Widening

A widening of the temperature differences across columns, since light nonkey components cause a decrease in condenser temperature and heavy nonkey components cause an increase in the reboiler temperature. 

Flammability limits are also affected by temperature. An increase in temperature usually widens the flammable range. 

The main stem of the nitrometer widens into a bulb and then narrows to form a graduated tube. The usual graduation is of 8 ml. in o o2 ml. divisions. The graduations continue to the tap Tj at the top of the stem. Above Tj there is a small reservoir H to prevent splashing of the concentrated alkali when gas is expelled from the nitrometer and also to ensure that a small excess of potash is left as a liquid seal above the tap T ,. 

Bubbler. I ve done it widening the end of a glass tube, then puting in the hole with pression a piece of glass sponge (for feet) and... 

The tray-free area can be decreased at intervals from top to bottom as the density differential between the aqueous phase and the working solution widens. This adjustment maintains a nearly constant depth of coalesced working solution beneath each tray. For this type extractor the distance between trays (spacings) is constant from top to bottom. Alternatively, the tray area can be held constant and the height of the coalesced layer beneath the tray permitted to vary, thus providing the needed pressure drop for flow. 

As can be seen in Figure 8, the proportion of world pig iron produced in the United States has decreased dramatically since 1950. Also notable is the widening gap between pig iron and steel production, indicating the increasing use of recycled iron or scrap (see Recycling, ferrous metals) and alternative iron sources such as DRI and HBI. The increased demand for scrap is reflected in scrap iron prices (Fig. 9), which in turn have spurred growth in direct reduction processes. 

Quantities of potassium sulfate produced and consumed as potassium magnesium sulfate [13826-56-7] K2S0-2MgS04, are omitted in the U.S. Department of the Interior reports as classified information. Consumption data for potassium compounds identified as other potassium salts imply that the amount of potassium magnesium sulfate consumed in the United States is about double that of K SO. This gap is expected to widen as soils become more depleted of natural magnesium- and sulfur-containing minerals. 

The concept of an optimum reboiler or condenser AT relates to the fact that the value of energy changes with temperature. As the gap between supply and rejection widens, the real work in a distillation increases. The optimum AT is found by balancing this work penalty against the capital cost of bigger heat exchangers. 

Epoxidized natural mbber is stiU a strain crystallising mbber and therefore retains the high tensile strength of natural mbber. However, as can be seen from Table 5, ia other respects they have very Httie ia common. The epoxidation renders a much higher dampiag mbber, a much-improved resistance to oil swelling (iasofar as a 50 mol % modified natural mbber has similar oil resistance to a 34% nitrile mbber), and much-reduced air permeabiUty. This latest form of modified natural mbber therefore widens the appHcations base of the natural material and enables it to seek markets hitherto the sole province of some specialty synthetic mbbers. 

As CPU performance increases, the gap between CPU and disk and memory speeds will continue to widen. As limits of technology are approached, other techniques will be needed to gain performance advantages more functional units, multiple processors, and so on. These approaches are discussed in the sections on minisupercomputers and parallel processing. 

To be successful, the scope of an expert system must be limited to a narrow group of common problems that are readily solved by conventional means, and where the return on investment is greatest. Widening the scope usually requires more complex methods and treats less common problems having lower return. 

---