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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

No title

Does anyone have the experience of using Taq Man probes in the QIAGEN Rotar- Gene qPCR machine?

01 March 2021 5,311 1 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How can we add reinforced thermoplastics with granules in injection molding machine?

I need to make an injection molding machine in which short fibers are to be introduced. Short fiber length and material properties are to be determined and also the material strength are to be...

22 February 2021 4,290 1 View

Why is my qPCR suddently not working?

I've been working with qPCR for some months now. I amplify 2 genes (PSEN2 and HN1), and the protocols are optimized for both and have been working fine. The other day I amplified HN1 for some...

21 February 2021 3,437 3 View

Drop weight impact testing machine for composites?

Dear all, I hope everyone is safe and healthy I do have a question please. Where can I find a drop-weight impact testing machine to test fiber reinforced polymer composite plates (CFRP and GFRP)...

17 February 2021 3,820 3 View

Does anyone know if the Quantstudio 3 qPCR machine requires a passive reference when Using SYBR? I ran a qPCR and got the plot in the attached file.?

I know that my target is in my sample as I extracted it from cell culture myself. These plots show some amplification. The first one seems O.K for the first 36 cycles but then collapses at the...

14 February 2021 2,809 2 View

What kind of tape can be used to fix the samples on an XRD machine?

I have a very thin sample, the thickness is around 1 mm. I want to do X-ray diffraction measurement on the thin side of the sample. What kind of tape can I use to fix the sample, and will not...

13 February 2021 4,153 3 View