Plant definition

Summers, W.A. (2003), Interim Project Report, Task A.l, Nuclear Hydrogen Plant Definition, NERI Project 02-0160, Centralized Hydrogen Production from Nuclear Power Infrastructure Analysis and Test-case Design Study, WSRC-TR-2003-00484, Savannah River Technology Center, Aiken, SC, USA. 

Governmental-policies effect on costs, 155-157 Gradient, liquid, over bubble-cap trays, 672-673 Graphs in reports, 460-461 Grass-roots plant, definition of, 167 Gross-earnings costs, 194, 196-197, 208-209,... 

Perpetuity, definition of, 230 Personal pronouns in reports, use of, 471 Personnel safely, 47-53, 59-61, 69-75 Phenolic resins, 436, 443 Pilot plants definition olj 3... 

Brian also calls attention to the fact that certain parasitic microorganisms within plant tissues can produce antibiotics that are toxic to their hosts. Among these are lyco-marasmin, fusarinic acid, alternaric acid and patulin. There appears to be considerable doubt as to the connection between these antibiotics and the development of disease symptoms in the host plants. Definite conclusions must await further research. 

Figures 4.2 (a) and (b) show the sequence of the procedure, indicating the points where decisions governing step-by-step action are made. Depending on plant definition, in simple cases a component-oriented analysis may suffice, one which is complete once the determination is made whether requirements specified for components and their design correspond. In many instances the analysis used will be the one which takes into account the materials employed, process parameters, and measuring and control technology. This analysis is indicated when new technical processes are used, when particularly complex interactions are considered, when a higher risk potential exists in the plant, or when economic reasons favor such a course. In a subsequent step the analysis can be in-depth, to the point of the determination of the logic system structure. This will be necessary when particularly detailed results are required or when a transition to a quantitative analysis must be created. Quantitative analysis presumes an adequate data base.

These definitions and codes refer to the main stem of an individual plant Definitions and codes for nodal development refer to all cultivars only nodes where a stipule and leaf stalk develop are recorded descriptions in brackets refer to conventional leaved cultivars only. 

The paper presents the results from systematic comparisons of contrast and resolution obtained with different types of radiation sources on steel thicknesses from 5 to 40 mm. These results have been taken into account with the definitions of the European standard for radiographic inspection of weldments (EN 1435) that is approved since 1997. Conclusions from practical investigations on pipe line sites, in petrochcemical plants and in nuclear power stations will be discussed as well. Furthermore, the presentation will stipulate a variety of advantages obtained from the new source in terras of coUimation and radiation protection. 

The term feedstock in this article refers not only to coal, but also to products and coproducts of coal conversion processes used to meet the raw material needs of the chemical industry. This definition distinguishes between use of coal-derived products for fuels and for chemicals, but this distinction is somewhat arbitrary because the products involved in fuel and chemical appHcations are often identical or related by simple transformations. For example, methanol has been widely promoted and used as a component of motor fuel, but it is also used heavily in the chemical industry. Frequendy, some or all of the chemical products of a coal conversion process are not isolated but used as process fuel. This practice is common in the many coke plants that are now burning coal tar and naphtha in the ovens. 

The American Spice Trade Association (ASTA) (4) accepts spice as any dried plant product used primarily for seasoning purposes. This broad definition was designed so that items labeled only as spice could give adequate protection to proprietary formulas for spice mixtures. However, ASTA recommends that the dehydrated vegetables and the color spices be listed separately by name on all labels. ASTA also has recommended that the capsicums, no matter the species, be delisted as spices and labeled separately. 

Derived plant and animal products make better use or upgrade the nutritional quaHty of already existing materials or products. Synthetic and manufactured products arose from knowledge of the functional properties of food ingredients and of human and animal nutrition that involved more precise definition of nutrient requirements for growth, reproduction, lactation, and body maintenance in both humans and domestic Hvestock. Pood products have been developed to meet human needs under abnormal environments, eg, military rations for arctic, tropical, or desert environments, and special products for astronauts ia space flights. 

Hemicellulose [9034-32-6] is the least utilized component of the biomass triad comprising cellulose (qv), lignin (qv), and hemiceUulose. The term was origiaated by Schulze (1) and is used here to distinguish the nonceUulosic polysaccharides of plant cell walls from those that are not part of the wall stmcture. Confusion arises because other hemicellulose definitions based on solvent extraction are often used in the Hterature (2—4). The term polyose is used in Europe to describe these nonceUulosic polysaccharides from wood, whereas hemicellulose is used to describe the alkaline extracts from commercial pulps (4). The quantity of hemicellulose in different sources varies considerably as shown in Table 1. 

Sediment. The sediment test consists of filtering a definite quantity of milk through a white cotton sediment test disk and observing the character and amount of residue. Efficient use of single-service strainers on dairy farms has reduced the use of sediment tests on milk as deflvered to receiving plants. Although the presence of sediment in milk indicates unsanitary production or handling, its absence does not prove that sanitary conditions always existed. 

Exceptions to the simple definition of an essential oil are, for example, gadic oil, onion oil, mustard oil, or sweet birch oils, each of which requires enzymatic release of the volatile components before steam distillation. In addition, the physical process of expression, appHed mostly to citms fmits such as orange, lemon, and lime, yields oils that contain from 2—15% nonvolatile material. Some flowers or resinoids obtained by solvent extraction often contain only a small portion of volatile oil, but nevertheless are called essential oils. Several oils are dry-distiUed and also contain a limited amount of volatiles nonetheless they also are labeled essential oils, eg, labdanum oil and balsam oil Pern. The yield of essential oils from plants varies widely. Eor example, nutmegs yield 10—12 wt % of oil, whereas onions yield less than 0.1% after enzymatic development. 

The way a pilot plant is designed affects its cost, operabiUty, and effectiveness. AH operating ranges may not yet be fully defined at the initial design stage, but a reahstic preliminary range is required before the design is commenced, as is a clear definition of the pilot plant s purpose. 

Each plant or laboratory should adopt definite rules and procedures for electrical iastahations and work. All iastahations should be ia accordance with the National Electrical Code (NEC) for the type of ha2ard, eg. Class I flammable gas or vapor Class II organic, metallic, or conductive dusts and Class III combustible fibers and the degree of process containment, eg. Division 1 open and Division 2 closed (67). Regardless of the flammabiUty of the materials ia the iastaHed operations, changes ia procedure involving use of such materials often occur, sometimes without concurrent alteration of the electrical iastaHation. 

Standard Chemical Pump. In 1961, the American National Standards Institute (ANSI) iatroduced a chemical pump standard (29), known as ANSI B73.1, that defined common pump envelope dimensions, connections for the auxiUary piping and gauges, seal chamber dimensions, parts mnout limits, and baseplate dimensions. This definition was to ensure the user of the availabiUty of iaterchangeable pumps produced by different manufacturers, as well as to provide plant designers with standard equipment. A typical ANSI chemical pump, known as of the mid-1990s as ASME B73.1M-1991, is shown ia Figure 6. 

In 1994, there were approximately six to seven dozen companies producing shicon in about 30 different Western countries, together employing several hundred furnaces. Nameplate Western world ferrosihcon capacity was estimated at 1,830,000 t of contained shicon. The effective capacity in 1994 was estimated at 1,450,000 t of contained shicon. There has been a definite shift in ferrosihcon capacity and trends for new plants and expansions are outside of the traditional supply areas. Since 1992, new capacity has been added in South Africa, Venezuela, Iran, and Bhutan. Additional plants near completion in Iran and Saudi Arabia are scheduled to start in 1996. The Western world ferrosihcon supply is expected to increase by about 150,000 t/yr of contained shicon by the year 2000 (27). 

A catalyst is a substance that iacreases the rate of approach to equiUbrium of a chemical reaction without being substantially consumed itself. A catalyst changes the rate but not the equiUbrium of the reaction. This definition is almost the same as that given by Ostwald ia 1895. The term catalysis was coiaed ia ca 1835 by Ber2eHus, who recognized that many seemingly disparate phenomena could be described by a single concept. For example, ferments added ia small amounts were known to make possible the conversion of plant materials iato alcohol and there were numerous examples of both decomposition and synthesis reactions that were apparendy caused by addition of various Hquids or by contact with various soHds. 

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