How to make an apparatus for testing membrane permeability and selectivity?

Good afternoon everyone! I just can't find drawings or a description of the creation of an apparatus for determining the permeability and selectivity of membranes in relation to gases and gas...

14 January 2021 9,205 4 View

Fixation of whole rats organs in buffered formalin?

Dear colleagues, I would like to ask you if anyone has experience with the fixation of whole rat organs (heart, lungs, liver, kidneys, brain, testes) in 10% buffered formalin. Thank you, Roman

28 October 2020 3,175 3 View

How can you do biotynilation of antibodies in presence of gentamicin?

For some time we have used biotinylated antibodies for ELISA. Usually I use biotin N-hydroxysuccinimide ester to link biotin to antibodies (and I have used different carbodiimides for other...

28 July 2020 8,806 3 View

If you had to reference a publication which proves or at least rigorously argues that AI control problem is (un)solvable, what would you cite?

Links to such articles with some explanations would be great!

27 July 2020 7,035 6 View

What is the estimated projected price of electricity (or hydrogen) for bio-solar cells?

Hello, everyone! There are many reports about bio-based solar cells and their prospects in the scientific literature. All authors write that these devices will be low-cost. Does anyone know any...

13 July 2020 655 3 View

Can you help me?

I am looking for information as to whether some insects (or spiders?) similar in pattern of colouration (red anteriorly, blackish posteriorly, white transverse bands) to some Cleridae (Clerus,...

09 February 2020 4,416 3 View

Does somebody know about protocol of retroviruses and adeno-assosiated viruses?

Hello! I have a lot of practice with lentiviruses (shRNA, knock-in, CRISPR, etc.). And now I need to transduce human and mouse cells by retroviruses (knock-in). I recieved plasmid pQCXIP and in...

11 January 2020 1,245 3 View

Variation partitioning - Is there a all -encompassing function/package in R?

I am a bit frustrated looking for a competent function doing variation partitioning (e.g. on linear model output) it should be able to tick the following boxes A) calculate all overlaps and "pure"...

04 December 2019 9,273 3 View

Is there any problem with magnetite nanoparticles to be observed in a FESEM system?

I ask this because I had a problem with a FESEM FEI SCIOS system. According to the technician he made observations of my sample TiO2/MAGNETITE. After many observations and session of my samples...

25 November 2019 3,024 4 View

Has anyone had problems quantifying DNA using Qubit?

I use Qubit to quantify my DNA material, and I have never had quantification problems. However a few weeks ago my lab bought a new Qubit reactive which has a different color (slightly pink) in...

23 September 2019 3,943 1 View

Which software to use to statistically analyze Telomere Length_TRF_Southern Blot?

I am trying to measure telomere length in an ant species using the TRF method, which is a Southern blot technique. Currently, I am struggling with analyzing the images and would appreciate any...

29 January 2021 604 3 View

Can you suggest a sub-problem and possible objectives regarding to this thesis/research study?

03 November 2020 8,155 3 View

Why do I receive the sae mesage several times?

26 October 2020 409 1 View

Image database of vegetation quadrats?

I am trying to develop a web teaching module (thanks to COVID) on plant community ecology. I am searching some database of photographs from plant quadrats to let students experience the whole...

14 October 2020 8,156 1 View

Is there a good way to do insect bioinventories without capturing and killing insects?

Dear entomologist colleagues, just wanted to find out if any of you have ever conducted and published on insect bioinventories without collecting insects? Is it defensible to do catch, ID and...

29 September 2020 7,660 16 View

Do oyu want to publish an articles in Poland?

Dear Scientists I would like to invite you to publish scientific articles on economics (free of charge) in Poland in the journal ASEJ. We are indexing in RG, Urlich's Ebsco, ERIH+. asej.eu All...

24 September 2020 8,901 4 View

No title

05 August 2020 8,976 1 View

Is anyone interested to join me to the Erasmus project?

I'm Erasmus coordinator from Poland. I'm open to cooperate with another coordinator within Erasmus project. If you are looking for the team, please write to me. Joanna

18 July 2020 7,910 2 View

Can someone let me have references with description of this aboriginal cross carved in rock?

I saw this cross in an NGS video and photographed the screen, but I did not learn where this cross was found. Seems to me that it was found in some island. In Cuba there is one very much similar...

25 March 2020 2,296 2 View

Macrofauna-Can you tell me what species this is?

Can anyone identify this species? It's from a temperate lagoon located in the southern part of the Po River delta (Italy). Many thanks, Monia

03 March 2020 9,999 5 View