What is the effect of the c/a ratio of the Mo2C carbide on the properties of secondary hardening steels?

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Is this 6GHz wifi antenna create complexity at the time of febrication?

I have design a 6GHz antenna for wifi.The feed line width is 2mm and there are 2 parasitic elements beside this feed line with 1 mm gap.Is there any problem at the time of febrication?

04 February 2021 9,241 3 View

How can you make a PEDOT:PSS film using the doctor blade technique?

I have been trying to make an even PEDOT: PSS (PH1000) film with the doctor blade technique (tape casting) with varying results. I have been using a silicon substrate that's treated with piranha...

01 February 2021 8,506 5 View

How robust are open source soil moisture sensors connected to an arduino board for field monitoring?

Seeking recent experiences in the development and deployment of low-cost soil moisture sensors (ideally under $50/sensor) connected to arduino-based dataloggers. What is the longetivity of the...

19 January 2021 6,256 2 View

How to separate a mixture of organic acids by GC?

I would like to develop a method for analysis of many organic acids in the same time. how to separate the chromatographic peaks of each one?

20 December 2020 8,399 3 View

Should I keep the missing values > 50%?

I have a data set of 771 sample size. But some of the variables (laboratory findings like ALT, AST, creatinie level) have more than 50% missing values. Should I drop those? But I think those...

13 December 2020 4,847 3 View

How to Strip off HSQ( Fox 16) after etching?

We are finding a hard time to strip of residual HSQ ( Fox 16) after using it as a mask in etching? We are coating 600 nm thick HSQ and writing with 3000 microC/cm^2 dose at 1 nA current. We are...

08 December 2020 5,452 2 View

Why the oral cancer cell line from metastatic tongue origin is showing less aggressive property?

I am working with oral cancer cell line SCC090 (ATCC). As per ATCC data sheet it is originated from metastatic tongue. It's primary site is not mentioned. Due to the origination from metastatic...

08 December 2020 5,674 3 View

In case of larger sample size (more than 700 sample) can I do t-test though the data is not normally distributed?

My sample size is more than 750 but sk test is showing non-normal distribution. The variables have several outliers but I shouldn't remove those. In that case what should I do? t-test or other...

06 December 2020 1,285 19 View

Why the western blot of HIF1alpha of the whole cell lysate shows intense band under normoxia without any induction of hypoxia?

I am working with oral cancer cell lines and trying to find the expressional changes of HIF1alpha under different experimental treatment. I am getting intense band of HIF1alpha in the western blot...

29 November 2020 5,707 3 View

Can I use both NVIVO and Paper together for maximum understanding of my own data?

Dear geniuses in qualitative research, I am currently on coding and categorising phase of my data. I feel like I should use both NVIVO and paper for the same. I started with 3 big chart papers...

28 October 2020 6,706 3 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

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

Which is the most efficient etching solution for nickel based alloys?

Which solution reveals the microstructure and features of nickel-based alloys?

02 March 2021 2,221 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Is there a way to tell based on appearance which protein crystal should diffract the best?

I have had unheard of success with protein crystallography lately from a super successful protein expression and purification batch. I have attained a lately reproducible vast amount of crystals...

09 February 2021 5,155 5 View

How can we quantify martensite in Ferrous and Titanium alloys?

How can we quantify metastable phases like martensite in Ferrous and Titanium alloys, in relation to their stable counterpart For example in EBSD, XRD, Optical? Eg, Martensite and Ferrite maps.

09 February 2021 7,572 3 View

Electron density difference maps(Fo-Fc): what is the meaning of negative densities (red blobs)?

Dear community, As far as I understand, negative density features point at stuff that is in the model, but not supported by experimental data. However, in many cases (e.g. attached image), when...

06 February 2021 2,847 2 View

Why E1g mode (Molybdenum disulfide) is undetectable in Raman spectroscopy?

I synthesized 1T/2H hybrid phase MoS2 on a graphite foil surface by hydrothermal method, and then analyzed it by Raman spectroscopy. As a result, three new peaks correspond to the 1T phase were...

04 February 2021 6,580 2 View

Should the Ice 1h crystalline structure be lost during equilibration process in LAMMPS?

I have created an Ice 1h structure and am equilibrating it 100K in NVT ensemble in LAMMPS for a timestep of 0.25fs in 3000 steps. The potential used is TIP4P/Ice. Although the simulation runs fine...

26 January 2021 9,603 11 View