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

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

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

What are the existing open bite classifications?

I need updated information on existing open bite classifications. If they are based on cephalometric measurements even better.

11 January 2020 6,846 1 View

Can anyone help me to identify this tissue?

This image corresponds to a canine heart sample taken on the nearest of the coronary sinus area, at the right auricle. We have suspected of chagasic myocarditis. Could be this area the sinus node?...

01 July 2019 1,235 1 View

Anyone knows about a quick 'sucrose preference test' in rats?

Different protocols to measure anhedonia in rats by 'sucrose preference test'. Not an standard procedure available.

12 March 2019 1,129 6 View

Is there any company selling a dry transfer station for 2D materials?

Most of the people build their own transfer stations to move flakes of 2D materials (e.g. graphene), but I'm interested in knowing if there is any company selling a complete transfer station...

20 February 2019 8,913 3 View

Are samples resuspended in RLT buffer suitable as starting material for TRIzol extraction?

I collected my samples in RLT and stored at -80c. Later on, i am considering to use TRIzol extraction instead of Qiagen's protocol. The question is: may I add TRIzol to the sample and perform the...

11 February 2019 2,743 2 View

How UAV or drone can be beneficial to better estimate crop yield?

As we know, crop yield estimation has been done traditionally with farmer's expert knowledge, deductive sampling in representative areas, and remote sensing with satellite imagery. Farmer's Expert...

01 March 2021 3,468 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

Analysis of CRD two factor using R studio ?

Hello everyone. I have conducted the research on post harvest longevity of tomato crop using plastic packaging and different doses of chemicals as two different factors. The design of experiment I...

28 February 2021 8,189 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Where i will get the Desmodium and Napier grass seeds?

26 February 2021 975 4 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

What are the LAB methodologies (procedures, equipment etc) for CO2 enrichment experiments to study crop responses?

I am doing a proposal for a research entitled 'GRAIN YIELD AND QUALITY RESPONSES OF WHEAT GENOTYPES UNDER CO2 ENRICHMENT AND EXTREME EVENTS' I will be using climate chamber and I would like to...

18 February 2021 6,494 4 View

Can bio-decomposer be a successful alternative to reduce residue burning?

To maintain the proper crop plan most of the times there is not enough time to make the field ready for the next crop. In this particular context , can bio-decompser be a solution? What about...

16 February 2021 7,068 24 View

How much costs direct reduction of nitrogen on farmland in terms of lower crop yield?

Dear research fellows, I wonder if someone knows how much direct reduction of nitrogen on farmland costs in terms of lower crop yield expressed as EUR/kg nitrogen (or similar)? I understand that...

15 February 2021 1,323 3 View

What is the paradoxical effect of VINASSE in terms of low pH (<4) and high EC (>50dS/m)? What is its impact on soil properties and crop growth?

What is the paradoxical effect of VINASSE in terms of low pH (50dS/m)? What is its impact on soil properties and crop growth?

15 February 2021 3,142 6 View