2. The half-value layer of 140 keV y-ray of Tc-99m is approximately 0.03 cm of lead. Calculate linear attenuation coefficient of the lead for 140 keV photons and the lead needed to reduce exposure of point source of radiation by 70%.
Q: 17. A flask with a surface area of 25 cm2 can hold 15 mL of new media. O True O False
A: A conical flask is one of the routinely used laboratory equipment for scientific research. In…
Q: 3. The following absorbance spectrum was collected. What color is the sample solution? Explain using…
A: As you posted multiple questions, we are supposed to answer only question as per our guidelines.…
Q: Which factor makes the biggest difference when studying the effects of radiation on an organism? O…
A: Introduction :- Radiation is energy that originates from a source and travels at the speed of light…
Q: 14.22. Calculate the penetration depth of 100-MHz radiation in fat and in muscle.
A: Introduction: The tissue that stores fat in humans is called 'adipose tissue'. It is composed of…
Q: 13. Suppose that a person who has one hand in a uniform beam of x rays receives a dose of 90…
A: Radiations are used for diagnostic and treatment purpose both. Radiation is used very cautiously.…
Q: A cancerous tumour is exposed to an Q-emitter with an RBE of 12. What absorbec dose, in Gy, is…
A: Relative Biological Effectiveness RBE is 12 Effective does of 60 Sv Asked : Absorbed dose for the…
Q: The UV-Vis Spectroscopy technique is based on: A. Rotational excitation B. Nuclear excitation C.…
A: Spectroscopy is the branch of science which deals with the study of interaction of matter with light…
Q: µc of a radioactive material 100 injected in a patient. If its physical half life time is 4 days and…
A: Introduction half-life, in radioactivity, the interval of time required for one-half of the atomic…
Q: A prescription calls for 50 mg of chlorpheniramine maleate. Using a prescription balance with a…
A: Ans. Drug need for chorpheniramine maleate/ drug diluent mixture to use in chorpheniramine =…
Q: 2- Why must not the precipitate in iron determination be ignited at too high a temperature?
A: Precipitate of iron is iron (lll) hydroxide. They formed by in a test tube where iron is present…
Q: The magnesium electron spectrum has a line at 266.8 nm. Does it have a greater speed in a vacuum (an…
A: Electromagnetic radiation is a form of energy also known as light. Light travels at speed of 3,00,…
Q: 1.2 1.0 0.8 0.6 0.4 Beta-Su2021 0.2 0.0 3500 3000 2500 2000 1500 1000 500 Wavenumbers (cm-1)…
A: Infrared(IR) spectroscopy helps in the determination of various functional groups of an organic…
Q: 11
A: The three radioactive elements given in the question like 3H, 14C and 35S are small energy beta…
Q: 6 Gy of 250 kV x-rays kills 30% of tumor ells, and 4 Gy of a neutron beam kills the ame percent of…
A: X-rays are capable of destroying tumor cells by destroying the DNA of these cells and are used in…
Q: B The (Me2C3C%3DCM 2)Fe(CO)4 below -60 C shows three peaks in the intensity ratio 1:1:2 but at 30 °C…
A: The reference structure of this compound contains iron chelated with carbonyl groups along with the…
Q: THE RAYS WITH A WAVELENGTH OF 760-1500 nm ARE 1. visible part of the solar spectrum 2. short-wave…
A: The entire distribution of electromagnetic radiation according to frequency or wavelength is called…
Q: Why we must used calibrated dropper in preparing digoxin elixir?
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Assume that you list the following types of electromagnetic radiation in order of increasing…
A: Radiation refers to the energy that travels and spreads as it moves. The waves of the…
Q: A worker in a nuclear power station receives the following radiations while working in 1 year: 85mGy…
A: Introduction :- Radiation is energy that originates from a source and travels at the speed of light…
Q: (2) Express the normal human body temperature, 37°C, and the sun's surface temperature, ~6000°C, in…
A: So, for converting the degrees celcius to the degrees fahrenheit, the formula used is (x°C × 9/5)…
Q: (i) Define the Ramachandran plot (simply). (ii) Explain with one example (simply). (iii) how to…
A: Ramachandran plot is given by GN Ramachandran in 1963. This lot is used for the assessment of the…
Q: 6. If the y-intercept of a Lineweaver-Burk plot = 1.91 (sec/millimole) and the slope = 75.3 L/sec,…
A: From the Lineweaver Burk plot the following information is given that is 1.91 sec/millimole and the…
Q: If the differences between the expected and observed values are large, the chi-square value will be…
A: Chi-square is a statistical method that examines the disparities between categorical data from a…
Q: 1. If 5000 Joules of energy are released in a 100mA, 1 second exposure, the tube potential is a. SKV…
A: We are answering First 3 questions For rest of questions pls repost.
Q: In a nuclear waste management accident, alpha particles with an RBE of 19.0 deliver a dose of 0.0940…
A: Biological equivalent dose (BED) is the dose that causes biological damage based on the absorbed…
Q: tarting from u = (U – TS+ pV)/n, show that, for an ideal gas, R/cv S – nR° (S – nso exp nvo µ(S, V,…
A:
Q: 1. Convert the following measurements: Imm 1000um a 92 mm b. 5900 um mm
A: DISCLAIMER: Since you have asked multiple question, we will solve the first question for you. If you…
Q: 6. Assume that you have an “X" solution that you do not know its concentration. But you have other X…
A: The spectrophotometric methods is used to measure the absorbance of a sample by measuring the…
Q: 6, If Mr. Strong is admitted to the hospital and administered Buprenex, how much will you draw up in…
A: Dose : It is defined as the amount of medicines that has to be taken orally or intravenously is…
Q: wavelength? A.Infrared B.Ultraviolet C.Visible Light D.X-Ray 2.Which of the following…
A: Infrared wavelength 700 to 800 NM Ultraviolet wavelength 100 to 400 nm. Visible light wavelength 400…
Q: At room temperature, if AH = -10 and AS = 100 %3D Then AG is O a) zero O b) spontaneous O c)…
A: Gibbs free energy refers to the chemical energy associated with the reaction that is used to do…
Q: In a reverse phase chromatography set up, the component that yields the lowest Rf value is likely to…
A: Reverse-phase chromatography: The chromatographic technique uses the hydrophobic stationary phase in…
Q: 27) A biological tissue of mass m is exposed to 60 rad of alpha radiation. How many rads of slow…
A: A "nucleic acid" is a linear polymer of nucleotides that is a component of the cell's information…
Q: GIVEN: Centrifuge A: rotor radius 5 cm; max. speed - 4,000 xg Centrifuge B: rotor radius - 7 cm;…
A: Pellet Pellet is the hard accumulation of material present at the bottom of the centrifuge tube.
Q: 100 µc of a radioactive material injected in a patient. If its physical half fife time is 30 days…
A: Half live (t1/2) of a radioactive material is the amount of time taken for the activity of the…
Q: 1.What is not associated with increased skin cancer a. Arsenic b. Coal tar derivatives c.…
A: Since you have asked multiple questions, we will answer only the first question for you. If you want…
Q: 1. What is the chemical basis of Molisch test?
A: Carbohydrates are biomolecules that consists of carbon, hydrogen, and oxygen. They are hydrated…
Q: Define the terms below i. Radioisotope ii. Decay series iii. Radioactive decay energy and its units…
A: 1. Radioisotope: It is an unstable form of a chemical element that releases radiation as it breaks…
Q: GIVEN: Centrifuge A: rotor radius - 5 cm; max. speed - 4,000 xg Centrifuge B: rotor radius - 7 cm;…
A: Centrifuge is a device used for separating molecules having different densities. The process is…
Q: 5. n5° of 2-chloro-2-methylpropane is 1.3850. If a 1 g sample of 2-chloro-2-methylpropane was…
A: * = it is indicating the sign of multiply (✖)
Q: 5. a) How many vibrational normal modes does HCN have? b) How many peaks (not counting the fine…
A: Different types of spectroscopy can be used to identify the structure of the unknown compounds. Some…
Q: 3. a. Write the hypothesis the doctor was investigating with this test. Answer: b. What was the…
A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…
Q: The image shows a whole body bone scan using MDP (mono-diphosphonate) labelled with technetium-99m.…
A: The half-life period of a radioactive compound is the time required for half of its components to…
Q: Find the approximate radiation dose (in mSv) for 0.1 Gy exposure to thermal neutrons. (Hint:…
A: A gray (Gy) is the SI-derived unit of absorbed dose and specific energy (energy per unit mass) A…
Q: A1 gm sample containing CaCO3 was burned so that all C03 was released from the model. If the…
A: Total sample = 1gm Weight after firing = 0.560 gm Amount of calcium carbonate present in 1gm = 1-…
Q: 2. Imagine you have mixed the following known concentrations of a solution. You then measured their…
A: A standard curve or a calibration curve is a graph plotted against absorbance of known concentration…
Q: A. 29 mGy 42. A patient received a full-body gamma ray dose of 26 rad, a neutron dose (22 MeV) of 88…
A: The limit of annual effective dose is 1mSv in some countries like canada. Effective dose is…
Q: 7. A worker receives a dose of 7.8 mGy to his lungs from an inhaled al- pha emitter, and a uniform,…
A:
Q: If a hospital were storing radioisotopes, what is the minimum containment needed to protect…
A: A matter is made of fundamental material called an element. A chemical element comprises only one…
need help. Radiation Biology
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A drug has a measured diffusivity of 5*10^-6 cm^2/s^-1 at 37 degree Celsius. What is this drug’s Stokes-Einstein radius in nm?What is the dose in mSv for 2.5 mGy of neutron exposure to the eye?In UV/Visible spectrophotometer analysis for a multicomponent system, there are only two dyes used in the mixture, the two proportions should be totalled to 1.0. but on finding You got 0.6 in total. Explain the reasons for the difference.
- For the same chromatographic column and experimental conditions Rs when H = 3 cm = Rs when H = 5 cm Rs when H = 3 cm > Rs when H = 5 cm Rs when H = 3 cm < Rs when H = 5 cm The two quantities cannot be compared due to insufficient information.1.0 ml of serum albumin (BSA) solution was precisely diluted to 100 ml with a buffer solution, and the absorbance at 280 nm was measured from this buffer solution at a distance of 1 cm from the light. The result was A=1.0. BSA is 0.1%(=0.1g/l). The absorptivity is e(0.1%)=0.667, so 1g/l solution gives an absorbance of 0.667. What was the original protein content? Report in the result unit mg/ml with an accuracy of 0.1 mg.What is the HVL of tissue for 1.25 MeV gamma-rays. How many half-layers of tissue are in the human forearm (assume an average thickness of 10 cm of tissue). What is the reduction in intensity as a 1.25 MeV gamma-ray passes through 10 cm of tissue? Assume the density of tissue is 1 g/cm2.
- A sample to be used for medical imaging is labeled with 18F,which has a half-life of 110 min. What percentage of the originalactivity in the sample remains after 300 min?Both spotlights SPOTLIGHT#1 and SPOTLIGHT#2 are place at 20 meters from the stage. You want to produce a circle of light of 1 meter diameter with the SPOTLIGHT#1and a circle of light of 2 meters diameter with the SPOTLIGHT#2explain the results of this experiment Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151
- If 6 Gy of 250 kV x-rays kills 30% of tumor cells, and 4 Gy of a neutron beam kills the same percent of tumor cells, the RBE of the neutron beam is equal toFind the approximate radiation dose (in mSv) for 0.1 Gy exposure to thermal neutrons. (Hint: relative biological effectiveness for various types of radiation can be found in Table 32.2 in the text.) A range of answers is acceptable.Why is control of column and detector temperature more important for non- suppressed IC (Ion Chromatography) than it is for suppressed IC?