Which type of radiation is most likely to be used for isotope scanning?(a) alpha(b) beta(c) gamma
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Which type of radiation is most likely to be used for isotope scanning?
(a) alpha
(b) beta
(c) gamma
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- (I) Why the physicochemical changes in liquid water caused by radiation is the key to understanding the biological effects of radiation? Please give a short, one-sentence explanation. (II) Name the three key stages of the physicochemical changes produced in liquid water due to radiation. (III) Briefly describe the three key stages. A one- or two-sentence explanation for each of the three key stages would be sufficient.Assume that you list the following types of electromagnetic radiation in order of increasing wavelength: () the gamma rays produced by a radioactive nuclide used in medical imaging: (ii) radiation from an FM radio station at 93.1 MHz on the dial; (iii) a radio signal from an AM radio station at 680 kHz on the dial; (iv) the yellow light from sodium vapor streetlights; (v) the red light of a light-emitting diode. Which one would be the second? Lütfen birini seçin: O a 680 kHz AM radio waves O b. the red light O c the yellow light O d. 93.1 MHz FM radio waves O e the gamma raysIf a hospital were storing radioisotopes, what is the minimum containment needed to protect against:(a) cobalt-60 (a strong γ emitter used for irradiation)(b) molybdenum-99 (a beta emitter used to produce technetium-99 for imaging)
- Justify and explain following statements. (a) Paper chromatography is a type of partition chromatography. (b) The R f value is 1. (c) Chromatography is only a qualtitative technique. (d) The adsorbent should be insoluble in the solvent. (e) Chromatography is used to separate only color compounds.The distance between k and e would be approximately... a) 6.25 cM b) 6.6 cM c) 4.65 cM d) 5.0 cM e) 11.65 cMQ7) A biological tissue of mass m is exposed to 90 rad of alpha radiation. How many rads of slow neutrons can cause the same biological damage to the same tissues? (For alpha RBE=20, for slow neutrons RBE = 5). A) 20 B) 100 C) 90 D) 360 E) 1800 Crodius r
- (4) The normal melting point of gold is 1064.5 °C and its boiling point is 2660 °C. (a) Convert these two values to the Fahrenheit and Kelvin scales. (b) Find the difference between those two values in Celsius. (c) Repeat (b) using the Kelvin scale.Mobile phase can be : A) Solid or liquid B) Only solid C) Only gas D) Liquid or gasIf there is 10 μmol of the radioactive isotope 32P (half-life 14 days) at t = 0, how much 32P will remain at (a) 7 days, (b) 14 days, (c) 21 days, and (d) 70 days?
- The half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. s-1 (c) Convert 0.550 µCi to the SI unit the becquerel. |Bq (d) Find the number of 1311 nuclei necessary to produce a sample with an activity of 0.550 μCi. | 1311 nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity at the end of that period. (Enter your answer for the number of half-lives to at least one decimal place.) half-lives mCi32) The below given characterization data belong the .. ? CacO.HO CaC,0,. H0 100C CaC0, + H0 1 a) X-ray Spectroscopy b) Infrared spectroscopy c) Atomic Force Microscopy d) Thermogravimetric Analysis Cac O 100'C CaCo. 840 C 226°C 346°C 980'C! 660 c Cao 420°C Temperature ("C) 33) Which one the below given responses are not among the Acute inflammation responses? a) Extensive collagen synthesis b) Phagocytosis c) Neovascularisation d) Framework Intact 34) Biomaterials surface coatings are applied to improve the implant integration to body. Sort the adherences of different coating techniques to surfaces from poor to good adherence and also according to thickness.Ionizing radiation does NOT include A) gamma rays. B) UV rays. C) X-rays. D) cosmic rays.