(a.) Containing a high percentage of silica; -- opposed to basic.
Example Sentences:
(1) The amino acid sequence deduced from the nucleotide sequence contained both amino- and carboxyl-terminal sequences.
(2) F(420) is photolabile aerobically in neutral and basic solutions, whereas the acid-stable chromophore is not photolabile under these conditions.
(3) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(4) If ascorbic acid was omitted from the culture medium, the extensive new connective tissue matrix was not produced.
(5) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(6) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(7) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(8) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
(9) After 4 to 6 hours of recirculation, accumulation of vasoactive amine, 5-hydroxytryptamine, its major metabolite, 5-hydroxyindole acetic acid, and its precursor amino acid, tryptophan were detected.
(10) Spectrophotometric determination of the sulfhydryl content in the animal tissue before (control) and after using 6,6'-Dithiodinicotinic acid is applied.
(11) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
(12) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(13) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(14) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(15) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
(16) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(17) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
(18) Hepatic lymph flow increased only after ethacrynic acid and mannitol administration.
(19) 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.
(20) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
Heathland
Definition:
Example Sentences:
(1) Enjoy riding through the natural beauty of pine forests and open heathland, before taking the Sand Worm (a tractor-trailer ride) across vast sand dunes to the colliding waves of the North and Baltic seas.
(2) Ten of the 13 species that depend on specific habitats - heathland, coppices, woodland glades, bracken, hedgerows and so on - have fared better on sites where farmers had agreed to tend the landscape with wildlife in mind.
(3) The path runs through a wild and protected area of dunes, woodland and heathlands with views of the islands in the Gulf of Morbihan.
(4) Facebook Twitter Pinterest Coastal heathland around the shack community of Temma on the west coast of Tasmania, which has been reduced to ash after a bushfire.
(5) Specific needs, such as pig-raising or bee-keeping, supported the formation of particular landscapes, e.g., sparsely wooded forests and extensive heathlands.
(6) * According to Wikipedia a chaparral is "a shrubland or heathland plant community found primarily in the US state of California and in the northern portion of the Baja California peninsula, Mexico".
(7) The destruction or conversion of grasslands, heathlands and scrub to grow more crops – often using pesticides – has decimated many bird populations.
(8) Stonechats, warblers and linnets chatter from the heathland.
(9) It involves activities such as restoring heathland, burning brash – cuttings left over from wood management – digging ditches, path widening, coppicing, scrub clearance, fence removal and pond maintenance.
(10) Glover says the commission is not a guardian of our woods, having "for most of its existence ... gone about ripping up ancient forests and heathlands and covering them in industrial coniferous monoculture".
(11) Our rarer blues, the large, chalk hill, Adonis and silver-studded, use very specific habitats; heathland for the latter, southern downland for the first three.
(12) Goonhilly, a sparse heathland at Britain's most southerly point, could have been designed for satellite broadcasts by a benevolent god familiar with the nature of the radio wave.
(13) The rare heathland broad-headed bug was discovered by the trust's biological survey team on Dunkery Beacon in Exmoor, along with the scarce cow-wheat shieldbug.
(14) Chilworth to Guildford, Surrey This eight-mile walk crosses heathland dotted with pretty villages before dropping down to follow the Wey Navigation , where there are many swimming places.
(15) Photograph: Exmoor Tourism Partnership (ETP) The Quantock Hills are a sumptuous mix of woods and heathland, and the birthplace of Romantic poetry.
(16) In a sign of the opposition companies are likely to face from local communities and environmental groups, however, the Countryside Council for Wales warned that the land around the possible mid-Wales source of water for transfer from the Severn to the Thames was home to many protected species including important bog and heathland, and hen harriers, peregrine falcons and merlins.