How to simply increase the inert atmosphere pressure in tube furnace?

I have been setting up the tube furnace to work with inert atmosphere, i.e. H2 and N2 in order to anneal the iron-based metallic powders. The furnace is equipped with vacuum pump as well. The...

18 December 2020 4,006 2 View

How can I add any kind of noise to image for a given SNR?

Dears, what is the best way to add any kind of noise (not only Gaussian noise) to 2D signal (image) for a given SNR? Do you know a good code in Matlab?

30 September 2020 8,788 2 View

What type of noise in MRI image?

Dears, could you recommend the papers in which the types of noise in MRI images were analyzed?

05 September 2020 2,810 4 View

Is there any post-hoc easily applicable explainable AI tool for detections carried out by complex CNN-base architectures e.g. Mask R-CNN?

Hi, I'm aware of numerous Explainable AI (XAI) solutions for CNNs, however they ~all seem to be tailored for classification (or segmentation). I also see that for a small home-made model (lets...

31 March 2020 5,082 5 View

Coronavirus and politics: what does the epidemic tell us about democracy and other regimes?

Most of us experience far-reaching restrictions on private and public life, introduced by governments all over the world because of the coronavirus epidemic. Generally, these restrictions make a...

22 March 2020 6,992 95 View

Are manufacturers obliged to identify all possible food contact surfaces for Listeria monocytogenes or an indicator organism testing?

Hi, Under 9 CFR 430, establishments in Alternative 2b and 3 are required to sample food contact surfaces for Listeria monocytogenes or an indicator organism....

10 March 2020 6,762 4 View

Is it advisable to perform radiometric normalization on multi-temporal Sentinel-2 Level-2A images?

Should I perform such processing step before any analysis i.e. by using pseudo-invariant features (PIFs)?

30 January 2020 6,549 2 View

Consistent with the experimental value, the theoretically calculated proton radius from the theory that mass is of EM origin, what do you think?

Assuming that particle consists of a photon that moves circularly in the loop, creating standing wave obeying the rule that its closed path 2*Pi*R=n*Lambda (1) (resonator where resonator length...

15 October 2019 8,759 12 View

Can friendship be defined by any scientific criteria?

What criteria can be applied to define friendship? Is friendship an object of scholars'/philosophers' thinking? And what does it mean that someone is someone's friend? What are the qualities of...

02 August 2019 6,716 24 View

Can one believe in the existence of God without following any religion?

Is it necessary to accept the idea of God established by a given religion to believe in the existence of God? Does belief in the existence of God inevitably involve the adoption of an ethical...

31 July 2019 4,599 97 View

Interpretation of a fluorescence Emission spectrum ?

Hello, i work with a spectrometer which only render the fluorescence emission spectrum. Until now i just found how to interpret an exitation- and emission spectrum together to generate deeper...

20 February 2021 1,291 3 View

Why use both bead beating and enzymes (lysostaphin and lysozyme) for DNA extraction from sputum samples?

Hello, I have read in a few publications that to extract total DNA from sputum samples, both bead beating and enzymes are used to disrupt the cells. Bead beating is supposed to be efficient in...

18 February 2021 3,360 2 View

Handheld Portable Raman spectroscopy systems - recommendations and experience?

Hi all, I am looking for some general feedback and information from those that have experience using handheld/portable systems? I am looking at the prospects of using an off the shelf system from...

07 February 2021 9,691 3 View

What is the reference value of THD in BLDC MOTOR speed control ?

i used to control EHO+ANFIS to MRPID to Landsman converter for bldc drive i got 7% but some of them are telling IEEE standards are < 5% is it correct for Drives ?

07 February 2021 5,892 1 View

How to make a site-Selective Electroless Nickel Plating?

I would like to plating Ni/Au on the selected area. Can anyone give me a suggestion? It is a bit like to make golden finger on PCB board. Instead with the PCB board, I use polyimide as my...

28 January 2021 8,330 1 View

How to use PVQ Psychometric Tool?

Hello, I'm doing a research about if psychometric tools can be translated into video games. My main major is video games. So I'm an absolute newbie with psychometric tools. I have chosen PVQ tool...

22 January 2021 5,992 2 View

How to measure the hardness for PLA & PHAs polymers?

Hello, I am a bit confused on whether to follow ASTM D785 (Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials) or ASTM D2240 (Standard Test Method for...

21 January 2021 7,487 4 View

Will there be two research designs if using Mixed Methods?

I am having a hard time with my dissertation pre-proposal (super long story, but I have no help). If I use the Mixed Method, will my research design will be both phenomenological and descriptive...

07 January 2021 5,007 3 View

The hospitals reported rise in ICU admissions of young COVID patients - Is the new strain of COVID to be blamed?

05 January 2021 3,141 12 View

How to plot a hardness mapping reading using origin software?

Hi, I have a rectangular sample and a set of hardness distribution readings throughout the sample. Can anyone here help me, how to map it using Origin software? Thank you.

02 January 2021 4,079 3 View