The Hertz Corporation

About: The Hertz Corporation is a based out in . It is known for research contribution in the topics: Population & Soil water. The organization has 9562 authors who have published 11044 publications receiving 447929 citations. The organization is also known as: Hertz Rental Car & Hertz Rent-a-Car.

Cellular and molecular actions of lamotrigine: Possible mechanisms of efficacy in bipolar disorder.

Abstract: Several clinical studies have investigated the use of the anticonvulsant lamotrigine (LTG) as a treatment for bipolar affective disorder. Evidence suggests that this drug may have a broad spectrum of

Cut growth and fatigue of rubbers. II. Experiments on a noncrystallizing rubber

Abstract: Tensile fatigue failure of a gum vulcanizate of noncrystallizing SBR can be accounted for by the growth of small flaws initially present in the rubber. Fatigue of crystallizing natural rubber was shown in Part I to be attributable to the same cause. Cut growth results are interpreted in terms of the tearing energy theory of Rivlin and Thomas. SBR exhibits cut growth under both static and dynamic conditions; in each case the rate is approximately proportional to the fourth power of the tearing energy. Variation of the dynamic cut growth rate with frequency can be explained by the summation of a timedependent static component of growth and a cyclic component not dissimilar to that occurring in natural rubber. Fatigue failure, under both static and dynamic conditions, is predicted from the cut growth results. These predictions are found to account quantitatively for experimentally observed fatigue lives when a suitable value is assumed for the initial flaw size. Fatigue lives at different temperatures correlate well with cut growth results obtained by Greensmith and Thomas over the same temperature range. The results are compared to those obtained previously for natural rubber, and possible reasons for the differences in fatigue behavior of crystallizing and noncrystallizing rubbers are discussed.

Effects of high plant populations on the growth and yield of winter oilseed rape (Brassica napus)

Abstract: The effects of plant density on the growth and yield of winter oilseed rape (Brassica napus) were examined in a series of five multifactorial experiments at Rothamsted Experimental Station between 1984 and 1989. Plant densities, manipulated by changing the seed rate and row spacing, or because of overwinter losses, ranged from 13.5 to 372 plants/m 2 . Normalized yields for the multifactorial plots increased with densities up to 50-60 plants/m 2 . In very high density plots in 1987/88, yield decreased as density increased > 150 plants/m 2 . Plants grown at high density had fewer pod-bearing branches per plant but produced more branches/m 2 . Branch dry matter (DM) per plant was decreased by 42 %, the number of fertile pods per plant and pod DM/plant by 37%. There was no effect of density on the number or DM of pods/m 2 . Over 74 % of the fertile pods were carried on the terminal and uppermost branches of plants grown at high density in 1987/88 compared with only 34% in plants grown at low density in 1988/89. Seed DM/plant decreased with increase in density but seed size (1000-seed weight) increased. There was no effect of density on seed glucosinolate or oil contents.

Quantification Rhetoric—cancer on Television:

Abstract: This paper is concerned with quantification rhetoric: the manner in which numerical and non-numerical quantity formulations are deployed when proposing and undermining argumentative cases. The analysis is focused on a set of materials derived from the making and response to a current affairs television programme about the (putative) lack of success in charity-supported cancer research in providing effective treatments. The study demonstrates: (a) how a range of calculation, fractionation, aggregation and presentational practices can be selectively drawn on to form the scaffolding of contrasting versions; (b) the systematic translation between numerical (e.g. `1 percent') and non-numerical (e.g. `small') formulations to obtain specific argumentative effects; and (c) the role of basic, but often inexplicit, definitional decisions to both constitute phenomena in a manner that makes them countable, and also to select arenas for the effective advancing of quantification argument. Overall, the study illustrates the efficacy of recent discourse theory and analysis for understanding the rhetorical orientation of quantitative versions of the world.

Determination of dissolved oxygen by the winkler method and the solubility of oxygen in pure water and sea water

Abstract: Values for the solubility of oxygen in water obtained by a modification of the Winkler method are shown to be low because of losses of iodine vapour. Iodine vapour is also lost in two of the standard modifications of the Winkler method in common use, the amount lost depending on the technique of the analyst. The volatilisation of iodine can be avoided by the use of the alkaline iodide reagent of Pomeroy & Kirschman; a procedure employing this reagent is described. Interference by pitrites and ferric iron may be eliminated by sodium azide and phosphoric acid respectively. The accuracy of the Winkler method, modified to prevent the loss of iodine vapour, has been confirmed using gaseous oxygen as a standard. Using the procedure recommended, determinations have been made of the solubility of atmospheric oxygen in distilled water between 0·4° and 37°, and in sea water between 2° and 27°. The results for distilled water are in excellent agreement with those of Klots & Benson between 2° and 27°; the new values for sea water agree fairly well with those of Fox. In measurements of the rate of solution of oxygen, the approach to equilibrium using these values was consistent with the law of Adeney & Becker.