PRC

Kent PRC, Flood R Q, Williamson A J, Needs R J, Foulkes W M C and Ra]agopal G 1999 Finite-size errors in quantum many-body simulations of extended systems Phys. Rev. B 59 1917-29... 

For the sample search on aquatic toxicity of atrazine, 1459 results were found. An excerpt on the daphnia acute aquatic toxicity tests (EC50. LC.50) is prc.scnted in Figure 5-33. 

Orengo C A, T P Flores W R Taylor and J M Thornton 1993. Identification and Oassificalion of Prc Fold Families. Protein Engineering 6 485-500. 

The derivation of a QSAR equation involves a number of distinct stages. First, it is obviousl necessary to synthesise the compormds and determine their biological activities. Whe planning which compormds to synthesise, it is important to cover the range of propertie that may affect the activity. This means applying the data-checking and -manipulation prc cedures discussed earlier. For example, it would be unwise to make a series of coinpound with almost identical partition coefficients if this is believed to be an important property. 

Chemistry of Acrylamide, bulletin PRC 109, Process Chemicals Department, Ameiican Cyanamid Co., Wayne, N.J., 1969. 

Urea Process. In a further modification of the fundamental Raschig process, urea (qv) can be used in place of ammonia as the nitrogen source (114—116). This process has been operated commercially. Its principal advantage is low investment because the equipment is relatively simple. For low production levels, this process could be the most economical one. With the rapid growth in hydrazine production and increasing plant size, the urea process has lost importance, although it is reportedly being used, for example, in the People s RepubHc of China (PRC). 

The estimated world production capacity for hydrazine solutions is 44,100 t on a N2H4 basis (Table 6). About 60% is made by the hypochlorite—ketazine process, 25% by the peroxide—ketazine route, and the remainder by the Raschig and urea processes. In addition there is anhydrous hydrazine capacity for propellant appHcations. In the United States, one plant dedicated to fuels production (Olin Corp., Raschig process), has a nominal capacity of 3200 t. This facihty also produces the two other hydrazine fuels, monomethyUiydrazine and unsymmetrical dimethyUiydrazine. Other hydrazine fuels capacity includes AH in the PRC, Japan, and Russia MMH in France and Japan and UDMH in France, Russia, and the PRC. 

Dipartimento di Chimica and Centro di Eccellenza TIRES - Universitd degli Studi di Bari 4, via Orabona 70126 - Bari (Italy) torsi chimica.uniba.it -University of Texas at Austin - PRC/MER - Austin, Texas (USA)... 

Manipulating flow and controlling prcs.surc by varying the impeller diameter conserve.s kilowatts of energy, and this is the third affinity law in this group. A pump consuming 10 BHP with a 10 inch impeller, would only consume 7.3 horses with a 9 inch impeller. 

DPSE, like all subsequent Ontario Hydro PSAs, used the SETS code consequently it is constructed entirely of fault trees, although simple event trees were drawn to describe the accident sequences which were then redone as high-level fault trees for ten Fuel Damage Categories (ITX s) and five Plant Release Categories (PRCs) into which the system-level fault trees were merged to get the results in Table 11.2-1. 

Mulvihill, R. J. 1966, A Probabilistic Methodology for the Safety Analysis of Nucleiir Power Reactors, USAEC report PRC-R-657, February. 

Condition 1 Neffntive prc. s.Aure isolation room strategy... 

Prc sure Pressure Relief or Safety Valve Pressure Safety Valve ... 

Mth quinine in cinchona bark), is now prc]5.a> cd fmin anilmc. The aniline, in pioccss of oxidation to quinone, -ippeais to jiass throug h the following intermediate stag es. 

Before tlie 1970s, there was little legislation regarding tlie prevention of air and water pollution. Although some of the early laws approached the issue of pollution prc cntion. none of tliis legislation provided for emergency plamiing and response in the event of an accident. 

A facility that has e.vpcricnccd one or more spill events within 12 months before the effective date must prepare a written description of each spill. corrccti C action taken, and plans for prc cnting recurrences... 

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