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Bài viết của Trần Bảo Ngọc

Hormones

Although a given hormone may travel throughout the body in the bloodstream, it will affect the activity only of its target cells; that is, cells with receptors for that particular hormone. Once the hormone binds to the receptor, a chain of events is initiated ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

The Particle-Wave Duality Reviewed

Particle-wave duality —the fact that all particles have wave properties—is one of the cornerstones of quantum mechanics. We first came across it in the treatment of photons, those particles of EM radiation that exhibit both particle and wave properties, ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

Themes and Concepts of Biology

Biology is the science that studies life. What exactly is life? This may sound like a silly question with an obvious answer, but it is not easy to define life. For example, a branch of biology called virology studies viruses, which exhibit some of the ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

Introduction to Dynamics: Newton’s Laws of Motion

Newton’s laws of motion describe the motion of the dolphin’s path. (credit: Jin Jang) Motion draws our attention. Motion itself can be beautiful, causing us to marvel at the forces needed to achieve spectacular ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

Fibrous Joints

At a fibrous joint, the adjacent bones are directly connected to each other by fibrous connective tissue, and thus the bones do not have a joint cavity between them ([link]). The gap between the bones may be narrow or wide. There are three types of fibrous ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

Terrestrial Biomes

The Earth’s biomes are categorized into two major groups: terrestrial and aquatic. Terrestrial biomes are based on land, while aquatic biomes include both ocean and freshwater biomes. The eight major terrestrial biomes on Earth are each distinguished by ...

Tác giả: Trần Bảo Ngọc viết 15:28 ngày 25/05/2018 chỉnh sửa

Dynamics of Rotational Motion: Rotational Inertia

If you have ever spun a bike wheel or pushed a merry-go-round, you know that force is needed to change angular velocity as seen in [link]. In fact, your intuition is reliable in predicting many of the factors that are involved. For example, we know that a ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa

Theoretical Perspectives on Culture

Music, fashion, technology, and values—all are products of culture. But what do they mean? How do sociologists perceive and interpret culture based on these material and nonmaterial items? Let’s finish our analysis of culture by reviewing ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa

Newton’s First Law of Motion: Inertia

Experience suggests that an object at rest will remain at rest if left alone, and that an object in motion tends to slow down and stop unless some effort is made to keep it moving. What Newton’s first law of motion states, however, is the ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa

Preface to Introduction to Sociology

OpenStax College is a non-profit organization committed to improving student access to quality learning materials. Our free textbooks are developed and peer-reviewed by educators to ensure they are readable, accurate, and meet the scope and sequence ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa