نتایج جستجو برای: peba
تعداد نتایج: 52 فیلتر نتایج به سال:
The process of learning is an incremental exploration of a domain; we do not learn the concepts in a domain in an isolated manner, but instead augment our existing knowledge with new concepts. Consequently, when teaching a new concept to a student, her existing knowledge should be employed in a way which facilitates the process of learning. In describing a new concept to a hearer, it is often b...
By tuning hydrolysis duration of a segmented ether-amide copolymer (PEBA), range specimens presenting various macromolecular structures has been produced. Knowing that scissions occur predominantly at the bond between hard and soft blocks, for given phase structure we study impact interconnection changes on strain-induced crystallization (SIC) occurring during tensile loading. The consequences ...
In this research, Polyether block amide (PEBA) containing different loadings of α-Al2O3 particles was deposited on top the polysulfone (PSf ) supports to form PEBA 1657‒α-Al2O3/PSf multilayer composite mixed matrix membranes (MCMMMs). Multilayer Composite structure used overcome sedimentation fillers in polymer matrix. Moreover, alpha phase Al2O3 applied improve distribution these at higher loa...
The effects of synthesis time and the number layers were investigated on Na-X zeolite sublayer for fabricating a PEBA/Na-X hybrid membrane. CO2/N2 separation was considered as objective function to obtain an effective sublayer. SEM AFM studies synthesized sublayers reveal that 6 hour one layer give (ZSL6-1) with sub-micron thickness (< 1µm), roughness 13 nm. N2 permeation (11900 GPU) shows low ...
O presente trabalho propõe uma reflexão sobre a atividade de pesquisa nas áreas das Ciências Sociais, bem como Humanas tendo objetivo geral suscitar questões as cristalizações presentes metodologias e métodos pesquisa. Para tanto, realiza um estudo teórico baseado nos pressupostos da qualitativa documental. Com interesse em desbravar novas possibilidades na educacional, mais especificamente no ...
Comparisons are prominent in textual descriptions. In particular, when describing an entity to a listener, comparison is a useful tool for relating new information to concepts which are known to the hearer. This paper describes the use of comparison in the generation of descriptions, and presents a strategy for selecting the most salient properties which liken or distinguish the entities being ...
Comparisons are typically employed to distinguish similar entities, or to illustrate a property of an entity by referring to another commonly known entity which shares that property. Based on an analysis of a corpus of encyclopædia texts, we define three types of comparisons and outline some strategies for applying these in the generation of entity descriptions. We describe how these comparison...
Comparisons are typically employed to distinguish similar entities, or to illustrate a property of an entity by referring to another com• monly known entity which shares that property. Based on an analysis of a corpus of encyclopaedia texts, we define three types of comparisons and outline some strategies for applying these in the generation of entity descriptions. We describe how these compari...
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