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

-Techniques of putting very cold -water on your face

“Tek-niks of pu-ting veri kold wo-ter on yor feis”

-If these techniques do not work, -you may need:

“If diz tek-niks do not werk, yu may nid:”

-an injection of medicine into a vein -to reset your heart rhythm

“an in-yek-shon of med-i-sin in-to a vein to ri-set yor jart ri-zum”

-a procedure that uses electricity -to reset your heart rhythm 

-(electrical cardioversion)

“a pro-si-jer dat yu-zes e-lek-tri-si-ti to ri-set yor jart ri-zum (e-lek-tri-cal car-dio-ver-shon)”

⸻

-Treatment to prevent symptoms

“Trit-ment to pri-vent simp-toms”

-If you keep getting symptoms or if -you’re at risk of having a very fast -heartbeat that becomes life

-threatening, you may be offered -treatment... Continue reading "Wolff-Parkinson-White Syndrome: Symptoms and Treatments" »

Role of the Teacher

• Facilitator: Guides learning / Guía el aprendizaje
• Fosters autonomy: Fomenta autonomía
• Student-centered classes
• Scaffolding and positive feedback
• Avoids pressure: Evita presión y juicios negativos

Classroom Management

• Maintain order and attention
• Clear routines
• Attention-grabbers
• Change activities every 15–20 minutes
• Use of different spaces
• Positive reinforcement and autonomy

Communicative Language Teaching

• Communicative approach: Enfoque comunicativo
• Meaningful language: Lenguaje con significado
• Real-life situations
• Use of language to communicate

4 Dimensions of Communicative Competence

1. Linguistic: Vocabulario, gramática, sintaxis
2. Sociolinguistic: Normas sociales, cultura
3. Discourse: Cohesión y coherencia
4. Strategic: Compensar fallos, estrategias

React Hooks and Essential Libraries

useState Hook

Purpose

Purpose: Adds state to functional components.

Import

import { useState } from 'react';

Syntax

const [state, setState] = useState(initialValue);

Update Methods

• setState(newValue);
• setState(prevState => ...); (for updates based on previous state)

Example

import React, { useState } from 'react';

function Counter() {
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={() => setCount(count + 1)}>Increment</button>
    </div>
  );
}

useEffect Hook

Purpose

Purpose: Performs side effects such as data fetching, subscriptions, or direct DOM manipulations.

Import

import { useEffect } from 'react';

Syntax

useEffect(

Este compendio presenta una colección organizada de prefijos, palabras raíces y sufijos, tanto en español como en inglés, incluyendo ejemplos de terminología general y médica.

Componentes Morfológicos en Español

10 Ejemplos de Prefijos Comunes

• Pre-: Significa "antes". Ejemplo: prever (pre- + ver).
• In-: Significa "no" o "dentro". Ejemplo: incapaz (in- + capaz).
• Re-: Significa "repetición" o "intensificación". Ejemplo: rehacer (re- + hacer).
• Sub-: Significa "debajo" o "inferior". Ejemplo: subterráneo (sub- + terráneo).
• Extra-: Significa "fuera de" o "adicional". Ejemplo: extraordinario (extra- + ordinario).
• Des-: Significa "negación" o "separación". Ejemplo: deshacer (des- + hacer).
• Inter-: Significa "entre" o "en medio". Ejemplo: internacional

Preparation of Naphthalene

Naphthalene is a fused-ring aromatic hydrocarbon with two benzene rings. It can be prepared via the following methods:

• From Coal Tar: Coal tar, a by-product of coal processing, is a major source of naphthalene. It is extracted and purified using distillation followed by crystallization.
• Synthesis from Benzene: Benzene undergoes a series of reactions to form naphthalene:
  • Alkylation: Benzene reacts with alkyl halides (like methyl chloride) to form methylbenzene (toluene).
  • Cyclization: Toluene undergoes further reaction with chlorine and heat to form naphthalene.

Preparation of Anthracene

Anthracene is a tricyclic aromatic hydrocarbon consisting of three fused benzene rings. It is mainly obtained from coal tar but can also... Continue reading "Synthesis and Sources of Aromatic Hydrocarbons" »

Insect Defenses Against Predators

Three Plant Mechanisms to Defend Against Insects

• Physical: Thick walls
• Chemical: Phytochemicals that kill insects
• Entrapment: Pitcher plants

How Insects Overcome Physical Defenses

• Specialized mandibles
• Evolution
• Immunity to phytochemicals
• Specialization to survive the digestive liquid of pitcher plants

Insect Parasitism

Endoparasites

Approximately 20% of insect orders include endoparasites. Some orders that include endoparasites are:

• Hymenoptera
• Diptera
• Strepsiptera

Ectoparasites

Some orders that include ectoparasites are:

• Anoplura
• Mallophaga
• Siphonaptera

Three Challenges Faced by Endoparasites

• Respiration
• Excretion/getting rid of toxic nitrogenous waste without killing the host
• Avoiding the host's endocrine system

Insect Social Behavior

Subsocial

Essential Japanese Language Basics

This section provides fundamental Japanese phrases and essential cultural insights to help you navigate daily interactions and understand Japanese society better.

Hiragana and Katakana Fundamentals

Key Japanese Phrases for Communication

Essential Japanese Greetings

Good morning.
おはようございます。
Ohayou gozaimasu.

Hello / Good afternoon.
こんにちは。
Konnichiwa.

Good evening.
こんばんは。
Konbanwa.

Goodbye.
さようなら。
Sayounara.

Good night.
おやすみなさい。
Oyasuminasai.

Polite Japanese Expressions

Please.
お願いします。
Onegaishimasu.

Thank you.
ありがとうございます。
Arigatou gozaimasu.

I am sorry.
ごめんなさい。
Gomen nasai.

No, don't worry about it / You're welcome.
いいえ、気にしないで。
Iie,

Sebastian F. Ramallo Asensio (Universidad de Murcia)

"Militum deinde quod eos non conlaudavit virtutem eruptio hostium, non altitudo moenium, Stagni inexplorata non vada, non castellum in high Tumulo situm, non munitissima arx deterruisset quo minus transcenderent omnia perrumperentque."

(T. Livy, XXVI, 48, 4)

This text from Livy's History of Rome clearly expresses components of the defensive apparatus of the city founded by Hasdrubal: the height of its walls, the unexplored shallow lagoon, the fortress located on a high hill, and the well-defended citadel. These components, coupled with the excellent conditions of its harbor and its strategic position on communication routes to Africa and Italy through the Balearic Islands (Appian, 19), made... Continue reading "The Defensive Walls of Carthago Nova: History and Archaeology" »

#useradd nombredeusuario :: para crear usuarios

#passwd :: nombredelusuario

#groupadd :: nombredelgrupo :: (forma normal)

#groupadd -g 600 nombredelgrupo :: (guid sobre 650)

#userdel nombredelusuario :: para deletear usuarios

#groupdelnombredelgrupo :: borrar el grupo

#usermod -G nombredelgrupo nombredeusuario :: para asignar usuario a grupo.

opcion 2: editar archivo /etc/group -> grupo:x:600:usuarioqueseagregara

#nano /etc/shadow :: para poder ver los usuarios y poder bloquearlos

#passwd -l nombredeusuario :: para bloquear usuario

#passwd -u nombredeusuario :: para desbloquear usuario

#sudo passwd :: para cambiar la contraseña de root

# tail /etc/passwd :: paraver informacion de usuarios

#su nombredelotrousuario :: para iniciar sesion como el usuario... Continue reading "Centos 5.5" »