Results 211 to 220 of about 82,775 (258)
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Synthesis of protodolomite from coral reef sand
Food Chemistry, 2006Abstract Protodolomite (calcium carbonate, PD) is widely used in calcium (Ca) and magnesium (Mg) nutritional supplements because it is rich in Ca (>20%) and Mg (>10%). Synthesis of PD usually involves the use of a NaCl solution with Ca 2+ and Mg 2+ . In this study, we synthesized PD from coral reef sand (CRS) and magnesium chloride (MgCl 2 ). First,
Hiroyuki Fujimura +4 more
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Acoustic properties of coral sands, Waikiki, Hawaii
The Journal of the Acoustical Society of America, 2004An in situ experimental study of variations of compressional wave speed and attenuation with depth in natural coral sands has been made offshore of Oahu, Hawaii. In situ data were collected at a center frequency of 7.5 kHz. Compressional wave speed averages around 1620 m/s and attenuation (expressed as Qp−1, the reciprocal of the quality factor ...
S. S. Fu +4 more
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Fractional order creep model for coral sand
Mechanics of Time-Dependent Materials, 2018The creep of coral sand is a critical factor that needs to be considered in geotechnical design of engineering facilities along coastal areas. In this study, a new fractional order creep model for coral sand is developed by extending the previous work on fractional (visco)plasticity.
Yifei Sun, Cheng Chen
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Coral Reef Sand Data for Training SandE
This repository contains all the training data used to train the Sediment Analysis Neural-network Data-engine (SAND-e). SAND-e was created as part of the PhD thesis of G. William M. Harrison under the supervision of Ken Johnson and Willem Renema and the master’s thesis of Teigan Collins under the supervision of Ken Johnson and Nadia Santodomingo with ...Harrison, George William +4 more
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Elevation of clams in coral sand
1966(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Comparative study of coral sand and silica sand in creep under general stress states
Canadian Geotechnical Journal, 2017Coral sand has individual characteristics that differ from silica sand, such as creep behavior that is always attributed to particle crushing under high stress states. To understand the creep behavior of coral sand under general stress levels, three series of comparative triaxial tests relevant to the deviator stress, confining pressure, and relative ...
Yaru Lv +4 more
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Settlement Reliability Analysis of Gravity Foundation in Coral Sands
2011 International Conference on Computational and Information Sciences, 2011Settlement calculation is an important work in design of foundation of building structure. In this paper, the reliability method is used to analyze the settlement of gravity foundation in coral sands. By calculating settlement using secant modulus method, performance function of settlement reliability analysis of foundation is established. JC method is
Zhongqing Cheng, Ping Yang, Haibo Jiang
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Microbial pathogen removal from domestic effluent using coral sand in Kiribati
Journal of Applied Microbiology, 2020Infiltration experiments aimed to show the effectivity of coral sand to remove micro-organisms in septic tank wastewater treatment system, in South Tarawa, Kiribati.Laboratory experiments evaluated effective microbial removal properties of a packed bed of coral beach sand conditioned with domestic effluent.
B. Humphries +5 more
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Construction and Building Materials, 2018
Abstract The present study investigates the chloride ingress and binding behaviors of coral waste filler-coral waste sand marine mortar and the influence imposed by metakaolin (MK) addition. The mortars were cured for 4 months and followed by exposing to 0.5 M sodium chloride solution for 45 days.
Yunyao Wang +3 more
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Abstract The present study investigates the chloride ingress and binding behaviors of coral waste filler-coral waste sand marine mortar and the influence imposed by metakaolin (MK) addition. The mortars were cured for 4 months and followed by exposing to 0.5 M sodium chloride solution for 45 days.
Yunyao Wang +3 more
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Tunnelling and Underground Space Technology
Coral sand, as a geological material for foundation filling, is widely used for reclamation projects in coral reef areas. The coral sand is characterized by a wide grain size distribution. A series of centrifuge shaking table tests were conducted to explore the seismic response of a shallow buried underground structure in saturated coral sand and coral
Zhongxiang Zhang +3 more
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Coral sand, as a geological material for foundation filling, is widely used for reclamation projects in coral reef areas. The coral sand is characterized by a wide grain size distribution. A series of centrifuge shaking table tests were conducted to explore the seismic response of a shallow buried underground structure in saturated coral sand and coral
Zhongxiang Zhang +3 more
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