Military University Nueva Granada

The first annotated checklist of the bees of Colombia reveals an overlooked diversity and areas with major data deficiencies

Background Most existing knowledge about bee biodiversity comes from temperate regions, where diversity is presumed highest—yet substantial data gaps across the tropics confound this pattern. Checklists are critical for documenting species presence, identifying knowledge gaps, an...

Response and Failure of Los Grillos Bridge to a Slow-Moving Landslide

Abstract A reconnaissance mission was organized by the American Concrete Institute, Committee 133, to visit the Los Grillos Bridge in Colombia on September 13, 2023. The bridge is a post-tensioned cast-in-place segmental cantilever structure featuring a box girder spanning 180 m....

Water relations and gas exchange across developmental stages in the páramo rosette Paepalanthus alpinus Körn. (Eriocaulaceae) in the tropical high Andes

Alpine environments impose strong and rapidly fluctuating constraints on plant function, yet ontogenetic modulation of physiological strategies in tropical alpine rosettes remains poorly understood. We examined stage-specific variations in leaf water potential and gas exchange of...

Efficient Removal of Tartrazine from Aqueous Solutions Using Eco-Friendly Aqueous Two-Phase Systems (ATPSs)

Synthetic dyes are widely used in industry; however, their release into the environment without adequate treatment poses serious risks because of their toxicity and adverse effects on human health and aquatic ecosystems. Although conventional methods are effective, they are often...

A hybrid Fourier–PSO model for hourly wind speed forecasting over a 4-year horizon: A tropical coastal case study

Modelling wind speed at hourly resolution over multi-year horizons remains challenging, particularly in tropical regions influenced by strong climatic variability. This study presents a hybrid Fourier–PSO framework for four-year ahead wind speed forecasting using ERA5 reanalysis...

A Cogenetic Proof of the Poincaré Conjecture

This release presents a process-first Cogenetic proof of the Poincaré theorem. The manuscript begins with the independently derived Cogenetic non-collapse relation and its reciprocal magnitude-resolution ledger, then contextualises that invariant in a closed connected three-manif...

A Cogenetic Proof of Global Regularity for the Three-Dimensional Incompressible Navier–Stokes Equations

This manuscript presents a Cogenetic proof of global existence, smoothness, and uniqueness for the three-dimensional incompressible Navier-Stokes equations on R3 with positive viscosity and arbitrary smooth divergence-free rapidly decaying initial velocity. The proof identifies t...

A Cogenetic Proof of Global Regularity for the Three-Dimensional Incompressible Navier–Stokes Equations

This manuscript presents a Cogenetic proof of global existence, smoothness, and uniqueness for the three-dimensional incompressible Navier-Stokes equations on R3 with positive viscosity and arbitrary smooth divergence-free rapidly decaying initial velocity. The proof identifies t...

Time as Measure, Not Ontology

Time is ordinarily treated as an independent parameter against which physical change is measured. This paper instead derives a parameter-free relational timer from a microscopic quantum channel that exhibits both irreversible transfer and coherent return. These behaviours arise a...

Cogenesis: Causal Singularity of Now

This document presents Cogenesis as both a universally relational ontology and a predictive physical theory. Relation entails environment: space is the unlimited relational availability within which distinction, expression, and persistence occur, while geometry, metric, dimension...

A New Bis(8-hydroxyquinolinylmethyl) Perhydrobenzimidazole Obtained from a Cyclic Aminal Derived from trans-1,2-Diaminocyclohexane and 8-Hydroxyquinoline

The reaction of 8-hydroxyquinoline and (2R,7R,11S,16S)-1,8,10,17-tetraazapentacyclo [8.8.1.1.8,170.2,70.11,16]icosane under Mannich-type conditions afforded a new quinoline-functionalized diazabicyclic derivative in 27% yield. The structure of the product was established by FT-IR...