The ISCIP Analyst, Volume V, Issue 17

This repository item contains a single issue of The ISCIP Analyst, an analytical review journal published from 1996 to 2010 by the Boston University Institute for the Study of Conflict, Ideology, and Policy

Carbon sequestration monitoring with acoustic double-difference waveform inversion: A case study on SACROC walkaway VSP data

Geological carbon sequestration involves large‐scale injection of carbon dioxide into underground geologic formations and is considered as a potential approach for mitigating global warming. Changes in reservoir properties resulting from the CO2 injection and migration can be characterized using waveform inversions of time‐lapse seismic data. The conventional approach for analysis using waveform tomography is to take the difference of the images obtained using baseline and subsequent time‐lapse datasets that are inverted independently. By contrast, double‐difference waveform inversion uses time‐lapse seismic datasets to jointly invert for reservoir changes. We apply conventional and double difference methods to a field time‐lapse walkaway VSP data set acquired in 2008 and 2009 for monitoring CO2 injection at an enhanced oil recovery field at SACROC, Texas. The double‐difference waveform inversion gives a cleaner and more easily interpreted image of reservoir changes, as compared to that obtained with the conventional scheme. Our results from the applicatoin of acoustic double‐difference waveform tomography shows some zones with decreased P‐wave velocity within the reservoir due to CO2 injection and migration

The Chronicle [May 26, 1961]

The Chronicle, May 26, 1961https://repository.stcloudstate.edu/chron/2213/thumbnail.jp

RENEWABLE ENERGY UTILIZATION FEASIBILITY FOR AGRICULTURAL COMPANY – GEORGIA CASE

There is no doubt that fossil fuels are expensive energy resources. Their use also leads to the environmental problems. Although there is a tendency of increase in renewable energy capacity, its share in global final energy consumption is relatively low. This paper aims to increase awareness of renewable energy role in corporation value creation. The research studies the potential of the use of agricultural biomass residues available for the company and evaluates several investment projects using the example of Geoagro ltd, and assesses their impact on company’s value. The paper also studies the feasibility of use of alternative renewable energies such as biomass and solar energy for company needs and finally assesses the profitability of the two. Regarding the methodology, the paper uses the standard financial valuation techniques such as Net Present Value and Internal Rate of Return in order to compare alternative investment projects. The results showed that the direct sell of biomass – hazelnut shells creates the highest value. While comparing the profitability of using alternative energies, it was showed that the best option is to eliminate natural gas use and switch to biomass fuel

Network Coding on Heterogeneous Multi-Core Processors for Wireless Sensor Networks

While network coding is well known for its efficiency and usefulness in wireless sensor networks, the excessive costs associated with decoding computation and complexity still hinder its adoption into practical use. On the other hand, high-performance microprocessors with heterogeneous multi-cores would be used as processing nodes of the wireless sensor networks in the near future. To this end, this paper introduces an efficient network coding algorithm developed for the heterogenous multi-core processors. The proposed idea is fully tested on one of the currently available heterogeneous multi-core processors referred to as the Cell Broadband Engine

Facile extraction of chitin and chitosan from shrimp shell

In this study, the chitin and chitosan were extracted from shrimp shell through two-steps acid and alkaline treatment. The shrimp shell was deproteinized by 1 Mof sodium hydroxide and demineralised by 1%, 2%, 3%, 4% and 5% of hydrochloric acid, respectively. The produced chitin was characterized by FTIR and FESEM. FTIR depicted that the chitin extracted from shrimp shell was in a-chitin isomorph. The surface morphology of chitin was found to increase with an increase in acid concentration. The chitosan film with rod-like micro-structure was produced when dissolved in 2% of acetic acid. It was shown that chitosan with 65% of DD was successfully produced using this chemical route

FTC Rulemaking Through Negotiation

The Federal Trade Commission, along with other administrative agencies, has been especially affected by the current emphasis on deregulation. Some proponents of the free market system view the Commission as an unnecessary and costly impediment to market functioning. In this article, Professor Koch and Ms. Martin review past FTC regulatory efforts in light of the FTC\u27s mandate: to maintain an efficient, competitive free market Although the FTC has deviated from its market maintenance goal, this deviation should not serve as a basis for constricting Commission rulemaking activity. Rather, the authors demonstrate that past Commission practices illustrate the need for an informal rulemaking procedure that is sensitive to the needs of both consumers and industry

Mineral processing techniques for recycling investment casting shell

The Albany Research Center of the U.S. Department of Energy used materials characterization and minerals beneficiation methods to separate and beneficially modify spent investment-mold components to identify recycling opportunities and minimize environmentally sensitive wastes. The physical and chemical characteristics of the shell materials were determined and used to guide bench-scale research to separate reusable components by mineral-beneficiation techniques. Successfully concentrated shell materials were evaluated for possible use in new markets