1,391 research outputs found
A Jurassic flower bud from China
No full textCui, Da-Fang, Hou, Yemao, Yin, Pengfei, Wang, Xin (2022): A Jurassic flower bud from China. Geological Society, London, Special Publications 521: 1-13, DOI: 10.1144/SP521-2021-12
Florigerminis Cui & Hou & Yin & Wang 2022, gen. nov.
No full textFlorigerminis gen. nov. Type species. Florigerminis jurassica gen. et sp. nov. Etymology. Flori- for flower in Latin, - germinis for bud in Latin. Generic diagnosis. Woody branch with nodes, leaf scars, physically connected fruit and flower bud. Leaves abscised, helically arranged, with decurrent petioles. Flower–fruit pairs helically clustered on the distal portion of the branch. Flower bud terminated on the branch, paired, with a straight pedicel, oval-shaped, with several tepals suggested by their sculpture. Multiple tepals smooth-margined, tightly enwrapping the centre. Fruit borne on a slender curving pedicel, oval-shaped, with four persistent decussately arranged foliar parts and an apical invagination. Endocarp elongated oval, with a pointed tip. Locality. Daohugou Village, Ningcheng, Inner Mongolia, China (41° 18′ 39.60″ N, 119° 13′ 29.14″ E). Horizon. The Jiulongshan Formation.Published as part of Cui, Da-Fang, Hou, Yemao, Yin, Pengfei & Wang, Xin, 2022, A Jurassic flower bud from China, pp. 1-13 in Geological Society, London, Special Publications 521 on pages 3-4, DOI: 10.1144/SP521-2021-122, http://zenodo.org/record/588388
Fig. 1 in A Jurassic flower bud from China
No full textFig. 1. The fossil locality of Florigerminis jurassica gen. et sp. nov. (a) Map of NE China. The arrow points to the junction region between Liaoning, Inner Mongolia and Hebei, which is enlarged in (b). (b) Detailed map showing Daohugou Village, Ningcheng, Inner Mongolia, China (41° 18′ 39.60″ N, 119° 13′ 29.14″ E) (arrow) very close to the junction of Inner Mongolia, Hebei and Liaoning.Published as part of Cui, Da-Fang, Hou, Yemao, Yin, Pengfei & Wang, Xin, 2022, A Jurassic flower bud from China, pp. 1-13 in Geological Society, London, Special Publications 521 on page 2, DOI: 10.1144/SP521-2021-122, http://zenodo.org/record/588388
sj-pdf-1-imr-10.1177_03000605211045224 - Supplemental material for Association of dyslipidemia with chronic non-malignant pain in elderly patients with femoral neck fractures treated by primary total hip arthroplasty: a retrospective study
No full textSupplemental material, sj-pdf-1-imr-10.1177_03000605211045224 for Association of dyslipidemia with chronic non-malignant pain in elderly patients with femoral neck fractures treated by primary total hip arthroplasty: a retrospective study by Chen Wang, Bo Xu, Pengfei Wang, Weiguang Yu, Xianshang Zeng, Nana Xiong, Pingping Yin, Qilong Liu and Huanyi Lin in Journal of International Medical Research</p
sj-doc-1-wso-10.1177_17474930231176948 – Supplemental material for Effect of routine inflammatory markers on clinical outcomes in acute basilar artery occlusion after endovascular thrombectomy: Results from ATTENTION registry
No full textSupplemental material, sj-doc-1-wso-10.1177_17474930231176948 for Effect of routine inflammatory markers on clinical outcomes in acute basilar artery occlusion after endovascular thrombectomy: Results from ATTENTION registry by Rui Li, Yamei Yin, Xueli Cai, Yuyou Zhu, Shuo Feng, Jun Sun, Chunrong Tao, Pengfei Xu, Li Wang, Jianlong Song, Qingqing Zhou, Wenhua Liu and Wei Hu in International Journal of Stroke</p
Figure 11 in An unexpected noncarpellate epigynous flower from the Jurassic of China
No full textFigure 11. Idealized reconstruction of Nanjinganthus. 1, branches of dendroid style; 2, dendroid style; 3, sepal; 4, ovarian roof; 5, scale; 6, seed; 7, cup-form receptacle/ovary; 8, bract; 9, petal; 10, unknown organ (staminode?). DOI: https://doi.org/10.7554/eLife.38827.019Published as part of Fu, Qiang, Diez, Jose Bienvenido, Pole, Mike, Ávila, Manuel García, Liu, Zhong-Jian, Chu, Hang, Hou, Yemao, Yin, Pengfei, Zhang, Guo-Qiang, Du, Kaihe & Wang, Xin, 2018, An unexpected noncarpellate epigynous flower from the Jurassic of China, pp. 1-24 in eLife (e38827) 7 on page 17, DOI: 10.7554/eLife.38827.001, http://zenodo.org/record/588502
Enhancing the longevity of magnesium implants with cold-sprayed Ta/Ag coatings: Optimization of corrosion and wear resistance
No full textMagnesium alloys are gaining attention for biomedical implants due to their lightweight nature and bonemimicking mechanical properties. However, their high reactivity and vulnerability to corrosion restrict their long-term application in biomedicine. This study explores the potential of enhancing corrosion resistance and wear performance of magnesium through tantalum/silver (Ta/Ag) composite coatings manufactured by cold spray for durable implant devices. The coatings exhibited adhesive strengths ranging from 22.5 to 27.5 MPa, sufficient to prevent delamination. The inclusion of silver in the composites effectively protected the tantalum matrix from corrosion, preserving its structural integrity over a long period of corrosion. Additionally, a higher silver content improved fatigue wear resistance by inhibiting crack propagation and increased the hardness-to-Young’s modulus ratio through in-situ mechanical mixing of Ag and Ta during wear, which also reduced the generation of free debris particles. Among the tested compositions, the Ta–5Ag composite offered the best overall protection, optimizing corrosion resistance, wear performance, and mechanical stability. These results indicate that cold sprayed Ta/Ag composite coatings are a promising approach to making magnesium alloys more viable as long-term implant materials
Improved quantitative risk assessment of a natural gas pipeline considering high-consequence areas
No full textCurrently, quantitative risk assessment is often used for pipeline safety analysis. However, the low probability of pipeline failure may produce a false safety evaluation result because high-consequence areas with high population densities cannot be effectively identified. Furthermore, nearly half of the gas leakage accidents in China have occurred in densely populated areas. Therefore, an improved quantitative risk assessment method is proposed. First, we establish two models: (1) a failure probability model based on improved historical failure and disaster derivation probabilities and (2) a risk consequence model considering potential direct and indirect losses based on the probability of disaster evolution. Considering the concept of human rights equality and the social model of "life is first" in China, a method to correct the loss value of life according to population density is proposed, which can effectively avoid the hidden phenomenon of high-consequence areas mentioned above. A pipeline in China is evaluated using this improved method. Compared with traditional evaluation results, the new evaluation method can effectively identify a high-consequence area and obtain more reasonable results. Thus, a pipeline maintenance plan can ensure the interests of enterprises and fully respect the lives of individuals threatened by the potential risk of the pipeline
All-optical modulation in Black Phosphorus functionalized microfibre coil resonator
No full textAll-optical modulation is experimentally demonstrated in a microfibre coil resonator (MCR) functionalized with black phosphorus (BP) nanosheets (BP-MCR). The BP nanosheets is deposited onto microfibre and then microfibre is wrapped on a PMMA rod covered with UV-curable low refractive index polycarbonate (PC) resin. The BP-MCR modulation properties are regulated based on BP absorption, photo-thermal and optical Kerr effects. The resonance wavelength and extinction ratio responsivity to incident pump power can attain ∼0.033 nm mW-1 and ∼0.180 dBm mW-1, while the averaged rising/falling response time is ∼9.58/8.53 ms. The device could find applications as all-optical modulator, optical switch or tunable optical filter.</p
Florigerminis jurassica Cui & Hou & Yin & Wang 2022, gen. et sp. nov
No full text<p> <i>Florigerminis jurassica</i> gen. et sp. nov.</p> <p> <i>Etymology</i>. <i>jurassica</i> for the Jurassic, the age of the fossil plant (Figs 2 & 3).</p> <p> <i>Species diagnosis</i>. In addition to the generic diagnosis, branch 21 mmlongand 2.6 mm wide, slightly tapering distally, internode 2.9–5.1 mm long. Leaf scars 0.4–0.6 mm wide and 0.23 mm thick. Flower bud pedicel straight, 4.6 mm long and 1 mm wide. Flower bud 3.8 mm long and 3.3 mm wide. Lower tepals 1.2 mmlongand>0.8 mm wide. Uppertepals 1.8–3.8 mmlongand 1.5–2.6 mm wide. Fruit approximately 11.5 mmlongand 7.7 mm wide, on a longitudinally striated 22 mm-long and 0.65 mmwide pedicel, with an apical invagination approximately 0.5 mm deep, and persistent foliar parts approximately 2.4 mmlongand 1.4 mm wide. Endocarp approximately 9 mm long and 6 mm wide.</p> <p> <i>Holotype</i>. PB21737.</p> <p> <i>Description</i>. The holotype specimen is 42 mm long and 20 mm wide, preserved as a compression with some coalified residue and an impression (Fig. 2a). The plant tissues are embedded in yellowish volcanic tuff (Fig. 2a–c). When the coalified residue falls off, an exquisite morphological impression is left on the fine sediment matrix (Figs 2d–i & 3a–g). The preserved part of the fossil includes a leafy branch that is physically connected to a fruit and a flower bud (Fig. 2a). The branch is elongated, approximately 21 mm long and 2.6 mm wide, with longitudinal fine striations on its surface and at least five nodes, tapering distally (Figs 2a, d, h & 3b, d, e). The nodes are marked by several transversal wrinkles (Figs 2h & 3b). The lengths of the internodes increase from 2.9 mm at the proximal to 5.1 mm at the distal (Fig. 2a, h). Leaves with decurrent bases are helically arranged along the branch, more concentrated to the distal portion of each internode (Figs 2h & 3d). All of the leaves have been abscised and only have their scars left on the branch (Figs 2a, h & 3d). The leaf scars are 0.4–0.6 mm wide and 0.23 mm thick, with terminal abscission zones (Fig. 3b, d & e). Close to the terminal of the branch, fruit pedicel scars are subtended by bracts (Fig. 3a– c). The fruit pedicel with longitudinal fine striations is rounded in cross-view, branching into a pair (Figs 2a–c, i, j & 3h–i). The fruits are inserted subapically (Figs 2a, b & 3a). The flower bud (only one visible in full) is in pairs, on a straight pedicel approximately 4.6 mm long and 1 mm wide, oval in shape, approximately 3.8 mm long and 3.3 mm wide (Fig. 2a, b, e– g, i, j). Several layers of upper tepals enwrap the central part (Figs 2e–g, 3g–i, 4 & 5a). Micro-CT sections indicate that the tepals surround the bud centre (gynoecium?) (Fig. 3h, i). Uppertepals vary from 1.8 to 3.8 mm in length and from 1.5 to 2.6 mm in width (Figs 2e–g, 3g & 5a), distinguishing from each other by differently orientated sculpture (Figs 2e–g, 3g, 4 & 5a). The fruit is approximately 11.5 mm long and 7.7 mm wide, on a pedicel 22 mm long and only 0.65 mm wide, subtended by four (only three visible in the fossil) foliar parts approximately 2.4 mmlongand 1.4 mm wide, with an apical invagination approximately 0.5 mm deep (Figs 2a, c, k, l & 3j). Only the mesocarp and endocarp of the fruits are visible, while the exocarp (epidermis) is too thin to see (Figs 2a, c, k & 5b). The mesocarp is approximately 0.34–1.1 mm thick, much thinner near the fruit tip (Figs 2a, c, k & 5b). The endocarp is approximately 9 mm long and 6 mm wide, with a pointed tip (Figs 2a, c & 5b).</p> <p> <i>Depository</i>. The Nanjing Institute of Geologyand Palaeontology, Nanjing, China.</p> <p> <i>Remarks</i>. Only one flower bud and one fruit are preserved in entirety in this fossil. However, there is one extra slender pedicel that is identical to that of the preserved fruit (Fig. 2a, b, i), and there seems to be another pedicel of a flower bud embedded in the sediments (Fig. 2i, j). Considering the morphology of the fruit pedicel, we assume that it is another fruit, which, unfortunately, is not visible in this specimen. Furthermore, several fruit pedicel scars (Fig. 3a–c) strongly imply the existence of fallen fruits in <i>Florigerminis</i>. Therefore, we assume that this fossil originally bore two fruits and two flower buds.</p>Published as part of <i>Cui, Da-Fang, Hou, Yemao, Yin, Pengfei & Wang, Xin, 2022, A Jurassic flower bud from China, pp. 1-13 in Geological Society, London, Special Publications 521</i> on page 4, DOI: 10.1144/SP521-2021-122, <a href="http://zenodo.org/record/5883880">http://zenodo.org/record/5883880</a>
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