Thông tin liên hệ
Bài viết của Nguyễn Mỹ Hương

Introduction to Global Inequality

The Millennium Development Goals (MDG) were an ambitious start to the 21st century. (Photo courtesy of U.S. Mission Geneva/flickr) In 2000, the world entered a new millennium. In the spirit of a grand-scale New ...

Tác giả: Nguyễn Mỹ Hương viết 15:07 ngày 25/05/2018 chỉnh sửa

The Electromagnetic Spectrum

In this module we examine how electromagnetic waves are classified into categories such as radio, infrared, ultraviolet, and so on, so that we can understand some of their similarities as well as some of their differences. We will also find that there are ...

Tác giả: Nguyễn Mỹ Hương viết 15:07 ngày 25/05/2018 chỉnh sửa

Chemical Digestion and Absorption: A Closer Look

As you have learned, the process of mechanical digestion is relatively simple. It involves the physical breakdown of food but does not alter its chemical makeup. Chemical digestion, on the other hand, is a complex process that reduces food into its chemical ...

Tác giả: Nguyễn Mỹ Hương viết 15:07 ngày 25/05/2018 chỉnh sửa

Normal, Tension, and Other Examples of Forces

Forces are given many names, such as push, pull, thrust, lift, weight, friction, and tension. Traditionally, forces have been grouped into several categories and given names relating to their source, how they are transmitted, or their effects. The most ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Introduction to Rotational Motion and Angular Momentum

The mention of a tornado conjures up images of raw destructive power. Tornadoes blow houses away as if they were made of paper and have been known to pierce tree trunks with pieces of straw. They descend from clouds in ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Conductors and Electric Fields in Static Equilibrium

Conductors contain free charges that move easily. When excess charge is placed on a conductor or the conductor is put into a static electric field, charges in the conductor quickly respond to reach a steady state called electrostatic equilibrium . ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Barrier Defenses and the Innate Immune Response

The immune system can be divided into two overlapping mechanisms to destroy pathogens: the innate immune response, which is relatively rapid but nonspecific and thus not always effective, and the adaptive immune response, which is slower in its development ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Prevention and Treatment of Viral Infections

Viruses cause a variety of diseases in animals, including humans, ranging from the common cold to potentially fatal illnesses like meningitis ([link]). These diseases can be treated by antiviral drugs or by vaccines, but some viruses, such as HIV, are capable ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Speciation

The biological definition of species, which works for sexually reproducing organisms, is a group of actually or potentially interbreeding individuals. According to this definition, one species is distinguished from another by the possibility of matings between ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa

Embryonic Development

Throughout this chapter, we will express embryonic and fetal ages in terms of weeks from fertilization, commonly called conception. The period of time required for full development of a fetus in utero is referred to as gestation (gestare = “to ...

Tác giả: Nguyễn Mỹ Hương viết 15:06 ngày 25/05/2018 chỉnh sửa