Urban Planning and Regional Organization: Key Concepts
Urban Planning Concepts
Conurbation: A continuous urban agglomeration created by the parallel growth of two or more cities that join without losing their independence.
Rururbanization: A transitional space between the country and the city where mixed crops and rural and urban lifestyles coexist.
Industrial Estate Services: Areas on the periphery with business and technology parks and business estates of detached buildings with fewer resources, which emerged from the 1950s to 1960s.
Urban Layout: The
Read MoreVolleyball Techniques: Serving, Blocking, Passing, and Attacking
Volleyball Techniques
Technical Background
Various techniques are used to drive the ball in different game situations. In all cases, the ball must be hit, not caught or thrown. Retention, drag, or accompaniment of the ball is a foul. The arbitral discretion in applying this rule is a common source of controversy for fans who attend games.
Serve
Each section begins with a kick of the ball from behind the baseline. The player throws the ball into the air and hits it, looking for weaknesses in the opponent’
Read MoreEuropean Imperialism and Global Conflict: 1870-1914
European Imperialism and Global Conflict (1870-1914)
Imperialism (16th-18th Centuries)
Between 1870 and the start of World War I in 1914, significant changes occurred. The economic downturn of 1873-1879 spurred protectionism, leading to a search for new markets, industries, and investment opportunities for growing European nations. Europe’s population surge to 450 million between 1815 and 1914 necessitated advancements in transportation. Powerful trading companies and chambers of commerce established
Read MoreChemical Bonds: Ionic, Covalent, and Metallic
Understanding Chemical Bonds: Types and Properties
A chemical bond arises when atoms interact, leading to compounds with lower energy than the separated atoms. To achieve a noble gas configuration, atoms can gain, lose, or share electrons. Depending on how this is achieved, bonds can be ionic, covalent, or metallic. The properties of compounds depend on the type of bond between their atoms.
Ionic Bond
An ionic bond occurs between metallic and nonmetallic elements. Metals give up their extra electrons
Read MoreEvolutionism, Creationism, and the Mind-Brain Problem
Evolutionism and Creationism: Contrasting Theories
Are evolutionism and creationism theories opposed? They operate within different frameworks. Evolution is a scientific theory, while creationism is a religious belief. The opposite of evolutionism (the doctrine that all species today come from more primitive species) is Fixism (the doctrine that asserts that species are separate and remain unchanged over time).
Conversely, the opposite of creationism (the doctrine that all reality originates from
Read MorePlant Physiology: Processes and Mechanisms
Root Pressure
Root pressure is maintained by water accumulation in the root tissues. This generates pressure on xylem sap, pushing it upwards. Guttation is evidence of this phenomenon, typically in tropical jungles.
Gas Exchange
Stomata
Stomata are specialized structures of the epidermis formed by two kidney-shaped cells, called guard cells, which define a space between them, the ostiole. After entering the ostiole, CO2 diffuses into the intercellular spaces of the tissue, enters the cells, and reaches
Read MorePuccini, Strauss, Debussy, and Ravel: A Comparison of Operas
Operas of Puccini, Strauss, Debussy, and Ravel
Giacomo Puccini (1858-1924)
Giacomo Puccini, the most successful Italian opera composer after Verdi, was the son of a church organist and composer. Initially expected to follow in his father’s footsteps, he chose to focus on opera, studying at the conservatory in Milan.
Puccini gained attention with his first opera, Le Villi, in 1884. His third opera, Manon Lescaut (1893), catapulted him to international fame. Over the next three decades, he produced nine
Read MoreImmobilization Techniques in Biosensors: Methods and Applications
Immobilization
Immobilization is the technique used for the physical or chemical fixation of cells, organelles, enzymes, or other proteins (e.g., monoclonal antibodies) onto a solid support, into a solid matrix, or retained by a membrane, in order to increase their stability and make possible their repeated or continued use.
Methods of Immobilization
The selective element must be connected to the transducer. This presents particular problems if the former is biological in nature. Several classes of
Skydiving Adventure, Movie Review & Science Experiment
My Skydiving Experience
Immersion vs. Classroom: The Best Way to Learn a Language?
From VOA Learning English, this is As It Is. I’m Anna Matteo in Washington.
Today on As It Is, we will hear about something our listeners do every day they hear, read, or watch VOA Learning English: learning a second language.
We will explore whether being surrounded by a foreign language, or immersed in it, is the best way to learn. Or are traditional lectures with grammar rules and vocabulary lists the best way to speak like a native speaker?
Steve Ember has more on that topic.