An outline for my methodology chapter Essay Example | Topics and Well Written Essays - 750 words

An outline for my methodology chapter - Essay Example It is a naturalistic approach that seeks to study and develop intervention impacts in both learning and teaching, and unfolds in four phases: informed exploration, enactment, local context evaluation, and design principle development. In addition, it will offer this research study a potential for better comprehension, improved learning and practice, and generation of theory by using multiple methods, as well as ongoing assessments of change impact (Reeves, 2005). Design based research as used in this research study is important because it provides a methodology for design and assessment of ESL innovations, in this case the use of Adobe Connect. It is also iterative and systematic, which is in line with the emerging comprehension of how ESL students learn. In addition, it is based on educational situations in real life, which makes it relevant for design and teaching practitioners, such as in this study (Celce-Murcia, 2011). Finally, design-based research will also encourage the researcher to work collaboratively in the creation and assessment of what impact the solutions to the learning issues have on the students. Design-based research will act as an analytical technique set that balances interpretivist and positivist paradigms while also attempting to bridge practice and theory in ESL. Design-based research, as a combination of theory-driven learning environment design and empirical educational research, will be important in understanding the manner in which educational interventions practically work (Norwich & Ylonen, 2013). Design-based research seeks to uncover underlying relationships between practices, designed artifact, and educational theory. In aiming to explain the connections between practice, tools, and theory in ESL, design-based research has dual objectives intending to respond to the needs of the learning environment and striving to increase the researcher’s comprehension of teaching (Ellis, 2013). In

Hemolysis of Horse Red Blood Cell Essay Example | Topics and Well Written Essays - 500 words

Hemolysis of Horse Red Blood Cell - Essay Example There are factors that contribute to the ability of the solute to pass through the cell membrane. One is the permeability of the cell membrane. Cell membrane is a lipid bilayer which does not allow ions and small hydrophilic molecules to freely pass the membrane (Kimball). Thus, for the sodium chloride, sodium sulfate and D-glucose solution to hemolyze the cell, a dilute solution should be used since this would increase the water concentration in the medium causing osmosis to occur. Another factor that determine membrane permeability is lipid solubility. Generally, low solubility in lipid would mean slower rate of entry to the cell (Crawford). Hydrophilic substances will pass through the membrane slowly. As shown in the results, D-glucose, sodium chloride and sodium sulfate were not able to cause hemolysis, Polarity and molecular size also affect the rate of entry of solute. Most polar molecules are hydrophilic; they cannot easily permeate the membrane (Cell Membrane, 2). Ethanol, propano-1-ol and glycerol, although polar, are small enough to pass through the membrane (Membrane Permeability). Notice that the time of hemolysis increases with molecular size with the glycerol having the longest time. Ammonium chloride was able to hemolyze the cell compared to other salts.