Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 49 for “"Selectors"”.
-
Design, synthesis, and evaluation of conformationally rigid naproxen chiral selectors
… When bonded to silica, this type of chiral selectors of rigid conformation are evaluated chromatographically and demonstrate enhanced enantioselectivity towards naproxen and other members of profens, an important group of non-steroidal anti-inflammatory drugs(NSAIDs). The improved …
-
Design and utilization of chiral selectors for enantioselective membrane transport
… chiral recognition mechanisms have led to chiral selectors which, when immobilized and used as chromatographic stationary phases, show high levels of enantioselectivity. Since these selectors are designed to function in essentially the same manner whether immobilized or in solution, the …
-
Utilization of Rationally Designed Small Molecule Chiral Selectors in Novel Enantioselective Processes
In addition, phase transfer catalyzed biphasic kinetic resolutions of several racemic amides containing electron-deficient aromatic moieties are described. The method revolves around forming Meisenheimer adducts which are stabilized by quaternary ammonium salts in a nonpolar medium. When run in the …
-
Design, synthesis, and evaluation of selectors and stationary phases for improved liquid chromatographic separations
Finally, the rational design of an improved selector and stationary phase for the carbon cluster buckminsterfullerene (C$\sb{60}$) is described. A tripodal selector containing three $\pi$-acidic aromatic rings for simultaneous multipoint interaction with the spherical analyte molecule was …
-
Improving settleability and achieving biological phosphorus removal through the application of sidestream gravimetric selectors
… This has the potential to apply external selectors to existing infrastructure throughout plants worldwide to achieve not only biological phosphorus removal, but also improved settleability with a very minor capital investment.
-
The effect of anoxic selectors on the control of activated sludge bulking and foaming
… wastewater to evaluate the effects of anoxic selectors on controlling activated sludge bulking and foaming. These experiments were conducted with two pilot plants; a three stage anoxic selector preceding a complete mix system (experimental unit) and a complete mix system (control unit). …
-
Reading children : how children and selectors perceive and construct the reading of fiction in two South African schools
… to examine the construction of readers by book selectors; to find out how children saw themselves as readers and what their own feelings were about reading; and to speculate on the extent to which policies are changing or can be changed. In order to do this I have looked at the situation in two …
-
Amorality and morality penalties in selection decisions
… decisions. In Chapter 1, I propose that selectors tend to seek out information on competence and sociability but ignore morality. Three studies with over 2,400 working professionals provided support for the hypothesized tendency toward amorality in selectors’ decisions. I find that …
-
Chromatographic, Spectroscopic and Crystallographic Investigations of Chiral Recognition Processes
… recently developed low-molecular weight chiral selectors are capable of differentiating analyte enantiomers. When covalently linked to silica, these chiral selectors are capable of affording chromatographic enantioseparations. Series of homologous analytes were prepared and chromatographed on …
-
Differential perceptions of prospective predoctoral psychology interns : an experimental investigation of potential bias in selection
… important and consistent criteria for intern selectors are breadth and types of clinical experiences, performance during interviews, and letters of recommendation.A criteria that was not specifically addressed in earlier surveys of intern selectors was doctoral program type (i.e. clinical, …
-
Enantio-Selective Mechanism of the Poly-Proline Chiral Stationary Phase: a Molecular Dynamics Study
… series of ab initio calculations for proline selectors from di- to hexa-proline and a series of six chiral analytes. Then molecular dynamics simulations are performed to study the solvation, conformational preferences at the interface, and the selectivity. The solvation and conformational …
-
Performance pay and teacher selection: do performance pay programs attract higher-ability teachers?
… teachers who are exogenously assigned. If self-selectors earn a higher expected total pay or are more likely to earn a bonus than an exogenously assigned teacher, I show that this implies that self-selectors are higher ability teachers on average. I test for this difference in cross-sectional …
-
Analyzing the Wien filters for the DANTE ion accelerator
… in an ion beam. Also referred to as mass selectors or velocity selectors, Wien filters operate on the principles of the Lorentz force in order to select ions of a certain mass while filtering out all others. The Wien filters in DANTE were modeled and tested in order to determine their …
-
Focused active inference
… on the suboptimality of heuristic observation selectors. Prior work in active inference has considered only the unfocused problem, which assumes all latent states are of inferential interest. Often one learns a sparse, high-dimensional model from data and reuses that model for new queries that …
-
Form is temporary, class is permanent: Statistical methods for predicting the career trajectories and contributions of players in the sport of cricket
… measures of cricketing ability; coaches and selectors often cite recent performances, or form, as a reason for dropping or selecting certain players, but have no means of quantifying how such factors may impact a player’s true, underlying ability. In order to detect and quantify temporal …
-
Cognitive RF Front-end Control
… shows that CogRF can fulfil the objective of pre-selectors by minimizing the effects of weak and moderately-powered neighboring-channel signals on the desired signal. This research shows that CogRF can be an alternative to high-performance pre-selectors, and hence, CogRF is a viable architecture …
-
Design and development of an automated sorting and orienting machine for vials
… shows the feasibility of using mechanical selectors to accurately orient vials with a high throughput. The final full-scale design lays out the setup of the entire machine.
-
Electrically tunable terahertz quantum cascade lasers
… (DFB) THz wire QCLs with robust mode selectors are designed and fabricated at the MIT Microsystems Technology Laboratories (MTL) using processes developed at our group. By integrating the MEMS tuner chips with the THz QCL chips, broadband electrically tunable THz QCLs are successfully …
-
Optimizing Vector Instruction Selection for Digital Signal Processing
… 12%) than the Halide and LLVM vector instruction selectors that have been developed over the past decade.
Page 1 of 3