Materials Literature
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In contrast to the previous chapter, this chapter presents solids that are not regular (or semi-regular). Smooth, closed surfaces may form part or all of the boundary of such solids such that the outward normal of the surface at any point is everywhere continuous in all directions about that point (for example, a sphe…
INTRODUCTION With the advent of more and more sophisticated pharmaceutical products of varying stabilities, toxicities, solubilities, and bioavailabilities, there has arisen the requirement for the development of generic drug delivery systems that will enable delivery of these molecules via various routes, with contro…
INTRODUCTION Scanning transmission electron microscopy (STEM) was invented by Baron Manfred von Ardenne at Siemens in 1938 (1), 6 years after the invention of the first transmission electron microscope by Knoll and Ruska in 1932 (2), and its resolution was lower than that of transmission electron microscope at that ti…
Digital human models exhibit a variety of forms. Some use two-dimensional fi gure templates, while others are represented by three-dimensional geometry. No matter what form is taken, the basic requirement for anthropometric data holds. It defi nes body sizes of the digital human model, which refl ects its similarity to t…
For most unit processes, mixing is a critical supporting step causing (1) contacts between reactants, (2) creation of interfacial area, or (3) reduction of the ‘‘film’’ thickness (to maximize the diffusion gradient across an interface). In design, the objective is to ensure, to the extent feasible, that mixing is not a…
IISection
To analyze energy consumption and estimate the cost-eectiveness of energy conservation measures, an auditor can use a myriad of calculation methods and simulation tools. e existing energy analysis methods vary widely in complexity and accuracy. To select the appropriate energy analysis method, the auditor should con…
A quarter century has passed since Yatvin et al. (1) suggested that low pH-sensitive liposomes (Scheme 1) might provide a means to preferentially localize drug release in a tumor. They made this suggestion based upon their insight that the pH in the tumor environment is 0.2 to 0.5 pH units more acidic than in the bloo…
Graphite in its various forms is a very important industrial material, it is used in a wide variety of specialized applications. These include high temperature uses where the oxidative reactivity of graphite is very important, such as electric arc furnaces and nuclear reactors. Graphite intercalation compounds are use…
Transepidermal water loss (TEWL) is considered to be an indicator of the func- tional state of the cutaneous barrier (1-3). TEWL is believed to be related to irritant sensitivity and has been used to evaluate the clinical condition of the skin. Damage to the skin barrier from skin disease and physical or chemical trau…
The process starts with the preparation of polymer solutions, for instance, polyvinyl alcohol (PVA), and metal compounds, for instance, 3dmetal chlorides. Afterwards, the solutions with a certain concentration are mixed in the ratio “PVA-metal chloride” equals to 20:1-1:5. Then the prepared solutions are dried till th…
When we develop unprecedented product systems, we should begin work from the grandest vision of the system description, the customer need. The reason for this is that it is the way users of systems become aware that they are not currently capable of satisfying some unfullled need. We commonly do not think of the detai…
Allen, M. 1968. Simple conditions for growth of unicellular blue-green algae on plates. J. Phycol., 4: 1-4. Augusto da Costa, A.C. and F.P. de Franca. 1998. Short communication: Cadmium uptake by Spirulina maxima: Toxicity and mechanism. World Journal of Microbiology and Biotechnology 14: 579-581.
Investigation of magnetothermal phenomena in magnetic materials is of great importance for solving fundamental problems of magnetism and solid state physics, as well as for technological applications. These phenomena have a strong influence on such physical values as entropy, heat capacity and thermal conductivity, and…
The Spinning Cone Column (SCC) is a multistage liquid-gas contacting unit with increasing applications in food processing. SCC is a type of distillation equipment that operates under vacuum pressures. It presents many advantages because of its mass transfer efficiency, the short processing times involved, and its abil…
The segregation of impurities can influence the solidification structure which in turn influences the crystallographic texture. The solidification structure determines the orientations of the crystals solidifying from the steel melt, and these crystals subsequently undergo solid-state transformations to give the resul…
Methionine and cysteine/cysteine (Figure 5.1) are among the less commonly occurring amino acids in proteins (cysteine, 1.8%; methionine, 2.6%).1 Cysteine can be present as cysteine or as a disulde (occasionally as trisulde);2 the low level of methionine was useful in obtaining polypeptide fragments via cyanogen brom…
Classical polymer chemistry emphasizes materials derived from about a dozen elements (including C, H, O, N, S, P, Cl, and F). The following two chapters deal with polymers containing additional elements. The present chapter focuses on inorganic and metal-containing polymers containing organic units.
This chapter of the book is written primarily for two categories of environmental compliance personnel: Unexploded military ordnance, also known as UXO, is present at most military facilities and particularly firing ranges, both past and present. It has accumulated at those locations since they first were opened. When…
Valid versus Heuristic .....................................................................................80 4.3 Stable Tetrahedral and Octahedral Molecules: Especially Scaling Properties .....81 4.4 Small (Usually Metastable) Free-Space Clusters ........................................... 83 4.4.1 SiOn, GeOn, and C…