Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

Is there a way to automatically gather surface area from a 3D model based on color/texture?

I have been constructing 3D models of large corals and I was wondering if there is a software that I can use to gather the area of live tissue vs dead/disease? I am aware there is a way by tracing...

17 December 2020 6,991 1 View

Randomizing Survey Questions?

I'm currently developing my methodology for an upcoming research project and have a question about the materials I plan on using. I want to incorporate a questionnaire on conspiracy theories and...

16 October 2020 5,232 3 View

How do you deal with multiple submissions to a survey from the same respondent?

Hello, I am a graduate student and I am working on cleaning survey data. When cleaning the data I realized that a few respondents completed the survey twice. I reviewed the survey data to see if...

04 July 2020 5,688 8 View

What is the appropriate statistical analysis for my study?

17 June 2020 4,681 4 View

Why do you not include geothermal science as a Research Area?

You provide a list of research topics including Geology, Geochemistry and Geophysics. However, many workers in the geothermal field specialise in the integration of the information from the above...

08 June 2020 9,616 4 View

Is there a recommended article on RAMAN Spectroscopy and/or FTIR that also works as a guide?

Fellow scientists, I'd like to know if a test solution contains certain leachates, meaning that an extraction method I am developing works. Much appreciated beforehand.

13 January 2020 5,249 3 View

NOAA Hourly Precipitation Data Missing Post 2014?

Hello all, I'm trying to test out a predictive model but I'm having a very hard time trying to find hourly precipitation data. I've looked at NOAA and on the new data repository (NCDC) but I...

28 October 2019 4,757 5 View

Digesting bioplastcs (PLA)?

I am carrying an experiment on which I chronically feed PLA particles to ascidians to check if they accumulate the material or are capable of digesting it. I am also trying with common PP and PET...

10 May 2019 9,370 5 View

Do you know some program or app that allows me to build graphics in macbook air?

Hi everyone. Can somebody help me? I am looking for some program or app that allows me to build graphics of DRX, Raman, EIS, IR data, among others in my macbook air. When I had my windows PC it...

23 March 2019 3,216 2 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 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

No title

03 March 2021 5,360 2 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

Problem with shRNA transfection. Why are only two plates getting contaminated instead of all?

I transfected my LNCaP-WT cells with 3 shRNA plus their NTC two weeks ago and split two puromycin selected cell plates on Friday last week(Feb 26). I checked for GFP in the cells, and they all...

28 February 2021 4,949 3 View

Any specific pipeline or parameter to analyse total transcriptomics study of brain tissue samples?

I have two groups of brain samples, control and treated for example. It was total RNA nova seq sequencing. I tried all the available pipeline like: star+rsem+deseq2, Hista+stringtie+cuffdiff,...

27 February 2021 356 6 View

Why is the efficiency of viral mRNA electroporation in PBMC low?

Hello, I have been struggling with the electroporation of PBMC with HIV-I mRNA. Although the quality of the RNA generated is good, and the handling of the cells in meticulous, the frequency of...

27 February 2021 9,233 3 View

How can we raise the figure when we writing a paper with Latex ?

Hi, everyone. I'm a starter to write a paper by Latex. But I have some difficulty using it. I'm writing the paper with 2 columns. And, there is one figure that occupies the 2 both-sides. I want to...

26 February 2021 3,738 3 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View

Compute for the total volume of concrete needed for the concrete pouring of the foundation including its column up to NGL only as shown in the plan?

Looking for the quantity of cement, sand, and gravel of footings and columns. Thank you!

25 February 2021 3,092 2 View