1,652 research outputs found

    Low-cost, aerial photographic inventory of tidal wetlands

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    There are no author-identified significant results in this report

    Crop ontology in support of conservation and use of banana genetic resources

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    Poster presented at Workshop on Crop Ontology and Phenotyping Data Interoperability. Montpellier (France), 31 Mar-4 Apr 201

    Expanding a Fixed Route Bus System with the Lower Anthracite Transit System

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    We worked in partnership with the Lower Anthracite Transit System (LATS) to develop a proposed bus route in the town of Sunbury, PA, expanding their system to include more of Northumberland County. This bus route is predicated upon community-based feedback through surveys, where we designed and implemented a survey analyzing general transportation desires and interest in the route. We collected 207 total responses, where community feedback in these responses informed decisions about stop locations along the route. Survey responses are hugely beneficial for LATS, allowing them to understand what aspects of their transportation services work well and what can be improved further. This can help with future cases for funding and state approvals. We also created a webpage for the organization, to increase online presence and accessibility. This included maps that we were able to develop of the existing routes that are now available through the website to view, download, and print. Altogether, our work presents a practical and efficient solution to address transportation needs within the town of Sunbury. Continued collaboration between LATS and community members, even after our work on this project is complete, is critical in finalizing a fixed-route bus service that meets the diverse needs of the populations of Mount Carmel, Shamokin, and Sunbury. By carefully considering factors such as passenger demand and route feasibility, LATS can create a system that enhances accessibility, reduces traffic congestion, and promotes sustainability

    PDS4: Developing the Next Generation Planetary Data System

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    The Planetary Data System (PDS) is in the midst of a major upgrade to its system. This upgrade is a critical modernization of the PDS as it prepares to support the future needs of both the mission and scientific community. It entails improvements to the software system and the data standards, capitalizing on newer, data system approaches. The upgrade is important not only for the purpose of capturing results from NASA planetary science missions, but also for improving standards and interoperability among international planetary science data archives. As the demands of the missions and science community increase, PDS is positioning itself to evolve and meet those demands

    Analysis of amino acids by gas-liquid chromatography: The development of a method and its application

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    Ion exchange chromatography is the most widely used method for the analysis of amino acids. However, in respect of economy, speed, sensitivity and resolving power, gas liquid chromatography is potentially better than the conventional amino acid analyser. The technique requires that the amino acids be converted into some suitable volatile derivative prior to their separation by GLC. N-acetyl amino acid methyl esters were examined with regard to their suitability for gas chromatographic analysis, but were found to be not sufficiently volatile. When the N-trifluoroacetyl methyl esters were investigated no single column was found on which all of the amine acids could be resolved. However, it was found possible to separate all of the N-trifluoroacetyl methyl esters of the twenty amino acids which occur in proteins by using two columns - one coated with NPGS (neopentyl glycol succinate polyester) and the other coated with a mixture of DEGS (diethylene glycol suecinate) EGSS-X (ethylene glycol succinate polyenter chemically combined with a methyl silicone) and EGSP-Z (ethylene glycol suceinate polyester chemically combined with a methyl silicone). No better resolution of the N-trifluoroacetyl n-propyl or n-butyl esters of the amino acids was obtained when these derivatives were chromatographed on a number of columns than had seen achieved with the N-trifluoroacetyl methyl esters. Taking the response of the flame ionisation detector to N-trifluoroacetyl leucine methyl estor as unity, the response of the detector to the corresponding derivatives of the other amino acids was determined. Good reproducibility in the response factors was observed on both of the columns used for all of the amino acid derivatives with the exception of histidine, tryptophan and cystine. In order to assess the potential of the method, it was applied to hydrolysates of a number of pure peptides and also to mothanolysates of these peptides, prepared with methanol/HCI. Good agreement was obtained by both procedures. However, when the method wasapplied to poptides which had been elated from peptide maps, the results were poor. This was found to be due to the fact that a considerable amount of material was elated from the chromatography cower which produced spurious peaks on the chromatograms. When the method was applied to the analysis of hydrolysates of cytochrome c, insulin and bovine serua albumen, the results obtained were in poor agreement with the results of amino acid analysis carried out on the amino acid analyser. The chromatogram obtained from a methanolysate of cytochrome c gave reduced values for a number of amine acids such as valine and isoleucine. It appears that under the conditions of mothanolysis used, cleavage of bonds involving these amino acids does not proceed to completion. Butanolysis of leucylglyeylglycine was found to be much more rapid than methanolysis of this peptide, and so the N-trifluoroacetyl n-butyl esters of the amino acids map be more suitable derivatives for GLC studies

    A Gravitational Theory of the Quantum

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    The synthesis of quantum and gravitational physics is sought through a finite, realistic, locally causal theory where gravity plays a vital role not only during decoherent measurement but also during non-decoherent unitary evolution. Invariant set theory is built on geometric properties of a compact fractal-like subset IUI_U of cosmological state space on which the universe is assumed to evolve and from which the laws of physics are assumed to derive. Consistent with the primacy of IUI_U, a non-Euclidean (and hence non-classical) state-space metric gpg_p is defined, related to the pp-adic metric of number theory where pp is a large but finite Pythagorean prime. Uncertain states on IUI_U are described using complex Hilbert states, but only if their squared amplitudes are rational and corresponding complex phase angles are rational multiples of 2π2 \pi. Such Hilbert states are necessarily gpg_p-distant from states with either irrational squared amplitudes or irrational phase angles. The gappy fractal nature of IUI_U accounts for quantum complementarity and is characterised numerically by a generic number-theoretic incommensurateness between rational angles and rational cosines of angles. The Bell inequality, whose violation would be inconsistent with local realism, is shown to be gpg_p-distant from all forms of the inequality that are violated in any finite-precision experiment. The delayed-choice paradox is resolved through the computational irreducibility of IUI_U. The Schr\"odinger and Dirac equations describe evolution on IUI_U in the singular limit at p=p=\infty. By contrast, an extension of the Einstein field equations on IUI_U is proposed which reduces smoothly to general relativity as pp \rightarrow \infty. Novel proposals for the dark universe and the elimination of classical space-time singularities are given and experimental implications outlined

    Tools for understanding the agricultural production systems and their socio-economic context in target regions for the introduction of new banana cultivars: baseline intra-household survey.

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    Within the framework of the IITA-led project “Improvement of banana for smallholder farmers in the Great Lakes region of Africa” (also known as the “Breeding Better Bananas” project, http://breedingbetterbananas.org), Bioversity International and partners conducted baseline research in the target regions of Luwero and Mbarara in Uganda, and Bukoba, Meru, Moshi and Rungwe in Tanzania during 2015-2016, prior to conducting on-station and on-farm evaluations of the new NARITA banana cultivars. Five tools were used to characterise the banana and agricultural production systems, and the socioeconomic context of these systems, in the target regions. The research used a mixed-methods, participatory and sex-disaggregated approach to ensure that the knowledge, experiences and opinions of as many people as possible were obtained. The understanding gained from the baseline research will: • Be fed into the banana breeding pipeline at multiple entry points to assist with breeding banana cultivars that better meet the requirements of the users. Some of these entry points are: setting of breeding targets; selection of parent material; evaluation in regional on-station and on-farm trials; participatory varietal selection taking into account the criteria (or ‘trait preferences’) that are important to multiple and different users; facilitating access to and adoption of the new cultivars by farmers and other end-users through scaling up the supply of clean planting materials and ensuring equitable distribution of these through the ‘seed’ systems. • Inform the ongoing adaptive management of the project activities to ensure fair participation and decision-making by people in the affected communities. • Provide the baseline to evaluate, in conjunction with the endline, the impact of adoption of the new cultivars on households, and individuals within, in the target regions

    Anthropometric Characteristics, Body Composition and Somatotype in Elite Junior ITF Tennis Players from South America

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    Indexación: Scopus; Scielo.El objetivo de este estudio fue determinar las características antropométricas, composición corporal y somatotipo en tenistas varones elite juniors sudamericanos de la Federación Internacional de Tenis. Participaron 25 jugadores de 17,04 ± 1,05 años. La composición corporal se evaluó con el perfil restringido de 25 variables propuesto por Kerr en base al método pentacompartimental, el cual fracciona el cuerpo en 5 componentes (tejidos: muscular, adiposo, óseo, residual, y piel). El somatotipo se identificó con el método de Heath y Carter. Para la evaluación se utilizaron las normas propuestas por La Sociedad Internacional para el Avance de la Cineantropometría (ISAK) y el Grupo Español de Cineantropometría (GREC). El porcentaje de tejido muscular fue de 47,65 ± 2,83 %, tejido adiposo de 23,23 ± 3,56 %, y tejido óseo de 11,79 ± 1,56 % con un índice músculoóseo(IMO) de 4,09 ± 0,50. En cuanto al somatotipo se apreció una clasificación de tipo mesomorfo balanceado con valores de 2,5 ± 0,81 de endomorfia, 4,9 ± 0,66 de mesomorfia, y 2,7 ± 0,96 de ectomorfia. El grupo de tenistas presentó un predominio del componente mesomorfia con un equilibrio entre los componentes endomorfia y ectomorfia con características de composición corporal similares a las encontradas en la literatura. El presente estudio entrega datos referenciales sobre las características antropométricas en tenistas sudamericanos nivel elite categoría junior.The objective of the study was to determine the anthropometric characteristics, body composition and somatotype in male elite junior tennis players from the International Tennis Federation (ITF). Twenty five players of 17.04 ± 1.05 years participated. The body composition was evaluated with the restricted profile of 25 variables proposed by Kerr based on the pent compartmental method, which divided the body into 5 components (tissues: muscle, adipose, bone, residual, and skin). The somatotype was identified with the Heath and Carter method. For the evaluation, the norms proposed by the International Society for the Advancement of Cineanthropometry (ISAK) and the Spanish Group of Cineanthropometry (GREC) were used. The percentage of muscle tissue was 47.65 ± 2.83 %, adipose tissue of 23.23 ± 3.56 %, and bone tissue of 11.79 ± 1.56 % with a muscle-osseous index (IMO) of 4.09 ± 0.50. Regarding somatotype, a balanced mesomorphic classification was observed with values of 2.5 ± 0.81 of endomorphy, 4.9 ± 0.66 of mesomorphy, and 2.7 ± 0.96 of ectomorphy. The group of tennis players presented a predominance of the mesomorphy component with a balance between the components endomorphy and ectomorphy with characteristics of body composition similar to those found in the literature. The present study provides referential data on the anthropometric characteristics in South American tennis players elite junior category.https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-95022018000301095&lng=en&nrm=iso&tlng=e
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