Where can I find a database with information on the ACT standardized test from current and past years?

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Why are reaction forces so high when I add vibration to cutting model?

Hi I am trying to model a cutting problem with a blade and comparing the results with and without ultrasonic vibration. From experimental results in our group, the use of ultrasound can...

13 June 2024 7,461 4 View

Best Tools for Wrist PPG Signal Analysis: Your Recommendations?

I'm conducting research on photoplethysmography (PPG) signals obtained from smartwatches worn on the wrist. The main goal is to analyze the PPG waveform and extract key fiducial points and...

13 June 2024 3,286 0 View

Why diagonal terms in Abaqus stiffness matrix are infinite?

I am running some simulations in Abaqus to extract the stiffness matrix of a FE model with geometric nonlinearity. I want to provide to Abaqus a set of nodal displacements (all the dofs in the...

28 May 2024 4,797 2 View

Is it possible to combine a time-series of tree-ring widths and and a time-series of diameter at breast height measurements into one TS?

Hello together! I have some time-series for tree-rings from dating from 1850-2016 and diameter at breast height (DBH) from 1996-2022 for the same plot, however the sampled trees for tree-rings...

16 May 2024 5,295 2 View

Is priori knowledge only instincts? Why?

I think so because The Random Slate Theorem

03 May 2024 3,082 7 View

How to fix driver conflicts of an ancient Skyscan 1072 micro CT with DT3157 video grabber ?

I am currently trying to get a Skyscan 1072 micro CT to work again. After the mainboard on the original PC died, we tried to set the machine up on a new computer. We managed to control the source,...

28 April 2024 380 0 View

Statistics: Is it worth using a t-test on pre and post survey data with 12 or less responses?

Is it worth using a paired t-test on pre and post survey data with 12 or less responses? Or should one rely more on the mean and standard deviation of the two data sets to evaluate the survey...

27 April 2024 8,702 8 View

What about religion, God, multi verse, etc.?

1)Religion(or at least spirituality) calms my mind, particularly, the built in belief of only one reality. God created the only reality. The afterlife is another dimension. We have free will but,...

25 April 2024 10,054 0 View

Handling BrainVision matlab files with ECG data in EEGLAB?

I have 217 preprocessed BrainVision matlab files (.mat) with ECG data in them. I've been having trouble creating a study for these. I know BioSig works for ECG data, but it doesn't seem to work...

21 April 2024 1,028 2 View

EEGLAB - how to import multiple .mat files from different folders all at once?

I have 25 folders for 25 participants, all with .mat files inside that are preprocessed. Most of them have the same amount of .mat files - a couple participants didn't finish the study, so they...

17 April 2024 1,895 3 View

What is the prepared reference material that can be used in inductively coupled plasma optical emission spectrometry (ICP-OES) to measure REE and U ?

What is the prepared reference material that can be used in the ICPE-9820 Shimadzu Japan instrument, which employs inductively coupled plasma optical emission spectrometry (ICP-OES) to measure...

06 August 2024 1,896 1 View

How can I better show my data?

I am validating the expression of several genes by qPCR to confirm transcriptome analysis. After many inconclusive runs, I realised my housekeeping gene (GAPDH) was downregulated in my...

27 June 2024 7,317 3 View

How to produce homogeneous reference gene bands in Western Blot?

Hello, I have been performing Western Blots to study the protein levels of a rodent skin and muscle sample. However, I have not been able to produce homogenous reference bands. I suspect that...

26 June 2024 5,912 3 View

Cancer biology reference book?

Anyone can suggest me a good reference book on cancer biology that covers drug delivery and discovery as well as basic concenpts of cancer biology?

25 June 2024 9,245 1 View

Is it advisable to run reference genes separately from target genes in a comparative Ct analysis on ABI StepOnePlus due to logistical constraints?

Hi Everyone, I'm reaching out for some guidance regarding conducting a comparative Ct analysis with the ABI StepOnePlus system, and I hope you can help shed some light on my dilemma. Here's the...

11 June 2024 4,044 3 View

Why am I having huge shifts in reference genes Cq's?

I was recently performing a great deal of qPCRs on adipose tissue derived RNA. I had experimental samples from sick, and control samples from healthy individuals. I used the same chemistry for all...

04 June 2024 6,923 0 View

"How can federated learning and edge computing architectures be designed to ensure compliance with GDPR and HIPAA regulations ?

Designing Federated Learning and Edge Computing Architectures for GDPR and HIPAA Compliance in Healthcare Applications.

28 May 2024 6,525 1 View

Could someone help a right procedure for TGA analysis of cement?

I analyzed cement samples exposed and unexposed to moisture over various periods. The TGA results of these samples showed variation with each repetition. However, I consistently used calcium...

22 May 2024 1,337 3 View

What to do with primer efficiencies ?

Hello - planning a SYBR Green qPCR study. I have primer efficiencies, including for reference genes, from 90-105% I am planning to use efficiency correction in my calculations - do I correct for...

15 May 2024 3,370 0 View

Need help for cq values in Rt-qpcr?

cq values for my reference coming like 22 and cq value of my target gene coming as 23 and 24 around? can i considered this value for future calculation? or what else i can do to get better cq...

14 May 2024 6,081 6 View