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Solar panel to battery, dc to dc converter question

I need to design an MPPT and the converter that uses it. the thing is: the Solar panel has a max voltage of 40V and the battery that is going to be charged is around 100V, the most easy thing would be to use a Boost converter, but from what i understand, an MPPT changes […]

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Mastering Development

Can you say which is better, DialogFragment or AlertDialog?

I know that both AlertDialog and DialogFragment are customizable. Which of the two is better? If you can say which is better, why?

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Ask Engineering

Solar panel to battery, dc to dc converter question

I need to design an MPPT and the converter that uses it. the thing is: the Solar panel has a max voltage of 40V and the battery that is going to be charged is around 100V, the most easy thing would be to use a Boost converter, but from what i understand, an MPPT changes […]

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Mastering Development Software

Do other languages have variables shared between threads?

I guess it would be too complex for Node.js / JavaScript to leverage, but I’ve been working with clusters in node to break big tasks down so all cores can work at once but the inter-process messaging provided by Node seems to stringify the data to JSON and re-parse, causing a high overhead on sharing […]

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Database Development

Can we prevent table from update directly but allow update using trigger from another table?

So, let’s say I have 3 tables: stocks table, it have columns: id, product_id, stock sell table, it have columns: id, product_id, qty buy table, it have columns: id, product_id, qty What I want to do: Prevent update stocks.stock value directly. But allow update stocks.stock value by trigger from buy or sell table. Is this […]

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Disadvantages of SIM vs TIC in GC-MS

In GC-MS what are the relative advantages/disadvantages of using Selected-Ion Monitoring (SIM) vs using Total Ion Chromatograms (TIC)? I know that SIM offers a better S/N ratio, however if the S/N is acceptable using TIC, is it better to use TIC and if so, why?

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User Help

ffmpeg: media converted with only one audio channel

I would convert a media file with this command ffmpeg -i File1.avi -c:v h264 -c:a aac File1.mp4 But it convert only one channel audio of two, why?

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Mastering Development

Use external terminal window instead of the integrated one [closed]

I don’t want my input/output to appear in the integrated Terminal, I want IntelliJ to open and use a new cmd.exe window each time I execute the program. Is that possible? Edit: For clarification, since apparently I was using wrong terminology (sorry about that): By ‘integrated terminal’ I meant the ‘Run’ window (where all the […]

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Mastering Development Software

Cons of Exceptions & Return Codes in C/C++

Talking about defensive programming, are there any disadvantages of using exceptions or return codes? In other words, should we avoid them? If so, why?

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How does electrophoresis function as a separation method for example amino acids or enzymes?

a. How does electrophoresis function as a separation method for example amino acids or enzymes? b. In the following picture, different variants of enzymes have been separated from a fish, Indian salmon. In the picture there are black bands. If you have the same band, you have the same gene, you have different bands you […]