Big Chemical Encyclopedia

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

Articles Figures Tables About

State responsibility

Despite EPA s urging and guidance, state response was disappointing. A few states adopted large numbers of numeric toxic pohutant criteria, primarily for the protection of aquatic life. Most other states adopted few or no water-quality criteria for priority toxic pohutants. Some rehed on free from toxicity criteria and so-called acLion levels for toxic pollutants or occasionally calculated site-specific criteria. Few states addressed the protection of human health by adopting numeric human health criteria. [Pg.2160]

When r t) is a unit step, and riit) is zero, the final value theorem (equation (3.10)) gives the steady-state response... [Pg.82]

The denominator is now in the standard second-order system form of equation (3.42). The steady-state response may be obtained using the final value theorem given in equation (3.10). [Pg.84]

The root locus method provides a very powerful tool for control system design. The objective is to shape the loci so that closed-loop poles can be placed in the. v-plane at positions that produce a transient response that meets a given performance specification. It should be noted that a root locus diagram does not provide information relating to steady-state response, so that steady-state errors may go undetected, unless checked by other means, i.e. time response. [Pg.132]

The steady-state response of a linear system will be... [Pg.145]

Job descriptions for each role, stating responsibilities, authority, and accountability... [Pg.120]

The Hazardous Materials Transportation Act (HMTA) defines transportation releases to be those that occur during loading, unloading, transportation or temporary storage of hazardous materials or waste. Releases that meet certain criteria (see Table 64.1) should be reported to the National Response Center (NRC) and the state response center. Most states also require calls to the local police or response agencies (often by calling 911). Follow-up writ-... [Pg.1079]

Another potential complication can occur if the responsiveness of the receptor system changes temporally. This can happen if the receptor (or host system, or both) demonstrates desensitization (tachyphylaxis) to drug stimulation (see Chapter 2). There are numerous systems where constant stimulation with a drug does not lead to a constant steady-state response. Rather, a fade of the response occurs. This can be due to depletion of a cofactor in the system producing the cellular response or a conformational change in the receptor protein. Such phenomena protect against overactive stimulation of... [Pg.87]

Another electro-oxidation example catalyzed by bimetallic nanoparticles was reported by D Souza and Sam-path [206]. They prepared Pd-core/Pt-shell bimetallic nanoparticles in a single step in the form of sols, gels, and monoliths, using organically modified silicates, and demonstrated electrocatalysis of ascorbic acid oxidation. Steady-state response of Pd/Pt bimetallic nanoparticles-modified glassy-carbon electrode for ascorbic acid oxidation was rather fast, of the order of a few tens of seconds, and the linearity was observed between the electric current and the concentration of ascorbic acid. [Pg.68]

Note that for k = 0, with zero reaction, the final steady-state response is given by Co, and the response is identical to that of Case A. [Pg.69]

For completeness it should be mentioned that some of the theoretical conclusions for SECMIT are analogous to earlier treatments for the transient and steady-state response for a membrane-covered inlaid disk UME, which was investigated for the development of microscale Clark oxygen sensors [62-65]. An analytical solution for the steady-state diffusion-limited problem has also been proposed [66,67]. [Pg.307]

Although it was not possible to distinguish between the specificity of oxygen states responsible for methoxy and formate formation, they were to be associated with isolated oxygen adatoms and oxygen states present at the periphery of the (2 x 1)0 islands. [Pg.92]

Thus the efficiency of the reaction depends only upon the rate of reaction relative to the rates of all processes leading to deactivation of the excited state responsible for the reaction. The same is true for all other processes. Therefore an expression for the quantum yield for any particular process can be written down without going through the above kinetics ... [Pg.12]

A similar dissection of the excited states responsible for reaction by quenching has been carried out on cis- and /ra 5-8-methyl-1 -hydrindanone and cis- and frans-9-methyl-l-decalone with the purpose of determining the... [Pg.78]

Zimmerman and co-workers were also able to obtain some information regarding the multiplicities of the excited states responsible for the initial /9-cleavage through quenching and sensitization studies. It was found that both trans-to-cis and cis-to-trans isomerizations could be sensitized by chlorobenzene under conditions where the latter absorbed over 95% of the light. The same product ratio was obtained under these conditions as in the direct irradiation of the ketones. With 1,3-cyclohexadiene or 2,5-dimethyl-2,4-hexadiene as quenchers nearly 90% of the reaction of the trans isomer could be quenched. Again the ratio of the quenched reaction products was the same as in the unquenched reaction. The reaction of the cis isomer, on the other hand, could not be quenched by 1,3-cyclohexadiene or 2,5-dimethyl-2,4-... [Pg.94]

There are some biases concerning the stated response to WTP questions. Some responses might be from yes-sayers to please the interviewer. Others might give protest zeros responses, if the respondent disagree with the conducted scenario. While yet others desire a warm-glow since the respondent has a moral satisfaction from the act [25]. [Pg.122]

Physostigmine reverses propofol-induced unconsciousness and attenuation of the auditory steady state response and bispectral index in human volunteers. Anesthesiology 93, 708-17. [Pg.140]

A sinusoidal input. The frequency of the sinusoidal variation is changed and the steady-state response of the effluent at different input frequencies is determined, thus generating a frequency-response diagram for the system. [Pg.390]

Given the information above, the question remains as to the nature of the monolayer states responsible for the stereo-differentiation of surface properties in racemic and enantiomeric films. Although associations in the crystalline phases are clearly differentiated by stereochemical packing, and therefore reflected in the thermodynamic and physical properties of the crystals, there is no indication that the same differentiations occur in a highly ordered, two-dimensional array of molecules on a water surface. However, it will be seen below (pp. 107-127) that conformational forces that are readily apparent in X-ray and molecular models for several diastereomeric surfactants provide a solid basis for interpreting their monolayer behavior. [Pg.83]

A clear division of Paterno-Biichi reactions into several distinct categories is possible on the basis of the type of reacting carbonyl compound (alkyl or aromatic), the excited state responsible for reaction (n—71 or Ti—n, singlet or triplet), and the type of olefin (electron deficient or electron-rich). Some examples of these reactions are given in Eqs. 7—11, where only the oxetane products are shown. [Pg.150]


See other pages where State responsibility is mentioned: [Pg.41]    [Pg.565]    [Pg.735]    [Pg.35]    [Pg.565]    [Pg.1078]    [Pg.314]    [Pg.117]    [Pg.131]    [Pg.664]    [Pg.91]    [Pg.526]    [Pg.207]    [Pg.183]    [Pg.170]    [Pg.783]    [Pg.124]    [Pg.73]    [Pg.149]    [Pg.102]    [Pg.110]    [Pg.365]    [Pg.508]    [Pg.568]    [Pg.539]    [Pg.589]    [Pg.145]    [Pg.207]    [Pg.175]   
See also in sourсe #XX -- [ Pg.393 ]




SEARCH



© 2024 chempedia.info