Distributions, physical

C. R. Bigelow, Hai ardous Materials Management in Physical Distribution, Van Nostrand Reinhold, New York, 1994. 

Systems Approach Physical distribution is a term applied to a systems concept that comprises the entire spectrum of materials movement. The system begins with the storage and handling of raw materials and follows right on through the packaging and disposition of the finished product. The aim is the attainment of the lowest over-... 

These results, presented without proof, are important and hold for any independent physical distributions. In words, they say that the mean of a sum is the sum of the means the mean of a prodiift is the product of the means for any distribution. Furthermore, the variance of the sum is the sum of the variances, and the variance of the product is the product of the variance plus the mean of one variable squared, times the other variables variance, plus the converse - again for any distribution. 

Because a chemical step is imposed on top of the physical distribution process of partition, there is a great potential for selectivity, as noted by Schill et al, (49>50), Such factors as pH, type and composition of the organic phase, and ionic strength of the aqueous phase can be used to control relative retention. The concentration and type of counterion mainly control the absolute retention. 

There is no such thing as a pure polymer. All polymers comprise molecules that exhibit chemical and physical distributions of many variables these include molecular weight, branching, steric defects, molecular configuration, preferential chain orientation, and crystallite size and shape. The properties and characteristics that we exploit in polymers are controlled by the overall balance of these distributions. 

Professional Lectures or Presentations (No physical distribution, noncommercial)... 

McKinnon, Alan C. Physical Distribution Systems. New York Routledge, 1989. 

In Section V, deactivation of catalyst pellets and reactor beds during residuum hydroprocessing is considered. The chemical nature of the metal deposits is described, including a discussion of the physical distribution of these poisons in aged catalysts and reactor beds. Models to predict... 

Canel C, Das SR (1999) The uncapacitated multi-period facilities location with profit maximization. International Journal of Physical Distribution Logistics 29 409-433... 

Extraction by physical distribution involves the transfer of a discrete molecular entity from the aqueous phase to an inert solvent and has little relevance to extractive metallurgy. 

The physical distribution of an element or compound in different phases that are in contact with each other... 

If the colorant is to be fed separate from the natural pellets, such as by a slave feeder, the only concern is that the concentrate size and shape are uniform and consistent from lot to lot. Ideally, to increase the physical distribution of color and reduce the amount of distributive mixing needed from the processor screw, the coloring agent needs to be as small and finely divided as possible. Some concentrate producers have even patented the size and shape of concentrate, which are purported to perform with more consistency at lower dosage rates. 

However, two-dimensional networks appear to capture almost all of the important physics and chemistry of the problem. (Their dimensionality, two dimensions instead of the three of a real porous medium, is fundamentally incorrect.) Figure 6 illustrates a square-lattice network in which all tubes have the same length and connectivity but different radii. Important parameters for a network include the population distribution of radii, the physical distribution of those radii in the medium, and the connectivity (number of tubes that meet at a node). 

Distributed Global Memory A hardware and/or software mechanism for treating physically distributed memory as a global shared memory in the context of application development. 

---