130 research outputs found

    A Reconstruction of Proto-Sogeram: Phonology, Lexicon, and Morphosyntax

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    The Sogeram languages are a family of ten languages spoken in central Madang Province, Papua New Guinea. This dissertation presents a reconstruction of Proto-Sogeram, including sections on its phonology, lexicon, verbal morphology, nominal morphology, and syntax. The methodology employed is, for the most part, the traditional comparative method, especially in the sections focusing on phonology, lexicon, and morphology. But I also argue for methodological innovations to the comparative method, which are grounded in a theoretical understanding of the nature of language and language change. These innovations allow for the reconstruction of syntax, and I reconstruct a good deal of the grammar of Proto-Sogeram. I also discuss many of the various innovations that the Sogeram languages have undergone, and conclude with a grammar sketch of Proto-Sogeram as I reconstruct it.The dissertation also contains six appendices, each of which is a grammar sketch of a previously undescribed Sogeram language. (Appendix 4 is actually a description of the two closely related Aisi languages.) These are the result of my fieldwork in Madang Province. The data from that fieldwork, along with data from other linguists on the three other Sogeram languages, constitutes the synchronic material on which the reconstruction is based

    Communication Technologies and Interpersonal Relationships: Some Considerations from Theology

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    While the unintended consequences and high pace of change associated with technology will change the nature and types of our interpersonal relationships, Christian theology provides a lens through which we can evaluate these changes. In this paper we outline some theological principles that undergird our understanding of what God intends for relationships, as well as ways that our relationships are either consistent or inconsistent with God\u27s intentions in terms of healthy and unhealthy relationships. We then discuss ways in which communication technology can amplify both positive and negative aspects of relationships, providing examples from the workplace. We classify the impact of technology on relationships through one of four categories: connectivity, closeness, engagement, and/or reciprocal understanding. Finally, we summarize our conclusions about ways that Christians could think about and engage with technology, and we discuss some areas where future research would be useful

    Chemical Analyses for Alcove 8/Niche 3 Tracer Studies

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    The objective of this task “Analytical Support For Tracer Studies in Alcove 8 / Niche 3” is to provide chemical analyses for the tracer studies at Alcove 8 / Niche 3 in the Exploratory Studies Facilities (ESF). This analytical support includes developing procedures for measuring tracer concentrations and then performing the tracer (and other background constituent) analyses for the water samples generated from each Alcove 8 / Niche 3 tracer test. These tracer tests are part of the Flow and Seepage Testing in Alcove 8/Niche 3 (TWP-NBS-HS-000004 REV 00). The overall goal of this study is to quantify large scale infiltration and seepage processes in the unsaturated zone at the ESF at Yucca Mountain

    Swine Housing Impacts on Environment and Behavior: A comparison between hoop structures and total environmental control

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    The effect of housing on animal environment and behavior have been studied in a comparative trial with three deep-bedded hoop structures and one totally, environmentally- controlled slatted-floor building. In order to assess animal welfare, behavior indicative of both poor and rich welfare were quantified. Behavior indicative of poor welfare were considered to be the performance of aberrant behavior, stereotypical behavior and excessive fighting. Behaviors indicative of rich behavior were the performance of normal maintenance behaviors and play behavior. Hoop structures experienced lower winter air temperatures than did the confinement building (mean, 4.8 0 vs. 18.1 0 C), but effective temperatures for the animals were enhanced in the hoop structure by heat generated by the decomposing bedded pack (ranging from approximately –1.1 0 C to 47 0 C). The confinement building maintained a higher ammonia level than did the hoop structures. Pigs raised in the confinement system which did use bedding were found to be resting more often (P \u3c .03); however, they were also found to perform more aberrant and stereotypical behavior in addition to more frequent fighting (P \u3c .03). Pigs raised in the hoop structure were found to perform more play behavior than confinement raised pigs (P \u3c .03). Based on the greater incidence of aberrant, stereotyped, and agonistic behavior of confinement pigs and the greater incidence of play behavior by hoop raised pigs; the welfare of hoop raised pigs is considered to be richer than that of confinement raised pigs. The major contributing factor to explain this is likely the provision of bedding, which allows the pigs an opportunity to perform species typical behavior

    Loss of the neuroprotective factor Sphingosine 1-phosphate early in Alzheimer\u27s disease pathogenesis

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    Background The greatest genetic risk factor for late-onset Alzheimer\u27s disease (AD) is the ϵ4 allele of Apolipoprotein E (ApoE). ApoE regulates secretion of the potent neuroprotective signaling lipid Sphingosine 1-phosphate (S1P). S1P is derived by phosphorylation of sphingosine, catalysed by sphingosine kinases 1 and 2 (SphK1 and 2), and SphK1 positively regulates glutamate secretion and synaptic strength in hippocampal neurons. S1P and its receptor family have been subject to intense pharmacological interest in recent years, following approval of the immunomodulatory drug Fingolimod, an S1P mimetic, for relapsing multiple sclerosis. Results We quantified S1P levels in six brain regions that are differentially affected by AD pathology, in a cohort of 34 post-mortem brains, divided into four groups based on Braak neurofibrillary tangle staging. S1P declined with increasing Braak stage, and this was most pronounced in brain regions most heavily affected by AD pathology. The S1P/sphingosine ratio was 66% and 64% lower in Braak stage III/IV hippocampus (p = 0.010) and inferior temporal cortex (p = 0.014), respectively, compared to controls. In accordance with this change, both SphK1 and SphK2 activity declined with increasing Braak pathology in the hippocampus (p = 0.032 and 0.047, respectively). S1P/sphingosine ratio was 2.5-fold higher in hippocampus of ApoE2 carriers compared to ApoE4 carriers, and multivariate regression showed a significant association between APOE genotype and hippocampal S1P/sphingosine (p = 0.0495), suggesting a new link between APOE genotype and pre-disposition to AD. Conclusions This study demonstrates loss of S1P and sphingosine kinase activity early in AD pathogenesis, and prior to AD diagnosis. Our findings establish a rationale for further exploring S1P receptor pharmacology in the context of AD therapy

    Control of intestinal stem cell function and proliferation by mitochondrial pyruvate metabolism.

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    Most differentiated cells convert glucose to pyruvate in the cytosol through glycolysis, followed by pyruvate oxidation in the mitochondria. These processes are linked by the mitochondrial pyruvate carrier (MPC), which is required for efficient mitochondrial pyruvate uptake. In contrast, proliferative cells, including many cancer and stem cells, perform glycolysis robustly but limit fractional mitochondrial pyruvate oxidation. We sought to understand the role this transition from glycolysis to pyruvate oxidation plays in stem cell maintenance and differentiation. Loss of the MPC in Lgr5-EGFP-positive stem cells, or treatment of intestinal organoids with an MPC inhibitor, increases proliferation and expands the stem cell compartment. Similarly, genetic deletion of the MPC in Drosophila intestinal stem cells also increases proliferation, whereas MPC overexpression suppresses stem cell proliferation. These data demonstrate that limiting mitochondrial pyruvate metabolism is necessary and sufficient to maintain the proliferation of intestinal stem cells

    Field Demonstration of Carbon Dioxide Miscible Flooding in the Lansing-Kansas City Formation, Central Kansas

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    A pilot carbon dioxide miscible flood was initiated in the Lansing Kansas City C formation in the Hall Gurney Field, Russell County, Kansas. The reservoir zone is an oomoldic carbonate located at a depth of about 2900 feet. The pilot consists of one carbon dioxide injection well and three production wells. Continuous carbon dioxide injection began on December 2, 2003. By the end of June 2005, 16.19 MM lb of carbon dioxide was injected into the pilot area. Injection was converted to water on June 21, 2005 to reduce operating costs to a breakeven level with the expectation that sufficient carbon dioxide was injected to displace the oil bank to the production wells by water injection. By March 7,2010, 8,736 bbl of oil were produced from the pilot. Production from wells to the northwest of the pilot region indicates that oil displaced from carbon dioxide injection was produced from Colliver A7, Colliver A3, Colliver A14 and Graham A4 located on adjacent leases. About 19,166 bbl of incremental oil were estimated to have been produced from these wells as of March 7, 2010. There is evidence of a directional permeability trend toward the NW through the pilot region. The majority of the injected carbon dioxide remains in the pilot region, which has been maintained at a pressure at or above the minimum miscibility pressure. Estimated oil recovery attributed to the CO2 flood is 27,902 bbl which is equivalent to a gross CO2 utilization of 4.8 MCF/bbl. The pilot project is not economic
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