How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

No title

Hello, I am using Coulomb 3.3. When I try to use the option "Build input from CMT or focal mech. data" I have the next errors: Unrecognized function or variable 'deg2utm'. Error in distance2...

18 January 2021 4,487 4 View

How do you prepare the 4X Laemli sample buffer for use?

Hi, I am preparing to do a western blot and I need to add 4X Laemli sample buffer to my samples before adding them to the gel and I had a few questions (I am using the Biorad 4X Laemli sample...

13 October 2020 9,485 1 View

Does anyone have experience with movement-based kernel density estimation (MKDE)?

Hello, I have mapped the locations of several individuals of a certain species of bird. I have the GPS coordinates, the date and the time data every half hour for several consecutive days and I am...

26 September 2020 3,712 2 View

A white mass inside the head of a cretaceous ant. What can it be?

I have a small piece of Burmese amber with a worker of the stem ant Gerontoformica sp. When focusing the head using incident light, it can be seen a white bilateral structure with several lateral...

26 August 2020 9,688 10 View

How can I generate TWDP random data?

Hi, I'm currently trying to understand the "Two wave with diffuse power" (TWDP) probability density distribution and test a method of moments estimator. However, I have a problem generating data...

20 August 2020 674 3 View

Do you think the teacher should switch roles with the students while teaching a foreign language through TIC?

There are some theories, as Pelgrum and Law (2003) suggested that it is necessary to make a switch between the teacher and the student roles. I mean, the student should be also the active role in...

15 July 2020 5,169 15 View

About Fortran and defining the units?

Hi to all. I am doing a large set of calculations employing as input files called 1.log, 2.log, 3.log,......, 300.log. Usually I use this definition for the input file: OPEN(5,FILE='...

12 July 2020 5,027 12 View

What is happening to my multiplex PCR?

I am developing a multiplex PCR assay to identify three strains of bacteria (A, B & C) of which two of them (A & B) are very close-related amongst each other. Two pairs of primers were...

27 May 2020 8,824 6 View

How do I detect primer dimers in an electrophoresis gel? and how to avoid them in a PCR reaction?

Hello! I am investigating plant-pollinator interactions by means of metabarcoding of pollen loads. The approach we want to use is dual-indexing in a two step PCR process. We are using four...

04 May 2020 7,455 6 View

Which are the factors that determine in a tourist the destination for their travel?

I'm working on a study of how selection criteria of Tourism have changed considering Pandemic + Vaccination expectation, so propose a new prediction behavioral dynamic model for Riviera Maya (Mexico).

09 February 2021 314 7 View

What are the environmental variables that influence the Northeastern gray whale population?

I am currently working on my M.Sc. thesis studying how climate change affects the presence of the gray whale in one of its main breeding areas in Mexico. We have considered temperature,...

16 November 2020 8,944 3 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

Which railway magazines in South-/Central America and Mexico to publish - who has a recommendation?

Which Railway magazines are relvenat in Middle and South America? We want to publish a technical article about vibration reduction measures carried out in Mexico. Who has a recommendation or give...

18 May 2020 3,487 4 View

Can you help me to identify an ammonite?

Hi! I found a very particular stone full of ammonites in a river in the Colombian Andes, over 2500 m a.s.l. Is it possible to identify the genus? Any thought?

01 February 2020 5,336 2 View

How to arrange cross-sectional pooled data in excel..?

I am working on a project which one country has ten trade partner countries I will take ten time period data, for example, US trade with Canada, China, Mexico and Brazil (US export and also...

15 December 2019 8,047 2 View

Is this ammonite determinable? can I get some help?

presumably upper Lias from strongly tectonically stressed limestones of the Nordkarawanken (Austria)

07 August 2019 8,785 1 View

Can anyone kindly share strong motion data of mexico 1985 and victoria?

I am presently working on a project which requires strong motion data of mexico 1985 and victoria. I tried to search databases but files are either corrupted or removed. kindly if available share...

06 July 2019 2,402 2 View

How do case study contribute to the understanding of public policy in Mexico? What articles do you recommend?

04 May 2019 1,622 5 View

Can someone suggest any source to download rainfall data and stream flow for the central Mexico-Conauga?

I am trying to calibrate a hydrologic model for a large watershed in central Mexico(Lerma). I found several stream gages in the watershed, but hourly streamflow data from the gages is not...

17 January 2019 3,942 12 View