(n.) The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to hibernation.
(n.) The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration.
Example Sentences:
(1) Contrastingly, the hepatopancreas of aestivated snails when treated with ganglionic extracts of active snails showed increased specific activities of both enzymes.
(2) A wide size range of both species of snail were found to aestivate, but there was differential mortality of young B. rohlfsi soon after the lake re-filled, and the optimally surviving size group of B. globosus was 9 mm.
(3) Upon entering into aestivation, Protopterus aethiopicus develops a respiratory acidosis.
(4) On re-activation of some aestivating snails, betion of ATP and Mg2+ to the isolated gut contents or to extracts from washed gut walls led to the formation of higher-molecular-weight forms of the enzyme, beta-glucosidase A (mol.wt.
(5) Snails in the aestivated group were completely inactive for 8 weeks beginning at age 23 weeks.
(6) The cessation of water intake from the start of aestivation results in hemoconcentration and marked oliguria.
(7) This was not correlated to metabolic rate suggesting that glycolytic rate was reduced in this tissue in the early stages of aestivation, possibly due to a change in fuel use.
(8) The molluscicide would then be released at the unpredictable start of the next wet season and kill any snails which survive the drought by aestivation.
(9) Infective larvae aestivate in the faeces or in the soil of the lucerne pastures in the dry, hot summer months and migrate on to the herbage during the cool, wet autumn.
(10) X-ray microanalyses of ultrathin frozen sections from aestivating and non-aestivating snails have shown gradients of chloride and potassium ions in the apical microvillus region of the regulating mantle collar epithelium.
(11) A cocoon formed from a single cell layer of shed stratum corneum may reduce water loss from the skin of desert-dwelling frogs while these aestivate in soil-filled burrows.
(12) The possible roles of these ions, pH and substrate in the modulation of fructose diphosphatase and gluconeogenic activity in the lungfish are discussed in relation to aestivation and temperature adaptation.
(13) The activity levels of both enzymes decreased in aestivating snails.
(14) Aestivation patterns in Bulinus rohlfsi and B. globosus were studied by digging transects across the floor of their dried habitats and by monitoring changes in snail population structure during the period when the habitats were flooded.
(15) As aestivation continued, the number of breaths per tachypneic period increased gradually to reach a steady level at about the 3rd mo.
(16) The beginning of aestivation in B. rohlfsi did not correlate with any of the physical parameters measured, but it coincided with the dying off of a bloom of unicellular algae.
(17) The importance of stimuli other than desiccation in the aestivation process of bulinids is stressed.
(18) X-ray microanalysis of unfixed thin sections shows that there is a concentration gradient of ions within these cells in aestivating animals which is not present in stimulated snails.
(19) Bulinus rohlfsi, which inhabited a small man-made lake, was found to aestivate towards the bottom of its habitat, aestivation occurring during the last six weeks before the lake dried.
(20) A. nuchalis thus appears to be an opportunistic vernal breeder, limited only by the availability of resources, whereas A. caudicinctus, which apparently displays the greater reproductive effort of the two species, has a typical aestival pattern of breeding which is uniquely attuned to the enormous burst of productivity occurring in this arid region following the substantial and predictable summer cyclonic rains.
Depression
Definition:
(n.) The act of depressing.
(n.) The state of being depressed; a sinking.
(n.) A falling in of the surface; a sinking below its true place; a cavity or hollow; as, roughness consists in little protuberances and depressions.
(n.) Humiliation; abasement, as of pride.
(n.) Dejection; despondency; lowness.
(n.) Diminution, as of trade, etc.; inactivity; dullness.
(n.) The angular distance of a celestial object below the horizon.
(n.) The operation of reducing to a lower degree; -- said of equations.
(n.) A method of operating for cataract; couching. See Couch, v. t., 8.
Example Sentences:
(1) He's Billy no-mates with a Heckler & Koch sniper-rifle, drowning in loneliness, booze and depression.
(2) Thyroid replacement led to resolution of both apnea and depression.
(3) During and after the infusion of 5HTP, none of the patients showed an increase in anxiety or depressive symptoms, despite the presence of severe side effects.
(4) Sixteen patients in whom schizophrenia was initially diagnosed and who were treated with fluphenazine enanthate or decanoate developed severe depression for a short period after the injection.
(5) Further, at the end of treatment fewer patients had depressive symptoms and the total daily number of hours of wellbeing and normal movement increased.
(6) The active agents modestly improved treadmill exercise duration time until 1 mm ST segment depression (3%), and only propranolol and diltiazem had significant effects.
(7) The ED50 and ED95 of mivacurium in each group were estimated from linear regression plots of log dose vs probit of maximum percentage depression of neuromuscular function.
(8) The data are compared with the results from 79 patients with a bipolar depression, 192 with a neurotic depression and 89 with a depressive reaction.
(9) A similar depressed receptor function was observed for C3b, fibronectin, and some lectins.
(10) From these results, it was suggested that the inhibitory effect of Cd on in vitro calcification of MC3T3-E1 cells may be due to both a depression of cell-mediated calcification and a decrease in physiochemical mineral deposition.
(11) Both treatments depressed nocturnal pineal melatonin content in rats and hamsters.
(12) Infusion of sodium lactate associated with isoproterenol could be used to combat the depressent effects of betablockers in patients with cardiac disorders.
(13) We studied the effects of the localisation and size of ischemic brain infarcts and the influence of potential covariates (gender, age, time since infarction, physical handicap, cognitive impairment, aphasia, cortical atrophy and ventricular size) on 'post-stroke depression'.
(14) The literature on depression and immunity is reviewed and the clinical implications of our findings are discussed.
(15) Subthreshold concentrations of the drug to induce complete blockade (5 x 10(-8)M) allowed to observe a greater depression of bioelectric cell characteristics in primary than in transitional fibres.
(16) However, a recrudescence in both psychotic and depressive symptoms developed as plasma desipramine levels rose 4 times higher than anticipated from the oral doses prescribed.
(17) These results indicate that the hormonal status should be taken into consideration in studies dealing with platelet MAO activity in depressed women.
(18) Three coyotes were operantly conditioned to depress one of two foot treadles, left or right, depending on the condition of the stimulus light.
(19) Although esmolol may be used as a primary hypotensive agent, the potential for marked myocardial depression must be recognized.
(20) Subjects who reported incidents of childhood sexual exploitation had lower levels of self-esteem and higher levels of depression than the comparison group.