Interesting BuLi reactions?

Dear colleagues! At the moment we are looking for "nice" reactions employing BuLi solutions for our practical training at the university. We aim to expand our five standard BuLi reactions to a...

08 December 2020 6,481 10 View

Are the particles well dispersed based on my results below?

What I want to do: I have a colloidal dispersion which comprises silicon dioxide (SiO2) particles (diameter=450nm) and poly(ethylene glycol) and want to confirm that the SiO2 particles are well...

16 November 2020 817 16 View

Methodology Design Feasibility / Ideas for Methodology?

Hi, I am trying to come up with a methodology to better understand how effective are SETs at evaluating faculty performance in the classroom? I was thinking about a design in which a faculty...

09 November 2020 156 3 View

The response rate of the highly cited journals to the topic COVID-19?

Dear member, Does anybody knows that Highly cited Journals is faster responding to submission with COVID-19 topic (Especially Economics Journals), and what is the average time for response? I...

26 October 2020 7,888 8 View

Do you know of a researchable topic within course evaluations?

Hi, I am writing my dissertation and I am doing it on course evaluations. I have always wondered what happens to them after students click "submit". Do they inform practice? I believe that if...

11 October 2020 2,634 4 View

Any advice on running quantum espresso on a single Imac??

I have been using VASP for years now and wanted to try out QE on my home IMac since it's open source. Does anyone have any advice?? I recently wiped and reinstalled the OS on the mac so it is...

29 September 2020 5,195 2 View

Do you know of publications reporting fisheries post-release survival rates of marine turtles?

We are compiling publications that estimate marine turtle survival following release from fishing gear. We've identified a handful of relevant pubs and hope to identify a few more.

17 September 2020 3,194 6 View

How can I save one image from an image stack?

Hi, I've received a TIF file comprising 20 images (yes, 20 images compiled in one TIF file).. I can view the 20 images with windows photo viewer but I can't save the image I want.. Please help me....

06 August 2020 5,043 3 View

I have a 5-year combined crash data (2013-2017). What representative traffic volume data should I use for crash frequency modeling?

I have a 5-year combined crash data (2013-2017). What representative traffic volume data should I use for crash frequency modeling?

28 April 2020 3,064 1 View

Why do different methods in python, result in different values of zero??

I am using numpy in python along with the linalg package to solve for the eigenvalues and eigenvectors of a 2x2 matrix. I also did this by hand, and coded the brute-force algebra step by step to...

23 March 2020 9,411 2 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

Any easy method of analyzing vitamin D in foods by HPLC?

Looking for method of extracting and analyzing vitamin D in foods by HPLC

24 February 2021 7,524 7 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 to get better phase shift in C-V curves for ferroelectric devices?

I tried to sweep my ferroelectric devices from -2V to 2V and then from 2V to -2V and The two hysteresis peaks are off by several microFarads. Should i increase bias voltage? I am doing these...

16 February 2021 8,514 2 View

How to assign two different material/section properties in Abaqus(UMAT)?

Hi everyone, I am conducting a non-linear multi-layer pavement structure analysis which is a stress-dependent. So far, I am able to define the nonlinearity for one soil layer for its resilient...

11 February 2021 9,607 3 View