Continuous formation of microbubbles during partial coalescence of bubbles from a submerged capillary nozzle

AIChE Journal ◽  
2020 ◽  
Vol 66 (7) ◽  
Author(s):  
Jiguo Tang ◽  
Shengzhi Yu ◽  
Licheng Sun ◽  
Guo Xie ◽  
Xiao Li
Keyword(s):  
Partial Coalescence ◽  
Continuous Formation

Marangoni-flow-induced partial coalescence of a droplet on a liquid/air interface

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Kai Sun ◽  
Peng Zhang ◽  
Zhizhao Che ◽  
Tianyou Wang
Keyword(s):  
Marangoni Flow ◽  
Partial Coalescence ◽  
Air Interface

scholarly journals Sample preparation for laser-microdissection of soybean shoot apical meristem

2012 ◽  
Vol 3 (1) ◽  
pp. 3 ◽  
Author(s):  
Chui E. Wong ◽  
Mohan B. Singh ◽  
Prem L. Bhalla
Keyword(s):  
Sample Preparation ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Laser Microdissection ◽  
Specific Cell ◽  
Legume Crop ◽  
Continuous Formation ◽  
Molecular Events ◽  
Depth Analysis ◽  
Specialized Equipment

The shoot apical meristem houses stem cells responsible for the continuous formation of aerial plant organs including leaves and stems throughout the life of plants. Laser-microdissection in combination with high-throughput technology such as next generation sequencing permits an in-depth analysis of molecular events associated with specific cell type of interest. Sample preparation is the most critical step in ensuring good quality RNA to be extracted from samples following laser-microdissection. Here, we optimized the sample preparation for a major legume crop, soybean. We used Farmer’s solution as a fixative and paraffin as the embedding medium for soybean shoot apical meristem tissue without the use of any specialized equipment. Shorter time for tissue fixation (two days) was found to be critical for the preservation of RNA in soybean shoot apical meristem. We further demonstrated the utility of this method for different tissues derived from soybean and rice. The method outlined here shall facilitate studies on crop plants involving laser-microdissection.

scholarly journals Structure and growth behavior of centimeter-sized helical oleate assemblies formed with assistance of medium-length carboxylic acids

Soft Matter ◽  
2015 ◽  
Vol 11 (18) ◽  
pp. 3550-3558 ◽  
Author(s):  
Yoshiyuki Kageyama ◽  
Tomonori Ikegami ◽  
Natsuko Hiramatsu ◽  
Sadamu Takeda ◽  
Tadashi Sugawara
Keyword(s):  
Carboxylic Acids ◽  
Self Assembly ◽  
Growth Behavior ◽  
Aliphatic Acids ◽  
Continuous Formation ◽  
Medium Length

Medium-length aliphatic acids promote the continuous formation of helical self-assembly of oleate.

scholarly journals Estratégias de trabalho docente no ensino de criação publicitária: a atividade de orientação como situação de aprendizagem / Strategies of educational work in the teaching of advertising design: the orientation activity as learning situation

Intexto ◽  
2016 ◽  
pp. 163
Author(s):  
Fábio Hansen ◽  
Juliana Petermann ◽  
Rodrigo Stéfani Correa
Keyword(s):  
Teaching Strategy ◽  
Field Work ◽  
Learning Situation ◽  
Educational Work ◽  
Knowledge Change ◽  
Continuous Formation ◽  
Orientation Process ◽  
Teacher Needs ◽  
Pedagogic Practices ◽  
Design Orientation

Em uma investigação apoiada pelo MCTI/CNPq, realizada em parceria interinstitucional entre a UFPE, a UFSM e a UFPR, buscamos examinar as práticas pedagógicas adotadas pelos docentes que atuam em disciplinas cuja finalidade é o ensino de criação publicitária. Atenção especial recai ao processo de orientação - estratégia de ensino em que o professor acompanha os estudantes de forma sistemática e colabora na superação de dificuldades. Observamos, a partir do trabalho de campo ancorado em gravações de aulas em áudio e vídeo, que o professor publicitário necessita de contínua formação para converter a atividade de orientação em um instante estratégico de troca de conhecimento, interação e produção de sentido, a fim de favorecer a mediação e a formação de um ambiente adequado para aprendizagem em que o estudante queira se lançar nos desafios do querer aprender criatividade.Palavras-chaveEnsino. Criação publicitária. Processo de orientação. Formação publicitária. Trabalho docente. AbstractIn a leaning investigation for MCTI/CNPq, accomplished in a inter-institutional partnership among UFPE, UFSM and UFPR, seeking to examine the pedagogic practices adopted by the teachers that act in disciplines whose purpose is the teaching of advertising design. Special attention relapses on the orientation process - teaching strategy in that the teacher accompanies the students in a systematic way and it collaborates in the overcoming of difficulties. We observed, starting from the field work anchored in recordings of classes in audio and video, that the advertising teacher needs continuous formation to convert the orientation activity in a strategic instant of knowledge change, interaction and sense production, in order to favor the mediation and the formation of an appropriate atmosphere for learning that the student wants to set in the challenges of wanting to learn creativity.KeywordsTeaching. Advertising design. Orientation process. Advertising formation. Educational word.

Influence of cooling rate on partial coalescence in natural dairy cream

2019 ◽  
Vol 120 ◽  
pp. 819-828 ◽  
Author(s):  
Kim Moens ◽  
Daylan A. Tzompa-Sosa ◽  
Davy Van de Walle ◽  
Paul Van der Meeren ◽  
Koen Dewettinck
Keyword(s):  
Cooling Rate ◽  
Partial Coalescence

Nucleation and growth of Al2O3/metal composites by oxidation of aluminum alloys

1991 ◽  
Vol 6 (9) ◽  
pp. 1964-1981 ◽  
Author(s):  
O. Salas ◽  
H. Ni ◽  
V. Jayaram ◽  
K.C. Vlach ◽  
C.G. Levi ◽  
...  
Keyword(s):  
Growth Process ◽  
Nucleation And Growth ◽  
Al Alloy ◽  
Oxide Growth ◽  
Spinel Layer ◽  
Initial Oxidation ◽  
Temperature Oxidation ◽  
Continuous Formation ◽  
Initial Event ◽  
Al Composite

The nucleation and growth mechanisms during high temperature oxidation of liquid Al−3% Mg and Al−3% Mg−3% Si alloys were studied with the aim of enhancing our understanding of a new composite fabrication process. The typical oxidation sequence consists of an initial event of rapid but brief oxidation, followed by an incubation period of limited oxide growth after which bulk Al2O3/Al composite forms. A duplex oxide layer, MgO (upper) and MgAl2O4 (lower), forms on the alloy surface during initial oxidation and incubation. The spinel layer remains next to the liquid alloy during bulk oxide growth and is the eventual repository for most of the magnesium in the original alloy. Metal microchannels developed during incubation continuously supply alloy through the composite to the reaction interface. During the growth process, a layered structure exists at the upper extremity of the composite, consisting of MgO at the top surface, MgAl2O4 (probably discontinuous), Al alloy, and finally the bulk Al2O3 composite containing microchannels of the alloy. The bulk oxide growth mechanism appears to involve continuous formation and dissolution of the Mg-rich oxides at the surface, diffusion of oxygen through the underlying liquid metal, and epitaxial growth of Al2O3 on the existing composite body. The roles of Mg and Si in the composite growth process are discussed.

Development of Production Technology for Membrane-Electrode Assemblies With Radical Capturing Layer

2013 ◽  
Vol 10 (1) ◽  
Author(s):  
Toshiro Kobayashi ◽  
Etsuro Hirai ◽  
Hideki Itou ◽  
Takuya Moriga
Keyword(s):  
Production Technology ◽  
Mass Production ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Continuous Formation ◽  
Forming Technology ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies ◽  
Opening Ratio

This paper describes the development of mass-production technology for membrane-electrode assemblies (MEA) with a radical capturing layer and verifies its performance. Some of the authors of this paper previously developed an MEA with a radical capturing layer along the boundaries between the electrode catalyst layer and the polymer membrane to realize an endurance time of 20,000 h in accelerated daily start and daily stop (DSS) deterioration tests. Commercialization of these MEAs requires a production technology that suits mass production lines and provides reasonable cost performance. After developing a water-based slurry and selecting a gas diffusion layer (GDL), a catalyst layer forming technology uses a rotary screen method for electrode formation. Studies confirmed continuous formation of the catalyst layer, obtaining an anode/cathode thickness of 55 μm (+10/−20)/50 μm (+10/−20) by optimizing the opening ratio and thickness of the screen plate. A layer-forming technology developed for the radical capturing layer uses a two-fluid spraying method. Continuous formation of an 8 μm thick (±3 μm) radical capturing layer proved feasible by determining the appropriate slurry viscosity, spray head selection, and optimization of spraying conditions.

scholarly journals WEBINÁRIOS COMO UMA ALTERNATIVA DE FORMAÇÃO CONTINUADA: UMA EXPERIÊNCIA COM FERRAMENTAS DIGITAIS / WEBINARS AS AN ALTERNATIVE FOR CONTINUOUS FORMATION: AN EXPERIENCE WITH DIGITAL TOOLS

2021 ◽  
Vol 7 (1) ◽  
pp. 11500-11512
Author(s):  
Alena Sousa de Melo ◽  
Eliana Souza Bezerra ◽  
Júlio César da Silva Dantas ◽  
Otoniel Inácio da Silva
Keyword(s):  
Digital Tools ◽  
Continuous Formation
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