tetrazole-containing compounds have been the subject of much recent research because of theirpotential as high energy density materials (hedms). in this work, theoretical studies on the 1htetrazolylderivatives of tetrahedrane were done at the density functional theory (dft) method withthe 6-31g(d) basis set without any symmetrical restrictions in order to find the structural andenergetically pr...

Title of Dissertation: Probing the Dynamics of Ultra-Fast Condensed State Reactions in Energetic Materials Nicholas W. Piekiel, Doctor of Philosophy, 2012 Directed By: Michael R. Zachariah, Professor Department of Mechanical Engineering and Chemistry Energetic materials (EMs) are substances with a high amount of stored energy and the ability to release that energy at a rapid rate. Nanothermites...

Dow AgroSciences Australia Ltd has developed a genetically modified (GM) soybean line known as DAS-68416-4 that is tolerant to two herbicides, glufosinate ammonium and 2,4-dichlorophenoxyacetic acid (2,4-D). Tolerance to glufosinate ammonium is achieved through expression of the enzyme phosphinothricin acetyl transferase (PAT) encoded by the pat gene derived from the soil bacterium Streptomyces...

Suffix trees are the most frequently used data structures in algorithms on words. In this paper, we consider the depth of a compact suffix tree, also known as the PAT tree, under some simple probabilistic assumptions. For a biased memoryless source, we prove that the limiting distribution for the depth in a PAT tree is the same as the limiting distribution for the depth in a PATRICIA trie, even...

The synthesis and characterization of new 4-[(2-alkyl)-2H-tetrazol-5-yl]phenyl 4-alkyloxybenzoates (5a–i) and 5-{4-[(4-substituted)benzyloxy]phenyl}-2-alkyl-2H-tetrazoles (7a–e) are reported. The reported tetrazoles contain two alkyl chains (six to ten carbon atoms) except for 5h and 7e which have a chiral citronellyl group linked at the N-2 nitrogen atom of the tetrazole ring and 5i having a b...

Abstract A series of tetrazole-linked dibenzo[b,f][1,4]oxazepines is synthesized through a short sequence involving an Ugi tetrazole reaction. The intermediate undergoes potassium carbonate mediated SNAr cyclization, followed by oxidation to afford the target tricyclic heterocyclic scaffold. optimization, scope and limitations this two-step efficient methodology are investigated. 1000-member li...

Sterols are vital for cellular functions and eukaryotic development because of their essential role as membrane constituents. Sterol biosynthetic intermediates (SBIs) represent a potential reservoir of signaling molecules in mammals and fungi, but little is known about their functions in plants. SBIs are derived from the sterol C4-demethylation enzyme complex that is tethered to the membrane by...

The photochemistry and molecular structure of 1-phenyl-4-allyl-tetrazolone (PAT) was studied by FT-IR matrix isolation spectroscopy and DFT(B3LYP)/6-311++G(d,p) calculations. The spectrum of matrix-isolated PAT monomers agrees well with the sum spectrum of three conformers predicted theoretically. UV irradiation (lambda > 235 nm) of matrix-isolated PAT induces three types of photofragmentation:...

introdouction: mastoid pneumatization is often complete by the age of 5-years and may involve the temporo mandibular joint (tmj) region, including the pneumatized articular tubercle (pat) and pneumatized roof of the glenoid fossa (prgf). to prevent surgical complications, the diagnosis of these air cells is important. the aim of this study was to determine the prevalence and characteristics of ...