Continuous Preparation of Size-Controllable BaTiO3 Nanoparticles in a Rotor–Stator Spinning Disk Reactor

2021 ◽  
Vol 60 (40) ◽  
pp. 14511-14518
Author(s):  
Danrui Zou ◽  
Jun Li ◽  
Jie Deng ◽  
Yang Jin ◽  
Ming Chen
2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Leonor Alexandra Rodríguez Álava

Este artículo está encaminado a caracterizar el proceso de formación continua del docente del nivel medio en ejercicio asociado a la formación y desarrollo de sus competencias docentes, para lo que fueron utilizados métodos como   el análisis y síntesis, inducción y deducción, abstracción y concreción, la entrevista, la encuesta y  el cuestionario, donde a partir de sus resultados se  llega a la consideración de que la formación continua es la vía idónea para la formación y desarrollo de competencias docentes en los profesores en ejercicio, donde se debe asumir un modelo que propicie la reflexión sobre la propia práctica del docente, un clima de colaboración   y el profesor como sujeto activo de ese proceso.   Palabras claves: calidad educativa,   competencias docentes,   educador, estudio, preparación continua,  ABSTRACT   This article aims to characterize the process of education for teachers of middle level associated with exercise training and development of their teaching skills, for which methods were used as analysis and synthesis, induction and deduction, abstraction and concreteness, interview and questionnaire survey, where from their results leads to the consideration that the training is the ideal way for the formation and development of teaching skills in practicing teachers, where they must assume a model that encourages reflection on own teaching practice, a climate of collaboration and the teacher as an active subject of that process Keywords: quality of education, teaching skills, teacher, study, continuous preparation


Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 753
Author(s):  
M. Baibarac ◽  
A. Nila ◽  
I. Smaranda ◽  
M. Stroe ◽  
L. Stingescu ◽  
...  

In this work, new films containing composite materials based on blends of thermoplastic polymers of the polyurethane (TPU) and polyolefin (TPO) type, in the absence and presence of BaTiO3 nanoparticles (NPs) with the size smaller 100 nm, were prepared. The vibrational properties of the free films depending on the weight ratio of the two thermoplastic polymers were studied. Our results demonstrate that these films are optically active, with strong, broad, and adjustable photoluminescence by varying the amount of TPU. The crystalline structure of BaTiO3 and the influence of thermoplastic polymers on the crystallization process of these inorganic NPs were determined by X-ray diffraction (XRD) studies. The vibrational changes induced in the thermoplastic polymer’s matrix of the BaTiO3 NPs were showcased by Raman scattering and FTIR spectroscopy. The incorporation of BaTiO3 NPs in the matrix of thermoplastic elastomers revealed the shift dependence of the photoluminescence (PL) band depending on the BaTiO3 NP concentration, which was capable of covering a wide visible spectral range. The dependencies of the dielectric relaxation phenomena with the weight of BaTiO3 NPs in thermoplastic polymers blends were also demonstrated.


Author(s):  
Arturo N. Manzano Martínez ◽  
Arnab Chaudhuri ◽  
Matthijs Besten ◽  
Melissa Assirelli ◽  
John van der Schaaf
Keyword(s):  

2018 ◽  
Vol 39 (4) ◽  
pp. 045709 ◽  
Author(s):  
Mário S M N F Gomes ◽  
Pablo Martín-Ramos ◽  
Pedro S Pereira da Silva ◽  
Manuela Ramos Silva

2000 ◽  
Vol 39 (7) ◽  
pp. 2175-2182 ◽  
Author(s):  
Paul Oxley ◽  
Clemens Brechtelsbauer ◽  
Francois Ricard ◽  
Norman Lewis ◽  
Colin Ramshaw

2014 ◽  
Vol 127 ◽  
pp. 103-110 ◽  
Author(s):  
Kang-Kang Li ◽  
Xi Zhang ◽  
Qin Huang ◽  
Shou-Wei Yin ◽  
Xiao-Quan Yang ◽  
...  

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