Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

In higher education, what is the best teaching method you prefer : collaborative learning, problem-based learning, individual learning, etc.? and why?

As a teacher, what is the best teaching method you prefer: Collaborative learning, problem-based learning, individual learning, video-based learning, games-based learning, etc. in the following...

13 July 2020 8,644 96 View

In your opinion, do educational games increase the isolation of students during COVID-19 crisis?

Educational games have been seen as effective tools for enhancing learners' learning (game-based learning platforms). However, in recent times, we have noticed some problems with the isolation of...

21 June 2020 5,112 27 View

In emergency situations such as COVID-19, how can distance education can help to communicate with the autistic students and integrate them?

The aim of this question is to know how the distance education can help to communicate with the autistic students and integrate them in emergency situations such as COVID-19. I think that this...

17 June 2020 249 8 View

After the Corona crisis, what are the questions most asked by students in the context of online counseling?

During this period of crisis (COVID-19), several students are very worrying on their educational background, their lives and their relationships with others. We want to take all these concerns...

07 June 2020 293 32 View

Sample-size calculation for Partial Proportional Odds (PPO) in ordinal regression models?

Hello, When analysing scores between 2 treatment groups, I am often confronted to violation of odds ratio proportionality assumption. One recommendation is the use of partial proportional odds...

08 February 2018 6,027 3 View

Does a list of distributions of biological variables exist ?

Hello, I am working on the assessment of normality / log-normality of variables. The problem is that, even with some samples, we can't be 100% sure of the mechanism behind a variable (additive...

14 February 2017 2,422 8 View

What is the effect of Calcium Carbonate on soil structure ?

Calcium carbonate is one of the cementing agent the participate in the binding of soil particles together through physico-chemical mechanisms and presumbly create a stable soil structure . i want...

01 December 2016 7,787 18 View

System with a zero dynamic?

hello, What do we mean by a system with a zero dynamic? and can you show to me this with an example? thank you.

02 July 2016 8,893 13 View

Non-uniform fuel-oxidizer using the partially Premixed combustion?

03 May 2016 2,884 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

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

Can bacterial suspension be pipetted directly onto petri dish and agar poured onto it?

Hi, recently I encountered a protocol for plating which was not the usual method I have been practicing (pour LB agar onto plate, allow it to solidify, pipette bacterial suspension onto plate,...

28 February 2021 7,292 3 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Difficulty in cloning of 1kb gene into vector?

I am facing difficulties in cloning a 1kb gene into a vector (pJIT163). I have my gene on interest (GOI) in pUC57 and want to clone in pJIT163 using SalI and BamHI restriction sites. I am getting...

25 February 2021 3,221 7 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

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22 February 2021 9,932 11 View

Can anyone help or comment on solubilising chlorobutanol in aqueous injections in minimum time possible?

Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...

21 February 2021 7,397 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View