Voices from the Texas Pineywoods of El Camino Real de los Tejas: Sabine, San Augustine, and Nacogdoches Counties

The Voices from the Texas Pineywoods of El Camino Real de los Tejas: Sabine, San Augustine, and Nacogdoches Counties provides information for future research in the telling of the story of life ways in three counties of the Texas Pineywoods area of the east-west transportation corridor designated as El Camino Real de los Tejas National Historic Trail

Comparing Banana Leaf Dressing and Vaseline Gauze Dressing for Split-Thickness Skin Graft Donor Sites in a Ugandan Hospital

Introduction: This study compared the effectiveness of banana leaf dressing (BLD) with the commonly used Vaseline gauze dressing (VGD) on split-thickness skin graft (SSG) donor sites. VGD is not completely nonadherent and is associated with pain on removal. BLD is smooth, non-adherent, pain-free and available. Methods: In this prospective study, consecutive patients were dressed with either BLD or VGD. Ease of applying and removing the dressings was scored. Pain scores were taken on postoperative days 3, 5, 7, 9 and 10. On day 10, the dressing was changed, epithelialization recorded and a swab taken for microbial culture. Average cost of each dressing was calculated. Results: There was no significant difference between postoperative pain scores with either dressing (p=0.992). BLD patients had less pain on  dressing change (p=0.006). Both dressings were easy to apply; BLD was easier to remove (p=0.000). Wounds with BLD re-epithelialized faster (p=0.0158). 40% of wounds grew no organism on microbial culture, 25% grew Staphylococcus aureus and 35% grew unusual organisms (p=0.482). VGD was 4 times more expensive than BLD (p=0.000). Conclusion: Banana leaf dressing is effective and highly recommended for dressing SSG donor sites.Keywords: Split-thickness skin graft, Donor sites, Banana leaf dressing, Vaseline gauze dressin

Seven Hundred Years of Keyboard Music: A Faculty Recital

This is the program for the faculty recital Seven Hundred Years of Keyboard Music featuring pianists Dr. Cai Lei, Dr. Russell Hodges, Dr. George Keck, and Dr. Ouida Keck. Dr. George Keck presented commentary between performances. This recital took place on November 16, 2004, in the W. Francis McBeth Recital Hall

Taming Ambident Triazole Anions: Regioselective Ion-Pairing Catalyzes Direct N-Alkylation with Atypical Regioselectivity

Controlling the regioselectivity of ambident nucleophiles toward alkylating agents is a fundamental problem in heterocyclic chemistry. Unsubstituted triazoles are particularly challenging, often requiring inefficient stepwise protection–deprotection strategies and prefunctionalization protocols. Herein we report on the alkylation of archetypal ambident 1,2,4-triazole, 1,2,3-triazole, and their anions, analyzed by in situ ¹H/¹⁹F NMR, kinetic modeling, diffusion-ordered NMR spectroscopy, X-ray crystallography, highly correlated coupled-cluster computations [CCSD­(T)-F12, DF-LCCSD­(T)-F12, DLPNO-CCSD­(T)], and Marcus theory. The resulting mechanistic insights allow design of an organocatalytic methodology for ambident control in the <i>direct</i> N-alkylation of unsubstituted triazole anions. Amidinium and guanidinium receptors are shown to act as strongly coordinating phase-transfer organocatalysts, shuttling triazolate anions into solution. The intimate ion pairs formed in solution retain the reactivity of liberated triazole anions but, by virtue of highly regioselective ion pairing, exhibit alkylation selectivities that are completely inverted (1,2,4-triazole) or substantially enhanced (1,2,3-triazole) compared to the parent anions. The methodology allows direct access to 4-alkyl-1,2,4-triazoles (<i>rr</i> up to 94:6) and 1-alkyl-1,2,3-triazoles (<i>rr</i> up to 99:1) in one step. Regioselective ion pairing acts in effect as a noncovalent in situ protection mechanism, a concept that may have broader application in the control of ambident systems