(n.) A genus (Lemna) of small plants, seen floating in great quantity on the surface of stagnant pools fresh water, and supposed to furnish food for ducks; -- called also duckmeat.
Example Sentences:
(1) Duckweed commonly refers to a group of floating, flowering plants of the family Lemnaceae.
(2) Evidence for the sequence of duckweed (Lemna minor) chloroplast 5S rRNA was derived from the analysis of partial and complete enzymic digests of the 32P-labelled molecule.
(3) Growth inhibition of duckweed could be achieved at approx 20 ppb terbutryne in steady state.
(4) The period of the circadian rhythm of uptake of K+ by Lemna gibba strain G3 (duckweed), cultured in a flow medium, was shortened by continuous application of 0.5 mM tetraethylammonium chloride (TEA), which functions as a K+ channel blocker in both animal and plant cells.
(5) Spirodela (Duckweed) was thus used to ascertain the response of the nucleocytoplasmic (nc) and plastid ribosomal RNA metabolisms to partial and total carbon deprivation.
(6) The possible sequence of the chloroplast 5S rRNA from three other flowering plants was deduced by complete digestion with T1 ribonuclease and comparison of the sequences of the oligonucleotide products with homologous sequences in the duckweed 5S rRNA.
(7) Many duckweed species have been studied, primarily of the Lemna and Spirodela genera.
(8) Radioactivity from d-[l-(14)C]glucosamine is incorporated into ethanol-insoluble compounds of high molecular weight in a number of plant tissues, including roots of corn (Zea mays), callus cells of sycamore (Acer pseudoplatanus), axenic cultures of duckweed (Lemna minor) and germinating seedlings of corn, broad bean (Vicia faba) and barley (Hordeum vulgare).
(9) Duckweed and algae represent different levels of complexity in the plant kingdom.
(10) Values for the half-life of Lemna minor (duckweed) protein determined by the new method are compared with values obtained by other methods.
(11) Herbicidal effectiveness of terbutryne-EVA formulation has been investigated in a laboratory-scale simulated flow system device with duckweed plants (Lemna minor) as test organism.
(12) Thus the specific activity of the duckweed enzyme is more than two orders of magnitude higher than that of the enzyme from rat testes.
(13) In the short, single-screen film Lock Again, there is a marvellous sequence in which two young men in sailor's uniforms - both of whom look as if they have been in a fight - ferry an imperious girl across a pond thick with duckweed in a rowing boat.
(14) A new method is described for measuring environmental stress through the use of the duckweed (Lemna minor) rhizosphere.
(15) Differences in duckweed test methodology occur with regard to test types, test vessels, control tests, nutrient media, end points, and applications.
(16) Other studies, however, indicate that duckweed plants are as sensitive to toxicity as other aquatic species.
(17) Duckweed (Spirodela oligorrhiza, Kurz) is a sensitive indicator of 1,1'-alkyl-4,4'-bipyridylium salt (viologen) herbicidal potency.
(18) Duckweed plants are fast growing and widely distributed.
(19) Orellanine, a toxic principle of Cortinarius orellanus Fr., efficiently inhibited the photosynthetic activity of duckweed, Lemna minor L., at a concentration of 0.4 mM.
(20) The present paper deals with the separation of cells from soluble compounds of blood by means of exclusion chromatography using a recently described vesicular packing material made from the cell wall framework of the small duckweed Wolffia arrhiza.
Floating
Definition:
(p. pr. & vb. n.) of Float
(a.) Buoyed upon or in a fluid; a, the floating timbers of a wreck; floating motes in the air.
(a.) Free or lose from the usual attachment; as, the floating ribs in man and some other animals.
(a.) Not funded; not fixed, invested, or determined; as, floating capital; a floating debt.
(n.) Floating threads. See Floating threads, above.
(n.) The second coat of three-coat plastering.
Example Sentences:
(1) A few free-floating cells could be observed in the lumen of this intermediate portion, most of which were macrophages.
(2) Just a few months ago, a director-level position job for Sears was floated by me from the department store chain's headquarters in Chicago.
(3) Hamish Kale Floating sauna near Uppsala, Sweden Just outside Uppsala, around one hour north of Stockholm, lies the picturesque outdoor adventure area of Fjällnora.
(4) Type II cells cultured on floating feeder layers in medium containing 1% CS-rat serum and 10(-5) M hydrocortisone plus 0.5 mM dibutyryl cyclic AMP exhibited significantly increased incorporation of [14C]acetate into total lipids (238% of control).
(5) Nonetheless some strange theories have been floated.
(6) Lymphocytes with low floating density lyse NK-sensitive target cells and leukemic B-lymphocytes, increase the lytic activity with respect to blasts of K-562 line under the effect of alpha-interferon.
(7) So Huck Finn floats down the great river that flows through the heart of America, and on this adventure he is accompanied by the magnificent figure of Jim, a runaway slave, who is also making his bid for freedom.
(8) An Artist of the Floating World won the Whitbread Book of the Year award and was nominated for the Booker prize for fiction; The Remains of the Day won the Booker; and When We Were Orphans, perceived by many reviewers as a disappointment, was nominated for both the Booker and the Whitbread.
(9) The government will formally begin the sale of Royal Mail on Thursday by announcing its intention to float the 497-year-old postal service on the London Stock Exchange.
(10) See kajakkompaniet.se and langholmenkajak.se for information Swimming, Liljeholmsbadet Stockholmers swim all year round at the floating bath on lake Mälaren in Hornstull on Södermalm.
(11) Two hundred six floating fusions were performed, of which 184 were available for follow-up.
(12) You float a tiny distance above, suspended by the repulsion between atoms.
(13) My Paul Nuttalls routine has floated back up the U-bend | Stewart Lee Read more Nuttall told Marr that “nothing should be a sacred cow in British politics.
(14) In 2011, a young sperm whale was found floating dead off the Greek island of Mykonos.
(15) Chinese drugs constitute a unique medicinal system that features the following three subsystems: subsystem of medicinal substances consisting of traditional theories such as "four properties and five tastes of drugs" and "the principal, adjuvant, auxiliary and conduct ingredients in a prescription' , etc; subsystem of pharmacological actions comprising the theory of "ascending, descending, floating and sinking", etc; Subsystem of human body's functions incorporating the theory of "drugs to act on the channels".
(16) In heavily mineralized bone matrix, the periodic pattern of collagen fibrils was retained, and the electron density of mineralized matrix in freeze-substituted and unstained sections which had been floated on ethylene glycol was greater than that encountered in sections processed in aqueous reagents.
(17) SCLC variant lines could further be divided into (a) biochemical variant lines having variant biochemical profile but retaining typical SCLC morphology and growth characteristics; and (b) morphological variant (SCLC-MV) lines having variant biochemical profile, altered morphology (features of large cell undifferentiated carcinoma) and altered growth characteristics (growth as loosely attached floating aggregates, relatively short doubling times and cloning efficiencies).
(18) The outcome is a belief that the Earth is being slowly strangled by a gaudy coat of impermeable plastic waste that collects in great floating islands in the world's oceans; clogs up canals and rivers; and is swallowed by animals, birds and sea creatures.
(19) Comparative lipid-binding studies with dimyristoyl phosphatidylcholine gave complexes for native and synthetic apoprotein which floated at the same density after ultracentrifugation in KBr gradients and had virtually the same lipid:protein ratios.
(20) This technique was used to bring misdirected urinations in a severely retarded male under rapid stimulus control of a floating target in the commode.