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

How to consider effects of rapid warm adaptation in modeling of ecological impacts of warming?

I would highly appreciate it if my fellow ecologists (biologists) provide their opinion on the thoughts below [esp., shortly tell us which path may be more effective, if they know another way, if...

15 February 2021 3,642 6 View

Loss of biodiversity its impact on terrestrial ecosystem?

I need research papers with problem statement as well as research questions in respect of the above mentioned topics

04 February 2021 2,240 15 View

How deep into the sediment do marine/riverine oligochaetes live?

I am working with intertidal muddy sediments. In one of my sites the sediment was extremely muddy (high % of silt), oxic layer was shallow, and there were a lot of oligochaetes. I would like to...

14 January 2021 7,269 4 View

Can anyone identify this fungus/mushroom from China?

The pictures were taken in Guishan Mts in Yunnan. The fungus is ca. 10-12 cm high.

07 January 2021 6,639 10 View

Is there any relevant technique for mesocosm studies in marine environment using Nanoparticles?

I am planning to perform mesocosm study in simulated marine environment using Phosphorus based nanoparticles, i would be using marine micro-organisms in it. kindly suggest me some effective...

07 January 2021 5,877 3 View

How does titanium dioxide (TiO2) as a coating's component enhance the coating performance in terms of anticorrosion??

Greetings, Recently, I was asked by a researcher how does TiO2 enhance the coatings polymeric structure making it able to reduce corrosion reaction by preventing the penetration of aggressive...

02 January 2021 5,257 5 View

Can forward and reverse sequences of PCR products be entirely different from each other?

Dear All, The forward and reverse sequences obtained from the PCR products are not identical at all. Can I still make the contigs for doing BLASTn? Individually both sequences are showing the...

22 December 2020 5,280 5 View

Is there any chemical safe for sea environment, but could be used for repelling planktons and microorganisms?

As an example of Julia Child, whose first receipe was shark repelent, my team and I are looking for some chemicals which wont harm planktons but will help keep planktons from our robot in sea.

20 December 2020 9,616 4 View

Hybodontiformes - last survivors?

Hello Everyone, I just ran into the work of Boisvert et al., 2019, in which I found fig. 4.2 a bit confusing. It shows, that Hybodontiformes (pale green) survived till the Miocene, however, as...

13 December 2020 5,180 3 View

What is the most controllable (marine) bacterial culture you can cultivate in simulated seawater?

02 December 2020 6,796 3 View