What factors influence the growth of the informal economic sector?

Business in informality can be caused by factors such as the facilitating business environment, tax rates, forms of consumption by buyers, lack of administrative knowledge, complexity of the...

01 January 2021 7,189 5 View

If an observed d falls beyond the upper limit in equivalence testing, what does that mean?

I have been taking your Coursera Classes and reading some of your articles on equivalence testing, and I do not know how to interpret and effect and its corresponding CI, but I do not how to...

12 October 2020 9,046 5 View

[Energies] Special Issue - Wind, Solar, Load, and Electricity Price Forecasting ?

Dear Colleagues, I am pleased to announce that I was invited as a Guest Editor for a special issue on the Energies journal. The open-access journal Energies (ISSN 1996-1073, IF 2.702) is...

26 July 2020 4,028 4 View

Is valid this complexity theory technique to solve outstanding problems?

04 June 2020 7,203 2 View

Hello Who can help me with this error of hec hms ERROR 41742: Invalid initial loss for subbasin??

This error apears only in subasins with a value superior than 19, 682 in the initial abstraction in the method SCS Number Curve.

18 May 2020 6,985 3 View

Coefficient of variation?

Hi, everyone. What's the different, if any, between calculating the coefficient of variation of a group of data disposed in a experimental design with different treatments (for ANOVA) and a "free"...

20 March 2020 4,871 3 View

Are they valid these complexity theory techniques to solve outstanding problem?

03 March 2020 1,035 5 View

Low 260/230 ratio using Qiagen DNeasy kit?

Recently I performed a DNA extraction using Qiagen DNeasy kit and the results show a 260/230 ratio of 1.05 likely due the presence of phenol or other organic contaminant... I have read that you...

16 February 2020 787 3 View

Looking for very stable and innert dyes, any suggestion?

Hi. I am looking for dyes (preferably green or blue) that are very stable (time and temperature), do not change color between pH 6-9 and do NOT interact with proteins or sugars. Thanks

22 January 2020 4,593 5 View

Please, how to run a Cross-lagged Panel Model in Stata?

I am using panel data to search for the causality between two variables, and I think a Cross-lagged Panel Model would be appropriate. I have 8 waves and I want to run de model wave by wave in...

10 November 2019 9,736 4 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

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01 March 2021 3,905 5 View

Which group formation theory do you recommend for projects that aim to bring together entrepreneurs for training for regional development?

I would like to have ideas about which theories of group formation are suitable for entrepreneurial training projects, with the aim of creating bonds, building trust, and collaboration for...

28 February 2021 4,223 2 View

Are protein samples in SDS compatible with ELISA?

I have used an AllPrep DNA/RNA/Protein Mini Kit QIAGEN kit to extract RNA and protein from my samples. At the end of the protein purification, I resuspend my protein in 5% SDS. Will these samples...

28 February 2021 7,370 3 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View