Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/40576
Title: Developing a fast cordless soldering iron via induction heating [Desarrollo de un cautín inalámbrico rápido a través de calentamiento por inducción]
Author: Carreon-Alvarez, A.
Casillas, N.
Ibanez, J.G.
Hernandez, F.
Prado-Ramirez, R.
Barcena-Soto, M.
Gomez-Salazar, S.
Issue Date: 2008
Abstract: Concentrations of metals such as copper in alcoholic beverages must be strictly regulated due to negative effects ranging from beverage spoilage and hazing, to sensorial and health consequences. In this paper, a voltammetric alternative is presented for the analysis of copper in tequila, a Mexican spirituous alcoholic beverage. Anodic Stripping Voltammetry is applied and the standard addition method is used to quantify copper in this beverage at concentrations commonly present in tequila (<10 ppm) without sample pretreatment. Copper can be reduced and then oxidized quantitatively and reproducibly. A comparison of Anodic Stripping Voltammetry with Atomic Absorption Spectrometry is presented. Copyright " Taylor & Francis Group, LLC.",,,,,,"10.1080/00032710701577989",,,"http://hdl.handle.net/20.500.12104/40576","http://www.scopus.com/inward/record.url?eid=2-s2.0-39049125023&partnerID=40&md5=3f3a275554fe859670ecf1fbfd757a80",,,,,,"3",,"Analytical Letters",,"469
477",,"41",,"Scopus
WOS",,,,,,"Alcoholic beverage; ASV; Copper; RDE; Tequila",,,,,,"Determination of Cu in tequila by anodic stripping voltammetry",,"Article" "42380","123456789/35008",,"Díaz-Plascencia, D., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Rodríguez-Muela, C., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Mancillas-Flores, P., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Angulo, C., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Salvador, F., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Ruíz, O., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Rubio, H.O., Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periforico Francisco R. Almada km 1., Chihuahua, Mexico; Mena, S., Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Jalisco, Mexico; Elías, A., Instituto de Ciencia Animal, La Habana, Cuba",,"Diaz-Plascencia, D.
Rodriguez-Muela, C.
Mancillas-Flores, P.
Angulo, C.
Salvador, F.
Ruiz, O.
Rubio, H.O.
Mena, S.
Elias, A.",,"2011",,"The aim of this study was to develop an inoculum with four different substrates, these were evaluated with three commercial yeasts A, B and C of the genus Saccharomyces cerevisiae yeast and apple know, D, of the genus Kluyveromyces lactis, through its development aerobic conditions using oxygen in each liquid culture medium. During the fermentation 3 samples, were taken for treatment at different times (0, 2, 4, 8, 16, 32, 64 and 128 h), pH, temperature, carbohydrates, yeast counts and ammonia nitrogen were determined. A randomized statistical design was used with 4x4 factorial arrangements in plots using the procedure (Proc Mixed) program (SAS, 2004). The pH showed a similar pattern for all substrates with quadratic effect (P <0.01), and also showed an interaction (P <0.01) treatment by the quadratic effect of time, indicating that this increase was different between treatments. Temperature was increased (P <0.01) of the h128 h0 in all treatments, then declined (P <0.01) to stay close to the incubation temperature from h8. Ammonia nitrogen, difference was observed (P <0.01) between treatments and yeast. Yeast Count, an effect was observed (P <0.01) treatment interaction with yeast and time, this indicates that there were differences in the amount of yeast and their behavior was fluctuating in different substrates with different yeasts A, B, C and D. The highest concentration of yeasts was observed in t2 and t3 being so cel 8.6 * 108 * ml / L at T1 in the yeast h2 A, for t2 cel * 4.4 * 108 ml / L in the H32 with yeast B, for cel t3 * 5.6 * 108 ml / L in the h128 with the yeast C and the cel t4 * 1.7 * 109 ml / L in the h128 with the yeast D, being the best production of yeast. In this trial, the yeast population increased in greater proportion in the substrates of molasses and apple with the yeasts A and D.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40601","http://www.scopus.com/inward/record.url?eid=2-s2.0-80051966199&partnerID=40&md5=0559365264acc18775d423c2aaf3f692",,,,,,"1",,"Revista Electronica de Veterinaria",,,,"12",,"Scopus",,,,,,,,,,,,"Development of an inoculum with different substrates through solid state fermentation [Desarrollo de un inoculo con diferentes sustratos mediante fermentación sílida sumergida]",,"Article" "42368","123456789/35008",,"Mazón-Valadez, E.E., Centro Universitario de la Ciénega, Universidad de GuadalajaraGuadalajara, Mexico; Hernández-Sámano, A., Centro Universitario de la Ciénega, Universidad de GuadalajaraGuadalajara, Mexico; Estrada-Gutiérrez, J.C., Centro Universitario de la Ciénega, Universidad de GuadalajaraGuadalajara, Mexico; Ávila-Paz, J., Centro Universitario de la Ciénega, Universidad de GuadalajaraGuadalajara, Mexico; Cano-González, M.E., Centro Universitario de la Ciénega, Universidad de GuadalajaraGuadalajara, Mexico",,"Mazon-Valadez, E.E.
Hernandez-Samano, A.
Estrada-Gutierrez, J.C.
Avila-Paz, J.
Cano-Gonzalez, M.E.",,"2014",,"This study aims to present the design of a new soldering iron for welding electronic components that work via AC magnetic fields. Moreover, the device has been designed to operate in cordless mode. The system comprises of a resonant inverter that is capable of generating an alternating magnetic field of 250 kHz in the center of a coil of 11 wires. The heating element is a cylindrical piece of ferromagnetic stainless steel with a concentric core of copper, which is maintained in contact with a standard and commercial tip. Additionally, we determined the power factor and the efficiency of the energy transfer with a maximum power consumption of 134 watts. The system represents a good tool suitable for the realization of development boards or electronic tasks. " The author; licensee Universidad Nacional de Colombia.
URI: http://hdl.handle.net/20.500.12104/40589
http://www.scopus.com/inward/record.url?eid=2-s2.0-84918557030&partnerID=40&md5=96b314350b0d6780cec52e55ffc4004e
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