Businessbooksummariesreview.com

stem cell

The Crystal Palace was originally erected in London, England in 1851. The construction system consisted of prefabricated and wrought iron elements along with glass. The palace was based on twenty-foot modules and designed by Joseph Paxton and Charles Fox. The Crystal Palace had extreme significance because it was thefirst large building constructed of metal and glass. In addition, the Crystal Palace was thefirst building erected in which the outer walls were not engineered to provide support for the structure. I believe the Crystal Palace’s most significant contribution to building was it was thefirst building to be built pre- fabricated.
The evolutionary model by Darwin is based on 3 primary functions. First, blind variation. Second, selection process. Third, selective retention. Our design and creativity comes directly from our evolution. As we retain past experiences, products, and ideas we build from them. For example, the stagecoach and its design carrying over into the automobile. The similarities between the two are extremely similar. This is a perfect example of how evolution molded our design of the automobile. As in Darwin’s evolutionary model, blind variation plays a part in design and creativity also. For example, thefirst works that surfaced regarding the creation of the wheel. This invention was of truly blind variation.
The principle of ceteris paribus applies to all research where the variables are being manipulated (experimental, quasi-experimental) and it also applies to studies where treatment is being controlled. Ceteris paribus means “all things being equal” and involves the procedures we use to control the variance in our study.
All research is presented with innumerable opportunities for unpredictably varying the conditions in which the research is being performed. Controlling these is a hallmark of quality research. Some variance is to be expected and there’s a way to measure these random errors….

Leave a Reply

Your email address will not be published. Required fields are marked *

Stem Cell

Medical Science of the 22nd century: Stem Cells
Stem cell research is a new and controversial topic these days.Stem cells a re used to treat many once incurable diseases such as diabetes, Parkinson's, and other neurological diseases.The limited success with animal stem cells has lead doctors to rely on human stem cell lines.According to the new law doctors are legally able to obtain stem cells from adult sources.This provides limited use do to the fact that most adults need their neurological stem cells even if they do not use them.Many doctors have agreed on the fact that embryonic stem cells are much more effective.However, this means taking the stem cells from aborted fetuses or unused in vitro fertilization embryos.Using a technique that avoids the ethical landmines associated with embryonic stem cell research, scientists have come up with a new way to obtain stem cells capable of differentiating into nerve cells and other types of tissue cells by using unfertilized mouse eggs. The process may someday be used on human tissues.Doctors have announced that they had cultivated neurons and other tissue cells from stem cells harvested from mouse eggs developed through a process called parthenogenesis, which does not require any sperm or the use of somatic cell nuclear transfer.The next step is to verify that the tissue is normal and does not cause any harm if used for transplantation.The drawback in the new method is that it works for females only: there is no way to make stem cells from sperm. But Doctors hope to solve the problem by obtaining other tissue types from these stem cells, and eventually develop a method that can be used be men as well as for women.Artecel Sciences in Durham, N.C. also have a plan for obtaining stem cells.They will soon begin animal tests of its new method of using stem cells from adipose (fat) tissue to expand umbilical cord blood stem cells.Depending on the outcome of the t…

Leave a Reply

Your email address will not be published. Required fields are marked *

x

Hi!
I'm Harold

Would you like to get a custom essay? How about receiving a customized one?

Check it out