Orders of magnitude

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  • Elekta Synergy S Linear Accelerator Lab Analysis

    Dmax and 40 % of a maximum dose. Then in-line and cross-lines profiles are measured at these depths, and the position of the 50% level was determined for these profiles. The positions of the 50% for the profiles are compared and the offsets are then displayed. 3.3.2.2 Voltage Diode and micro-diamond detectors are semiconductor detectors thus no voltage is applied, CC01 required 300 volts to allow for optimal data collection. 3.3.2.3 Dose rate The CC01 and micro-diamond have little or no dose rate independence, but the diode does exhibit dose rate dependency. The LINAC ran stable at a dose rate of 400 MU/min, thus all the measurements were recorded at this rate for the diode. 3.3.2.4 Beam profiles, PDD and output factors There is a certain order in which the data were collected prior to changing the field size. The reason for beam profiles being scanned first allows for checking the centre of the fields, especially important for the 1×1 cm² field. The location of the centre changed due to the movement of the flattening filter as LINAC energy changed from 10MV to 15MV. This was corrected for by moving the detector to the centre of the field using the offsets seen on the beam profiles for the PDD and output factor measurements when measuring the 1×1 cm² field. The measurements were performed using a single detector within the field, as opposed to the two detector method that is regularly used. The two detector method employs the use of a field and a reference detector. The…

    Words: 1563 - Pages: 7
  • Tension Force In A Toy Car Experiment

    measuring the maximum horizontal distance much easier by being able to slow down the collision. Place the toy car at the top of the track and let go of the toy car. The car will begin to go down the track because of acceleration due to gravity. The car will collide with the spring and cause the spring to bend some horizontal distance. Repeat this process two additional times for a total of three attempts. After the three attempts have been completed, use the force sensor and the Capstone ®…

    Words: 1265 - Pages: 6
  • Amount Of Light On Sowbugs

    The Effect of the Amount of Light on Sowbugs After Being Shone on Them for 30 Seconds Another name for Sowbugs is Porcellio Laevis and these creatures are land living crustaceans, mostly aquatic invertebrates, such as the lobster, crab, and crayfish. They are found in most parts of the world, but are most common throughout North America. Since sowbugs are crustaceans, they breathe through gills. Gills are the primary breathing way for all crustaceans and they must be kept moist (4). In addition,…

    Words: 1961 - Pages: 8
  • Essay On T3 Test Hole

    Introduction The purpose of this assignment was to determine whether a site located on LIT Tipperary’s Thurles campus, was suitable or not for an onsite wastewater treatment system. The assessment onsite predicts the wastewater flow through the subsoil and into the subsurface materials if a wastewater treatment system was to be put in place (EPA, 2009). The site characterisation process our class used is only applicable to a single house. I was assigned to the T3 test hole. The result in the…

    Words: 1835 - Pages: 8
  • Analysis: Should College Student Athletes Be Paid

    Being a broke college student isn’t fun. Being a broke college athlete is worse. Broke college students aren’t just needing the money but they need the balance of time, work, and study also. No college student, let alone student athletes would ever turn down the thought of being paid for their services. So why isn’t the NCAA trying to help our college athletes out? College isn’t cheap. College students have financial obligations outside of the classroom; being on scholarship does not lighten the…

    Words: 1019 - Pages: 5
  • The Importance Of The Scale Of Chemistry

    in a scientific measurement, it is important to consider both the size and type of measurement being made. For example, if one wants to discuss the length of a chemical bond in a molecule, one would use a distance unit. Since atoms are very small, it is convenient to use units such as pm (1 pm = 10−12 m) and Å (1 Å = 10−10 m). On the other hand, if one wishes to discuss the distance from Atlanta to New York, it may be more useful to use units such as m or km. If one wishes to describe the…

    Words: 2398 - Pages: 10
  • Roles And Term Impacts Of C & R Supermarket

    The impact of decision making plans can be crucial to the success of a organization’s success or even demise. This varies with thought provoking people contributing to the success of the overall goal of the organization. C & R Supermarket’s objectives of quality, customer satisfaction and revenue can only come to fruition when all obstacles are weighed against the strategies and tactics of both the employees and management. Roles Roles will continue to remain the same even though there is cross…

    Words: 775 - Pages: 4
  • The Effect Of Distance On Acceleration Of Motion

    A ball, and a feather dropped at the same height will hit the ground at the same time when placed in a vacuum space. This is because acceleration of motion is the same for both object, and in this experiment, we are going to calculate accelerated motion using inclined planes. In this experiment, we will see whether “distance traveled is directly proportional to the square of the time”, and “if speed of a falling object depend only on the height from which it falls”. This experiment will give us…

    Words: 1575 - Pages: 7
  • Galveston Ship Channel Recruitment Report

    Recruitment of Organisms in the Galveston Ship Channel Abstract A study was done in the Galveston Ship Channel to see the recruitment of sessile or fouling organisms to a substrate. A total of six organisms were found. They were Barnacles, Serpulid Worms, Bryozoan, Limpets, Tunicates, and Amphipods. Recruitment structures were created by the students and were put into the Galveston Ship Channel and left for five weeks to allow adequate time for organisms to adhere to it. A full mesh cage was…

    Words: 1543 - Pages: 7
  • Essay On Bolus

    these results did not happen by chance. The large F value of 762.65 shows the large differences between the groups, while the P value of less than 0.0001 demonstrates that the bolus materials have different Dmax’s. Conclusion The purpose of the experiment is to close the gap of information between Superflab and the alternative bolus materials and the results help answer the question of which bolus material is best to use in radiation therapy. The results from this study are consistent with…

    Words: 1472 - Pages: 6
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