Thông tin liên hệ
Bài viết của Trần Bảo Ngọc

Some Questions We Know to Ask

Throughout the text we have noted how essential it is to be curious and to ask questions in order to first understand what is known, and then to go a little farther. Some questions may go unanswered for centuries; others may not have answers, but some ...

Tác giả: Trần Bảo Ngọc viết 15:17 ngày 25/05/2018 chỉnh sửa

Introduction to Temperature, Kinetic Theory, and the Gas Laws

The welder’s gloves and helmet protect him from the electric arc that transfers enough thermal energy to melt the rod, spray sparks, and burn the retina of an unprotected eye. The thermal energy can be felt on exposed skin ...

Tác giả: Trần Bảo Ngọc viết 15:17 ngày 25/05/2018 chỉnh sửa

Phylum Porifera

The invertebrates, or invertebrata , are animals that do not contain bony structures, such as the cranium and vertebrae. The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera : the sponges ([link]). Parazoans ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

RNA Processing in Eukaryotes

After transcription, eukaryotic pre-mRNAs must undergo several processing steps before they can be translated. Eukaryotic (and prokaryotic) tRNAs and rRNAs also undergo processing before they can function as components in the protein synthesis machinery. ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

Types of Muscle Fibers

Two criteria to consider when classifying the types of muscle fibers are how fast some fibers contract relative to others, and how fibers produce ATP. Using these criteria, there are three main types of skeletal muscle fibers. Slow oxidative (SO) fibers ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

The Thyroid Gland

A butterfly-shaped organ, the thyroid gland is located anterior to the trachea, just inferior to the larynx ([link]). The medial region, called the isthmus, is flanked by wing-shaped left and right lobes. Each of the thyroid lobes are embedded with ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

The Difference Between Sex and Gender

While the biological differences between males and females are fairly straightforward, the social and cultural aspects of being a man or woman can be complicated. (Photo courtesy of FaceMePLS/flickr) When filling ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

World Energy Use

Energy is an important ingredient in all phases of society. We live in a very interdependent world, and access to adequate and reliable energy resources is crucial for economic growth and for maintaining the quality of our lives. But current levels of ...

Tác giả: Trần Bảo Ngọc viết 15:16 ngày 25/05/2018 chỉnh sửa

Phase Change and Latent Heat

So far we have discussed temperature change due to heat transfer. No temperature change occurs from heat transfer if ice melts and becomes liquid water (i.e., during a phase change). For example, consider water dripping from icicles melting on a roof warmed ...

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

Nervous System Disorders

A nervous system that functions correctly is a fantastically complex, well-oiled machine—synapses fire appropriately, muscles move when needed, memories are formed and stored, and emotions are well regulated. Unfortunately, each year millions of people in the ...

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