Danh sách bài viết của Nguyễn Mỹ Hương

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Bài viết của Nguyễn Mỹ Hương

How Genes Are Regulated

For a cell to function properly, necessary proteins must be synthesized at the proper time. All organisms and cells control or regulate the transcription and translation of their DNA into protein. The process of turning on a gene to produce RNA and protein is ...

Tác giả: Nguyễn Mỹ Hương viết 15:10 ngày 25/05/2018 chỉnh sửa

Introduction to Linear Momentum and Collisions

Each rugby player has great momentum, which will affect the outcome of their collisions with each other and the ground. (credit: ozzzie, Flickr) We use the term momentum in various ways in everyday language, and most of ...

Tác giả: Nguyễn Mỹ Hương viết 15:10 ngày 25/05/2018 chỉnh sửa

Nuclear Weapons

The world was in turmoil when fission was discovered in 1938. The discovery of fission, made by two German physicists, Otto Hahn and Fritz Strassman, was quickly verified by two Jewish refugees from Nazi Germany, Lise Meitner and her nephew Otto Frisch. ...

Tác giả: Nguyễn Mỹ Hương viết 15:10 ngày 25/05/2018 chỉnh sửa

The Thoracic Cage

The thoracic cage (rib cage) forms the thorax (chest) portion of the body. It consists of the 12 pairs of ribs with their costal cartilages and the sternum ([link]). The ribs are anchored posteriorly to the 12 thoracic vertebrae (T1–T12). The thoracic cage ...

Tác giả: Nguyễn Mỹ Hương viết 15:10 ngày 25/05/2018 chỉnh sửa

Anatomical Terminology

Anatomists and health care providers use terminology that can be bewildering to the uninitiated. However, the purpose of this language is not to confuse, but rather to increase precision and reduce medical errors. For example, is a scar “above the ...

Tác giả: Nguyễn Mỹ Hương viết 15:10 ngày 25/05/2018 chỉnh sửa

Half-Life and Activity

Unstable nuclei decay. However, some nuclides decay faster than others. For example, radium and polonium, discovered by the Curies, decay faster than uranium. This means they have shorter lifetimes, producing a greater rate of decay. In this section we ...

Tác giả: Nguyễn Mỹ Hương viết 15:09 ngày 25/05/2018 chỉnh sửa

Muscles of the Pectoral Girdle and Upper Limbs

Muscles of the shoulder and upper limb can be divided into four groups: muscles that stabilize and position the pectoral girdle, muscles that move the arm, muscles that move the forearm, and muscles that move the wrists, hands, and fingers. The pectoral girdle ...

Tác giả: Nguyễn Mỹ Hương viết 15:09 ngày 25/05/2018 chỉnh sửa

Global Stratification and Classification

Just as America’s wealth is increasingly concentrated among its richest citizens while the middle class slowly disappears, global inequality involves the concentration of resources in certain nations, significantly ...

Tác giả: Nguyễn Mỹ Hương viết 15:09 ngày 25/05/2018 chỉnh sửa

Ecology of Ecosystems

Life in an ecosystem is often about competition for limited resources, a characteristic of the theory of natural selection. Competition in communities (all living things within specific habitats) is observed both within species and among different species. The ...

Tác giả: Nguyễn Mỹ Hương viết 15:09 ngày 25/05/2018 chỉnh sửa

Hemostasis

Platelets are key players in hemostasis , the process by which the body seals a ruptured blood vessel and prevents further loss of blood. Although rupture of larger vessels usually requires medical intervention, hemostasis is quite effective in dealing with ...

Tác giả: Nguyễn Mỹ Hương viết 15:09 ngày 25/05/2018 chỉnh sửa

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How Genes Are Regulated

Introduction to Linear Momentum and Collisions

Nuclear Weapons

The Thoracic Cage

Anatomical Terminology

Half-Life and Activity

Muscles of the Pectoral Girdle and Upper Limbs

Global Stratification and Classification

Ecology of Ecosystems

Hemostasis

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