545 research outputs found
Fibonacci s-Cullen and s-Woodall Numbers
No full textAbstract The m-th Cullen number C m is a number of the form m2 m + 1 and the m-th Woodall number W m has the form m2 m − 1. In 2003, Luca and Stȃnicȃ proved that the largest Fibonacci number in the Cullen sequence is F 4 = 3 and that F 1 = F 2 = 1 are the largest Fibonacci numbers in the Woodall sequence. Very recently, the second author proved that, for any given s > 1, the equation F n = ms m ± 1 has only finitely many solutions, and they are effectively computable. In this note, we shall provide the explicit form of the possible solutions
Replication Data for Formalization and consistency heighten organizational rule following: Experimental and survey evidence
No full textReplication materials for the study "Formalization and consistency heighten organizational rule following: Experimental and survey evidence" by Borry / DeHart-Davis / Kaufmann / Merritt / Mohr / Tummers, published in Public Administration, https://doi.org/10.1111/padm.1240
Replication Data for Formalization and consistency heighten organizational rule following: Experimental and survey evidence
No full textReplication materials for the study "Formalization and consistency heighten organizational rule following: Experimental and survey evidence" by Borry / DeHart-Davis / Kaufmann / Merritt / Mohr / Tummers, published in Public Administration, https://doi.org/10.1111/padm.1240
Development of novel methodologies utilizing quaternary ammonium salts as catalysts
No full textThe first half of this thesis (Chapter 2) described the development of a fluoride-promoted conjugate addition of sulfur-stabilized carbanion nucleophiles to α,β-unsaturated ketones and esters. This reaction was achieved using a substoichiometric amount of TBAF, resulting in high yields on the desired 1,4-addition product. The addition of 1,3-dithianes was given particular focus as a novel method for the preparation of differentially protect 1,4-dicarbonyl compounds. Observation by 13C NMR spectroscopy provided evidence that the reaction proceeds through an ion pair, and attempts to extend this reaction to asymmetric additions using a chiral counterion are presented in detail.
The second half of this thesis (Chapter 3) details development of a phase transfer catalyzed [2,3]-sigmatropic rearrangement of allyloxy carbonyl compounds. Initial investigation focused on identifying viable substrate classes that would undergo selective [2,3]-rearrangement under phase transfer conditions. Under certain conditions, the [2,3]-sigmatropic rearrangement of allyloxy carbonyl compounds takes place in the presence of a phase transfer agent, providing a rare example of a phase transfer catalyzed unimolecular reaction. In the course of this investigation it was found that catalysis is dependent on several variables including base concentration, catalyst structure, and substrate lipophilicity. Preliminary testing of chiral, non-racemic phase transfer catalysts has shown promising levels of enantioselectivity for future development.Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-08-01The student, Lindsey Cullen, accepted the attached license on 2015-07-17 at 14:10.The student, Lindsey Cullen, submitted this Dissertation for approval on 2015-07-17 at 14:17.This Dissertation was approved for publication on 2015-07-17 at 16:21.DSpace SAF Submission Ingestion Package generated from Vireo submission #8540 on 2015-09-29 at 15:00:48Made available in DSpace on 2015-09-29T20:50:19Z (GMT). No. of bitstreams: 3
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Previous issue date: 2015-07-17Embargo set by: Seth Robbins for item 89496
Lift date: 2017-09-29T20:50:34Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 89496 on 2017-09-30T09:15:38Z
Ultrastructural findings in feline corneal sequestra
No full textObjectives (1) To describe the ultrastructural features of corneal sequestra in cats; and (2) to enhance our understanding regarding the pathogenesis of feline corneal sequestration. Methods Nine corneal sequestra were harvested via keratectomy from globes of nine cats. The sequestra were routinely fixed then postfixed for high resolution light and transmission electron microscopy (HR-LM and TEM, respectively). The tissues were embedded in Epon/Araldite. Sections of 0.5-mu m thickness were cut and stained with 1% toluidine blue in 1% sodium tetraborate solution for HR-LM. Ultrathin sections were collected on copper grids and stained with uranyl acetate and Sato's lead stain for TEM. Ultrathin sections were examined and the images were captured on an Advantage HR CCD camera using a Hitachi 7500 electron microscope operated at 80 kV. Two healthy corneas from two cats were harvested immediately following euthanasia. These corneal tissues (control samples) were processed in the same manner as the corneal sequestra for HR-LM and TEM. A portion of each sequestrum was also submitted for polymerase chain reaction (PCR) testing for infectious agents including feline herpesvirus-1 (FHV-1), Toxoplasma gondii, Chlamydophila felis and Mycoplasma spp. Results Ultrastructure of healthy corneal tissues revealed basal corneal epithelial cells aligned adjacent to a thin acellular layer similar to Bowman's layer with underlying tightly packed, regularly arranged, collagen fibrils oriented in different planes. Keratocytes were elongated and had long and irregularly shaped nuclei, and cytoplasm contained rough endoplasmic reticulum and abundant membrane-bound vesicles. In contrast, corneal sequestra contained varying amounts of an amorphous, electron-dense substance, continuous with intact basal epithelial basement membranes peripherally, and overlying corneal ulceration and loosely packed collagen fibrils. Remnants of necrotic keratocytes were seen in spaces between disarranged collagen layers. In all samples, occasional keratocytes exhibited morphology indicative of apoptosis including clumping and margination of chromatin, and shrunken cytoplasm. Varying degrees of inflammation were noted on HR-LM and TEM of affected corneas including peri- and intralesional neutrophils, lymphocytes, plasma cells, and macrophages. Corneal sequestra were FHV-1-positive (n = 3), FHV-1- and T. gondii-positive (n = 1), T. gondii-positive (n = 3), or negative for DNA of these infectious agents (n = 2) using PCR. All corneal sequestra were negative for DNA of Chlamydophila felis and Mycoplasma spp. using PCR. Conclusions Apoptosis may play a role in the pathogenesis of feline corneal sequestration independent of the presence of DNA of these infectious organisms. Prospective clinical studies are warranted to further understand the significance of T. gondii in relation to feline corneal sequestration.PT: J; CR: AOUIZERATE F, 1993, BRIT J OPHTHALMOL, V77, P107 BELAK S, 1993, VET RES COMMUN, V17, P55 BURNEY DP, 1998, VET PARASITOL, V79, P181 BURNEY DP, 1999, J PARASITOL, V85, P947 CHAN CC, 1994, AM J OPHTHALMOL, V117, P803 CHAVKIN MJ, 1992, PROGR VET COMP OPHTH, V2, P29 CULLEN CL, 1999, VET OPHTHALMOLOGY, V2, P197 DAVIDSON MG, 1993, INVEST OPHTH VIS SCI, V34, P3653 DAVIDSON MG, 1998, VET OPHTHALMOLOGY, V1, P71 DEPRAETERE V, 1997, SEMIN IMMUNOL, V9, P93 DUBEY JP, 1987, VET CLIN N AM-SMALL, V17, P1389 DUBEY JP, 1993, J AM VET MED ASSOC, V203, P1556 EJIMA H, 1993, J VET MED SCI, V55, P1051 FEATHERSTONE HJ, 2004, VET OPHTHALMOL, V7, P229 GELATT KN, 1971, VET MED SMALL ANIMAL, V66, P561 GELATT KN, 1973, J AM ANIM HOSP ASSOC, V9, P204 GEMENSKY AJ, 2001, J AM VET MED ASSOC, V219, P1550 GEMENSKY AJ, 2001, J AM VET MED ASSOC, V219, P1568 HAKANSON NE, 1994, VET COMP OPHTHALMOL, V4, P179 HU SX, 2001, CHINESE MED J-PEKING, V114, P640 JONES CD, 2000, INVEST OPHTH VIS SCI, V41, P634 LAPPIN MR, 1989, AM J VET RES, V50, P1586 LAPPIN MR, 1993, AM J VET RES, V54, P415 LAPPIN MR, 1996, AM J VET RES, V57, P1589 MAGGS DJ, 1999, AM J VET RES, V60, P932 MATSUBARA M, 1991, INVEST OPHTH VIS SCI, V32, P3221 MOHAN RR, 1997, EXP EYE RES, V65, P575 MORGAN RV, 1994, J AM ANIM HOSP ASSOC, V30, P24 NASISSE MP, 1998, AM J VET RES, V59, P856 PODSKOCHY A, 2002, CORNEA, V21, P91 SOURI EN, 1975, VET MED SMALL ANIM C, V70, P531 STARTUP FG, 1988, J SMALL ANIM PRACT, V29, P476 STILES J, 1996, AM J VET RES, V57, P264 STILES J, 1997, AM J VET RES, V58, P338 WILSON SE, 1997, EXP EYE RES, V64, P775 YASUHARA S, 2003, J HISTOCHEM CYTOCHEM, V51, P873; NR: 36; TC: 0; J9: VET OPHTHALMOL; PG: 9; GA: 964WASource type: Prin
Do Personnel with Lived Experience Cultivate Public Values? Insights and Lessons from Mental Health Care Managers
No full textHealth care organizations charged with addressing public problems sometimes employ persons with relevant lived experience in meaningful organizational roles. Because of their prior experience living with the challenges their facilities are charged with addressing, these individuals have intimate knowledge of the subject matter that professional training and education cannot replicate. Mental health treatment facilities in particular have demonstrated a growing trend toward incorporating staff members with lived experience. This study conducted semi-structured interviews with senior-level managers of organizations in this field to gain insight into the public values associated with this practice. Findings reveal that several public values, including dialogue, social cohesion, sustainability, productivity, and altruism, are cultivated when treatment facilities incorporate staff members with lived experience into service delivery. This study concludes with lessons for mental health care managers seeking to innovatively address mental illness
What Makes an Organization Public? Managers’ Perceptions in the Mental Health and Substance Abuse Treatment System
No full textThe question “What makes an organization public?” is a leading point of scholarly inquiry in the field of public administration. This study supplements existing theory on publicness by further exploring the primary influences on an organization’s publicness—influences identified by analyzing data from in-depth interviews with senior-level managers of mental health and substance abuse treatment facilities. Results from a grounded theoretical analysis of these managers’ perceptions provide support for a conceptual framework of organizational publicness in which political authority, horizontal engagement, and public engagement are associated with higher levels of publicness. Better understanding of the prism through which senior managers conceptualize publicness may enhance managerial awareness of the most salient structural and institutional mechanisms that empower treatment facilities to effectively support individuals suffering from mental health disorders such as substance abuse, emotional distress, and depression
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