What's the difference between atom and particle?

Atom


Definition:

  • (n.) An ultimate indivisible particle of matter.
  • (n.) An ultimate particle of matter not necessarily indivisible; a molecule.
  • (n.) A constituent particle of matter, or a molecule supposed to be made up of subordinate particles.
  • (n.) The smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule.
  • (n.) Anything extremely small; a particle; a whit.
  • (v. t.) To reduce to atoms.

Example Sentences:

  • (1) It has been conformed that catalase from bovine liver eliminates only the pro R hydrogen atom from ethanol.
  • (2) The results demonstrated that K2PtCl4 was bound to a greater degree than CDDP in this system with 3-5 and 1-2 platinum atoms respectively, bound per transferrin molecule.
  • (3) Richard Bull Woodbridge, Suffolk • Why does Britain need Chinese money to build a new atomic generator ( Letters , 20 October)?
  • (4) The bond distances of Cu to Cl(1), Cl(2), N(3) and N(3') atoms are 2.299 (1), 2.267 (1), 1.985 (4) and 1.996 (3) A, respectively.
  • (5) The common atoms of the [3Fe-4S] and [4Fe-4S] cores agree within 0.1 A; the three common cysteinyl S gamma ligand atoms agree within 0.25 A.
  • (6) This result was confirmed by atomic absorption spectroscopy, which indicated a stoicheiometry for copper and manganese of approx.
  • (7) The inter-molecular similarity measure used is the number of atoms in the 3-D common substructure (CS) between the two molecules which are being compared.
  • (8) The risks are determined, mainly by expert committees, from the steadily growing information on exposed human populations, especially the survivors of the atomic bombs dropped in Japan in 1945.
  • (9) All N and O atoms except N(3) and O(4') participate in a three-dimensional hydrogen-bonding system.
  • (10) This suggestion is supported by EPR studies, which show that the iron atoms in Fe(III)L-globin are in two low electronic states.
  • (11) The molar refractivity has been shown to be a superior parameter for the description of the activity of sulphonamides than the sum of electronegativities of atoms making up a heterocyclic substituent in the sulphonamide molecule and molecular weight of the substituent.
  • (12) Binding to HSA occurs primarily with the imidazolidine and thiazolidine groups of levamisole as it has been demonstrated by selective changes in the relaxation times and the chemical shifts of the protons attached to the carbon atoms.
  • (13) Each repeat unit contains thirty amino acids and is thought to bind a zinc atom using two cysteines and two histidines as ligands.
  • (14) NADP+ bound at the C8 atom in the adenine moiety proved to be the most efficient ligand whereas that bound at the C3 atom of the ribose moiety was relatively inefficient.
  • (15) This structure is further characterized by approaches of both the carbonyl and the furan O atoms to ring H atoms with separations which are slightly less than the sum of the relevant van der Waals radii.
  • (16) The magnitude of improvement achieved is dependent upon field size, SSD, the atomic number of the foil material, and foil thickness.
  • (17) For the liver enzyme, the logarithm of the inhibition constant was linearly related to the number of carbon atoms in the saturated fatty acids whereas the muscle enzyme, which was generally more strongly inhibited, showed a nonlinear dependence.
  • (18) Results obtained from a such study are here compared with levels obtained from a comparative determination of the metals in the mosses by three other techniques: Differential pulse anodic stripping voltammetry (DPASV), Direct current plasma (atomic emission) spectroscopy (DCPS) and X-ray fluorescence (XRF) spectroscopy.
  • (19) It was hypothesized that the observed activity variation of the paracetamol analogues was based on the relative abilities of these compounds to undergo H atom loss at the phenolic oxygen, and on the relative stabilities of the resulting free-radical species.
  • (20) The resulting family of structures has a mean backbone rmsd of 0.63 A (N, C alpha, C', O atoms), excluding the segments containing residues 45-59 and 84-88.

Particle


Definition:

  • (n.) A minute part or portion of matter; a morsel; a little bit; an atom; a jot; as, a particle of sand, of wood, of dust.
  • (n.) Any very small portion or part; the smallest portion; as, he has not a particle of patriotism or virtue.
  • (n.) A crumb or little piece of concecrated host.
  • (n.) The smaller hosts distributed in the communion of the laity.
  • (n.) A subordinate word that is never inflected (a preposition, conjunction, interjection); or a word that can not be used except in compositions; as, ward in backward, ly in lovely.

Example Sentences:

  • (1) Lung sections of rats exposed to quartz particles were significantly different.
  • (2) In oleate-labeled particles, besides phosphatidic acid the product of PLD action radioactivity was also detected in diglyceride as a result of resident phosphatidate phosphohydrolase, which hydrolyzed the phosphatidic acid.
  • (3) Subunits maintained under the above ionic conditions were compared with 30S and 50S particles at low (6 mM) magnesium concentration with respect to the reactivity of individual ribosomal proteins to lactoperoxidase-catalyzed iodination.
  • (4) Charcoal particles coated with the lipid extract were prepared and the suspension inoculated intravenously into mice.
  • (5) These observations suggest that the liver secretes disk-shaped lipid bilayer particles which represent both the nascent form of high density lipoproteins and preferred substrate for lecithin-cholesterol acyltransferase.
  • (6) Intramembrane particles (IMP) were quantitatively assessed in the perikaryal plasma membranes of infundibular neurons.
  • (7) The mode of ribosome degradation under this condition is discussed in terms of differential appearance of these intermediate particles.
  • (8) When commercial chickens are infected in most sensitive one-day age, the virus titre does not exceed the value of 10(12) particles per 1 ml of plasma.
  • (9) Interaction of viable macrophages with cationic particles at 37 degrees C resulted in their "internalization" within vesicles and coated pits and a closer apposition between many segments of plasmalemma than with neutral or anionic substances.
  • (10) A 2-fold increase in the dissolution rate was observed when the same number of particles was immobilized without macrophages.
  • (11) Photolysis of the photosystem I particles induces a progressive depletion of phylloquinone, however, photochemistry as assayed at room temperature by the photooxidation of P-700 is unaffected.
  • (12) Taking into account the calculated volume and considering the triangular image as one face of the particle, it is suggested that eIF-3 has the shape of a flat triangular prism with a height of about 7 nm and the above-mentioned side-lengths.
  • (13) Well defined surface projections could be found in all particle types.
  • (14) Type C-like particles were found inter- and intracellularly in gland and vessel lumina and scattered in the connective tissue.
  • (15) The intracellular distribution and interaction of 19S ring-type particles from D. melanogaster have been analysed.
  • (16) Viral particles in the cultures and the brain were of various sizes and shapes; particles ranged from 70 to over 160 nm in diameter, with a variable position of dense nucleoids and less dense core shells.
  • (17) In the absence of adequate data exclusively from studies of inhaled particles in people, the results of inhalation studies using laboratory animals are necessary to estimate particle retention in exposed people.
  • (18) Depletion of extracellular Ca2+ by EGTA [ethylene glycol-bis(beta-aminoethyl ether)-N,N,N'N'-tetraacetic acid] attenuated both [Ca2+]i increase and superoxide production induced by particles.
  • (19) Completed RNA chains were released from the subviral particles.
  • (20) Problems of calculations and predictions on more than two particles moving are known in mathematics and physics since a long time already.