How should I compute a new variable with z-scores?

I would like to create a new variable using 4 different measures: hIndex (range: 1-47), # of publications (range: 0-111), and 2 other measures (range: 1-7). I changed all of these variables into...

09 February 2021 4,866 3 View

How can you confirm new liquid FTIR cell fits calibration?

We have an FTIR instrument which was calibrated in transmission/absorption mode using a set of cells for different ranges of D2O concentration. One of the cells at high range broke and the new one...

16 January 2021 4,791 2 View

Is there any possibalities of PDMS coating on Biochar Powder?

Hello, I'm doing a research regarding gas adsorption on hydrophoobic biochar. Is there any way to coat PDMS on the biochar powder?

05 October 2020 5,610 1 View

Free database for auditory stimuli?

Hi, I'm currently looking for auditory stimuli (list of letters; word/non-words; etc) to include as distraction task in my experiment. Does anybody know a free database that I might download?...

04 October 2020 9,614 3 View

Would you indicate treatment by intralesional injection for bone metastasis?

Hello people! I would like to understand if oncologists and doctors in general would be interested and indicate treatment for bone metastasis originating in breast cancer, ER +, PR +, HER-2 - with...

14 September 2019 4,322 3 View

Is my new measure "more valid" than existing measures?

How do I determine whether a new measure I'm developing is "more valid" than existing measures of the same construct? I'm proposing to develop a new measure that is more inclusive of the...

15 May 2019 9,893 4 View

Is it possible to perform electroplating on several substrates at the same time ?

Hello everyone I am doing FeNi plating on glass slide through photoresist mask. I do it in a beaker with 3d printed anode and cathode holders. It works well but the process can take more than 9...

13 May 2019 5,251 4 View

qPCR melt curve peak doesn't correspond to gel, why?

I'm having an issue with non specific binding of my primers. I've tried many primers and this is the least messy primer pair but I am still getting a second melt curve peak when doing serial...

19 September 2018 3,940 3 View

Recommendation for molarity of Citrate buffer to use with C2C12 myotubes?

I am planning an experiment using TTX on C2C12 myotubes. The TTX should be reconstituted in citrate buffer pH4.8. I am now trying to find out which molarity of citrate buffer can be used for C2C12...

05 July 2018 2,754 1 View

Two-way ANOVA: binary IV and MV and non-normal continuous DV?

Hello everyone, I really need your help! I am doing my bachelor thesis and I am struggling with the following. I want to do moderation analysis with the following variables: - IV: Collaboration...

11 June 2018 9,607 7 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

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

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

What are your alternative data collection methods during the pandemic? What are the pros and cons?

Dear colleagues We are exploring possible data collection methods for environment and behavior research in the context of architectural environments. Have you conducted any Post Occupancy...

16 February 2021 2,575 4 View

Abaqus: deactivate displacement boundary condition?

I am running analysis of a cross-shaped sample that is prescribed a displacement along x and y-axes. I have run several jobs with this model and had no issues. However, the current set of...

15 February 2021 1,680 8 View