### insulation:

Attic insulation
* is as important for cooling in the summer as it is for heating in the winter
  - installed in all uninsulated ceilings of mobile homes and multi-family units
  - more important than exterior wall insulation
* slows the rate of heat transfer between the attic and the room below.

Ceiling insulation
* improves comfort and cuts electricity costs.
* is critical because heat rises and takes the path of least resistance
  - the most cost effective type of home insulation

### insulation:

Cellulose insulation
* Most cellulose insulation creates air infiltration barriers
* can be a satisfactory insulating material if it is used conscientiously.
* form of thermal insulation used in houses and other residential buildings.
* is blown-in from the interior
  - made from recycled newspapers
  - manufactured from recycled newspaper
  - one attractive alternative to fiberglass
  - produced from recovered wood pulp, primarily recycled newsprint
* makes efficient use of natural resources
  - homes safer by slowing the spread of fire
* provides better protection from air infiltration than traditional fiberglass.

Foam insulation
* Most foam insulations emit very noxious fumes during a fire.
* can attract insects.

Icynene insulation
* is available in the United States, Canada, Mexico, Japan, and Korea.
* water-based formula that contains no formaldehyde, CFCs or HCFCs.

Rigid insulation
* comes in pre-formed boards which are bonded with a thermosetting resin
  - sheets, and is installed below a slab or on surfaces
* is applied to the top of roof decking with no space left for ventilation.
* provides functions.

Synthetic insulation
* provides warmth.
* retain loft when wet, dry quickly and are less expensive than down.

Thermal insulation
* is made by foaming material of high efficiency
  - of ceramic fiber
* plays a significant role in both the consumption and conservation of energy.

### insulin:

Elevated insulin
* appears naturally in some populations, and in at least one common condition.
* increases the risk for diabetes, a major risk factor for cardiovascular disease.

Excess insulin
* can lead to obesity, diabetes and high cholesterol
  - result in hypoglycemia and adult onset diabetes
* is detrimental to weight management
  - the primary accelerator of the aging process
* prevents proper egg maturation.

High insulin
* is tied to heart disease risk.
* known risk factor for heart disease.

Hormone insulin
* breaks down sugar.
* regulates blood sugar levels

Human insulin
* Some human insulin is produced by bacteria.
* are shorter acting than animal insulins ofthe same type.
* consists of two different peptide chains.
* forms dimers in concentrated solutions, and hexamers in the presence of zinc.
* is obtained by recombinant DNA technique
  - seen as one of the first products of biotechnology
  - the most commonly available insulin because that is what humans use
* mays have effects
  - side effects

Injectable insulin
* Most injectable insulins are forms of human insulin.
* tends to keep levels consistently high.

Insufficient insulin
* leads to a dangerously high level of sugar in the blood.
* produces high blood sugar, as in diabetes mellitus.

### insulin:

Porcine insulin
* has one different amino acid and bovine insulin has three different amino acids.
* is especially close to the human version.
+ Insulin: Biochemistry
  * Human insulin is a peptide hormone composed of 51 amino acids and has a molecular weight of 5808 Da. The islets of Langerhans in the pancreas produces insulin. Insulin's structure varies slightly between species of animals. Insulin from different animal sources has different effects on the human carbohydrate metabolism process. Porcine insulin is especially close to the human version. So, people with diabetes can take in insulin extracted from pigs instead of producing their own insulin.