Notes, summaries, assignments, exams, and problems for University

Polymerization –plus and minus ends of actin, Kd, critical concentration, phases of growth of polymers (lag, growth, and steady-state), nucleating factors, why growth occurs preferentially at plus end.

a.High Kd and Cc= ADP + Factin lower affinity actin so dissociate

b.Lower kd and Cc= Gactin/Factin + ATP higher affinity actin so dissociate

c.Profilin and thymosin: Profilin binds to (-) end = plus end grow fast

d.Thymosin buffer + actin monomer = prevent polymerization or ATP hydrolysis.

e.Actin monomer (is above Kd) & regulates actin filament assembly.

Arp2/3 comples to make a seed (nucleate) acting growth. Can create tree-like web

Myosin II structure: motor protein makes force in skeletal contraction muscles.

a.Heavy chain with NT head (ATPase... Continue reading "Cell Biology: Actin, Myosin, and Microtubules" »

Java LinkedQueue Implementation (Generic)

This document presents the source code for a generic LinkedQueue class in Java. This implementation uses a singly linked list structure, adheres to the FIFO (First-In, First-Out) principle, and implements the Iterable interface.

package org.mp.repaso;

import java.util.Iterator; import java.util.NoSuchElementException;

public class LinkedQueue<T> implements Iterable<T> {

<span style="color:#ba2da2">private int</span> N; <span style="color:rgb(0,132,0)">// Tamaño de la cola</span>
<span style="color:rgb(186,45,162)">private</span> Node&lt;T&gt; primero; <span style="color:rgb(0,132,0)">// Primer elemento de la cola (Head)</span>
<span

Derivadas

derivative rules

der(x^a) = a . x^a-1

der(a) = 0

(f+-g)' = f' + g'

(a.f)' = a .f'

(f/g)' = ((f'.g-g'.f)/g²)

der( ln(x) ) = 1/x

der( ln|x| ) = 1/x

der( e^x) = e^x

der( log(x) ) = 1/(x.ln(10))

der( log_a(x) ) = 1/(x.ln(a))

common limits

lim_x->cf(x) = ∞

lim_x->cg(x) = L

lim_x->c[f(x) +- g(x)] = ∞

lim_x->c[f(x) . g(x)] = ∞, L>0

lim_x->c[f(x) . g(x)] = - ∞, L<0

lim_x->∞(1 + k/x)^x = e^k

lim_x->∞[axⁿ] = ∞, 0

lim_x->0(1 +x)^1/x = e

Trigonometria

basic identities

tan(x) = sin(x)/cos(x)

cot(x) = cos(x)/sin(x)

sec(x) = 1/cos(x)

csc(x) = 1/sin(x)

pythagorean identities

sin(2x) = 2 sin(x)cos(x)

cos(2x) = 1 - 2.sin²(x)

tan(2x) = 2tan(x) / 1-tan²(x)

sin(x) | -1<= y <= 1 | arcsin(x) | - (π/2) <= y <= π/2

cos(x) | -1<= y <= 1 | arccos(

Blow away

Impress somebody a lot.

Break down

Stop working because something has broken.

Build up

Create or develop something.

Call off

Cancel something.

Carry on

Continue doing something.

Catch up

Meet up or find out the latest news.

Catch up with

Reach somebody who is ahead.

Check in

Go to a desk at an airport or hotel to say you have arrived.

Check out

Visit somewhere or find out more information about it.

Chill out

Spend time relaxing.

Come across

Find something by chance.

Come up with

Think of or suggest an idea or a plan.

Count on

Be confident you can depend on someone or something.

Cut down on

Reduce the size, amount, or number of something.

Deal with

Solve a problem or do something necessary.

Dress up

Put on special clothes.

End up

Be in a situation or place you did

Vocabulary Completion Exercise

Complete the sentences with the words below. There are more words than you need:

Shocking, personal trainer, swollen, breathe, sigh, reflection, relax, treatment

1. My personal trainer makes sure I do all the right exercises.
2. I asked the author to sign the book.
3. After I fell, my foot was swollen.
4. I think it's shocking the way some animals are mistreated.
5. What treatment did the doctor suggest for your rash?
6. I see my reflection in the window.

Sentence Rewriting Practice

Rewrite the following sentences using the words in brackets. Do not change the original meaning of the sentences:

1. In the past, trains were much slower. (used to)
   In the past, trains used to be much slower.
2. I don't know the girl. Her dog ate all your food. (whose)

Stakeholder Salience Model Attributes

Classes of stakeholders can be identified based on the possession of one, two, or all three of the attributes: power, legitimacy, and urgency.

Four Propositions of Stakeholder Classes

There are four propositions of the classes of stakeholders.

• Proposition 1: Stakeholder salience will be positively related to the cumulative number of stakeholder attributes.
• Proposition 2: Stakeholder salience will be low where only one of the stakeholder attributes—power, legitimacy, and urgency—is perceived by managers to be present (called Latent Stakeholders).
• Proposition 3: Stakeholder salience will be medium where two of the stakeholder attributes—power, legitimacy, and urgency—are perceived by managers to be present

Structural Stability

Stability depends on the capacity of the support. Ensure that the system is a structure, not a mechanism. Structures become unstable due to inadequate external support or loading.

Determining Stability

To determine stability, imagine a rigid body in a 2D coordinate system where each point is able to translate and rotate. We calculate the degree of freedom (DOF) using the following formula:

DOF = 3Rb - R - 2H

Conditions for Structural Instability

• Parallel reactions
• Concurrent forces

Influence Lines (IL)

An Influence Line (IL) is a graphic representation of the relationship between a component force, restraint reaction, or displacement value and the position of a unit force. There are two primary methods for development: the equilibrium... Continue reading "Structural Stability and Influence Lines Analysis" »

The Great Depression: The Longest and Deepest Economic Downturn in American History

Causes of the Great Depression

In 1929, the prevailing economic theory held that the economy possessed self-correcting mechanisms that would prevent a severe depression. However, the Great Depression defied these expectations.

• Overproduction: Some economists believed the depression was caused by an excess of goods and services.
• Lack of Investment Opportunities: Others pointed to a decline in profitable investment opportunities.
• Technological Innovation: Joseph Schumpeter argued that the failure of entrepreneurs to introduce new products contributed to the depression.
• Stock Market Crash and Bank Panics: The stock market crash of 1929 and subsequent bank failures exacerbated

Extreme Sports and Personal Interests

1) I like cycling and camping, despite the fact that I don't do them usually. I would like to try canyoning, kayaking, jet skiing, and rock climbing because they are extreme sports that would probably make me feel really good, and I could relax with them.

The Benefits of Brain Training

2) Brain training can and must improve intellectual capacity. Just as physical exercise is good for the body, this mental training helps the mind to work better. The benefits can last; participating in interactive games helps maintain cognitive functions. Activities such as mind reading may delay or prevent memory loss. Those who took supervised brain training sessions showed lasting improvements in memory, reasoning, and processing... Continue reading "Extreme Sports, Brain Health, and Tech Innovations" »

Feminism

The origins of the second wave of Feminism can be traced back to the 1970s and the 1980s. A great number of women started writing and publishing books about the so-called notion of “Feminity”. Unlike the first wave of Feminism, which was a suffragist movement in which women were asking the right to vote, the second wave of Feminism goes beyond that. The feminist thinkers of the second wave based their theory on gender stereotyping. They claimed that equality between men and women had not been fully achieved because biological sex was the basis to determine the role a man or a woman must play in society.

Angela Carter's The Werewolf and Company of Wolves

The first reason why we can consider these texts as feminist is the issue of “authority