194 research outputs found

    Effect of Land Application of Liquid Sulfurtrap on Grain Yield and Quality in Winter Canola and the Impact of Soil Ph on Phosphorus Extraction Method Results

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    With rising production costs in both agriculture and oil and gas industries, developing management practices that are both cost effective and environmentally sound is challenging, but of great importance. Liquid Sulfur Trap is a newly patented material intended for use in midstream hydrocarbon gas desulfurization processes. Disposal via deep well injection is currently standard practice for similar oil & gas waste materials. However, spent Liquid Sulfur Trap (LST) may be useful in agricultural environments due to its high concentrations of potassium (K) and sulfur (S), which are essential plant nutrients. This study was conducted to determine the effects of land applied LST on grain yield and grain quality in winter canola. Treatments consist of variations in application rate and timing for two nutrient sources, LST and a K and S equivalent conventional fertilizer blend (PAS) comprised of potash (KCl) and ammonium sulfate ((NH4)2SO4). Field trials were set up as replicated factorials in a randomized complete block design, with a check plot receiving neither LST or PAS, and three replications per treatment. Normalized difference vegetative index (NDVI) was collected periodically during the growing season, while grain data was collected at harvest. Grain quality was determined post-harvest using near infrared spectroscopy (NIR) to analyze grain oil and protein content. The calcium carbonate equivalence (CCE) of LST was evaluated using acid-base titration and a soil incubation study. LST application reduced fall NDVI in trials at LCB and Perkins, however differences in grain yield, protein, and oil content were not statistically significant. Application timing had the strongest effect, where spring applications increased NDVI by approximately 0.075 and grain yield by approximately 350 kg ha-1 when compared to fall applications. The CCE of LST as determined by the soil incubation studies was 15.6%. The effects of LST on winter canola are difficult to assess due to wildlife grazing and poor winter survival. While the CCE of LST is relatively low, soil acidity was neutralized much more rapidly than limed soils.Plant & Soil Science

    Evaluation of phosphorus fertilizer recommendations in no-till winter wheat

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    Grain drill fertilizer calibration

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    International Pediatric ORL Group (IPOG) laryngomalacia consensus recommendations

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    Objective To provide recommendations for the comprehensive management of young infants who present with signs or symptoms concerning for laryngomalacia. Methods Expert opinion by the members of the International Pediatric Otolaryngology Group (IPOG). Results Consensus recommendations include initial care and triage recommendations for health care providers who commonly evaluate young infants with noisy breathing. The consensus statement also provides comprehensive care recommendations for otolaryngologists who manage young infants with laryngomalacia including: evaluation and treatment considerations for commonly debated issues in laryngomalacia, initial work-up of infants presenting with inspiratory stridor, treatment recommendations based on disease severity, management of the infant with feeding difficulties, post-surgical treatment management recommendations, and suggestions for acid suppression therapy. Conclusion Laryngomalacia care consensus recommendations are aimed at improving patient-centered care in infants with laryngomalacia

    Repeated exposure to socioeconomic disadvantage and health selection as life course pathways to mid-life depressive and anxiety disorders

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    The biomedical examination was funded by Medical Research Council [G0000934], awarded under the Health of the Public initiative. Charlotte Clark is supported by an Engineering and Physical Sciences Research Fellowship. Bryan Rodgers is supported by Research Fellowships Nos 148948 and 366758 and by Program Grant No. 179805 from the National Health and Medical Research Council of Australia. Research at the Institute of Child Health and Great Ormond Street Hospital for Children NHS Trust benefits from R&D funding received from the NHS Executive

    LDHB contributes to the regulation of lactate levels and basal insulin secretion in human pancreatic β cells

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    Using 13C6 glucose labeling coupled to gas chromatography-mass spectrometry and 2D 1H-13C heteronuclear single quantum coherence NMR spectroscopy, we have obtained a comparative high-resolution map of glucose fate underpinning β cell function. In both mouse and human islets, the contribution of glucose to the tricarboxylic acid (TCA) cycle is similar. Pyruvate fueling of the TCA cycle is primarily mediated by the activity of pyruvate dehydrogenase, with lower flux through pyruvate carboxylase. While the conversion of pyruvate to lactate by lactate dehydrogenase (LDH) can be detected in islets of both species, lactate accumulation is 6-fold higher in human islets. Human islets express LDH, with low-moderate LDHA expression and β cell-specific LDHB expression. LDHB inhibition amplifies LDHA-dependent lactate generation in mouse and human β cells and increases basal insulin release. Lastly, cis-instrument Mendelian randomization shows that low LDHB expression levels correlate with elevated fasting insulin in humans. Thus, LDHB limits lactate generation in β cells to maintain appropriate insulin release.</p

    Ecosystem services and the idea of shared values

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    Ecosystem services conceptualise the diverse values that ecosystems provide to humanity. This was recognised in the United Kingdom's National Ecosystem Assessment, which noted that appreciation of the full value of ecosystem services requires recognition of values that are shared. By operationalising the shared values concept, it is argued that the contribution of ecosystem services to human well-being can be represented more holistically. This paper considers current understanding of shared values and develops a new metanarrative of shared values beyond the aggregated utilities of individuals. This metanarrative seeks to conceptualise how values can be held both individually and communally, and what this means for identifying their scale and means of enumeration. The paper poses a new reading of the idea of shared values that reconciles the elicitation of preformed individual values with the formation and expression of shared social values. The implication is that shared values need to be conceived as normative constructs that are derived through social processes of value formation and expression. Shared values thus do not necessarily exist a priori; they can be deliberated through formal and informal processes through which individuals can separate their own preferences from a broader metanarrative about what values ought to be shared

    Craton Destruction 2:Evolution of Cratonic Lithosphere after a Rapid Keel Delamination Event

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    Cratonic lithosphere beneath the eastern North China Craton has undergone extensive destruction since early Jurassic times (approximately 190Ma). This is recorded in its episodic tectonic and magmatic history. In this time, its lithosphere changed thickness from approximately 200km to <60km. This change was associated with a peak time (approximately 120Ma) of lithospheric thinning and magmatism that was linked with high surface heat flow recorded in rift basins. We believe that these records are best explained by a two-stage evolutionary process. First, approximately 100km of cratonic keel underlying a weak midlithospheric discontinuity layer (approximately 80-100km) was rapidly removed in <10-20Ma. This keel delamination stage was followed by a protracted (approximately 50-100Ma) period of convective erosion and/or lithospheric extension that thinned the remaining lithosphere and continuously reworked the former cratonic lithospheric mantle. This study focuses on numerical exploration of the well-recorded second stage of the eastern North China Craton's lithospheric evolution. We find that (1) lithospheric mantle capped by thick crust can be locally replaced by deeper mantle material in 100Ma due to small-scale convective erosion; (2) asthenospheric upwelling and related extension can replace lithospheric mantle over horizontal length scales of 50-150km, and account for observed mushroom-shaped low-velocity structures; (3) modeling shows conditions that could lead to the multiple eastern North China Craton magmatic pulses between 190 and 115Ma that are associated with temporal and spatial changes in magma source petrology and a magmatic hiatus; and (4) a wet midlithospheric discontinuity layer provides a potential source material for on-craton magmatism
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