What's the difference between packing and piston?

Packing


Definition:

  • (p. pr. & vb. n.) of Pack
  • (n.) The act or process of one who packs.
  • (n.) Any material used to pack, fill up, or make close.
  • (n.) A substance or piece used to make a joint impervious
  • (n.) A thin layer, or sheet, of yielding or elastic material inserted between the surfaces of a flange joint.
  • (n.) The substance in a stuffing box, through which a piston rod slides.
  • (n.) A yielding ring, as of metal, which surrounds a piston and maintains a tight fit, as inside a cylinder, etc.
  • (n.) Same as Filling.
  • (n.) A trick; collusion.

Example Sentences:

  • (1) The predicted non-Lorentzian line shapes and widths were found to be in good agreement with experimental results, indicating that the local orientational order (called "packing" by many workers) in the bilayers of small vesicles and in multilamellar membranes is substantially the same.
  • (2) Squadron Leader Kevin Harris, commander of the Merlins at Camp Bastion, the main British base in Helmand, praised the crews, adding: "The Merlins will undergo an extensive programme of maintenance and cleaning before being packed up, ensuring they return to the UK in good order."
  • (3) We have compared two new methods (a solvent extraction technique and a method involving a disposable, pre-packed reverse phase chromatography cartridge) with the standard method for determining the radiochemical purity of 99Tcm-HMPAO.
  • (4) Solely infectious waste become removed hospital-intern and -extern on conditions of hygienic prevention, namely through secure packing during the transport, combustion or desinfection.
  • (5) Glucose, osmotic pressure, packed cell volume, PFC by combustion and volatilization were also measured in blood samples.
  • (6) These levels are sufficient to maintain normal in vivo rates of mRNA and rRNA synthesis, but the average density of packing of polymerases on DNA is considerably less than the maximum density predicted by Miller and Bakken (1972), suggesting that initiation of polymerases of DNA is a limiting factor in the control of transcription.
  • (7) The crystallographic parameters of four different unit cells, all of which are based on hexagonal packing arrangements, indicate that the fundamental unit of the complex is composed of six gene 5 protein dimers.
  • (8) In 67 patinets with abnormal mammograms, breast angiography was performed using a "lo-dose vaccum packed film screen system".
  • (9) The cells are predominantly monopolar, tightly packed, and are flattened at the outer border of the ring.
  • (10) The majority of intensively stained and densely packed cells have been observed in tv nucleus.
  • (11) The wall of the yolk sac thickens as a result of this infolding and the densely packed capillaries.
  • (12) All 17 candidates are going to be participating in debate night and I think that’s a wonderful opportunity Reince Priebus Republican party officials have defended the decision to limit participation, pointing out that the chasing pack will get a chance to debate separately before the main event.
  • (13) The supporters – many of them wearing Hamas green headbands and carrying Hamas flags – packed the open-air venue in rain and strong winds to celebrate the Islamist organisation's 25th anniversary and what it regards as a victory in last month's eight-day war with Israel.
  • (14) Changes in the determinants of blood viscosity (packed cell volume, plasma viscosity, red cell aggregation, and red cell deformability) were studied on day 1 and day 5.
  • (15) They had watched him celebrate mass with three million pilgrims on the packed-out shores of Copacabana beach .
  • (16) In terms of segmental motion and anisotropy of packing the lipoprotein-X bilayer closely resembles a model bilayer system consisting of phosphatidylcholine, lysophosphatidylcholine, sphingomyelin and cholesterol mixed in the same molar ratio as in lipoprotein-X.
  • (17) There is little doubt that when it opens next Thursday, One New Change will be jam-packed with City workers and tourists.
  • (18) Treatment with chloroquine and primaquine, together with packed red cell transfusions, was successful in eliminating both the malaria parasites and the leukaemoid blood picture.
  • (19) The authors consider that this device increases safety during this potentially hazardous procedure by eliminating the flammable polyvinyl chloride endotracheal tube and cottonoid packings most frequently used during this procedure.
  • (20) The media, smelling blood, has fallen into pack formation.

Piston


Definition:

  • (n.) A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes.

Example Sentences:

  • (1) The buccal glands of adults of the Southern Hemisphere lamprey Geotria australis consist of a pair of small, bean-shaped, hollow sacs, embedded within the basilaris muscle in the region below the eyes and to either side of the piston cartilage.
  • (2) Both groups were ventilated with a constant-volume piston ventilator.
  • (3) To give variations in the peak flow-rate (from pulsatile to intermediate to non-pulsatile), three types of blood pump (piston-bellows, screw, and centrifugal) were applied to dogs.
  • (4) The players were each to be given a present: Dietmar Hamann (he's German, tee hee hee) got a copy of Mein Kampf, while the Italian Alessandro Pistone, perceived as lacking fight, was given a sheep's heart.
  • (5) After 4 minutes of ventricular fibrillation CPR was performed with the use of a pneumatic piston compressor.
  • (6) Sinusoidal volume changes were delivered through a tracheostomy by a piston pump driven by a linear motor.
  • (7) In groups I-III it is possible to discover whether the piston is too long or too short, whether it is dislocated or has slipped.
  • (8) Pressures and flows from this pump were compared to a Harvard Apparatus pulsatile piston pump.
  • (9) The vein graft technique (nine cases) is very much inferior to the piston technique.
  • (10) Results of partial stapedectomy with the formation of small fenestra and the use of teflon piston prostheses in the period of 1980-1984 are shown.
  • (11) They suck, by means of a stylet acting as a piston, all components of the muscle cell which develops into a nurse cell, into their oral cavity.
  • (12) A pneumatically driven piston was used to cause a mechanical stress (10-150 N) on the stabilized tooth crown for 30 s, with instantaneous onset and release.
  • (13) They recorded an auditory gain in more than half the patients (early: PORP 97%, TORP 73%, piston 52%; plasty transplants of ossicles obtained from subjects who died accidentallyĕ For preserfic Council of the Ministry of Health, Czech Socialist Republic, recommended, based on the clinical tests, the manufacture of silastic prostheses of the middle ear.
  • (14) It is designed as a positive displacement pump, with blood allowed to collect in a valved cavity from which it is ejected by the reciprocating action of a piston.
  • (15) The ejection force is wholly produced by the compressed coil spring and is transmitted to the piston in the blood chamber by a rod.
  • (16) The 4 modes of failure characterizing stem-type component progressive loosening mechanisms consisted of stem pistoning within the acrylic (3.3%), cement-embedded stem pistoning with the femur (5.1%), medial midstem pivot (2.5%), calcar pivot (0.7%) and bending (fatigue) cantilever (3.3%).
  • (17) In model 1, diaphragmatic descent was treated as if it were a "piston in a cylinder."
  • (18) Insertion, which takes only a few minutes, is accomplished with a plastic tube and piston device.
  • (19) The expanding ameroid pushes a piston with a concave extension (makrolon) a maximum of 2 mm against the artery, which is fixed to the metal housing by a teflon band (width: 4 mm, thickness: 0.5 mm).
  • (20) The novel design of this pump incorporates two rack-mounted pistons, driven into opposing cylinders by a micro-stepping motor.