What is the scale recommended to measure human's baseline mood?

I am working on my Final Year Project, interested to look into emotional measurement of consumers in selected food product. One of the aspects in emotion measurement, I am interested to find out...

01 October 2019 1,241 3 View

How to remove the KOH from ethanolic etherification without using extraction method?

Etherification was carried out between aromatic -OH group and alkyl chloride in the presence of ethanolic KOH. The precursor is a bulky dye compound that consists of an aromatic -OH group and an...

23 May 2019 7,830 5 View

What software quickly collect full content from tens of thousands of social media post?

Hi, I am doing online ethnography, need to analyse the content meaning, narrative and theme of people's social media posts on a specific social event. The problem is: There are tens of...

05 May 2019 6,456 3 View

Why the siRNA could reduce mRNA expression but not protein expression?

Recently, I want to knockdown the expression of one gene with siRNA. There are four siRNA sequence targeting the gene. They can silence target gene expression by at least 75% at the mRNA level,...

08 July 2018 6,916 5 View

Is it possible for a polymer to have optical band gap of 1.3 V and electrochemical band gap of 1.7 V?

Based on the reviews I read, most polymers got close value for optical and electrochemical band gap. I tried to calculate these band gap from UV-vis spectra and cyclic voltammetry. But the band...

01 January 2018 9,567 2 View

How to balance the bonding strength and contact resistance in the junctions and interfaces between different materials?

26 July 2017 8,771 4 View

Can I use cellulose Soxhlet thimble instead of glass fibre thimble for the Soxhlet extraction in polymerization?

I read that most previous studies used glass fibre thimble instead of the cellulose thimble. The solvents are methanol, acetone, hexane, toluene, dichloromethane, chloroform. If I use cellulose...

15 May 2017 397 2 View

Why the entire FTIR spectrum shifted to the left after dimerization?

18 February 2017 1,096 3 View

How can I get freshly powdered KOH from commercially bought KOH pallets?

The KOH absorb atmospheric moisture quite fast when I manually powdered it.

06 February 2017 862 3 View

Small Tafel slope in HER does not necessarily mean high exchange current density and low onset potential?

Recently I am doing HER experiment by using amorphous MoSx. I controlled the experiment conditions and found that, some samples have low Tafel Slope(which is good) but low exchange current density...

16 January 2017 8,072 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View