Photoionisation cross section of (singly) excited Helium?

Hello, I am searching the photoionisation cross section of (singly) excited Helium (1s2s as well as 1s3s). I only find either neutral Helium or doubly excited Helium. If someone could provide...

17 November 2020 7,096 3 View

If the daily (hourly) concentration of PM2.5 is not Gaussian. Is correct apply an arithmetic mean in epidemiological studies for risk assessment?

The distribution of daily PM2.5 concentration (hourly) is bimodal in the city of Coyhaique (South of Chile). Coyhaique is the city more polluted by particulate matter accord the WHO. The major...

11 October 2020 2,006 3 View

Residual stresses of heat-soaked hot bent glass - are they different from flat glass?

Usually, during the structural design of flat glass, one does not need to take into account the effects of changes from residual stresses. Question: How to understand and predict the residual...

15 March 2020 681 5 View

Structural steel design - Effective length of a fillet weld according to EN 1993-1-8, 4.5.1 (1) unclear in definition?

In contrast to the older German steel code DIN 18800-1, the Eurocode for steel design defines an effective length of a fillet weld as follows (no sketch is provided in the Eurocode): "The...

12 December 2019 592 5 View

How is the deflection of aluminum frame structures influenced by the stiffness of corner cleats and the fitting tolerance?

How is the deflection of aluminum frame structures influenced by the stiffness of corner cleats and the fitting tolerance? Explanation: An ( orthogonal ) corner where two (extruded) aluminum...

05 June 2019 2,194 5 View

Raman spectra of Melanoidins ?

Hi there, we failed to measure Raman spectra of dark products of the Maillard reaction for several times. In fact fluorescence seems to be a problem even when working with 1064 nm. In addition...

05 June 2018 4,890 7 View

Are there proofs that interest in sustainability is correlated with research based learning ?

Actually we have a lot of discussions how research based learning pushes the interest in sustainability. In our project laboratory of chemistry it seems as if the students are activated to get...

05 June 2018 1,430 6 View

Outcome and competence level achieved by digital teaching ?

Hi, actually we have a strong discussion going on, if learning outcomes and competence levels rise when applying digital elements in the classroom. It seems that any approach is biased because...

05 June 2018 3,734 3 View

PCA (Principal Component Analysis) and its application in identification and analytics with IR spectroscopy ?

We measured a series of spectra of individual compounds and got a good separability with PCA Analysis. The questions risig are as follows: What happens if we ad mictures of the individual...

05 June 2018 5,627 3 View

How can we program a "proof of correctness" for internet related data ?

Actually I am searching for a tool that helps me to proof the correctness of internet related data, e.g. by comparing some information with other sources , averaging the results and rating the...

05 June 2018 9,352 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 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 to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

How do I choose contrasts in SPM8?

I am learning how to use SPM for PET and PET-MR analysis, but I haven't found any great resources that explain how contrasts work. I have a series of PET images where our hypothesis argues that...

24 February 2021 1,534 2 View

Why am I getting 'Infinity' and 'NaN' in my mixed-mode energy release values?

Hi everyone, I am currently running a mixed-mode simulation of a DCB using a user-defined cohesive zone model (UEL), however, the results I am getting don't make sense. I used the same UEL for...

24 February 2021 4,157 1 View