What's the difference between shelf and shield?

Shelf


Definition:

  • (v. i.) A flat tablet or ledge of any material set horizontally at a distance from the floor, to hold objects of use or ornament.
  • (v. i.) A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships.
  • (v. i.) A stratum lying in a very even manner; a flat, projecting layer of rock.
  • (v. i.) A piece of timber running the whole length of a vessel inside the timberheads.

Example Sentences:

  • (1) Since he was created, he has appeared at several robotic fairs across China, but spends most of his time in deep meditation on an office shelf in Longquan.
  • (2) Matches on the NDCD tape could be found for 80% of the items in the shelf stock sample and 69.5% of the items in the tape supplied by the wholesaler.
  • (3) The development of the hydrogelic occlusive device called the P-block is described including developmental steps of the design of the device as well as the experience gained concerning the hydrogel of the device, shelf life, animal and human toxicology, insertion techniques, analgesia, check-up for retention in situ, actual efficacy of the method, mode of action of the device, complication rates, patient acceptance, continuation rates, possible reversibility and future perspectives of the method.
  • (4) Formulation often has a dramatic effect on degradation of proteins during the freeze-drying process as well as impacting on the "shelf-life" stability of the freeze-dried product.
  • (5) The determination of potency or shelf life, impurity limit testing, and study of reaction mechanisms are considered as different aspects of drug stability.
  • (6) Patterns of HA distribution in anterior, posterior and presumptive soft palate were examined in the secondary palatal shelves of CD-1 mouse fetuses that were 30, 24 and 18 h prior to, and at the time of, shelf reorientation.
  • (7) Another pint of Guinness That evening we set out again, this time to O'Donoghue's in Fanore, a blue-painted stone pub set on the thin shelf of land between the sea and the great limestone mountain that is called the Burren.
  • (8) The absence of membrane proteins and chemical stability of SFH and phospholipids promises long shelf-life.
  • (9) So, they start to create these almost fictitious things they can sell, whether it’s a prime shelf [at the height a shopper is most likely to see] or a gondola end [the promotional buckets often found at the top of the aisle].
  • (10) Midline epithelial cells cease DNA synthesis 24-36 h before shelf elevation and contact, become active in the synthesis of cell surface glycoproteins, and subsequently manifest morphological signs of necrosis.
  • (11) It has been suggested that head posture changes, tongue movements and jaw opening reflexes are required to enable palatal shelf elevation to occur in normal cranio-facial development.
  • (12) Allografts are often freeze dried to increase shelf storage time and sterilized with ethylene oxide.
  • (13) The shelf procedure provides a buttress of bone for later reconstructive surgery such as cup or total hip arthroplasty.
  • (14) When tested in another task (recovering food pellets from a horizontal shelf accessible through a narrow slit below the ceiling of the test box) same rats displayed identical (45%) and opposite (15%) preference or were ambidextrous (40%).
  • (15) In one case this was a dense shelf-like mass of echoes extending downward from the basal portion of the interventricular septum toward the mid-portion of the anterior mitral leaflet with corresponding systolic anterior motion of the mitral leaflet.
  • (16) Eight brands of composite resin, including paste-paste, powder-liquid and light-activated systems, as well as three glass ionomer cements were evaluated over a period of twelve months with respect to shelf-life and suitability for use in a tropical environment.
  • (17) They know that you're just going to buy everything from Amazon now, so they've all cut their losses and stacked every shelf with a trillion different 50 Shades Of Grey knock-offs called things like Disciplined With Buttplugs and 20 Carat Strumpet.
  • (18) The shelf life of the solid phase presensitized with monoclonal antibodies was 4 mth at -15 degrees C. DEN prototype viruses were still identified after storage at -15 degrees C for 1 yr or at room temperature for 1 mth.
  • (19) There are now standard off-the-shelf products that provide the kind of digital production tools that simply didn't exist five years ago.
  • (20) It is concluded that the shelf life of iced whole cod can be predicted using this model but not that of vacuum-packed fillets because of the greater variability of bacterial activity in packaged fish.

Shield


Definition:

  • (n.) A broad piece of defensive armor, carried on the arm, -- formerly in general use in war, for the protection of the body. See Buckler.
  • (n.) Anything which protects or defends; defense; shelter; protection.
  • (n.) Figuratively, one who protects or defends.
  • (n.) In lichens, a Hardened cup or disk surrounded by a rim and containing the fructification, or asci.
  • (n.) The escutcheon or field on which are placed the bearings in coats of arms. Cf. Lozenge. See Illust. of Escutcheon.
  • (n.) A framework used to protect workmen in making an adit under ground, and capable of being pushed along as excavation progresses.
  • (n.) A spot resembling, or having the form of, a shield.
  • (n.) A coin, the old French crown, or ecu, having on one side the figure of a shield.
  • (n.) To cover with, or as with, a shield; to cover from danger; to defend; to protect from assault or injury.
  • (n.) To ward off; to keep off or out.
  • (n.) To avert, as a misfortune; hence, as a supplicatory exclamation, forbid!

Example Sentences:

  • (1) 11 patients with a postoperative classification of stage D had additional external beam radiation to the pelvic and paraaortic lymph nodes with shielding of the implanted prostatic region.
  • (2) An effective gonadal shield should reduce the gonadal dose to a level low enough to preserve spermatogenesis in most patients.
  • (3) Scott was born in North Shields, Tyne and Wear, the youngest of the three sons of Colonel Francis Percy Scott, who served in the Royal Engineers, and his wife, Elizabeth.
  • (4) Fred had to be substituted to shield him from the crowd’s disdain.
  • (5) Was the Dalkon Shield so harmful in the nulliparous woman?
  • (6) Physicians need to prescribe the lowest possible dose of hormones in these women and counsel them to shield their face from sunlight.
  • (7) Moulton said his colleagues were preparing to table an offer next week that will shield 50% of the council's staff from a pay cut.
  • (8) Adult males acclimated to an LD 14:10 photoperiod were distributed in five experimental groups: intact controls (NO), sham-pinealectomized (S), sham-pinealectomized with black plastic shielding of the pineal region, pinealectomized (PX), and pinealectomized with the operated region shielded.
  • (9) In order to evaluate long-term as well as short-term effects, blood loss was measured at postinsertion levels of 6, 12, and 18 months in 72 women wearing the Lippes loop, in 73 wearing the Dalkon shield, and in 82 with TCu 300.
  • (10) Using the outer 2 mm of the skin-fold, and shielding the rest of the hand with a lead plate, cutaneous blood flow rate could be monitored separately.
  • (11) Shielded marrow self renewal capacity, a measurement reflecting primitive hematopoietic stem cell function, remained depressed and did not recover with time.
  • (12) We believe the shield makes the patient more comfortable and decreases the likelihood of dislodgement of the adhesive.
  • (13) He lost contact with his father, a lorry driver, for several years, but says that his mother - aided by his uncle - made it her mission to shield him from the crime and disorder around them.
  • (14) The lead shield encloses only the testes, allowing its use with nearly any radiation field that does not include the testes.
  • (15) "Let us arm ourselves with the weapon of knowledge and let us shield ourselves with unity and togetherness," Malala said.
  • (16) I’m not satisfied until I collect everything' … EFL Cup Europa League International Champions Cup Community Shield Which competition was Ian Rush talking about when he said: 'This is why cup finals are so special, because anyone can beat anyone.
  • (17) Nemanja Matic, more normally such a man-mountain of a midfield shield, is diminished and was beaten too easily in the air by James Morrison for the home side’s second.
  • (18) The results indicate that collagen shields can slowly release cyclosporin A and increase the penetration time for the drug.
  • (19) Shields accepted that the Irish appeared more inclined to send up their grim fiscal situation than go out and riot.
  • (20) Some Coalition MPs raised concerns earlier this year that transparency could expose wealthy business owners to security risks, including kidnapping , and the government prepared legislation to shield private Australian companies.