David Quesada

Nova Southeastern University | NSU · College of Osteopathic Medicine

Background The novel SARS-CoV-2 has caused the coronavirus disease 2019 (COVID-19) pandemic. Currently, with insufficient worldwide vaccination rates, identifying treatment solutions to reduce the impact of the virus is urgently needed. Method An adaptive, multicentric, open-label, and randomized controlled phase I/II clinical trial entitled the “...

By using microwave-assisted chemical deposition (MA-CBD) technique, lead selenide (PbSe) thin films were successfully synthetized at 80 °C and different growth times (3, 4, and 5 min). The films were analyzed by means of X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and UV-Vis spectroscopy. Also, their electrical properties, such as condu...

Background: The novel SARS-Cov-2 has caused the COVID-19 pandemic. Currently, with insufficient worldwide vaccination rates, the identification of treatment solutions to reduce the impact of the virus is urgently needed. Method: An adaptive, multicentric, open-label, and randomized controlled phase I/II clinical trial entitled the “SENTAD-COVID Stu...

Dear colleagues worldwide, we are glad to invite you to MOL2NET-07, International Conference on Multidisciplinary Sciences, ISSN: 2624-5078, MDPI SciForum, Basel, Switzerland, 2021. MOL2NET is an international conference formed by an association of several inter-university tansatlantic workshops or sessions. These workshops are chaired by one North...

Welcome From Chairs Dear colleagues worldwide, we are glad to invite you to MOL2NET-05, International Conference on Multidisciplinary Sciences, ISSN: 2624-5078, MDPI SciForum, Basel, Switzerland, 2019. MOL2NET is a year-round conference series with multiple associated workshops worldwide running and open to submissions almost all the year, please r...

Combining complex networks analysis methods with machine learning (ML) algorithms have become a very useful strategy for the study of complex systems in applied sciences. Noteworthy, the structure and function of such systems can be studied and represented through the above-mentioned approaches, which range from small chemical compounds, proteins,...

USA-Europe Data Analysis Training School (USEDAT) is a Multi-center Trans-Atlantic initiative offering hands-on training focused in both Introduction to Experimental Data Recording (NMR, MS, IR, 2DGE, EEG, etc.) and/or posterior Computational Data Analysis (Machine Learning, Complex Networks, etc.). We made emphasis on applications in for Cheminfor...

PbS thin films with thickness between 100 and 150 nm were grown for the first time by microwave-assisted chemical bath deposition in a commercial automated system with deposition times not exceeding 5 min. X-ray diffraction analysis shows that the thin films have cubic rock salt type structure with good crystallinity. The grain size increased from...

Journal of Nanotechnology. SPECIAL ISSUES OPEN ACCESS . Nanoparticles for Environment, Engineering, and Nanomedicine

Conference: Proceedings of the conference MOL2NET International Conference on Multidisciplinary Sciences (4th edition), 2018 is part of a year-round worldwide conference series hosted by MDPI Sciforum, Basel, Switzerland. This conference series has had organized more than 20 associated workshop series in universities worldwide: USA, France, Portuga...

Resumen En esta comunicación se presenta una aproximación a la enseñanza de las nanociencias desde la perspectiva de la Facultad de Ciencias de la Universidad de Santo Tomas, cuya enseñanza es en artes liberales, y donde no hay establecida una licenciatura en Física. Así mismo, el programa curricular de otras licenciaturas no deja espacio a un curs...

Resumen Esta comunicación intenta promover una idea que ha ido creciendo en popularidad y reconocimiento dentro de la comunidad de ciencia de materiales, la informática de ciencia de materiales, como una opción de integración entre las nano-ciencias y las demandas del mercado en el manejo y análisis de datos, conocido en inglés como data analytics....

We are glad to invite all colleagues worldwide to participate on a new edition of this International Conference Series. The official title of this conference series is MOL2NET International Conference Series on Multidisciplinary Sciences. MOL2NET (the conference running title) is the acronym of the lemma of the conference: From Molecules to Network...

Proceedings of the conference MOL2NET International Conference on Multidisciplinary Sciences (3rd edition), 2017. Year-Round conference series hosted by MDPI Sciforum, Basel, Switzerland. These conferences have more than 10 associated workshop series in universities of USA, Spain, China, Chile, Brazil, etc. These workshop series run in person and/o...

Proceedings of MOL2NET International Conference on Multidisciplinary Sciences (2nd edition), 2016. Year-Round conferences series hosted by MDPI Sciforum, Basel, Switzerland with > 10 associated in person workshops in USA, Spain, China, Chile, Brazil, etc. Some of the workshops are SRI-08 St Thomas University (STU)- Miami Dade College (MDC), Miami,...

In this communication, the kinetics of the well-known Belousov-Zhabotinsky oscillating reaction is studied. The choice of this particular reaction came from its similitude with circadian rhythms and the molecular clocks involved in the human response to microgravity conditions and the presence of electromagnetic fields. In the present communication...

Agrometeorology is an interdisciplinary science aimed at finding and understanding the impact of changing weather conditions on plant's growth and their abilities to adapt to changing conditions. In this communication, the effect of outdoor temperature and humidity on plant's performance (Okinawa Spinach) is studied. To the extent of the period of...

Electrical grids are part of the network of connections maintaining a city alive nowadays. Most of these connections are wired in parallel in order to guarantee a sustainable flow of electricity plus being robust enough against failures. The Braess Paradox states that in a congested network, it may happen that adding a new path between destinations...

The Belousov-Zhabotinsky (BZ) reaction is a classical oscillatory reaction that is the subject of many studies. One of its applications is to model other oscillatory processes, such as circadian rhythm. More often than not, experiments done on people are impractical, thus requiring simulations or modeling to enlighten the world on the unknown. A st...

Photovoltaic technologies have been improving over the last years mainly due to advances in the area of nanotechnologies. Multi-junctions solar cells have reached the largest efficiencies of light conversion (around 40 %) under laboratory conditions due to the fact that junction materials might be tuned to work for wider solar bands than single jun...

Assessment of the impact of micrometeorological conditions on plants growth. J. Jean – Jacques, Richard Aponte, and David Quesada School of Science, Technology, and Engineering Management, St. Thomas University, Miami Gardens, FL 33054 Global climate changes and the acceleration of urbanization all over world constitute a serious problem for the h...

Mathematical Modeling of the Optical response of photovoltaic cells H. Morales¹ and D. Quesada² ¹ Miami Dade College, North Campus, Miami FL 33167 ² School of Science, Technology, and Engineering Management, St. Thomas University, Miami Gardens, FL With the perpetual depletion of fossil fuels, the rising of global temperatures as a result of CO2 e...

Braess Paradox in Electrical Networks – When more might mean less J. Rojas, A. Alonso and D. Quesada School of Science, Technology and Engineering Management, St. Thomas University, Miami Gardens FL 33054 Electrical grids are part of the network of connections maintaining a city alive nowadays. Many times we see a limited amount of lines and poles...

The Belousov-Zhabotinsky (BZ) reaction is a classical oscillatory reaction that is the subject of many studies. One of its applications is to model other oscillatory processes, such as circadian rhythm. More often than not, experiments done on people are impractical, thus requiring simulations or modeling to enlighten the world on the unknown. A st...

Modeling the oscillating Belousov – Zhabotinsky chemical reaction S. Centeno¹ and D. Quesada² ¹ Miami Dade College, North Campus, Miami FL ² School of Science, Technology, and Engineering Management, St. Thomas University, Miami Gardens, FL Chemical reactions play a fundamental role in many processes in nature and life. At the same time, some of t...

Effect of Brain network topologies on the synchronization of neuronal oscillations – Is this the gateway to the understanding of Central Nervous disorders? N. Astudillo, M. Garcia – Russo, and D. Quesada School of Science, Technology, and Engineering Management, St. Thomas University, Miami Gardens, FL 33054 The Brain Project is aimed at the under...

The seasonality of upper respiratory tract infections and their relationship to asthma Alejo¹ and D. Quesada² ¹ Miami Dade College, Wolfson Campus, Miami FL ² School of Science, Technology, and Engineering Management, St. Thomas University, Miami Gardens, FL The impact of weather conditions on both human health and the spread of diseases is a quest...

The response of humans to weather changes might be estimated through the Acclimatization Thermal Stress Index (ATSI) introduced by Grigorieva, et.al. Such index is the ratio of the difference of heat exchanges and the exchange based on the normal for the specified region expressed as a percentage. It includes convective as well as radiative exchang...

1. Motivations 2. Model implementation Acknowledgments

The impact of changing weather and air quality conditions on cardio-respiratory diseases is very important. Epidemiological as well as biometeorology studies have documented the existence of exacerbating factors for asthma, different from often cited allergens. Economic conditions, educational backgrounds, stress, diets, along with weather and air...

In South Florida, science teacher preparation is often weak as a shortage of science teachers often prompts administrators to assign teachers to science classes just to cover the classroom needs. This results is poor preparation of students for college science course work, which, in turn, causes the next generation of science teachers to be even we...

Asthma is a respiratory disorder resulting from a combined response of the immune system to environmental agents (allergens) and the expression of different genes (complex trait disorder). Asthma episodes are characterized at least by an increase in levels of Immunoglobulin E (IgE) and by the bronchial hyper-responsiveness (BHR). These two effects...

New families of superconducting materials share a common property; they all have a complex Fermi surface topology. The later is a result of the complex dynamics of carriers in these systems and the layered crystalline structure of most of them. In this paper, the electronic specific heat and resistivity have been computed in the normal and supercon...

In this contribution, the peak position of the spectral function in the ARPES spectrum has been calculated for several gap symmetries and electronic band structures. As a result, the d-wave, s + id and s* + id symmetries appear to be consistent with ARPES results. An additional comparison with previous calculations of the specific heat in normal an...

In this contribution, the peak position of the spectral function in the ARPES spectrum has been calculated for several gap symmetries and electronic band structures. As a result, the d wave, s + id and s* + id symmetries appear to be consistent with ARPES results. An additional comparison with previous calculations of the specific heat in normal an...

The differential conductance in NIN and SIN junctions is computed using the BCS tunneling hamiltonian. The role of the Van Hove singularity and its departure far from the Fermi energy is studied for s, sx2+y2 and dx2−y2 symmetries. A shift in the singularity far from the Fermi energy leads to a loss of the even parity of the density of electronic s...

The situation concerning the pairing symmetry of cuprates is still controversial. While earlier tunneling measurements pointed out to a dominant dx2−y2 wave symmetry, recent experiments seem to be consistent with a mixing like dx2−y2+exp⁡(iθ)α, where α = s and sx2+y2 instead. In this communication we address the calculation of the electronic specif...

An analysis of the different approaches used within the van Hove BCS model for the high temperature superconductors has been done. How far the employment of an asymptotic expression for the density of states underestimates the thermodynamic parameters, as for example, the critical temperature, the gap at zero temperature, and the known universal ra...

All the new layer perovskite superconductors seem to show a phenomenon of symmetry mixing with repect to the order parameter. An analysis of the different alternative of mixing and how far could them be presented is carried out. For the particular case of s+id symmetry of the gap, the temperature dependence of the specific heat ($C_{es}$) and the t...

An analysis of the electronic specific heat and the thermodynamic critical magnetic field as a function of the temperature is carried out in the cases of gap with isotropic-s, d and s+id symmetries. While the isotropic-s gap shows an exponential attenuation in the electronic superconducting specific heat for low temperatures (T

The central results of the BCS theory are the Universal Ratios (UR) which do not depend on any physical parameters whatsoever. This constitutes a well defined weak coupling limit for conventional superconductivity (CS). Furthermore, this formalism assumes that there is a bosonic mechanism acting between electrons, but no explicit hypothesis about t...

The central result of BCS theory are the Universal Ratios which do not depend on physical parameters of the superconductor under study. Several attempts have been made to introduce the van Hove Scenario within BCS theory but in none of them the Universal Ratios of conventional superconductivity appear to be a number independent of parameters. This...

It is shown the possibility of a chaotic approach to FQHE in semiclassical limit and a discussion is included on the promising aspects of this viewpoint