Long interspersed nuclear elements (LINEs) (also known as long interspersed nucleotide elements or long interspersed elements) are a group of non-LTR (long terminal repeat) retrotransposons that are widespread in the genome of many eukaryotes. They make up around 21.1% of the human genome. LINEs make up a family of transposons, where each LINE is about 7,000 base pairs long. LINEs are transcribed into mRNA and translated into protein that acts as a reverse transcriptase. The reverse transcriptase makes a DNA copy of the LINE RNA that can be integrated into the genome at a new site.
The only abundant LINE in humans is LINE1. The human genome contains an estimated 100,000 truncated and 4,000 full-length LINE-1 elements. Due to the accumulation of random mutations, the sequence of many LINEs has degenerated to the extent that they are no longer transcribed or translated. Comparisons of LINE DNA sequences can be used to date transposon insertion in the genome.
HALP! I have already killed a forest trying to work this one out on paper.
Homework Statement
a. Use Implicit differentiation to find the equations of the horizontal tangent lines to the parametric equation: yx^3-2x^2y^2+xy^3=192.
b. Use Implicit differentiation to find the equations...
Dear all,
I have recently read the effects of T-duality of both closed and open strings (Zwiebach 2009, Johnson 2003) and found it very interesting indeed. However, I found it difficult to understand the concept of Wilson lines. Could someone please explain me the idea and concept of Wilson...
Homework Statement
Find the point of intersection of two lines
x = -9 + 5t
y = 1 + t
z = 10 - 4t
and
x = -2 -3t
y = 5 + 2t
z = 5 + 3t
Homework Equations
N/A
The Attempt at a Solution
I have read that you should set two of the equations equal to find the value of t, and...
Homework Statement
The figure shows the interference pattern on a screen 1.0 m behind a diffraction grating. The wavelength of the light is 600 nm. How many lines per millimeter does the grating have?
Homework Equations
lines/mm = 1/ distance between slits
The Attempt at a...
Hi, can anyone tell me, how to make the lines in a legend more legible (or larger)?
When I am making a legend, the colored lines are too faint, so that I can't see what they refer to.
Thank you,
Juliane
I understand the concept of electric field lines but don't understand the interaction with the equipotential lines. I understand that along each equipotential line/surface that there is no change in potential energy. I also understand the field lines need to cross perpendicularly with the...
Hy Guys
I want to create some lines. That lines should be created by the solution of an equation. This equation has in my limits 1 or 2 solutions. The first euation is a circle.
The second is a line.
lineslope, radius, lineshift1, lineshift2 is defined before.
sol = Table[
NSolve[{radius^2...
1.Consider the two straight lines:
2λi+(1+4λ)j+(3-3λ)k
(4+μ)i+(3+5μ)j+(-6+μ)k
a) Show lines are skew when a=3.
b) Find value of a for which lines intersect and state coordinates of point of intersection
2.
2λi+(1+4λ)j+(3-3λ)k=(4+μ)i+(3+5μ)j+(-6+μ)k
comparing i components:
(1)...
Homework Statement
The number of lines from A to B if you must travel along the lines going up and right is...
(there is a rectangle with that has 4 cubes going down vertically and 7 horizontally (4x7) and a is at the bottom left, be is at the top right)
Homework Statement
Question: Determine the equations of both lines that are tangent to the graph of f(x) = x2 and pass through point (1,-3).
Homework Equations
Some of the equations that I could use for this problem are:
y-y1=m(x-x1) (Point-slope Equation)
the derivative of the...
I live in India . I have Three Phase Line in my Home & Single Phase Line in Office . However the rates for both Single Phase & Three Phase are the same ( Rs.2.70/unit for first 50 units , Rs. 3/unit for next 50 , Rs. 3.60/unit for next 100 , Rs. 4.20/unit for next 100 & Rs.4.70/unit thereafter )...
The magnetic field surrounding a bar-magnet (for example) is continuous. The lines that are drawn to depict the strength and direction of the field don't actually exist. They are akin to drawing contours on an OS map, are they not? What therefore explains the behaviour of iron filings when...
I'm just a little confused about field lines.
I have sketches of equipotentials and I'm supposed to draw the field lines on them. The one I'm looking at is a dipole with a floating electrode in the middle of the positive and neutral charge. The positive is 12V, and the floating point is 6V...
Homework Statement
Suppose T is a Mobius map take Real -> Real and infinite infinitely to 0
a) What's the image of the family of lines parallel to Real?
b) What's the image of the family of lines perpendicular to Real?
c) Show the Mobius map take D = {z :|z|<1} onto itself iff Tz =...
Homework Statement
Give the equation of the two lines through the point (-1, 3) that are tangent to the parabola y= x^2
Homework Equations
The Attempt at a Solution
OK here is the question.
Find an equation of the plane that contains the lines given by
(x-1)/-2 = y = z+1
and
(x+1)/-2 = y-1 = z-2
This is what I did.
I found 2 points for the first line and 2 points for 2nd line
A= (0 , 0.5, -0.5)
B=(1 , 0 , 1)
C= (0, 0.5, 1.5)
D= (1, 0, 1)
then i...
Homework Statement
Find an equation of the plane that contains the lines given by:
(x-1)/-2 = y - 4 = z and (x-2)/-3 = (y-1)/4 = (z-2)/-1
The Attempt at a Solution
Not too sure about how to go about it. I believe these are the parametric equations for the lines:
x = 1-2t...
Homework Statement
do the lines (x,y,z) = (5+2t, 3+2t,1-t) and (x,y,z) = (13-3r, 13-4r, 4-2r) intersect? If so, at what point? If not, how do we know?
Homework Equations
The Attempt at a Solution
I just do not know where to begin...
I mean what do you do with the variables t...
If the electric field at a point drops off in intensity as the inverse ratio of the square of distance from the source, how do power lines manage to carry current through such large distances?
A very simple and noob question, sorry for this.
Looking at http://en.wikipedia.org/wiki/Perpendicular I found that two lines are perpendicular if and only if the product of their slopes is -1.
If I have two lines described by the following equations:
y = ax + b
g = cx + d
then...
In a uniform electric field, where 2 plates are placed horizontally and are parallel, the electric field is vertical..
What about the equipotential lines? Are they horizontal?Also, I need to draw a graph of how the Force on an electron varies with the distance from the bottom plate, and this is...
Gravitational "lines of force" for two equal point masses?
Homework Statement
"Sketch the gravitational "lines of forces" for two equal point masses. These are isomorphic to the electrostatic lines of force of
A. Two equal "+" point charges.
B. No pair of point charges separated by the same...
Hello.
I am watching this video:
https://www.youtube.com/watch?v=xIQtnQ9XPbE
and he says there:
I see that the wave turns into a "normal" sinus in the end, but it's not constant.
I think, that even on an unmatched transmission line, the waves should go back and forth, but eventually...
Homework Statement
Find two straight lines that are perpendicular to y=0.25x and tangent to the curve f(x) = 1/x.
Homework Equations
y=0.25x
f(x) = 1/x.
The Attempt at a Solution
What I did was equate y and f(x) and determined when they equal which is 2 and -2. The points are (2, 1/2) and...
Hi. I'm a student in AP Physics this year and we started the E&M portion this week and we learned about electric fields.
I was watching MIT's OpenCourseWare in order to get more comfortable with the concepts. The lecturer said that charges do not follow electric field lines because of the...
So I'm doing some programming, and to simplify a very large amount of if statements, I've decided to put it down to a few lines with a simple equation, I've done this before with other things, but it was very much trial and error.
Therefore I'd like to see how it can be done in a more...
While there is a lot of information on the internet concerning charged particles in a magnetic field, there is very little on the motion of an uncharged ferromagnetic object in the magnetic field of a permanent magnet.
I only found one animation of an uncharged object in the magnetic field of...
This is a question I am stuck on and id really like some help pleasezzz !
Two straight lines are given by the equations:
R= 17i -9j+9k +a (3i+j+5k)
R=15i - 8j - k + b (4i + 3j )
where a and b are scalar parameters.Show that these lines intersect and find the postion vector of their...
Could anyone help solve a problem how to find absorption lines in hydrogen atom from n=10 (n - principal quantum number). I know that not all quantum jumps of an electron in atom are possible, thus I don't know how many different emission lins will be from this energy level where n=10.
Homework Statement
What is the shortest distance between these two lines?
L1:(x,y,z)=(4,−2,−2)+t(1,1,−3)
L2: The line through the points (−2,−2,0) and (−4,−5,0)Homework Equations
distance formulaThe Attempt at a Solution
I thought I was on the right track but apparently not.
For L1, I took 2...
Homework Statement
A planetary nebula is larger when imaged in H\alpha than when observed in a Helium line, Why?
Homework Equations
The Attempt at a Solution
I understand that a planetary Nebula gives an emission spectrum and that If the nebula looks larger in a H line there is...
I've long understood that voltage is stepped-up in power t-lines to decrease losses, however, I've never really understood the math reasoning behind it.
Isn't P = V^2/R the same as P = I^2*R? If so, it seems that either increasing V or increasing I would invoke the same losses... Could...
Homework Statement
The spectral lines of the light from distant galaxies exhibit a Doppler redshift due to
the motion of the galaxy away from our own. For a particular galaxy, three spectral
absorption lines are observed from the Earth to have wavelengths of 164.4 nm 168.4 nm
and 177.5 nm...
I had set up an inductive and capacitative ladder network to model a coaxial cable( or low pass filter)- 20 sections of L= 0.1 H and C=0.11 microF
That works out as a characteristic impedance of 953ohms.
The circuit starts at a signal generator, then 5ohms resistor before the low pass...
Homework Statement
Find an equation for the plane containing the lines:
x-3= 4t , y-4 = t, z-1 = 0
x+1 = 12t, y-7 = 6t, z-5 = 3t
The Attempt at a Solution
I found the equations of both lines.
First line:
(3, 4, 1) + t(4, 1, 0)
(-1, 7, 5) + t(12, 6, 3)
Now I take the cross...
Homework Statement
Find a and b such that the point (a,b,0) lies on the line passing through (-1,-1,6) and (-9,7,2)
Homework Equations
Basic line equations, from P to Q= Q-P..etc
The Attempt at a Solution
I keep getting the wrong answer, but I got a point at exactly P (-1,-1,6)...
Does the strength of a magnetic field become weaker at a constant rate the further you get away from it? I ask this question for two reasons.
1 - When iron filings are placed on a piece of paper and and a magnet is placed under it, there are definite lines of magnetic force visible that...
Do commands want to life in trees? I just found out that I have to write 20 lines of SCPI to use a Keithley over GPIB. (Please don't mention Labview as it gives spaghetti code a completely new meaning).
Does anyone else think that SCPI stinks of zealous bureaucrats? Do people like it because...
Dear all,
Is there a single line way of using bash to take a file "filename" and display the line numbers of any blank lines within that file?
Thanks,
Natski
I'm not sure but I found this...
[When an electron makes a transition from one energy level to another, the electron emits a photon with a particular energy. These photons are then observed as emission lines using a spectroscope. The Lyman series involves transitions to the lowest or ground...
For a field of 15 T, I calculated the magnitude of the splitting, which was 1.391E-22 J (this is delta E), i.e.
delta E = |e| / 2m hbar B_z (m2 - m1)
where m2 and m1 are the m_l levels.
In order to determine the spacings for the visible lines on the absorption spectra, will that just be...
Homework Statement
find the equation of the plane that contains the line r_1(t) = (t,2t,3t) and r_2(t)=(3t,t,8t)
Homework Equations
The Attempt at a Solution
i don't know where to start...my book does not have an example similar. can somebody just point me to the right direction?
Homework Statement
Find the equations of both the tangent lines to the ellipse x2 + 9y2 = 81 that pass through the point (27, 3).
One is horizontal the other is not.
Homework Equations
The Attempt at a Solution
horizontal, easy: y = 3
x^2+9y^2=81
derivative:
2x +...
Hi I'm trying to build a permanent magnet alternator with a different approach than usual. Most PMAs have a ring of magnets alternating north and south. But I'm wondering what would the field lines look like if ALL the magnets faced one direction? Would it provide a useful magnetic field, or...
Homework Statement
Find parametric and symmetric equations for the line through P0 (3,3,0) and perpendicular to both given vectors (1,1,0) and (0,1,1)
Homework Equations parametric: x=x0+at, y=y0+bt, z=z0+ct;
symmetric: x-x0/a=y-y0/b=z-z0/c
The Attempt at a Solution What is first...
ANSYS Help: Simple Modal Analysis of Plate
I am modeling a plate (36"x3"x.25") in ANSYS. When I construct a line out of two keypoints and give the line a rectangular section, the analysis works and I can output modal displacements just fine. With these modal displacements I can plot the mode...
Homework Statement
There are 3 parallel lines that are crossed by other 4 parallel lines. So the problem is:
Write a formula by witch you can obtain the number of all parallelograms, if m parallel lines cross n other parallel lines.
Homework Equations
The Attempt at a Solution...
Homework Statement
The problem has two thin metal bar electrodes, one setup to be positive and one setup to be negative. A metal circular disc is placed between the two bars. Why do the equipotential lines near the edge of the bar run parallel to the bar?
The setup looks kind of like this...