How can we estimate sample size for a moderated mediation analysis with more than two mediators?

How can we estimate sample size for a moderated mediation analysis with more than two mediators? I am looking for scripts, macros, syntaxes, that allow us to estimate sample sizes for research...

15 February 2021 6,813 3 View

In your opinion, which is the best software for reviewing Papers? Why?

How effective and helpful is it, really.

25 January 2021 6,988 73 View

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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

What fluorescent dye can be used in fixed cells for membrane imaging?

07 January 2021 4,802 2 View

Have you cloned a PCR product containing 2X2A sequences into a vector that contains another 2A sequence?

Hi! I am having problems cloning a 1.6 kb fragment containing 2 different genes and 2X2A peptides into a vector that I already used to clone other fragments (digested with PmeI/BamHI). The vector...

17 December 2020 5,218 3 View

Can you suggest a mini research topic?

What are the possible topic in this time except pandemic? Thank you in advance for the suggestion.

06 December 2020 5,380 7 View

QUANTUM INFORMATION: Why a Toffoli gate can be used to obtain any permutation gate?

Hi, i am sudying some quantum computer science and I am really struggling to find an explanation to the question done above. Any kind of help would be wonderfull. Greets.

09 November 2020 4,657 3 View

How to dye the spider gland of a spider to see in fluorescence (488nm)?

I want to use a fluorescence microscope to observe in situ the venom gland of a cleared spider using a 488 nm laser. Any recommendation on what dye to use that would be particularly attached to...

14 October 2020 3,986 10 View

How do you extract DNA from buccal swabs submerged in 70% ethanol using Qiagen DNeasy Blood and Tissue Kit?

Hi, I collected buccal swabs (cotton and foam) from nestlings and adult birds and stored the swabs in 70% ethanol. There are few different protocols on the web but I am wondering if anyone has a...

11 October 2020 6,103 3 View

CRISPR-Cas9: Are there any alternatives to the use of fluorescent PCR and capillary electrophoresis?

We are trying to find alternatives to the use of fluorescent tagged primers and capillary electrophoresis to access somatic activity of the target gene. Thank you!

25 September 2020 4,761 3 View

How is vertical agriculture progressing in Colombia?

Vertical agriculture offers an innovative solution to reduce the pressure of cultivation on soils. The intensive use of machinery and large areas of land harm biodiversity.

28 October 2020 8,773 3 View

Which cognitive assessment tool is used for elderly people?

I am a student working on a thesis and i need assistance on a standardized instrument with the scoring key. I am going through MOCA, ADDEN BROOK and HMSC but could not find out which on is...

11 March 2020 2,817 5 View

No title

20 January 2020 6,200 5 View

How to obtain an overall weighted kappa for test-retest reliability to validate a novel questionnaire? Am I doing it correctly?

I would like to test the reliability of a new questionnaire assessing global physical function in elderly patients. The questionnaire consists of 20 items with a 5 point (0-4) Likert response for...

10 November 2019 622 3 View

No title

Dear researchers, We are working in Colombia with the biological groups: primates and bats. We have been debating about landscape extent area/lenght, and also we have had read many articles about...

09 October 2019 5,771 3 View

Dementia Prevention - Cognitive training - Math protocols or Math games?

Where can I find validated protocols of teaching mathematics to healthy elderly and to elderly with moderate dementia as an independent variable in a longitudinal research study testing the...

09 October 2019 3,011 3 View

Dementia Prevention - Cognitive training - Math protocols or Math games?

Where can I find validated protocols of teaching mathematics to healthy elderly and to elderly with moderate dementia as an independent variable in a longitudinal research study testing the...

03 October 2019 5,363 5 View

Does noise affect, or compound, mercury poisoning in the human body relative to small-scale gold mining?

On-the-ground experience would suggest that sound/noise pollution and mercury contamination may be coincidental in artisanal and small-scale gold-mining stakeholders and their bodies. If so, does...

07 August 2019 5,302 1 View

Does noise affect, or compound, mercury poisoning in the human body relative to small-scale gold mining?

On-the-ground experience would suggest that sound/noise pollution and mercury contamination may be coincidental in artisanal and small-scale gold-mining stakeholders and their bodies. If so, does...

31 July 2019 5,350 1 View

Who is engaged in deprescribing in pediatrics?

I work in a multidisciplinary children's hospital. polypharmacy is a big problem for branches of any profile. All information in the medical literature concerns elderly patients and is not very...

06 July 2019 5,626 2 View