How to deal with negative values of autoradiography scans when plotting a calibration plot?

I am quantifying spots on an autoradiography scan, so subtracting the background pixels to get the intensity values but when nothing binds, it's the same as the background and since that's an...

18 August 2020 3,265 4 View

How to find/predict transcription factors for a putative promoter of the gene of my interest?

Dear All, Based on ORCA conserved regions, CpG islands, and histone methylation, I predict a putative promotor for my gene of interest with one of my colleague's help. I need to find/predict...

21 February 2020 3,035 3 View

Can a 150KDa antibody pass through 100KDa filter at 15,000g for 1 hour?

Can a 150KDa antibody pass through 100KDa filter at 15,000g for 1 hour via centrifugation?

30 September 2019 9,592 3 View

Can you fill a shell volume with SPH in LS DYNA?

Hello All! I'm finding it hard to fill the attached keyword shell volume with SPH elements. Can anybody tell me why? Is it because of the complex geometry? Thanks in advance

25 September 2019 6,886 1 View

Strain Rate in LS DYNA user defined materials?

Hello All! Anybody knows a better way than eps(i) / dt1 to calculate strain rates in a UMAT? I'm trying with eps / dt1 but apparently it is not giving me a proper rate-dependent result. Thanks..

16 July 2019 3,700 7 View

Software other than ANSYS and MCalibration to get Mooney Rivlin Constants?

Hello All! I am using both ANSYS and MCalibration to get model constants for a 9 parameter Mooney Rivlin model using my uni-axial tension test data. These two software give me extremely different...

14 May 2019 352 6 View

Good protocol for Mouse ESC electroporation?

Dear all, Would you kindly share with me a good protocol for mouse embryonic stem cells electroporation using Neon Transfection System? What parameters and plasmid concentrations that I should...

20 January 2019 9,045 9 View

I need a clarification regarding reverse coding of negatively-keyed items in a likert scale?

If a questionnaire includes positively and negatively-keyed items, 1)should all the negatively keyed items be reverse coded? for example, if there are two items, 1. I like the game 2. The game is...

13 September 2017 4,955 10 View

How to analyze MCQs and open-ended questions using SPSS?

30 July 2016 6,920 9 View

How is the galvanstatic polymerization of EDOT is done?

22 April 2016 2,222 1 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

How can the use of Jolly Phonics improves the quality of reading, speaking and writing in rural disadvantaged communities in Papua New Guinea?

Jolly Phonics reading program is an effective way to teach early reading to young learners. How can lectures at the university prepare early childhood student teachers to teach Jolly Phonics to...

03 March 2021 3,731 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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

How can I represent SDS-PAGE results for machine learning analysis?

I am trying to classify and analyze the results of an SDS-PAGE based array for bacterial detection using machine learning, but I have trouble finding the best way to represent the results with...

27 February 2021 9,176 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View