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

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English Past Tense, 'Used To,' and Present Continuous

Classified in English

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Complete the sentences with the verbs below in Past Simple:

walk, enjoy, like, watch, travel, finish, listen

  1. Lucy liked her birthday presents.
  2. Last weekend I walked in the mountains for 2 hours.
  3. We enjoyed the party very much.
  4. Ken listened to his favorite CD yesterday.
  5. My sister studied Maths for an exam.
  6. They traveled to the USA in 2003.
  7. Dad washed his car last weekend.
  8. The film finished at 11:30.

Write the sentences in negative:

  1. Lucy didn't like her birthday presents.
  2. Last weekend I didn't walk in the mountains for 2 hours.
  3. We didn't enjoy the party very much.
  4. Ken didn't listen to his favorite CD yesterday.
  5. My sister didn't study months for German.
  6. They didn't travel to the USA in 2003.
  7. Dad didn't wash his car last weekend.
  8. The film didn't finish at 11:30.
... Continue reading "English Past Tense, 'Used To,' and Present Continuous" »

Electrolyte Imbalances: Sodium, Potassium, Calcium, Magnesium

Classified in Medicine & Health

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Sodium Imbalance

Sodium: primary cation in ECF

  • Transport through cells by sodium-potassium pump
  • Secreted into mucous and other secretions

Hyponatremia

Plasma sodium below 135 mEq/L

Causes
  • Losses from excessive sweating, vomiting, diarrhea
  • Certain diuretic drugs with low salt diet
  • Hormonal imbalances (low aldosterone, high ADH)
  • Excessive water intake
Effects
  • Low sodium
  • Decreases osmotic pressure in ECF

Hypernatremia

Plasma sodium above 145 mEq/L

Causes
  • Insufficient ADH
  • Loss of thirst mechanism
  • Watery diarrhea
  • Prolonged periods of rapid respiration
  • Ingesting large amounts of sodium without water balance
Effects
  • Weakness, headache
  • Dry, rough mucous membranes
  • Increased thirst
  • Difficulty swallowing
  • Cerebral edema: leads to seizures

Potassium Imbalance

Potassium: primary cation

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Plasmids pBR322 and pUC18/19: Cloning Vectors

Classified in Biology

Written on in English with a size of 1.61 KB

Plasmids pBR322 and pUC18/19

pBR322

pBR322, developed in 1977, is a foundational plasmid in molecular biology. Key features include:

  • Size: ~4,361 base pairs (bp)
  • Origin of Replication: Allows independent replication within bacteria.
  • Selection Markers:
    • ampR: Confers ampicillin resistance.
    • tetR: Confers tetracycline resistance.
  • Cloning Sites: Multiple sites for inserting foreign DNA.
  • Applications: Gene cloning, expression, and manipulation.

pUC18/19

pUC18/19, derived from pBR322 in the early 1980s, simplifies cloning. Key features include:

  • Size: ~2,686 bp
  • Origin of Replication: High-copy-number pMB1 ori for increased yield.
  • Selection Marker:
    • lacZ: Beta-galactosidase gene; enables blue/white screening for insert identification.
  • Cloning Sites: Multiple cloning
... Continue reading "Plasmids pBR322 and pUC18/19: Cloning Vectors" »

Tmux Command Reference: Master Your Terminal Sessions

Classified in Technology

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Tmux Commands Reference

Introduction to Tmux

Tmux (Terminal Multiplexer) is a powerful terminal multiplexer for Unix-like operating systems. It allows you to manage multiple terminal sessions from a single window, enhancing your command-line productivity.

Basic Tmux Commands

DescriptionCommand
Start a new session
$ tmux
Start a new named session
$ tmux new -s myname
Show all sessions
$ tmux ls
Attach to the last session
$ tmux a
Attach to a named session
$ tmux a -t myname
Kill a session by name
$ tmux kill-ses -t myname
Kill all sessions except the current
$ tmux kill-ses -a
Kill all sessions except 'myname'
$ tmux kill-ses -a -t myname
Reload Tmux configuration
$ tmux source-file ~/.tmux.conf
Show global Tmux options
$ tmux show-options -g
Display Tmux server information
$
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John Doe — Software Engineer Resume | JavaScript & React

Classified in Computers

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John Doe

Software Engineer

Contact Information

Email: [email protected]

Phone: (123) 456-7890

LinkedIn: linkedin.com/in/johndoe

GitHub: github.com/johndoe

Experience

Software Engineer at XYZ Corp

Jan 2020 - Present

  • Developed and maintained web applications using JavaScript, HTML, and CSS.
  • Collaborated with cross-functional teams to define, design, and ship new features.
  • Wrote unit and integration tests to ensure code quality.

Junior Developer at ABC Inc.

Jul 2018 - Dec 2019

  • Assisted in the development of web applications using React and Node.js.
  • Participated in code reviews and provided constructive feedback.
  • Contributed to the maintenance and improvement of existing codebases.

Education

Bachelor of Science in Computer Science

University of Somewhere, 2014 -

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Array and String Algorithms: Core Problem Solutions

Classified in Computers

Written on in English with a size of 6.48 KB


Longest Substring Without Repeating Characters

This problem involves finding the length of the longest substring in a given string that does not contain any repeating characters. A common approach uses a sliding window technique with a Set to efficiently track unique characters.

Strategy:

  • Utilize a Set to store characters within the current window.
  • Iterate through the string with a right pointer, adding characters to the Set.
  • If a duplicate character is encountered, move the left pointer forward, removing characters from the Set, until the duplicate is no longer present.
  • At each step, update the maximum length found.

Java Implementation Snippet

class Solution {
    public int findLongestSubstringWithoutRepeatingCharacter(String str) {
        Set&
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English Vocabulary for Conflict and Power Dynamics

Classified in Spanish

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Vocabulary: War and Conflict Terminology

Key Nouns Related to Conflict

Allies
Aliados
Asymmetric Warfare
Guerra descompensada
Atrocities
Actos violentos
Border
Frontera
Civilian Government
Gobierno civil
Coalition
Coalición
Guerrilla Raids
Ataques inesperados por gente no militar
Insurgency
Insurgencia
Invasion
Invasión
Leader
Líder
Occupation
Ocupación
Security
Seguridad
Special Forces
Fuerzas especiales
Terrorist-Training Camps
Campos de entrenamiento de terroristas
Terrorists
Terroristas
Troops
Tropas
An Ambush
Una emboscada
Attack
Ataque
Forces
Fuerzas
Power
Poder / Potencia
The Ultimatum
Un ultimátum
War
Guerra

Essential War and Conflict Collocations

  • Occupy a country
  • Supply arms (to)
  • Station troops (in)
  • Make a breakthrough
  • Break the stalemate
  • Inflict casualties
  • Put up resistance
  • Suffer
... Continue reading "English Vocabulary for Conflict and Power Dynamics" »

English Grammar and Vocabulary Guide

Classified in English

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English Grammar

Verb Tenses

Past Tense Transformations

  • Present Simple (eats/eat) → Past Simple (ate)
  • Don't/Doesn't → Didn't
  • Present Continuous (am, is, are + v ing) → Past Continuous (was, were + v ing)
  • Past Simple (-ed or irregular) → Past Perfect (had + past participle)
  • Present Perfect (have, has + past participle) → Past Perfect
  • Past Perfect (had + past participle) → Past Perfect
  • Past Continuous (was, were + v ing) → Past Perfect Continuous (had + been + v ing)
  • Present Perfect Continuous → Past Perfect Continuous
  • Past Perfect Continuous → Past Perfect Continuous
  • Future: Will + infinitive → Would + infinitive
  • Can → Could + infinitive
  • Must/Have to → Had to + infinitive
  • May → Might + infinitive

Changes in Reported Speech

  • Now → Then
  • Today
... Continue reading "English Grammar and Vocabulary Guide" »

Understanding Financial Formulas and Calculations

Classified in Mathematics

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Tutorial 1

If you get a positive value times a number,

You need to shift the decimal to the right as many times as the number specified.

If negative, move it to the right.

Simple interest formula = S = FV = P(1 + iK)

Compound interest formula = Sk = P(1 + i)^k

Sn = P(1 + I/T)^n
where I is interest
T is frequency of compounding per year
K is the number of years
N is the total number of periods - K T or TK

Depreciation Formula = Vo or P = Initial value,
Vk = P(1 - d)^k

Tutorial 2

1. 5 years 1 + r = (FV/PV)^(1/5)
(i) r = 10.38%
(ii) r = 10.47%
(iii) r = 10.51%
(iv) r = 10.52%
(v) r = 10.52%
2. 1 + r = (1 + 0.06/12)^8 ∙ (1 + 0.072/12)^4
1 + r = (1.005)^8 ∙ (1.006)^4
1 + r = (1.0407) ∙ (1.0242) = 1.06591
r = 6.59%

For an initial outlay of $1000, the net return is

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Understanding Text Structure and Rhetorical Devices

Classified in Arts and Humanities

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Macrostructure

Theme: This is the topic sentence that summarizes the main idea. Usually at the beginning.

Rheme: Arguments that support the theme. In the middle.

Thesis Statement: Restatement of the initial idea. Normally at the end.

Microstructure

Lexicon

  • Formal or informal language (e.g., Provides, expand).
  • Attributive adjectives such as “logically and psychologically satisfying conclusion”.
  • Semantic fields (Campos semánticos).
  • Elements that are not formal (Common words like 'too' instead of 'moreover'; 'quite' similar). The combination of formal register with more accessible language suggests that this is an informative text.
  • Main statements (topic sentences and thesis statements) use the copulative verb 'to be' which indicates that the statement
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