And changes over time

Sulfate concentration in streams and changes over time are discussed later in this article as one of the principal indices of human influences on stream water composition. Also, it will be shown that differences and similarities ia sulfate yields help in attaining a reasonable perspective on the importance of various hydrologic and geochemical characteristics of individual drainage systems. 

Editor You discussed the camouflage patterns of leaked explosives in soil and vegetation. How long after the puddles dry are MDDs able to find the scent It would seem that, since animals must be trained with particular suites of molecules, or aromas, that these should match the expected field aromas. Do decomposition products become more important and change over time ... 

The experimental discipline that is now known as combinatorial chemistry—although it is also known by such evocative terms as test tube or in-vitro evolution—arose almost 30 years ago. At that time, RNA evolution experiments showed that it was possible to create selection-pressure conditions in an experimental setting that caused certain species of RNA, but not others, to survive from one generation to the next [2], This work was complemented by advances of theories on how biopolymers organize themselves and change over time under specific conditions [3]. About 13 years ago, the use of evolution and Darwinian selection was proposed for RNA [4] and for proteins [5] in an... 

The aims of the food-monitoring programme 1998-2003 were (i) to monitor the content and changes over time of trace elements in food sold on the Danish market and (ii) to estimate the intake of trace elements with the entire diet and also to evaluate if any associated health consequences were likely to occur. 

The discipline that attempts to understand the evolutionary interrelationships of living things, trying to interpret the way in which life has diversified and changed over time is systematics, while taxonomy is primarily the creation of names and groups. 

Edinger, E. N., Jompa, J., Limmon, G. V., Widjatmoko, W., and Risk, M. J. (1998). Reef degradation and coral biodiversity in Indonesia Effects of land-based pollution, destructive fishing practives and changes over time. Mar. Pollut. Bull. 36, 617—630. 

With the proper separation of these areas, only the compression zone is exposed to material, thus reducing cleaning and change-over time of the tablet press. In addition to the machine sections, an understanding of other machine subsystems is necessary, such as the lubrication system and the diagnostic systems (safety systems) to achieve optimal machine performance. 

Geochemical availability is related to that fraction of a chemical that participates in transport processes afiecting the spatial distribution and changes over time. 

Several criteria such as number, distribution, size, shape, and change over time are used to differentiate between benign and malignant calcifications. Whereas larger typically benign calcifications usually do not... 

Systems are assumed to be static throughout their iifetimes It is rare for engineers to consider how the system will evolve and change over time. While designing... 

One of the key assumptions underlying the approach to safety described in this book is that systems adapt and change over time. Under various types of pressures, that adaptation often moves in the direction of higher risk. The good news is, as stated earlier, that adaptation is predictable and potentially controllable. The safety control structure must provide protection from and appropriate responses to the continuing influences and pressures that tend to degrade safety over time. More... 

The intent of this chapter is to present a review of the origin of certain of Heinrich s premises that became accepted as truisms, describe how they evolved and changed over time, and determine their validity. A summary of the observations made in this chapter follows. 

Individuals differ from others. They are not all alike. Individuals differ with themselves and change over time. They do not behave the same at all times. 

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