Some Practical Suggestions

It is seen that in spite of taking precautions for the proper installation and careful operations, some of the instruments and controls do not read/control correctly. In such cases, the inferences drawn for the process conditions or equipment could be erroneous. 

One shall look objectively and logically at the prevailing situation in the plant. 

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Schlegel H B 1989. Some Practical Suggestions for Optimizing Geometries and Locating Transition States. In Bertran J and IG Csizmadia (Editors). New Theoretical Concepts for Understanding Organic Reactions. Dordrecht, Kluwer, pp. 33-53. 

Some practical suggestions for water system design and validation that will also make it easier to comply with the regulations include the following ... 

Finally, the importance of choosing the precursor salts and the precipitating agents before any operation should be emphasized general principles for this cannot be set forth, only some practical suggestions can be made, as follows ... 

To spare you as much hand-wringing as possible, this chapter presents some practical suggestions on how to begin writing your short essay. Although all writers must find the methods that work best for them, you may find some of the following ideas helpful. 

You can prevent your readers from succumbing to a similar case of the blahs by developing a vigorous prose style that continually surprises and pleases them. As one writer has pointed out, all subjects—with the possible exceptions of sex and money—are dull until somebody makes them interesting. As you revise your rough drafts, remember bored readers are not born but made. Therefore, here are some practical suggestions to help you transform ho-hum prose into lively sentences and paragraphs ... 

To help you avoid possible paralysis from indecision over word choice, this chapter offers some practical suggestions on selecting words that are not only accurate and appropriate but also memorable and persuasive. 

In this chapter, I hope to have imparted to the reader a taste of CE, and some practical suggestions that will be useful in developing a method for the analysis of a specific compound(s). By using the basic principles associated with electrophoretic separation as discussed here, and applying a systematic approach to assess the factors that influence the resolution of the analyte(s) under study, it is likely a successful analytical method can be developed for just about any analyte of interest. In many of the core chapters that follow this chapter, specific methods are covered in detail with an analyte-specific focus— however, method development of some kind will be found in the vast majority one of the 55 chapters that constitute this handbook. 

A variety of chemical lecture demonstrations involving unstable or highly reactive materials which have led to accidents are reviewed, and practical suggestions made to avoid such incidents [1]. Safety aspects are discussed and some relevant books and articles reviewed [2],... 

Some have suggested my diodes point the wrong way. They point the direction I intend current to flow while actual polarities may need to be reversed in practice. I don t want to waste time with conventions that don t make sense. 

Whether or not chlorothalonil is a true dermal sensitizer in humans or strictly a skin irritant remains controversial. Some investigators suggest that repeated exposure results in an enhanced irritant response, whereas others suggest that it is a potent contact allergen. It is noted that relatively few cases of allergy to chlorothalonil have been reported despite widespread use for over 20 years. Furthermore, at a plant that produces the chemical cases of work-related contact dermatitis have not been reported for years after adoption of good hygienic practices. ... 

Comorbid anxiety and depressive features are common in clinical practice, and DSM-IV has included mixed anxiety-depression in its appendix of conditions needing nosological refinement. The presence of comorbid anxiety has prognostic implications. For example, prospective studies of patients with depression have found that the co-occurrence of panic attacks was correlated with a poor outcome (Coryell et al. 1988 van Valkenburg et al. 1984). Some evidence suggests that such patients do better with MAOls. Likewise, patients with depression and obsessive-compulsive disorder may be more resistant to treatment, even with SSRls (Hollander et al. 1991)... 

In a similar way to particle diameter and column length, there are also some practical limits that must be Imposed on the analysis time. It must be again emphasized that these limits are arbitrary in nature, and may be changed by the user if so desired. A minimum analysis time of one minute Is recommended to allow time for sample manipulation and fraction collection and at the other extreme a maximum analysis time of one hour is considered acceptable. It is seen that a practical window exists between a separation ratio of 1.01 and 1.3. Furthermore, at a separation ratio of 1.3, extremely low inlet pressures must be employed to ensure the analysis time is not less than 60 seconds. Thus, the limitation of analysis time to a minimum of 60 seconds, means that for very simple mixtures, columns with excess efficiencies must be used. As has already been suggested, such columns can be overloaded and the excess analysis time also traded in for increased sample load. 

The second half of the chapter then suggests some practical steps to help you in working to develop, improve, Eind change yourself. It covers ... 

This reaction is difficult to avoid, but it can be minimized by working with these melts at the lowest practical temperature. Some authors suggest purging the melt with 02 or N02 in order to oxidize the N02 to NOj, but these procedures may lead to the production of still more impurities such as hydroxide, superoxide, and hydrogen ion [39]. By far, the best strategy is to use the highest quality starting materials available and to subject these materials to careful recrystallization before... 

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