Definitions for "HPA"
Hectopascal- A unit of pressure equal to a millibar (1 hPa = 1 mb).
Hectopascals (= Millibar)
(abbr): hectopascal - equivalent to a millibar (q.v.). An attempt to use SI units without doing away with the idea of millibars (from the c.g.s. system). [ 1 hPa=100 Pa (or N/m2)
The newest and best gas used to propel paintballs, very expensive when compared to CO2 but much less volital.
High pressure compressed air (3000 to 5000 psi) is usually used instead of CO2 in tournament paintball. The use of HPA requires specialized high-pressure tanks and regulators, which lower the output pressure to what the markers can handle. HPA tanks can store nitrogen or compressed air--the performance of both is identical. HPA tanks can be constructed of aluminium or steel for 3000psi tanks, or a small aluminium or steel canister surrounded and bonded to carbon fibre for extra strength to store 4500 or 5000psi while reducing weight.
Compressed Air High-pressure compressed air (3000 to 4500 psi) is usually used instead of CO2 in tournament paintball. The use of HPA requires specialized high pressure tanks and regulators, which lower the output pressure to what paintball guns need.
Hypothalamic-Pituitary-Adrenal
Hypothalamo-Pituitary-Axis
Hypothalamus-Pituitary-adrenal Axis
Keywords:  amplify, satcom, twta, klystron, upline
High Power Amplifier, SATCOM component
(High Power Amplifier). An amplifier that can handle very high RF power.
High Power Amplifier. A device that accepts a relatively weak input signal and boosts it to a power level that is suitable for transmission over an earth-space link.
Keywords:  maldi, tof, picolinic, matrix, hydroxy
A form of passive matrix LCD display that improves the response time of the display. HPA screens still suffer from the same contrast problems that make...
(Hydroxy Picolinic Acid) Matrix used for MALDI-TOF MS of DNA
hybridization protection assay. a process that hybridizes the amplicon to singlestranded nucleic acid probes that are labeled with an Acridinium Ester (AE) molecule and then it selects and detects the hybridized probes.
Hubbard Professional Auditor.
"Half Page Ad" - This is a large ad, usually pretty graphically intense and about 600x400 pixels. Often they're sliced and supplied as a .zip file by sponsors, and they're pretty much the biggest ad you'll ever get away with on free sites and galleries. I find they work best on main pages of free sites.
Keywords:  airplane, driven, human
human-driven airplane.
Keywords:  hydraulic, approval, project
Hydraulic Project Approval.
Health Practitioners Association
Health Plan Administration
Health Protection Agency
Keywords:  hash, publishers, association
Hash Publishers Association.
Keywords:  historic, act, places
Historic Places Act 1993 (NZ)