Omar Israel Gonzalez Peña

• Ph.D. in Chemical Engineering; Case Western Reserve University
• Senior Researcher at Hospital Infantil de México Federico Gómez

This study assessed the “creation of technological solutions for electronic devices” competencies evaluation when faculty–industry liaison is available. This experience at Tecnológico de Monterrey (TEC) was developed with challenge-based learning provided by the automotive electronics industry addressing subjects oriented toward some objectives of...

This paper reports the use of laser ablation for the fabrication of a microfluidic device with integrated electrodes on a printed circuit board (PCB-MEMS). The fabricated novel device has flame retardant (FR)-4 resin as substrate, copper (Cu) as active material and SU-8 polymer as structural material. The resolution, repeatability and simplicity ac...

Pharmaceuticals enhance our quality of life; consequently, their consumption is growing as a result of the need to treat ageing-related and chronic diseases and changes in the clinical practice. The market revenues also show an historic growth worldwide motivated by the increase on the drug demand. However, this positivism on the market is fogged b...

The representation of Spanish-speaking students in STEM identity literature, particularly in physics identity, is conspicuously minimal. This study addresses this gap with a two-pronged approach. First, a physics identity instrument was adapted for Spanish-speaking STEM students to promote inclusivity in educational research. Data from 334 Mexican...

La estadística desempeña un papel crucial en la investigación médica, especialmente en la oncología pediátrica, donde los retos incluyen la rareza y heterogeneidad de las enfermedades, y las limitaciones en el tamaño de las muestras y los diseños de estudio convencionales. Este documento destaca cómo la estadística proporciona las herramientas nece...

Objective The primary objective was to evaluate factors influencing the cost of a ‘hospital at home’ (HAH) for geriatric patients in a Northeastern Mexican hospital. Secondarily to evaluate the per capita global cost-effectiveness compared with traditional hospital care. Design This retrospective analysis examined the costs incurred by geriatric p...

The representation of Spanish-speaking students in STEM identity literature, particularly in physics identity, is conspicuously minimal. This study addresses this gap with a two-pronged approach. First, a physics identity instrument was adapted for Spanish-speaking STEM students to promote inclusivity in educational research. Data from 334 Mexican...

Because it has a wider band gap than CuInGaSe2 [CIGS], Cu(In, Ga)(S, Se)2 [CIGSS] offers significantly superior performance as a solar cell thin film than CuInGaSe2. According to earlier reports, manufacturing Cu(In, Ga)(S, Se)2 requires adding elements during the annealing process using a hydrogen sulfide partial pressure or from the vapor phase u...

Cu2(ZnSn)(S)4 (copper, zinc, tin, and sulfide (CZTS)) provides possible advantages over CuInGaSe2 for thin-film photovoltaic devices because it has a higher band gap. Preparing CZTS by electrodeposition because of its high productivity and lower processing costs, electroplating is appealing. Recently published studies reported that the electrodepos...

This research analyzed the outcomes of an inquiry-based learning (IBL) activity presented to electronics engineering students to help them develop their abilities, propose new experiments, and construct their own knowledge. The IBL activity was led by a carbon nanotubes-based sensor prototype presentation where 39 engineering students were introduc...

El trabajo en equipo no es una habilidad intrínseca en la evolución individual, de ahí que suela requerir condiciones específicas para su funcionalidad y efectividad en el ámbito educativo. De hecho, los elementos fundamentales para alcanzar objetivos grupales dependen en gran medida de la capacidad individual y su interacción estimulante dentro de...

Teamwork is not a common skill in the evolution of the individual and, in general, certain conditions must be met to achieve its functionality and effectiveness in the educational environment. Consequently, the basic elements to achieve group objectives depend to a great extent on the individual capacity and its stimulating interaction with the tea...

Introduction Hypothyroidism is conventionally treated with replacement therapy through levothyroxine (LT4). Despite the improvement in symptoms, cold intolerance persists in some patients. The present study aims to determine whether there is a difference in temperature perception and skin temperature between patients with primary controlled hypothy...

Abstract Background There are no validation studies on patient satisfaction surveys in Spanish that can evaluate a hospital pharmacy drive-thru service. Objective To develop and apply a pharmacy drive-thru satisfaction survey in Spanish during the COVID-19 pandemic with an analysis of the instrument validation. Methods This was a qualitative stud...

Due to its wider band-gap than CuInGaSe2 [CIGS], Cu(In,Ga)(S,Se)2 [CIGSS] offers significant superiority compared to CuInGaSe2 as solar cell thin film. According to earlier reports, the manufacturing of CIGSS requires the addition of elements during the annealing process using a hydrogen sulfide partial pressure or from the vapor phase using a leng...

Background: Breast cancer is the second leading cause of global female mortality. Diagnosing and treating breast cancer patients at early stages is relevant for providing successful treatment and increasing the patient's survival rate. The use of new analytical methods for massive data from biological samples, such as Machine Learning Algortithms (...

Copper indium gallium selenium (CIGS) films are attractive for photovoltaic applications due to their high optical absorption coefficient. The generation of CIGS films by electrodeposition is particularly appealing due to the relatively low capital cost and high throughput. Numerous publications address the electrodeposition of CIGS; however, very...

Purpose Currently, information on the psychometric properties of the Medical outcomes study-social support survey (MOS-SSS) for patients with chronic disease in primary health care, suggests problems in the dimensionality, specifically predominant unidimensionality in a multidimensional measure. The aim of this study was to determine the internal s...

The COVID-19 pandemic generated worldwide negative effects on college students’ stress levels and motivation to learn. This research focuses on the lack of development of a sense of belonging in engineering students due to online classes during the pandemic and possible differences experiencing online classes between students from different context...

Recent years have witnessed significant achievements and technological advances in citizen science (CS) projects; nevertheless, significant global challenges are present. Proof of this is in the joint efforts of international organizations to achieve the 2030 SDG agenda in a complex environment. Thus, UNESCO has recognized CS as being among the ini...

There are great economic benefits and qualities of life when a country invests in the development of professionals in STEM areas. Unfortunately, there is a gender gap, as women are lagging behind their peers, as well as minority groups such as Hispanics, who are grossly underrepresented in these careers. Therefore, it is a priority to generate asse...

Despite the plethora of studies reported during the last decade in relation to educational innovation in teaching and assessment of competencies, a consensus is seemingly lacking on a definition that establishes the scope and boundaries competency assessment. This research gap motivated a systematic review of the literature published on the topics...

Sensation seeking is a construct associated with risky behaviors over a wide age range, but validation studies in Mexico are lacking. The aim of this study was to investigate the validity of two versions of the Brief Sensation Seeking Scale (the BSSS-8 and BSSS-4) in young Mexican individuals. The sample consisted of 2884 students (age: M = 16.6, S...

Studies have reported that there is a gender disparity wherein women do not study equally to men in bachelor’s degrees in science, technology, engineering, and math (STEM) areas, although they lead the race of having a better terminal efficiency rate in higher education. This research explores engineering students’ math anxiety and math self-effica...

Cancer is the second cause of mortality worldwide. Early diagnosis of this multifactorial disease is challenging, especially in populations with limited access to healthcare services. A vast repertoire of cancer biomarkers has been studied to facilitate early diagnosis; particularly, the use of antibodies against these biomarkers has been of intere...

Trained professionals in science, technology, engineering, and mathematics (STEM) are needed for a robust, science-based economy that incorporates various technologies’ design, construction, and commercialization to address societal problems. However, keeping students interested in STEM subjects and achieving optimal performance is a challenging ta...

De acuerdo con la Organización Mundial de la Salud, el cáncer es la segunda causa de muerte a nivel mundial (Figura 1 y 2). Es una enfermedad en donde un grupo de células del cuerpo humano crecen de forma descontrolada y afectan las funciones del organismo. Según la Secretaría de Salud en México, se considera que el 50% de los casos de cáncer infan...

CMOS microelectronics design has evolved tremendously during the last two decades. The evolution of CMOS devices to short channel designs where the feature size is below 1000 nm brings a great deal of uncertainty in the way the microelectronics design cycle is completed. After the conceptual idea, developing a thinking model to understand the opera...

Worldwide, people's quality of health has been decreasing due to bad eating habits that have generated an increase in diseases such as diabetes, hypertension, overweight, as well as an increase in hours of the daily workday and stress. This situation can generate sudden illness and work accidents where the need to have knowledge in emergency first...

Copper indium gallium selenium (CIGS) films are attractive for photovoltaic applications due to their high optical absorption coefficient. The generation of CIGS films by electrodeposition is particularly appealing due to the relatively low capital cost and high throughput. Numerous publications address the electrodeposition of CIGS; however, very...

There are diverse teaching methodologies to promote both collaborative and individual work in undergraduate physics courses. However, few educational studies seek to understand how students learn and apply new knowledge through open-ended activities that require mathematical modeling and experimentation focused on environmental problems. Here, we p...

Learning outside the classroom (LOtC) activities are part of pedagogical methodologies that are currently applied in the development of student skills. The objective of this study is to determine the perceptions of faculty and undergraduate students concerning industrial visits and define the advantages and disadvantages of these activities. A surv...

There are diverse teaching methodologies to promote both collaborative and individual work in undergraduate physics courses. However, few educational studies seek to understand how students learn and apply new knowledge through open-ended activities that require mathematical modeling and experimentation focused on environmental problems. In this wo...

Cyclic voltammetry (CV) was used in this work to describe the electrochemical behavior of a dual-chamber microbial fuel cell (MFC). The system performance was evaluated under vacuum and non-pressurized conditions, different reaction times, two sweep potentials, 25 and 50 mVs⁻¹ and under different analyte solutions, such as distilled water and domes...

In the set of pedagogical resources, scholars are using several tools outside or inside of classrooms such as it is Learning Outside the Classroom (LOtC) methods; these resources can be used for the intention to inform, to teach, or to build attention and to enhance interests on students to learn. In this work, it is shown a study in which it used...

Under the main features required on portable devices in electrochemical instrumentation is to have a small size, low power consumption, economically affordable and precision in the measurements. This paper describes the development of a programmable Embedded Potentiostat System (EPS) capable of performing electrochemical sensing over system-on-a-ch...

Under the main features required on portable devices in electrochemical instrumentation is to have a small size, low power consumption, economically affordable, and precision in the measurements. This paper describes the development of a programmable Embedded Potentiostat System (EPS) capable of performing electrochemical sensing over system-on-a-c...

In this study, biodegradation performance and power generation in MFCs were improved. Domestic wastewater was biodegraded in a dual-chamber MFC system equipped with a DupontTM Nafion® 117 proton exchange membrane, graphite electrodes (8.0 cm × 2.5 cm × 0.2 cm) in both chambers and an external electric circuit with a 100 Ω resistor. Experiments were...

Metal electrodeposition is often associated with simultaneous hydrogen co-evolution. The presence of bubbles complicates the design and control of electrodeposition processes. This is particularly relevant to the electrodeposition from aqueous electrolytes of numerous metals with standard potentials that are negative to hydrogen. As shown in this s...

El propósito principal de este documento es dar a conocer aspectos básicos, los criterios y los procedimientos en el manejo seguro de los residuos peligrosos, fundamentales en el cumplimiento de la legislación que aplica. Está dirigido a los diferentes actores que son participantes en la generación de residuos peligros, en su almacenamiento, transp...

Copper Indium Gallium Selenium (CIGS) films are attractive for photovoltaic applications because of their high optical absorption coefficient. Generation of CIGS films by electrodeposition is particularly appealing due to the relatively low capital cost and the relatively high throughput 1-4. Numerous publications address the electrodeposition of C...

In this work, it is reported viscosity, density, sound velocity and electrochemical impedance spectroscopy (EIS) measurements of calf thymus DNA in aqueous solutions, in order to investigate the overlapping C* and entanglement concentrations C e . These critical concentrations demark the conditions at which start appearing interactions and entangle...

In this work, it is reported viscosity, density, sound velocity and electrochemical impedance spectroscopy (EIS) measurements of calf thymus DNA in aqueous solutions, in order to investigate the overlapping C* and entanglement concentrations Ce. These critical concentrations demark the conditions at which start appearing interactions and entangleme...

Citrates are frequently used as additives in the electrodeposition of metals such as manganese in order to improve deposit characteristics and process efficiency. Nevertheless, few studies have been reported on the mechanism of citrate adsorption. This paper presents the results of a study of citrate adsorption onto platinum from solutions of vario...

En nuestro tiempo es evidente apreciar una revolución tecnológica y social que ha propiciado acortar las distancias en la comunicación, por tanto la necesidad de presentar de forma oral un trabajo científico es inminentemente muy común. Sin embargo, con frecuencia es posible observar investigadores diestros en desarrollar investigación, y en parale...

En la actualidad, cualquier persona que decida ser investigador en las áreas de las ciencias básicas como lo es la Química, necesita desarrollar múltiples competencias tales como: presentar un tema en público, trabajar interdisciplinariamente en una línea de investigación, redactar un tema de estudio para cualquier propósito etc. No obstante, diver...

Thiocyanate (SCN-) is widely used in industrial and scientific areas; nevertheless, few studies have been made to understand the mechanism of adsorption and electrochemical oxidation of SCN-. This work shows the results of a study of the adsorption and oxidation of SCN- at different concentrations on a Pt electrode in a 0.1M HClO4 electrolyte solut...