Characters problems with

Problems with the compatibility of the dyes can also arise in dyeing mixtures of PA and PAC fibers. Such blends are produced, e.g., for skiwear. The cationic dyes used for the PAC component do not dye normal PA fibers. Acid and metal-complex dyes leave PAC fibers practically white. Sulfo group containing 1 1 metal-complex dyes possess a zwitterionic character and therefore can be applied in low concentration in the same bath with cationic dyes, without the occurrence of precipitation. In this manner, one-bath dyeing can be carried out. The stability of... 

New technologies now are appearing to avoid problems with traditional energy approach which was created in developed countries. These new technology are very suitable from the point of view defense from terrorist attacks, because by their nature it mach with distributed character of computer networks. 

The problem with ozone probably arises at least partly from the fact that this molecule has singlet diradical character (Section 8.2) it is approximately a species in which two electrons, although having opposite spin, are not paired in the same orbital [125] ... 

There also were problems with text processors in that they did not have a wide enough range of special symbols for scientific usage. The highest quality daisy-wheel printers were limited to 96 characters and often could not stop in the middle of a manuscript to change print wheels. Thus one was required to draw these special characters in the manuscript manually. This of course was another source for error and omission in preliminary drafts. Finally, the special symbols that were available were generally printer dependent, making it difficult for someone with a different printer to obtain the same symbols. 

The naturals are omitted because they are mixtures of different components, each with its distinct vapor pressure. The vapor pressure of an individual component is the parameter of interest, and not that of a mixture. The problem with naturals in the classical blotter observation test is that their odor character changes during the observation, and not just their intensity. 

If a case report form must be used, the form can be scanned or faxed into a computer system. This form is then read using optical character recognition (OCR) and converted to raw data. The accuracy of OCR applications is high, but the data must be checked to ensure quality. The OCR software can have problems with ambiguous data. For example, the letter 1 and number 1 can look the same on paper. The elimination of the data entry step saves both time and money. Careful design of the case report form and good instructions to the end user will minimize entry errors. 

FIGURE 3.2 Problems with character recognition in chemical names. 

Control of Precipitate Formation. The problem with the character of the precipitated HML proved to be easily resolved with the particular lignin under study. When the addition of the glacial acetic acid was carried out at temperatures only as high as 50 °C, the reaction product was granular and did not retain large quantities of water in a semisolid mass. However, this condition required a redispersion of the solid after the oxalic acid catalyst had been added. This could be accomplished with mixers designed to homogenize and disperse materials in liquids. 

Counting the isomers arising by addition to, or substitution in, a basic framework is a mathematical problem with many practical applications in chemistry. In classical organic chemistry, for example, the number of derivatives of a compound was often cited as proof or disproof of structure. Point group theory that uses concepts familiar to most chemists and is easy to apply when the number of addends/substituents is small provides a unified method for deciding, for example, the number of dihydrides C70H2 of fullerene C70, or the number of trihalo-derivatives C2oHi7FClBr of dodecahedrane. All that is needed to determine such matters is the availability of the permutation character. Ter, of the atoms in the parent molecule. 

Problems with print quality are easy to identify. When the printed page comes out of the printer, the characters are too light or have dots missing from them. Table 10.4 details some of the most common print quality problems, their causes, and their solutions. 

Generally speaking, thin-layer chromatography (TLC) has a large number of applications. The first problem with which the analyst is confronted concerns gathering information regarding the mixture to be separated, in terms of mixture polarity and the range of molecular masses. In the case of hydrocarbons that have one no-polar character, an adsorption separation technique is... 

If for any given compound two or more structures can be written differing only in the distribution of electronSj the properties of that compound will not be those to be expected of any of the formulas but rather they will be those to be expected of a hybrid of them all. An ion or a molecule in which resonance can occur will always be more stable than one-in which it cannot. It is obvious that when the principle is stated in such general terms no attempt has been made to explain the phenomenon, but rather the conditions have been described for recognizing its occurrence. Furthermore, since each covalent bond may have "a certain amount of partial ionic character, different electronic structures may actually be written for every chemical compound. The problem with which we are con-... 

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