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Showing results for tags 'research'.
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Having a think.... I have fifty non-homogeonous biological samples I want to send to a NATA accredited lab for analysis. They contain volatiles, so heating the samples will drive off some of the compounds I want to check the levels off. Heating the samples is part of the standard process of digesting them so they can be analysed. Freeze drying is an option, but for that number of samples the prep would be expensive and out of my range The compounds I'm looking at are relatively stable at ambient temperatures, or at least any variations for the more volatile compounds which come off at above 60C aren't compounds of interest. I was thinking of grinding samples to dryness under liquid nitrogen in a not-fully-sealed stainless lab blender- because I have one here ( or should I seal it? ) but was told that as soon as the liquid nitrogen evaporates , water will rush in and the sample won't be dry any more. Is this true? How fast does the water rush back in if I quickly place the dried samples into a -20 freezer I've previously dried and ground biological samples under liquid nitrogen and found that most suitable, but that was for DNA analysis, not chem analysis. Next option is to grind and dry at 50C under air. Neither will give me consistent moisture levels for all samples, and it will prolly be up to the NATA lab to standardise these before analysis Does anyone reckon grinding under liquid nitrogen to be the superior method in this case? Ta for help, this place is fulla smarties :D
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Dear all, I am finishing honours soon (which is uni for those who are not sure what that means). After, I plan to do some part time work to fund my life...in my spare time I will be setting up a research facility to treasure and investigate the beauties of our lovely plant community at Gondwana rainforest (Gold Coast Hinterland). Specifically, this will be: 1) To collect and store species in a Springbrook nursery 2) Remove invasive species for the borderlands 3) Identify resources which the plant communities gift us with 4) Spread rainforest awareness and knowledge (conservation, bushfoods, plant medicines) via incorporation of WWOOFs (Willing Workers On Organic Farms) and backpackers I will be doing so with government funding and would like to chat with any interested peoples who have ideas to contribute. The project is in the ideas phase and so far, I can see no reason why it will not be successful. I am open to all comments. The pictures are of the area which is World Heritage Listed and some tree residents which are 3000 years old. I believe this area is akin to the Amazon Jungle. My view in relation to it's age. Gondwana Rainforest is a remnant from when the continents were joined, with Laurasia in the Northern Hemisphere and Gondwana in the Southern Hemisphere. It is the most extensive area of subtropical rainforest in the world and is estimated to be around 200 mya. All ideas, contributions and comments are welcome.
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Hi All, My partner is doing her honours project in Psych this year and urgently needs lots of people (at least 250) to complete her online survey. See official ethics committee sanctioned blub and the link to the survey below: Other participants are reporting that it does not take 40 min. Please help out if you can by taking the survey. Your participation would be greatly appreciated. If there is an issue with the link please let me know, but it should work as intended. Edit: Survey closed so I removed the link.
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Hi SA readers Have you ever grown cannabis? We are conducting a survey of cannabis growers as part of an international collaboration and we'd love it if you could spare 15 minutes of your time to complete our anonymous online survey. I want to thank the Oz Stoners moderating group for working with me to pilot the questionnaire. The survey is much improved thanks to the input of the moderating team. Survey link: http://ndri.curtin.e.../research/grow/ And here is the participant information: Discussion and feedback are welcome - I'd love to hear what you think of the project. Any feedback will help us to interpret the data and to design better questionnaires next time. And if you have any questions, please ask! Thanks
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