Can i use DTT during a Zn affinity chromatography?

I need to purify His6 tag containing protein and im using a Histrap that is been charged with Zn2+. Can i add DTT to my lysis buffer or the column will not tolerate it when i insert the lysate to...

12 October 2020 5,910 4 View

How can I solve a checkpoint file problem in Gromacs 2018.4?

Hello everyone, I am running a simulation for 500 ns but after 200 ns I get the following error: The input requested 100000000 steps, however the checkpoint file has already reached step...

16 January 2020 454 7 View

How to model Constant-Current Constant-Voltage Charging of Lithium-Ion Battery in Comsol?

I am trying to implement a constant-current constant-voltage charging strategy using the COMSOL standard lithium-ion battery model that comes with the chemical engineering module. The idea is to...

02 December 2019 9,563 3 View

I am trying to figure out how quickly oxygen goes back into degassed E3 medium (essentially water with some salts)?

I am trying to figure out how quickly oxygen goes back into degassed E3 medium (essentially water with some salts). Degassing takes place with 5 cycles of 1 minute degassing in vacuum and 1 minute...

18 November 2019 5,423 2 View

SEB or SEE for Jurkat and primary human/mice CD4+ T cell activation?

25 July 2017 338 7 View

How to check the observability of a LPV system?

Consider the discrete system x' = A(t)x + B(t)u y = C(t)x' + D(t)u The matrices A, B, C, D contain time-varying parameters (calculated by a second model) which are given in the initial state, but...

19 May 2017 2,813 1 View

How to detect low amounts of mRNA by qPCR?

I want to detect early expression of IL2 by qRT-PCR. I was not successful using random hexameric primers at the RT step and SYBR for detection. what can I do to improve my sensitivity? What...

01 February 2017 7,322 4 View

How do I calculate sensitivity of android acccelerometers?

Hello, I would like to make a sensitivity experiment on android built-in accelerometers (tri-axonal) an make a statistical analysis (correlation etc) in Matlab. My questions are: 1..What would be...

08 November 2016 9,127 1 View

Any suggestions for efficient Raji cell transfection?

Hi everyone. Has anyone worked with Raji cell transfection? I recently used AMAXA technology to transfect Raji cells with a CRISPR construct that resulted in a very poor efficiency (~1%). When I...

17 May 2016 5,476 4 View

Could Raman spectroscopy reveal the presence of Pt and Ru nanoparticles dispersed on a carbon powder?

09 November 2015 8,352 5 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View