Disease Outbreaks: Definitions, Steps, and Modes of Transmission
Disease Detectives
Pandemic: A global disease outbreak.
Outbreak: A sudden occurrence of disease in a community.
Epidemic: A widespread occurrence of a disease in a community at a particular time.
10 Steps to Investigate an Outbreak
- Prepare for field work
- Establish the existence of an outbreak
- Verify the diagnosis
- Construct a working case definition
- Find cases systematically and record information
- Develop Hypothesis
- Evaluate hypotheses
- Refine
Understanding Air Pollution: Sources, Types, and Impacts
Air Pollution: An Overview
Air pollution: The presence in the air of substances or forms of energy that imply danger, harm, or serious inconvenience for people and goods of any nature.
Sources of Contamination
- Natural: The activity of the geosphere and the biosphere. Volcanic eruptions release sulfur compounds. Respiration processes of living beings increase the amount of CO2 in the atmosphere. The decomposition of anaerobic organic matter produces methane. Other emission sources are fires and electrical
Spain’s Railway Revolution & 19th-Century Trade Impact
Spain’s Railway Revolution in the 19th Century
Transportation: The introduction of the railway in Spain was a true revolution, facilitating the development of trade and industry. It had a significant advantage compared to traditional methods of transporting goods, offering a cheap, fast system with a large load capacity.
General Railway Act (1855)
Passed during the Progressive Biennium, the General Railway Act of 1855 encouraged investment within Spain through the stock market. It also allowed the
Read MoreUnderstanding Affective Processes: Emotions, Feelings, and Passions
Affective Processes
Emotion
It is a state of great excitement, manifesting complex behavior patterns, which may or may not be oriented towards a goal. Affective states are derived from the perception of past experiences and are not involved in mental activity. These states are intense, short-lived, and often linked to a shock.
Feeling
Feelings can be pleasant or unpleasant, are less intense than emotions, and are linked to intellectual processes. They are individual and of longer duration.
Passion
Passion
Read MoreJean-Jacques Rousseau: Philosophy, Society, and Politics
Jean-Jacques Rousseau: Historical and Sociocultural Framework
The 18th century saw the maintenance of old economic, political, and social structures, but these structures would suffer progressive damage, culminating in the American and French Revolutions. Resistance to servitude persisted in largely peasant Europe, but new agricultural and industrial techniques brought socioeconomic changes. Artisan workshops and guilds also persisted. This was the century of Enlightened Despotism, where absolute
Read MoreRational Soul, Faith, and Reason: Aquinas and Descartes
Rational Soul and the Limits of Knowledge
According to St. Thomas, the rational soul of man is limited because it must consider the senses of the body. It must start from the concrete particular to reach the abstract universal. These limits are evident when considering God; our knowledge is imperfect and analogical. Where reason fails, faith begins. Each has complementary truths and they do not have to conflict. The knowledge of faith, revealed by God in scripture, expands our knowledge gained by
Read MoreThe 18th Century: From Absolute Monarchy to American Revolution
Key Concepts of the 18th Century
Absolute Monarchy
A system where the monarch holds supreme autocratic authority, not restricted by written laws, legislature, or customs. The economy and the people have no voice.
Nobility
The land-based economy was dominated by the nobility.
War of Succession (1701-1714)
The struggle for the throne between the Bourbons and the Habsburgs in Spain. It was initiated by the Bourbons with Philip V.
Parliamentary Monarchy
A system where the monarch’s power is limited and conditioned
Read MoreMarine Life and Ocean Ecosystems: A Comprehensive Study
Marine Life and Ocean Ecosystems
Benthic Organisms
Epifauna: Organisms living on the surface of the ocean floor, such as corals, mussels, sea stars, sea urchins, and sponges.
Epibenthos: Organisms that live in association with the seafloor but swim up into the water column, such as carpet sharks, shrimp, and rays.
Hard Bottoms: Animals adapted to live on the top of rocks.
Infauna: Organisms that live burrowed into the ocean floor, such as clams and polychaetes. They use tubes for food and oxygen supply.
Read MoreDescartes and Hume: Foundations of Modern Philosophy
Descartes’s Philosophy
René Descartes’s philosophy emerged during the scientific revolution of the sixteenth century, a period marked by conflicts between geocentric Aristotelian views and the heliocentric Copernican model. The Protestant Reformation also contributed to a climate of doubt, affecting both science and religion. In this context, Descartes sought a philosophy free from error, aiming for certainty. His method, inspired by the resolution-composition approach of the school of Padua, was
Read MoreGalician Literature: Brotherhoods of Speech & 20th Century
The Brotherhoods of Speech and Galician Literature
The early 20th century brought significant social changes to Sao Paulo. This period saw agrarian claims for redemption and forums, leading to the decline of the nobility. In cities, an industrial and commercial bourgeoisie emerged, requiring manpower, which increased migration from rural areas to urban centers and gave rise to the proletariat. Emigration to America remained as intense as in the previous century.
From a literary perspective, we can
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