ISSN 2673-494X
Two-page Reports on Science

Cuban Sci. 2023, Vol. 4, Issue 1

Natural Sciences (6 reports)

Cuban Sci. 2023, 4(1): 1–2
Lidice Cruz Rodriguez
Published on 18 Aug 2023 PDF (568K)
“In this work we give a short overview of the hydrodynamic formulation of quantum mechanics, together with some examples of its application to quantum dynamics simulations using the Quantum Trajectory Method.”
Cuban Sci. 2023, 4(1): 3–4
Gregorio Delgado
Published on 20 Sep 2023 PDF (571K)
“A summary of taxonomic and phylogenetic studies of saprobic microfungi collected in southern United States is presented. One novel genus and two species of asexual Ascomycota were described new to science from the southwestern states of Arizona and New Mexico.”
Cuban Sci. 2023, 4(1): 5–6
Antonio Mijail Perez, Dora Pilar Maul, Luis Alfredo Cendan
Published on 22 Sep 2023 PDF (206K)
“Our project was conducted in Amelia Earhart Park, in the city of Hialeah, Florida, with the purpose of calculating the total amount of Biomass and Carbon Stock produced by trees in selected areas of Amelia Earhart Park.”
Cuban Sci. 2023, 4(1): 9–10
Gregorio Delgado, Jose G. Maciá-Vicente
Published on 22 Oct 2023 PDF (283K)
“Extensive sampling of root endophytic fungi across Europe led to the discovery of two novel fungal genera, Endoradiciella and Extremopsis, and the description of six species new to science.”
Cuban Sci. 2023, 4(1): 11–12
Nana Cabo Bizet
Published on 18 Jan 2024 PDF (1.46M)
“A scale separation between the space-time’s and the internal dimensions’s degrees of freedom can be obtained by adjusting the parameters of the string geometry. We describe this scale hierarchy and the cosmological evolution of the scalar fields for type IIB string theory on the geometry of the mirror quintic.”
Cuban Sci. 2023, 4(1): 13–14
Nana Cabo Bizet
Published on 18 Jan 2024 PDF (244K)
“We study novel non-Abelian dualities between gauged linear sigma models, which constitute an ultraviolet description of string theory. These dualities can lead to new physical symmetries between different geometries.”

Cuban Sci. 2023, Vol. 4, Issue 2

Natural Sciences (9 reports)

Cuban Sci. 2023, 4(2): 1–2
Dario A. Leona, Joan Nieves, Roberto Herrero, Frank Quintela, Augusto Gonzalez
Published on 23 Mar 2024 PDF (213K)
“We present evolp, a repository with a set of tools for analyzing mutations and gene expression data. We discuss some examples of applications, already published elsewhere.”
Cuban Sci. 2023, 4(2): 3–4
Diana Alvear Terrero, Samantha López Pérez, Daryel Manreza Paret, Aurora Pérez Martínez, Gretel Quintero Angulo
Published on 23 Mar 2024 PDF (247K)
“When modeling the structure of compact stars, the presence of magnetic fields poses a number of questions about the micro and macrophysics treatment of the system. Here, we discuss a model based in the so-called γ-metric to describe anisotropic magnetized compact stars.”
Keywords: compact stars
Cuban Sci. 2023, 4(2): 5–6
Alejandro Cabo
Published on 23 Mar 2024 PDF (99K)
“A personal view of the history of the Theoretical Physics Department (DFT) at ICIMAF (former ININTEF) is presented. The current Department was originally called Theoretical Physics Group (GFT).”
Cuban Sci. 2023, 4(2): 7–8
Gretel Quintero Angulo, Diana Alvear Terrero
Published on 23 Mar 2024 PDF (1.29M)
“We briefly review the history and achievements of the Department of Theoretical Physics (DFT) of the ICIMAF since its foundation in 1976. The data and opinions of former and current members of the DFT were taken from a series of interviews made to the participants of the scientific conference FT-45, held virtually in March 2021, to celebrate the 45th anniversary of the DFT.”
Cuban Sci. 2023, 4(2): 9–12
Samantha López Péreza, Daryel Manreza Paret, Gretel Quintero Angulo, Aurora Pérez Martínez, Diana Alvear Terrero
Published on 23 Mar 2024 PDF (377K)
“In this work we study stable configurations of magnetized strange stars using an axially symmetric metric in spherical coordinates and calculate its observables (masses, radii and mass quadrupole moment).”
Cuban Sci. 2023, 4(2): 13–14
Zochil González Arenas
Published on 23 Mar 2024 PDF (207K)
“A time reversal transformation for a system of stochastic differential equations is defined. The stochastic integration is considered in the generalized Stratonovich prescription.”
Cuban Sci. 2023, 4(2): 15–16
Siannah Peñaranda
Published on 23 Mar 2024 PDF (408K)
“The experimental measurements on flavour physics, in tension with Standard Model predictions, exhibit large sources of Lepton Flavour Universality violation. An analysis of the effects of the global fits to the Wilson coefficients, assuming a model independent effective Hamiltonian approach, is summarized.”
Cuban Sci. 2023, 4(2): 17–18
L. C. Suarez-Gonzalez, G. Quintero Angulo, A. Pérez Martínez, H. Pérez Rojas
Published on 23 Mar 2024 PDF (281K)
“We study the thermodynamic properties of a relativistic magnetized neutral vector boson gas at any temperature. We compare the results with the low temperature (LT) and the non relativistic (NR) descriptions of this gas.”
Cuban Sci. 2023, 4(2): 19–21
D. S. Fontanella, A. Cabo, C. M. García
Published on 23 Mar 2024 PDF (272K)
“The main physical ideas about Dynamical Gravastars, are briefly presented in common with the main properties of their field configuration. Also, we estimate the place that these solutions should take within the current astrophysical ideas for describing the super-massive galaxy centers and stars.”
Keywords: Gravastars

Cuban Sci. 2022, Vol. 3, Issue 1

Natural Sciences (2 reports)

Cuban Sci. 2022, 3(1): 5–6
Rogelio Díaz-Méndez
Published on 4 Jul 2022 PDF (0.97M)
“Among the direct consequences of the verification of a crystal-to-glass transition in 2D interacting particles is that heat pulses can switch patterns, suggesting the design of bit-writing protocols for monodisperse systems.”
Cuban Sci. 2022, 3(1): 7–8
Marcelo Marcet-Palacios
Published on 21 Jul 2022 PDF (615K)
“Our efforts to improve a model of the HIV-1 virus structure led us to the development of software to validate hypothetical versions of the HIV-1 matrix shell. In this manuscript we reconstruct a full model of the HIV-1 envelop protein and predict its interaction with a previously published matrix shell structure. The evidence generated suggests a role of the HIV-1 matrix shell in viral entry.”

Cuban Sci. 2022, Vol. 3, Issue 2

Natural Sciences (3 reports)

Cuban Sci. 2022, 3(2): 3–4
Bryan Zaldívar
Published on 21 Jan 2023 PDF (0.97M)
“The dwarf satellite galaxies of the Milky Way are ideal targets to search for non-gravitational interactions of dark matter using gamma-ray data. A new data-driven method is proposed to bypass the currently limited knowledge of the physics behind standard astrophysical emissions.”
Cuban Sci. 2022, 3(2): 5–6
Yuniel Ernesto Martínez Péreza, René Collazo Carceller, Miguel Armando Autie Pérez, José Luis Valín-Rivera
Published on 21 Jan 2023 PDF (207K)
“The aim of this work was to analyse the values of thermo-physical and thermo-dependent mechanical properties and diagrams necessary at high temperatures for the simulation of a welding process of 2.25Cr-1Mo steels based on the compositions provided in the specialised literature.”
Keywords: Simulations
Cuban Sci. 2022, 3(2): 7–8
Sandy Sanchez
Published on 21 Jan 2023 PDF (651K)
“Perovskite hybrid semiconductor materials have an enormous potential for growth across the field with promising applications such as thin-film solar cells. Although device stability is the bottleneck of perovskite solar cell technology, recent advances show a promising way to implement future improvements.”

Cuban Sci. 2021, Vol. 2, Issue 2

Natural Sciences (4 reports)

Cuban Sci. 2021, 2(2): 1–2
Marilyn Bello, Gonzalo Nápoles, Koen Vanhoof, Rafael Bello
Published on 13 Sep 2021 PDF (167K)
“This work introduces a new neural network architecture that uses bidirectional associations-based pooling to extract high-level features and labels from multi-label data. Unlike the pooling approaches reported in the literature, our proposal does not require input data to have any topological properties as typically occurs with images and videos. The numerical results show that our bidirectional pooling helps reduce the number of problem features and labels while preserving the discriminatory power of the network.”
Cuban Sci. 2021, 2(2): 3–4
A. Quintana-Nedelcos
Published on 12 Oct 2021 PDF (363K)
“This work focuses on the collaborative behavior of strong ferromagnetic FeCr nanoparticles embedded in a AlNiCo weak magnetic matrix.”
Cuban Sci. 2021, 2(2): 5–6
Leonardo Concepción, Gonzalo Nápoles, Rafael Bello, Koen Vanhoof
Published on 12 Oct 2021 PDF (333K)
“We proposed definitions and theorems regarding Fuzzy Cognitive Maps (FCMs), which allow estimating bounds for the activation value of each neuron and analyzing the covering and proximity of feasible activation spaces. The main theoretical findings suggest that the state space of any FCM model equipped with transfer F-functions shrinks infinitely with no guarantee for the FCM to converge to a fixed point but to its limit state space. This result, in conjunction with the covering and proximity values of FCM-based models, helps to understand their poor performance when solving complex simulation problems.”
Cuban Sci. 2021, 2(2): 7–8
Gonzalo Nápoles, Agnieszka Jastrzebska, Carlos Mosquera, Koen Vanhoof, Władysław Homenda
Published on 5 Nov 2021 PDF (144K)
“We have proposed a hybrid Fuzzy Cognitive Map-based model that incorporates static expert knowledge and information automatically inferred from the data. The paper introduces a fast and deterministic algorithm to construct such a model and a post-optimization procedure to fine-tune the resulting architecture. Simulations showed the superiority of our proposal in problems devoted to modeling complex systems.”

Cuban Sci. 2020, Vol. 1, Issue 1

Natural Sciences (7 reports)

Cuban Sci. 2020, 1(1): 1–2
Sandy Sanchez
Published on 20 Apr 2020 PDF (288K)
“We describe FIRA, a new method to manufacture solar cells. Its main advantages are its quick implementation and the high-efficiency of the resulting devices.”
Cuban Sci. 2020, 1(1): 3–4
Rogelio Díaz-Méndez
Published on 20 Apr 2020 PDF (537K)
“The Event-Driven Monte Carlo algorithm is introduced. It applies to problems with discrete degrees of freedom accurately finding the temporal evolution at all time scales.”
Keywords: Monte Carlo
Cuban Sci. 2020, 1(1): 9–10
Ramon E. R. Gonzalez
Published on 26 Apr 2020 PDF (477K)
“We propose a time-based analogy between the thermodynamic behavior of a three-level energy system and the progression of HIV infection described by the evolution of the cell population.”
Cuban Sci. 2020, 1(1): 13–14
Anthuan Ferino-Péreza, Juan José Gamboa-Carballo, Ulises Jáuregui Haza
Published on 10 May 2020 PDF (797K)
“The molecular inclusion process of two organochlorine pesticides and its radiolabeled analogous with cyclodextrines is a perspective technology for the removal of these pollutants from water.”
Cuban Sci. 2020, 1(1): 19–20
Marcelo Marcet-Palacios
Published on 22 May 2020 PDF (942K)
“The structure of the HIV matrix shell has not been fully elucidated. In this article, I highlight contributions that led to a model composed of adjacent hexagons forming a sphere and mentioned studies that were subsequently impacted. A cross-disciplinary group of students in my lab tested this hypothesis and conclusively demonstrated that this model was incorrect. I provide a summary of our results with emphasis placed on contributions made by students.”
Cuban Sci. 2020, 1(1): 21–22
Kenia Melchor Rodrı́guez, Juan José Gamboa Carballo, Anthuan Ferino Pérez, Nady Passe-Coutrin, Sarra Gaspard, Ulises Jáuregui Haza
Published on 16 Jun 2020 PDF (368K)
“We use computational chemistry tools for describing chlordecone interactions with acidic surface groups onto activated carbons (AC), for understanding the adsorption process of pesticide on AC.”
Cuban Sci. 2020, 1(1): 27–28
Alexander Odriazola
Published on 30 Jun 2020 PDF (271K)
“We investigate yet another direct link between linear algebra and electronic structure theory by exploring the usefulness of the Gershgorin theorem in the estimation of the correlation energies of many-particle systems.”

Cuban Sci. 2020, Vol. 1, Issue 2

Natural Sciences (2 reports)

Cuban Sci. 2020, 1(2): 1–2
Drialys Cardenas-Morcoso
Published on 7 Oct 2020 PDF (332K)
“The meaning of negative IMPS transfer function values was experimentally demonstrated, providing a powerful opto-electronic method toward specific operational mechanisms insights in photoelectrochemical systems.”
Cuban Sci. 2020, 1(2): 3–4
Danny Martínez Pedrera
Published on 17 Oct 2020 PDF (258K)
“We briefly discuss SU(2)-structure 6-manifolds, their role in the compactification of the heterotic string and the resulting gauged supergravity at low energies.”