Claudia Garzon-Castro - Academia.edu (original) (raw)

Papers by Claudia Garzon-Castro

Journal of Chemical Technology & Biotechnology, Apr 13, 2023

BackgroundMicroalgal cultures are evolving into a promising ecofriendly technology for a host of ... more BackgroundMicroalgal cultures are evolving into a promising ecofriendly technology for a host of applications. To be sustainable, culture conditions need to be optimized and then controlled. One way to develop robust controllers for a cultivation system is by using mathematical growth models to simulate microalga‐based production. In this scenario, engineering design tasks begin by selecting the critical variables of these models.ResultsA new methodology for determining the significance ranking of a model's input factors under steady‐state operation (parameters (e.g. biological, geometrical) and/or process variables) was designed. The sensitivity of biomass response to its inputs was investigated in four different photobioreactor growth models within a nominal operational region. The methodology ranks models’ input factors based on the one‐at‐a‐time Morris method of elementary effects and variance‐based Sobol's method. Such information provided by the presented procedure is valuable as it reveals which input parameters explain most of the variance in model predictions.ConclusionThe methodology allowed the identification of controlled variables and biological parameters to be targeted for enhanced calibration. Furthermore, the presented methodology showed that in continuous reactors the dilution rate is a critical variable of the process. Therefore, it should be controlled. Additionally, most surprisingly, it is observed that controlling the light intensity within the optimum point of operation is not necessarily a crucial task. However, although its manipulation is still important, the accurate calibration of the parameters of the model may represent a greater influence on the biomass response. © 2023 Society of Chemical Industry (SCI).

One of the most significant benefits of the Internet of Things (IoT) is its efficiency. Many comp... more One of the most significant benefits of the Internet of Things (IoT) is its efficiency. Many companies use this system to automate business and manufacturing processes, remotely monitor and control operations, optimize supply chains, and conserve resources. Smart devices agglomerate a huge amount of IoT data that needs to be analyzed in real-time. Most of the sensors are in remote areas or difficult for people to access, for this reason, it is necessary to analyze in detail the type of technology used as well as the installation site to optimize the use of energy. This work presents a real application of IoT in the monitoring of a building, in addition, an algorithm is used that optimizes the energy used, increasing the battery lifetime. In this way, it is possible to have an intelligent and energy-saving system. This work analyzes the main wireless technologies such as Zigbee, WiFi and LoRa in order to propose the ideal routing protocol depending on performance metrics in a building on a university campus.

F1000Research, Mar 27, 2023

The use of technological tools, in the food industry, has allowed a quick and reliable identifica... more The use of technological tools, in the food industry, has allowed a quick and reliable identification and measurement of the sensory characteristics of food matrices is of great importance, since they emulate the functioning of the five senses (smell, taste, sight, touch, and hearing). Therefore, industry and academia have been conducting research focused on developing and using these instruments. In this review, several of these technological tools are documented, such as the e-nose, e-tongue, artificial vision systems, and instruments that allow texture measurement (texture analyzer, electromyography, others). These allow us to carry out processes of analysis, review, and evaluation of food to determine essential characteristics such as quality, composition, maturity, authenticity, and origin. The determination of these characteristics allows the standardization of food matrices, achieving the improvement of existing foods and encouraging the development of new products that satisfy the sensory experiences of the consumer, driving growth in the food sector.

In this paper a complete kinematics analysis of the RV-3SB Mitsubishi robot is perform. An altern... more In this paper a complete kinematics analysis of the RV-3SB Mitsubishi robot is perform. An alternative methodology to address the kinematic problem based on the Screws theory is presented. Then, the design of a simulator to validate the methodology proposed, by comparing the values of the simulator with the real values of the robot is presented, MATLAB as a testing tool and programming language is used.

Journal of Chemical Technology & Biotechnology, May 3, 2019

BACKGROUND The quality of light, such as wavelength and the intensity affect the performance of t... more BACKGROUND The quality of light, such as wavelength and the intensity affect the performance of the algal growth and the lipids production. Moreover, these variables also affect the lipids profile. To study the interrelation among these variables, Acutodesmus obliquus (Scenedesmus obliquus UTEX393) a microalga, was cultivated using illumination by Light-Emitting-Diode Surface Mount Device extensions emitting red (»=620-750 nm), yellow (»=570-590 nm), green (»=495-570 nm) and violet (»=380-450 nm) light. Additionally, each culture was illuminated at different light intensities (I 1 =8.75, I 2 =14.22 and I 3 =19.69 W•m-2). Finally, all samples were analysed by GC-MS. RESULTS The results showed: 1) the biomass production is directly proportional to the light intensity, e.g. at I 3 =19.69 W•m-2 violet (36.80 mg/L), yellow (25.49 mg/L) and red (39.44 mg/L) showed the major production; 2) however, the lipids were produced in minor amount at major violet light intensity (3.64 mg/L at I 3 =19.69 W.m-2); 3) the major lipids production (20.56 mg/L) was obtained with red light at I 3 =19.69 W.m-2 and finally 4) A. obliquus, under the parameters stablished was good producer of lipids.

Biochemical Engineering Journal, Jul 1, 2017

(J. Cortés-Romero). Highlights  An algorithm to manage the light intensity to maximize microalga... more (J. Cortés-Romero). Highlights  An algorithm to manage the light intensity to maximize microalgae biomass is proposed  The simulations shows an optimal behavior in terms of a maximum production biomass  This algorithm have a good behavior against variation of parameters and disturbance  The proposed algorithm is simple and robust against in front of perturbations Abstract. This paper proposes a method to find an optimal decision curve to manage the incident light intensity (0) that is applied to microalgae cultivation to maximize biomass concentration (). Microalgae are characterized by the production of high value compounds of interest to industry; the challenge is to obtain the highest biomass concentration.

Tecno Lógicas, Aug 6, 2014

Programming by demonstration is a technique where, contrary to detailed programming, the robot le... more Programming by demonstration is a technique where, contrary to detailed programming, the robot learns from one or several demonstrations of the execution of the task by a human or another robot. A technique which allows a humanoid robot, take a tool to the head of a screw, following a similar trajectory than demonstrated trajectory by a human being, is presented. The technique also allows variations in location and orientation in the screw head. This is achieved thanks to the use of machine vision techniques and probabilistic models estimated from the demonstrated trajectories. Image processing consists of color space segmentation, and interest point's selection in the screw head to calculate its position and orientation. The required trajectory in the presence of variations is generated using parameterized Gaussian mixture models in the task. With the above, the new required trajectories are generated in accordance to the variations. The system operation is presented through the illustration of the new trajectories, and pictures of the robot following these trajectories. Despite some limitations of the robotic platform used, acceptable results were achieved.

DOAJ (DOAJ: Directory of Open Access Journals), Aug 1, 2014

<p>Programming by demonstration is a technique where, contrary to detailed programming, the... more <p>Programming by demonstration is a technique where, contrary to detailed programming, the robot learns from one or several demonstrations of the execution of the task by a human or another robot. A technique which allows a humanoid robot, take a tool to the head of a screw, following a similar trajectory than demonstrated trajectory by a human being, is presented. The technique also allows variations in location and orientation in the screw head. This is achieved thanks to the use of machine vision techniques and probabilistic models estimated from the demonstrated trajectories. Image processing consists of color space segmentation, and interest point's selection in the screw head to calculate its position and orientation. The required trajectory in the presence of variations is generated using parameterized Gaussian mixture models in the task. With the above, the new required trajectories are generated in accordance to the variations. The system operation is presented through the illustration of the new trajectories, and pictures of the robot following these trajectories. Despite some limitations of the robotic platform used, acceptable results were achieved.</p>

This paper introduces a computer-based system devoted to process the sound that is produced when ... more This paper introduces a computer-based system devoted to process the sound that is produced when a corn-based food product is masticated. The system allows a simple and high-quality sound acquisition eliminating any interference caused by noise and other environmental artifacts. Its user interface displays the collected data in both time and frequency domains. Using the Fast Fourier Transform (FFT), some of the main characteristics related to food texture can be determined. The proposed implementation intends to be a simple yet effective tool that could complement sensory analysis in the food industry by assisting in determining the crunchiness of corn-based snacks, which is often a desirable attribute by consumers.

Microalgae are microorganism used for the industrial production of high value compounds. These ca... more Microalgae are microorganism used for the industrial production of high value compounds. These can be cultivated in closed systems called photobioreactors. In PBR is possible to control the conditions of the culture, with the purpose of increasing the production of biomass or metabolites. The relation between the conditions of growth with the light intensity is essential for the increase of biomass. This paper describes the application of a Proportional-Integral-Derivative controller to control the light intensity within the broth in a batch culture of the Acutodesmus obliquus (Scenedesmus obliquus UTEX 393). The performance of the PID controller was tested with laboratory-level experiments using violet light. In the experiments, conventional lighting operation was compared with constant lighting inside the broth. The experimental results showed an increase in the percentage of lipid production compared to cultures where the intensity of light was not constant (conventional lighting).

Chemical engineering research & design, Oct 1, 2021

Abstract Microalgae biomass is an up-and-coming option for supplying clean and reliable bio-produ... more Abstract Microalgae biomass is an up-and-coming option for supplying clean and reliable bio-products and energy for future years. However, its industrial production is not yet accomplished due to its economic unfeasibility. To date, several strategies have been used to improve microalgae productivity. Nonetheless, in most of these strategies, the objective function is minimized by nested procedures that have shown limitations dealing with discontinuities, which is very common in microalgae models. This paper describes the application of simultaneous optimization procedures in GEKKO Python package through the exploration of optimal biomass productivity under continuous operation of the strains Dunaliella tertiolecta and Chlorella vulgaris. The results show the successful implementation with fast convergence times: 7.43 s to solve 10800 equations with 900 degrees of freedom in Chlorella vulgaris and 11.45 s to solve 6600 equations with 600 degrees of freedom in Dunaliella tertiolecta. Furthermore, in biological terms, simulations show that once an optimal pH > 8 level is reached in the Chlorella model, the sensitivity of other variables such as Iin decreases dramatically. Therefore, it is possible to achieve high productivity even without increasing the required light intensity. In addition, in Dunaliella case, the results also infer that larger biomass productivity requires larger input substrate concentration.

Revista teinnova, Nov 23, 2022

Resumen El siguiente articulo refleja los procesos y resultados del trabajo realizado para el con... more Resumen El siguiente articulo refleja los procesos y resultados del trabajo realizado para el control automático de un cultivo vertical de Pleurotus Ostreatus, más conocido como Orellana el cual es un hongo comestible. El documento presenta el estado del arte de la investigación y el proceso de diseño del sistema de adquisición de datos de temperatura y humedad del cultivo desarrollado.

This paper presents the design, implementation, and characterization of a miniature crab-like wal... more This paper presents the design, implementation, and characterization of a miniature crab-like walking robot. The first prototype developed is a four-legged servomotor actuated machine that exhibits compact dimensions, low mass, and is capable of overcoming obstacles and moving on irregular terrain and confined spaces. Its bio-inspired design ensures the compliance of its locomotion mechanism even in the presence of external disturbances. The mechanical design, the implementation of the prototype, and its electronic control approach are first discussed. Next, a kinematic analysis characterizing its motion is presented. The aim of this device is to serve as an educational supporting platform for understanding robot kinematics and legged locomotion.

Tecno Logicas, Jul 1, 2014

F1000Research

Revista Sennova: Revista del Sistema de Ciencia, Tecnología e Innovación, 2021

El siguiente articulo refleja los procesos y resultados del trabajo realizado desde el año 2020 p... more El siguiente articulo refleja los procesos y resultados del trabajo realizado desde el año 2020 para la automatización de un cultivo vertical de Pleurotus Ostreatus para el incremento de cuerpo fructíferos y su posterior análisis para determinar la producción de quitina. El documento presenta el estado del arte de la investigación y el proceso de diseño del sistema de adquisición de datos de temperatura y humedad del cultivo desarrollado.