5,895 research outputs found
Performing Piano Works Inspired by Folk Dances: “Wu Kui” and “My Spirit Is Dancing”
No full textThe piano work "Wu Kui" (1983) was composed by Chinese composer Zhou Long, inspired by the Manchu folk dance "Da Wu Kui," and "My Spirit is Dancing for Solo Piano" (2010) was composed by Malaysian composer Yii Kah Hoe, inspired by the Balinese baris dance. Both piano works are based on folk dances and use Western compositional techniques to innovate the language of folk music. The author takes these two piano works inspired by folk dances and analyses the performance difficulties of these two to enable the performer to better interpret the piano works and make the performance more convincing
Hydroxy-terminated polyether binders for composite rocket propellants
No full textPropellants based on cross-linked Hydroxy Terminated PolyEther (HTPE) binders are
being used as alternatives to Hydroxy Terminated PolyButadiene (HTPB) compositions.
HTPE propellants have similar mechanical properties to HTPB propellants but they give
a less severe response in ‘slow cook-off’ tests for IM compliance. A literature review is
presented on the development and properties of HTPE propellants in an attempt to place
them in relation to recent trends in Insensitive Munitions. To gain a better understanding
of the behaviour of HTPE propellants an HTPE pre-polymer and a range of binder
network samples with different NCO/OH equivalence ratios, with and without
plasticizer, have been synthesised and characterised by a range of techniques. The
thermal decomposition of the HTPE binder network and propellant samples were also
studied. Desmodur N-3200 was used as a curing agent and n-BuNENA as an energetic
plasticizer. Similar analyses were performed on analogous HTPB pre-polymer and
binder network samples and the results were compared with those obtained for the
corresponding HTPE samples. Two kinds of HTPE propellant were manufactured
containing HTPE pre-polymer, n-BuNENA, 2NDPA and either AP or AP+PSAN as
oxidiser. Also HTPB propellant was prepared. Small cook-off test vehicles (SCTV)
were filled with HTPE and HTPB propellants and slow cook-off tests were performed.
In contrast to HTPB binders, which become harder during slow heating, it was found
that the HTPE binders soften under the same conditions. This behaviour is possibly due
to chain scission of the soft and hard segments of the HTPE polymer matrix. Thermooxidative
processes and reactions of the energetic plasticizer decomposition products
are believed to be the responsible for the scission of the polymeric matrix. From the
binder characterisation and slow cook-off results it is concluded that there is a relation
between the degree of polymeric matrix scission during slow heating and the violence
of the response at the point of self ignition. This underlies the main difference between
HTPB and HTPE propellants in slow cook-off. While HTPB compositions become
harder and more brittle, HTPE propellants become softer and have a lower surface area
at the self ignition point
Correction to: Visible lattice points along curves
No full textThe article “Visible lattice points along curves”, written by Kui Liu and Xianchang Meng, was originally published electronically on the publisher’s internet portal on 27 July 2020 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 9 July 2021 to © The Author(s) 2020 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0
Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20
No full textWei, Jihua, Chen, Xuexia, Ge, Yichao, Yin, Qizhao, Ma, Yihan, Zhang, Zunjing, Wu, Xiaodan, Hong, Kui, Wu, Bin (2023): Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20. Phytochemistry (113479) 205: 1-11, DOI: 10.1016/j.phytochem.2022.113479, URL: http://dx.doi.org/10.1016/j.phytochem.2022.11347
Figs 13–14 in Two new species of the genus Gieysztoria (Rhabdocoela: Dalyelliidae) from China
No full textFigs 13–14. Gieysztoria huizhouensis Zhang, Wu & Wang, sp. nov., stylet. Scale bars = 20 μm.Published as part of Zhang, Hang, Li, Yi-Kui, Wu, Cheng-Chen & Wang, An-Tai, 2014, Two new species of the genus Gieysztoria (Rhabdocoela: Dalyelliidae) from China, pp. 485-495 in Zoological Systematics 39 (4) on page 491, DOI: 10.11865/zs.20140402, http://zenodo.org/record/461738
Two new species of the genus Gieysztoria (Rhabdocoela: Dalyelliidae) from China
No full textZhang, Hang, Li, Yi-Kui, Wu, Cheng-Chen, Wang, An-Tai (2014): Two new species of the genus Gieysztoria (Rhabdocoela: Dalyelliidae) from China. Zoological Systematics 39 (4): 485-495, DOI: 10.11865/zs.2014040
Fig. 8 in Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20
No full textFig. 8. Experimental and calculated ECD spectra of compounds 1–7.Published as part of Wei, Jihua, Chen, Xuexia, Ge, Yichao, Yin, Qizhao, Ma, Yihan, Zhang, Zunjing, Wu, Xiaodan, Hong, Kui & Wu, Bin, 2023, Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20, pp. 1-11 in Phytochemistry (113479) 205 on page 8, DOI: 10.1016/j.phytochem.2022.113479, http://zenodo.org/record/823076
Fig. 5 in Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20
No full textFig. 5. Plausible biosynthetic pathway of compounds 1–2 and 4.Published as part of Wei, Jihua, Chen, Xuexia, Ge, Yichao, Yin, Qizhao, Ma, Yihan, Zhang, Zunjing, Wu, Xiaodan, Hong, Kui & Wu, Bin, 2023, Cytotoxic shornephines and asterresins from the hydrothermal vent associated fungus Aspergillus terreus CXX-158-20, pp. 1-11 in Phytochemistry (113479) 205 on page 5, DOI: 10.1016/j.phytochem.2022.113479, http://zenodo.org/record/823076
Data for: Quantitative stratigraphic correlation of the Lower Triassic in South China based on conodont unitary associations
No full textWe collected conodont records from 28 sections in South China, which span the period from from latest Permian to earliest Middle Triassic. In total, 2049 occurrences of 124 conodont species are collated
Fu hun he re ba- nie- lin jin shu bo li zhong de xuan jie xian fen jie
No full textWu, Zhenduo = 負混合熱鈀-鎳-磷金屬玻璃中的旋節線分解 / 吳楨舵.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references.Abstracts also in Chinese.Title from PDF title page (viewed on 09, December, 2016).Wu, Zhenduo = Fu hun he re ba- nie- lin jin shu bo li zhong de xuan jie xian fen jie / Wu Zhenduo
- …
