How does one interpret Thurstone scale of attitude?

I have administered a 15statement attitude questionnaire with agree/ disagree response codes. The scale was developed as per method of Thurstone scale construction. I am finding mixed approaches...

19 August 2020 4,407 7 View

Mechanism of DNA replication?

I have read this in a book that DNA polymerase can discriminate between ribo and deoxyribonucleoside triphosphate bcoz of steric exclusion of rNTPs from the DNA polymerase active site, as the...

08 June 2020 2,262 6 View

Key elements to consider before rolling out the final survey?

hi, for my quantitative research, i am analysing the pilot survey data. While, my cronbach is looking good, but Tstat, few outer loadings & Pval doesnt look good. Which are the key...

01 May 2020 6,426 10 View

In biosorption process (Lantana camara leaves as biosorbent), why do we get a precipitate after putting the filtrate on hot plate for agitation?

Usually, we get a clear filtrate after performing batch experiments; same is with Lantana indica leaves as biosorbent. But, after filtration we observe dark precipitation in this case. Is it due...

03 April 2020 9,406 1 View

Unit of power in line spectrum from conversion from log scale(dB) to linear scale(?) ?

I have a doubt about the unit of amplitude on y axis on linear plot of a sound wave generated in Matlab. In logarithmic scale it is dB but I am confused about what it should be on the linear scale...

04 September 2019 6,644 4 View

Which turbulence model give best results to capture flow characteristics in S shaped diffuser duct in context of ansys fluent?

computational fluid dynamics problem

03 September 2018 1,128 4 View

Which solvent system(s) can specifically be used to elute triterpenoids from leaf extracts using column chromatography?

I am using Chl:meth system to elute the triterpenoids through column chromatography using silica 60-120 mesh. But high amount of impurities are coming with the desired molecule. If the molecule...

25 April 2018 7,287 3 View

I have extracted plant phenolics in aqueous methanol and want to prepare solution for gc-ms analysis to quantify phenolics. Help me in prep solution?

I want to quantify phenolics present in my aq. methanol extract using gc ms. But i want to make the extaract volatile so that it could separate out the phenolics. Please guide me to prepare my...

17 April 2018 6,145 4 View

Can bacteriophages be used against biofilm forming within indwelling medical devices in-vivo?

14 August 2017 4,098 3 View

What are superconducting fluctuation?

https://journals.aps.org/pr/abstract/10.1103/PhysRev.156.396 States that "Fluctuation occurs which drives the amplitude of the order.parameter to zero at all points on a surface which seversthe...

18 June 2017 7,684 17 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 View

Why anti-CD20 or other antibodies are not used to label target cells in flow cytometry t-cell cytotoxicity assay?

New to the field of cell therapy. Why fluorescent-labeled antibodies to target cell antigens are not used for determining target cell count by flow cytometry in cytotoxicity assay (eg car-t)? Cell...

21 February 2021 3,278 3 View

How to get better phase shift in C-V curves for ferroelectric devices?

I tried to sweep my ferroelectric devices from -2V to 2V and then from 2V to -2V and The two hysteresis peaks are off by several microFarads. Should i increase bias voltage? I am doing these...

16 February 2021 8,514 2 View

How to model Type 1 collagen structure for finite element analysis ?

I have started a project in which stress distribution in Type 1-collagen scaffold is to be modelled. I am thinking of using finite element analysis to model the structure and the loading...

07 February 2021 5,487 3 View

Why sometimes current- voltage plot in chemiresistors/ FET does not pass through the origin?

I am trying to measure resistance from I-V curve from a chemiresistor/ FET sensor with a keithly sourcemeter. The substrate is soaked/ wet with protein and phosphate buffer only. But the I-V line...

24 January 2021 8,009 3 View

Is it possible to conduct a simple linear regression with a continuous value as an DV and 3 categorical ones for the IV?

I am currently writing my dissertation on the potential effect of bilingualism on intelligence scores. The latter is represented by a scale on the Y axe. My independent variable is the linguistic...

24 January 2021 5,336 2 View

Where can I get a Music therapy database for Alzheimer's Disease?

I am working on the effect of music therapy on persons with Alzheimer's Disease. I require EEG signals of healthy individuals and people with Alzheimer's Disease/Dementia that have undergone music...

22 January 2021 8,613 5 View