The Chinese Revolution and the Rise of Mao Zedong
The Communist Revolution in China, the Decolonization of Asia, and the Arab-Israeli Conflict
The Country
China, a global village, had 1,350,000 million inhabitants in 2005. During the nineteenth century, it was characterized by feudalism and its imperial structure: a centralist monarchy with a strong bureaucratic government. The social base was the immense dispossessed peasant population (80%), subject to a land tenure regime of semi-slavery, under a minority of noble landowners. Unlike what happened
Read MoreWetlands: Vital Role in Water Resource Management
The Role of Wetlands as a Water Resource
A wetland is an area of land with soil that is permanently flooded. It includes freshwater marshes (e.g. Macquarie Marshes in Australia), bogs (e.g. Strangmoor Bog in the USA), and swamps (e.g. The Everglades in Florida, USA). Wetlands are a very important water resource as they provide many ecosystem services. There are marine, coastal, inland, and artificial types, subdivided into 30 categories of natural wetlands and 9 human-made ones such as reservoirs,
Read MoreFamily Law and Alimony: Rights, Obligations, and Characteristics
Family Law: Content and its Characteristics
As Lacruz December states, “The right of law in front of the family is a ‘postrius’ because the legislator does not create the family, but is limited to disciplining it, taking into account other human life facts.” On the other hand, Diez-Picazo adds, “Initially, the family is a group and a qualifying institution. Only the ‘social’ becomes legal when the legal system occupies, organizes, and regulates it legally, transforming it into a legal institution.
Read MoreBiotechnology: Applications in Industry and Environment
Biotechnology
Biotechnology is technology based on biology, especially used in agriculture, pharmacy, food science, environment, and medicine. It develops into a multidisciplinary approach involving various disciplines and sciences like biology, biochemistry, genetics, virology, agronomy, engineering, physics, chemistry, medicine, and veterinary, among others. It has a great impact on pharmacy, medicine, microbiology, food science, mining, agriculture, and other fields.
Under the Convention on Biological
Read MorePlate Tectonics: Understanding Earth’s Dynamic Processes
Pangaea: The Supercontinent
Alfred Wegener, a German meteorologist, proposed in 1912 that the continents were once joined together in a single landmass called Pangaea. He theorized that the continents gradually drifted apart over what he believed to be a flat ocean bottom.
Evidence Supporting Continental Drift
Wegener used several lines of evidence to support his theory:
- Fossil Matches Across Oceans: Similar fossils are found near coastlines on different continents.
- Rock Types and Structures Match: Geological
Essential Machining Operations: Sawing, Filing, Chiseling, Reaming, and Drilling
Sawing
The saw blade. The first operation of sawing permits the removal of leftover pieces. A saw consists of a sheet of tempered steel with a smooth part and a toothed part.
Types of saw blades:
- Bimetal saw blades
- Bilateral saw blades
Bimetal saw blades are tempered. Bilateral saw blades present teeth on each side.
Tooth pitch. It is the distance between teeth. If the pitch is fine, the teeth will be smaller, otherwise, they will be larger.
What is tooth set? To avoid wedging and eventual damage to the
Read More