نتایج جستجو برای: problematizing scaffolds

تعداد نتایج: 18882  

Journal: :Science Education 2021

Although existing literature suggests that teachers perceive, mobilize, and leverage resources to support ambitious instruction, less is known about how students jointly take up for co-constructing scientific knowledge. This study examines utilize aspects of practice-oriented curriculum materials students' everyday experiences as problematize their inquiry. I present an analysis employ engage i...

2007
Jesper Sjöström

This paper discusses the mainstream discourse of chemistry and suggests a complementary discourse. On a disciplinary level, the discourse of chemistry is based on objectivism, rationalism, and molecular reductionism. On a societal level, the discourse is based on modernism. The aims of chemical research and education are often unclear, which nowadays often leads to an emphasis on the needs from...

2016
Scott Eacott

The social sciences are paying increasing attention to relations. In contributing to this ongoing dialogue and debate Educational Leadership Relationally (Eacott, 2015) articulates a relational research program for the study of educational administration and leadership. This paper provides an overview of the relational program with particular attention to the five central tenets of the methodol...

Introduction: Tissue engineering is the repair and replacement of damaged tissues and requires a combination of cells, growth factor and porous scaffolds. Scaffolds, as one of the main components in tissue engineering, are used as a template for tissue regeneration and induction and guidance of growth of the new and biologically active tissues. An ideal scaffold in tissue engineering, imitating...

Journal: :cell journal 0

objective: assessments of cell reactions such as motility, orientation and activation to the topography of the substratum will assist with the fabrication of a proper implantable scaffold for future tissue engineering applications.the current challenge is to analyze the orientation effect of elecrospun nanofibers of poly (ε-caprolactone) (pcl) on viability and proliferation of mouse embryonic s...

Tissue-engineering scaffolds provide biological and mechanical frameworks for cell adhesion, growth, and differentiation. Nanofibrous scaffolds mimic the native extracellular matrix (ECM) and play a significant role in formation and remodeling of tissues and/or organs . One way to mimic the desired properties of fibrous ECM is adding nanoparticles into the polymer matrix. In the current study, ...

Journal: :modares journal of medical sciences: pathobiology 2010
fatemeh mottaghitalab vahid mottaghitalab mehdi farokhi nasim amiralian ali eslamifar

objective: nowadays, as the field of neural tissue engineering advances, the fabrication and application of combined structures open a new window of research for the regeneration of nervous system injuries. in this study, chitosan/poly(vinyl alcohol)-carbon nanotube nanocomposites has been exploited as scaffolds. materials and methods: electrospinning was used to fabricate chitosan/poly(vinyl ...

Journal: Nanomedicine Journal 2019

Objective(s): Scaffolds are considered as biological substitutes in bone defects which improve and accelerate the healing process of surrounding tissue. In recent years a major challenge in biomaterials is to produce porous materials with properties similar to bone tissue. In this study, the natural bioactive hydroxyapatite scaffolds with nano Diopside /Forstrite coating was successfully synthe...

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