(n.) An amphibious animal of the genus Rana and related genera, of many species. Frogs swim rapidly, and take long leaps on land. Many of the species utter loud notes in the springtime.
(n.) The triangular prominence of the hoof, in the middle of the sole of the foot of the horse, and other animals; the fourchette.
(n.) A supporting plate having raised ribs that form continuations of the rails, to guide the wheels where one track branches from another or crosses it.
(n.) An oblong cloak button, covered with netted thread, and fastening into a loop instead of a button hole.
(n.) The loop of the scabbard of a bayonet or sword.
(v. t.) To ornament or fasten (a coat, etc.) with trogs. See Frog, n., 4.
Example Sentences:
(1) A spindle cell sarcoma appeared 20 months after implantation of a pellet of 3-methylcholanthrene in the denervated foreleg of an adult frog, Rana pipiens.
(2) We have previously shown that serotonin is present in secretory granules of frog adrenochromaffin cells; concurrently, we have demonstrated that serotonin is a potent stimulator of corticosterone and aldosterone secretion by adrenocortical cells.
(3) The actions of the polyvalent cationic dye Ruthenium Red and the enzyme neuraminidase were studied at the frog neuromuscular junction.
(4) The purpose of our study was to determine the effect of HVPC on edema formation in frogs.
(5) The content of unsaturated fatty acids in walleye pollock PRM is 1.4 times greater than in frog PRM.
(6) The concentration dependences of response of frog tongue to D-fructose, D-glucose, and sucrose were almost the same, D-galactose, however, elicited a much larger response in comparison with the other sugars in the whole range of concentrations examined.
(7) Interpreted in term of compartmental analysis, these observations suggest that a) the frog skin epithelium contains 2 separated but communicating compartments having different degrees of accessibility from outside; b) only that compartment filling at a fast rate (0.5 min) is involved in the transepithelial Na transport; c) the other one, filling at a rate of 4 to 7 min, is resplenished only under conditions where the basal pump system has a reduced activity.
(8) The mechanisms underlying the three types of Cd effects on the frog skin were discussed in relation to the Na, K-ATPase activity.
(9) The addition of the Ca2+ ionophore A23187 (1 microM) to the inside solution of the frog skin resulted in an approx.
(10) At a concentration of 10 microM, tetraamine 4 did not affect histamine and 5-hydroxytryptamine receptors of guinea pig ileum or alpha-adrenoreceptors of guinea pig atria whereas it inhibited postsynaptic alpha-adrenoreceptors of rat vas deferens with a -log K value of 5.23 and nicotinic receptors of frog rectus abdominis with an IC50 value of 0.23 microM.
(11) The authors studied the effects of varying Na+ and Ca++ concentrations and of replacing H2O with D2O in Ringer's solution upon the actions of general and local anesthetics on isolated frog sciatic nerves.
(12) Antibiotics, X-537A and A23187, were added in micromolar concentrations to selected bathing solutions of skinned frog muscle fibers, and they were shown to affect the production of tension in the skinned fibers.
(13) The influence of stretch and radial compression on the width of mechanically skinned fibers from the semitendinosus muscle of the frog (R. pipiens) was examined in relaxing solutions with high-power light microscopy.
(14) The aim of this study was to determine the frequency of occurrence of the phenomenon in skin and muscle capillaries in both young and mature frogs and to examine the ultrastructure of endothelial cells found in these capillaries.
(15) At I = 0.2 M, pH 7, and 15 degrees C, the inhibition constants for rabbit myofibrils are 0.17, 3, and 5 mM, respectively; the values for frog myofibrils at 0 degrees C are very similar, being 0.22, 1.5, and 2.5 mM.
(16) A detailed comparison of the interaction of beta-adrenergic receptors with adenylate cyclase stimulation and modification of this interaction by guanine nucleotides has been made in two model systems, the frog and turkey erythrocyte.
(17) Of these 34 antibodies, 33 recognized the rat receptor and 1 was shown to precipitate the receptors from mice, chickens, and frogs with high affinity.
(18) Such a heterogeneity in DNA content in the diploid part of HPR cell population could apparently suggest some differences in the nuclear chromatin arrangement to be always higher in spring before the frog spawning, and it seems to be characteristic of this type of cells.
(19) Isolated frog retinas kept receptor side-upward in a moist chamber without perfusion showed the well-known slow PIII generated by the potassium decrease around receptors.
(20) We now report that two synthetic diacylglycerols (DAG) replicate the stimulatory and inhibitory effects of TPA on frog skin.
Knot
Definition:
(n.) A figure the lines of which are interlaced or intricately interwoven, as in embroidery, gardening, etc.
(n.) A fastening together of the pars or ends of one or more threads, cords, ropes, etc., by any one of various ways of tying or entangling.
(n.) A lump or loop formed in a thread, cord, rope. etc., as at the end, by tying or interweaving it upon itself.
(n.) An ornamental tie, as of a ribbon.
(n.) A bond of union; a connection; a tie.
(n.) Something not easily solved; an intricacy; a difficulty; a perplexity; a problem.
(n.) A cluster of persons or things; a collection; a group; a hand; a clique; as, a knot of politicians.
(n.) A portion of a branch of a tree that forms a mass of woody fiber running at an angle with the grain of the main stock and making a hard place in the timber. A loose knot is generally the remains of a dead branch of a tree covered by later woody growth.
(n.) A knob, lump, swelling, or protuberance.
(n.) A protuberant joint in a plant.
(n.) The point on which the action of a story depends; the gist of a matter.
(n.) See Node.
(n.) A division of the log line, serving to measure the rate of the vessel's motion. Each knot on the line bears the same proportion to a mile that thirty seconds do to an hour. The number of knots which run off from the reel in half a minute, therefore, shows the number of miles the vessel sails in an hour.
(n.) A nautical mile, or 6080.27 feet; as, when a ship goes eight miles an hour, her speed is said to be eight knots.
(n.) A kind of epaulet. See Shoulder knot.
(n.) A sandpiper (Tringa canutus), found in the northern parts of all the continents, in summer. It is grayish or ashy above, with the rump and upper tail coverts white, barred with dusky. The lower parts are pale brown, with the flanks and under tail coverts white. When fat it is prized by epicures. Called also dunne.
(v. t.) To tie in or with, or form into, a knot or knots; to form a knot on, as a rope; to entangle.
(v. t.) To unite closely; to knit together.
(v. t.) To entangle or perplex; to puzzle.
(v. i.) To form knots or joints, as in a cord, a plant, etc.; to become entangled.
(v. i.) To knit knots for fringe or trimming.
(v. i.) To copulate; -- said of toads.
Example Sentences:
(1) Two years ago I met a wonderful man and we now feel it’s time to tie the knot.
(2) The tinsel coiled around a jug of squash and bauble in the strip lighting made a golf-ball size knot of guilt burn in my throat.
(3) It is emphasized that surgeons should be more aware of the relationship of the holding power of surgical knots to not only the knot-typing technique but also the kind of suture material used.
(4) When a supercoiled substrate bearing two FLP target sequences in inverse orientation is treated with FLP, the products are multiply knotted structures that arise as a result of random entrapment of interdomainal supercoils.
(5) In principle, the more turns and throws the stronger the knot.
(6) Also numerous small knots on the small intestine, peritoneum, and omentum, as well as a considerable amount of ascites were observed.
(7) Suture knots are buried in the sclera to minimize the risk of late-onset endophthalmitis.
(8) The catheter with intact triple knots could be withdrawn without an invasive maneuver.
(9) A more detailed analysis of the products from recombination between wild-type sites indicates: (1) that the catenanes or knots produced by recombination are both simple and complex; (2) that the ratio of free products to catenanes is independent of the distance between the two directly repeated loxP sites; and (3) that for DNA substrates with four loxP sites significant recombination between non-adjacent sites occurs to give free circular products.
(10) This article studies the different knots, modalities and sutures.
(11) The mechanical performance of these sutures was judged by the following parameters: knot breakage force, configuration of secure knots, and knot run down force.
(12) This could be of important use in expediting root-knot nematode resistance (based on the Aps 1-linked resistance gene Mi) screening for breeding programs, or F1 testing for seed production purposes.
(13) After this manoeuvre, both the introducer and the small knot could be withdrawn from the jugular vein without further incident.
(14) The former appears characteristic of circularly bent DNA and gives rise to a substantial retardation, the latter of bending across a knot or kink in the DNA chain associated with a relatively minor retardation relative to standards.
(15) The suture appears to be solid, and the knots do not loosen.
(16) Now before you get your knickers in a knot, of course I love my children – and I do a decent job of caring for them.
(17) With respect to handling, knotting, tissue drag, absorption, and postoperative complications, the improved Dexon suture was found to be well suited for use in cataract surgery.
(18) The reduced phacoemulsification incision size in combination with a scleral pocket closed with a continuous single knotted 10-0 monofilament nylon suture under tonometric and keratometric control significantly dampens the changes in corneal astigmatism during the early and late postoperative periods.
(19) Two new triterpenoid saponins, wistariasaponins D [1] amd G [2], and the known saponin dehydrosoyasaponin I [3] were isolated from the knots of Wistaria brachybotrys.
(20) Loose ends in efforts to untangle the Gordian knot of Syria | Letters Read more “What is important is Russia has to not be engaged in any activities against anybody but [Isis],” secretary of state John Kerry said.