Why does PET use different isotopes than that of nuclear medicine exams with gamma cameras? What makes PET isotopes different?

Q: What are the modes of destruction and applications of the following agents: 1.Heat 2. Alcohol 3.…

A: The PHYSICAL METGODS of sterilization involve use of heat, filtration, radiation, desiccation and…

Q: Define briefly the term radioactivity.

A: Radioactive atoms contain energy that pours out spontaneously as energetic subatomic particles or…

Q: The most sensitive and reliable instrument for detectingand characterizing flammable residues is the…

A: Flammable liquids can be easily ignited in the air at ambient temperature. These are ethanol,…

Q: What is the best definition of radiation

A: Radiation can be defined as the emission and propagation of energy in the form of waves, rays or…

Q: When one uses Benedict’s reagent added to UNKNOWN samples taken and added (as a liquid) by a pipette…

A: Sugars capable of reducing ferric or cupric ions are called reducing sugars. All monosaccharides…

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: _____ kills pathogens and some spoilage organisms but does not sterilize substances. Tyndallization…

A: Sterilization refers to any process that removes, kills, or deactivates all forms of life, in…

Q: Four process that  may be used to refine oil

A: Refining of oil is an industrial process that involves the conversion of crude oil into useful…

Q: efine and identify specific Wells G&H case examples of the following: Chemical(s) of Concern…

A: The wells G& H site of 330 acre is located in Woburn in  Massachusetts. This site has two…

Q: Do you think rules and guidelines on laboratory safety and chemical handling are designed to hinder…

A: Laboratory handling and chemical handling is important for saving our life. Laboratory handling…

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: What are the two principal types of mass spectrometry?

A: Mass spectrometry is used to determine the mass-to-charge ratio of ions and separate them according…

Q: A. Match the following tests to the element or characteristics it identifies. Oxygen and Halogen…

A: There are various chemical tests to check the presence of certain compounds or substances. A…

Q: Why is it important to use radioisotopes in medicine?

A: Health is referring to a condition of complete physical, mental and social well being. Health is an…

Q: Which of the following is considered chemical control? O a. None O b. Heat, alcohols, ethylene oxide…

A: Chemical control is way to restricting the growth of pathogens. It is based on substances that are…

Q: Explain how the type of decay, the half life and the chemical properties make the following…

A: Asked : Type of decay, the half life and the chemical properties for the given application.

Q: What is “Autoradiography”? This method enables the determination of which macromolecule labeled with…

A: The techniques which provide images are useful in biological studies because they provide insight…

Q: What are the names of the elements that we can not analys

A: ICP-OES : Inductively coupled plasma-optical emission spectroscopy. It is an analytical technique…

Q: Electrostatic precipitators or wet scrubbers can be used to reduce pollution. O particulate matter…

A: Pollution caused by industrial activities and combustion is of great concern Various abatement…

Q: 42. Which of the following chemicals is a persistent organic pollutant, was first used on a wide…

A: A pollutant is a material that is present at levels that are harmful to organisms (people, plants,…

Q: What are the toxic responses of microwave radiation?

A: According to the question, we will discuss the toxic responses of microwave responses. So, let us…

Q: When preparing samples for SDS-PAGE, what is the purpose of boiling the samples at 95°C?

A: Electrophoresis is a laboratory technique used to separate and isolate desired nucleic acid…

Q: 430 rads of αα-particle radiation is equivalent to how many rads of X-rays in terms of biological…

A:

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: Direction: Match the following isotopes by tracing a line in column A to its uses in column B. Iron…

A: Isotopes are atoms of the same element that contain an identical number of protons, but a different…

Q: Explain the mechanism of denaturation for each agent: 1. Heavy metals 2. Organic solvents 3. Heat…

A: Proteins are important biopolymers present in living systems. They are involved in various…

Q: Food is often irradiated with either x rays or electron beams to help prevent spoilage. A low dose…

A: The equivalent and absorbed dose are equal for the x-rays RBE=1 a) To find the dose, 175 k rad=175 k…

Q: How can you use Uv-visible spectroscopy in qualitative and quantitive analysis of drugs? Please…

A: Different molecules are present in nature. Each molecule is made of the same or different atoms.…

Q: Why do we add powdered zinc to the nitrate reduction test?

A: Bacteria are prokaryotic simple unicellular organisms. Their mode of respiration may be aerobic or…

Q: What types of radiation would you expect to have the highest biological effectiveness factor?

A: Radiation is that the emission or transmission of energy within the kind of waves or particles…

Q: What are the three main classes of techniques used in nuclear medicine? Give an example of each.

A: The three main classes of techniques used in nuclear medicine are as follows : Vivo procedure…

Q: a 139 ng sample of radioactive material has a half life of 4.2 days how many ng of radioactive…

A: GIVEN: The initial mass of radioactive material = 139 ng Half-life =4.2 days Number of half lives= 3…

Q: Which of the following substances will dissolve Sudan iv?Explain why or why…

A: Sudan IV is a lipid soluble dye. It has reddish brown crystals and has hydroxy, azo functionalities…

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: The primary concern with using bleached paper products for food is: lead dioxin O methylmercury O…

A: The bleached paper appears white because it is bleached with chlorine in its processing at the end…

Q: What caused the environmental health problems that resulted from the incident? (Hint: emission of…

A: Radioactive pollution: increase of radiation in the environment due to human activities such as…

Q: The quality of essential oils has been tested using different methods including: (Select all that…

A: Chromatography is a laboratory method of separating the mixture into individual components. It…

Q: Which of these factors influences the radioactive decay measured by radiometric dating?…

A: Geologists use radiometric dating to estimate how long ago rocks formed and to infer the ages of…

Q: Define the following terms: a. radiationless decay b. P700 c. P680 d. c = λv e. UV

A: Introduction: Photosystems are the large complexes of proteins and pigments optimized to harvest…

Q: Two compounds have Rf values of 0.50 and 0.61, respectively. The solvent front on a plate is…

A: Chromatography technique is used to separate mixtures. In this technique, there are 2 phases,…

Q: TEST ONE: When one uses Benedict’s reagent added to UNKNOWN samples taken and added (as a liquid) by…

A: Biomolecules are organic compounds produced by living organisms. They play important function as…

Q: Alternative name for Moist-heat sterilization Select one: Oven sterilization Autoclaving Ionizing…

A: Sterilization is any technique that eliminates, removes, or disengages every living organism…

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: 11. 24000 bp? A. 8.33 B. 7.39 C. 8.41 D. 7.62 E. None of the above.

A: Gel electrophoresis is a standard molecular biology procedure used for the separation of DNA by its…

Q: The effect of fast neutrons compared to slow neutrons on the biological tissue is greater by

A: Answer: NEUTRONS = These are positively charged molecules present in the nucleus , It represents the…

Q: what are the other treatments on developing or improving a catalyst aside from like x-ray…

A: Catalysts can be any substance that accelerates the reaction rate without itself being consumed.…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.