1,250 research outputs found
Robust Ni/WC superhydrophobic surfaces by electrodeposition
No full textSuperhydrophobic, water repellent surfaces have attracted much attention but poor surface mechanical properties have limited their wider practical application. Robust surfaces based on nickel-tungsten carbide composite coatings have been electrodeposited. The surfaces showed superhydrophobicity after being modified by stearic acid. The maximum contact angle of water was 164.3 degrees with a sliding angle close to zero degree. By controlling deposition conditions, versatile coatings have been produced and the effects of morphology on wettability are discussed. Coating texture has been analyzed by X-ray diffraction. The surfaces showed excellent abrasion resistance and water-repellence
The littoral benthon of Lake Orta after liming
No full textThe aim of this research was to analyse the effects of liming on the littoral benthonic fauna in the Phragmites communis macrophyte bank. Such effects were analysed on the basis of differences in faunal composition between a stressed and restored lake (Lake Orta) and an unaffected lake (Lake Mergozzo). The different chemical conditions (low pH, low alkalinity, high nitrates, toxic metals) are considered responsible for the impoverishment of the Lake Orta fauna. The liming has not yet restored it to its original condition. -Author
Liming as Black Methodology: Black Early Career Scholars Engage Black Humanity in Research
No full textThis paper builds on decolonizing educational research discourse. Rich, generative, and diverse forms of knowledge production, includes that of the Caribbean. Specifically, the paper uses the Black Caribbean method of Liming, which is an indigenous methodology. The paper illustrates how educational research practices can be enriched by Black and Caribbean ways of thinking, being and knowing. This diversity would support a pivot from Western methods. The author employs reflections from her dissertation writing
and research experience, while highlighting the dire need to incorporate and institutionalize methods from Black scholars, Black communities, and the Global South. Via this paper, I illustrate how Liming has allowed for greater discourse, and learning with the diverse communities served. Liming’s contributions are beneficial in educational research as well its utility for other areas of research. Lastly, this paper processes the idea that Caribbean, African-centric, and Black, knowledge-making such as Liming are liberatory
sj-docx-1-sco-10.1177_2050313X231197322 – Supplemental material for Eosinophilia in a patient with aggressive systemic mastocytosis harboring a KIT D816V mutation: A case report
No full textSupplemental material, sj-docx-1-sco-10.1177_2050313X231197322 for Eosinophilia in a patient with aggressive systemic mastocytosis harboring a KIT D816V mutation: A case report by Lihong Cao, Hongyan Tong, Xing Liu, Qi Pan, Yingqing Xu, Jin Lai, Wenjun Zheng, Jian Huang, Zhaoming Wang, Shengli Ye, Liming Zhang, Jiayue Qin and Jie Jin in SAGE Open Medical Case Reports</p
Er shi shi ji Zhongguo de mei shu tao ci cong ye zhe
No full textThe people making ceramics were considered as "artisans" (gongjiang) in traditional China. Classifying ceramics as an "art" (meishu) and potters as "artists", was a new development in the twentieth century. This thesis examines this process by comparing the experience of artisans from Jingdezhen, Jiangxi province, in which the imperial kilns (yuyao) were located, and from Shiwan, Guangdong province, where only civilian kilns (minyao) were found.This thesis argues their different historical background led to the differences in their different experience. The reputation of Jingdezhen's world famous "imperial kilns" lasted into the twentieth century, and so, as Jingdezhen was subject to industrial development and technological upgrading, Jingdezhen's craftsmen came from the new technical schools which were founded to revive the ceramic industry. In Shiwan, by contrast, apprenticeship to reputable craftsmen continued to serve as artistic credential, and was made use of by patrons, commentators and publicists in promoting Shiwan's artistic tradition.黎麗明.Adviser: David Faure.Source: Dissertation Abstracts International, Volume: 73-03, Section: A, page: .Thesis (Ph.D.)--Chinese University of Hong Kong, 2010.Includes bibliographical references (p. 178-192)Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web.Abstracts in Chinese and English.Li Liming
Clay mineral records for the last two glaciations at the East Siberian continental margin
No full textFour gravity sediment cores used for clay mineral analysis were recovered from the East Siberian continental margin. Core M04 (172.199W,75.982N ), with a length of 560 cm, was recovered from the Chukchi Basin during the fifth Chinese National Arctic Research Expedition (CHINARE) in 2012; core C22 (154.581W, 77.164N ), with a length of 200 cm, from the Northwind Ridge during the sixth CHINARE in 2014; and cores E23 (179.715E, 77.060N ) and P13 (159.865W, 77.991N ), with lengths of 354 cm and 246 cm from the southern Mendeleev Ridge and Chukchi Plateau, respectively, during the seventh CHINARE in 2017. The fine-grained fractions (<63 μm) of each sample were retained for clay mineral analysis. Decalcification and organic material removal were performed at room temperature with 1 M HCl and 30% H2O2, respectively. Clay fractions (<2 μm) were determined using Stokes’ law (Liu et al., 2010 and references therein). Each sample was oriented by wet smearing onto two glass slides before being air-dried. One of the slides was used for qualitative identification of clay minerals, whereas the other was solvated with ethylene glycol in an under-pressurized desiccator for at least 36 h at 35 ℃. Clay minerals were then measured by a PANalytical diffractometer, scanning from 3°–35° 2θ with a step of 0.0167° 2θ, at the KLSG. Semi-quantitative estimates of peak areas for the main clay minerals were carried out on the ethylene-glycol solvated curve using MDI Jade 6.0 software, and the percentage of clay minerals was calculated using Biscaye’s (1965) weighting factors. The 17Å and 10Å peaks were used for quantification of smectite and illite, respectively. Kaolinite (3.58Å) and chlorite (3.54Å) peaks were identified to calculate their proportional percentage from the 7Å kaolinite + chlorite peak (Biscaye, 1965). Analytical precision was checked using 15 replicates with a standard deviation of <3%
Estimating magic numbers larger than 126 by Fermi-Yang Liming method
No full textThe Fermi-Yang Liming method is followed and developed to estimate new magic numbers in nuclei with a Woods-Saxon density function. The calculated results predict that the magic number next to 126 should be around 184 and 258.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)0ARTICLE4447-4503
Planktic foraminiferal d18O of MD10-3340
No full textThe datasets contains foraminiferal oxygen isotope (δ¹⁸O) records of MD10-3340, retrieved in the Halmahera Sea. The records of G. ruber (250 to 350 µm) and P. obliquiloculata (350 to 440 µm) were measured at the State Key Laboratory of Marine Geology, Tongji University, Shanghai, China with a Finnigan-MAT253 mass spectrometer. Conversion to the international Pee Dee belemnite scale was performed using NBS19 standard, and the long-term variability of δ¹⁸O is better than 0.07 per mil. The records cover the last ~235 ka
The byline: thoughts on the distribution of author ranks in multiauthored papers
No full textWe analyze the multi-authorship matrix M, defined as the matrix where a cell M(j,k) denotes the number of times authors with j publications are ranked as kth author of an article. We prove that if the distribution of the number of authors per paper follows a power law, then the author rank distribution is approximately equal to this power law (more precisely, equal in Landau's big 0 sense). We further determine the author rank distribution in the case authors can be characterized through a seed number, this is the probability of preceding a fixed author in the byline of an article. Such a seed is determined for alphabetical ranking of authors using the standard western
alphabet
Dynamics and Asymptotic Behaviors of Biochemical Networks
No full textThe purpose of this dissertation is to study the dynamics and asymptotic behaviors of biochemical networks using a “modular” approach. New mathematics is motivated and developed to analyze modules in terms of the number of steady states and the stability of the steady states. One of the main contributions of the thesis is to extend Hirsch’s generic convergence result from monotone systems to systems “close” to monotone using geometric singular perturbation theory. A monotone system is a dynamical system for which the comparison principle holds, that is, “bigger” initial states lead to “bigger” future states. In monotone systems, every net feedback loop is positive. On the other hand, negative feedback loops are important features of many systems, since they are required for adaptation and precision. We show that, provided that these negative loops act at a comparatively fast time scale, the generic convergence property still holds. This is an appealing result, which suggests that monotonicity has broader implications than previously thought. One particular application of great interest is that of double phosphorylation dephosphorylation cycles. Other recurring modules in biochemica
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