Danh sách bài viết của Nguyễn Mỹ Hương

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Bài viết của Nguyễn Mỹ Hương

Satellites and Kepler’s Laws: An Argument for Simplicity

Examples of gravitational orbits abound. Hundreds of artificial satellites orbit Earth together with thousands of pieces of debris. The Moon’s orbit about Earth has intrigued humans from time immemorial. The orbits of planets, asteroids, meteors, and ...

Tác giả: Nguyễn Mỹ Hương viết 15:24 ngày 25/05/2018 chỉnh sửa

Bone Formation and Development

In the early stages of embryonic development, the embryo’s skeleton consists of fibrous membranes and hyaline cartilage. By the sixth or seventh week of embryonic life, the actual process of bone development, ossification (osteogenesis), begins. There ...

Tác giả: Nguyễn Mỹ Hương viết 15:24 ngày 25/05/2018 chỉnh sửa

Atoms, Isotopes, Ions, and Molecules: The Building Blocks

At its most fundamental level, life is made up of matter. Matter is any substance that occupies space and has mass. Elements are unique forms of matter with specific chemical and physical properties that cannot be broken down into smaller substances by ...

Tác giả: Nguyễn Mỹ Hương viết 15:24 ngày 25/05/2018 chỉnh sửa

Introduction to One-Dimensional Kinematics

The motion of an American kestrel through the air can be described by the bird’s displacement, speed, velocity, and acceleration. When it flies in a straight line without any change in direction, its motion is said to be one ...

Tác giả: Nguyễn Mỹ Hương viết 15:24 ngày 25/05/2018 chỉnh sửa

Plant Sensory Systems and Responses

Animals can respond to environmental factors by moving to a new location. Plants, however, are rooted in place and must respond to the surrounding environmental factors. Plants have sophisticated systems to detect and respond to light, gravity, temperature, and ...

Tác giả: Nguyễn Mỹ Hương viết 15:23 ngày 25/05/2018 chỉnh sửa

Gyroscopic Effects: Vector Aspects of Angular Momentum

Angular momentum is a vector and, therefore, has direction as well as magnitude . Torque affects both the direction and the magnitude of angular momentum. What is the direction of the angular momentum of a rotating object like the disk in [link]? The ...

Tác giả: Nguyễn Mỹ Hương viết 15:23 ngày 25/05/2018 chỉnh sửa

Tubular Reabsorption

With up to 180 liters per day passing through the nephrons of the kidney, it is quite obvious that most of that fluid and its contents must be reabsorbed. That recovery occurs in the PCT, loop of Henle, DCT, and the collecting ducts ([link] and [link]). Various ...

Tác giả: Nguyễn Mỹ Hương viết 15:23 ngày 25/05/2018 chỉnh sửa

DNA Replication in Eukaryotes

Eukaryotic genomes are much more complex and larger in size than prokaryotic genomes. The human genome has three billion base pairs per haploid set of chromosomes, and 6 billion base pairs are replicated during the S phase of the cell cycle. There are multiple ...

Tác giả: Nguyễn Mỹ Hương viết 15:23 ngày 25/05/2018 chỉnh sửa

Crime and the Law

How is a crime different from other types of deviance? (Photo courtesy of Duffman/Wikimedia Commons.) On December 16, 2011, 20-year-old Colton Harris-Moore was sentenced to seven years in prison by an Island County ...

Tác giả: Nguyễn Mỹ Hương viết 15:23 ngày 25/05/2018 chỉnh sửa

Excretion Systems

Microorganisms and invertebrate animals use more primitive and simple mechanisms to get rid of their metabolic wastes than the mammalian system of kidney and urinary function. Three excretory systems evolved in organisms before complex kidneys: vacuoles, flame ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

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Satellites and Kepler’s Laws: An Argument for Simplicity

Bone Formation and Development

Atoms, Isotopes, Ions, and Molecules: The Building Blocks

Introduction to One-Dimensional Kinematics

Plant Sensory Systems and Responses

Gyroscopic Effects: Vector Aspects of Angular Momentum

Tubular Reabsorption

DNA Replication in Eukaryotes

Crime and the Law

Excretion Systems

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