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Introduction to Photolithography - WC, BLF, PA, Hard and Soft baking

By: HWC, Views: 6188

Prior to use, wafers are chemically cleaned to remove particulate matter on the surface as well as any traces of organic, ionic, and metallic impurities. Barrier Layer Formation After cleaning, the silicon wafer is covered with the material which will serve as a barrier layer. The most commo...

Introduction to Diabetes

By: Administrator, Views: 9799

Hyposecretion or inadequate use of insulin may result in diabetes mellitus (DM). Hypersecretion of insulin may result in hyperinsulinism. Diabetes mellitus is the most common endocrine system disorder of childhood. Symptoms include: Polyuria Polydipsia Polyphagia Management of DM durin...

Metaphase I Animation

By: HWC, Views: 4650

This is a cell during metaphase I. For each pair of chromosomes, any gamete produced by this cell could contain either the maternal chromosome or the paternal chromosome. How many different combinations of maternal and paternal chromosomes are possible in the gametes produced by a cell with th...

Leukemia

By: Administrator, Views: 10164

Leukemia is a type of cancer that affects the blood and bone marrow. Leukemia begins in a cell in the bone marrow. The cell undergoes a change and becomes a type of leukemia cell. Once the marrow cell undergoes a leukemic change, the leukemia cells may grow and survive better than normal cells.

Rh blood type and complications during pregnancy & Fertilization

By: HWC, Views: 4064

Complications can arise if an Rh- woman is impregnated by an Rh+ man. The fetus maybe Rh+. During childbirth, some of the fetal Rh+ cells may leak into the maternal bloodstream. The woman's immune system views the Rh+ as foreign and makes antibodies against it. If the woman becomes pr...

Wound Cultures

By: Administrator, Views: 9639

Wound Culture is performed on wound exudate to determine the presence of microorganisms and to identify the specific type.

Neuron Type Animation

By: Administrator, Views: 9625

Interneurons: - Are called central or associative neurons. - Located entirely within the central nervous system. - They function to mediate impulses between sensory and motor neurons.

HIV Infection: Viral life cycle

By: HWC, Views: 6013

The series of steps that HIV follows to multiply in the body. The process begins when HIV encounters a CD4 cell. The seven steps in the HIV life cycle are: 1) binding; 2) fusion; 3) reverse transcription; 4) integration; 5) replication; 6) assembly; and 7) budding. Many viruses f...

Eczema

By: Administrator, Views: 9751

Eczema is a condition where patches of skin become inflamed, itchy, red, cracked, and rough. Blisters may sometimes occur. Different stages and types of eczema affect 31.6 percent of people in the United States. The word "eczema" is also used specifically to talk about atopic dermatitis, the most...