In processing fish samples for GC MS and/or heavy metal analysis, is there any difference between granded oven dried samples and ashed samples?

What is the difference between granded oven dried fish samples and ashed fish samples in processing fish samples for chemical analysis?

04 February 2021 9,942 3 View

Help with multivariate test selection?

Hi all, I have a dataset containing 2 independent variables (1. Region [North, East, South and West] and 2. Year [2010, 2015, and 2020]) and 4 continuous dependent variables (e.g. height, etc.)....

26 January 2021 9,329 3 View

How to plot data, if in a pair of values (for a paired t-test / Wilcoxon test) one of the two values is missing?

I have a dataset with 100 paired values (pre- and post intervention X). In 20 couples 1 of the 2 values is missing. When I compare pre- to post-intervention values, those 2 couples / rows will be...

04 December 2020 3,044 9 View

Python ODE: how to get the solution of last timestep with solve_ivp?

Hello, to solve a system of ODEs, I set up a Python-code with solve_ivp as ODE-solver. The solver is calling a function, which generates my ODE-system. Inside my ODE-system, I need the previous...

07 May 2020 914 2 View

Is there not a common root of LBM and SPH modelling incompressible fluid flows?

Is there not a common root of Lattice Boltzmann Methods (LBM) and Smoothed-particle Hydrodynamics (SPH) modelling incompressible fluid flows? I see common grounds by means of a mesocopic...

30 December 2019 3,550 7 View

How to interpret cross-level interactions in multilevel models?

My thesis-partner and I examine context level and individual level predictors effect on populist right-wing voting (i.e., Danish People's Party in Denmark) applying a multilevel logistic...

11 December 2019 7,738 2 View

Is the measured area in an image with a bigger scale in Y than in X dependent of the orientation?

I have an image with a bigger scale in Y than in X. In this image I want to measure several areas. Now I need to know, if the true area is dependent of the orientation of the object / area I...

06 June 2018 9,891 5 View

Enhancing or prohibiting factors for the development of binationals' intercultural competence in servicescapes

17 May 2017 4,852 2 View

How do I calculate the adiabatic electron affinity of H3PO at MP2/6-311G++(dp) level?

07 November 2015 8,857 3 View

Forced-choice experiments with "don't know" options?

04 October 2015 5,247 2 View

What role should journals play in leading academic fields?

A recent paper by Yeung and Thomas (2021) on journals in event management opens up an interesting debate on the role of journals as academic fora. They demonstrate that event management publishing...

28 February 2021 3,494 6 View

FDC and FRC cell populations in mouse spleen?

I was trying to isolate fibroblastic reticular cells (FRC) and follicular dendritic cells from mice spleen, but kept getting poor yield. I found from literature that the frequency of FDC is around...

17 February 2021 3,506 4 View

How to best engender critical thinking in K-12 education?

From my observations, there appear to be three principal avenues to engender critical thinking in education K-12: debate; mathematics, and science. For some students, all three avenues are...

04 February 2021 9,605 7 View

What is the best procedure for measuring the pH of aqueous colloidal systems?

There has long been a debate among my colleagues about measuring the pH of aqueous colloids. As I see there is no general truth in the matter, so I ask this question below. What is the best and...

31 January 2021 8,203 3 View

How do we address vaccine hesitancy among healthcare providers?

Healthcare providers have the duty and commitment to protect patients from harm. One way of achieving this goal is by getting the vaccines. But we also learn that the providers themselves are...

13 January 2021 3,638 4 View

Questions on data cleaning and imputation in longitudinal studies?

The study involved mathematics students completing a survey with several scales at three time points. 1) What is a reasonable threshold for missing data to remove an observation? Does this...

04 January 2021 5,582 1 View

What is the impact of nanotechnology application in packaging. will it help in mitigating the pollution.?

Packaging and its impact with regard to pollution are extensively debated during the past two decades. it is expected that introducing nanotechnology for said application should considerably...

26 December 2020 6,763 6 View

Do Radial Basis Function Networks trained through Gradient Descent benefit from Logistic Regression?

When training a Radial Basis Function Classifier for classification problems, we generally train the model by making use of the pseudo-inverse of the design matrix, minimizing the MSE error...

09 December 2020 2,190 1 View

I need Coronary Angiogram Images for Coronary Artery Disease detection?

I need Coronary Angiogram Images(CAI) publically available dataset. Coronary Artery Disease (CAD) is a condition of the heart due to atherosclerosis. Atherosclerosis is the narrowing of arteries...

07 December 2020 6,470 3 View

Where can I find the RG Impact Score for a journal?

I am debating where to submit a paper and would like to compare journals' impacts.

09 November 2020 6,962 4 View