It is difficult to imagine modem technology without small particles, 1-1000 nm in size, because virtually every industry depends in some way on the use of such materials. Catalysts, printing inks, paper, dyes and pigments, many medicinal products, adsorbents, thickening agents, some adhesives, clays, and hundreds of other diverse products are based on or involve small particles in a very fundamental way. In some cases finely divided materials occur naturally or are merely a convenient form for using a material. In most cases small particles play a special role in technology because in effect they constitute a different state of matter because of the basic fact that the surface of a material is different from the interior by virtue of the unsaturated bonding interactions of the outermost layers of atoms at the surface of a solid. Whereas in a macroscale particle these differences are often insignificant, as the 9 surface area per unit mass becomes larger by a factor of as much as 10 , physical and chemical effects such as adsorption become so pronounced as to make the finely divided form of the bulk material into essentially a different material- usually one that has no macroscale counterpart.
How are media born? How do they change? And how do they change us?
This book covers the technologies necessary to develop organ-on-a-chip systems, including microfabrication, 3D bioprinting, 3D cell culture techniques, biosensor design and microelectronics, microfluidics, data collection, and predictive analysis. It details specific tissue types that have been developed for disease modeling and drug discovery applications, including lung, liver, heart, skin, and kidney "on-a-chip" as well as recent progress in designing an entire "body-on-a-chip" system. It also provides an overview of other current and potential applications of these systems.
A Practical Guide to the Making of Bromide Prints by Contactand Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargement
With the increasing importance of information both as a lifeline of organizational administration and decision-making and as a product in its own right, office automation systems have become a paramount management concern. Choosing the appropriate system from the many types available and getting the most out it requires a degree of specialized knowledge that is seldom available to busy managers and executives. This volume, the first in a series of handbooks on office automation systems planning and implementation, is designed for the planner who needs to know how to evaluate an organization's system requirements, develop an overall systems strategy, and choose and work with consultants and systems vendors.
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