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Bài viết của Trần Bảo Ngọc

Groups of Protists

In the span of several decades, the Kingdom Protista has been disassembled because sequence analyses have revealed new genetic (and therefore evolutionary) relationships among these eukaryotes. Moreover, protists that exhibit similar morphological features may ...

Tác giả: Trần Bảo Ngọc viết 15:11 ngày 25/05/2018 chỉnh sửa

Radiation

You can feel the heat transfer from a fire and from the Sun. Similarly, you can sometimes tell that the oven is hot without touching its door or looking inside—it may just warm you as you walk by. The space between the Earth and the Sun is largely empty, ...

Tác giả: Trần Bảo Ngọc viết 15:11 ngày 25/05/2018 chỉnh sửa

Circulation and the Central Nervous System

The CNS is crucial to the operation of the body, and any compromise in the brain and spinal cord can lead to severe difficulties. The CNS has a privileged blood supply, as suggested by the blood-brain barrier. The function of the tissue in the CNS is crucial to ...

Tác giả: Trần Bảo Ngọc viết 15:11 ngày 25/05/2018 chỉnh sửa

Introduction to Electric Current, Resistance, and Ohm's Law

Electric energy in massive quantities is transmitted from this hydroelectric facility, the Srisailam power station located along the Krishna River in India, by the movement of charge—that is, by electric ...

Tác giả: Trần Bảo Ngọc viết 15:10 ngày 25/05/2018 chỉnh sửa

Chromosomal Basis of Inherited Disorders

Inherited disorders can arise when chromosomes behave abnormally during meiosis. Chromosome disorders can be divided into two categories: abnormalities in chromosome number and chromosomal structural rearrangements. Because even small segments of chromosomes ...

Tác giả: Trần Bảo Ngọc viết 15:10 ngày 25/05/2018 chỉnh sửa

Introduction to Health and Medicine

Vaccinations can slow or halt the spread of disease, but some families refuse them. (Photo courtesy of USACE Europe District/flickr) In 2010, a pertussis (whooping cough) outbreak in California sickened 9,143 people and ...

Tác giả: Trần Bảo Ngọc viết 15:10 ngày 25/05/2018 chỉnh sửa

Regulation of Body Processes

Hormones have a wide range of effects and modulate many different body processes. The key regulatory processes that will be examined here are those affecting the excretory system, the reproductive system, metabolism, blood calcium concentrations, growth, and ...

Tác giả: Trần Bảo Ngọc viết 15:10 ngày 25/05/2018 chỉnh sửa

Drugs that Affect the Autonomic System

An important way to understand the effects of native neurochemicals in the autonomic system is in considering the effects of pharmaceutical drugs. This can be considered in terms of how drugs change autonomic function. These effects will primarily be based on ...

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

Introduction to Social Movements and Social Change

When people join together, such as these 2011 Egyptian protestors, they are engaging in collective behavior. (Photo courtesy of Agent 021/Wikimedia Commons) In January 2011, Egypt erupted in protests against the stifling rule ...

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

Kinetic Theory: Atomic and Molecular Explanation of Pressure and Temperature

We have developed macroscopic definitions of pressure and temperature. Pressure is the force divided by the area on which the force is exerted, and temperature is measured with a thermometer. We gain a better understanding of pressure and temperature from ...

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