1.- Electrical properties of biological tissues. 2.- Permittivity and its physical meaning 3.- Conductivity and its...
1.- Electrical properties of biological tissues.
2.- Permittivity and its physical meaning
3.- Conductivity and its physical meaning
4.- Dispersion factors and their interpretation
5.- Relationship of the electrical properties of biological tissues and cancer in tissues.
Homework Answers
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1.- Electrical properties of biological tissues.
2.- Permittivity and its physical meaning
3.- Conductivity and its...
2. (a) Consider the propagation of a plane electromagnetic wave in a conductor. Show that the wav...
2. (a) Consider the propagation of a plane electromagnetic wave in a conductor. Show that the wavenumber, k, as a function of a, is given by the dispersion relationship ex ωε ωε where σ is the conductivity, μ is the permeability and ε is the permittivity of the conducting medium. (Hint: start with Maxwell's equations, and develop an equation of the form, V" E -k 2 E ). (3 marks) (b) Write down an expression for the physical electrical field...
The biological outcomes of immune system recognition can include: 1) Migration of leukocytes into infected tissues...
The biological outcomes of immune system recognition can include: 1) Migration of leukocytes into infected tissues 2) Clearance of a pathogen by an activated macrophage 3) Promotion of optimal antigen presentation 4) Induction of long-lived B and T cells 5) All of the answers are correct The end results of signal transduction are varied but can include: 1) Induction of cell division 2) Cellular differentiation 3) Altered metabolism 4) Altered protein secretion patterns 5) All of the answers are correct
Problem 7.036 A long, cylindrical, electrical heating element of diameter D = 10 mm, termal conductivity...
Problem 7.036 A long, cylindrical, electrical heating element of diameter D = 10 mm, termal conductivity k = 240 w/m·K, density ρ = 2700 kg/m3, and specific heat cp-900 נ/kg-K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 20 m/s, respectively (a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of...
Question 2 Match the best response. liquid [Choose) physical properties [Choose) chemical reaction [Choose] atomic symbol...
Question 2 Match the best response. liquid [Choose) physical properties [Choose) chemical reaction [Choose] atomic symbol [Choose] element [Choose solid [Choose) gas [Choose) physical change [Choose The chemical identy is altered. Color, density, conductivity are examples. Element's abbreviation Matter determined by its volume and shape. change where the physical properties are different but the chemical properties remain the same. A fundamental building block. Has a definite volume but shape is determined by the container. Fills that space available to it....
The electric capacitance of biological tissues serves as the basis for numerous medical technologies. For example,...
The electric
capacitance of biological tissues serves as the basis for
numerous medical technologies. For example, dielectric
spectroscopy glucose reading (DSGR) is a noninvasive
diagnostic technique that uses the electric capacitance of blood to
estimate blood glucose levels.
A DSGR device records
the electric current that results from applying a voltage source to
the skin and underlying blood vessels. DSGR can be modeled by the
circuit shown in Figure 1, in which V represents the applied
potential, CB represents the...
5. Problem 3.54 (Textbook) (20 points) KNOWN: Diameter of electrical wire. Thickness and thermal conductivity of...
5. Problem 3.54 (Textbook) (20 points) KNOWN: Diameter of electrical wire. Thickness and thermal conductivity of rubberized sheath. Contact resistance between sheath and wire. Convection coefficient and ambient air temperature. Maximum allowable sheath temperature. FIND: Maximum allowable power dissipation per unit length of wire. Critical radius of insulation. SCHEMATIC: Air Wire Egen. D-2 mm Two Tini Tino To Ric = 3x10-4 m2-KW Insulation, t = 2 mm T= 20°C Ric Rcond conv k = 0.13 W/m-K Tmax = 50°C h...
Chapter TEN: Living with Cancer and other Chronic Diseases Questions: 1. What properties do cancer cells...
Chapter TEN: Living with Cancer and other Chronic Diseases Questions: 1. What properties do cancer cells possess that are lacking in normal cells? 2. What are the principal factors that contribute to the development of lung cancer? 3. What are the principal factors that contribute to the development of breast cancer? When should regular mammography begin, and which women should begin using it earliest? 4. What are the risk factors, symptoms and treatment for testicular cancer? 5. What signs indicate...
The electric capacitance of biological tissues serves as the basis for numerous medical technologies. For example,...
The electric capacitance of biological tissues
serves as the basis for numerous medical technologies. For example,
dielectric spectroscopy glucose reading (DSGR) is
a noninvasive diagnostic technique that uses the electric
capacitance of blood to estimate blood glucose levels.
A DSGR device records the electric current that results from
applying a voltage source to the skin and underlying blood vessels.
DSGR can be modeled by the circuit shown in Figure 1, in which V
represents the applied potential, CB represents the...
The physical properties of polymers depend on which of the followings: 1. average molecular mass of...
The physical properties of polymers depend on which of the followings: 1. average molecular mass of a chain 2. the strength of intermolecular forces 3. the reaction temperature during synthesis 4. the degree of crystallinity 5. the reaction pressure A) 1,2 and 4 B) 2,3 and 4 C) 1,2 and 5 D) 3,4 and 5 E) 2,4 and 5
1. State the spatial part of Sehrodinger's equation for one dimension (x) and explain the physical...
1. State the spatial part of Sehrodinger's equation for one dimension (x) and explain the physical 2. Consider a quantum well with finite potential walls. Can the measured energy of an electron 3. If the energy of the electron is lower than the potential wall, V(x), can the electron be found 4. Explain the effective mass of electrons in semiconducto crystals with respect to the E vs k meaning of each term. inside the well be zero? Explain your answer...
2. (a) Consider the propagation of a plane electromagnetic wave in a conductor. Show that the wavenumber, k, as a function of a, is given by the dispersion relationship ex ωε ωε where σ is the conductivity, μ is the permeability and ε is the permittivity of the conducting medium. (Hint: start with Maxwell's equations, and develop an equation of the form, V" E -k 2 E ). (3 marks) (b) Write down an expression for the physical electrical field...
Problem 7.036 A long, cylindrical, electrical heating element of diameter D = 10 mm, termal conductivity k = 240 w/m·K, density ρ = 2700 kg/m3, and specific heat cp-900 נ/kg-K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 20 m/s, respectively (a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of...
Question 2 Match the best response. liquid [Choose) physical properties [Choose) chemical reaction [Choose] atomic symbol [Choose] element [Choose solid [Choose) gas [Choose) physical change [Choose The chemical identy is altered. Color, density, conductivity are examples. Element's abbreviation Matter determined by its volume and shape. change where the physical properties are different but the chemical properties remain the same. A fundamental building block. Has a definite volume but shape is determined by the container. Fills that space available to it....
The electric
capacitance of biological tissues serves as the basis for
numerous medical technologies. For example, dielectric
spectroscopy glucose reading (DSGR) is a noninvasive
diagnostic technique that uses the electric capacitance of blood to
estimate blood glucose levels.
A DSGR device records
the electric current that results from applying a voltage source to
the skin and underlying blood vessels. DSGR can be modeled by the
circuit shown in Figure 1, in which V represents the applied
potential, CB represents the...
5. Problem 3.54 (Textbook) (20 points) KNOWN: Diameter of electrical wire. Thickness and thermal conductivity of rubberized sheath. Contact resistance between sheath and wire. Convection coefficient and ambient air temperature. Maximum allowable sheath temperature. FIND: Maximum allowable power dissipation per unit length of wire. Critical radius of insulation. SCHEMATIC: Air Wire Egen. D-2 mm Two Tini Tino To Ric = 3x10-4 m2-KW Insulation, t = 2 mm T= 20°C Ric Rcond conv k = 0.13 W/m-K Tmax = 50°C h...
Chapter TEN: Living with Cancer and other Chronic Diseases Questions: 1. What properties do cancer cells possess that are lacking in normal cells? 2. What are the principal factors that contribute to the development of lung cancer? 3. What are the principal factors that contribute to the development of breast cancer? When should regular mammography begin, and which women should begin using it earliest? 4. What are the risk factors, symptoms and treatment for testicular cancer? 5. What signs indicate...
The electric capacitance of biological tissues
serves as the basis for numerous medical technologies. For example,
dielectric spectroscopy glucose reading (DSGR) is
a noninvasive diagnostic technique that uses the electric
capacitance of blood to estimate blood glucose levels.
A DSGR device records the electric current that results from
applying a voltage source to the skin and underlying blood vessels.
DSGR can be modeled by the circuit shown in Figure 1, in which V
represents the applied potential, CB represents the...
1. State the spatial part of Sehrodinger's equation for one dimension (x) and explain the physical 2. Consider a quantum well with finite potential walls. Can the measured energy of an electron 3. If the energy of the electron is lower than the potential wall, V(x), can the electron be found 4. Explain the effective mass of electrons in semiconducto crystals with respect to the E vs k meaning of each term. inside the well be zero? Explain your answer...
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