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Research general

This chapter has called for a better utilization of diagrams in chemical edncational research generally and especially into the macro/sub-micro/symbolic representational triplet. [Pg.71]

In the United States, as in most other countries, individual informed consent is generally required before research may be done with a living, identifiable human being. Informed consent for research generally has two different justifications. First, it allows the potential subject to weigh for himself or herself the balance of risks and benefits from his or her participation in the proposed research. Second, it embodies the individual s autonomy and control over interventions in or about his or her own body. [Pg.75]

The non-uniform behaviour of proteins makes the measurement of their molecular mass difficult however, their rough estimation and purification are very important for biochemical research. Generally, phosphate buffer and tris-HC1 buffer (pH 7) are used for SEC for biological polymers, and some additives are required for further separation. Only 0.2 m sodium phosphate buffer was... [Pg.91]

Since most eye medications need to enter the eye for a pharmacological effect, ocular drug delivery is a major issue in ocular research. Generally, three routes into the eye have been described in the literature [24] ... [Pg.289]

Knowing that the better nonlinear constrained methods are now available, why have researchers generally been reluctant to accept them Perhaps the linear approach has an attraction that is not related to performance. Early in a technical career the scientist-engineer is indoctrinated with the principles of linear superposition and analysis. Indeed, a rather large body of knowledge is based on linear methods. The trap that the linear methods lay for us is the existence of a beautiful and complete formalism developed over the years. Why complicate it by requiring the solution to be physically possible ... [Pg.96]

Organic dyes having appropriate HOMO and LUMO levels to the redox potential of iodine and the conduction-band level of the semiconductor, respectively, could be utilized as well. As described in Section I, organic dyes such as 9-phenylxan-thene dyes have been used as photosensitizers in the early research. Generally, organic dyes have several advantages as photosensitizers ... [Pg.152]

Since around the mid-1990s, there has been a proliferation of hydrate time-dependent studies. These include macroscopic, mesoscopic, and molecular-level measurements and modeling efforts. A proliferation of kinetic measurements marks the maturing of hydrates as a field of research. Typically, research efforts begin with the consideration of time-independent thermodynamic equilibrium properties due to relative ease of measurement. As an area matures and phase equilibrium thermodynamics becomes better defined, research generally turns to time-dependent measurements such as kinetics and transport properties. [Pg.17]

Hydrocarbon oxidation is a maj or field of research. Generally, the most challenging aspect is not the oxidation itself but to achieve selectivity towards alcohols and aldehydes/ketones. Hence a large number of reports on iron-catalyzed procedures have appeared in recent years. The major drawback of the present systems is their low activity, presumably due to decomposition of H202 in the presence of transition metals (catalase activity) and oxidative degradation of the catalyst. [Pg.77]

Tektites are glass spheroids, which cover parts of North America (about 35-million-years old), central Europe (about 15-million-years old), western Africa (about 1.1-million-years old) and Australia-Asia (about 780000 years old). Most tektites are less than 1 mm in diameter (microtektites), although some are centimeter-sized (Koeberl et al., 1997, 1745). Researchers generally believe that tektites represent terrestrial surface materials that were melted and ejected high into the atmosphere because of large meteorite impacts (Koeberl et al., 1997, 1746). [Pg.75]

This book is intended primarily for sleep researchers, general- and neuropharmacologists, psychiatrists, and physicians who evaluate and treat sleep disorders. In addition, the volume will be useful to pharmacologists, pharmacists, medical students and clinicians of various disciplines who want to get an overall grasp of the clinical pharmacology of sleep. [Pg.250]

The T mapping is not given analytically from the beginning. It is determined with the help of the solution of a system of differential equations. In this sense we do not have it, but we can specify and research general properties of T. [Pg.365]

Now we review briefly some results obtained recently in the main directions of modern research general nanoscale quantum transport theory, atomistic transport theory and applications to particular single-molecule systems. [Pg.216]

Quantum chemistry allows more or less reliable calculation of individual molecular properties (reliability very much depends on the approximations used). Thus, the results of quantum chemical calculations can be used for similarity studies directly. Researchers generally try to characterize the extent of molecular similarity with a real number, and therefore several scalar functions are defined as molecular similarity indices. [Pg.46]

Hydration is a complex phenomena influenced by intrinsic (i.e., age, anatomical site) and extrinsic (i.e., ambient humidity, chemical exposure) factors. These factors can affect the mechanical properties of the skin and research has been performed to correlate hydration levels with the skin s friction coefficient.24 Hydration studies have investigated how increases and decreases in skin hydration correlated with the friction coefficient. In past studies researchers generally induced increases in skin hydration through water exposure. However, decreases in skin hydration were not experimentally induced and dehydration studies were performed between subjects with normal skin and subjects that had clinically dry skin.2 12... [Pg.433]

Global Research General Electric Company Niskayuna, New York... [Pg.860]

Although there is a great deal of debate about certain aspects of vanadium phosphate catalysts, Hodnett [4] has laid out a set of statements that most researchers generally agree upon ... [Pg.500]

Serum albumin was recognized as a principal component of blood as early as 1839 (Ancell, 1839). Early researchers generally referred to protein as albumen stemming from Ladn albus after the white color of flocculant precipitates produced by various proteins. Today, one should be aware that several proteins share this name but they are structurally and functionally unrelated to serum albumin, e.g., ovalbumin and prealbumin. Hence, care should be taken to distinguish ablumen, which refers to egg whites, from albumin or serum albumin. [Pg.153]

The following deal principally with applied research, general news, and feature articles ... [Pg.196]

There have been quite a few papers published which deal with fluorescence methods in prion research. Generally, three different approaches have been utilized. First, PrP chimeras with fluorescent proteins (e.g., green fluorescent protein, GFP) have been produced to study various aspects of cellular questions or protein folding. For example, fluorescence imaging techniques have been applied to study prion propagation in yeast (reviewed in [45]). Other examples concern attempts to study protein folding and the nature of aggregates. Kawei-Noma et al. analyzed the... [Pg.210]

Another approach to the study of the interstellar medium includes experiments carried out here on the Earth s surface. In such experiments, researchers attempt to simulate the conditions found in various regions of the ISM and to determine if chemical reactions hypothesized for those regions actually do occur. The study by scientists at SETI and NASA on amino acids, reported earlier in this chapter, is an example of such experiments. Researchers general approach in such experiments is to enclose certain fundamental substances (such as hydrogen, oxygen, and carbon monoxide) within a sealed container at the low temperatures and pressures common to the ISM and then expose those substances to the type of radiation that may be found in some particular region of the ISM, such as ultraviolet radiation or cosmic-ray-like radiation. The substances formed in such experiments can then be compared with those actually observed in the ISM. [Pg.45]

To secure interviews, job hunters need to show that they meet the common prerequisites of employment in a drug house or a sateUite company. Perhaps the most important prerequisite is completing an appropriate education, so aspiring researchers generally need baccalaureate or graduate degrees. [Pg.214]


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