Journal articles: 'Procesní pec'

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Khetib, Yacine, Ahmad Alahmadi, Ali Alzaed, Ahamd Tahmasebi, Mohsen Sharifpur, and Goshtasp Cheraghian. "Effects of Different Wall Shapes on Thermal-Hydraulic Characteristics of Different Channels Filled with Water Based Graphite-SiO2 Hybrid Nanofluid." Processes 9, no. 7 (July 20, 2021): 1253. http://dx.doi.org/10.3390/pr9071253.

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In the current numerical study, various wall shape effects are investigated on the thermal-hydraulic characteristics of different channels filled with water-based graphite-SiO2 hybrid nanofluid. In this work, the performance evaluation criteria (PEC) index is employed as the target parameter to attain optimum geometry. Six different cases are studied in this research, and each case has different geometrical dimensions. The inlet temperature for the fluids in the channel is 300 K, over a range of different flow velocities. According to the obtained results, an increase in the volume fraction of nanoparticles results in higher PEC values. In addition, an increase in Reynolds number to Re = leads to an increase in the PEC index. The results clearly show that increasing the Reynolds number has two consequences: on the one hand, it increases the pressure drop penalty; on the other hand, it improves heat transfer. Therefore, the maximum value of the PEC index occurs at Re = 15,000.

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Medović, Aleksandar, and Aleksandar Mikić. "Archaeoentomological assessment of weevil (Coleoptera, Bruchidae) infestation level of pea (Pisum sativum) at the Late Bronze Age settlement Hissar." Ratarstvo i povrtarstvo 58, no. 1 (2021): 14–22. http://dx.doi.org/10.5937/ratpov58-31204.

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A find of 2572 charred seeds of pea (Pisum sativum L.) was detected at the Late Bronze Age tell settlement Hissar near Leskovac, in Serbia, belonging to the Brnjica cultural group, 14-10 cent. BC. Two types of pea seeds were observed: apparently healthy seeds and seeds damaged by the activity of a weevil (Coleoptera, Bruchidae). At least two-fifths of all finds have apparently been infested most probably by pea weevil (Bruchus pisorum L.), one of the most important pea pests worldwide, especially in medium-moist and dry climates, such as Southern Europe and Australia. A large amount of infested pea seeds indicates a developed pea production on small plots, strongly indicating that cultivating this ancient pulse crop must have been well-rooted in field conditions. Previous DNA analyses of charred pea placed the ancient Hissar pea at an intermediate position between extantly cultivated pea (P. sativum L. subsp. sativum var. sativum) and a wild, winter hardy, 'tall' pea (P. sativum subsp. elatius (Steven ex M. Bieb.) Asch. et Graebn.). Based on an assumption of its late harvest time and combined with pea weevil life cycle stage in charred seeds, it was possible to estimate the season during which the seeds were carbonized, namely, the second half of July or the first days of August at the latest. Older, final weevil instars were predominant before seed carbonization. The pea infestation rate at Hissar is one of the highest noted among pulses in the Old World and the highest among peas, so far.

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Hinostroza, Juan Enrique, Andrea Ibieta, and Christian Labbé. "Relación entre tipos de problemas de información en Internet, procesos y resultados." Pensamiento Educativo: Revista de Investigación Educacional Latinoamericana 56, no. 2 (December 2019): 1–19. http://dx.doi.org/10.7764/pel.56.2.2019.4.

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Alhalaili, Badriyah, Ruxandra Vidu, Howard Mao, Olfa Kamoun, and M. Saif Islam. "Photoelectrochemical (PEC) etching of Ga2O3." Ceramics International 47, no. 1 (January 2021): 479–86. http://dx.doi.org/10.1016/j.ceramint.2020.08.155.

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Aprile, Daniel, Samer Al-Banna, Arraventhan Maheswaran, Joshua Paquette, and Mohamad Ziad Saghir. "Storing Energy from External Power Supplies Using Phase Change Materials and Various Pipe Configurations." Processes 9, no. 7 (July 3, 2021): 1160. http://dx.doi.org/10.3390/pr9071160.

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Phase change materials are commonly used for energy storage. Heat transfer enhancement and heat storage are the two main goals in this paper. A cylindrical pipe covered with phase change material is investigated numerically. Ideally, a high temperature liquid flows through the pipe, resulting in heat transferred to the phase change material. To enhance the heat transfer, various configurations involving the addition of a twisted tape inside of the pipe and the use of helical shape pipes were investigated. A straight pipe with no twisted tape insert was also analyzed and used as a benchmark case. All the configurations had constant properties such as material selection, overall size, pipe diameter and inlet Reynold’s number, so the performance could be compared under similar conditions. All initial configurations were simulated and the heat transfer rate, Nusselt number, friction factor and performance evaluation criterion (PEC) of the designs were determined. It was found that the heat transfer rate and Nusselt number of all the various designs yielded higher results than the reference straight pipe configuration. Additionally, due to the added complexity in the flow caused by the insert, the friction factor of all the configurations was also higher. The helical pipe configuration was the only configuration that had a PEC higher than that of the reference straight pipe. This is because the negative impacts caused by the friction factor outweighed the gains in Nusselt number for the twisted tape designs. It was also hypothesized that lowering the inner diameter of the helical pipe would increase the PEC. Further simulations with modified inner diameters were done to test the hypothesis. The simulations confirmed the hypothesis, as the pipes with inner diameters 0.75 and 0.5 cm led to a 50% and 150% increase in the PEC respectively, when compared to an inner diameter of 1 cm. It was also determined that smaller inner diameters led to lower outlet temperatures meaning a higher percentage of the thermal energy from the fluid was transferred to the phase change material.

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Geiser, Saul. "Medición y evaluación para los procesos de admisión de la educación superior: Hallazgos desde California." Pensamiento Educativo: Revista de Investigación Educacional Latinoamericana 53, no. 1 (May 5, 2016): 1–18. http://dx.doi.org/10.7764/pel.53.1.2016.7.

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Suárez G., Alejando, Efraín Alfonso Rubio H, and Juan Valverde P. "Procesos de Colonización por Peces en Dos Tipos de Arrecifes Artificiales, una Alternativa Factible para Aumentar la Biomasa Pescable en Zonas Estuarinas del Pacifico de Colombia Contribución No. 30 del Cime (Centro De Investigaciones Marinas Y Estuarinas." Revista de Ciencias 7 (November 8, 2011): 63–72. http://dx.doi.org/10.25100/rc.v7i0.631.

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En febrero de 1991 el Programa de Cooperación Técnica para la Pesca (CEE/PEC/ALA 8721). INPA y la Universidad del Valle a través del CIME, coordinaron un proyecto con el objeto de aumentar la biomasa íctica pescable en una comunidad de pescadores artesanales en la Costa Pacífica de Colombia, para ello se inició la construcción de dos tipos de arrecifes artificiales, uno superficial construirlo con balsas flotantes y el otro de fondo.

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M. P. Rajakumar, M. P. Rajakumar, and Dr V. Shanthi Dr. V. Shanthi. "Markov Process Model Forecasting of Quarterly Accounting Earnings Per Share." Indian Journal of Applied Research 3, no. 6 (October 1, 2011): 99–103. http://dx.doi.org/10.15373/2249555x/june2013/33.

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Vinueza Martinez, Jorge, and Mirella Azucena Correa Peralta. "La Calidad en los Procesos Informáticos de las Universidades Ecuatorianas." Ciencia Unemi 7, no. 12 (June 29, 2015): 58. http://dx.doi.org/10.29076/issn.2528-7737vol7iss12.2014pp58-68p.

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En la actualidad las Instituciones de Educación Superior (IES) del Ecuador y otros países de AméricaLatina carecen, dentro de la gestión administrativa, de una metodología básica que promueva laformulación, medición, control y seguimiento estandarizado, a corto, mediano y largo plazo, de losPlanes Institucionales. Esto genera la necesidad de diseñar e implementar un Modelo de Gestión Estratégicay Operativa para la Universidad Estatal de Milagro, UNEMI, como parte del Sistema Integralde Planificación, ya que la evaluación estandarizada y permanente es un proceso intrínseco que debereflejar la obtención de resultados de calidad, basados en objetivos e iniciativas cuantificables, y obtenidosmediante técnicas de medición que cuantifiquen el logro de los objetivos planteados. Ademásse devela la falta de definición de procesos basados en TIC y sistemas de información que optimicenel seguimiento y control de los programas y proyectos. La evaluación y seguimiento en el direccionamientoestratégico son fundamentales para medir el logro de resultados; sin herramientas de apoyo deplanificación, como: POA [Plan Operativo Anual], PAT [Plan Anual de Tecnología], PAC [Plan Anual deContrataciones], PAI [Plan Anual de Inversión], difícilmente se cuantificaría de manera exacta el nivelde desempeño de esta institución.Palabras clave: Sistema Integral de Planificación, direccionamiento estratégico, gestión administrativa,sistemas de información y TIC.

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Karim, Kaykobad Md Rezaul, Huei Ruey Ong, Hamidah Abdullah, Abu Yousuf, Chin Kui Cheng, and Mohd Maksudur Rahman Khan. "Electrochemical Study of Copper Ferrite as a Catalyst for CO2 Photoelectrochemical Reduction." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 2 (June 11, 2018): 236. http://dx.doi.org/10.9767/bcrec.13.2.1317.236-244.

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In this work, p-type CuFe2O4 was synthesized by sol gel method. The prepared CuFe2O4 was used as photocathode catalyst for photoelectrochemical (PEC) CO2 reduction. The XRD, UV-Visible Spectroscopy (UV-Vis), and Mott-Schottky (MS) experiments were done to characterize the catalyst. Linear sweep voltammetry (LSV) was employed to evaluate the visible light (λ>400 nm) effect of this catalyst for CO2 reduction. The band gap energy of the catalyst was calculated from the UV-Vis and was found 1.30 eV. Flat band potential of the prepared CuFe2O4 was also calculated and found 0.27 V versus Ag/AgCl. Under light irradiation in the CO2-saturated NaHCO3 solution, a remarkable current development associated with CO2 reduction was found during LSV for the prepared electrode from onset potential -0.89 V with a peak current emerged at -1.01 V (vs Ag/AgCl) representing the occurrence of CO2 reduction reaction. In addition, the mechanism of PEC was proposed for the photocathode where the necessity of a bias potential in the range of 0.27 to ~ -1.0 V vs Ag/AgCl was identified which could effectively inhibit the electron-hole (e-/h+) recombination process leading to an enhancement of CO2 reduction reactions. Copyright © 2018 BCREC Group. All rights reservedReceived: 4th July 2017; Revised: 5th November 2017; Accepted: 15th November 2017; Available online: 11st June 2018; Published regularly: 1st August 2018How to Cite: Karim, K.M.R., Ong, H.R., Abdullah, H., Yousuf, A., Cheng, C.K., Khan, M.K.R. (2018). Electrochemical Study of Copper Ferrite as a Catalyst for CO2 Photoelectrochemical Reduction. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 236-244 (doi:10.9767/bcrec.13.2.1317.236-244)

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Smrčková, P., M. Saglamtas, T. Hofmanová, J. Koláček, D. Chena, and E. Šárka. "Effect of process parameters on slowly digestible and resistant starch content in extrudates." Czech Journal of Food Sciences 32, No. 5 (October 1, 2014): 503–8. http://dx.doi.org/10.17221/162/2014-cjfs.

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A laboratory single-screw Kompaktextruder KE 19/25 was used at speeds 120–140 rpm of the screw with either a 2 : 1 or 3 : 1 compression ratio; the head had a 3 or 4 mm die. The temperature of the head was set at 131–144°C. The applied raw materials were maize grits, and mixtures with wheat starch, pea flour or chemically modified starch. Input mixtures differed in water addition (50 or 100 g water/kg). The highest amount of resistant starch (3.1% per total starch) in extrudate was found for mixture of pea flour and maize grits (with addition of 100 g water/kg of dry mixture), the output(extrudate)/input(mixture) ratio of the resistant starch was 45.8%. The highest SDS content was obtained for the maize grits and addition of 100 g water/kg using a die with a 3 mm diameter and a screw with a 3 : 1 compression ratio; the temperature of the head was approximately 140°C. Transportation rates: screw 140 rpm, dosing 15 rpm.  

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Yañez-Urbina, Cristopher, Ignacio Figueroa Céspedes, Jorge Soto Cárcamo, and Bruna Sciolla Happke. "La voz en la mirada: Fotovoz como una metodología para explorar los procesos de inclusión-exclusión desde la perspectiva del estudiantado." Pensamiento Educativo: Revista de Investigación Educacional Latinoamericana 55, no. 2 (2018): 1–16. http://dx.doi.org/10.7764/pel.55.2.2018.4.

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Liu, Yuan, Changsheng Xie, Huayao Li, Hao Chen, Yichuan Liao, and Dawen Zeng. "Low bias photoelectrocatalytic (PEC) performance for organic vapour degradation using TiO2/WO3 nanocomposite." Applied Catalysis B: Environmental 102, no. 1-2 (February 2011): 157–62. http://dx.doi.org/10.1016/j.apcatb.2010.11.037.

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Viegas, Rui M. C., Margarida Campinas, Rosário Coelho, Helena Lucas, and Maria João Rosa. "Hybrid Process of Adsorption/Coagulation/Ceramic MF for Removing Pesticides in Drinking Water Treatment—Inline vs. Contact Tank PAC Dosing." Membranes 11, no. 2 (January 20, 2021): 72. http://dx.doi.org/10.3390/membranes11020072.

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Two pilot trials of powdered activated carbon (PAC)/(coagulation)/ceramic microfiltration were conducted to compare continuous 10–12 mg/L PAC inline dosing with 8–10 mg/L dosing to a 2 h-contact tank. Two low turbidity/low natural organic matter (NOM, total organic carbon <2 mg C/L) surface waters spiked with 7.2–10.3 µg/L total-pesticides were tested and the dosing options were compared towards operational performance, average removal of pesticides and NOM and costs. Removal differences between the two PAC dosing options depended on pesticides’ amenability to adsorption and NOM characteristics (254 nm absorbance, A254). Waters containing low A254-absorbing NOM and only pesticides amenable to adsorption showed very high removals (all pesticides ≥93%) and no significant differences between the two PAC dosing options. Waters containing higher A254-absorbing NOM and high loads of pesticides less amenable to adsorption (dimethoate, bentazone) required higher inline PAC dose. Those or more severe conditions may require PAC doses higher than tested to comply with the Drinking Water Directive limits for pesticides. Cost analysis showed PAC inline dosing is more cost-effective than PAC dosing to the contact tank when identical PAC dose is sufficient or when the doses are low, even if 50% higher for inline dosing, and the plant is small.

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Vatansever, Serap, Minwei Xu, Ana Magallanes-López, Bingcan Chen, and Clifford Hall. "Supercritical Carbon Dioxide + Ethanol Extraction to Improve Organoleptic Attributes of Pea Flour with Applications of Sensory Evaluation, HS-SPME-GC, and GC-Olfactory." Processes 9, no. 3 (March 9, 2021): 489. http://dx.doi.org/10.3390/pr9030489.

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Supercritical carbon dioxide + ethanol (SC-CO2+EtOH) extraction, was employed as a deflavoring method to improve the sensory properties of pea flours. Furthermore, the impacts of particle size along with extraction on volatile profile and sensory attributes of pea flours were investigated using multiple approaches. These included headspace solid-phase microextraction-gas chromatography (HS-SPME-GC), GC-olfactometry (GC-O), and quantitative descriptive analysis (QDA) using a trained sensory panel. Total volatile contents of non-deflavored and deflavored whole pea flour and its fractions were in the range of 7.1 ± 0.3 to 18.1 ± 1.0 µg/g and 0.4 ± 0.1 to 2.7 ± 0.4 µg/g, respectively. The GC-O system showed that the total volatile intensity was in the range of 14.5 to 22.0 and 0 to 3.5, for non-deflavored and deflavored pea flours, respectively. Volatile analyses indicated that 1-hexanol, 1-octanol, 1-nonanol, nonanal, and 2-alkyl methoxypyrazines were major off-aroma compounds. Most off-aroma compounds were not detected in deflavored pea flours. QDA revealed less pea intensity and bitterness of deflavored pea flours. The larger particle size of flours resulted in less off-aroma compounds based on the GC data but more bitterness based on QDA. The SC-CO2+EtOH extraction at optimum conditions and particle size modifications can be a potential technology to improve the organoleptic properties of pulse ingredients.

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Campinas, Margarida, Rui M. C. Viegas, Rosário Coelho, Helena Lucas, and Maria João Rosa. "Adsorption/Coagulation/Ceramic Microfiltration for Treating Challenging Waters for Drinking Water Production." Membranes 11, no. 2 (January 27, 2021): 91. http://dx.doi.org/10.3390/membranes11020091.

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Pressurized powdered activated carbon/coagulation/ceramic microfiltration (PAC/Alum/MF) was investigated at pilot scale for treating low turbidity and low natural organic matter (NOM) surface waters spiked with organic microcontaminants. A total of 11 trials with clarified or non-clarified waters spiked with pesticides, pharmaceutical compounds, or microcystins were conducted to assess the removal of microcontaminants, NOM (as 254 nm absorbance, A254, and dissolved organic carbon, DOC), trihalomethane formation potential (THMFP), aerobic endospores as protozoan (oo)cysts indicators, bacteriophages as viruses indicators, and regular drinking water quality parameters. PAC/(Alum)/MF achieved 75% to complete removal of total microcontaminants with 4–18 mg/L of a mesoporous PAC and 2 h contact time, with a reliable particle separation (turbidity < 0.03 NTU) and low aluminium residuals. Microcontaminants showed different amenabilities to PAC adsorption, depending on their charge, hydrophobicity (Log Kow), polar surface area and aromatic rings count. Compounds less amenable to adsorption showed higher vulnerability to NOM competition (higher A254 waters), greatly benefiting from DOC-normalized PAC dose increase. PAC/Alum/MF also attained 29–47% NOM median removal, decreasing THMFP by 26%. PAC complemented NOM removal by coagulation (+15–19%), though with no substantial improvement towards THMFP and membrane fouling. Furthermore, PAC/Alum/MF was a full barrier against aerobic endospores, and PAC dosing was crucial for ≥1.1-log reduction in bacteriophages.

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Tyrolová, Y., and A. Výborná. "The effects of wilting and biological and chemical additives on the fermentation process in field pea silage." Czech Journal of Animal Science 56, No. 10 (October 17, 2011): 427–32. http://dx.doi.org/10.17221/3235-cjas.

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The objectives of the study were to evaluate the effects of wilting and additives on the fermentation quality of field pea silage, and to determine the rumen degradability of organic matter of pea silage. The following additives were used: commercial bacterial inoculant (1 g/t) containing homofermentative lactic acid bacteria – Lactobacillus rhamnosus (NCIMB 30121) and Enterococcus faecium (NCIMB 30122) and chemical additive containing formic acid, propionic acid, ammonium formate and benzoic acid (4 l/t). Compared to the control and chemical additive, the addition of the inoculant to wilted silage increased the lactic acid content (P < 0.05) and lactic:acetic ratio (P < 0.001). Both bacterial and chemical additives decreased (P < 0.001) the pH value of wilted silage. Differences between the control and chemically treated unwilted silage were also significant (P < 0.01). The pH value of silage with chemical additive was lower compared to the control. Proteolysis determined in wilted silage was lower compared to unwilted silage. Rumen degradability of organic matter in wilted silage treated with the chemical additive was found to be higher (P < 0.05) than in control and inoculant treated silages.

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Moridon, Siti Nurul Falaein, Mohd Nur Ikhmal Salehmin, Khuzaimah Arifin, Lorna Jeffery Minggu, and Mohammad B. Kassim. "Synthesis of Cobalt Oxide on FTO by Hydrothermal Method for Photoelectrochemical Water Splitting Application." Applied Sciences 11, no. 7 (March 29, 2021): 3031. http://dx.doi.org/10.3390/app11073031.

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Cobalt oxide thin films were successfully grown directly on fluorine-doped tin oxide glass substrates through a simple, green, and low-cost hydrothermal method. An investigation into the physicochemical characteristics and photoelectrochemical (PEC) properties of the developed cobalt oxide thin film was comprehensively performed. At various annealing temperatures, different morphologies and crystal phases of cobalt oxide were observed. Microflowers (Co3O4) and microflowers with nanowire petals (Co3O4/CoO) were produced at 450 °C and 550 °C, respectively. Evaluation of the PEC performance of the samples in KOH (pH 13), Na2SO4 (pH 6.7), and H2SO4 (pH 1) revealed that the highest photocurrent −2.3 mA cm−2 generated at −0.5 V vs. reversible hydrogen electrode (RHE) was produced by Co3O4 (450 °C) in H2SO4 (pH 1). This photocurrent corresponded to an 8-fold enhancement compared with that achieved in neutral and basic electrolytes and was higher than the results reported by other studies. This promising photocurrent generation was due to the abundant source of protons, which was favorable for the hydrogen evolution reaction (HER) in H2SO4 (pH 1). The present study showed that Co3O4 is photoactive under acidic conditions, which is encouraging for HER compared with the mixed-phase Co3O4/CoO.

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Bacha, Aziz-Ur-Rahim, Hanyun Cheng, Jin Han, Iqra Nabi, Kejian Li, Tao Wang, Yang Yang, Saira Ajmal, Yangyang Liu, and Liwu Zhang. "Significantly accelerated PEC degradation of organic pollutant with addition of sulfite and mechanism study." Applied Catalysis B: Environmental 248 (July 2019): 441–49. http://dx.doi.org/10.1016/j.apcatb.2019.02.049.

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Korpershoek, Hanke. "Estudio de confiabilidad y validez de la Escala de Manejo de Compromisos Identitarios de Utrecht, adaptada para medir procesos de formación de identidad de estudiantes en su universidad." Pensamiento Educativo: Revista de Investigación Educacional Latinoamericana 52, no. 2 (November 10, 2015): 79–97. http://dx.doi.org/10.7764/pel.52.2.2015.5.

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Huang, Shengyi, and Chenju Liang. "Evaluation of the Engineering Properties of Powdered Activated Carbon Amendments in Porous Asphalt Pavement." Processes 9, no. 4 (March 26, 2021): 582. http://dx.doi.org/10.3390/pr9040582.

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Porous asphalt pavement (PAP) with a high drainage capacity was modified with powdered activated carbon (PAC) addition to produce permeable reactive pavement (PRP), which may exhibit the potential to reduce environmental non-point source (NPS) pollution. The experimental design mixtures used to produce and test the PRP incorporated with PAC (named PRP-PACs) were conducted as follows: first, the PACs were initially tested to determine their feasibility as an additive in PAP; second, different amounts of PAC were added during the preparation of PAP to produce PRP-PAC, and the unregulated and regulated physical characteristics for the mechanical performance of PRP-PACs were examined to ensure that they meet the regulatory specifications. Third, the aqueous contaminants, namely benzene, toluene, ethyl-benzene, and xylene (BTEX), column adsorption tests were preliminarily conducted to demonstrate their adsorption capacities compared to traditional PAP. The compositions of 0.8% and 1.5% PAC (by wt.) (PRP-PAC08 and PRP-PAC15) met all the regulated specifications. As compared to PAP, PRP-PAC08 exhibited higher BTEX adsorption capacities than PAP, which were 47%, 49%, 29% and 2%. PRP-PAC08 showed both superior physical properties and adsorption performance than PAP and may be recommended as an engineering application that reduces the potential for NPS contamination of air, soil, groundwater, and surface water.

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Navas Montes, Yoaniker, Iliana Real Poveda, Silvia Pacheco Mendoza, and Amalin Ladaysé Mayorga Albán. "Los Procesos de Enseñanza y Aprendizaje del Idioma Inglés a través de los Entornos Virtuales de Aprendizaje / The processes of teaching and learning English through a Virtual Learning Environment." Ciencia Unemi 8, no. 13 (June 11, 2015): 47. http://dx.doi.org/10.29076/issn.2528-7737vol8iss13.2015pp47-55p.

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Los Entornos Virtuales de Aprendizaje (EVA) emergen como alternativas en los Procesos de Enseñanza y Aprendizaje (PEA) permitiendo la transformación de la información evolucionando hacia nuevos aprendizajes, lo cual incide directamente en los roles de docentes, estudiantes, institución y por supuesto, en todo el contexto que lo rodea. La Universidad Estatal de Milagro (UNEMI) ha incorporado aulas virtuales como estrategia de enseñanza basada en los EVA en las distintas carreras que ofrece a través de sus cinco facultades. Ante ello los investigadores se plantean como objetivo de la investigación registrar los procesos de enseñanza y aprendizaje que se han desarrollado a través del EVA institucional de la UNEMI en los módulos de Inglés, describir las relaciones que se establecen entre los componentes de dicho proceso, y comprobar los efectos, relaciones y contextos presentes en los procesos de enseñanza y aprendizaje a través de los EVA en los módulos de Inglés. Los resultados obtenidos consistieron en definir a través de los EVA a) los fundamentos teóricos metodológicos que permiten el perfeccionamiento de los PEA; b) diagnóstico de los PEA en los módulos de Inglés; y c) validación de una estrategia para el perfeccionamiento de los PEA a través de un EVA.Palabras Clave: procesos de enseñanza y aprendizaje, estrategia didáctica, entornos virtuales de aprendizajes. The Virtual Learning Environments (VLE) emerge as an alternative in the Teaching and Learning Processes (TLP) allowing the transformation of information evolving into new learning, which directly affects the roles of teachers, students, institution, and of course, the entire surrounding context. In this regard, the State University of Milagro (UNEMI) has built virtual classrooms as a teaching strategy based on Virtual Learning Environments (VLE) in the various careers offered through its five faculties. In response, researchers set as the aim of this research a) record the teaching and learning processes that have been developed through the institutional VLE in UNEMI English modules; b) describe the relationships that exist between the components of the teaching and learning processes when performed through the VLE in the English modules; c) provide knowledge about the teaching and learning processes through VLE; d) test the effects, relationships and contexts present in the teaching and learning processes through the VLE in the English modules. The obtained results consisted of defining through VLE a) methodological theoretical bases for improving the TLP; b) diagnosing the TLP in UNEMI English modules; and c) the validation of a strategy for improving the TLP through a VLE.

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Zhang, Yiqin, Ruijia Hu, Michael Tilley, Kaliramesh Siliveru, and Yonghui Li. "Effect of Pulse Type and Substitution Level on Dough Rheology and Bread Quality of Whole Wheat-Based Composite Flours." Processes 9, no. 9 (September 21, 2021): 1687. http://dx.doi.org/10.3390/pr9091687.

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Pulse flours are commonly added to food products to improve the functional properties, nutritional profiles, product quality and health benefits. This study aimed at assessing the effects of the partial replacement (0–25%) of whole wheat flour with diversified whole pulse flours (yellow pea, green pea, red lentil, and chickpea) on dough properties and bread quality. The pulse flours had higher protein contents and ash, but lower moisture content and larger average particle size, compared to whole wheat flour. Increasing the substitution level of pulse flours decreased dough viscosity, stability, development time and bread volume, and accelerated bread retrogradation. The incorporation of 5% yellow pea flour led to a similar bread quality as that with only whole wheat flour. Among all the tested pulse flours, the composite flour containing yellow pea flour or chickpea flour had overall better potential for bread making by providing good dough handling properties and product quality. This study will benefit the development of more nutritious food products by combining cereal and pulse ingredients.

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Ibáñez, Rosa. "Los procesos de evaluación y toma de decisiones en el desarrollo y aprendizaje de los párvulos en jardines infantiles de la Junta Nacional de Jardines Infantiles de la Región Metropolitana, Chile." Pensamiento Educativo: Revista de Investigación Educacional Latinoamericana 57, no. 1 (January 2020): 1–20. http://dx.doi.org/10.7764/pel.57.1.2020.3.

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Wang, Jian, Chuang Xue, Wenqing Yao, Jun Liu, Xingxing Gao, Ruilong Zong, Zhuang Yang, Wenjie Jin, and Dongping Tao. "MOF-derived hollow TiO2@C/FeTiO3 nanoparticles as photoanodes with enhanced full spectrum light PEC activities." Applied Catalysis B: Environmental 250 (August 2019): 369–81. http://dx.doi.org/10.1016/j.apcatb.2019.03.002.

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Chen, Dong, Zhifeng Liu, and Shaoce Zhang. "Enhanced PEC performance of hematite photoanode coupled with bimetallic oxyhydroxide NiFeOOH through a simple electroless method." Applied Catalysis B: Environmental 265 (May 2020): 118580. http://dx.doi.org/10.1016/j.apcatb.2019.118580.

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SANTOS, R. O. B., P. H. C. PRADO, L. V. M. OLIVEIRA, and R. P. GAMA. "ANÁLISE METALOGRÁFICA DA FORMAÇÃO DE CAVACO DO AÇO SAE 1020 EM UM PROCESSO DE TORNEAMENTO POR COMANDO NUMÉRICO COMPUTADORIZADO." Revista SODEBRAS 15, no. 175 (July 2020): 53–59. http://dx.doi.org/10.29367/issn.1809-3957.15.2020.175.53.

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Shyamal, Sanjib, Arjun Maity, Ashis Kumar Satpati, and Chinmoy Bhattacharya. "Amplification of PEC hydrogen production through synergistic modification of Cu2O using cadmium as buffer layer and dopant." Applied Catalysis B: Environmental 246 (June 2019): 111–19. http://dx.doi.org/10.1016/j.apcatb.2019.01.017.

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Rokosz, Krzysztof, and Tadeusz Hryniewicz. "Characteristics of porous biocompatible coatings obtained on Niobium and Titanium-Niobium-Zirconium (TNZ) alloy by Plasma Electrolytic Oxidation." Mechanik, no. 12 (December 2015): 978/15–978/18. http://dx.doi.org/10.17814/mechanik.2015.12.530.

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Miere (Groza), Florina, Simona Ioana Vicas, Adrian Vasile Timar, Mariana Ganea, Mihaela Zdrinca, Simona Cavalu, Luminita Fritea, et al. "Preparation and Characterization of Two Different Liposomal Formulations with Bioactive Natural Extract for Multiple Applications." Processes 9, no. 3 (February 27, 2021): 432. http://dx.doi.org/10.3390/pr9030432.

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Liposomes continue to attract great interest due to their increased bioavailability in the body and because the substances encapsulated are protected while maintaining their effectiveness. The aim of this study is to obtain “giant” liposomes by lipid film hydration using a preparation formula with two different phospholipids, phosphatidylcholine (PC) and phosphatidylserine (PS). Firstly, the macro- and microscopic characterization, total phenols content and antioxidant capacity of the plant Stellaria media (L.) Vill. were assessed. Then, Stellaria media (L.) Vill. extract was encapsulated in both formulations (PCE and PSE) and the liposomes were characterized according to their morphology, size distribution and Zeta potential using optical microscopy and dynamic light scattering. The encapsulation efficiency (EE%) was determined using the Folin–Ciocalteu method and the values of both formulations were compared. PC and PCE liposomes with a diameter between 712 and 1000 nm and PS and PSE liposomes with a diameter between 58 and 1000 nm were obtained. The values EE% of Stellaria media (L.) Vill. extract for PCE and PSE were 92.09% and 84.25%, respectively.

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Zambrano Mero, Ramón Antonio, Grether Lucía Real Pérez, José Raúl Quimis Reyes, and Argelio Antonio Hidalgo Avila. "Application del enfoque y control de procesos en la reducción de la mortalidad de nauplios y postlarvas de camarón en un laboratorio de producción." ECA Sinergia 10, no. 2 (May 15, 2019): 129. http://dx.doi.org/10.33936/eca_sinergia.v10i2.1587.

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Las actividades realizadas en los laboratorios de producción de nauplios y poslarvas son el comienzo de la producción de camarón, donde el control de procesos es esencial para los resultados productivos deseados. La investigación se realizó en un laboratorio de producción la parroquia Canoa, provincia de Manabí, con el objetivo de establecer el control de procesos para incrementar los resultados productivos. Se aplica el método: Análisis de Peligros y Puntos Críticos de Control (APPCC). Los resultados obtenidos demuestran que existen factores que no han sido controlados: la temperatura del agua, la energía eléctrica, la presencia de hongos, bacterias, mohos que son PCC en el proceso; su control puede incrementar la supervivencia en un 20 % de la situación actual. El estudio económico en la propuesta realizada arroja un beneficio/costo de 1.97, una tasa de retorno de la inversión de menos de un año, considerándose aceptable el proyecto. Palabras clave: Método APPCC, riesgo, producción, productividad, camarón ABSTRACT The activities carried out in the production laboratories of nauplii and postlarvae are the beginning of the production of shrimp, where the control of processes is essential for the desired productive results. The investigation was carried out in a production laboratory in the Canoa parish, province of Manabí, with the objective of establishing process control to increase the productive results. The method is applied: Hazard Analysis and Critical Control Points (HACCP). The results obtained show that there are factors that have not been controlled: the temperature of the water, the electrical energy, the presence of fungi, bacteria, molds that are PCC in the process; its control can increase survival by 20% of the current situation. The economic study in the proposal produced a benefit / cost of 1.97, a rate of return on investment of less than one year, considering the project acceptable. Key words: HACCP method, risk, production, productivity, shrimp

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García-Segovia, Purificación, Marta Igual, and Javier Martínez-Monzó. "Beetroot Microencapsulation with Pea Protein Using Spray Drying: Physicochemical, Structural and Functional Properties." Applied Sciences 11, no. 14 (July 20, 2021): 6658. http://dx.doi.org/10.3390/app11146658.

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Beetroot is a root vegetable with carotenoids, phenols, vitamins, minerals, and water-soluble betalain pigments such as betacyanins (red-violet color) and betaxanthins (yellow-orange color), which have many nutritional and health benefits. Its use in the food industry is mainly as a powdered natural dye. This study aims to investigate the effect of adding pea protein to beetroot juice as an encapsulating agent, and the spray-dried temperature on the physicochemical, structural, and functional properties of the powder. The spray drying was conducted at 125 and 150 °C with 3.5% and 7% pea protein used in the mixtures with the beetroot juice. The water content, bulk density, porosity, hygroscopicity, water solubility, water absorption index, color, and microstructure of the obtained powder were determined. In addition, betacyanin, total phenols, antioxidant capacity, and powder encapsulate efficiency were analyzed. Using pea protein in the spray drying of beetroot juice had shown high yields of spray drying and good characteristics of the powdered product. Beetroot powder with 7% of pea protein was more porous and luminous, and less hygroscopic than beetroot powder with 3.5% of pea protein. However, the use of 7% of pea protein increased the amount of water immobilized by the samples and reduced the soluble solids present in the product compared to beetroot powder with 3.5% of pea protein. The use of 7% of pea protein protected beetroot bioactive compound higher than the use of 3.5%. Higher spray-drying temperature (150 °C) significantly decreased phenols content and antioxidant capacity of the beetroot powders (p < 0.05). Results showed using 7% pea protein mixed with beetroot juice and a 125 °C spray-drying temperature gave the most content of the studied bioactive compounds and antioxidant capacity. Moreover, the proposal gives more stable powders from a functionality viewpoint because it showed the higher encapsulate efficiency.

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Li, Wenhao, Xinlong Xiao, Shenwang Guo, Shaohui Ouyang, Qingui Luo, Jianmei Zheng, and Guoquan Zhang. "Proximate Composition of Triangular Pea, White Pea, Spotted Colored Pea, and Small White Kidney Bean and Their Starch Properties." Food and Bioprocess Technology 7, no. 4 (May 26, 2013): 1078–87. http://dx.doi.org/10.1007/s11947-013-1128-2.

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Gagić-Serdar, Renata, Radovan Nevenić, Svetlana Bilibajkić, Tomislav Stefanović, Zoran Poduška, Ilija Đorđević, and Goran Češljar. "The most invasive five woody plants control risks assessment: Strategic precondition for sustainable governance of natural resources in Serbia." Sustainable Forestry: Collection, no. 65-66 (2012): 149–59. http://dx.doi.org/10.5937/sustfor1265149g.

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Risks assessmentand management can play a key role in the reduction of damage caused by different types of forest pests, diseases and weeds in sustainable forestry practice development. Significant diversity of serious threats to forest ecosystems condition demands special governance instruments in a goal of increasing productivity while an environmental contamination and health hazard needs to be reduced to a minimum. Sustainable forest management can be better achieved through the preferment of appropriate assessment tools (with proper risk evaluation model developing and adapting it). During testing the increasing desire to apply the "precautionary principle" in the face of scientific uncertainty had been recognized. There's luck of scientific knowledge; studies are ongoing intensive but with decade or less delay of our country/ forest practice/ introduced plant influence research object existing results or their control usage background. Potentially serious consequences prejudgment leads to the driving force of a multidisciplinary approach in research process, with objective and invaluable field experience at the first place and guidance of it.

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Bai, Jing, Yanbiao Liu, Jinhua Li, Baoxue Zhou, Qing Zheng, and Weimin Cai. "A novel thin-layer photoelectrocatalytic (PEC) reactor with double-faced titania nanotube arrays electrode for effective degradation of tetracycline." Applied Catalysis B: Environmental 98, no. 3-4 (August 1, 2010): 154–60. http://dx.doi.org/10.1016/j.apcatb.2010.05.024.

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Diamantis, Vasileios. "Performance of a Micro-Scale Membrane Reactor for Greywater Treatment at Household Level." Membranes 11, no. 1 (January 17, 2021): 63. http://dx.doi.org/10.3390/membranes11010063.

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An aerated membrane reactor (25 L working volume) equipped with 1.5 m2 hollow-fiber module was designed and operated using synthetic greywater for household water reuse. Activated sludge (MBR), activated carbon (PAC), zeolite (ZEO) and iron hydroxide (GEH) were added in separate experiments to optimize membrane hydraulic performance and removal efficiency of organics. The use of additives improved permeate quality (in terms of Chemical Oxygen Demand—COD) compared to the direct membrane filtration mode of operation. GEH and MBR were efficient for phosphorus removal, which was not the case for PAC and ZEO. No significant improvement of membrane flux was recorded when PAC, ZEO or GEH were added inside the membrane tank. The MBR system displayed optimum performance during medium-term operation, with COD removal efficiency 85% and permeate flux between 40 and 25 L m−2 h−1. The capital costs of the proposed technology were around 300 € and the operational costs below 80 € yr−1, rendering the process feasible at household level. Greywater treatment systems for household applications are still on their infancy; however, this trend is expected to change due public perception towards circular economy, water conservation and reuse.

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Yildirim, Kenan, Suna Cetin, and Yusuf Ulcay. "A New Regression Based Model for Estimation of the Process Parameters Affect for Texturing of Polyethylene Terephthalate (PET) Yarn." International Journal of Materials, Mechanics and Manufacturing 3, no. 3 (2015): 174–78. http://dx.doi.org/10.7763/ijmmm.2015.v3.190.

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BLIM, ANNA, and LESZEK JARECKI. "Effects of zone heating on pet fibers structures and dynamics of melt spinning process. Part II. Mathematical model." Polimery 52, no. 09 (September 2007): 686–700. http://dx.doi.org/10.14314/polimery.2007.686.

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Rivera García, Christian, and Elizabeth De Mora Litardo. "El apoyo de las Tics en los procesos pedagógicos de los colegios de la ciudad de Ventanas-Ecuador." Ciencia Digital 3, no. 4 (October 4, 2019): 101–21. http://dx.doi.org/10.33262/cienciadigital.v3i4.956.

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Las herramientas tecnologías de información y comunicación, amplían las posibilidades de aprendizaje en el ser humano digital, parecería una contradicción cuando decimos ser humano digital, pero la influencia de los recursos tecnológicos educativos sobre profesores y estudiantes del nivel de educación básica y bachillerato es cuestionable por la infinita información que se puede recabar y como se utiliza. El complejo entramado de la superestructura digital, minimiza el comportamiento académico del proceso enseñanza-aprendizaje se vuelve aprovechamiento tendencial programático del sistema de enseñanza nacional en algunos puntos geográficos de la región litoral, la influencia de las tecnologías en el PEA de los colegios de la ciudad de Ventanas, provincia de Los Ríos, es el objetivo principal de esta investigación, los procesos formativos se fragmentan por el limitado fluido de energía eléctrica que imperfeccionan el uso de la infraestructura para los equipos con tecnología de punta, problemas que retrasan la labor del docente estas circunstancias motivan a los docentes a crear estrategias complementarias para incluir en sus espacios docentes planes de aprovechamiento tecnológico, para minimizar las necesidades digitales en los alumnos, proyecto que mejoró sin que non el acceso al conocimiento horizontal de niños, niñas y adolescentes ecuatorianos. Las posibilidades digitales se perfeccionan con la automatización en el uso de los equipos y se aprovecha en el descubrimiento de nuevas formas de innovar, vinculando las necesidades de los grupos de atención prioritaria a los nuevos contextos globalizados de solución problemática inter e intra grupal poblacional, aumentando las posibilidades del desarrollo cognitivo, cognoscitivo y metacognitivo de las instituciones de educación media en esta zona del país. Las Tic apoyan el flujo rápido de la información en su actualización, planeación, organización y desafío metodológico investigativo en el desempeño del profesor y el alumno acortando los procesos científicos: inductivos, deductivos, analíticos, sintéticos, entre otros, que requiere la ciencia para su despegue global.

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BLIM, ANNA, EWA OLDAK, ANDRZEJ WASIAK, and LESZEK JARECKI. "Effects of zone heating on pet fibers structures and dynamics of melt spinning process. Part I. Crystallinity and molecular orientation." Polimery 50, no. 01 (January 2005): 48–59. http://dx.doi.org/10.14314/polimery.2005.048.

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Lin, Wenqian, Peijie Zhang, and Jianzhong Lin. "Flow and Heat Transfer Property of Oldroyd-B-Fluid-Based Nanofluids Containing Cylindrical Particles in a Pipe." Processes 9, no. 4 (April 8, 2021): 647. http://dx.doi.org/10.3390/pr9040647.

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Flow and heat transfer property of Oldroyd-B-fluid-based nanofluids containing cylindrical particles are studied in a pipe with circular cross-section in the range of Reynolds number (Re) from 100 to 2000, Weissenberg number (We) from 0.1 to 2, particle aspect ratio (β) from 2 to 16 and particle volume concentration (Φ) from 0.1% to 2.5%. The motion equation of Oldroyd-B fluid with particles, the equation for probability density function of particle orientation and convection-diffusion equation for particles are solved numerically. The numerical method used in the simulation is validated by comparing with the available results. The effects of Re, We, β and Φ on the friction factor (f), Nusselt number (Nu) and ratio of energy performance evaluation criterion (PECt/PECf) for Oldroyd-B-fluid-based nanofluids to that for Oldroyd-B fluids are discussed. The results showed that the values of f and Nu of Oldroyd-B-fluid-based nanofluids are larger than that of water-based nanofluids and that of pure Oldroyd-B fluids. The values of f increase with increasing Re, We and Φ, but with decreasing β. The values of Nu and PECt/PECf are enhanced with increasing Re, We, β and Φ. The increase of f is larger than that of Nu at lower Re, but is less than that of Nu at higher Re. It is more effective to use Oldroyd-B-fluid-based nanofluids with cylindrical nanoparticles to improve the heat transfer at the conditions of higher Re, We, β and Φ. Finally, the correlation formula of PECt/PECf as a function of Re, We, β and Φ is derived.

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Dell’Armi, Edoardo, Marco Zeppilli, Bruna Matturro, Simona Rossetti, Marco Petrangeli Papini, and Mauro Majone. "Effects of the Feeding Solution Composition on a Reductive/Oxidative Sequential Bioelectrochemical Process for Perchloroethylene Removal." Processes 9, no. 3 (February 24, 2021): 405. http://dx.doi.org/10.3390/pr9030405.

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Chlorinated aliphatic hydrocarbons (CAHs) are common groundwater contaminants due to their improper use in several industrial activities. Specialized microorganisms are able to perform the reductive dechlorination (RD) of high-chlorinated CAHs such as perchloroethylene (PCE), while the low-chlorinated ethenes such as vinyl chloride (VC) are more susceptible to oxidative mechanisms performed by aerobic dechlorinating microorganisms. Bioelectrochemical systems can be used as an effective strategy for the stimulation of both anaerobic and aerobic microbial dechlorination, i.e., a biocathode can be used as an electron donor to perform the RD, while a bioanode can provide the oxygen necessary for the aerobic dechlorination reaction. In this study, a sequential bioelectrochemical process constituted by two membrane-less microbial electrolysis cells connected in series has been, for the first time, operated with synthetic groundwater, also containing sulphate and nitrate, to simulate more realistic process conditions due to the possible establishment of competitive processes for the reducing power, with respect to previous research made with a PCE-contaminated mineral medium (with neither sulphate nor nitrate). The shift from mineral medium to synthetic groundwater showed the establishment of sulphate and nitrate reduction and caused the temporary decrease of the PCE removal efficiency from 100% to 85%. The analysis of the RD biomarkers (i.e., Dehalococcoides mccartyi 16S rRNA and tceA, bvcA, vcrA genes) confirmed the decrement of reductive dechlorination performances after the introduction of the synthetic groundwater, also characterized by a lower ionic strength and nutrients content. On the other hand, the system self-adapted the flowing current to the increased demand for the sulphate and nitrate reduction, so that reducing power was not in defect for the RD, although RD coulombic efficiency was less.

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Gatta, Nicola Gaetano, Andrea Parente, Francesca Guida, Sabatino Maione, and Vittorio Gentile. "Neuronutraceuticals Modulate Lipopolysaccharide- or Amyloid-β 1-42 Peptide-Induced Transglutaminase 2 Overexpression as a Marker of Neuroinflammation in Mouse Microglial Cells." Applied Sciences 11, no. 12 (June 20, 2021): 5718. http://dx.doi.org/10.3390/app11125718.

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Background: Tissue type 2 transglutaminase (TG2, E.C. 2.3.2,13) is reported to be involved in the phagocytosis of apoptotic cells in mouse microglial BV2 cells and peripheral macrophages. In this study, by using lipopolysaccharide (LPS)- or amyloid-β 1-42 (Aβ 1-42) peptide-stimulated microglial cell line BV2 and mouse primary microglial cells, we examined the effects of different neuronutraceutical compounds, such as curcumin (Cu) and N-Palmitoylethanolamine (PEA), known for their anti-inflammatory activity, on TG2 and several inflammatory or neuroprotective biomarker expressions. Methods: Mouse BV2 cells were treated with LPS or Aβ1-42 in the presence of curcumin or PEA, in order to evaluate the expression of TG2 and other inflammatory or neuroprotective markers using Real Time-PCR and Western blot analyses. Results: Curcumin and PEA were capable of reducing TG2 expression in mouse microglial cells during co-treatment with LPS or Aβ 1-42. Conclusions: The results show the role of TG2 as an important marker of neuroinflammation and suggest a possible use of curcumin and PEA in order to reduce LPS- or Aβ1-42-induced TG2 overexpression in mouse microglial cells.

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Sun, Jingyi, Zhonglin Chen, Shan Liu, Jing Kang, Yuhao Guo, Liming Cai, Jimin Shen, Binyuan Wang, Shengxin Zhao, and Zilong Song. "Catalytic Efficiency of Carbon-Cementitious Microfiltration Membrane on the Ozonation-Based Oxidation of Small Molecule Organic Compounds and Its Alkaline Buffering Effect in Aqueous Solution." Membranes 11, no. 8 (August 7, 2021): 601. http://dx.doi.org/10.3390/membranes11080601.

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In this study, powdered activated carbon (PAC) was added to replace the silica in a cementitious microfiltration membrane (CM) to solve the problems of the low mechanical strength and short lifetime of CMs. The carbon-cementitious microfiltration membrane (CCM) was fabricated by the dry pressing method and cured at room temperature. The bending strength of CCM was 12.69 MPa, which was about three times more than that of CM. The average pore size was 0.129 μm, and was reduced by about 80% compared to that of CM. The addition of PAC did not reduce the degradation efficiency of membrane catalytic ozonation. Because of the strong alkaline buffering ability of CCM, the CCM–ozone coupling process could eliminate the effect of the pH value of the solution. The strong alkaline environment inside the membrane pores effectively accelerated the ozone decomposition and produced oxidizing radicals, which accelerated the reaction rate and improved the utilization rate of ozone. The CCM–catalytic ozonation reaction of organic compounds occurred within the pores and membrane surface, resulting in the pH of the solution belonging to the neutral range. The addition of PAC accelerated the mass transfer and made the pollutants and oxidant react in the membrane pores and on the membrane surface. The reuse experiments of the CCM–ozone coupling process for removing nitrobenzene demonstrated that CCM has good catalytic activity and reuse stability. It broadens the application scope of CCM in the field of drinking water and provides theoretical support for the practical application of CCM.

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Bae, Sang-U., and Birm-June Kim. "Effects of Cellulose Nanocrystal and Inorganic Nanofillers on the Morphological and Mechanical Properties of Digital Light Processing (DLP) 3D-Printed Photopolymer Composites." Applied Sciences 11, no. 15 (July 25, 2021): 6835. http://dx.doi.org/10.3390/app11156835.

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Photopolymer composites filled with cellulose nanocrystal (CNC) and/or inorganic nanofillers were fabricated by using digital light processing (DLP) 3D printing. To investigate the effects of different CNC lyophilization concentrations and behaviors of CNC particles in the photopolymer composites, morphological and mechanical properties were analyzed. CNC loading levels affected the morphological and mechanical properties of the filled composites. Better CNC dispersion was seen at a lower lyophilization concentration, and the highest mechanical strength was observed in the 0.25 wt% CNC-filled composite. Furthermore, nano-precipitated calcium carbonate (nano-PCC) and nanoclay were added to photocurable resins, and then the effect of inorganic nanofillers on the morphological and mechanical properties of the composites were evaluated. By analyzing the morphological properties, the stress transfer mechanism of nano-PCC and nanoclay in the photopolymer composites was identified and related models were presented. These supported the improved mechanical strength of the composites filled with CNC, nano-PCC, and nanoclay. This study suggested a new approach using wood-derived cellulose nanomaterials and inorganic nanofillers as effective fillers for DLP 3D printing.

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Lin, Chin-Feng. "UFMC-Based Underwater Voice Transmission Scheme with LDPC Codes." Applied Sciences 11, no. 4 (February 18, 2021): 1818. http://dx.doi.org/10.3390/app11041818.

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An underwater universal filtered multicarrier (UFMC)-based voice transmission scheme is proposed using a 512-point inverse discrete Fourier transform, utilizing 10 sub-bands, and that each had 20 subcarriers. In this proposed UFMC method, the adaptive modulation technologies with 4 quadrature amplitude modulation (QAM), 16-QAM, and low-density parity-check (LDPC) channel coding were integrated. Additionally, the bit error rate (BER), transmission power weighting, the ratios of power-saving, and underwater voice transmission performance with perfect channel estimation (PCE), and 5% and 10% channel estimation errors (CEEs) were investigated. The underwater voice transmission had a BER quality of service 10−3. Simulation results showed that the PCE outperformed 5% and 10% CEEs, under 4-QAM, with gains of 0.5 and 0.9 dB, respectively, and a BER of 4×10−4. The PCE outperformed 5% and 10% CEEs, under 16-QAM, with gains of 0.5 and 2.4 dB, respectively, and a BER of 8.5×10−4. The proposed UFMC scheme can be applied to underwater voice transmission with a BER below 10−3 The proposed system showed a superior capability to contend with additive white Gaussian noise, underwater multipath channel fading, and CEEs.

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Poggio-Fraccari, Eduardo, Fernando Mariño, Miguel Laborde, and Graciela Baronetti. "Copper and nickel catalysts supported on praseodymium-doped ceria (PDC) for the water-gas shift reaction." Applied Catalysis A: General 460-461 (June 2013): 15–20. http://dx.doi.org/10.1016/j.apcata.2013.04.013.

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Oliete, Bonastre, Francois Potin, Eliane Cases, and Rémi Saurel. "Microfluidization as Homogenization Technique in Pea Globulin-Based Emulsions." Food and Bioprocess Technology 12, no. 5 (March 19, 2019): 877–82. http://dx.doi.org/10.1007/s11947-019-02265-3.

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Meloun, Milan. "Statistical methods in analytical chemistry, by P.C. Meier and R.E. Zund." Chemometrics and Intelligent Laboratory Systems 22, no. 2 (February 1994): 284–85. http://dx.doi.org/10.1016/0169-7439(94)80008-1.

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Melchior, Sofia, Sonia Calligaris, Giulia Bisson, and Lara Manzocco. "Understanding the impact of moderate-intensity pulsed electric fields (MIPEF) on structural and functional characteristics of pea, rice and gluten concentrates." Food and Bioprocess Technology 13, no. 12 (November 10, 2020): 2145–55. http://dx.doi.org/10.1007/s11947-020-02554-2.

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Abstract Aim The effect of moderate-intensity pulsed electric fields (MIPEF) was evaluated on vegetable protein concentrates from pea, rice, and gluten. Methods Five percent (w/w) suspensions of protein concentrates (pH 5 and 6) were exposed to up to 60,000 MIPEF pulses at 1.65 kV/cm. Both structural modifications (absorbance at 280 nm, free sulfhydryl groups, FT-IR-spectra) and functional properties (solubility, water and oil holding capacity, foamability) were analyzed. Results MIPEF was able to modify protein structure by inducing unfolding, intramolecular rearrangement, and formation of aggregates. However, these effects were strongly dependent on protein nature and pH. In the case of rice and pea samples, structural changes were associated with negligible modifications in functional properties. By contrast, noticeable changes in these properties were observed for gluten samples, especially after exposure to 20,000 pulses. In particular, at pH 6, an increase in water and oil holding capacity of gluten was detected, while at pH 5, its solubility almost doubled. Conclusion These results suggest the potential of MIPEF to steer structure of proteins and enhance their technological functionality.

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Journal articles on the topic 'Procesní pec'

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