Is there a website specialized in online speech data collection?

Collecting acoustic data during the pandemic faced me with a challenge that I need to overcome. I have to upload some audio files and scripts, and the subjects are required to answer the questions...

22 September 2020 4,168 6 View

Hello, i want to ask why the yellow colour of essential oil turned into blue colour during hydrodistillation process?

it is because of oxidation or what?

25 February 2020 3,035 7 View

ACE Inhibition Assay?

1) I am curious on what solution should I used to dilute the ACE enzyme to respected concentration? is it the same regardless of what solution? or the activity will be differ accordingly to the...

24 February 2020 9,530 2 View

Thickness of oxide layer from the XPS ?

How do I calculate the thickness of oxide layer from the XPS depth profile? Is there any free tool that can help me know the thickness (oxide copper Cu2O) or could you attach a paper? Thanks

18 February 2020 2,723 4 View

Hi, can anyone clear up about the molarity concept?

I'm required to prepare 2mM of LiCl for my DNA extraction method, which I calculated to be 0.0212 g of LiCl in 250 ml of water. My supervisor told me to use any volume as long as it is 2 mM....

14 February 2020 9,808 3 View

Instruments for measurement and control system?

I am planning to develop a test rig to control the valve opening and closing. The input signal for the control system is SSI input from absolute encoder and voltage (up to 5V) from pressure sensor...

06 February 2020 4,911 3 View

DSPACE controller box (CLP1104) communication interface to laptop?

Hi everyone, may I know what is the suitable interfaces to connect dSPACE CLP1104 to the laptop. Can anyone suggest what model (compatible model and brand) of the interfaces and where can I get...

05 February 2020 6,405 1 View

Is it possible to measure the statistical significance between two sets of data represented in mean and SD?

I have two sets of data. Both of them are represented in mean and SD. I'd like to measure the statistical significance of difference between these two data, however I did not have access to their...

05 August 2019 4,207 8 View

How can I prepare a preparative TLC plate (PTLC) using sodium carboxymethylcellulose as a binder?

How much silica is required per grams of sodium carboxymethylcellulose?

25 April 2019 7,824 2 View

Suitable Components and Instruments for Organic Rankine Cycle (ORC)?

Hi everyone, I am currently developing a small scale ORC system with R134a as working fluid , and I have only 5 main components (expander, condenser, pump, evaporator and tank) in hand. May I...

25 March 2019 4,015 6 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 1 View

How to run raise regression in R?

if anybody know how to run raise regression in r, and raise parameter selection, please help me

24 February 2021 8,199 1 View

Can anyone suggest me the best way for Regression analysis of Accidents?

Dear Altruist, I want to make a regression analysis based on accident data. But I am not finding the necessary information about what type of regression is more applicable for analysis accident...

23 February 2021 9,956 3 View