05 July 2023 1 8K Report

Quiero establecer si han existido pruebas estandarizadas específicas sobre la gramática en Colombia. No conozco ninguna.

More Alfredo J. Hernández-Abella's questions See All
Are the GABAergic neurons electrophysiologically equal in all brain areas?

Firing in GABAergic neurons has been characterized in several areas of the brain, but patterns are the same?

04 August 2024 4,090 0 View

Ti6Al4V - Phase differentiation between alpha and alpha prime martensite?

Dear Researchers, Is it feasible to distinguish between alpha and alpha prime martensite in the Ti6Al4V alloy under rapid solidification in the as-cast state using XRD, in addition to...

30 July 2024 3,849 0 View

Is possible to edit a gene present in a plasmid by Crispr Cas9?

Hello everyone! Someone working with Crispr Cas9. I have a question. Is it possible to edit a gene that is present on a plasmid (in this case with a low copy number)? In this case, is it possible...

22 July 2024 7,073 2 View

Dear researchers. pl help how to plot jablonski energy level graph and magnetic hysteresis curve in origin?

through origin software

17 July 2024 4,991 0 View

How to adjust the survey weights for non-response rate in a stratified random sample design?

Thank you in advance for your support. We conducted a stratified random survey in 13 strata and obtained a sample size for each stratum. At the time of the survey we had a variable...

01 July 2024 281 3 View

How to reduce the material coming out of the torque rheometer?

A physical mix was in vitro evaluated on a torque rheometer. The composition was predominantly recycled polypropylene (PP), yet the melt flow index (MFI) was found to be excessively high....

25 June 2024 10,154 0 View

What are the best ways to the recount of microalgae?

I know the neubauer method, but I hear about the recount of growth with spectrophotometer.

23 June 2024 9,295 1 View

How to make pre-post data analysis more 'sophisticated' than a paired samples t-test?

As part of my thesis I'll be conducting a single-sample pre-post intervention analysis, in which my only DV is ordinal (7-point Likert scale). In my research proposal I said that I would use...

05 June 2024 3,122 2 View

Is the "snowball metrics" mathematically well-founded?

Snowball metrics is used by scival.com to report some performance indicators. This metrics seems rather obscure from the mathematical standpoint. Unfortunately there is apparently (after a quick...

05 June 2024 7,463 0 View

Is it okay to compare the different result of different organisms in Minimum Inhibitory Concentration? or not since they're not the same?

The organism we used are Saccharomyces cerevisiae and Candida tropicalis. In the disk diffusion Candida tropicalis produce inhibition with 5mm but in Saccharomyces cerevisiae has 0 inhibition. But...

30 May 2024 1,349 0 View

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10 July 2024 6,199 3 View

Is it appropriate to apply the COSMIN guidelines for evaluating the quality of tools used to assess acute postoperative pain?

Hi, I'm a graduate student, college of nursing, chungnam national university in Daejeon. The topic of my thesis is "Quality Assessment of Tools for Evaluating Acute Postoperative Pain." I have...

10 July 2024 3,048 1 View

¿En qué medida las tecnologías educativas están siendo efectivas para promover el desarrollo de habilidades para la vida?

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19 June 2024 2,125 3 View

Which LCA software would you recommend for comparative LCA of electrolysers? And is ecoinvent database alone is enough for such a assessment?

For additional information, I am a master's student looking for a LCA software to do my thesis. So a less expensive one is my first priority, but if it is not able to help me with a clarity...

18 June 2024 8,376 3 View

How are Shannon Wiener values used in the Wilcoxon rank sum test?

Is it very literally subbing in shannon wiener index values instead of species abundances?

16 June 2024 4,533 5 View

¿ Los paises en vias de desarrollo son mas abiertos frente a las politicas migratorias?

Es posible observar que mientras que paises como colombia con altos indices de pobreza y desigualdad, abrieron sus fronteras a millones de migrantes venezolanos, por otro lado algunos paises de la...

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How can I statistically compare shannon index values between two years?

I have six ecosystems in two substrate categories (Triplicates essentially). I have determined shannon wiener index values for each ecosystem and also for the two categories separately. I have...

16 June 2024 6,841 7 View

I am trying to do LCA of Water Treatment Technologies. Are there any recommended introductory resources or textbooks on LCA that you suggest?

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11 June 2024 4,791 0 View

Can Anyone Recommend Papers on OER Mechanism in Perovskites Using DFT?

Hello everyone, I am currently conducting research on the Oxygen Evolution Reaction (OER) mechanisms in perovskite materials and am particularly interested in studies that utilize Density...

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How to explain the difference in LCIA results from ReCIPe2016 and IMPACT World+ with literature?

Hey there, I am currently conducting a life cycle assessment and as advised, I used different life cycle impact assessment (LCIA) methods to check for robustness of results. I found that when...

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