Where and When

Fig. 16. Reaction of a delayed release DIR coupler and oxidized developer (Dev ). A delayed released DIR coupler permits fine-tuning of where and when the development inhibitor (In) is generated by releasing a diffusible inhibitor precursor or "switch" as a function of image formation. This permits control...

Verification requirements are not limited to product/service features and characteristics. One may need to consider who carries out the verification, where and when it is carried out, and under what conditions and on what quantity (sample or 100%) and standard of product (prototype or production models). 

Whilst you can, as an open learner, study where and when you want, do try to find a place where you can work without disturbance. Most students aim to study a certain number of hours each day or each weekend. If you decide to study for several hours at once, take short breaks of five to ten minutes regularly as it helps to maintain a higher level of overall concentration. 

A failure to carry out these programs where and when necessary results in reduced heat transfer rates, higher energy costs, corrosion, a lowering of equipment life, and probably operational safety issues. 

The results of environmental monitoring exercises will be influenced by a variety of variables including the objectives of the study, the sampling regime, the technical methods adopted, the calibre of staff involved, etc. Detailed advice about sampling protocols (e.g. where and when to sample, the volume and number of samples to collect, the use of replicates, controls, statistical interpretation of data, etc.) and of individual analytical techniques are beyond the scope of this book. Some basic considerations include the following, with examples of application for employee exposure and incident investigation. 

The final decision on how large the plant will be is made by the board of directors. This, then, is one of the four major decisions made by them. The others are whether, where, and when to build. The factors the engineer must weigh in determining an optimum plant size will be considered next. 

Phosphorus also permits the postmodification of the backbone of dendrimers. Indeed charges, and also various functional groups, can be selectively introduced into the internal voids. Such a transformation can be performed where and when required. 

The choice of reaction conditions for the system vinylchlorosilane/LiBuVsubstrate (e.g. temperatures, solvents) determines where and when a reaction takes place on the silene forming pathway ... 

Among the large number of fluorescent proteins known today several proteins have been identified which contain unique properties, for example the ability to change the color of their fluorescence [1, 90], These fluorescent proteins can be turned on at will, where, and when you want. 

Correct sampling is the cornerstone of reliable analysis. The analyst must decide in conjunction with technological colleagues how, where, and when a sample should be taken so as to be truly representative of the parameter that is to be measured. 

There are several examples from the literature that show that corrosion has seriously (and often quickly) deteriorated sewer networks (EWPCA, 1982 Aldred and Eagles, 1982 ASCE, 1989). Although corrosion is difficult to predict, the number of examples and extent of the problems observed have given a comprehensive knowledge of where and when concrete corrosion may exist. This knowledge can briefly be summarized as follows. 

Details are also instances and examples. Don t just say you love the Harry Potter series by J.K. Rowling. Show it, instead, by describing where and when you bought your first copy of Harry Potter and the Sorcerer s Stone, or how you missed soccer practice because you were caught up with reading Harry Potter and the Order of the Phoenix and forgot the time. Scenarios that illustrate your point are also great details. Take your reader to your... 

The cylinder of an automobile is a confined space and we have explosions all the time making our vehicles run, but they are under control where and when we want them and the receptor and the vectors are well understood. 

Because of the high iron demand by the nitrogenase enzyme, iron availability is thought to potentially be controlling where and when N2 fixation takes place. In the surfece waters, this supply is controlled by the aeolian dust flux. In deep waters,... 

Successful application of chromatographic techniques relies on resolution, or the resolving power of the particular technique used. Resolution is defined by the relation of selectivity and efficiency of the chromatographic gel media (i). Selectivity is a function of the mode of separation of the gel (i.e., gel filtration, ion exchange, etc.) and efficiency is a function of the support matrix (Le., particle shape, size distribution, mechanical stability, density of interactive chemical groups, etc.). Each of the various modes of chromatographic separation have unique advantages that dictate where and when in a purification process these techniques should be used. 

This raises the burning question starting out from a simple substance (not to say elementary) made up of photons, electrons, neutrinos, neutrons and protons, what mechanisms exist for synthesising the many and varied nuclei to be found in nature This in turn raises the question where and when did these processes take place, and how do they fit together chronologically as the Universe has evolved ... 

Spatially confined self-assembly has been further confirmed by localizing ther-molysin on certain areas of a PEGylated surface. Upon immersion of this modified surface into a solution containing self-assembling precursors, nanostructures were formed in the vicinity of the enzyme, as observed through congo-red staining (Fig. 7c) [21]. Thus, enzyme-assisted self-assembly allows for construction of supramolecular polymers with spatiotemporal control, i.e. where and when they are required. 

Coull, J.T. and Nobre, A.C. (1998) Where and when to pay attention the neural systems for directing attention to spatial locations and to time intervals as revealed by both PET and fMRI. / Neu-rosci 18 7426-7435. 

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