Superflab Vs Play-Doh

The solid water was the control variable in the experiment and the investigators compared values that resulted from irradiation of the solid water with each bolus’ average Dmax. Table 1 recorded the ratios that resulted from these values. ANOVA calculations from the values shown in Table 1 resulted in an F value of 762.65 and a P value of less than 0.0001. The investigator compared the results between each individual group with a Tukey HSD test. When compared to one another, each sample resulted in a P value less than 0.01.

A half life lab was conducted by rolling pennies in a cup, and then setting aside those which were heads down. This process represents a half-life of the atom, or the time required for half of a substance sample to decay. The purpose of performing this lab was to simulate the transformation of a radioisotope over time, and to graph the data in a way that relates it to radioactive decay and half-lives. The presumed result of this experiment was that a little less than half the pennies would be face down due to some inconsistencies when shaking and pouring the pennies out of the cup.

6 Megavoltage (MV) photons treat many superficial tumors. More importantly, they often require a bolus to bring the depth of maximum dose closer to the skin surface. Also, a bolus compensates for uneven skin surfaces or irregular contours on the patient’s surface. The depth of maximum equilibrium describes the depth in which the maximum dose of the formulated radiation deposited into the skin (Washington & Leaver, 2010). Bolus material should be flexible, pliable, and tissue-equivalent. There is no study that compares green Play-Doh, orange Play-Doh, water and uncooked rice to Superflab for providing maximum dose buildup, Dmax.

X-rays have numerous different effects on the tissues of the body, depending on the time of exposure and energy of the X-ray photons. Best contrast between different tissues is when the photon energy is about 30 keV, for diagnostic purposes. Resulting in the photoelectric effect dominating at this energy. The tissues absorb X-rays and electrons are released. The X-ray absorption depends on the number of protons in the nuclei of the atoms encountered. A high number will attenuate the beam, producing a strong x-ray shadow, enabling for a high quality image of

Beginning with the accident at Three Mile Island in 1979, a widespread belief has proliferated that all levels of ionizing radiation are dangerous. Since 1980, radiation hormesis studies have shown there is actually a threshold of danger with high level exposures, but below that threshold low dose radiation is essentially safe and quite possibly beneficial to life. Yet, this relatively new, seemingly contradictory understanding of radiation's health effects has gone essentially unknown to the general public. In order to grasp the reasons why, we must again return to the bombing of Hiroshima and Nagasaki.

This note is very important, because radiation is a very dangerous thing and you have to make sure you know the steps and for what you’re doing. Never take a risk.

of the first subatomic particle. In order to do this successfully, Thompson constructed a cathode ray tube that allowed him to determine the ratio of the cathode ray particle’s charge to its mass. The cathode ray tube Thompson constructed was an “air tight” glass tube that had a cathode and an anode (with a small slit) attached to a power source, an electromagnet, a pair of charged plates, and a zinc sulfide coating at the front of the tube. The cathode is a negatively charged metal electrode which produces cathode rays, whereas the anode is a positively charged electrode that allows electrons

Well, fidget spinners are fun but what's the point! I mean all you do is put it in between your fingers, flick it and then it spins. But slime is a whole other level! This is why slime is better than fidget spinners.

Walker et al. (2005) performed this study to determine the differences in producing the maximum dose buildup while using Play-Doh, water soaked gauze, and Superflab. The researchers wanted to determine if Play-Doh and water soaked gauze were adequate alternatives to Superflab. At the beginning they accurately measured the radiation doses to be less than 10.0 cGy. Next, they made each bolus material 5 mm thick and then placed TLDs at the center of the beam where they placed each bolus and irradiated them 5 times each. Then, they calculated the mean dose, standard

Medalia (2011) concludes that ionizing radiation, in other words radiation separate from harmless radio waves and light, has the ability to knock electrons out of atoms, causing a condition that produces an electrically charged atom that can damage human cells. Only a very small amount is needed to produce biological change. Symptoms include cancer, genetic mutations, sickness, vomiting, diarrhea, hemorrhaging, and at high doses, death within hours (Medalia 2011).

Every isotope that is created through this accelerator is different and unique. Each particle is exposed to a different amount of magnetic field and for how much time. The different amounts of radiation help to solve different medical conditions as well as produce different kinds of solutions for the diagnosis that an individual might

Since the technologies being used only bounce waves of the body surface, this leaves then skin highly exposed to concentrated amounts of radiation. Health side effect studies of full body scanners have been labeled classified and inaccessible to the general public. Four professors from the University of California- San Francisco, whom are well respected cancer, X-ray crystallographers and imaging experts stated in a letter to the Obama administration that, “The low-energy rays do a “Compton scatter” off tissue layers just under the skin, possibly exposing some vital areas and leaving the tissues at risk of mutation. When an X-ray Compton scatters, it doesn’t shift an electron to a higher energy level; instead, it hits the electron hard enough to dislodge it from its atom.” The authors note that this process is “likely breaking bonds,” which could cause mutations in cells and raise the risk of cancer (Johnston). Furthermore, the UCSF researchers write in their letter, “older passengers are more susceptible to mutagenic effects of X-rays, and “the risk of

The collapse of China's Manchu dynasty was a protracted and sophisticated method. dynasty rule step by step folded throughout the last half of the nineteenth century and also the early years of the 20th, attributable to an advanced interaction between internal and external factors. One major causative thinks about dynasty China's downfall was European imperialism. the foremost devastating blow came within the narcotic Wars of 1839-1842 and 1856-1860, when that Britain obligatory unequal treaties on the defeated Chinese and took management of the city. This embarrassment showed all of China's neighbors and tributaries that the supposedly mighty China was weak and vulnerable. Chinese peasants elevated a huge anti-foreigner movement. At 1900 was

1. Tell us about a Community Service project which was personally significant to you. Describe your involvement.

Stingy, egotistical, and narcissistic are all words associated with the word selfish. Usually, upon hearing the word, selfish, people tend to associate it with a negative connotation; when people hear this word, it reminds them of a problem that did not go their way. Moreover, a myriad of people associate selfishness with childhood, it evokes unpleasant memories, in which they would rather forget, which is why some assume that selfishness is wrong and unhealthy. Nonetheless, selfishness does not always refer to destructive behavior. The word selfish, by definition, states “concerned excessively or exclusively with oneself: seeking or concentrating on one's own advantage, pleasure, or well-being without regard for others” ("Selfish”); however, this old definition needs to be revised. Although a plethora of people believe being selfish is a negative thing, it is not because being selfish is an act of self-love. Therefore, the old definition of the word selfish should change because being selfish does not necessarily mean being ‘stingy,’ it simply means selfishness is valuing one’s judgment and acting in one's interest despite others disagreement.