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Now showing items 3281-3290 of 3388
An assessment of middle grades preservice teachers' mathematics knowledge for teaching
(2009-06-02)
The overall purpose of this concurrent mixed methods study was to develop an
online performance assessment using content questions taken from a reputable seventh and
eighth grade standardized assessment that effectively ...
Dynamic fluorescence imaging with molecular agents for cancer detection
(2009-05-15)
Non-invasive dynamic optical imaging of small animals requires the
development of a novel fluorescence imaging modality. Herein, fluorescence imaging is
demonstrated with sub-second camera integration times using agents ...
Molecular systematics and phylogeography of the dusky dolphin (Lagenorhynchus obscurus) derived from nuclear and mitochondrial loci
(Texas A&M University, 2006-04-12)
This study presents evidence from mitochondrial and nuclear loci that there is
genetic divergence among and within geographic populations of Lagenorhynchus
obscurus. The effect of seasonal variation on the genetic structure ...
Topics in two-dimensional systems with spin-orbit interaction
(2009-05-15)
This dissertation focuses on the study of spin-dependent transport in systems
with strong spin-orbit coupling within their band structure. In particular we focus
on the anomalous Hall effect, the spin Hall effect, and the ...
Advances in diapriid (Hymenoptera: diapriidae) systematics, with contributions to cybertaxonomy and the analysis of rRNA sequence data
(2009-05-15)
Diapriids (Hymenoptera: Diapriidae) are small parasitic wasps. Though found
throughout the world they are relatively unknown. A framework for advancing diapriid
systematics is developed by introducing a new web-based ...
Magnetic field-induced phase transformation and variant reorientation in Ni2MnGa and NiMnCoIn magnetic shape memory alloys
(2009-05-15)
The purpose of this work is to reveal the governing mechanisms responsible for the magnetic field-induced i) martensite reorientation in Ni2MnGa single crystals, ii) stress-assisted phase transformation in Ni2MnGa single ...
High accuracy p-rho-t measurements up to 200 MPa between 200 K and 500 K using a compact single sinker magnetic suspension densimeter for pure and natural gas like mixtures
(2009-06-02)
Highly accurate density data is required for engineering calculations to make
property estimations in natural gas custody transfer through pipelines. It is also essential
to have accurate pressure-volume-temperature (PVT) ...
The evolution of LOL, the secondary metabolite gene cluster for insecticidal loline alkaloids in fungal endophytes of grasses.
(2009-05-15)
LOL is a novel secondary metabolite gene cluster associated with the production of loline alkaloids (saturated 1-aminopyrrolizidine alkaloids with an oxygen bridge) exclusively in closely related grass-endophyte species ...
Stable carbon isotope ratio of polycyclic aromatic hydrocarbons (PAHs) in the environment: validation of isolation and stable carbon isotope analysis methods
(Texas A&M University, 2004-11-15)
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous, toxic contaminants that are released to the environment from various petrogenic and pyrogenic sources. In an effort to more clearly identify and trace sources of PAHs ...
Longshore sediment transport rate calculated incorporating wave orbital velocity fluctuations
(Texas A&M University, 2006-10-30)
Laboratory experiments were performed to study and improve longshore sediment
transport rate predictions. Measured total longshore transport in the laboratory was
approximately three times greater for plunging breakers ...