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

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View