May I use Minimal important difference (MID) in non-normal distribution?

MID is based on Standard deviation, consequently, I should not use it in non-normal distribution. Am I right? If yes, which test may replace MID?

13 December 2020 7,573 3 View

How to formulate interview questions for Turnover Intention?

Currently, I want to gather preliminary data about turnover intentions among employee of a company using interview method. My biggest concern is with the corona pandemic, possibly each of the...

14 May 2020 768 5 View

How to choose the best smooth algorithm for your data in Origin?

I have several curves of applied potential versus electric current with hundreds of points in each of them. I am trying to analyze their first and second derivatives, but they are too noisy to...

27 April 2020 5,932 2 View

Validation study: Can I join two samples from different regions of the same country?

I applied the same questionnaire in two samples (150 and 60 participants) from different regions from Brazil. I would like to join those samples, but I can not do measurement invariance (because...

10 March 2020 3,715 7 View

Is there any protocol for the lactic acid without the use of a kit?

protocol for colorimetric assay

17 February 2020 6,924 3 View

How can I check which constraints are violated (Concert - Cplex Studio 12.10 - C++)?

Currently, I am working on the implementation of a formulation for an optimization problem, at the moment I already have the MIP formulation implemented in C++ using Cplex studio 12.10 with the...

26 January 2020 7,887 1 View

Which is the best way to assess internal consistency in a non-normal data?

The sample coefficient alpha is affected by leptokurtic true score distributions, or skewed and/or kurtotic error score distributions. Therfore, I would like to found a alternative to Cronbach's...

05 March 2019 6,757 6 View

No title

31 October 2017 867 1 View

Using the Shiller PE Ratio (Cyclically Adjusted Price to Earnings - CAPE) on capital structure theory (trade-off, pecking order and market timing)?

Shiller PE Ratio seems to fit well as a proxy to test the Market Tiiming Theory along with the Market-to-Book (M/B). Since the M/B measures the managers 'perception of the company in the market in...

12 January 2017 4,941 2 View

How to reduce an Ester to aldehyde with no alcohol formation?

I'm using a procedure that uses morpholine and DIBAL-H. First I make the complex intermediate of the aluminum (1eq of DIBAL) with the morpholine (1eq) by stirring them for 3 hours. Then, I add my...

31 August 2016 5,531 21 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Can thermal cycler machines be problematic during PCR?

Hi, my question is about the heating of thermal cycler machines and I hope some of you had experienced a similar thing previously. There are two thermal cycler machines in the lab(BioRad) and for...

26 February 2021 4,777 4 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View