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Short term

Short-term exposure. This is the maximum concentration to which workers can be exposed for a period of up to 15 minutes continuously without suffering from (a) intolerable irritation, (b) chronic or irreversible tissue change, or (c) narcosis of sufficient degree to increase accident proneness, impair self-rescue, or materially reduce efficiency, provided that no more than four excursions per day are permitted, with at least 60 minutes between exposure periods, and provided the daily time-weighted value is not exceeded. [Pg.260]

The purpose of chemical processes is not to make chemicals The purpose is to make money. However, the profit must he made as part of a sustainable industrial activity which retains the capacity of ecosystems to support industrial activity and life. This means that process waste must be taken to its practical and economic minimum. Relying on methods of waste treatment is usually not adequate, since waste treatment processes tend not so much to solve the waste problem but simply to move it from one place to another. Sustainable industrial activity also means that energy consumption must be taken to its practical and economic minimum. Chemical processes also must not present significant short-term or long-term hazards, either to the operating personnel or to the community. [Pg.399]

Summarizing, from a mathematical point of view, both forward and backward analysis lead to the insight that long term trajectory simulation should be avoided even with symplectic discretizations. Rather, in the spirit of multiple as opposed to single shooting (cf. Bulirsch [4, 18]), only short term trajectories should be used to obtain reliable information. [Pg.101]

Hence, as the second class of techniques, we discuss adaptive methods for accurate short-term integration (Sec. 4). For this class, it is the major requirement that the discretization allows for the stepsize to adapt to the classical motion and the coupling between the classical and the quantum mechanical subsystem. This means, that we are interested in discretization schemes which avoid stepsize restrictions due to the fast oscillations in the quantum part. We can meet this requirement by applying techniques recently developed for evaluating matrix exponentials iteratively [12]. This approach yields an adaptive Verlet-based exponential integrator for QCMD. [Pg.397]

For short term simulations, accuracy requirements on the discrete solution make sense and we advocate error controlling adaptive integrators. Moreover, we have to further subdivide our classification due to the observations in Sec. 2.2 ... [Pg.399]

Tests with animals have revealed that dioxin is one of the most toxic substances known Toward mice it IS about 2000 times more toxic than strychnine and about 150 000 times more toxic than sodium cyanide Fortunately however available evidence in dicates that humans are far more resistant to dioxin than are test animals and so far there have been no human fatalities directly attributable to dioxin The most prominent short term symptom seen so far has been a severe skin disorder known as chloracne Yet to be determined is the answer to the question of... [Pg.1010]

The short-term exposure of humans, animals, and plants to gaseous pollutants is more severe than that for pollutants in other matrices. Since the composition of atmospheric gases can show a substantial variation over a time, the continuous monitoring of atmospheric gases such as O3, CO, SO2, NH3, H2O2, and NO2 by in situ sampling is important. [Pg.196]

If a Tg value corresponding to a true second-order transition exists, it is a value lower than those based on short-term observations. The latter should then be regarded as approximations to the true value. [Pg.248]

Land purchases and many of the costs associated with faciUty development can be accompHshed with long-term loans of 15 to 30 years. Equipment such as pumps and tmcks are usually depreciated over a few years and are funded with shorter-term loans. Operating expenses for such items as feed, chemicals, fuel, utilities, salaries, taxes, and insurance may require periodic short-term loans to keep the business solvent. The projected income should be based on a reaUstic estimate of farmgate value of the product and an accurate assessment of anticipated production. Each business plan should project income and expenses projected over the term of all loans in order to demonstrate to the lending agency or venture capitaUst that there is a high probabiUty the investment will be repaid. [Pg.12]

The 2-cyanoacryhc esters have sharp, pungent odors and are lacrimators, even at very low concentrations. These esters can be irritating to the nose and throat at concentrations as low as 3 ppm eye irritation is observed at levels of 5 ppm (13). The TLV for methyl 2-cyanoacrylate is 2 ppm and the short-term exposure limit is 4 ppm (14). Good ventilation when using the adhesives is essential. [Pg.178]

North American HF production capacity has declined since the early 1980s and several smaller producers, such as Harshaw and Essex, have closed plants. Production is expected to continue to decline in the short term because of chlorofluorocarbon (CPC) cutbacks, but is expected to rebound later in the 1990s as replacement hydrochlorofluorocarbons are introduced to the marketplace. [Pg.198]

At least in the short term, European production is expected to be impacted by two trends the move away from planned economics in the East should lead to more rapid demand growth and the phaseout of CPCs, including, in Europe, aerosols (qv), should lead to overcapacity in the West. This excess capacity in western Europe could be used to supply the East. [Pg.198]

Molten ETFE polymers corrode most metals, and special corrosion-resistant alloys ate recommended for long-term processiag equipmeat short-term prototype mas are possible ia standard equipment. [Pg.369]

Short-term, 250-p.m-thick sample. AsTM method D257. [Pg.375]

Creep. The creep characteristic of plastic foams must be considered when they are used in stmctural appHcations. Creep is the change in dimensions of a material when it is maintained under a constant stress. Data on the deformation of polystyrene foam under various static loads have been compiled (158). There are two types of creep in this material short-term and long-term. Short-term creep exists in foams at all stress levels however, a threshold stress level exists below which there is no detectable long-term creep. The minimum load required to cause long-term creep in molded polystyrene foam varies with density ranging from 50 kPa (7.3 psi) for foam density 16 kg/m (1 lb /ft ) to 455 kPa (66 psi) at foam density 160 kg/m (10... [Pg.412]

The successflil appHcation of time—temperature superposition (159) for polystyrene foam is particularly significant in that it allows prediction of long-term behavior from short-term measurements. This is of interest in building and constmction appHcations. [Pg.412]

Natural gas production and transmission systems are complemented by underground storage systems. These systems provide the capabdity to respond to short-term gas demands which exceed the immediate production levels or transmission capabdities. They also provide an opportunity to sustain some production by refilling the storage areas when seasonal temperature variations lead to periods of reduced gas demand. In the United States in 1990, there were 397 storage pools having a combined capacity of 2.2 x 10 (1). [Pg.173]

The mechanism by which sucralfate accelerates healing of duodenal ulcers has not been determined. It does not have significant antisecretory, acid neutralizing activity or direct stimulation of ulcer healing. It is known that the mechanism is local rather than systemic. Binding of pepsin or bile salts may contribute to its effect. It is indicated for the short-term therapy of active duodenal ulcers and for maintenance at reduced dosage. [Pg.199]

The short-term or acute effects of the P-agonists may be different from chronic effects. Acute Hpolysis and glycogenolysis are not observed beyond the first day or two of treatment. Exact mechanisms of action on Hpid metaboHsm may differ among species. Chronic effects of the P-agonists reduce circulating insulin concentrations ST treatment causes an opposite change. Whereas residue levels may be of concern with adrninistration of several of the P-agonists, such is not the case for ST or GRE. [Pg.414]

Short-term (100 h) internal pressure creep mpture testsof small bore cylinders having diameter ratios of 3 to 4, made of a number of different refractory metals, have been investigated at temperatures in the range 900—1300°C (73). [Pg.86]

Guide for Short Term Exposures of the Public to Mir Pollutants, Guidefor Hydra ne, Monomethylhydra ne and 1,1 -Dimethylhydra ne, Committee on Toxicology of the National Academy of Science, National Research Council, Washington, D.C., Jan., 1975. [Pg.294]


See other pages where Short term is mentioned: [Pg.98]    [Pg.99]    [Pg.397]    [Pg.409]    [Pg.409]    [Pg.209]    [Pg.721]    [Pg.383]    [Pg.60]    [Pg.104]    [Pg.128]    [Pg.479]    [Pg.268]    [Pg.439]    [Pg.131]    [Pg.137]    [Pg.375]    [Pg.381]    [Pg.381]    [Pg.458]    [Pg.113]    [Pg.173]    [Pg.176]    [Pg.198]    [Pg.199]    [Pg.199]    [Pg.199]    [Pg.199]    [Pg.280]    [Pg.243]   
See also in sourсe #XX -- [ Pg.232 ]

See also in sourсe #XX -- [ Pg.43 ]

See also in sourсe #XX -- [ Pg.326 ]

See also in sourсe #XX -- [ Pg.369 , Pg.374 , Pg.415 , Pg.440 ]




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Biosensors short-term stability

Breaking strain, short term

Cancer bioassays short term tests

Carcinogenesis short term tests

Carcinogenicity studies short-term assay

Cohesive Soil Short-Term Cyclic Loading

Cohesive Soil Short-Term Static Loading

Creatine short-term

Damage short term

Death short-term risk

Detoxification short-term

Discounts/discounting short-term

Dopamine short term control

Environmental effects short-term behavior

Finance short term

In vitro and Other Short-Term Tests

Inhalants short-terms effects

Insomnia short-term

Limit values short term exposure

Limit, short term

Limit, short term administrative

Limit, short term apparatus

Limit, short term approach

Limit, short term change

Limit, short term devices

Limit, short term dust masks

Limit, short term duties

Limit, short term equipment

Limit, short term exposure control

Limit, short term general

Limit, short term health officer

Limit, short term hoods

Limit, short term hygiene

Limit, short term maintenance

Limit, short term materials

Limit, short term personnel protective

Limit, short term principles

Limit, short term process

Limit, short term protection

Limit, short term requirements

Limit, short term requirements, general

Limit, short term respirators

Limit, short term responsibility

Limit, short term self contained

Limit, short term skin protection

Limit, short term substitution

Limit, short term training

Limit, short term values, threshold

Limit, short term ventilation

Limit, short term work practices

Limiting Short-Term Exposure

Lipids short-term effects

Loading, short-term

Loans short-term

Mechanical properties short-term

Memory short-term, animal studies

Metabolic pathways short-term

Metribuzin short-term

Mineralization short-term

Models short-term impact

Noise short term

Nonlinear Short-Term Scheduling Model

Other Short-Term Indications

Packaging short-term

Plastic short-term behavior

Precautions for the Use of Short-Term Mutagenicity Assays

Presently available short-term toxicological tests

Priming short-term effects

Production environments Short-term operational environment

Psychosis short-term

Russia short term

SHORT TERM STRESS - STRAIN PROPERTIES

Safety short-term exposure limits

Short Term Exposure Limit

Short Term Temperature Stability

Short and Long Term Performance

Short and Long-Term Behavior

Short term Economic Recovery

Short term clinical results

Short term monitoring, field studies

Short term resistance changes

Short term speech analysis

Short term stability

Short term tests

Short term view

Short- and Long-Term Water Absorption

Short- and long-term behaviour

Short-Term Administration

Short-Term Barotropic Exchange

Short-Term Collecting Method

Short-Term Cycle

Short-Term Discounting Trade Promotions

Short-Term Exposure to Temperature

Short-Term Lay-Up

Short-Term Load Behavior

Short-Term Mechanical Testing

Short-Term Mixing Structures

Short-Term Model

Short-Term Peak Temperature Loads

Short-Term Studies

Short-Term Temperature Influence

Short-Term Testing of Plastics

Short-Term Tests for Genetic and Related Effects

Short-Term Toxicity Studies

Short-Term Treatment of Ocular Hypertension

Short-Term Wave Statistics

Short-range terms

Short-term Detector Tubes

Short-term End-user Storage of DMSO Stocks

Short-term Inhalation Limits

Short-term adverse effects/toxicity

Short-term application

Short-term assays

Short-term behavior

Short-term bench testing

Short-term bioaccumulation

Short-term bioassay

Short-term bonds

Short-term come

Short-term concentrations

Short-term concentrations measurements

Short-term constancy

Short-term debt instruments

Short-term deviations

Short-term discounting

Short-term drifts

Short-term effect

Short-term effect exposure

Short-term effects particle exposures

Short-term effects studies

Short-term exposure

Short-term exposure limit effects

Short-term exposure limits STEL)

Short-term fixation

Short-term fixed-income securities

Short-term fluctuations

Short-term heat-stress studies

Short-term horizon

Short-term hypnotics

Short-term implantation

Short-term improvements

Short-term in vitro tests

Short-term in vivo tests

Short-term institutional investors

Short-term intense radiation

Short-term interest rate

Short-term interest rate calls

Short-term interest rate options

Short-term lead poisoning

Short-term liabilities

Short-term loads

Short-term management

Short-term maturity

Short-term measurements

Short-term mechanical tests

Short-term memory

Short-term mutagenicity assays

Short-term obligations

Short-term performance

Short-term precision

Short-term prognosis after

Short-term prognosis after TIA

Short-term prognosis after TIA and minor stroke

Short-term prognosis after major stroke

Short-term prognosis after transient ischemic attack and minor stroke

Short-term protecting groups

Short-term proton pump inhibitor

Short-term public emergency guidance levels

Short-term public emergency guidance levels SPEGLs)

Short-term residential

Short-term risk-free rate

Short-term sales planning

Short-term scheduling

Short-term segment

Short-term shearing

Short-term stability analysis

Short-term strategy

Short-term stress

Short-term studies and conclusions

Short-term studies of toxicity

Short-term synaptic depression

Short-term test application

Short-term test carcinogens

Short-term test for carcinogenicity

Short-term test methods

Short-term test mutagens

Short-term thinking

Short-term toxicity

Short-term toxicological tests

Short-term values

Short-term variations

Short-term voltage limitation

Short-term whole-body radiation exposure

Sleep deprivation short-term effects

Storage short-term

Strength and deformability under short-term static load

Testing short-term

The Binomial Tree of Short-Term Interest Rates

The application of short-term tests to paper and board

Thyroid hormones short-term effect

Toxicity measurements short-term exposure limit

Toxicology short-term tests

Tritium as a Short-Term Age Indicator

Water, corrosion short-term

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