In homogeneous sampling, all the items in the sample are chosen because they have similar or identical traits. For example, people in a homogeneous sample might share the same age, location or employment. The selected traits are ones that are useful to a researcher. … Homogeneous samples tend to be:Read More →
Which of the following factors have been suggested as contributing to muscle fatigue? Loss of “central drive”. Reduction in calcium release in excitation-contraction coupling. Reduction in muscle blood flow owing to compression of blood vessels. What is a possible cause of muscle fatigue? Muscle weakness is commonly due to lackRead More →
A thiol generally has a much lower boiling point than the hydroxyl compound of like structure; for example, methanethiol boils at 6° C (43° F), methanol at 65° C (149° F). The lower aliphatic thiols are useful as warning odorants in fuel gases and are somewhat toxic. What is theRead More →
Ms Charlesworth said that while many kauri dense areas are covered by the SEA (significant ecological area) plan, which was introduced after blanket tree protection was lifted in 2012, even those trees can be cut down. … She stated there are no laws protecting trees, including natives, outside of SEAs.Read More →
A collimator is a device which narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam toRead More →
5 Reasons to Recycle — And How You Can Recycle Right Recycling keeps trash out of the landfill. … Recycling reduces our need for new raw materials. … Recycling conserves energy. … Recycling creates jobs. … Recycling reduces pollution. What are 5 benefits of recycling? Benefits of Recycling Reduces theRead More →
The definition of a gatekeeper is a person who controls access to something or someone. A secretary who controls who gets an appointment with a president of the company is an example of a gatekeeper. One who monitors or oversees the actions of others. One that is in charge ofRead More →
Generally, lipid peroxidation occurs when a hydroxyl radical abstracts an electron from an unsaturated fatty acid. This creates an unstable lipid radical, which can react with oxygen, forming a fatty acid peroxyl radical. … Repeated cycles of lipid peroxidation can cause serious damage to cell membranes. What is the meaningRead More →
They were awarded the Nobel Prize in 1935 for this discovery, one year after Marie Curie passed away. … In addition to helping advance the rights of women, Marie Curie had a major impact on society through her establishment of Institutes of Radium in France and Poland, providing them withRead More →
Why is the hydrologic cycle important? The hydrologic cycle is important because it is how water reaches plants, animals and us! Besides providing people, animals and plants with water, it also moves things like nutrients, pathogens and sediment in and out of aquatic ecosystems. What field of engineering uses hydrology?Read More →