2,629 research outputs found
A method of classifying shortleaf pine sites in Missouri
This bulletin reports on a portion of School of Forestry Project 346, 'Forest site Evaluation'--P. [3].Digitized 2007 AES.Includes bibliographical references (pages 44-46)
Growth in well-stocked natural oak stands in Missouri
This bulletin reports on School of Forestry Research Project 124, Timber Economics--P. [2].Digitized 2007 AES.Includes bibliographical references (pages 19-20)
Interception of precipitation by a hardwood forest floor in the Missouri Ozarks
Digitized 2007 AES.Includes bibliographical references (pages 23-24)
Recovering the gay village : a comparative historical geography of urban change and planning in Toronto and Sydney
This chapter argues that the historical geographies of Torontoâs Church and Wellesley Street district and Sydneyâs Oxford Street gay villages are important in understanding ongoing contemporary transformations in both locations. LGBT and queer communities as well as mainstream interests argue that these gay villages are in some form of âdeclineâ for various social, political, and economic reasons. Given their similar histories and geographies, our analysis considers howthese historical geographies have both enabled and constrained how the respective gay villages respond to these challenges, opening up and closing down particular possibilities for alternative (and relational) geographies. While there are a number of ways to consider these historical geographies, we focus on three factors for analysis: post- World War II planning policies, the emergence of âcity of neighborhoodsâ discourses, and the positioning of gay villages within neoliberal processes of commodification and consumerism. We conclude that these distinctive historical geographies offer a cogent set of understandings by providing suggestive explanations for how Torontoâs and Sydneyâs gendered and sexual landscapes are being reorganized in distinctive ways, and offer some wider implications for urban planning and policy
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The evolution of embryonic creek systems in a recently inundated large open coast managed realignment site
Managed realignment (MR) schemes are being implemented to compensate for the degradation of coastal habitats. However, evidence suggests that MR sites have lower biodiversity than anticipated, which has been linked to poor drainage. Despite creek networks playing an important role in enhancing site drainage in natural intertidal environments, there remains a shortage of data on the formation and evolution of creeks within MR sites. This study evaluates creek development at the Medmerry Managed Realignment Site, UK. Creek development is investigated using differential global positioning system(dGPS) data, supported by sedimentological analyses and a high-resolution digital surface model (DSM) derived from images taken using a small unmanned aerial vehicle. Measurements indicated that creeks will develop relatively quickly, but are influenced by differences in the sub-surface sedimentological conditions. A suitable level of agreement was found between the DSM and dGPS measurements, demonstrating the appropriateness of this method to study creek development within intertidal environments at a higher resolution than traditional surveying techniques. These results are used to propose the collapseof sub-surface piping as the primary creek formation mechanism. Findings are discussed in terms of increasing the success of MR schemes and enhancing site design to maximise the ecosystem services provided
On Random Bubble Lattices
We study random bubble lattices which can be produced by processes such as
first order phase transitions, and derive characteristics that are important
for understanding the percolation of distinct varieties of bubbles. The results
are relevant to the formation of topological defects as they show that infinite
domain walls and strings will be produced during appropriate first order
transitions, and that the most suitable regular lattice to study defect
formation in three dimensions is a face centered cubic lattice. Another
application of our work is to the distribution of voids in the large-scale
structure of the universe. We argue that the present universe is more akin to a
system undergoing a first-order phase transition than to one that is
crystallizing, as is implicit in the Voronoi foam description. Based on the
picture of a bubbly universe, we predict a mean coordination number for the
voids of 13.4. The mean coordination number may also be used as a tool to
distinguish between different scenarios for structure formation.Comment: several modifications including new abstract, comparison with froth
models, asymptotics of coordination number distribution, further discussion
of biased defects, and relevance to large-scale structur
Antischistosomal Properties of Sclareol and Its Heck-Coupled Derivatives:Design, Synthesis, Biological Evaluation and Untargeted Metabolomics
Sclareol, a plant-derived diterpenoid widely used as a fragrance and flavoring substance, is well-known for its promising antimicrobial and anticancer properties. However, its activity on helminth parasites has not been previously reported. Here, we show that sclareol is active against larval (IC50 â 13 ÎŒM), juvenile (IC50 = 5.0 ÎŒM), and adult (IC50 = 19.3 ÎŒM) stages of Schistosoma mansoni, a parasitic trematode responsible for the neglected tropical disease schistosomiasis. Microwave-assisted synthesis of Heck-coupled derivatives improved activity, with the substituents choice guided by the Matsy decision tree. The most active derivative 12 showed improved potency and selectivity on larval (IC50 â 2.2 ÎŒM, selectivity index (SI) â 22 in comparison to HepG2 cells), juvenile (IC50 = 1.7 ÎŒM, SI = 28.8), and adult schistosomes (IC50 = 9.4 ÎŒM, SI = 5.2). Scanning electron microscopy studies revealed that compound 12 induced blebbing of the adult worm surface at sublethal concentration (12.5 ÎŒM); moreover, the compound inhibited egg production at the lowest concentration tested (3.13 ÎŒM). The observed phenotype and data obtained by untargeted metabolomics suggested that compound 12 affects membrane lipid homeostasis by interfering with arachidonic acid metabolism. The same methodology applied to praziquantel (PZQ)-treated worms revealed sugar metabolism alterations that could be ascribed to the previously reported action of PZQ on serotonin signaling and/or effects on glycolysis. Importantly, our data suggest that compound 12 and PZQ exert different antischistosomal activities. More studies will be necessary to confirm the generated hypothesis and to progress the development of more potent antischistosomal sclareol derivatives
Submesoscale processes at shallow salinity fronts in the Bay of Bengal : observations during the winter monsoon
Author Posting. © American Meteorological Society, 2018. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 48 (2018): 479-509, doi:10.1175/JPO-D-16-0283.1.Lateral submesoscale processes and their influence on vertical stratification at shallow salinity fronts in the central Bay of Bengal during the winter monsoon are explored using high-resolution data from a cruise in November 2013. The observations are from a radiator survey centered at a salinity-controlled density front, embedded in a zone of moderate mesoscale strain (0.15 times the Coriolis parameter) and forced by winds with a downfront orientation. Below a thin mixed layer, often â€10 m, the analysis shows several dynamical signatures indicative of submesoscale processes: (i) negative Ertel potential vorticity (PV); (ii) low-PV anomalies with O(1â10) km lateral extent, where the vorticity estimated on isopycnals and the isopycnal thickness are tightly coupled, varying in lockstep to yield low PV; (iii) flow conditions susceptible to forced symmetric instability (FSI) or bearing the imprint of earlier FSI events; (iv) negative lateral gradients in the absolute momentum field (inertial instability); and (v) strong contribution from differential sheared advection at O(1) km scales to the growth rate of the depth-averaged stratification. The findings here show one-dimensional vertical processes alone cannot explain the vertical stratification and its lateral variability over O(1â10) km scales at the radiator survey.S. Ramachandran acknowledges support from the National Science Foundation
through award OCE 1558849 and the U.S. Office of
Naval Research, Grants N00014-13-1-0456 and N00014-17-
1-2355. A. Tandon acknowledges support from the U.S.
Office of Naval Research, Grants N00014-13-1-0456 and
N00014-17-1-2355. J. T. Farrar and R. A. Weller were
supported by the U.S. Office of Naval Research, Grant
N00014-13-1-0453, to collect the UCTD data and process
theUCTD and shipboard meteorological data. J. Nash, J. Mackinnon, and A. F. Waterhouse
acknowledge support from the U. S. Office of Naval Research,
Grants N00014-13-1-0503 and N00014-14-1-0455.
E. Shroyer acknowledges support from the U. S. Office of
Naval Research, Grants N00014-14-10236 and N00014-15-
12634. A. Mahadevan acknowledges support fromthe U. S.
Office of Naval Research, Grant N00014-13-10451.
A. J. Lucas and R. Pinkel acknowledge support from the
U. S. Office of Naval Research, Grant N00014-13-1-0489.2018-08-2
Creating Non-Believed Memories for Recent Autobiographical Events
A recent study showed that many people spontaneously report vivid memories of events that they do not believe to have occurred [1]. In the present experiment we tested for the first time whether, after powerful false memories have been created, debriefing might leave behind nonbelieved memories for the fake events. In Session 1 participants imitated simple actions, and in Session 2 they saw doctored video-recordings containing clips that falsely suggested they had performed additional (fake) actions. As in earlier studies, this procedure created powerful false memories. In Session 3, participants were debriefed and told that specific actions in the video were not truly performed. Beliefs and memories for all critical actions were tested before and after the debriefing. Results showed that debriefing undermined participants' beliefs in fake actions, but left behind residual memory-like content. These results indicate that debriefing can leave behind vivid false memories which are no longer believed, and thus we demonstrate for the first time that the memory of an event can be experimentally dissociated from the belief in the event's occurrence. These results also confirm that belief in and memory for an event can be independently-occurring constructs
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