Now showing items 41-60 of 196

  • Carbon-carbon bond formation via epititanation and aromatization of acetylenes 

    Clayton, Callie J.; Nguyen, Minh D.; Gitua, John N. (2007-05-31)
    The dibutyltitanium(IV) diisopropoxide, Bu2Ti(OPri)2, reacts with acetylenes, RCºCR (1), where R = Ph, Pr, to undergo in high yield epimetalation with Ti(OPri)2 by transfer. Our on-going research has demonstrated the ...
  • Assessing gene expression by real-time polymerase chain reaction 

    Dang, Ngoc; Tran, Paul; Colton, Ben; Torry, Ronald J. (2007-05-31)
    End-point Polymerase Chain Reaction (PCR) is a highly sensitive technique that can be used to assess gene expression in limited tissue/cell samples. However, accurately quantifying gene expression with this method is tedious ...
  • Analysis of mRNA changes as a function of learning and methamphetamine exposure 

    Kostelc, Kate; Sleister, Heidi; Klipec, William D. (2007-05-31)
    Methamphetamine is a powerful, addictive drug that is of great concern in Iowa and the Midwest. Powerful methamphetamine abuse is correlated with depression and learning disabilities (e.g. attention deficit disorder). ...
  • Circular polarization in PKS 1519-273 

    Bennett, Wendy (2007-05-31)
    The intra-day variable BL Lac PKS 1519-273 exhibits variations at centimeter wavelengths in total intensity, linear polarization, and circular polarization. The variability is caused by scintillation due to the interstellar ...
  • Comparing venous to arterial base deficit during hemorrhage and resuscitation 

    Prakash, Shawn; Singh, Sid; Stoeker, Laura; Casmaer, Carter; Wilcox, Jenna; Butler, Paul; Hopkins, James; Devey, Jennifer; Henderson, LaRhee; Buising, Charisse; Wall, Piper (2007-05-31)
    Arterial base deficit is used in assessing trauma patient oxygen debt, life saving intervention requirements, resuscitation adequacy, and mortality risk. Venous blood samples are simpler and less painful to obtain than ...
  • Hierarchical routing using k-SPR 

    Nesheim, Skyler; Smith, Matt (2007-05-31)
    The goal of our research is to create an improved routing protocol for Ad-Hoc Wireless networking. We began our research by studying a protocol developed by two Drake students, Tiffany Meredith and Jennifer Ehrlich, which ...
  • Inability to easily predict individual deaths in a hemorrhage and resuscitation model 

    Butler, Paul; Byers, Melissa; Wall, Piper; Devey, Jennifer; Hopkins, James; Henderson, LaRhee; Buising, Charisse (2007-05-31)
    While working on a hemorrhage with low-pressure stabilization protocol, we examined the possibility of identifying individual animals’ short term outcomes prior to occurrence using the hemorrhage patterns of variables ...
  • Star formation in UV-bright interacting galaxies 

    Hulsebus, Alan; Nelson, Charles H.; Ragan, Sarah; McGleam, Catherine (2007-05-31)
    Galaxy interactions are known to drive interstellar gas toward the nuclear regions, thus triggering bursts of star formation. To investigate the relationship between galaxy interactions and the induced star formation, we ...
  • Selective epoxidation of olefines using dioxirane system 

    Rosebraugh, Matthew; Cole, Erin; Mirafzal, Gholam A. (2007-05-31)
    Oxidation of alkenes using 1,3-dichloromethyldioxirane produces good to excellent yield of epoxide products. The reaction system is facile, mild, efficient and safe. Our results involving epoxidation of various alkene ...
  • Inhibition of drug efflux by pluronics in S. cerevisiae 

    Diezi, Thomas; Ruggle, Brian; Pandit, Nivedita K.; Sleister, Heidi (2007-05-31)
    Overexpression of P-gp efflux pumps is believed to be responsible for multidrug resistance of mammalian cancer cells. Inhibition of these pumps is expected to increase the efficacy and decrease the toxicity of chemotherapeutic ...
  • Photodetachment of O- 

    Zatsarinny, Oleg; Bartschat, Klaus (2007-05-31)
    Photodetachment of O- (2p5)2P° has been investigated with a new R-matrix (close-coupling) code [1] that uses a B-spline basis for the continuum functions. The completeness of the B-spline basis ensures that no Buttle ...
  • A Time-dependent study of photoelectron angular distributions due to laser-induced continuum structures 

    Grum-Grzhimailo, Alexei; Bartschat, Klaus; Strakhova, S.I. (2007-05-31)
    The coupling of an atomic continuum to a discrete state by a strong laser field leads to so-called “laser-induced continuum structures” (LICS). In photo-ionization studies, LICS manifest themselves as autoionization-like ...
  • Self-concept, depression, and negative peer interactions: Exploring the social and psychological health of college students 

    Glick, Gary C. (2007-05-31)
    This exploratory self-report study examined the links between self-concept, psychological health, and negative peer interactions among college students. While a wealth of past research is devoted to examining such constructs ...
  • Looking for indicators of imminent cardiovascular collapse 

    Anklam, Ashley; Dumke, Breanna; Mueller, Dana; Verdick, Christopher; Woodard, Meredith; Hopkins, James; Devey, Jennifer; Buising, Charisse; Henderson, LaRhee; Wall, Piper (2007-05-31)
    Various indicators are used as predictors of lifesaving intervention requirements and mortality risk following severe hemorrhage. We examined hemorrhage and resuscitation data for sensitive and specific indications of ...
  • Modeling Alzheimer’s disease in mice by selectively lesioning the cholinergic basal forebrain 

    Arter, Natalie; Wrenn, Craige C. (2007-06-01)
    One pathological feature of Alzheimer’s disease (AD) is the degeneration of the cholinergic basal forebrain (CBF). The importance of this degeneration in AD is suggested by the observation that the degree of CBF degeneration ...
  • Monitoring microvascular blood flow during hemorrhage and resuscitation 

    Davidson, Natalie; Stewart, Jacqueline; Haskell, Kim; Hopkins, James; Devey, Jennifer; Buising, Charisse; Henderson, LaRhee; Wall, Piper (2007-06-01)
    Blood flow through the microvascular (arterioles, capillaries, venules) is critical to survival. Until recently, microvascular responses to cardiovascular events, such as hemorrhage and resuscitation, have been difficult ...
  • Proteomic analysis of the membrane skeleton of Tetrahymena thermophila 

    Anderson, Paul C.; Wentland, Amy L.; Beussman, Douglas J.; Fulton, Ross B.; Murakami, Mark; Cole, Eric S.; Said, Heather; Zbornik, Erica; Witarsa, Freddy; Seidel, Jennifer; Honts, Jerry E. (2007-06-01)
    The membrane skeleton of the Tetrahymena is likely to determine many aspects of the cell surface structure of this ciliated protozoan. The availability of the genomic sequence of Tetrahymena thermophila has facilitated a ...
  • The Development of the P300 event related potential in rats during the initial stages of shaping lever pressing 

    Blomgren, Katherine; Rozek, Ellen; Verlautz, Stephanie; Grinsted, Kristen; Klipec, William D. (2007-06-01)
    Several experiments in our laboratory have shown that P300 ERP amplitude in rats is a decremental function of conditioned stimulus proximity to primary reinforcement in behavioral chains. We have also demonstrated robust ...
  • Evaluating comprehension of written pharmacy materials: Preliminary experience with the Cloze procedure 

    Miller, Michael J.; DeWitt, Jane E.; Murr, Anne H.; Hochhauser, Mark; Davis, Caitlin M.; Sager, Emily R.; Weefar, Gabriel (2007-06-01)
    Objective: The objective of this research was to assess reading comprehension of a pharmacy-related educational pamphlet using the cloze procedure in subjects expected to exhibit a wide range of health literacy proficiency. ...
  • Hubble space telescope imaging of seyfert galaxies 

    Bennett, Wendy; Madland, Mark; Weinzirl, Timothy; Nelson, Charles H. (2007-06-01)
    Recent searches for massive black holes in galactic nuclei show that they are common if not ubiquitous. Furthermore, there are important relationships between black hole mass and properties characterizing the size and ...