Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

Not able to charge-discharge Li-ion coin cell at higher C rate ?

I am working on cathode material. I have made different Li-ion coin cell against Li metal using commercial available cathode materials such as LCO,LMO, LFP and NMC and also with the lab...

18 February 2021 1,450 3 View

Can a random-intercept cross lagged panel model (RI-CLPM) be indentified with just two measurement points?

I am currently planning out my masters' thesis design and will be working with a large data set with variables that have been meseasured at two time points. Intially I thought of just using a...

21 January 2021 9,384 4 View

How can I calculate convective heat transfer coefficient from turbulent boundary layer properties?

I know many textbooks include empirical relations between Nu, Re_x, and Pr inside a turbulent boundary layer on a flat wall. However, I want to directly calculate h from known boundary layer...

19 January 2021 1,294 3 View

Can any one suggest the name of Litchi insect/predator?

Is it a type of Ambush bug or what? Thanks

14 January 2021 9,381 3 View

How can I produce Alpha-monopropionin and Alpha-monobutyrin in lab scale?

I understand that glycerol should be reacted with propaoiocic acid to produce monopropionin and with butyric acid to produce monobutyrin , if you can help with the reaction conditions based on 1...

13 January 2021 1,151 4 View

Why are species accumulation curves shorter in R than Primer?

I have previously used Primer to output species accumulation curve results (including Chao, Jacknife and Bootstrap estimators), and from memory if I had 40 study sites, there would be 40 numbers...

23 December 2020 8,514 2 View

Can i get help about Buffer composition in BN PAGE ?

Hi guys, I'm planning to do Blue Native PAGE. Are there any problems when i use buffer composition bellow ? Electrophoresis Buffer (1L) 3.0g Tris 14.4g Glycine 5x Sample Buffer...

09 December 2020 169 3 View

Is there any method to estimate scale of eddy viscosity?

Hi, I am currently studying turbulence theory, and eddy viscosity keeps bothering me. Is there any way to estimate scale of eddy viscosity? For example, textbook proposes \nu_T ~ ul, in which u...

02 December 2020 616 6 View

TdT vs. PAP for polyadenylation?

Hello, From my understanding, there are two ways to add polyA tails to RNA. 1) with polyA polymerase (PAP) and ATP to RNA or 2) with terminal transferase (TdT) plus dATP and ddATP to ssDNA...

18 October 2020 6,078 2 View

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 View

Convert unit from OR per SD to 1mm for meta analysis?

I would like to ask if someone could help me to convert unit from OR per SD to 1mm for meta analysis. for example The age-adjusted OR per SD cIMT for MMSE

16 February 2021 6,476 2 View

For continuous variables, in which threshold value we should perform rating up the quality of evidence in Grade analysis?

If the mean difference was used to measure the effect estimates in comparisons, in which threshold value we should perform rating up the quality of evidence in Grade analysis. In terms of Risk...

26 January 2021 5,513 3 View

How to detect spurious correlation in a statistical dataset with binary variables?

17 January 2021 7,892 25 View

In meta-analysis of binary outcomes, what should we do when the occurrence of outcome is zero in both groups?

In conducting meta-analysis of binary outcomes (in RCTs), in case the risk ratio has not been reported, what should we do with the studies that the number of outcomes occurrence is zero in both...

09 January 2021 2,802 5 View

How can the moment tensor inversion results can present good waveform fit (synthetic and observed waveform) from generalized Cut and Paste scheme?

Depending upon the distance of the seismic station from the epicentre, the quality of waveform data and the improvisation of the synthetic waveform on it is often a question. If the Pnl waveform...

31 December 2020 6,602 2 View

Puncturing Turbo codes using comm.TurboEncoder?

I am working on a Turbo encoder decoder system for DVB. Wanted to puncture turbo code in encoder. I am using comm.TurboEncoder object/function in Matlab. Is there an option or way to get punctured...

22 December 2020 5,069 2 View

How the data is to be structured for Random effects meta analysis in Stata 16.0 (for Risk Ratio)?

From a big data, what are the steps to generate a dataset for doing Random effects meta analysis in Stata software? Thanks in advance.

13 December 2020 3,559 4 View

Can you pool the effect size with just odds of an event (not odds ratio) within a single group?

Hy, I am interested in conducting a meta-analysis on effect of intervention in a single group. The primary outcome is clinical success of intervention as a binary outcome. There is no control...

12 December 2020 7,578 3 View

How to reverse unit direction of odds ratios for meta-analysis?

Dear all, I am trying to figure out how to convert odds ratio per unit decrease into beta value per unit increase. E.g. OR = 2.3 per 1 mg/dL decrease -> Beta = x per 1 mg/dL increase. I am...

02 December 2020 7,467 3 View