the degradation of crude oil under a no-control and dispersant-control setting was evaluated using loss of biological activity test, microbial population growth and measurements of optical transmittance of test media. comparison of the toxicity of crude oil under the no-control setting to crude oil-dispersant mixture revealed that the mixture was about 2 times more toxic than the crude oil unde...

We used an established seagrass monitoring programme to examine the short and longer-term impacts of an oil spill event on intertidal seagrass meadows. Results for potentially impacted seagrass areas were compared with existing monitoring data and with control seagrass meadows located outside of the oil spill area. Seagrass meadows were not significantly affected by the oil spill. Declines in s...

Documentation of the near- and long-term effects of the Deepwater Horizon (DWH) oil spill, one of the largest environmental disasters in US history, is still ongoing. We used a novel before-after-control-impact analysis to test the hypothesis that average body size of intertidal populations of the eastern oyster (Crassostrea virginica) inhabiting impacted areas in Louisiana decreased due to inc...

This chapter gives credence to the introduction of optimal control theory into oil spill modeling and develops an optimization process that will aid in the effective decisionmaking in marine oil spill management. The purpose of the optimal control theory is to determine the control policy that will optimize (maximize or minimize) a specific per‐ formance criterion, subject to the constraints im...

The primary goal of the register allocation phase in a compiler is to minimize register spills to memory. Spill decisions by the allocator are often made based on the costs of spilling a virtual register and, therefore, on an assumed placement of spill instructions. However, because most allocators make these decisions incrementally, placement opportunities can change as allocation proceeds, ca...

By combining news coverage and survey data from the BP oil spill of 2010, this study demonstrates how the media played an important role in connecting the disaster to President Obama. Rather than criticizing Obama from the outset, the spill reporting escalated from a period of event-based, factual coverage to a highly politicized phase of governmental blame attribution. We utilize a natural exp...

PTB Reports,2022,8,3,92-98.DOI:10.5530/PTB.2022.8.12Published:December 2022Type:Review ArticleAuthors:Yousef Ahmed Alomi, Anhar Alyousef, Mohammed Mominul Islam, Abdulrahman Nabeel Yousif, Yousif Sharaf, Eman Mohamed Hasan Alaali, Maha Hussein Almadany, and Hamidah Qasim Ali Abushomi Author(s) affiliations:Dr. Yousef Alomi*, BSc. Pharm, MSc, Clin BCPS, BCNSP, DiBA, CDE, Critical Care Clinical P...

Finite dimensional adaptive H∞ control for distributed parameter systems of hyperbolic type preceded by input nonlinearities such as dead-zone or backlash, is considered in this paper. Distributed parameter systems are infinite dimensional processes, but the proposed control scheme is constructed from finite dimensional controllers. An adaptive inverse model is introduced to estimate and compen...

In view of the fact that oil spill remote sensing could only generate the oil slick information at a specific time and that traditional oil spill simulation models were not designed to deal with dynamic conditions, a dynamic data-driven application system (DDDAS) was introduced. The DDDAS entails both the ability to incorporate additional data into an executing application and, in reverse, the ...

The Deepwater Horizon oil spill impacted Louisiana's coastal estuaries physically, chemically, and biologically. To better understand the ecological consequences of this oil spill on Louisiana estuaries, we compared the abundance and size of two Gulf shrimp species (Farfantepeneus aztecus and Litopeneus setiferus) in heavily affected and relatively unaffected estuaries, before and after the oil...