How much could knowing the maturity level of an organization contribute to a given process?

The doubt is raised because there are several methodologies to estimate the degree of maturity of certain processes, such as computerization, communication, human resources, among others, and...

03 February 2021 4,753 7 View

Are there any public datasets of consumer complaints about service industries at the European level?

06 January 2021 1,718 2 View

PLS-SEM generalizability issue?

I'm developing a readiness assessment model regarding contractors' preparedness for a specific activity, in order to do so, a survey study was carried out and the data analyzed with PLS-SEM to...

24 November 2020 399 1 View

How to use a .pdb file as structure template to modeling on Chimera 1.14 ?

Hi, I need to use an own file as a template to modeling on Chimera (using Modeller). When I try to blast my sequence only find the option to query structures available on PDB Web Site. Does...

26 October 2020 2,436 3 View

What statistical tool should I use if my method of research is a combination of one expert and group of respondents?

My research is about teachers' competence to programming languages. These teachers will come from two universities in a city. I will conduct a survey much like an exam in which the teachers will...

23 September 2020 465 3 View

Combining multiple spring constant in umbrella sampling?

I have experienced insufficient sampling for high energy states in particular windows. The spring constant is not enough stiff to keep the value of the reaction coordinate. I know that you combine...

23 September 2020 7,800 2 View

Why is my molecular rotor displaying a bathochromic shift in toluene compared to MeOH or EtOH?

Hello, I am studying the photophysical properties of a molecular rotor which unexcpectedly, shows a lambda(max, absorption) = 565 nm in toluene, but a lambda (max, absorption) = 540 nm in MeOH...

15 September 2020 7,830 3 View

Incorrect FEM stress analysis with quadrilateral element... why?

Hi everyone, To put this in context, , I am making a Matlab algorithm for topology optimization that consider fatigue breaking. I am basing on the Ole Sigmund algorithm, which discretices the 2D...

11 August 2020 1,532 6 View

Why do I get multiple peaks of my protein when measuring molecular weight using MALDI-TOF?

I have gotten the MALDI-TOF results of my protein (Gliadin from wheat) however it shows different peaks. What does it say about my protein? (see readings attached) I need to know the total...

27 July 2020 1,074 1 View

How to convert .txt into plink files (ped/map or bed/bim/fam)?

I have a huge oncoarray_genotype_XXXX.txt file with 11.7 GB size. I would like to convert this file into adequate files for analyzing in plink software. However, I could not find how to conduct...

08 July 2020 9,302 2 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 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

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View