Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Basic information

Understanding cancer involves not only knowledge of the genetic changes that cause a normal cell to develop into a tumour cell but also the response of the whole body to a tumour, factors that increase or decrease the risk of development of a tumour and the current therapies that arrest growth of, or kill, tumour cells. These topics are discussed in this chapter, but some basic information is required first the cell cycle, the growth of a tissue, the fuels used by tumour cells and, finally, the role of genes. [Pg.486]

When regulation of the cycle fails, a mass of tissue is produced. [Pg.486]

Normal adult tissue can be separated into three classes  [Pg.486]

Normally, proliferation is inhibited when a tissue reaches its optimal size, due to contact between cells which is [Pg.486]

An oncogene has been compared with a car with a stuck accelerator the car moves even if you take your foot off the accelerator. However, the car will stop if the brake is pressed (this is the effect of the tumour suppressor gene). A mutation in or the loss of a tumour suppressor gene is analogous to a faulty brake, i.e. it no longer halts proliferation of the abnormal ceU (Vogelstein Kinzer, 2004). [Pg.487]


When you open any file of an element in the periodic table, you will find a small table with some basic information about that element. Here s how you use that table ... [Pg.220]

A. Lopez, ed., A Complete Course in Canning Book I Basic Information of Canning The Canning Trade, Inc., Baltimore, Md., 1987. [Pg.455]

The systematic study of piezochromism is a relatively new field. It is clear that, even within the restricted definition used here, many more systems win be found which exhibit piezochromic behavior. It is quite possible to find a variety of potential appUcations of this phenomenon. Many of them center around the estimation of the pressure or stress in some kind of restricted or localized geometry, eg, under a localized impact or shock in a crystal or polymer film, in such a film under tension or compression, or at the interface between bearings. More generally it conveys some basic information about inter- and intramolecular interactions that is useful in understanding processes at atmospheric pressure as well as under compression. [Pg.168]

Each detection technique also gives different information about the identity, quantity, and physical properties of the molecules in the mixture. Detection is often the focus of electrophoresis, and usually yields basic information about the mixture being studied. [Pg.178]

Prompt instrumentation is usually intended to measure quantities while uniaxial strain conditions still prevail, i.e., before the arrival of any lateral edge effects. The quantities of interest are nearly always the shock velocity or stress wave velocity, the material (particle) velocity behind the shock or throughout the wave, and the pressure behind the shock or throughout the wave. Knowledge of any two of these quantities allows one to calculate the pressure-volume-energy path followed by the specimen material during the experimental event, i.e., it provides basic information about the material s equation of state (EOS). Time-resolved temperature measurements can further define the equation-of-state characteristics. [Pg.54]

In reaction engineering, laboratory catal54ic reactors are tools or instruments to study how catalysts behave in some desired reaction. Quantitatively, the investigator wants to know how much of the desired product can be made per unit weight of catalyst, how much raw material will be used, and what byproducts will be made. This is the basic information needed to estimate the costs and profitability of the process. The economic consequence of our estimates also forces us to clarify what the rate limiting steps are, and how much transfer processes influence the rates, i.e., everything that is needed for a secure scale-up. Making the... [Pg.5]

The many methods used in kinetic studies can be classified in two major approaches. The classical study is based on clarification of the reaction mechanism and derivation of the kinetics from the mechanism. This method, if successful, can supply valuable information, by connecting experimental results to basic information about fundamental steps. During the study of reaction mechanisms many considerations are involved. The first of these is thermodynamics, not only for overall reactions, but also on so-called elementary steps. [Pg.115]

M. Henzler. Top. Curr. Phys. 4, 117, 1977. Basic information on use of LEED to analyze steps and step disorder on surfaces. [Pg.263]

More extensive data can be found in standard references such as Perry s Chemical Engineering Handbook or the CRC Handbook of Chemistry and Physics. The following table, however will provide some basic information for many common calculations that the process engineer can easily run on his or her PC. [Pg.497]

The following is some basic information on writing a LINGO optimization model. The general form of the model is as follows ... [Pg.312]

The above values are based on the assumption that argon is combined with nitrogen, adjusting the molecular weight to 28.16. Other gases present in the atmosphere air are normally ignored, as these represent less than 0.003% (by volume, 27.99 ppm). Table 4.5 provides some basic information on these trace gases. [Pg.64]

The foregoing example is but one of the difficulties encountered in analysis of orthotropic materials with different properties in tension and compression. The example is included to illustrate how basic information in principal material coordinates can be transformed to other useful coordinate directions, depending on the stress field under consideration. Such transformations are simply indications that the basic information. [Pg.90]

In other companies, senior managements knowledge of operations and process safety may be limited, meaning that your first t2isk is to provide basic information. In either case, its obviously important to assess—in advance— the information needs of the people whose endorsement you seek. Otherwise,... [Pg.11]

Column manufacturers normally provide basic information about their columns, such as plate count, particle size, exclusion limit, and calibration curve. This information is necessary and fundamental, however, it is not sufficient to allow users to make an intelligent decision about a column for a specific application. For example, separation efficiency, the dependence of separation efficiency on the mobile phase, the ability to separate the system peaks from the polymer peak, the symmetry of the polymer peak, and the possible interaction with polymers are seldom provided. [Pg.500]

It is important to note that comparison of results from these charts does not yield exact checks on any particular fitting. Calculadons should never be represented as being-more accurate than the basic information. Therefore,... [Pg.90]

To properly recommend and quote fans for a specific application, the process engineer must either (a) evaluate the manufacturer s rating tables or (b) furnish proper data for others to do this. The basic information includes... [Pg.535]

Crystals have definite geometric forms because the atoms or ions present are arranged in a definite, three-dimensional pattern. The nature of this pattern can be deduced by a technique known as x-ray diffraction. Ihe basic information that comes out of such studies has to do with the dimensions and geometric form of the unit cell, the smallest structural unit that, repeated over and over again in three dimensions, generates the crystal In all, there are 14 different kinds of unit cells. Our discussion will be limited to a few of the simpler unit cells found in metals and ionic solids. [Pg.246]

The basic information involved in designing with plastics concerns the load, temperature, time, and environment. As reviewed throughout this book there are other performance requirements that may exit such as aesthetics. [Pg.37]

Testing yields basic information about any materials (plastics, steels, etc.), its properties relative to another material, its quality with reference to standards or material inspections, and can be applied to designing with plastics. Examples of static and dynamic tests are reviewed in Chapter 2. [Pg.297]

Handbook of Plastics Materials and Technology , Irvin I. Rubin John Wiley Sons (1990) ISBN 0471096342. Essential information from acetal to XT polymer. This single source comprises 119 chapters of in-depth basic information about plastic materials, properties, processing, assembly, decorating and industry practices-all presented in a readily accessible and consistent format. Also features a wealth of useful auxiliary information and tables. [Pg.599]

This type of basic information has been reviewed for many centuries with different types of materials and more recently (in just over a century) with plastics. Recognize the design basics and/or fundamentals remain the same. Their interpretation and applicability improves with time. It is like saying 2 + 2 = 4 for the many past centuries. Now we can say it with a computer where in the recent past we used an abacus, adding machine, slide rule, etc. [Pg.710]

Identify basic information to consider when developing a teaching plan. [Pg.52]

Basic Information to Consider When Developing a Teaching Plan... [Pg.54]


See other pages where Basic information is mentioned: [Pg.146]    [Pg.327]    [Pg.389]    [Pg.202]    [Pg.1]    [Pg.199]    [Pg.50]    [Pg.680]    [Pg.534]    [Pg.583]    [Pg.154]    [Pg.13]    [Pg.390]    [Pg.347]    [Pg.1128]    [Pg.956]    [Pg.1084]    [Pg.291]    [Pg.145]    [Pg.181]    [Pg.600]    [Pg.600]    [Pg.611]    [Pg.613]    [Pg.616]    [Pg.1222]    [Pg.54]   
See also in sourсe #XX -- [ Pg.5 ]




SEARCH



Basic Information About Water Chemistry

Basic Information Entry

Basic information required

Basic toxicity information

Nuclear magnetic resonance basic information

Nutrition basic information

Sulfoxides infrared spectra, basic information

© 2024 chempedia.info