,327 4 View

Is surface embrittlement unavoidable after spray coating with brittle powder ?

I am not an expert at materials science. However, when I look at the literature, I read a process called cold spraying. This process is basically spraying a ductile powder (e.g. copper) onto a...

07 December 2020 5,378 2 View