A laboratory investigation on a scaled model of a landACT: l ti n a scaled o l f ­ fill liner was conducted to provide data regarding the occurrence l i e e and extent of desiccation cracking of prototype liners. The crack t t of desi t e li rs. intensity factor, CIF, was introduced as a descriptor of the extent of t f , , as i tr as f the extent of surficial cracking. CIF is defmed as the rati...

Viable methanogens have been detected in dry, aerobic environments such as dry reservoir sediment, dry rice paddies and aerobic desert soils, which suggests that methanogens have mechanisms for long-term survival in a desiccated state. In this study, we quantified the survival rates of the methanogenic archaeon Methanosarcina barkeri after desiccation under conditions equivalent to the driest e...

1. Protection against desiccation and chemical communication are two fundamental functions of cuticular hydrocarbons (CHCs) in insects. In the parasitoid jewel wasp Nasonia vitripennis (Walker), characterised by a cosmopolitan distribution through largely different environments, CHCs function as universally recognised female sex pheromones. However, CHC uniformity basis for sexual recognition m...

Line-tension-induced scenario of heterogeneous nucleation is studied for a lens-shaped nucleus with a finite contact angle nucleated on a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension on the free energy of a critical nucleus can be separated from the usual volume term. By comparing the free energy of a lens-shaped critical nucleus of a finit...

During tidal cycles, fiddler crabs undergo alternating periods of submersion and desiccation. We compare physiological biochemical adjustments to desiccation challenge in two gelasminids from the Galapagos archipelago: indigenous Leptuca helleri, Minuca galapagensis. examine population distributions habitat characteristics; survival hemolymph osmolality after 6 h at several salinities, or 12 de...

Chang, C. N., and Thompson, C. R. (1964). Microchem. J., 8, 407. Hall, R. J. (1960). Analyst, 85, 560. (1963). Ibid., 88, 76. Johnson, C. A., and Leonard, M. A. (1961). Ibid., 86, 101. Krebs, H. A., and Henseleit, K. (1932). Hoppe-Seylers Z. physiol. Chem., 210, 33. Singer, L., and Armstrong, W. D. (1959). Analyt. Chem., 31, 105. (1965). Anal. Biochem., 10, 495. (1967). Nature (Lond.), 214, 116...

BACKGROUND This study aimed to assess the spatial variation in physicochemical properties within individual mangos, as well as to investigate the influence of initial ripeness level on physicochemical characteristics of fresh-cut mangos. Individual mangos were evaluated at 12 specific flesh positions in the inner and outer sides. Mango cubes of 1.5 cm prepared from three firmness stages were mo...

We study the kinetics of assembly of two plates of varying hydrophobicity, including cases where drying occurs and water strongly solvates the plate surfaces. The potential of mean force and molecular-scale hydrodynamics are computed from molecular dynamics simulations in explicit solvent as a function of particle separation. In agreement with our recent work on nanospheres [J. Phys. Chem. B 20...

Nature has developed an impressive repertoire of metal-based enzymes that perform complex chemical reactions under moderate conditions. Catalysts that produce molecular hydrogen (H2) are particularly promising for renewable energy applications. Unfortunately, natural and chemical H2-catalysts are often irreversibly degraded by molecular oxygen (O2). Here we present a straightforward procedure b...