Probabilistic Approach to Estimation of Urban Storm-Water TMDLs: Regulated Catchment

The present work is concerned with the development of a set of tools for the incorporation of various control measures—best management practices into an analytical probabilistic modeling approach for urban storm-water total maximum daily load (TMDL) estimation. Control measures are divided into two major groups—upstream and downstream, each requiring application of separate modeling principles elaborated in this paper. Applying Monte Carlo simulation to the developed set of expressions allows modeling the “end-of-pipe” parameters of urban storm-water discharges (runoff volume, discharge rate, and pollutant load) on an event average basis, as well as the stream parameters downstream of a storm-water discharge outlet. Model application is illustrated for a catchment regulated with an extended detention dry pond. Representative model results are presented, and a range of potential model applications is discussed. The capability to model the behavior of an urban storm-water system with the application of various control measures is the key precondition for the design of an optimal configuration of a water-protective strategy.     

Experimental and theoretical study of associated petroleum gas processing into normalized gas by soft steam reforming

The article presents the results of experimental investigation and mathematical modeling of a new technology for converting associated petroleum gas to a normalized combustible gas that can be used in gas turbine and gas reciprocator power plants or, after removing part of the СО₂, can be pipelined. The essence of the new technology is that the C2+ hydrocarbons contained in associated petroleum gas are converted by soft steam reforming into a gaseous fuel that consists mainly of methane and contains carbon dioxide and a small amount of hydrogen. This process increases the volume of the gas mixture and normalizes its heating value and Wobbe index to the standard characteristics of commercial natural gas (purified from СО₂). The soft steam reforming technology has been tested on laboratory, pilot, and pre-commercial scales. A mathematical model has been developed for the process. A numerical analysis based on this model has demonstrated that, using this technology, it is possible to process associated petroleum gases varying widely in methane homologue concentrations in one tubular catalytic reactor.     

Use of proteolytic enzymes and ectericide in surgical treatment of suppuration

The use of proteolytic enzymes and ectericide in treatment of patients with suppurative processes yielded positive results. The duration of the treatment and terms of patients incapacity are shortened.     

Solution of inverse problems of the mechanics of reactive media

The general inverse problem of heat and mass transfer in a porous reactive material is reduced to a set of particular problems by using splitting of the problem according to chemical and physical processes. A brief exposition is given of the methods for solving these particular inverse problems.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 3, pp. 459–464, March, 1989.