197,390 research outputs found
Chao Phraya Monthly Streamflow Reconstruction
No full textData and code to reproduce the paper:
Nguyen, H. T. T., Galelli, S., Xu, C., & Buckley, B. M. (2022). Droughts, Pluvials, and Wet Season Timing across the Chao Phraya River Basin: A 254-Year Monthly Reconstruction from Tree Rings and δ18O. Geophysical Research Letters. https://doi.org/10.1029/2022GL10044
Letter from A. F. Potter to John H. Page
No full textLetter from A. F. Potter to John H. Page referring his request to build a railway to the District Forester at Albuquerque, New Mexico
Vulnerability and Resilience of the Bang Luang Community to Flooding from the Chao Phraya River
No full textFlooding is a natural phenomenon and in the past Thai people have adapted to flood events. However over the years land degradation, deforestation and bad urban practices have exacerbated the impact of flood disasters. This study of flood management in Thailand shows how human activities and interventions have impacted on the river basin system. This research focuses on the vulnerability to flood hazard of the people living or working near the Chao Phraya River. The case study is of the community living or working in the proximity of Wat Bang Luang (Bang Luang Temple) of the Pathum Thani Province, Thailand.
This research explores the capacity of communities to live with or cope with floods. Their adaptations to changes in flood regimes will depend on several factors: political (especially when Thailand has a long history of preoccupation with engineering and technological solutions as the main approach to disaster response), economic, ecological (human modification to flood plains), social (kin-based networks) and cultural factors.
The data collected from the target community showed a power struggle between Thai culture and the dominant hazard management paradigm. This research put a human face on natural disaster and looked at the issue of flooding from the experiences of ordinary people. The findings showed that some members of the community are resilient while others are passive and are more vulnerable to floods. However, it is important not to label any individual or group as either vulnerable or resilient as people can be both at the same time and policy makers need to build on the strengths, rather than focus on the weaknesses and on offering emergency relief
Polly H. Carder Collection on George F. Root
No full textGeorge Frederick Root (1820-1895) was an American songwriter and music educator. He is perhaps best known for his song "The Battle Cry of Freedom," which was written and rose to popularity during the U.S. Civil War. The Polly H. Carder Collection on George F. Root contains original published scores and songbooks from the period 1852-1907 and photocopied scores collected by Polly H. Carder, author of the book George F. Root, Civil War Songwriter: A Biography. The collection also contains a short article, "The Last Days of George F. Root," written by Root's daughter, Clara Louise Burnham
Inhibition of return at repeatedly stimulated locations lasts longer than at novel locations
No full textOptical micrographs of olivine + melt samples deformed in torsion
No full textAn excel spreadsheet summarizes the experimental conditions of the samples included in this data set, and also includes figures that plot the azimuthally averaged, normalized melt fraction vs. the radius for the starting material and each experimental condition.
For each sample (with the exception of experiment PT0767), the following data are included.
1. Tiles of 8-bit gray-scale optical microscopic images of 1000x1000 pixels. 1 pixel = 0.32 micron. There is ~20% overlapping between each tile.
2. A txt file registering the relative coordinates of each tile.
3. A black and white image with melt being white processed from the tiles and assembled by their coordinates. 1 pixel = 0.32 micron.
4. A mosaic microscopic image with lower resolution. In the file name, "OL" stands for optical light. 1 pixel = 1.3 micron.
For experiment PT0767, no high resolution images were obtained for this sample. For experiment PT0817, two files with relative coordinates exist, with one overlapping row that can be used to stitch the two halves together.This data set contains high-resolution micrographs of the transverse sections of partially molten samples deformed in torsion. These micrographs present the distribution of melt induced by deformation, which is a test of the melt segregation processes predicted by the two-phase flow theory incorporating viscous anisotropy.NSFQi, Chao; Kohlstedt, David L. (2018). Optical micrographs of olivine + melt samples deformed in torsion. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/D67D5M
Developing a constitutive approach for peats from laboratory data
Get PDFRecent research effort carried out at Delft University of Technology to improve the experimental knowledge and develop a comprehensive modelling approach for fibrous organic soils is summarised. Experimental results and numerical analyses are combined to discuss some contradictory results which have delayed advanced characterisation of peats. Part of the apparent inconsistencies commonly found in the literature is due to the influence of the testing apparatus, including rough platens and membrane restraint, which inhibit homogenous deformation modes and alter the response of the samples compared to the true material behaviour. The consequences of non-homogenous deformation are particularly relevant on peats due to the unique combination of their exceptionally low stiffness and high strength. An elastic–plastic constitutive framework was developed starting from repeatable reconstituted samples of peats, taking care of reducing end restraint to a large extent in the experimental setup. The results suggested that an elastic–plastic model for peats should include a non-associated flow rule and a mixed volumetric–deviatoric hardening law. The role played by different fibres at the laboratory scale is discussed, and the additional reinforcement offered by bigger fibres on the observed behaviour of natural peats is addressed.Geo-engineerin
Trigomphus carus Chao 1954
No full textTrigomphus carus Chao 1954 Figs. 12 (a–f) Trigomphus carus Chao 1954: Chao (1954: 34–36, figs 131–139, Fujian); Sui & Sun (1984: 53–55, figs 39a–e, Fujian); Chao (1990: 225–226, figs 1–9, Fujian); Zhang (1999: 267–268, figs 24.99a–e, Fujian); Hua (2000: 12, Fujian). Specimens: 1 ♂, Chebaling, 12 v 1994, leg. KW; 1 ♂, Chebaling (No. 21858), 26 v 2002, coll. ZX. Remarks: This species is recorded from Guangdong for the first time. A male is illustrated in Figs. 12a–f. Chao (1953a: 383) lists just the name " Trigomphus needhami sp. nov. " from Fujian but Chao (1954) ultimately descirbes this taxon as Trigomphus carus in his full description. Distribution: China (Fujian & Guangdong).Published as part of Wilson, Keith Duncan Peter & Xu, Zaifu, 2009, Gomphidae of Guangdong & Hong Kong, China (Odonata: Anisoptera) 2177, pp. 1-62 in Zootaxa 2177 on page 2
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