Physical quality

The influence of airflows from ventilating systems must also be considered. Processes using mediums of different physical qualities when mixed will have separation into different layers. Transmission of energy between molecules in flowing mediums takes place in the direction of the velocity. This strengthens the separation into parallel layers. The level of fluid in containers and tanks is due to stratification of horizontal temperature layers, while airflow after batteries, heat-recovery systems, and humidifiers or dehumidifiers will separate into parallel layers. 

Water physical quality Water chemical biological quality Air physical quality Air chemical quality ... 

McGuire, J. E. Transmutation and immutability Newton s doctrine of physical qualities. Ambix 14 (1967) 69-95. 

The technical development of all types of washing machines and their sensor and control systems depends to a large extent on the use of appropriate detergents, their chemical composition and physical qualities. 

Specifications Chemical, Physical, Quality, Environment Sampling, Vapors, Dusts, Noise,... 

At the very start of Capital, volume 1, Marx (1976) defines commodities as having a double existence, as useful objects (use-values) and as exchange-values. The use-value of a commodity is the physical quality it bestows to the user of the commodity. As an example, Marx indicates that the commodity could have use-value directly as a means of subsistence, i.e. an object of consumption, or indirectly as a means of production (ibid. 125). Indeed, it is these two different use-values that are the basis for... 

Composite represents one of the most-interesting materials for the preparation of working electrodes to be applied in electrochemical analysis. A composite results from the combination or integration of two or more dissimilar materials. Each individual component maintains its original characteristics while giving the composite distinctive chemical, mechanical, and physical qualities. These qualities are different from those shown by the individual elements of the composite [28]. 

Tollner, E.W. 1993. X-ray technology for detecting physical quality attributes in agricultural produce. 

In the Alchemical Theory, says Albert Poisson, the four Elements, not any more than the three Principles, represent particular substances they are simply states of matter, simple modalities. Water is synonymous with the liquid state, Earth with the solid Air with the gaseous and Fire with that of a very subtle gaseous state, such as a gas expanded by the action of heat.. . Moreover, Elements represent, by extension, physical qualities such as heat, (Fire) dryness and solidity, (Earth) moisture and fluidity, (Water) cold and subtility, (Air) Zosimus gives to their ensemble the name of Tetrasomy. 

In contrast to a dimension, a physical quantity represents a quantitative description of a physical quality ... 

Based on the physical and biochemical parameters and molecular techniques, traded (exported) cardamoms from India, Sri Lanka and Guatemala had been characterized (Thomas et al., 2006). Indian cardamom was found to be superior for most of the physical quality parameters and for the biochemical traits. The GC profile of the oil of Indian cardamom also indicates a high quantity of a-terpinyl acetate and 1,8-cineole, which imparts aroma and flavour to the cardamom, thus reinforcing the legendary belief of the high intrinsic quality of the Indian cardamom. The GC-MS pattern of the volatile components in the cardamom... 

Very good physical quality Minimization of step-shaped surface and of... 

It is intuitively obvious, although not yet explained, that the nearer the surface structure lies to the bulk resonance, the more severe the above empirical conditions become, especially those on the physical quality of the crystal. The presence of structure III is the sign of a high-quality crystal, while the presence of a broad structure located between structures II and I (which... 

Analysis of sample quality — The customer usually wants to know physical qualities such as purity and concentration when determining the IC50 of a compound. This request is normally made when IC50 compounds are requested. A separate set of plates should be made for the analytical testing discussed later in this chapter. 

Physical quality relates to physical condition of a sample. The main aspects of physical quality are the presence of a compound and the purity of the sample. If the sample contains substances other than the desired compound, they can cause the compound to fail to produce the activity it would produce if pure. Conversely, the inclusion of other substances may enable a compound to show activity and lead to questions about whether the activity arose from the compound or one or more of the other substances present. Another aspect of physical quality is the concentration of the compound in solution form. An incorrect sample concentration yields misleading results and may lead to incorrect decisions. The physical quality of a sample may change over time thus it is important for compound management to assess physical quality of a sample during its life cycle. This is achieved by three types of assessments ... 

Initial assessment — The physical quality of a sample should be checked when it is first submitted for inventory. This ensures that only high quality samples enter the library. 

Periodic assessment — The intent is to determine how the physical quality of the entire library changes over time. The results can be used to guide storage and processing practices and also determine the life expectancy of the library. Generally, this assessment involves the analysis of a small set of samples that represent the library rather than analyzing every sample. 

The physical quality of samples is assessed via analytical methods. Liquid chromatography with mass spectrometry (LC-MS) is the most common instrumentation used to determine sample presence and purity (Kerns et al., 2005). Chemiluminescent nitrogen detection (CLND), charged aerosol detection (CAD) and other techniques have also been used to determine concentration (Popa-Burke et al., 2004 Gamache et al., 2003). 

Physical quality is an important determinant used by a farmer-consumer in selecting a par-... 

The physical quality of a fertilizer can be evaluated by many different methods that can vary from simple observation to sophisticated techniques. Producers have adopted and/or developed methods to evaluate their particular products. International, national, and regional organizations have adopted, developed, and/or published procedures intended for general application to a variety of fertilizer products and raw materials.3,56,57... 

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