|
Showing 1 - 10 of
10 matches in All Departments
To protect their identity and values, Africans enslaved in
America transformed various familiar character types to create folk
heroes who offered models of behavior both recognizable to them as
African people and adaptable to their situation in America.Roberts
specifically examines the Afro-American trickster and the trickster
tale tradition, the conjurer as folk hero, the biblical heroic
tradition, and the badman as outlaw hero.
This book offers an overview of the status of the UK's clean-up
program and reviews international research programs including those
in Europe and the United States. Topics Include: geological
disposal concepts; ILW wasteforms; glasses and glass composite
materials; leaching; ceramic wasteforms; radiation effects; Pu
wasteforms; spent fuel; engineered barrier systems; mobilization,
migration and retention and performance assessment.
|
Chasing His Destiny
John W Roberts
|
R505
R474
Discovery Miles 4 740
Save R31 (6%)
|
Ships in 10 - 15 working days
|
Modern semiconductor devices are principally made using the element
silicon. In recent years, silicon carbide (SiC), with its wide
band-gap, high thermal conductivity, and radiation resistance, has
shown prospects as a semiconductor material for use in high
temperature and radiation environments such as jet engines and
satellites. A limiting factor in the performance of many SiC
semiconductor components is the presence of lattice defects formed
at oxide dielectric junctions during processing. Recent theoretical
work has used small quantum mechanical systems embedded in larger
molecular mechanics structures to attempt to better understand SiC
surfaces and bulk materials and their oxidation. This research uses
quantum mechanical models to calculate geometries and electronic
properties of small SimCnO molecular clusters of silicon carbide
oxides with 0 less than or equal to] m, n less than or equal to] 4.
Calculations are primarily done using Hartree-Fock and Density
Functional Theory (DFT) with the B3LYP exchange and correlation
functionals. Meuller-Plesset Second Order Perturbation (MP2),
Configuration Interaction (CI), Multi-Configurational
Self-Consistent Field (MCSCF), and Coupled Cluster (CC) are used on
the CSi2O molecule to confirm the accuracy of selected levels of
DFT. Molecular properties examined include ground state
multiplicity, vibrational modes and frequencies, and geometry for
both the neutral and anion, adiabatic and vertical electron
affinities, and thermodynamic heats of formation. Qualitative
predictions are made regarding the photoelectron spectrum
experimentalists may see. Finally, preferred geometries, functional
groups, and bonding locations are qualitatively determined. Later
research will be able to use these results to study the oxidation
of larger SiC structures and surfaces and their defects.
The anti-animal experiments group FAAN(Free All Animals Now) has
been fighting to close down the chemical company STEYN for over six
years but despite constant picketing and harassing its employees
has had no success. When they trick their way into STEYN'S premises
one of their youngest members falls to her death when trying to
spread a protest banner from the laboratory roof. Later when the
FAAN member who led the group into STEYN's premises is killed in a
hit and run accident the police begin a search for the killer which
leads them into the East London criminal world. Meanwhile one of
FAAN'S members, Miranda Woolston decides that much more drastic
action is needed against STEYN. She is a chemist, specialising in
the medicinal use of plants and has worked for several years in the
Amazonian jungle. She believes she has developed a non-lethal
version of the poison Curare and proposes that FAAN uses it against
STEYN employees to debilitate them.
|
|