262,702 research outputs found
Evidence for erbium-erbium energy migration in erbium(III) bis(perfluoro-p-tolyl)phosphinate
No full textCopyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in Applied Physics Letters 92, 103303 (2008) and may be found at
Additions to the moss flora of Endau Rompin National Park, Johore State, peninsular Malaysia
No full textIn a recent survey of the Endau Rompin National Park (ERNP) in Johore State, 81 species and 4 varieties of mosses were documented. This increases the previous count from 62 species and 3 varieties of mosses in ERNP to 111 species and 5 varieties in total. Of these, 30 species are new records for Johore State. Rhaphidostichum bunodicarpum and Trichosteleum stigmosum are two species new to Peninsular Malaysia. Thuidium assimile is a new record for West Malesia. A new combination, Papillidiopsis aquaticum (Dix.) Boon-Chuan Ho & B.C. Tan is proposed. In terms of species composition, the pan-tropical families of Calymperaceae, Fissidentaceae, Leucobryaceae and Sematophyllaceae predominate the moss flora of ERNP
tan n tan v
No full texttan n1. To convert skin or hide into leather b. To treat (fishing nets, sails, 1601-1905Used IUsed I and SupNot usedonly tan n is used in DNE, not tan
Seri Buku Saku Tan Malaka Bapak republik Yang Dilupakan
No full textTan melukis revolusi indonesia dengan bergelora. Sukarno pernah menulis testamen politik yang berisi wasiat kekuasaan kepada empat nama salah satunya Tan Malaka--apabila Bung Karno dn Bung Hatta mati atau ditangkap "...jika saya tiada berdaya lagi, maka saya akan menyerahkan pimpinan revolusi kepada seorang yang telah mahir dalam gerakan revolusioner, tan Malaka' kata Sukarno. Tapi di masa pemerintahan Sukarno pula Tan dipenjara dua setengah tahun tanpa pengadilan.xxi; 212 hal Ilus 11 cmX16 c
Tan Malaka, Gerakan Kiri, Dan Revolusi Indonesia
No full textJudul Asli : Verguisd en vergeten; Tan Malaka, de linkse beweging en de Indonesische Revolutie, 1945-1949xx, 378 p. : Il.; 24 c
Part of the global seawater delta oxygen-18 database from reference Tan 1996
No full textPart of the global seawater delta oxygen-18 database from reference Tan 199
Photoinduced C—C Bond Cleavage and Oxidation of Cycloketoxime Esters
No full textA novel structural reorganization of cycloketoxime esters beyond the traditional Beckmann rearrangement process has been established to build cyano-containing ketones in the presence of photocatalyst. This novel transformation is remarkable with selective C—C bond cleavage and an oxidation process enabled by DMSO used as the solvent, oxidant, and oxygen source avoiding acid, base and toxic cyanide salts as the cyano source. Further applications in late-stage modification of complex and chiral molecules have also been reported
Toward the Synthesis of the Fungal Metabolite (-)-TAN-2483B
No full textIn the search of chemical species with potential therapeutic biological activity, synthetic chemists have looked to nature for inspiration. Molecules built by biological machinery often have structures predisposed for biological interaction. (-)-TAN-2483B and the related compounds (-)-TAN-2483A, and waol A are fungal metabolites that display biological activity in kinase inhibition and parathyroid-induced bone resorption. Though total syntheses of (-)-TAN-2483A and waol A have been achieved, the established methodology does not afford access to (-)-TAN-2483B owing to the unique relative configuration about the ring system. Derivatives of D-galactal have been synthesised, and functionalised at the C-1 and C-2 positions, laying the groundwork for a route to (-)-TAN-2483B and analogues. Using D-galactal derivatives is advantageous as it circumvents some difficult transformations in the existing method for analogue synthesis. The functionalities installed were halide and formyl groups at the C-2 position, and acetylenes at the C-1 position. The synthesis of 2-haloglycals from tri-O-acetyl-D-galactal using N-halosuccinimides was achieved in 32% and <37% for the bromo- and iodo- variants respectively. Vilsmeier-Haack formylation was explored using per-benzylated and per-acetylated galactals as substrates. Formylation of the per-benzylated species was achieved in 78% yield in accordance with literature values. Vilsmeier-Haack formylation on the per-acetylated galactal has not been reported and the glycal was found to be a poor substrate for the formylation. Theories regarding the incompatibility of the per-acetylated species with Vilsmeier-Haack conditions were developed. Ferrier-type alkynylation of the 2-halo/formylglycals was explored, with yields up to 17% and 13% for the bromo- and iodo- species (unoptimised), and 7% for 2-formylglycal (after optimisation studies). The resulting 1-ethynyl-2-formyl/halo-2,3-unsaturated pyrans could be potential intermediates en route to the furanone ring of the target compound.</p
Data appendix for: Holocene relative sea-level histories of tropical islands
No full text This is the data appendix for the PhD thesis:
Tan, F. (2023). Holocene relative sea-level histories of tropical islands.
The dataset contains nine excel files. Tables A6 to A10 are supporting tables for appendix A; tables B4 to B5 are are supporting tables for appendix B; tables C1 to C2 are are supporting tables for appendix C.</p
Cycloptiloides bimaculatus Tan, Japir & Chung 2021
No full textCycloptiloides bimaculatus Tan, Japir & Chung, 2021 (Figs 1A, 2) Cycloptiloides bimaculata Tan et al., 2021: 410 Cycloptiloides bimaculatus — Tan et al. 2022b: 600 Specimen examined. Holotype: EAST MALAYSIA • ♂; Sabah State, Sandakan, Sepilok, Rainforest Discovery Centre; N5.87580, E117.94299, 39.1± 5.4 m.a.s.l.; 9 January 2019, 19h11; on the leaf litter; coll. M.K. Tan, R. Japir, M. Binti & J.L. Yukang; SDK.19.20 (FRC) Additional specimens examined. EAST MALAYSIA • 1♂; Sabah State, Sandakan, Sepilok, Rainforest Discovery Centre; N5.87554, E117.94135, 54.5± 6.1 m.a.s.l.; 11 May 2022, 20h58; on the leaf litter; coll. M.K. Tan & T. Robillard; SBH.22.19 (FRC) • 1♂; Sabah State, Sandakan, Sepilok, Rainforest Discovery Centre; N5.87416, E117.93786, 89.2± 6.8 m.a.s.l.; 18 May 2022, 20h07; on the leaf litter; coll. M.K. Tan & T. Robillard; SBH.22.152 (MNHN) • 1♂; Sabah State, Sandakan, Sepilok, Rainforest Discovery Centre; N5.87328, E117.93749, 95.1± 5.6 m.a.s.l.; 18 May 2022, 20h57; on the leaf litter; coll. M.K. Tan & T. Robillard; SBH.22.153 (FRC) • 1♂; Sabah State, Sepagaya Waterfall, near Lahad Datu; N4.98354, E118.14498, 182.4± 7.4 m.a.s.l.; 13 May 2022, 11h39; on the leaf litter; coll. M.K. Tan & T. Robillard; SBH.22.50 (ZRC) • 1♂, 1♀; Sabah State, Mount Silam, lowland forest; N4.97589, E118.19060, 341 m.a.s.l.; 13 May 2022, 20h; on the leaf litter; coll. M.K. Tan & T. Robillard; TR22-10 (MNHN) Distribution. Borneo, Sabah State: Sepilok, Mount Silam [new locality record], Sepagaya near Lahad Datu [new locality record] Type locality. EAST MALAYSIA, Sabah State, Sepilok Calling song (1 ♂, in captivity, 26.4°C) (Fig. 2). The calling song generally consists of a sequence of echemes which can be highly variable in duration (8–26 s). The echeme sequence typically begins with the echemes more erratic in terms of number of syllables, syllable durations and intervals. Each echeme is made up of 4–10 syllables (= pulses), and has an average duration of 140.9±65.3 ms (78.0–249.1 ms). Consecutive echemes have an average interval of 371.6±86.3 ms (285.6–474.3 ms). The average syllable duration is 14.1±1.5 ms (11.9–15.6 ms) and the average interval between consecutive syllables is 7.2±1.6 ms (5.4–9.7 ms). The dominant frequency is 8.34 kHz. Compared to the continuous trill of Cycloptiloides timah Ingrisch, 2006 from Singapore (see Tan et al., under review), the calling song of C. bimaculatus also differs by a distinctly shorter syllable duration (14.1 ms in C. bimaculatus vs. 25.7 ms in C. timah) and by the intervals between consecutive syllables (7.2 ms vs. 104.5 ms). The dominant frequency is also distinctly lower (8.3 kHz vs. 9.1 kHz). It should be noted that the average temperature of the recordings for the two species are different (26.5°C in C. bimaculatus vs. 30.5°C in C. timah), which may have contributed partly to the differences in the call parameters between the two species.Published as part of Tan, Ming Kai, Japir, Razy, Chung, Arthur Y. C., Wahab, Rodzay Bin Haji Abdul & Robillard, Tony, 2022, Taxonomy and bioacoustics of scaly crickets (Orthoptera, Mogoplistidae Mogoplistinae) from Borneo and Singapore, pp. 177-189 in Zootaxa 5213 (2) on pages 178-181, DOI: 10.11646/zootaxa.5213.2.6, http://zenodo.org/record/735437
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