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Individual studies

Integration of Results - consists of integration of the model with results from Steps 4, 5 and 6, to determine consequences, probabilities and range of uncertainties. Two lypes of lesulis were calculated in this study individual risk as a function of distance from the installation, and isorisk curves. Both are risk indices and are related to the probability of death from ammonia inhalation. [Pg.447]

My second question is this You mentioned ferrfluramine. I presume you used the racemic mixture, which would mean that in the brain you would have both R and S fenfluramine and R and S norfenfluramine present. And since these differ widely in their effects on dopamine versus serotonin neuronal systems, have you studied individual enantiomers of either fenfluramine or norfenfluramine ... [Pg.23]

Two of the most widely used and detected UV filters in the environment and WWTPs are BP3 and 4-MBC. Thus, they were the selected compounds to study individually their degradation by fungi [44, 49]. Studies with BP1, not only a BP3 metabolite but also an industrial UV filter (but its use in cosmetics is not allowed) itself have also been performed. Studies in liquid media allow a better analysis and monitoring of many parameters, both the contaminant concentration and the fungal metabolic state such as glucose consumption and enzyme production. In these studies, the degradation process was performed with the fungus in form of pellets. [Pg.222]

Perhaps best known of Perrin s work is his spirited defense of kinetic theory and physical atomism entitled Les atomes (1913), in which he made use of his own work on Brownian motion, in combination with studies of cathode rays and x-rays, ionization, radioactivity, radiation, and quantum theory.72 About the time of the 1911 Solvay physics conference, Perrin shifted from Brownian motion to work on thin films, fluorescence, and photochemistry, partly to test the early quantum theory and especially to study individual atom-based fluctuations. [Pg.140]

The volatility of ammonia can be significantely affected by high concentrations of dissolved ions in the liquid phase. In sodium acetate the volatility increases by a factor of 1.9 at 25 wt % of salt. In sodium hydroxide the volatility is enhanced to a lesser degree with an increase of 1.25 at 22.5 wt % NaOH. Both electrolytes produce ions with only one electronic charge, but their effects on the volatility of ammonia are significantly different. Thus the effects of various ionic components must be studied individually in order to determine their effect on the volatility of NH3. [Pg.225]

A basic idea which arises out of the material presented in this volume is a very simple one Understanding and appreciating what heredity distinctively does for an individual may make it possible to cope environmentally with his difficulties. Without the appreciation of what heredity does, it is impossible to make intelligent use of the available environmental influences. Narrowing down the discussion specifically to the genetotrophic principle Unless we know about the distinctive nutritional needs imposed by one s heredity, we are in no position to meet these needs. We cannot know about these needs without studying individual differences in needs. We must be aware of the general facts of biochemical individuality, and in specific cases we must know the needs of the individuals whom we would help. [Pg.218]

Random error is the divergence, due to chance alone, of an observation on a sample from the true population value, leading to lack of precision in the measurement of an association. There are three major sources of random error individual/biological variation, sampling error, and measurement error. Random error can be minimized but can never be completely eliminated since only a sample of the population can be studied, individual variation always occurs, and no measurement is perfectly accurate. [Pg.55]

Since the first experiment on an intense synchrotron radiation source a little over ten years ago x-ray absorption spectroscopy (XAS) has become a routine technique for investigating the environment of metal ions in chemical and biochemical systems, and numerous studies have been reported in the literature. It is not the purpose of the present article to deal with these studies individually and the reader is referred to several reviews which have been published A few examples will be given to illustrate the potential of the technique, and to give some indication of the type of experiments which may be considered for studies in the future. [Pg.74]

Kosbash It is fly behaviour. If we did Paolo Sassone-Corsi s experiment and took out the Drosophila embryonic fibroblasts, we could study individual cell function. [Pg.152]

As a final introductory point, it should be noted that there is some confusion within the foundry industry, and its literature, regarding the specific rare earths being employed. Early work in this field was conducted using mischmetal. However, in many instances, only the cerium level was reported in these tests. The presence of the other rare earths was ignored. Even today, the elements most often mentioned are the first four lanthanides lanthanum, cerium, praseodymium and neodymium. That is not to say that the effects of the other elements in the series would not be similar to those of the first four or that they could not be utilized. Rather, their roles have not been studied individually. [Pg.27]

The overall observed retention of the enantiomers, and thus the elution order, is based on several kinetically and thermodynamically controlled parameters concerned with stereorecognition nonstereoselective interactions of all partners SO(R), SA(R S), and particularly of the [SO(RI-SA(KI] and [SO(K)-SA(Si] complexes with the achiral stationary phase, also play a role (Figure 21). Therefore the retention order may be reversed for a specific pair of enantiomers depending on whether a covalently bound CSP or a CMPA is applied, but using the same chiral molecule (part) as chiral selector. These general principles, shown schematically for a CLEC system, are further complicated by the complexity of the entire system, hence they are difficult to anticipate and each case must be studied individually. [Pg.219]

The Working Group made two observations relevant to the interpretation of all five cohort studies. Individual smoking habits had not been taken into account in the analysis of most of the reported studies however, the excesses of bladder cancer reported in the four positive studies were much too large to have been due to smoking alone. [Pg.281]

These limited data show that antipsychotics are clearly superior to placebo, when considering the studies individually or pooling them by a meta-analysis. [Pg.289]

Each of the aforementioned amplification strategies is of potential use in studying smaller, purer cell populations however, few if any of these techniques are amenable to the study of single cells, which may be necessary if analyzing cancer stem cells. In order to study individual cells, it is necessary to have a technique that is sensitive down to the... [Pg.9]

C.I. Direct Black 38, C.I. Direct Brown 95 and C.I. Direct Blue 6 were studied individually in the visible spectrum. A baseline was recorded using the phosphate reduction buffer in both cells. Subsequent additions of known amounts of dye and scanning allowed absorption maxima and molar absorptivity to be determined. Then 3 mg of sodium hydrosulfite was added to the dye-containing cell. The concentration of dye remaining after reduction was calculated using Beer s Law. The remaining dye varied from 0 to 6% of the original amount of dye added (Table I). Reduction was complete within 30 minutes. [Pg.25]

The quantitative determination of the concentrations of PBDEs in body tissues and fluids is important in determining the human bocfy burden of these chemicals. Increasing levels of PBDEs have been measured in blood and breast milk in temporal trend studies. Individuals A ho consumed fish had a somewhat higher concentration of total PBDEs in body fluids compared to individuals who ate less fish. [Pg.366]

For our study, individual samples of linear alpha olefins, containing from six to eleven carbons, were subjected to oxo synthesis to produce primary alcohols containing from 7 to 12 carbons. Analysis of the alcohols showed them to contain on the average 50% or more of the straight chain primary alcohols the remaining alcohols were also primary and consisted mainly of the 2-methyl isomers. To distinguish between 100% straight chain on the one hand, and 100% branched chain on the other, we call these new alcohols linear. ... [Pg.69]

With the FTIR spectroscopic method, these free radical reactions cannot be studied individually under completely isolated conditions since competing side reactions and also secondary reactions involving the molecular products must be taken into account. These mechanistic complications can be greatly reduced by appropriate selection of the method of free radical generation, as described in Section II.B. In general, to minimize the occurrence of secondary reactions, the conversion of the molecular reactants, and consequently the product yields, have to be kept as small as is permissible in order to obtain accurate concentration measurements. Also, the reaction time required for such chemical analysis must be kept as short as possible to minimize photochemical and heterogeneous losses of labile products. [Pg.79]


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See also in sourсe #XX -- [ Pg.38 ]




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