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Moisture temperature

Atmospheric corrosion results from a metal s ambient-temperature reaction, with the earth s atmosphere as the corrosive environment. Atmospheric corrosion is electrochemical in nature, but differs from corrosion in aqueous solutions in that the electrochemical reactions occur under very thin layers of electrolyte on the metal surface. This influences the amount of oxygen present on the metal surface, since diffusion of oxygen from the atmosphere/electrolyte solution interface to the solution/metal interface is rapid. Atmospheric corrosion rates of metals are strongly influenced by moisture, temperature and presence of contaminants (e.g., NaCl, SO2,. ..). Hence, significantly different resistances to atmospheric corrosion are observed depending on the geographical location, whether mral, urban or marine. [Pg.2731]

The properties of ati insulating material are greatly affected by moisture, temperature, repeat overvoltages, and chemical vapour. Care must be taken to avoid these harmful effects to achieve prolonged life of the machine. [Pg.224]

The control and subproducts for the instrumentation are governed by the general technical requirements for the other subproducts in the system. In addition, to fulfill all the general technical requirements, the encapsulation and protection of the environments in which the subproducts are used have to be considered, including danger of explosion, pollution, moisture, temperature, vibration, influence on heating and cooling, etc. See (Table 9.7). [Pg.774]

The fact that property differences between desiccated and soaked samples exist reinforce the concept that physical modifications are introduced into the polymer network by the moisture-temperature ageing. While the exact nature of this change... [Pg.196]

Taylor-Lovell S, GK Sims, LM Wax (2002) Effects of moisture, temperature, and biological activity on the degradation of isoxaflutole in soil. J Agric Food Chem 50 5626-5633. [Pg.47]

Allelopathy arises because growth stimulating, or inhibiting plant and microbial produced biochemicals which are released into the environment. The stress conditions such as moisture, temperature, fertilizer, soil, pests,... [Pg.6]

An almost infinite variety of chemical reactions is possible among soil, additives, and organic contaminate. However, at the moisture, temperature, and pressure conditions present at most sites, only a few reactions are responsible for most stabilization processes. Aside from such processes as absorption, volatilization, and biodegradation, chemical reactions include processes such as hydrolysis, oxidation, reduction, compound formation, and fixation on an insoluble substrate. [Pg.297]

Weathering/Aging - the combined effect of cyclic exposure to varying moisture, temperature and sun exposure, or specific cyclic application conditions such as under the hood grease, oil and temperature variations. [Pg.593]

The abiotic stress affecting microbial activity and growth in an interfacial microenvironment include factors such as light, moisture, temperature, pH, soil/sediment grain size, carbon/nitrogen content, and redox potential [40-43, 46,47,49-51,56-58]. [Pg.329]

Extensive work has been carried out in the US regarding the use of soil filters for odour reduction. (6) It was shown that the filter performance depended on filter loading, type of soil, soil moisture, temperature and concentration of odourous components. The US study also concluded that both chemical and biological processes were responsible for the odour reduction. [Pg.20]

These pumps usually require a high level of maintenance but are low in cost. Their performance is affected by moisture, temperature changes, and pressure changes. [Pg.235]

One of the most studied mononuclear systems that usually leads to supramolecular networks and that also exhibits very rich photophysics and photochemistry is the [Au (CN)2] anion. This complex is among the most stable two-coordinate complexes of the transition ions, with a stability constant of 1037 [9], being reasonably stable to air, moisture, temperature and light, which could make it appropriate for practical applications. [Pg.352]

Specific management practices influence triazine runoff and leaching, including fertilizer type, tillage crop residues, and previous crop history, as well as triazine application, formulation, and placement (Baker and Mickelson, 1994). Tillage systems affect various soil properties, such as soil moisture, temperature, pH, organic matter, water flow, and microbial populations, especially at and near the soil surface. These factors can affect transformation, retention, and transport of herbicides in soil. Interactions of and compensations between these processes can influence our prediction of triazine transport in soil. Therefore, triazine movement is usually studied under one management practice at a time. [Pg.367]

Both of these in situ devices use substantially less solution (volumes of solution samples for each kinetic run are usually of the order of a few cm3) than a typical piston-cylinder apparatus. The pill-box cell method has the advantage that the cell can be filled in an appropriate glove box for oxygen-sensitive samples or for nonaqueous solvent-based systems that are sensitive to moisture. Temperature control is exerted by fluid circulating through the metal block. [Pg.280]

During decomposition, the body s proteins are degraded by the actions of enzymes through a process known as proteolysis (Evans 1963 Janssen 1984 Poison et al. 1985 Sabucedo and Furton 2003). Like all stages of the postmortem process, proteolysis is affected by environmental variables including moisture, temperature, and the degree of bacterial activity (Sorimachi, Horada, and Yoshida 1996 Vass et al. 2002). The process does not occur at a uniform rate, and, consequently, proteolysis may take place much earlier in some tissues than others (Xiao and Chen 2005). Neuronal and epithelial cells... [Pg.205]

The extruder is a continuous high-temperature short-time reactor. Ingredients, moisture, temperature, pressure, and shear can interactively produce many Mail lard-type flavor compounds. As the extrudate exits the extruder, many of the volatile reaction products may be lost with steam since the extrudate passes from a zone of relatively high pressure within the extruder to atmospheric pressure. By controlling formulation variables, the extruder can serve as a useful tool to thermally produce volatile and nonvolatile compounds which make significant contributions to overall flavor. [Pg.494]

Fig. 3. The mobility coefficient K describing the movement of an ion swarm in an electric field. The mobility coefficient depends on the cross-section (collision area) ft, the reduced mass /i, and the effective temperature re f of the ion. Collision area ftD will depend on moisture, temperature, drift gas, and molecule. Fig. 3. The mobility coefficient K describing the movement of an ion swarm in an electric field. The mobility coefficient depends on the cross-section (collision area) ft, the reduced mass /i, and the effective temperature re f of the ion. Collision area ftD will depend on moisture, temperature, drift gas, and molecule.
S.M. Janikowski, Moisture-temperature relationships in fertilizer granulation, Chem. Eng. (London), No. 246 (Feb. 1971) CE51-CE55. [Pg.82]


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See also in sourсe #XX -- [ Pg.350 , Pg.363 , Pg.406 ]




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Combined Effects of Stress, Moisture, and Temperature

Data and Time-Temperature-Moisture Shifts

Diffusion moisture, temperature-humidity

Effect of temperature and moisture content

Moisture absorption temperature influence

Moisture absorption temperatures

Moisture temperature dependence

Temperature dependence moisture effects

Temperature differentials, moisture

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