Search found 81 matches
- Wed Mar 01, 2023 1:58 pm
- Forum: Resources (online, books etc.)
- Topic: Ranching moss piglets
- Replies: 10
- Views: 3817
Ranching moss piglets
I found this article while looking for something else. Turns out its rather easy to raise your own tardigrades (water bears, moss piglets, or whatever else you want to call them), needing nothing more than clean water and a source of algae. Looks like a fun project! https://www.tandfonline.com/doi/f...
- Thu Jan 26, 2023 4:54 pm
- Forum: Microscopes and optics
- Topic: What is this? Electronic microscope?
- Replies: 3
- Views: 1077
Re: What is this? Electronic microscope?
Looks like the control console for a 1970's era transmission electron microscope. The microscope part itself would be a (generally) cylindrical stainless steel column capable of holding a hard vacuum. Thanks, I thought it was something like that. It is unbelievable what one can find on the local cl...
- Thu Jan 26, 2023 12:59 pm
- Forum: Microscopes and optics
- Topic: What is this? Electronic microscope?
- Replies: 3
- Views: 1077
Re: What is this? Electronic microscope?
Looks like the control console for a 1970's era transmission electron microscope. The microscope part itself would be a (generally) cylindrical stainless steel column capable of holding a hard vacuum.
- Mon Jan 09, 2023 1:03 pm
- Forum: Beginner's corner
- Topic: Hemacytometer Cover Glass
- Replies: 19
- Views: 4113
Re: Hemacytometer Cover Glass
I'm with Tom Jones on this. The proper coverglass is more resilient to damage and is easier to handle and clean due to it's size, but I don't think a 0.17mm coverglass would introduce any significant error in volume. I might have a pipette small enough to measure such small volumes; surely someone ...
- Wed Jan 04, 2023 3:19 pm
- Forum: Illumination Techniques
- Topic: Narrow wavelength blue filter
- Replies: 3
- Views: 2030
Re: Narrow wavelength blue filter
He'll probably need to look into sputter-coated filters...which are not cheap. Chroma sells a broad range of these filters, but I'm not sure if they make them in a format compatible with your brothers setup: https://www.chroma.com/ (look under single bandpass filters) Edmund often has cheaper option...
- Fri Dec 16, 2022 1:33 pm
- Forum: Microscopes and optics
- Topic: Cover slip thickness
- Replies: 16
- Views: 3250
Re: Cover slip thickness
SRRF can be run with any camera capable of fast acquisitions. We use a 12-year old Photometrics Evolve 512 Delta with good results. Some of the high-QD CMOS's also work. Andors implementation is simply on the camera itself, whereas we do ours in post. Andor also didn't acquire the team - SRRF is dev...
- Thu Dec 15, 2022 1:39 pm
- Forum: Microscopes and optics
- Topic: Cover slip thickness
- Replies: 16
- Views: 3250
Re: Cover slip thickness
Very insightful post, thank you for sharing your expertise. Do you combine superresolution methods with deconvolution? I am interested in the optimum procedure to combine imaging with practical deconvolution, by utilising microspheres to obtain an experimental PSF. From what I have read, the optima...
- Tue Dec 13, 2022 2:44 pm
- Forum: Identification help
- Topic: Research?
- Replies: 9
- Views: 2828
Re: Research?
Some good (and free) ID ebooks: https://www.wfoissner.at/publications.htm
- Tue Dec 13, 2022 2:41 pm
- Forum: Microscopes and optics
- Topic: Cover slip thickness
- Replies: 16
- Views: 3250
Re: Cover slip thickness
The answer is "its complicated", as you've likely already realised from some of the above posts. Most microscope lenses intended to work with coverslips that are #1.5 in thickness. But this assumes that the sample is attached to the coverslip . If your sample is on the slide, or suspended in medium ...
- Mon Dec 12, 2022 12:59 pm
- Forum: Identification help
- Topic: help with posting videos
- Replies: 3
- Views: 1187
Re: help with posting videos
You need to upload it to a video hosting service first, youtube being a good and free choice (if you only want to share here, set your video to "unlisted" on youtube - that way only people you share the link with can access it). To add the video here, you can simply post the link, or you can do a fu...
- Wed Dec 07, 2022 12:46 pm
- Forum: Specimens, samples and slides
- Topic: Pond sample question
- Replies: 12
- Views: 5052
Re: Pond sample question
Werner Nachtigall in his book Exploring with the Microscope covers his use of micro-aquariums (page 117 in my copy). He uses very simple setups; small jars, no pumps nor filters. He keeps several of them. I went overboard and used about a gallon sized terrarium jar and lid. I put in some marbles, a...
- Mon Nov 28, 2022 3:46 pm
- Forum: Identification help
- Topic: chessboard-like microbe
- Replies: 9
- Views: 1920
Re: chessboard-like microbe
Thanks Dennis and WWWW...may need to look into a physical copy!
- Mon Nov 28, 2022 2:18 pm
- Forum: Identification help
- Topic: chessboard-like microbe
- Replies: 9
- Views: 1920
Re: chessboard-like microbe
https://onedrive.live.com/?authkey=%21ALuZq313PkW4xvM&cid=55153FC6AC252667&id=55153FC6AC252667%2110143&parId=55153FC6AC252667%219902&o=OneUp I saved this PDF off the web. It is a huge 800 plus MB file so takes like 4 minutes to load on my high speed internet. You can download it. If you want to vie...
- Mon Nov 28, 2022 1:58 pm
- Forum: About the website, the magazine and this forum
- Topic: Embedding Youtube videos
- Replies: 4
- Views: 3872
Re: Embedding Youtube videos
Step 1: On the "post" page click the "youtube" button. This will create text that says [youtube][/youtube] Step 2: Go to the youtube video you want to embed and look at its web address (URL). It'll look something like www.youtube.com/watch?v=<video ID>&<additional information> . For example: https:...
- Thu Nov 10, 2022 5:45 pm
- Forum: Specimens, samples and slides
- Topic: Embedding cheese for slicing
- Replies: 6
- Views: 2087
Re: Embedding cheese for slicing
Thanks for the ideas everyone. I've tried freezing the samples before, but still had issues with the section "shifting" in the microtome. Cheese becomes crumbly when frozen, so those shifts would cause large pieces to fall off. But I wonder if agar as an embedding medium (plus or minus freezing) may...
- Wed Nov 09, 2022 7:01 pm
- Forum: Specimens, samples and slides
- Topic: Embedding cheese for slicing
- Replies: 6
- Views: 2087
Embedding cheese for slicing
No, the title is not incorrect. Aside from amature microscopy, another one of my hobbies is home cheese making. I've been capturing micrographs of some of the organisms found in cheese with some luck, and have found a stain that can be used to give good colour to bacteria and fungi without staining ...
- Fri Oct 21, 2022 4:44 pm
- Forum: Pictures and Videos
- Topic: Flagellates living inside chili plant root cells
- Replies: 7
- Views: 1522
Re: Flagellates living inside chili plant root cells
I disagree with the above idea that these are flagellates that have become trapped in roots. There are a number of plant diseases which are caused by flagellated protozoans, and some of these are invasive (e.g. the protozoan enters and lives inside of the plant cells or within structures such as the...
- Mon Oct 17, 2022 2:25 pm
- Forum: Specimens, samples and slides
- Topic: Xanthum gum (or other thickeners)
- Replies: 3
- Views: 1246
Re: Xanthum gum (or other thickeners)
Not yet - I'm planning on using it to immobilize a yeast suspension, so that I can do a time-lapse of cell division without the cells floating away. I'd love to get one at 1,000x using phase-contrast!
- Wed Oct 12, 2022 5:08 pm
- Forum: Specimens, samples and slides
- Topic: Xanthum gum (or other thickeners)
- Replies: 3
- Views: 1246
Xanthum gum (or other thickeners)
I was wondering if anyone has experimented with "thickening" water-based samples with a thickener like xanthum gum (which doesn't require heating) to partially immobilize subjects? In the "professional" lab we use methylcellulose for this purpose, but at home I have quite a bit of xanthum gum (used ...
- Mon Oct 03, 2022 4:18 pm
- Forum: Specimens, samples and slides
- Topic: DIY prepared slides archive
- Replies: 4
- Views: 1862
Re: DIY prepared slides archive
Just to add to Bram's excellent answer, because different techniques are needed to make permanent mounts of different types of organisms, it is easiest to start by making permanent mounts of one kind of organism, and mastering that technique before moving onto another kind of organism. It is much ea...
- Fri Sep 30, 2022 12:47 pm
- Forum: Specimens, samples and slides
- Topic: Pond sample question
- Replies: 12
- Views: 5052
Re: Pond sample question
I have a bird bath in the back yard that supplies me with more organisms than you can shake a stick at. Turns out that birds use it to wash parasites off their bodies, poop in it, use it for mouthwash, you name it and a bird has done it in a bird bath. Add to that the sheer variety of birds, from h...
- Thu Sep 29, 2022 4:50 pm
- Forum: Specimens, samples and slides
- Topic: Pond sample question
- Replies: 12
- Views: 5052
Pond sample question
This is going to be a long-ish post, but the TLDR is I was hoping someone would have a good resource they'd be willing to share on how to maintain a small aquarium with a *diverse* range of freshwater algae and protists, or alternatively, if someone knows of a source where a similar "prepared" sampl...
- Thu Sep 29, 2022 12:20 pm
- Forum: Resources (online, books etc.)
- Topic: Scientific papers access
- Replies: 20
- Views: 6261
Re: Scientific papers access
I'm pretty sure that would be the same MD5. . Me too, but I was rather hoping it was not The Wikipedia page seems to say a lot of the things we don’t want to hear MichaelG. MD5, as a way to encrypt data, is crap. But it remains an excellent way to provide a hash that ensure a separate file has not ...
- Thu Sep 29, 2022 12:17 pm
- Forum: Resources (online, books etc.)
- Topic: Scientific papers access
- Replies: 20
- Views: 6261
Re: Scientific papers access
… but it appears that in most cases, sci-hub gains access via institutional (e.g. university) libraries where someone has donated to sci-hub access credentials. . Thus perhaps demonstrating that the donor is inherently untrustworthy ? … because they will, in so-doing, have breached the terms under ...
- Tue Sep 27, 2022 4:21 pm
- Forum: Resources (online, books etc.)
- Topic: Scientific papers access
- Replies: 20
- Views: 6261
Re: Scientific papers access
Given that the files are (largely) stored in a distributed manner, it would be pretty hard for someone to insert malicious code into the PDFs. Not impossible, but it would have to be done at the time scihub first accesses the PDF - once its sent to distributed storage, MD5 would prevent modification...
- Tue Sep 27, 2022 12:13 pm
- Forum: Resources (online, books etc.)
- Topic: Scientific papers access
- Replies: 20
- Views: 6261
Re: Scientific papers access
Is there a hacking concern with this? Not really; sci-hub self-catalogues the PDFs of scientific articles, so for most papers you're just accessing a PDF stored on a server and are not granting any sort of access (beyond a file download) to your computer. Some publishers have claimed that sci-hub g...
- Mon Sep 26, 2022 4:51 pm
- Forum: Resources (online, books etc.)
- Topic: Scientific papers access
- Replies: 20
- Views: 6261
Re: Scientific papers access
I say this as a biomedical researcher who frequently publishes and reads scientific papers.
Sci-hub is awesome. Use it.
EDIT: also, email authors for copies. More above-board than sci-hub, and if you get a scientist like me, they'll probably send you their entire back-catalogue of papers.
Sci-hub is awesome. Use it.
EDIT: also, email authors for copies. More above-board than sci-hub, and if you get a scientist like me, they'll probably send you their entire back-catalogue of papers.
- Fri Sep 16, 2022 11:43 am
- Forum: Beginner's corner
- Topic: Software question.
- Replies: 3
- Views: 1036
Re: Software question.
ImageJ is a free image processing software package that has this capability. You will need to know the pixels-per-micron scalining for your microscope, which can easily be determined using a micrometer. To add a scale bar: Load the image Under the "Analyze" menu select the "Set Scale...", then enter...
- Fri Sep 09, 2022 1:09 pm
- Forum: Camera systems and imaging
- Topic: BioVID 4K Linux driver
- Replies: 4
- Views: 1215
Re: BioVID 4K Linux driver
Go to: https://www.lwscientific.com/pages/camera-software Click the link for "BioVID 4K for PC - Version 4.11 (October 2021)". This will send you to dropbox where you can browse a zip file containing windows and linux drivers In the linux folder there are x64 and x86 drivers (you'll most likely nee...
- Thu Aug 18, 2022 11:43 am
- Forum: About the website, the magazine and this forum
- Topic: self-aligning-microscope-limits-super-resolution
- Replies: 2
- Views: 6574
Re: self-aligning-microscope-limits-super-resolution
It's a super cool invention, but still I'm not sure how exactly it self-aligns. Anyone cared to search for the paper? Now the limit of detection of single-molecule microscopes has been smashed again, and the details are published in the current issue of Science Advances. Its not really self-alignin...