¿Cuales son las principales fuentes de financiación para proyectos de investigación en Colombia?

More David Alexander Urrego-Higuita's questions See All

Is it possible to conjugate an NHS ester to the N-terminus of a peptide ON RESIN?

So i have a few peptides (synthesized by SPPS and not cleaved from resin) and I want to add a maleimide label. We have NHS-PEG-Maleimide and from literature it is evident that the free amine group...

18 July 2024 4,075 3 View

Hot to do MTT assay data analysis?

I have repeated an MTT assay three times using different batches of the same cell line. Each time, I tested the same treatment (different medium) and seeded the same number of cells. Additionally,...

08 July 2024 1,900 1 View

What is wrong with Site-Directed Mutagenesis?

I am following the NEB protocol to perform SDM with Q5 and NEB HiFi Assembly. I am making a two base pair change. First picture is my Primers designed with NEBaseChanger. Second Picture is my...

24 June 2024 6,079 4 View

Does anyone have suggestions for this esterification?

I have a very polar alcohol (soluble in MeOH, H2O, partially in heated DMSO). And a long chain fatty acid that I would like to couple. I can't find a common solvent for them. I can form the...

24 June 2024 9,319 0 View

How do you add multiple nodes or cutting planes in Abaqus?

Hi, In a previous question I asked how to effectively model springs in Abaqus. However, I figured out the feature under Assembly -> springs/dashspots -> node to node Springs. I have a cylinder...

20 June 2024 892 3 View

How do you add radial spring elements in Abaqus?

Hi, I am trying to complete a buckling analysis on a tube with an external pressure. This solves itself easily by adding radial constraint on the internal edge of the tube, one axial constraint...

17 June 2024 8,165 7 View

Why are reaction forces so high when I add vibration to cutting model?

Hi I am trying to model a cutting problem with a blade and comparing the results with and without ultrasonic vibration. From experimental results in our group, the use of ultrasound can...

13 June 2024 7,461 4 View

Best Tools for Wrist PPG Signal Analysis: Your Recommendations?

I'm conducting research on photoplethysmography (PPG) signals obtained from smartwatches worn on the wrist. The main goal is to analyze the PPG waveform and extract key fiducial points and...

13 June 2024 3,286 0 View

Given that Mesozoic placentals were largely arboreal (with fingers), do you know of any studies that illustrate the finger-to-hoof transition?

I'm interested in the earliest days of placental terrestrial locomotion in large herbivorous taxa. Phenacodus seems to be transitional in this regard. Any others?

06 June 2024 5,182 2 View

Why diagonal terms in Abaqus stiffness matrix are infinite?

I am running some simulations in Abaqus to extract the stiffness matrix of a FE model with geometric nonlinearity. I want to provide to Abaqus a set of nodal displacements (all the dofs in the...

28 May 2024 4,797 2 View

Is this a facetotecta nauplius?

This larva was captured using a plankton net in the Persian Gulf during the summer. I believe it may be a Facetotecta nauplius.

08 August 2024 3,746 4 View

May members post flyers about opportunities to present at a conference? If so, where to post?

May members post flyers about opportunities to present at a conferehttps://veraeducation.com/nce? If so, where to post for the Virginia Educational Research Association? https://veraeducation.com/

08 August 2024 4,585 1 View

Hello all, Looking for international reviewer to review Ph.D thesis in wireless sensor network.Can anybody help?

My name is Apurva Saoji. I am a Ph.D scholar in Computer engineering in India. I am looking for international expert in reviewing my PhD thesis, "Competitive Optimization Techniques to Minimize...

07 August 2024 4,600 2 View

Research Methodology - Impact of Corporate Reputation on Stakeholders Behaviors?

Please can anyone support with the survey questions based on RQ measures and propose how to do it in FMCG industry and include as well the role of brand equity Thanks

06 August 2024 949 0 View

Why do exism movements become permanent dictatorship threats within liberal democracy thinking under majority rule-independent rule of law system?

Exism movements after gaining power within liberal democracies under majority rule and independent rule of law system become permanent dictatorship threats, but why this is the case is not clear...

04 August 2024 8,125 3 View

How to report results of Generalised Linear Mixed Models in a journal article?

Hi everyone, If you have written or come across any papers where Generalised Linear Mixed Models are used to examine intervention (e.g., in mental health) efficacy, could you please share the...

04 August 2024 4,130 4 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Radiogenomics Cancer Research Challenges?

what are the top 3 challenges to the advancement of the field of Radiogenomics in cancer research? is it the availability of easily available low-cost matched imaging and biosamples with clinical...

03 August 2024 5,828 4 View

Would you like to join our meta analysis research team?

I am excited to announce an opportunity for dedicated researchers to join our dynamic team for an ongoing meta-analysis study. If you are passionate about research and have a keen interest in...

01 August 2024 6,737 1 View

Do we save MSMEs of the Nation ?

SMEs are backbone of the country's white economy, most of them are II generation entrepreneurs and migrated from family owned business policies, and having sufficient higher educations for...

01 August 2024 5,562 2 View