Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Space table

A saturated aqueous solution in contact with an excess of a definite solid phase at a given temperature will maintain constant humidity in an enclosed space. Table 11.4 gives a number of salts suitable for this purpose. The aqueous tension (vapor pressure, in millimeters of Hg) of a solution at a given temperature is found by multiplying the decimal fraction of the humidity by the aqueous tension at 100 percent humidity for the specific temperature. For example, the aqueous tension of a saturated solution of NaCl at 20°C is 0.757 X 17.54 = 13.28 mmHg and at 80°C it is 0.764 X 355.1 = 271.3 mmHg. [Pg.1083]

There has much analysis in the petroleum industry as what is the prudent spacing table to use in the layout of an onshore facility. Attempts have even been made to compare the spacing tables used by individuals companies. This would provide a consolidated table the entire industry could apply. Although such an idea is admirable, there are several obstacles in achieving such a goal. [Pg.96]

The ideal solution is to perform a risk analysis for each item in a facility to determine the probable maximum fire and explosive range the location may produce. The calculations and expense to accomplish such a task today does not appear to justify a unilateral application to every piece of equipment at a facility. Consequentially the use of a spacing table for a facility design provides for an economical and expedient solution. This is especially important when several options on the layout of the facility are available. However in some instances the use of risk analysis may demonstrate less spacing is necessary that what a spacing chart requires. [Pg.96]

The first task in applying a spacing table to a facility is to ensure it corresponds to the philosophy of protection adopted by the company. Where limited space is available to provide the required spacing, an examination of the equivalent fire and explosive barriers or active fire suppression system should be confirmed. This analysis should be accepted by the company as part of the design risk analysis. [Pg.96]

The distribution of slurry and hence nutrients in the soil, both vertically and laterally, is a function of tine type and spacing. Table 2 gives the evenness of grass response with the depth and spacing of the different types of tine (10). It is clear that, in this example at least, the simple tine placed the slurry deeper than both the winged and inclined tines and... [Pg.213]

Factorial designs are usually discussed in terms of coded factor spaces. Table 14.1 shows some of the common coding systems for two- and three-level designs. Our emphasis in this chapter will be on the two-level designs. [Pg.317]

Design water rates should be based on the ground areas within each unit s battery limit when separated by at least the distance specified in the spacing table. When the spacing within units is such that the processes are separated by at least 50 ft (15 m), the area demand may be calculated separately by using Figure 7-8, but, at a minimum, should be 3,000 gpm (11,400 1/min). [Pg.169]

Try to fit your table to the width of one page. If necessary, exchange rows and columns, or break a long table into smaller ones. Avoid horizontal tables (landscape orientation). Single-space table titles and table entries to minimize unused space. Similarly, plan your table so that there are no empty cells (or very few). [Pg.536]

Even at the lowest energy state, where m = 0, there is an energy of vibration called the zero-point energy. There is only one vibrational state at each value of m, and the energies of the sequence are evenly spaced (table 4.14). [Pg.96]

Chemists fill chemical equations with symbols because they think it looks cool and, more importantly, because the symbols pack a lot of meaning into a small space. Table 8-1 summarizes the most important symbols you find in chemical equations. [Pg.115]

Mathematical operations have specific rules for the use of mathematical symbols with SI units. A space or a half-high dot represents the multiplication of units a negative exponent, horizontal line, or slash represents the division of units, and if these mathematical symbols appear in the same line, parentheses must differentiate them. The percent sign (%) denotes the number 0.01 or 1/100, so that 1%= 0.01, 30% = 0.30, and so forth. Arabic numerals with the appropriate SI or recognized unit indicate the values of quantities. Commas are not used to separate numbers into groups of three. If more than four digits appear on either side of the decimal point, a space Table 3. Prefixes. separates the groups of three. [Pg.246]

The hb-PAEs of hb-P13 and hb-P15 contain NLO-active azo-functionalities, which are soluble, film-forming, and morphologically stable (Tg > 180 °C). Their poled films exhibited high SHG coefficients ( 33 up to 177pm/V), thanks to the chromophore-separation and site-isolation effects of the hyperbranched structures of the polymers in the three-dimensional space (Table 5) [28]. The optical nonlinearities of the poled films of the polymers are thermally stable with no drop in d33 observable when heated to 152 °C (Fig. 8), due to the facile cross-linking of the multiple acetylenic triple bonds in the hb-PAEs at moderate temperatures (e.g., 88 °C). [Pg.42]

Next, we discuss representations and character tables. A group of order h can be represented by h matrices, each of dimensions hxh. Flowever, there exist so-called irreducible representations for each group, which are block-diagonal submatrices, which span the space. Table 7.6 presents the character tables for all 32 crystallographic point groups, and some other groups as well. Table 7.7 is an abbreviated form of Table 7.6. [Pg.392]

Before discussing the possibility of gas-phase cyanopolyyne chemistry, it seems necessary to summarize the present status of carbon chain molamle detections in interstellar space. Table 7 presents an overview of where these molecules are found and their respective abundances. These tables are an abbreviated update from Table 1 taken from Winnewisser and Walmsley (1979). It is seen that these molecules are found essentially in every type of molecular cloud from the cold dark cloud to the warm circumstellar environment, underlining the trend which has been observed over the past few years namely that complex organic molecules are not limited to a few sources only (in particular to the galactic center sources) but that they are spread over sources with rather different physical conditions. A qualifying statement may be in order here. [Pg.61]

Spectroradiometric data should be provided by the lamp manufacturer upon request. In cases where the spectral power distribution data are obtained separately from the calibration of the narrowband radiometer, it can be difficult to place the two devices exactly at the same point in space (Table 2). It is then of great importance to at least place radiometers at the same distance used for calibrating the lamp if accurate calibration measurements are to be achieved. [Pg.56]

There are a few options that you can use with the Setup program. To use them, you place them after the SETUP at the command line, separated by a single space. Table 13.2 details these Setup startup switches. [Pg.531]


See other pages where Space table is mentioned: [Pg.45]    [Pg.16]    [Pg.294]    [Pg.176]    [Pg.86]    [Pg.99]    [Pg.96]    [Pg.102]    [Pg.296]    [Pg.262]    [Pg.200]    [Pg.140]    [Pg.141]    [Pg.141]    [Pg.141]    [Pg.411]    [Pg.228]    [Pg.87]    [Pg.583]    [Pg.7]    [Pg.115]    [Pg.290]    [Pg.216]    [Pg.159]    [Pg.264]    [Pg.108]    [Pg.107]    [Pg.681]    [Pg.115]    [Pg.200]    [Pg.135]    [Pg.116]    [Pg.2601]   
See also in sourсe #XX -- [ Pg.18 ]




SEARCH



Plane-spacing equations, table

Space group spectrum tables

© 2024 chempedia.info