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PNEC values can be used in conjunction with predicted environmental concentration values to calculate a risk characterization ratio (RCR), also called a Risk Quotient (RQ). RCR is equal to the PEC divided by the PNEC for a specific chemical and is a deterministic approach to estimating environmental risk at local or regional scales. [13]
pec .org .pk. The Pakistan Engineering Council ( Urdu: پاکستان انجینئرنگ کونسل; acronym: PEC) is a professional body for accreditation of engineering education and regulation of engineering profession in Pakistan. [2] It was established on 10 January 1976 by the Parliament under the PEC Act, 1976. [3] [4] The council ...
Pentachlorophenol ( PCP) is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names. [5] It can be found as pure PCP, or as the sodium salt of PCP, the latter of which dissolves easily in water. It can be biodegraded by some bacteria, including Sphingobium ...
The personal consumption expenditure ( PCE) measure is the component statistic for consumption in gross domestic product (GDP) collected by the United States Bureau of Economic Analysis (BEA). It consists of the actual and imputed expenditures of households and includes data pertaining to durable and non-durable goods and services.
Pneumocystis. pneumonia. co-trimoxazole, [2] steroids, pentamidine, trimetrexate, dapsone, atovaquone, primaquine, pafuramidine maleate and clindamycin. Pneumocystis pneumonia ( PCP ), also known as Pneumocystis jirovecii pneumonia ( PJP ), is a form of pneumonia that is caused by the yeast-like fungus Pneumocystis jirovecii.
Successor. PDP-4. The PDP-1 ( Programmed Data Processor-1) is the first computer in Digital Equipment Corporation 's PDP series and was first produced in 1959. It is famous for being the most important computer in the creation of hacker culture at the Massachusetts Institute of Technology, Bolt, Beranek and Newman and elsewhere. [2]
The PCP theorem is the cornerstone of the theory of computational hardness of approximation, which investigates the inherent difficulty in designing efficient approximation algorithms for various optimization problems. It has been described by Ingo Wegener as "the most important result in complexity theory since Cook's theorem " [1] and by Oded ...
Personal contract purchase ( PCP ), often referred to as a personal contract plan, is a form of hire purchase vehicle finance for individual purchasers, similar to both personal contract hire and a traditional hire purchase (buying on installments). Unlike a traditional hire purchase, where the customer repays the total debt in equal monthly ...