I am preparing a glass sample from a composition which is in a fine powder form,so, is there any condition for preheating process before melting the composition or in which situation preheating is desirable?
I would like to order JASCO V-770 UV-Vis-NIR spectrophotometer, my question is, can we use this instrument for studding absorption spectra or it has capability only for transmittance and...
05 June 2018 7,938 2 View
The reduction of Au+ particles to Au0 NPs can be discussed by the reduction potential (E0) of redox system elements. my question is, how will you calculate the reduction potential for Au+/Au0 and...
02 March 2018 785 0 View
Is there any relation between NPs size and energy band gap, I mean how the energy band gap vary with the nanoparticle size? please provide your answer with a mathematical relation if there is?
02 March 2018 4,271 26 View
in studying the interference of light through the Michelson interferometer the fringes pattern will appear in circular shape with the dark fringes from the center, my question is why the fringes...
02 March 2018 9,605 4 View
For most of the materials in order to conduct electricity, a material must have some charged particles that can move through the material when an external voltage is applied on it. so can glass...
02 March 2018 243 4 View
when you calculate transition probability, oscillation strength or any other parameter through Judd-Ofelt theory, what kind of physical unit will be used, for example Planck constant, electric...
01 January 1970 4,039 4 View
If you have a composition consists of 5 or more different material and different mole fraction ratio, depend of what rule you will choose a suitable melting temperature in order not to evaporate...
01 January 1970 4,068 2 View
effect of double bond on the flexibility of polymers
07 April 2021 0 0 View
I am writing to request some information for making polymer color flakes. I would appreciate the help.
17 March 2021 0 0 View
Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...
03 March 2021 5,978 5 View
Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...
03 March 2021 6,223 5 View
I looking for ferro calcium production process
03 March 2021 1,755 4 View
Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...
02 March 2021 4,119 3 View
Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...
01 March 2021 2,512 1 View
I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...
01 March 2021 395 3 View
Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...
01 March 2021 2,027 2 View
As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...
01 March 2021 8,840 1 View