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2. Deep reactive-ion etching - Wikipedia

   en.wikipedia.org/wiki/Deep_reactive-ion_etching

   DRIE of glass requires high plasma power, which makes it difficult to find suitable mask materials for truly deep etching. Polysilicon and nickel are used for 10–50 μm etched depths. In DRIE of polymers, Bosch process with alternating steps of SF 6 etching and C 4 F 8 passivation take place. Metal masks can be used, however they are ...

3. Bose gas - Wikipedia

   en.wikipedia.org/wiki/Bose_gas

   The thermodynamics of an ideal Bose gas is best calculated using the grand canonical ensemble.The grand potential for a Bose gas is given by: = ⁡ = ⁡ (). where each term in the sum corresponds to a particular single-particle energy level ε i; g i is the number of states with energy ε i; z is the absolute activity (or "fugacity"), which may also be expressed in terms of the chemical ...

4. Bosch reaction - Wikipedia

   en.wikipedia.org/wiki/Bosch_reaction

   The Bosch reaction is a catalytic chemical reaction between carbon dioxide (CO 2) and hydrogen (H 2) that produces elemental carbon (C,graphite), water, and a 10% return of invested heat. CO 2 is usually reduced by H 2 to carbon in presence of a catalyst (e.g. iron (Fe)) and requires a temperature level of 530–730 °C (986–1,346 °F).

5. Bose–Einstein condensate - Wikipedia

   en.wikipedia.org/wiki/Bose–Einstein_condensate

   As such, condensation can be associated with phase transition, and the macroscopic occupation of the state is the order parameter. Bose–Einstein condensate was first predicted, generally, in 1924–1925 by Albert Einstein, [2] crediting a pioneering paper by Satyendra Nath Bose on the new field now known as quantum statistics. [3]

6. Two-phase flow - Wikipedia

   en.wikipedia.org/wiki/Two-phase_flow

   Different modes of two-phase flows. In fluid mechanics, two-phase flow is a flow of gas and liquid — a particular example of multiphase flow.Two-phase flow can occur in various forms, such as flows transitioning from pure liquid to vapor as a result of external heating, separated flows, and dispersed two-phase flows where one phase is present in the form of particles, droplets, or bubbles in ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Joule–Thomson effect - Wikipedia

   en.wikipedia.org/wiki/Joule–Thomson_effect

   This amount of gas has a volume of V 1 = m v 1 in the region at pressure P 1 (region 1) and a volume V 2 = m v 2 when in the region at pressure P 2 (region 2). Then in region 1, the "flow work" done on the amount of gas by the rest of the gas is: W 1 = m P 1 v 1. In region 2, the work done by the amount of gas on the rest of the gas is: W 2 = m ...

9. Vapor-compression refrigeration - Wikipedia

   en.wikipedia.org/wiki/Vapor-compression...

   A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.