24,149 research outputs found
Petrocosmea panzhouensis Sheng H. Tang & Tao Peng 2022, sp. nov.
No full textPetrocosmea panzhouensis Sheng H.Tang & Tao Peng, sp. nov., Figure 1 Type:— CHINA. Guizhou Province, Panzhou County, Pugu Town, Niangniang Mountain, 26°04′45.56″N, 104°49′14.83″E, approximately 1472 m elev., 9 May 2022, Sheng-Hu Tang 202205001 (Holotype: CSH [CSH0193338]!, Isotype: CSH!, GZBG!) Petrocosmea henryi and P. weiyigangii are the only other two species of the genus with lobed leaves. Petrocosmea panzhouensis can be easily distinguished from the first by bracts spathulate, rarely oblanceolate (vs. linear or lanceolate), adaxial corolla lip apex 2-lobed to near middle (vs. emarginate or obtuse), anthers triangular, 1.7–1.8 mm long (vs. sagittate, 4.5–5 mm long). The new taxon can be easily distinguished from P. weiyigangii by adaxial corolla lip apex 2-lobed to near middle (vs. emarginate), straight filaments and densely glandular puberulent (vs. geniculate near middle and white pilose). Herbs, perennial, stemless. Rhizome short, cylindrical, 7–10 mm long, 4.7–8.4 mm in diameter. Leaves all basal, 20 to 70; the inner leaves with petioles 5–20 mm long, the outer leaves with petioles 20–84 mm long, 1.1–1.3 mm in diameter, petiole densely pubescent and sparsely villous; leaf blade papery when dry, broadly ovate or suborbicular, 13–21.9 × 15.5–25.2 mm, adaxially densely pilose, abaxially densely pubescent, base broadly cuneate, suborbicular or truncate, sometimes peltate, margin irregularly lobed, apex obtuse or suborbicular; lateral veins 3–4 on either side of the midrib, adaxially inconspicuous or slightly impressed, abaxially prominent. Cymes 1–26, one flower per cyme; peduncle 22.2–48.5 mm long, 1–1.3 mm in diameter, densely pubescent and sparsely pilose; bracts 2, opposite, spathulate, rarely oblanceolate, 1.9–3.3 × 0.6–1.6 mm, margin entire, both outside and inside pilose; pedicel 11.2–32.5 mm long, 0.5–0.8 mm in diameter, densely pubescent and sparsely pilose. Calyx zygomorphic, outside densely pilose, inside glabrous; adaxial calyx lip 3.6–4.3 mm long, 3-parted from near base, segments equal, lanceolate or ovate-lanceolate, 2.6–3.3 × 0.8–1.3 mm, margin entire, apex acuminate; abaxial calyx lip 2-parted from base, segments equal, ovate-lanceolate or lanceolate, 3.8–4.9 × 1.3–1.5 mm, margin entire, apex acuminate. Corolla blue-purple, 14.6–16.2 mm long, outside densely puberulent, inside glabrous; tube 3.6– 6.5 mm long, 6–7 mm in diameter at mouth, 3–4 mm in diameter at base, subcampanulate, two dark blue-purple spots inside the tube beneath the anthers; throat blue-purple, without spots or stripes; limb distinctly 2-lipped, adaxial corolla lip erect, 4.9–5.5 × 6–8.9 mm, 2-lobed to near the middle, lobes ovate or broadly ovate, overlapped, 3.7–4.1 × 3.6–5.1 mm; abaxial corolla lip 8.7–10.8 × 14.5–16.9 mm, 3-lobed to near the middle, lobes subequal, ovate or broadly ovate, 5.4–6.7 × 5.1–7.4 mm. Stamens 2, connivent, adnate to the corolla tube near base, included; filaments 1.3–1.8 mm long, 0.5–0.7 mm in diameter, straight, densely glandular puberulent, apex slightly curved; anthers triangular, 1.7–1.8 × 1.6–1.8 mm, basifixed, two anthers connivent, not coherent at apex, thecae two, parallel, not confluent at apex, poricidal at the apex, connective not projecting, sparsely puberulent; staminodes absent. Disc absent. Pistil 7.1–7.7 mm long; ovary 2–2.1 mm long, 1.2–1.4 mm in diameter, ovoid or narrowly ovoid, densely pilose and sparsely glandular puberulent, 1-loculed, placentas 2, sometimes 3, parietal, projecting inward, 2-cleft; style 5.1–5.6 mm long, 0.2–0.3 mm in diameter, sparsely glandular puberulent at base, glabrescent above base; stigma 1, terminal, capitate, apex emarginate. Capsule straight in relation to pedicel, 4.6–6 mm long, 1.4–1.6 mm in diameter, oblong to ovoid, sparsely pilose, dehiscing loculicidally to base; valves 2, straight, not twisted. Seeds 0.3–0.4 mm long, ellipsoid to broadly ellipsoid, unappendaged. Phenology:— Flowering occurs from late April to June. Fruiting occurs from late August to September. Etymology:— The new taxon is named after the type locality, Panzhou County, China. Vernacular name:— The Chinese name is “Pán Zhōu Shí Hú Dié” (ȐffibOiḀ). Distribution and habitat:— Only two populations have been found in Niangniang Mountain, Pugu Town, Panzhou County, Guizhou Province, China. The plants grow on rocks in limestone caves (Fig. 2). The main companion species was Adiantum gravesii Hance (1875: 197). Conservation status:— Two populations with approximately 500 mature individuals were found at and around the type locality. The habitats are in villages and threatened by human activities. We visited other sites in Niangniang Mountain several times in the last five years and did not find other populations. Before carrying out further investigations, this species should be assessed as “Data Deficient” (DD), according to the IUCN standards (IUCN 2012, 2022). Morphological affinities:— The new taxon is most similar to Petrocosmea henryi (Fig. 3) in having lobed leaf blades, one flower per cyme and straight filaments, but it can be easily distinguished from the latter by the shape and length of the anthers. The new taxon is also similar to P. weiyigangii in sharing the lobed leaf blades, but they are different in the shape of adaxial corolla lip apex and filaments. The detailed morphological comparisons among P. panzhouensis, P. henryi and P. weiyigangii are shown in Table 1. It should be noted that when Hemsley described Petrocosmea minor Hemsley (1899: pl. 2600), he cited two collections, viz., Hancock 428 and A. Henry 9154. Craib examining Hancock’s specimens realized that the original figure of P. minor was drawn from these plants, and not from Henry’s collections, so he described P. henryi with strongly waved leaf blade margin and elongate and sagittate anthers (Craib 1918). In fact, the collection A. Henry 9154 contained several taxa, including P. henryi and P. minor (Global Plants 2022). In 1985, P. henryi was designated as synonymy of P. minor, based on indumentum on filaments (Wang 1985). In 1996, A. Henry 9154 (E00396425) was labeled and verified as Holotype of P. henryi and Isosyntype of P. minor by Skog and Weitzman. In 2021, P. henryi was reinstated (Shaw 2021).Published as part of Tang, Sheng-Hu, Zhang, Jian-Hua, Peng, Tao & Guo, Ying, 2022, Petrocosmea panzhouensis (Gesneriaceae), a new species from Guizhou, China, pp. 225-231 in Phytotaxa 572 (3) on pages 227-230, DOI: 10.11646/phytotaxa.572.3.1, http://zenodo.org/record/732217
A revision of the genus Anthoceros (Anthocerotaceae, Anthocerotophyta) in China
No full textPeng, Tao, Zhu, Rui-Liang (2013): A revision of the genus Anthoceros (Anthocerotaceae, Anthocerotophyta) in China. Phytotaxa 100 (1): 21-35, DOI: 10.11646/phytotaxa.100.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.100.1.
Nanoimprint lithography for planar chiral photonic meta-materials
No full textRoom temperature nanoimprint lithography has successfully been applied to the fabrication of planar chiral photonic meta-materials. For dielectric chiral structures a single layer of thick HSQ was used while for metallic chiral structures a bi-layer technique using PMMA/hydrogen silsequioxane (HSQ) was applied. The polarization conversion capabilities of planar chiral structures imprinted in dielectric materials have experimentally been observed. This indicates that the developed processes in this work have the prospect of manufacturing planar photonic meta media in high volume at low cost
Design and implementation of TAO DAQ system
No full textPurposeThe Taishan Antineutrino Observatory (TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO), also known as JUNO-TAO. Located close to one of the reactors of the Taishan Nuclear Power Plant, TAO will measure the antineutrino energy spectrum precisely as a reference spectrum for JUNO. The data acquisition (DAQ) system is designed to acquire data from the TAO readout electronics and process it with software trigger and data compression algorithms. The data storage bandwidth is limited by the onsite network to be less than 100 Mb/s.MethodsThe system is designed based on a distributed architecture, with fully decoupled modules to facilitate customized design and implementation. It is divided into two main components: the data flow system and the online software. The online software serves as the foundation, providing the electronics configuration, the process management, the run control, and the information sharing. The data flow system facilitates continuous data acquisition from various electronic boards or trigger systems, assembles and processes raw data, and ultimately stores it on the disk.ResultsThe core functionality of the system has been designed and developed. The usability of the data flow system interface and the software trigger results have been verified during the pre-installation testing phase.ConclusionThe DAQ system has been deployed for the TAO experiment. It has also successfully been applied to the integration test of the detector and electronics prototypes
FIGURE 2 in Petrocosmea panzhouensis (Gesneriaceae), a new species from Guizhou, China
No full textFIGURE 2. Habitats of Petrocosmea panzhouensis Sheng H.Tang & Tao Peng, sp. nov. A type locality of P. panzhouensis, growing inside the cave B, C landscape of Niangniang Mountain D, E, F P. panzhouensis in the cave at the the type locality. (Photographs by Sheng-Hu Tang).Published as part of Tang, Sheng-Hu, Zhang, Jian-Hua, Peng, Tao & Guo, Ying, 2022, Petrocosmea panzhouensis (Gesneriaceae), a new species from Guizhou, China, pp. 225-231 in Phytotaxa 572 (3) on page 228, DOI: 10.11646/phytotaxa.572.3.1, http://zenodo.org/record/732217
sj-docx-1-usj-10.1177_00420980231223088 – Supplemental material for Hukou type, hukou place and labour market vulnerability in Chinese megacities: The case of Beijing in the COVID-19 pandemic
No full textSupplemental material, sj-docx-1-usj-10.1177_00420980231223088 for Hukou type, hukou place and labour market vulnerability in Chinese megacities: The case of Beijing in the COVID-19 pandemic by Qiujie Shi, Tao Liu and Rongxi Peng in Urban Studies</p
Petrocosmea panzhouensis (Gesneriaceae), a new species from Guizhou, China
No full textTang, Sheng-Hu, Zhang, Jian-Hua, Peng, Tao, Guo, Ying (2022): Petrocosmea panzhouensis (Gesneriaceae), a new species from Guizhou, China. Phytotaxa 572 (3): 225-231, DOI: 10.11646/phytotaxa.572.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.572.3.
sj-7z-1-ctp-10.1177_20570473231165563 – Supplemental material for Differentiation and unity: A Cross-platform Comparison Analysis of Online Posts’ Semantics of the Russian–Ukrainian War Based on Weibo and Twitter
No full textSupplemental material, sj-7z-1-ctp-10.1177_20570473231165563 for Differentiation and unity: A Cross-platform Comparison Analysis of Online Posts’ Semantics of the Russian–Ukrainian War Based on Weibo and Twitter by Wei Tao and Yingtong Peng in Communication and the Public</p
Supplemental Material1 - Supplemental material for Scheduling just-in-time part replenishment of the automobile assembly line with unrelated parallel machines
No full textSupplemental material, Supplemental Material1 for Scheduling just-in-time part replenishment of the automobile assembly line with unrelated parallel machines by Binghai Zhou and Tao Peng in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science</p
Supplemental Material2 - Supplemental material for Scheduling just-in-time part replenishment of the automobile assembly line with unrelated parallel machines
No full textSupplemental material, Supplemental Material2 for Scheduling just-in-time part replenishment of the automobile assembly line with unrelated parallel machines by Binghai Zhou and Tao Peng in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science</p
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