What's the difference between gravel and surface?

Gravel


Definition:

  • (n.) Small stones, or fragments of stone; very small pebbles, often intermixed with particles of sand.
  • (n.) A deposit of small calculous concretions in the kidneys and the urinary or gall bladder; also, the disease of which they are a symptom.
  • (v. t.) To cover with gravel; as, to gravel a walk.
  • (v. t.) To run (as a ship) upon the gravel or beach; to run aground; to cause to stick fast in gravel or sand.
  • (v. t.) To check or stop; to embarrass; to perplex.
  • (v. t.) To hurt or lame (a horse) by gravel lodged between the shoe and foot.

Example Sentences:

  • (1) The dogs were housed in gravel-based, outdoor pens with doghouses in a high-altitude, high-sunshine level environment.
  • (2) Except for the blue guard towers it is drained of colour, a grey sameness coating gravel, fences and buildings.
  • (3) A former showgirl from the gravel pits of Wraysbury in Berkshire, Keeler was just 19 and was staying on the estate with her friend, patron and (some said) pimp, the society osteopath Stephen Ward.
  • (4) I found myself skirting the wood’s perimeter, a no-go zone of the past for us, and came next to a gravel-pocked face mined by rabbits with one of the burrows crowned with the skull of an ancestor.
  • (5) Opening up these magnificent forests for logging is like mining the great pyramids of Egypt for road gravel," said McKim.
  • (6) A potholed gravel road runs to a campsite at the mouth of the Mattole river and from there you can wander south down the coast for 25 miles before you come to the next road, at Shelter Cove.
  • (7) On the Sabbath the fleet of earthmovers that ordinarily grind the route to Lombrum – ferrying gravel to the detention centre building site where a crew of 300 labor to finish new staff accommodation – are resting in their compound.
  • (8) The reactivity of soils varies widely as geological and sedimentological conditions offer typical but different environments: gravels, chalk soil, clay, salt soils, sands, cave earths are examples of this wide variety, including atmospheric and biogenetic implications.
  • (9) The cellar level is on the average 5.4 times higher if the cellar has partially a gravel or earth floor than if the whole cellar surface is covered with a concrete floor.
  • (10) But it doesn't work that way: you may have "less gravel", but most writers agree that you can only have "fewer pebbles", not "less pebbles".
  • (11) This biomass was computed from that of the organisms and associated naphthalene oxidation activity washed from the gravel compared with the original suspension.
  • (12) We can talk about "many pebbles" but not "much pebbles", "much gravel" but not "many gravel".
  • (13) Ultrasound detected 59 of 60 foreign bodies, including all cubes of meat embedded with gravel, cactus spine, plastic, metal, and wood.
  • (14) Tulisa led, and did so with panache and some beautiful gravel.
  • (15) This means putting a layer of bark, grass cuttings, manure, even gravel on top of the soil to trap moisture in the earth, or at least slow down evaporation.
  • (16) Aged 102, Bi Kidude, the gravel-voiced singer known her raucous sense of humour and her love of cigarettes, suddenly vanished from her home.
  • (17) Trying to solve an actual problem of enhancing the spontaneous passage of fragments, "calculous trails" and gravel in the patients who underwent remote lithotripsy the authors used the technique of local vibrotherapy in 54 postoperative patients.
  • (18) We are on a gravel track and have been driving for a long time.
  • (19) One of its largest islands is gentle-paced Brønnøya, with its apple orchards, gravel roads and beaches.
  • (20) Photograph: Water Literacy Foundation In Masagi’s pit-based system, permanent structures of mud, sand, soil, gravel and boulders are built, eight per acre of farmland, and partially filled with a mix of gravel and sand.

Surface


Definition:

  • (n.) The exterior part of anything that has length and breadth; one of the limits that bound a solid, esp. the upper face; superficies; the outside; as, the surface of the earth; the surface of a diamond; the surface of the body.
  • (n.) Hence, outward or external appearance.
  • (n.) A magnitude that has length and breadth without thickness; superficies; as, a plane surface; a spherical surface.
  • (n.) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion.
  • (v. t.) To give a surface to; especially, to cause to have a smooth or plain surface; to make smooth or plain.
  • (v. t.) To work over the surface or soil of, as ground, in hunting for gold.

Example Sentences:

  • (1) The resulting dose distribution is displayed using traditional 2-dimensional displays or as an isodose surface composited with underlying anatomy and the target volume.
  • (2) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
  • (3) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
  • (4) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
  • (5) In the surface epithelial cells, the basolateral cell surface showed moderate enzymatic activity.
  • (6) Such an increase in antibody binding occurred simultaneously with an increase in the fluidity of surface lipid regions, as monitored by fluorescence depolarization of 1-(trimethylammoniophenyl)-6-phenyl-1,3,5-hexatriene.
  • (7) The role of Ca2+ in cell agglutination may be either to activate the cell-surface dextran receptor or to form specific intercellular Ca2+ bridges.
  • (8) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
  • (9) Even with hepatic lipase, phospholipid hydrolysis could not deplete VLDL and IDL of sufficient phospholipid molecules to account for the loss of surface phospholipid that accompanies triacylglycerol hydrolysis and decreasing core volume as LDL is formed (or for conversion of HDL2 to HDL3).
  • (10) A total of 555 caries lesions were registered on proximal surfaces, 49.1% being primary lesions in the enamel, 21.4% primary lesions into the dentin and 29.5% secondary lesions.
  • (11) Contact angles of Silafocon A and PMMA were relatively uninfluenced by front surface radii between 7.7 and 8.85 and 7.3 to 8.8 mm, respectively.
  • (12) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
  • (13) Together these observations suggest that cytotactin is an endogenous cell surface modulatory protein and provide a possible mechanism whereby cytotactin may contribute to pattern formation during development, regeneration, tumorigenesis, and wound healing.
  • (14) Our Ph1-positive ALL revealed B-cell lineage leukemia, since their surface phenotype were Ia+ and CD10+ and they have rearranged immunoglobulin JH genes.
  • (15) The complete nucleotide sequence of the gene for a cell surface protein antigen (SpaA) of Streptococcus sobrinus MT3791 (serotype g) was determined.
  • (16) To investigate the mechanism of enhanced responsiveness of cholesterol-enriched human platelets, we compared stimulation by surface-membrane-receptor (thrombin) and post-receptor (AlF4-) G-protein-directed pathways.
  • (17) Lysis of EAC4b,3b cellular intermediates formed to contain a low surface amount of C3b was more inhibited than was lysis of cells formed with a standard amount of C3b on the surface.
  • (18) After either 5 or 10 days of culture with both cytokines, intense immunofluorescent staining for Ia could be identified on the surface of greater than 80-90% of the viable islet cells.
  • (19) Within the capillary-perfused mucosa and muscularis (between 50 and 2000 microns from the urothelial surface), concentrations decreased by 50% for each 500-microns distance.
  • (20) Displacement of the surface of the cornea of bovine eyes after disruption of intact structures was investigated by means of holographic interferometry.