Interpretation of X-ray reflectivity spectrum?

Dear community, I performed XRR measurements on thin film AuAgSi alloys deposited on Si substrate, please see attached image. For simulation i included 2 nm of SiO2 on top of the substrate and i...

03 February 2021 5,325 2 View

What is the best GIS tool to calculate connectivity score for a point along aquatic network?

Hello, I am looking for a GIS tool (ArcGIS, QGIS, R, etc.) that will calculate a measure of habitat connectivity for nodes along an aquatic (estuarine) network? My dataset is comprised of a...

12 January 2021 6,107 2 View

Can I sequence PCR products from green masterm mix without purification?

I wonder if anybody has an experience of sequencing PCR products where master mix contains green dye for gel loading. What if I will purify them with enzymes instead of gel extraction or...

18 May 2020 5,831 5 View

How to calculate circular dichroism in VASP?

Is there an option to calculate circular dichroism in VASP. If not in VASP then is some free open source software. I need to calculate the spectra for small inorganic nanoclusters (100-200 atoms)

07 May 2019 9,377 3 View

Does anyone detect the 'salt effect' when determining ammona in seawater, highly saline water or brine?

Does anyone detect the 'salt effect' when determining ammona in seawater, highly saline water or brine? How does the time of colouration change when using the indophenol blue reaction in salt...

09 January 2019 1,932 5 View

What types of mouse BM cells can adhere?

07 July 2016 9,616 3 View

Why ROC Curves developed by MATLAB tools are not completely consistent with ROC curves plot from "Principles of underwater sound" (Urick, 1983)?

07 July 2016 474 2 View

Can the antibody alone trigger the FcR-mediated effects in macrophages?

In some models of macrophage activation it can be triggered by the binding of immune complexes to Fc receptors. But in reality free antibodies can also bind FcRs (that's why we use the Fc block in...

18 April 2016 5,292 2 View

I'm involved in CVD graphene preparation and I need a gas diagram (Ar, H2 and CH4) for a CVD equipment. Can anyone help me, please?

Actually I have almost everything for the experiment - chemicals, foil, CVD equipment and so on. And here is the thing - how to adjust the flow of gases?Here you can see a part of a receipt from...

16 March 2016 7,373 3 View

Why are my macrophages positive for both CCR7 and CD206?

I have stained mouse BM with F4/80, CD11b, MHCII, CD206 and CCR7. Cells were Fc-blocked. When gated on F4/80_hi/CD11b_med-hi, I see a population that is CCR7+/CD206+ double positive (see...

31 January 2016 1,192 5 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View