Thông tin liên hệ
Bài viết của Nguyễn Mỹ Hương

Energy and Heat Balance

The body tightly regulates the body temperature through a process called thermoregulation , in which the body can maintain its temperature within certain boundaries, even when the surrounding temperature is very different. The core temperature of the body ...

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

Organs and Structures of the Respiratory System

The major organs of the respiratory system function primarily to provide oxygen to body tissues for cellular respiration, remove the waste product carbon dioxide, and help to maintain acid-base balance. Portions of the respiratory system are also used for ...

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

Biogeochemical Cycles

Energy flows directionally through ecosystems, entering as sunlight (or inorganic molecules for chemoautotrophs) and leaving as heat during the transfers between trophic levels. Rather than flowing through an ecosystem, the matter that makes up living organisms ...

Tác giả: Nguyễn Mỹ Hương viết 15:14 ngày 25/05/2018 chỉnh sửa

Introduction to Magnetism

The magnificent spectacle of the Aurora Borealis, or northern lights, glows in the northern sky above Bear Lake near Eielson Air Force Base, Alaska. Shaped by the Earth’s magnetic field, this light is produced by radiation ...

Tác giả: Nguyễn Mỹ Hương viết 15:14 ngày 25/05/2018 chỉnh sửa

Human Pregnancy and Birth

Pregnancy begins with the fertilization of an egg and continues through to the birth of the individual. The length of time of gestation varies among animals, but is very similar among the great apes: human gestation is 266 days, while chimpanzee gestation is ...

Tác giả: Nguyễn Mỹ Hương viết 15:14 ngày 25/05/2018 chỉnh sửa

Exercise, Nutrition, Hormones, and Bone Tissue

All of the organ systems of your body are interdependent, and the skeletal system is no exception. The food you take in via your digestive system and the hormones secreted by your endocrine system affect your bones. Even using your muscles to engage in exercise ...

Tác giả: Nguyễn Mỹ Hương viết 15:14 ngày 25/05/2018 chỉnh sửa

Oxidative Phosphorylation

You have just read about two pathways in glucose catabolism—glycolysis and the citric acid cycle—that generate ATP. Most of the ATP generated during the aerobic catabolism of glucose, however, is not generated directly from these pathways. Rather, it is derived ...

Tác giả: Nguyễn Mỹ Hương viết 15:13 ngày 25/05/2018 chỉnh sửa

Introduction to Applications of Nuclear Physics

Tori Randall, Ph.D., curator for the Department of Physical Anthropology at the San Diego Museum of Man, prepares a 550-year-old Peruvian child mummy for a CT scan at Naval Medical Center San Diego. (credit: U.S. Navy ...

Tác giả: Nguyễn Mỹ Hương viết 15:13 ngày 25/05/2018 chỉnh sửa

Impulse

The effect of a force on an object depends on how long it acts, as well as how great the force is. In [link], a very large force acting for a short time had a great effect on the momentum of the tennis ball. A small force could cause the same change in ...

Tác giả: Nguyễn Mỹ Hương viết 15:13 ngày 25/05/2018 chỉnh sửa

Cellular Differentiation

How does a complex organism such as a human develop from a single cell—a fertilized egg—into the vast array of cell types such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, the process of ...

Tác giả: Nguyễn Mỹ Hương viết 15:13 ngày 25/05/2018 chỉnh sửa