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Bài viết của Trần Bảo Ngọc

Urbanization

The lights of New York City are an iconic image of city life. (Photo courtesy of Or Hiltch/flickr) is the study of the social, political, and economic relationships in ...

Tác giả: Trần Bảo Ngọc viết 15:09 ngày 25/05/2018 chỉnh sửa

Gas Exchange across Respiratory Surfaces

The structure of the lung maximizes its surface area to increase gas diffusion. Because of the enormous number of alveoli (approximately 300 million in each human lung), the surface area of the lung is very large (75 m 2 ). Having such a large surface area ...

Tác giả: Trần Bảo Ngọc viết 15:09 ngày 25/05/2018 chỉnh sửa

Seed Plants: Angiosperms

From their humble and still obscure beginning during the early Jurassic period (202–145.5 MYA), the angiosperms, or flowering plants, have successfully evolved to dominate most terrestrial ecosystems. Angiosperms include a staggering number of genera and ...

Tác giả: Trần Bảo Ngọc viết 15:09 ngày 25/05/2018 chỉnh sửa

Osmoregulation and Osmotic Balance

Osmosis is the diffusion of water across a membrane in response to osmotic pressure caused by an imbalance of molecules on either side of the membrane. Osmoregulation is the process of maintenance of salt and water balance ( osmotic balance ) across ...

Tác giả: Trần Bảo Ngọc viết 15:08 ngày 25/05/2018 chỉnh sửa

The Pauli Exclusion Principle

All atoms except hydrogen are multiple-electron atoms. The physical and chemical properties of elements are directly related to the number of electrons a neutral atom has. The periodic table of the elements groups elements with similar properties ...

Tác giả: Trần Bảo Ngọc viết 15:08 ngày 25/05/2018 chỉnh sửa

Conservative Forces and Potential Energy

Work is done by a force, and some forces, such as weight, have special characteristics. A conservative force is one, like the gravitational force, for which work done by or against it depends only on the starting and ending points of a motion and ...

Tác giả: Trần Bảo Ngọc viết 15:08 ngày 25/05/2018 chỉnh sửa

Variations in Family Life

The combination of husband, wife, and children that 99.8 percent of Americans believes constitutes a family is not representative of 99.8 percent of U.S. families. According to 2010 census data, only 66 percent of children under age 17 live in a ...

Tác giả: Trần Bảo Ngọc viết 15:08 ngày 25/05/2018 chỉnh sửa

Synovial Joints

Synovial joints are the most common type of joint in the body ([link]). A key structural characteristic for a synovial joint that is not seen at fibrous or cartilaginous joints is the presence of a joint cavity. This fluid-filled space is the site at which the ...

Tác giả: Trần Bảo Ngọc viết 15:07 ngày 25/05/2018 chỉnh sửa

Falling Objects

Falling objects form an interesting class of motion problems. For example, we can estimate the depth of a vertical mine shaft by dropping a rock into it and listening for the rock to hit the bottom. By applying the kinematics developed so far to falling ...

Tác giả: Trần Bảo Ngọc viết 15:06 ngày 25/05/2018 chỉnh sửa

Types of Tissues

The term tissue is used to describe a group of cells found together in the body. The cells within a tissue share a common embryonic origin. Microscopic observation reveals that the cells in a tissue share morphological features and are arranged in an orderly ...

Tác giả: Trần Bảo Ngọc viết 15:06 ngày 25/05/2018 chỉnh sửa

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Urbanization

Gas Exchange across Respiratory Surfaces

Seed Plants: Angiosperms

Osmoregulation and Osmotic Balance

The Pauli Exclusion Principle

Conservative Forces and Potential Energy

Variations in Family Life

Synovial Joints

Falling Objects

Types of Tissues

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