How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View

Statistical Test for Single Group over Multiple Conditions & Different Time Lengths?

I have a dataset with an unusual configuration and was hoping for guidance on choosing a method to test for changes in mean. For context, this is operational data tracking vehicle arrivals at 10...

20 January 2021 4,429 4 View

How long does MQAE solution last once prepared?

I am wanting to prepare a small quantity of MQAE solution. Once prepared, how soon should it be used? How fast will it degrade? Is there a way I can store a leftover amount for future use? Are...

20 December 2020 1,416 3 View

Why do many stock buffers ask you to adjust pH and then add more water?

Could someone please explain why many stock buffers ask you to adjust the solution's pH and subsequently increase the volume to a set amount? For example: Add 500g of powder X to 800mL of...

09 December 2020 1,882 3 View

How to estimate sample size when you think the effect size will be reduced (compared to previous studies)?

Hi, I am planning a follow-up experiment to a previous study and have a question about estimating sample size: For the sake of simplicity, the previous study showed that Condition 1 had more...

19 November 2020 7,948 6 View

What is angular velocity of projection of uniform circular motion?

12 November 2020 481 5 View

Peptide solubility in DMF (n,n-dimethylforamamide)?

I am looking to dissolve a suite of "acidic" peptides for, ultimately, a validated LCMS assay. Using DMF as an initial solvent (20% of final volume) but some peptides precipitate when aqueous is...

15 October 2020 9,171 1 View

How do crush foraminifera for d18O analysis?

I am looking to combine and crush 5 foraminifera to create a homogeneous carbonate powder that I will then be sending out for oxygen analysis. Does anyone have any good methods to make these...

14 October 2020 8,128 7 View

Troubleshooting co-IP from a small amount of brain tissue?

I am looking to perform a co-IP; however, I am using a very small amount of tissue to begin with from region specific microdissection in mice (2-3 300um sections per animal). I am concerned that...

07 October 2020 8,937 3 View

Can Stimulus Packages safeguard businesses during the Covid-19 Pandemic?

Research Proposals

02 October 2020 6,404 9 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

Protein-aptamer gel electrophoresis help, please??

Hi, I have problems with running gel electrophoresis. I have tried agarose gel electrophoresis and native PAGE. I have two proteins, which have molecular weights of ~30kDa and ~180kDa and two...

03 March 2021 4,275 4 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

Gel electrophoresis result for total RNA samples, 1.5 Agarose gel was used, How to improve the integrity of RNA?

Gel electrophoresis, RNA degradation, RNA extraction from fresh tissue

02 March 2021 5,433 5 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View