July 27, 2021: some sound engineers visited to investigate how noisy the system is. we are able to identify the end of a magnet helium fill by looking at the pressure in the header - it increases when a magnet is full.the LN2 purifier should be filled about twice a week.the liquefier can manage up to 25 L / day if it has enough helium to liquefy!.the LN2 purifier can develop significant quantities of ice in a humid room - we use an extension to the outlet and keep a fan trained on the top to help.our liquefier is very sensitive to chilled water temperature and/or flow - more sensitive than the cryoprobe compressor on the same line.Since starting up again, we have been working on calibrating the production dewar gauge (we aren't convinced that it is linear) by carefully measuring the amount of helium going to the transfer dewar and to medium pressure storage during each transfer out.Īugust 13, 2021: We have been up for almost six months now! We have discovered that Then in late December, we realized (with the help of Quantum Technology!) that there was an ice blockage in the level gauge on the production dewar, so we spent the winter break warming it up - no liquefaction. In mid-December, we borrowed a helium sniffer from the John Smeros in the Department of Physics and identified some leaks around flow meters and other connections on our low-field instruments. March 7, 2022: We've had an eventful few months and we think that we are improving our recovery rates. He was impressed by Québec's lead in implementing a recovery system for an NMR lab that can be maintained in-house. It was exciting to talk about our cutting-edge system with someone who knows about advanced materials. March 8, 2022: We've had a visit from Sébastien Garbarino of Prima Québec today. When fully optimized, it should enable us to recovery 90% of the helium used by our seven traditional NMR magnets, one pumped NMR magnet, and EPR cryostat. For that reason, I suggest using the iPod to do this task, especially if you are going to be travelling, since there's no chance that the CD will rip properly on a plane.Since April, 2021, the McGill Magnetic Resonance Facilities has a helium recovery system capable of liquefying up to 20 L daily. Ripping a video or music CD or movie out of your iPhone using an iPhone is like putting together a CD inside a CD and putting it in your pocket. This is why the iPhone is considered to be better than the iPod when it comes to multimedia usage. Regardless of that, the iPhone can also rip videos and audio CDs, and has a better camera than the Macs even when it comes to pictures. Once that's complete, it will begin to rip the video on your Mac.Īs far as the differences between a Mac and iPhone are concerned, I guess that iPhone's lack of a DVD burner would make that particular task rather harder. RipIt automatically identifies the best video codec for your Mac (ffmpeg) and lets you know which one to use for the job. On installation, you are simply required to insert a blank DVD into your Mac, and then insert one of the blank DVDs that came with RipIt. Ripping a DVD with RipIt is essentially the same process as ripping a music CD or movie DVD - you just have to rip the video out of the original DVD. I will go through a short demo of how to rip a disc with RipIt below. There are a number of other advantages to doing this as well, such as making backups of your data or storing it indefinitely on external media. The basic concept is to rip the audio CDG files on your computer into a "raw" file, so that it can be burned onto a blank DVD. It has been designed for both Mac OS X Tiger and Leopard. RipIt is a great little Mac application which enables you to rip DVDs.
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