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Alvarado-Rosales, D.,Nieto-Lopez, E.H.,Teliz-Ortiz, D.,Ayala-Escobar, V.,Silva-Rojas, H.V.,Nieto-Angel, R.,Leyva-Mir, S.G.,Jimenez-Nieto, A.,Mendez-Inocencio, C. The Korean Society of Plant Pathology 2015 식물병연구 Vol.21 No.3
The tejocote (Crataegus spp.) is a tree considered to be native to Mexico. The aim of this study was to identify the causal agent of tejocote rust in the State of Puebla. Tejocote fruits were sampled in 2012 and 2013. The fungus was studied morphologically using light and scanning electron microscopy and molecularly using phylogenetic analysis of 18S and 28S rDNA genes. The fungus was identified as Gymnosporangium clavipes on tejocote fruits. To our knowledge, this is the first confirmed report of Gymnosporangium clavipes Cooke & Peck affecting Crataegus mexicana var. Chapeado and C. gracilior in Puebla Mexico.
D. Alvarado-Rosales,E. H. Nieto-López,D. Téliz-Ortiz,V. Ayala-Escobar,R. Nieto-Angel,H. V. Silva-Rojas,S. G. Leyva-Mir,A. Jiménez-Nieto,C. Méndez-Inocencio 한국식물병리학회 2015 식물병연구 Vol.21 No.3
The tejocote (Crataegus spp.) is a tree considered to be native to Mexico. The aim of this study was to identify the causal agent of tejocote rust in the State of Puebla. Tejocote fruits were sampled in 2012 and 2013. The fungus was studied morphologically using light and scanning electron microscopy and molecularly using phylogenetic analysis of 18S and 28S rDNA genes. The fungus was identified as Gymnosporangium clavipes on tejocote fruits. To our knowledge, this is the first confirmed report of Gymnosporangium clavipes Cooke & Peck affecting Crataegus mexicana var. Chapeado and C. gracilior in Puebla Mexico.
Properties of the avocado oil extracted using centrifugation and ultrasound-assisted methods
M. R. Perez-Saucedo,E. I. Jimenez-Ruiz,J. G. Rodrıguez-Carpena,J. A. Ragazzo-Sanchez,J. A. Ulloa,J. C. Ramırez-Ramırez,C. R. Gaston-Pena,P. U. Bautista-Rosales 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.8
The aim of this work was to evaluate the technologies effect of cold extraction by centrifugation (CE) and ultrasound-assisted (US-CE) methods without adding water, on the avocado oil yield, nutritional composition, physicochemical characteristics, oxidative stability (oxidation temperature and time, besides activation energy) and accelerated shelf life regarding hexane extraction (control). The US-CE improved the physicochemical properties such as acidity, peroxides, and iodine indexes regarding CE and Control. US-CE improved the yield, nutritional quality of fatty acids, oxidative stability, shelf life, and ω-6/ω-3 ratio regarding CE. Furthermore, US-CE improved the ratio yield/time extraction of the oil and increased the oxidation temperature regarding control. The main advantage of oils extracted using CE and US-CE concerning control was higher oxidative stability. The most representative polyunsaturated fatty acids identified in all treatments were γ-linolenic and conjugated α-linolenic acids. α-linolenic acid was only detected in US-CE and control.
Synthesis of highly carboxylated latex particles using a power feed process
R. Santilla´n,M. Corea,E. Nieves,C.P. Alejandre,C. Gomez-Yanez,J.M. del Rı´o,H. Dorantes-Rosales,M.E. Navarro-Clemente 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
Two series of highly carboxylated latex particles were synthesized via a power feed process. The concentration carboxylic groups were varied inside the particles and a gradient in the concentration from the interior to the surface was created. The power feed process, proposed by Bassett et al., was used for the synthesis of the functionalized materials and a mathematical model was proposed for this process and theoretical predictions for the concentration of carboxylic groups inside the particles were corroborated with experimental results. A methodology based on thermodynamic formalism is proposed to study the response of these materials to ion exchange.
C. G. Garay-Reyes,S. E. Hernández-Martínez,J. L. Hernández-Rivera,J. J. Cruz-Rivera,E. J. Gutiérrez-Castañeda,H. J. Dorantes-Rosales,J. Aguilar-Santillan,R. Martínez-Sánchez 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.2
According to Lifshitz, Slyozov, and Wagner (LSW) and Trans-Interface Diffusion-Controlled (TICD) theoreticalmodels, this paper reports the microstructure and its coarsening behavior of γ' metastable-coherentprecipitates in concentration gradient of Ni-13.75Ti (at%)/Ni generated by diffusion couple. The coarseningof precipitates was evaluated in two different Ti contents (R1-11.4Ti (at%) and R2-13Ti (at%)) generated alongthe concentration gradient and includes average size, size distributions and growth rate. The solvus andmetastable-coherent bimodal lines as determined at 850 °C of 9.16 (at%) and 9.92Ti (at%) respectively byscanning electron microscopy. This paper suggests that elastic strains produced by the matrix/precipitate latticemismatch caused significant deviations between the experimental results and those predicted by the LSW or TIDCtheories. Activation energies for TIDC (Qi) and LSW (Qr) are Qr: 219.69 and 172.61 kJ mol-1for R1 and R2regions, respectively, and Qi: 218.46 and 164.56 kJmol-1for R1 and R2 regions, respectively. A concentration gradientallows the study of various alloys with different concentration and volume-fraction in a single sample.
Remediation of contaminated marine sediment using electrokinetic–Fenton technology
M. Pazos,M.A. Sanroman,O. Iglesias,J. Gomez,E. Rosales 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
In this work dredge marine sediments contaminated by petroleum hydrocarbon (TPH) and metals, such as Zn, Pb, Cu and Hg, were treated by electrokinetic treatment. EDTA and Tween 80 were used as processing fluid to enhance the solubility of metals and TPH, respectively. On the other hand, a combination of a Fenton’s reagent and EDTA was evaluated to promote the in situ degradation of TPH and to solubilize the metals. After 30 days of treatment, the best results were obtained by EK–Fenton–EDTA process with a removal of about 90% for TPH, 57.3% of Zn, 59.8% of Pb, 59.4% of Cu and 54.5% of Hg.