92,528 research outputs found
Inverse systems of spectra and generalizations of a theorem of W.H. Lin
Full text linkIn this thesis we generalize a theorem of W. H. Lin.
Lin's results are concerned with the homotopy and cohomotopy
of an inverse system of spectra {P-k }. Using the quadratic
construction we construct an inverse system of spectra {P-k(E)}
We generalize Lin's results by studying the homotopy and cohomotopy
of {P-k(E)}
Rathalos treecko Lin & Zhao & Koh & Li 2022, comb. nov.
No full textRathalos treecko (Lin & Li, 2021) comb. nov. Anyphaena treecko Lin & Li, In: Lin et al., 2021: 101, figs 9A–C, 10A–B, 14I–J. Material examined. Holotype ♂ (IZCAS-Ar42404), China: Hainan, Changjiang County, Bawangling, Dongsizhan (19.0495°N, 109.1157°E), 23 April 2009, G. Tang leg. (examined). Paratypes. 2♀ (IZCAS-Ar42405–Ar42406), same data as holotype (examined). Diagnosis. See Lin et al. (2021). Description. See Lin et al. (2021). Distribution. China (Hainan). Comments. The cymbial apophysis, the triangular epigyne and the straight copulatory duct indicate that this species belongs to Rathalos Lin & Li, gen. nov. Thus, we transfer it from Anyphaena to Rathalos Lin & Li, gen. nov.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 201, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
Figure 33. Hyllus shanhonghani Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 33. Hyllus shanhonghani Lin & Li, sp. nov., paratype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CO—copulatory opening; FD—fertilization duct; H—hood; S—spermatheca. Scale bars = 0.3 mm.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 235, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
Figure 23. Paratus nanling Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 23. Paratus nanling Lin & Li, sp. nov., live specimens. A. Holotype male; B. Paratype female. Photos: Qianle Lu.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 226, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
Figure 55. Dolichognatha yue Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 55. Dolichognatha yue Lin & Li, sp. nov., live specimens. A. Holotype male; B. Paratype female. Photos: Qianle Lu.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 260, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses
Full text linkCitation: Jin, C., Hong, K. H., & Lin, C. D. (2016). Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses. Scientific Reports, 6, 11. doi:10.1038/srep38165We numerically demonstrate the generation of intense, low-divergence soft X-ray isolated attosecond pulses in a gas-filled hollow waveguide using synthesized few-cycle two-color laser waveforms. The waveform is a superposition of a fundamental and its second harmonic optimized such that highest harmonic yields are emitted from each atom. We then optimize the gas pressure and the length and radius of the waveguide such that bright coherent high-order harmonics with angular divergence smaller than 1 mrad are generated, for photon energy from the extreme ultraviolet to soft X-rays. By selecting a proper spectral range enhanced isolated attosecond pulses are generated. We study how dynamic phase matching caused by the interplay among waveguide mode, neutral atomic dispersion, and plasma effect is achieved at the optimal macroscopic conditions, by performing time-frequency analysis and by analyzing the evolution of the driving laser's electric field during the propagation. Our results, when combined with the on-going push of high-repetition-rate lasers (sub- to few MHz's) may eventually lead to the generation of high-flux, low-divergence soft X-ray tabletop isolated attosecond pulses for applications
Figure 50. Singaporemma shenzhen Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 50. Singaporemma shenzhen Lin & Li, sp. nov., habitus. A–B. Dorsal view; C–D. Ventral view; E–F. Lateral view. Scale bars = 0.3 mm.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 255, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
Figure 13. Cryptodrassus beijing Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 13. Cryptodrassus beijing Lin & Li, sp. nov., paratype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CD—copulatory duct; CO—copulatory opening; FD—fertilization duct; G—spermathecal gland; S—spermatheca. Scale bars = 0.1 mm.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 216, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
The Crystal Structures of CsCH₃SO₃, LiN₂H₅SO₄, and K₂Cr₂O₇
No full textX-ray diffraction experiments have been used to determine the structure of cesium methylsulfonate (CsCH₃SO₃), lithium hydrazinium sulfate (LiN₂H₅SO₄), above 160ºC and triclinic potassium dichromate (K₂Cr₂O₇). The solved CsCH₃SO₃ structure is compared with BaSO₄ and the CsCH₃SO₃⁻¹ ion stereochemistry is dicussed in terms of a current theory of bonding for such groups. The previously known structure of room temperature ferroelectric LiN₂H₅SO₄ has recieved additional refinement and a comparison is made with the structure determined above 160ºC. The symmetry and structure found for K₂Cr₂O₇ are compared with similar compounds and predictions are given for the yet unsolved structures of other K₂Cr₂O₇ phases. The first accurate data for the Cr₂O₇⁻² ion stereochemistry is presented. This ion is compared to similar ones, and the possibility of extending a bonding theory to such ions involving chromium is discussed.ThesisDoctor of Philosophy (PhD
Figure 12. Cryptodrassus beijing Lin & Li in Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia
No full textFigure 12. Cryptodrassus beijing Lin & Li, sp. nov., holotype male, left palp. A. Prolateral view; B. Ventral view; C. Retrolateral view. Arrows show apophyses. Abbreviations: C—conductor; E—embolus; SD—sperm duct; ST—subtegulum. Scale bars = 0.1 mm.Published as part of Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, pp. 198-270 in Zoological Systematics 47 (3) on page 215, DOI: 10.11865/zs.2022303, http://zenodo.org/record/717585
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