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Academic literature on the topic 'Hull-less barley'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Hull-less barley"

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Bhatty, R. S. "The Potential of Hull-less Barley." Cereal Chemistry Journal 76, no. 5 (September 1999): 589–99. http://dx.doi.org/10.1094/cchem.1999.76.5.589.

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Wei, Na, and Xiaofeng Yue. "Distribution of Core Root Microbiota of Tibetan Hulless Barley along an Altitudinal and Geographical Gradient in the Tibetan Plateau." Microorganisms 10, no. 9 (August 29, 2022): 1737. http://dx.doi.org/10.3390/microorganisms10091737.

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The Tibetan Plateau is regarded as the third pole of the earth and is one of the least explored places on the planet. Tibetan hull-less barley (Hordeum vulgare L. var. nudum) is the only cereal crop grown widely in the Tibetan Plateau as a staple food. Extensive and long-term cropping of barley may influence the soil’s chemical and biological properties, including microbial communities. However, microbiota associated with hull-less barley is largely unexplored. This study aimed to reveal the composition and diversity of bacterial and fungal communities associated with the hull-less barley at different elevations in the Tibetan Plateau. The core bacterial and fungal taxa of Tibetan hull-less barley were identified, with Bacillaceae, Blastocatellaceae, Comamonadaceae, Gemmatimonadaceae, Planococcaceae, Pyrinomonadaceae, Sphingomonadaceae, and Nitrospiraceae being the most abundant bacterial taxa and Ceratobasidiaceae, Chaetomiaceae, Cladosporiaceae, Didymellaceae, Entolomataceae, Microascaceae, Mortierellaceae, and Nectriaceae being the most abundant fungal taxa (relative abundance > 1%). Both bacterial and fungal diversities of hull-less barley were affected by altitude and soil properties such as total carbon, total nitrogen, and available phosphorus and potassium. Both bacterial and fungal diversities showed a significant negative correlation with altitude, indicating that the lower elevations provide a conducive environment for the survival and maintenance of hull-less barley-associated microbiota. Our results also suggest that the high altitude-specific microbial taxa may play an important role in the adaptation of the hull-less barley to the earth’s third pole.
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Johnson, J. W., and A. R. Brown. "Registration of Hull‐Less Winter Barley Germplasms." Crop Science 26, no. 3 (May 1986): 649–50. http://dx.doi.org/10.2135/cropsci1986.0011183x002600030055x.

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Bhatty, R. S., and B. G. Rossnagel. "Zero Amylose Lines of Hull-less Barley." Cereal Chemistry Journal 74, no. 2 (March 1997): 190–91. http://dx.doi.org/10.1094/cchem.1997.74.2.190.

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O’Donovan, J. T., G. W. Clayton, K. N. Harker, T. K. Turkington, and N. Z. Lupwayi. "Relationship between seeding rate and plant density of hulled and hull-less barley as influenced by seeding depth in a no-tillage system." Canadian Journal of Plant Science 89, no. 4 (July 1, 2009): 645–47. http://dx.doi.org/10.4141/cjps08203.

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Field experiments were conducted under no-tillage at three locations in Alberta, Canada over 3 yr to quantify the relationship between barley seeding rate and plant density in a hulled (AC Harper) and hull-less (Peregrine) variety seeded at two depths (2.5 and 6.25 cm). Regression analysis indicated that barley emergence was consistently better with the hulled variety and at the shallower depth. Predictive equations can help determine appropriate hulled and hull-less barley seeding rates required to obtain desired plant densities.Key words: Hordeum vulgare, hulled barley, hull-less barley, predictive equation.
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Zilic, Sladjana, Dejan Dodig, Marija Milasinovic-Seremesic, Vesna Kandic, Marija Kostadinovic, Slaven Prodanovic, and Djordje Savic. "Small grain cereals compared for dietary fibre and protein contents." Genetika 43, no. 2 (2011): 381–95. http://dx.doi.org/10.2298/gensr1102381z.

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The content of dietary fibres (cellulose, hemicellulose, lignin, NDF, ADF), tryptophan and proteins, as well as their quality index were determined in whole grains of bread and durum wheat, rye, hull-less barley and hull-less oat, each represented with four genotypes. In addition, content of ?-glucans in hull-less barley were determined. In average, hull-less barley and oat had the lowest content of hemicellulose (22.54 and 13.11% d.m., respectively), cellulose (1.36 and 1.41% d.m., respectively), lignin (0.98 and 0.49% d.m., respectively), as well as NDF (24.84 and 15.16% d.m., respectively) and ADF (2.30 and 2.04% d.m., respectively). In average, the highest content of hemicellulose was in durum wheat (33.47% d.m.), followed by rye (29.63% d.m.), and bread wheat (23.24% d.m.). Among tested hull-less barley genotypes the the content of ?-glucans ranged from 4.1% d.m. (IWHBON 97-18) to 5.6% d.m. (Apolon). The highest content of proteins (on average 15.65% d.m.) and tryptophan (on average 0.206% d.m.) was in hull-less oat. Hull-less barley had the highest protein quality index (1.48%) followed by bread and durum wheat and hull-less oat (IQ 1.35, 1.34 and 1.31%, respectively), and rye (IQ 0.93%). The results indicate that there is genetic diversity in content of dietary fibres and proteins among tested genotypes and that it should be possible to selectively breed for lines with high nutrition capacities, as well as, to improved diet requirements.
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Zheng, Xue Ling, Li Min Li, and Qi Wang. "The Properties of β-Glucans from Different Fractions of Hull-Less Barley." Advanced Materials Research 365 (October 2011): 338–41. http://dx.doi.org/10.4028/www.scientific.net/amr.365.338.

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Crude β-glucans were prepared from hull-less barley roller-milled fractions by aqueous sodium carbonate ( pH10). β-Glucan preparations from hull-less barley roller-milled fractions had high purity (90.88-95.04%). The Mw of β-glucan preparations from roller-milled fractions was ranging from 117,600 to 852,400 g/mol, For the same hull-less barley cultivar, β-glucan from flour had higher Mw than shorts and bran, and β-glucan preparations from bran had the lowest Mw.
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Yangcheng, Hanyu, Lingxiao Gong, Ying Zhang, and Jay-lin Jane. "Pysicochemical properties of Tibetan hull-less barley starch." Carbohydrate Polymers 137 (February 2016): 525–31. http://dx.doi.org/10.1016/j.carbpol.2015.10.061.

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Reidzane, Sanita, Ilze Gramatina, Ruta Galoburda, Vitalijs Komasilovs, Aleksejs Zacepins, Anastassia Bljahhina, Tatjana Kince, Anna Traksmaa, and Dace Klava. "Composition of Polysaccharides in Hull-Less Barley Sourdough Bread and Their Impact on Physical Properties of Bread." Foods 12, no. 1 (December 28, 2022): 155. http://dx.doi.org/10.3390/foods12010155.

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The complex of polysaccharides of the grain transforms during processing and modifies the physical and chemical characteristics of bread. The aim of the research was to characterize the changes of glucans, mannans and fructans in hull-less barley and wholegrain wheat breads fermented with spontaneous hull-less barley sourdough, germinated hull-less barley sourdough and yeast, as well as to analyze the impact of polysaccharides on the physical parameters of bread. By using the barley sourdoughs for wholegrain wheat bread dough fermentation, the specific volume and porosity was reduced; the hardness was not significantly increased, but the content of β-glucans was doubled. Principal component analysis indicates a higher content of β-glucans and a lower content of starch, total glucans, fructans and mannans for hull-less barley breads, but wholegrain wheat breads fermented with sourdoughs have a higher amount of starch, total glucans, fructans and mannans, and a lower content of β-glucans. The composition of polysaccharides was affected by the type of flour and fermentation method used.
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White, N. D. G., R. B. Hulasare, and D. S. Jayas. "Effects of storage conditions on quality loss of hull-less and hulled oats and barley." Canadian Journal of Plant Science 79, no. 4 (October 1, 1999): 475–82. http://dx.doi.org/10.4141/p98-115.

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Oat and barley cultivars were stored at various temperatures (10–30 °C) and relative humidities (35–80%) for one year to determine rates of seed deterioration. Two hulled oat cultivars (Robert and AC Marie), one hull-less oat cultivar (AC Belmont), one hulled barley cultivar (Bedford) and one hull-less barley cultivar (Condor) were stored. Experimental data were obtained at specified intervals for fat acidity values (FAV), germination and moisture content to determine the deterioration during storage. FAV were initially 69 mg KOH 100 g−1 dry seed for AC Marie, 43 for Robert, and 46 for AC Belmont oats. Values for barley were 8 mg KOH 100 g−1 dry seed for Bedford and 9 for Condor. The incidence of microfloral infection by Aspergillus glaucus group, Penicillium spp., Cladosporium spp., Rhizopus spp., and Alternaria alternata during the storage period was determined. Storage guidelines for barley and oat, based on grain moisture and temperature, were related to FAV increases of 1.5-fold for oats and two-fold for barley. Generally, hull-less cultivars of both crops stored as well as hulled cultivars at cool, dry conditions, but they deteriorated faster at high temperatures and high moisture contents. Key words: Oat, barley, hulled, hull-less, temperature, moisture, storage
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Dissertations / Theses on the topic "Hull-less barley"

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Martínez, Subirà Mariona. "Hull-less and coloured-grain barley as a source of valuable healthy bioactive compounds." Doctoral thesis, Universitat de Lleida, 2021. http://hdl.handle.net/10803/672377.

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Tot i que poques vegades es fa servir en els aliments, l'ordi està rebent un interès creixent com un gra saludable, per les seves propietats nutricionals. Es van estudiar a camp genotips d'ordi sense cobertes i de gra acolorit que es diferenciaven en una varietat de compostos bioactius valuosos i saludables, en diferents condicions ambientals i de temperatura. L'estrès per alta temperatura durant l'ompliment del gra va augmentar la concentració de compostos bioactius claus en el gra. S'ha de considerar la collita primerenca de grans immadurs per maximitzar la capacitat antioxidant. El 30% més extern de les fraccions perlades semblen la millor opció per explotar la capacitat antioxidant i l'alta composició fenòlica, mentre que els grans perlats poden proporcionar farines enriquides amb β-glucans. Les cobertes també són un valuós material saludable, especialment per a l'alimentació de remugants. L'ordi sense coberta i de gra morat ofereix noves vies per satisfer la creixent demanda de productes saludables, proporcionant un major contingut de fibra dietètica i compostos bioactius, una major capacitat antioxidant i un índex glucèmic estimat més baix que les farines comercials refinades i integrals de blat.
Aunque rara vez se usa en los alimentos, la cebada está recibiendo un interés creciente como un grano saludable, debido a sus propiedades nutricionales. Se estudiaron en campo genotipos de cebada sin cubiertas y de grano coloreado que se diferenciaban en una variedad de compuestos bioactivos valiosos y saludables, en diferentes condiciones ambientales y de temperatura. El estrés por alta temperatura durante el llenado del grano aumentó la concentración de compuestos bioactivos claves en el grano. Se debe considerar la cosecha temprana de granos inmaduros para maximizar la capacidad antioxidante. El 30% más externo de las fracciones perladas parecen la mejor opción para explotar la capacidad antioxidante y la alta composición fenólica, mientras que los granos perlados pueden proporcionar harinas enriquecidas con β-glucanos. Las cubiertas también son un valioso material saludable, especialmente para la alimentación de rumiantes. La cebada desnuda y de grano morado ofrece nuevas vías para satisfacer la creciente demanda de productos saludables, proporcionando un mayor contenido de fibra dietética y compuestos bioactivos, una mayor capacidad antioxidante y un índice glucémico estimado más bajo que las harinas comerciales refinadas e integrales de trigo.
Although rarely used in food, barley is receiving increasing interest as a healthy grain, due to its nutritional properties. Hull-less and coloured-grain barley genotypes differing in an array of valued and healthy bioactive compounds, were studied in the field under different temperature and environmental conditions. High temperature stress throughout grain filling increased concentration of key bioactive compounds in the grain. Early harvesting of non-mature grain should be considered as a way to maximize antioxidant capacity. The 30% outermost of the pearling fractions seem the best option to exploit antioxidant capacity and high phenolic composition, while pearled grains may provide β-glucan-enriched flours. Husks are also a valuable healthy material, particularly for ruminant feed. Hull-less and purple-grain barley offers new avenues to fulfil the increasing demand for healthy products, providing higher content of dietary fibre and bioactive compounds, greater antioxidant capacity and lower estimated glycemic index than commercial refined and whole wheat flours.
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Ramaswamy, C. M. "Effect of dietary enzyme supplementation on digestibility and growth performance of pigs fed hulled or hull-less barley-based diets, an in vivo and in vitro study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0004/MQ43506.pdf.

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Storsley, Joanne M. "Characterization of non-starch polysaccharides from hull-less barley." 2002. http://hdl.handle.net/1993/19691.

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Lim, Wai Li. "Regulation of reserve carbohydrates in hull-less barley grain." Thesis, 2018. http://hdl.handle.net/2440/113439.

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(1,3;1,4)-β-Glucans, which have many health benefits, represent the major cell wall component in barley endosperm. There have been a number of studies that have altered the amount of (1,3;1,4)-β-glucan in the grain, however, the effects of modifying (1,3;1,4)-β-glucan on various carbohydrate metabolic pathways and its impact on grain development have not previously been clearly defined. Here, we used transgenic grain with increased (1,3;1,4)-β-glucan and a (1,3;1,4)-β-glucanless (bgl) mutant (OUM125) supplied by Professor K. Sato (Okayama University), to investigate the link between carbohydrate metabolism and grain development in hull-less barley. Hull-less barley was investigated as it is more suitable for food use due to absence of maternal (husk) tissues. High (1,3;1,4)-β-glucan barley grain (cv Torrens) was successfully generated by over-expressing HvCslF6, via agrobacterium-mediated transformation. Transgenic grain had up to 70% more (1,3;1,4)-β-glucan than the wild type. Examination of developing transgenic grain revealed a large fluid filled cavity in the endosperm, which resulted in shrunken grain at maturity. The endosperm transfer region of the developing grain was ruptured by 10 days after pollination (DAP), which became more pronounced through development. Quantitative real-time PCR (QPCR) analysis uncovered genes related to cell wall, starch, sucrose and fructan biosynthesis that were differentially expressed across grain development. Starch metabolic genes were downregulated in the early storage phase and the fructan biosynthetic gene, 6-SFT, was upregulated during the later storage phase. Increased amounts of sucrose and fructan were found in the cavity and endosperm tissue of the transgenic grain. The link between altered sugar homeostasis, the large endosperm cavity and the poorly formed endosperm transfer region in transgenic grain was explored by immuno-histochemical microscopy. Cell walls in the endosperm transfer region were poorly formed and variations occurred in the abundance of mannan polysaccharides. Additionally, the development of both the subaleurone and aleurone layers were altered with regards to cell number, shape and position. To further understand the relationship between cell wall, starch and fructan metabolism in barley, transcript profiles of genes related to their metabolism were examined in the (1,3;1,4)- β-glucanless OUM125 mutant. Inactive CSLF6 synthase activity in OUM125 resulted in upregulation of the CslH1 gene from 19 DAP, resulting in traces of BG1 antibody labelling in the mutant pericarp. Other cell wall-related genes including CslF3, CslF7, CslF10, CesA2, CesA3 and Gsl2 were upregulated from 15 DAP in the mutant grain. Deposition of arabinoxylan, callose and cellulose was altered in the absence of (1,3;1,4)-β-glucan in the mutant endosperm. QPCR analysis identified changes in the expression of starch and fructan biosynthetic genes during the storage phase. At grain maturity, sucrose and fructan contents had increased, while the amount of starch remained unchanged. Research findings from this project provide fundamental knowledge about carbon partitioning in grain across development and suggest that small changes in polysaccharide synthesis and deposition can have significant effects on other metabolic processes important for correct grain development. While decreasing the amount of (1,3;1,4)-β-glucan in the barley endosperm had a low impact on grain morphology and carbon partitioning, significantly increasing the (1,3;1,4)-β-glucan content had major deleterious effects on a number of key processes.
Thesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Agriculture, Food and Wine, 2018
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Lagasse, Shelley Lynn. "Evaluation of hull-less barley flour and fiber-rich-fractions in Asian noodles." 2003. http://hdl.handle.net/1993/19946.

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Jacobs, Morrison Shawn. "Distribution and structural variation of non-starch polysaccharides in milling fractions of hull-less barley with variable amylose content and the subsequent evaluation of baking procedures for incorporation of barley roller milling fractions containing high levels of dietary fiber into bread." 2006. http://hdl.handle.net/1993/20765.

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Book chapters on the topic "Hull-less barley"

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Swanston, John Stuart, and Jill Elaine Middlefell-Williams. "Screening Hull-less Barley Mutants for Potential Use in Grain Whisky Distilling." In Advance in Barley Sciences, 159–68. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4682-4_14.

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Dexter, J. E., M. S. Izydorczyk, B. A. Marchylo, and L. M. Schlichting. "TEXTURE AND COLOUR OF PASTA CONTAINING MILL FRACTIONS FROM HULL-LESS BARLEY GENOTYPES WITH VARIABLE CONTENT OF AMYLOSE AND FIBRE." In Using Cereal Science and Technology for the Benefit of Consumers, 488–93. Elsevier, 2005. http://dx.doi.org/10.1533/9781845690632.12.488.

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Conference papers on the topic "Hull-less barley"

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Petrovska-Avramenko, Nataļja, Daina Karklina, and Ilga Gedrovica. "Water soluble vitamins B1, B2 and B3 in triticale and hull-less barley grains." In 11th Baltic Conference on Food Science and Technology “Food science and technology in a changing world”. Latvia University of Agriculture. Faculty of Food Technology., 2017. http://dx.doi.org/10.22616/foodbalt.2017.039.

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Xu, Xin, Jianmin Yang, Xin Li, and Haining Lu. "Wave Drift Forces on Three Barges Arranged Side by Side in Floatover Installation." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10737.

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Floatover is a new method for installing integrated topside of a spar platform. It has several obvious advantages such as less time and cost compared with derrick lifting. In general, the floatover installation consists of three procedures: firstly a single barge is used for long-distance transportation of the topside in order to get good stability; secondly two barges take place of the single barge for floatover installation near the operating site; finally the topside is transferred from the two barges to the spar hull and the installation is completed. Between the first and second procedures, the case occurs that the single transportation barge is sided left and right by two floatover barges in the second procedure with close proximity. This case is concerned by many designers and operators for the security problem brought by possible large relative motions and forces of the three barges in side by side configuration. The hydrodynamics of side-by-side barges are much more complex than that of a single barge in waves. In numerical simulation, it is a challenge to consider all effects including the hydrodynamic interactions, the shielding effects, the viscous effects and the wave resonance effect which has been observed in the gaps between the barges and has a significant impact on wave drift forces. In this paper, motion responses and wave drift forces were calculated in frequency domain for both the multi-body system and the single body. Far-field, middle-field and near-field method were all carried out to calculate wave drift forces. Numerical analysis was executed using potential flow code WAMIT. Corresponding model tests were also performed in the Deepwater Offshore Basin in Shanghai Jiao Tong University. Comparison between numerical and experimental results shows that numerical results agree well with the experiment and that middle-field method has better convergence than near-field method. The comparison between the multi-body system and single body shows that the hydrodynamic interactions (including wave shielding effect and Helmholtz resonance of water in the gaps) are remarkable and motion responses in the multi-body system are larger than single barge at some frequencies.
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Teng, YihJeng, and Jaime HuiChoo Tan. "CFD-Based Simulations of Hydrodynamic Behaviors of a Floating Barge Near Shore." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31480-ms.

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Abstract This paper presents Computational Fluid Dynamics (CFD)-based simulations of the hydrodynamic behaviors of a floating barge in shallow waters on an inclined seabed near shore. The hull hydrodynamic behaviors with respect to water depth are quantified by evaluation of the hydrodynamic coefficients, i.e., added mass, viscous damping coefficients, and current drag coefficients, which are required for the prediction of hull motion responses and mooring loads of the barge. CFD simulations are performed to predict the hull hydrodynamic coefficients with consideration of the actual seabed conditions, including water depth and varying bathymetry. Added mass and viscous damping coefficients are calculated using forced harmonic oscillations, while current drag coefficient is obtained using steady current flow simulation. These hydrodynamic coefficients are calculated for three of the six degrees of freedom (DOFs), i.e., surge, sway, and yaw of the hull. By considering three different nearshore water depths with a flat seabed and two inclined seabeds, the hull added mass, viscous damping, and current drag coefficients are quantified and compared against the coefficients in deepwater conditions. The hydrodynamic coefficients are found to be significantly affected by shallow water depths. Overall trends show exponential increase of added mass and viscous damping coefficients as water depth reduces. There is a further linear increase in the coefficients when the seabed bathymetry changes from flat to inclined, particularly when the water depth to hull draft ratio is less than 4.50. Similarly, current drag coefficients increase with decreasing water depths for flat seabed conditions, while for inclined seabed conditions, they may increase or decrease depending on the directions with respect to the shore and the current heading. This paper demonstrates the efficiency of CFD simulations in predicting a floating barge’s hydrodynamic behaviors in shallow water conditions, including varying nearshore bathymetry and viscous effects. The CFD simulation methodologies presented may be extended for the hydrodynamic behavior assessments of other nearshore floating structures such as Floating Offshore Liquefied Gas Terminals (FLGTs), Floating Storage and Regasification Units (FSRUs), and floating wind turbine structures.
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Tan, Jaime Hui Choo, Yih Jeng Teng, Allan Magee, Benedict Toong Heng Ly, and Shankar Bhat Aramanadka. "Vortex Induced Motion of TLP With Consideration of Appurtenances." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23420.

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Offshore floating platform configurations often consist of geometrically simple and symmetrical shapes which are made complicated by the presence of appurtenances such as helical strakes, tendon porches, steel catenary riser (SCR) porches, pipes, chains, fairleads and anodes on the surface of the hull. Previous studies mainly on spars show that these hull external features affect the Vortex Induced Motion (VIM) performance of the platform significantly. This is to be expected since VIM is controlled by the flow separation on the hull surface and the resulting vortex shedding patterns. Scale effects may also play a role in model tests for bare cylinders or hulls with bare cylindrical columns, whereas previous studies have shown less Reynolds dependence when appurtenances are modelled. This study investigates the effect of hull appurtenances on VIM of a multi-column floating platform, i.e. a Tension Leg Platform (TLP) designed for Southeast Asian environment. Significant difference in VIM behaviors is expected between spars and TLPs since the column aspect ratios are very different and TLPs do not have helical strakes that are commonly fitted on spars. Model testing and Computational Fluid Dynamics (CFD) simulation are used in this VIM study, with the former being the emphasis of this paper. Descriptions of the respective experimental and numerical methodologies are presented and the comparison of the results is made. Further work required to improve the model test set-up and the CFD simulation are suggested. From this study, it is shown that the effect of appurtenances on TLP VIM simulation is important and must be taken into account to obtain realistic results.
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Murray, John, Anil Sablok, Todd Demerchant, Lixin Xu, Tim Finnigan, and Shankar S. Bhat Aramanadka. "A Large Deck Extendable Draft Platform Design for Ultra-Deepwater in the Gulf of Mexico." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67310.

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A new delivery scheme based on an Extendable Draft Platform (EDP), designed for large fields in ultra-deepwater, offers potential benefits that minimize start-up costs and enhance overall economics. This paper describes an EDP design intended for deployment in water depth of 8,500 ft in a Gulf of Mexico environment. This deck design is one of the largest to date, using the EDP delivery method. The paper discusses design philosophy in detail, explaining the unique design features of the topsides for dockside commissioning, the deck connection system, and the riser systems and their integration. The topsides has process capacity of 200,000 bopd and about 475 mmcfd of gas. The deck also supports a drill rig with a hook capacity of 1,500 kips. The 40,000-ton topsides are 316 ft by 316 ft, supported by four 76-ft diameter columns. In addition to supporting the equipment, the topsides design supports 12,500 tons of riser tension. The complete process and drilling systems are assembled and commissioned dockside in less than 40 ft water depth. The entire system is floated on the deck barge, with the columns lowered through the deck and locked into position on site. Then the columns are de-ballasted, and the platform is raised to the operating draft. The top tensioned risers (TTRs) are supported by hydraulic tensioners. The mooring system, a major component of the lowering mechanism that deploys the EDP, comprises 12 lines composed of chain and polyester rope. These lines are pre-set and connected to the hull prior to raising the deck.
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Lee, S. J., M. H. Kim, D. H. Lee, and Y. S. Shin. "The Effects of Tank Sloshing on LNG Vessel Responses." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29665.

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The coupling and interactions between ship motion and inner-tank sloshing are investigated by a potential-viscous hybrid method in time domain. For the time domain simulation of vessel motion, the hydrodynamic coefficients and wave forces are obtained by a potential-theory-based 3D diffraction/radiation panel program in frequency domain. Then, the corresponding simulations of motions in time domain are carried out using the convolution-integral method. The liquid sloshing in a tank is simulated in time domain by a Navier-Stokes solver. A finite difference method with SURF scheme assuming the single-valued free surface profile is applied for the direct simulation of liquid sloshing. The computed sloshing forces and moments are then applied as external excitations to the ship motion. The calculated ship motion is in turn inputted as the excitation for liquid sloshing, which is repeated for the ensuing time steps. For comparison, we independently developed a 3D panel program for linear inner-fluid motions and it is coupled with the vessel motion program in the frequency domain. The developed computer programs are applied to a barge-type FPSO hull equipped with two partially filled tanks. The time-domain simulation results show reasonably good agreement when compared with MARIN’s experimental results. The frequency-domain results qualitatively reproduce the trend of coupling effects but the peaks are in general over-predicted. It is seen that the coupling effects on roll motions appreciably change with filling level. The most pronounced coupling effects on roll motions are the shift or split of peak frequencies. The pitch motions are much less influenced by the inner-fluid motion compared to roll motions.
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You might also be interested in the extended bibliographies on the topic 'Hull-less barley' for particular source types:
Journal articles
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