How to determine the size of an obstacle using ultrasound sensors?

Dear colleagues! Share information on possible algorithms for processing signals from ultrasonic sensors, allowing you to assess the range and size of obstacles (in horizontal and vertical...

09 March 2020 1,554 3 View

Did anyone used Lipogro or Fetalgro for cell culture?

I wonder if anybody used Lipogro or Fetalgro for cell culture? Does either match or outperform FBS for cell lines?

09 February 2017 934 1 View

Where can I find bankruptcy statistics?

I am intending to predict default probabilities by using logit regression on financial ratios of several companies from the same sector. Any idea where could I find a data set of companies from...

12 February 2015 2,206 3 View

What methods are known to introduce and evenly distribute an additive in micro amounts (say, 0.01%) in viscous fluid?

The problem is real, for example, in polymer industry. Micro and nano sized additives tend to aggregate. Their even distribution is always a challenge, especially in a viscous fluid. Which...

24 November 2014 9,908 6 View

Can anyone help me to find a value of the YFeO3 surface energy or to give advice how can I calculate it from another data?

Surface energy of YFeO3 (yttrium orthoferrite).

02 September 2014 9,377 3 View

How can I separate endothermic and exothermic peaks on DSC-curves if I have no idea about occurring processes?

I investigate chemical and phase transformation, occurring under thermal treatment of the glycine-nitrate combustion products. I know that my curves is superposition of the endothermic process...

23 April 2014 6,533 20 View

Very old typewriter

I found recently an old, but quite functional mechanical typewriter. This is "Continental", made in Chemnitz, Saxony, in 1943, shortly before the bombing of the city by Anglo-American aircraft,...

01 January 1970 5,054 7 View

Publicly available single-cell & T-cell/antibody immune repertoire COVID-19 datasets

To accelerate the COVID-19 research and vaccine development we collected a list of publicly available datasets with single-cell (scRNAseq) and T-cell/antibody immune repertoire (AIRR / RepSeq /...

01 January 1970 3,670 4 View

Can you recommend an efficient phosphor excitable at 450 nm, emitting in VIS having 5 ms to 50 ms afterglow decay time and small particles < 5 um ?

I am looking for a high efficiency phosphor powder for making printable ink. The required excitation is about 450 nm, emission small be visible. The particle size needs to be small enough for...

01 January 1970 5,712 3 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

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

Please, How can I plot a channel capacity of MIMO and SISO in matlab?

CSISO= f(frequency) : plot(f, CSISO) ? CMIMO= f(frequency) : plot (f, CMIMO) ?

13 February 2021 5,225 4 View

How to perform analysis on Chandrayaan-2 DFSAR data using MATLAB or other languages like python?

Kindly suggest any libraries/Books/platforms/tutorials for the same.

04 February 2021 1,708 2 View

SAR X-Band constellation from Capella Space?

Dear all, I'd like to open here a sort of forum for understanding how the geodesists community is moving in view of the X-band SAR satellite constellation. The new constellation will offer new...

24 January 2021 6,248 0 View

How is the power spectrum of the backscattering produced by the atmosphere on radar transmission?

If a radar send an electromagnetic wave to track some object I would expect that the returned wave (from the object) is accompanied by backscattering from atmosphere molecules. My question is, how...

17 January 2021 1,208 2 View

How can I write MATLAB simulation codes to define a distributed MIMO system?

Hi Good time How can I write MATLAB simulation code to define a distributed MIMO system? I have two base stations and one user and I have trouble determining the size of H = [H1(d1); ... ;Hl(dl);...

08 January 2021 9,560 3 View

How to compute the refraction index for a 79.5GHz (3.8mm) FMCW Radar Instrument?

Dear everyone, I performed some experiements with a FMCW Radar Instrument emitting waves of 3.8mm. I can see some "movements" when I am looking on the relative displacements (+/- 0.15mm) over...

07 January 2021 2,073 6 View

Stable region for VL model?

29 December 2020 4,125 3 View

Orthogonal array response vectors in poor scattering mmwave MIMO system?

Can anybody help in understanding how in a MIMO system with large (ideally infinite) number of transmit/receive antennas and poor scattering (e.g at mmWave), the transmit/receive array response...

17 December 2020 6,903 4 View