50,487 research outputs found
Ampelocalamus stoloniformis C. H. Zheng, N. H. Xia & Y. F. Deng, comb. nov.
No full text<i>Ampelocalamus stoloniformis</i> (S. H. Chen & Zhen Z. Wang) C. H. Zheng, N. H. Xia & Y.F. Deng, <i>comb. nov.</i> <p> Basionym: <i>Drepanostachyum stoloniforme</i> Chen & Wang (2007: 308).</p> <p> <i>Drepanostachyum microphyllum</i> Chen & Wang (2004: 11), non <i>Drepanostachyum microphyllum</i> (Hsueh & Yi 1982: 71) Keng f. ex Yi (1993: 46).</p> <p> <b>Type:</b> — CHINA. Fujian: Xianmen, cultivated in Xiamen Botanical Garden, introduced from Guizhou, 110–200 m, 18 February 2004, <i>S. H</i> <i>.</i> <i>Chen 2004 -002</i> (holotype PE!, isotype IBSC!, XMBG!).</p> <p> <b>Distribution</b>:—The species was introduced to Xiamen Botanical Garden from Guizhou Province in 1970s, but the exact locality is unknown.</p> <p> <b>Conservation status</b>:—This species is so far only known from cultivated plants in Xiamen Botanical Garden. Because no data are available on its distribution in the wild, <i>Ampelocalamus stoloniformis</i> is provisionally considered to be Data Deficient (DD) according to the IUCN (2001) Red List criteria and categories.</p> <p> <b>Notes</b>:— <i>Ampelocalamus stoloniformis</i> is similar to <i>A. microphyllus</i>, but differs in its culms 3–6 mm (not 5–15 mm) in diameter, internodes (5–) 13–18 cm (not 15–35 cm) long, ligule of the culm sheath ca. 0.5 mm (not ca. 1 mm) long, ligule of the leaf ca. 3 mm (not ca. 1 mm) long, and leaf blades 2–6 × 0.3–0.6 cm (not 3– 9 × 0.4–1.0 cm) (Hsueh & Yi 1982, Chen & Wang 2004, 2007, Li & Stapleton 2006).</p>Published as part of <i>Zheng, Chaohan, Xia, Nianhe & Deng, Yunfei, 2013, Ampelocalamus stoloniformis, a new combination for Chinese Bambusoideae (Poaceae), pp. 62-63 in Phytotaxa 135 (1)</i> on pages 62-63, DOI: 10.11646/phytotaxa.135.1.7, <a href="http://zenodo.org/record/5086183">http://zenodo.org/record/5086183</a>
An improved study of the kappa resonance and the non-exotic s wave pi K scatterings up to root s=2.1 GeV of LASS data
No full textWe point out that the dispersion relation for the left-hand cut integral presented in one of our previous paper [H.Q. Zheng, et al., Nucl. Phys. A 733 (2004) 235] is actually free of subtraction constant, even for unequal mass elastic scatterings. A new fit to the LASS data [D. Aston, et al., LASS Collaboration, Nucl. Phys. B 296 (1988) 493] is performed and firm evidence for the existence of kappa pole is found. The correct use of analyticity also put strong constraints on threshold parameters-which are found to be in good agreement with those obtained from chiral theories. We also determined the pole parameters of K-0*(1430) 0 on the second sheet, and reconfirm the existence of K-0*(1950) on the third sheet. We stress that the LASS data do not require them to have the twin pole structure of a typical Breit-Wigner resonance. (c) 2006 Elsevier B.V. All rights reserved.Physics, NuclearSCI(E)0ARTICLE3-4212-22377
Chem. Eng. Sci.
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In this work, the interactions between a representative pyridinium-based ionic liquid (IL) with cyano-functionalized anion ([C4Py][SCN]) and dimethyl sulfoxide (DMSO) were investigated in detail using attenuated total reflection infrared spectroscopy (ATR-FTIR), hydrogen nuclear magnetic resonance (H-1 NMR), and density functional theory (DFT) calculations. It was found that H-bonds are universally involved and play important role for the miscibility of DMSO with [C4Py][SCN] IL and maintain the stability of this system. ATR-FTIR and excess spectroscopy analysis indicated that the H-bonds involving the alkyl C-Hs and C N are strengthened with the addition of DMSO, while the H-bonds involving pyridinium ring C-Hs as well as the H-bonds formed between the [C4Py](+) and [SCN](-) are weakened. The addition of [C4Py][SCN] IL led to the H-bonds involving the C-Hs in DMSO weakened comparing with the associated H-bonds in the pure DMSO system. The results of DFT calculations indicated that the DMSO molecules cannot disrupt the strong Coulombic interaction between the [C4Py](+) and [SCN](-). Natural bond orbital (NBO) analysis further confirmed that the interaction mechanisms of DMSO molecule with the anion and cation are different in nature. These studies will shed light on exploring the applications of ILs as reaction or separation media. (C) 2014 Elsevier Ltd. All rights reserved</p
Field and molecular evaluation of insect-resistant transgenic poplar (Populus nigra L.) trees
No full textReceiver-Driven Adaptive Enhancement Layer Switching Algorithm for Scalable Video Transmission Over Link-adaptive Networks
No full textA receiver-driven adaptive layer switching algorithm is proposed for adapting the video bitrate to match the achievable network throughput. It relies on a QoS-constrained equivalent bandwidth estimator employed at the receiver, which is used for triggering the adjustment of video layers at the video source. Simulations are conducted to illustrate its efficiency by showing that it is capable of accommodating different channel qualities without their prior knowledge
Surface skinning using periodic T-spline in semi-NURBS form
No full textNURBS skinning is a powerful and effective process in Computer Aided Geometric Design (CAGD). It constructs a surface by interpolating a set of cross sectional NURBS curves. These curves however may not be compatible, i.e., they have different knot vectors. This incompatibility is conventionally solved by knot refinement bringing all curves to share the same knot vector, which leads to an explosion in the number of control points defining the skinned surface. Another disadvantage of NURBS skinning is the difficulty of local modification: adjusting one cross section may result in a global change of the surface. In this paper, periodic T-spline in semi-NURBS form is discussed. Surface skinning using such T-splines is able to handle closed cross sections, to support local modifications and to control smoothness along the cross sectional curves. We provide explicit formulae for constructing such T-spline skinned surfaces, which avoid solving a large system of equations. Experimental results and theoretical analysis confirm that our approach is better than NURBS skinning as it generates surfaces with fewer control points. © 2014 Elsevier B.V. All rights reserved.Dyn N., 1987, Computer-Aided Geometric Design, V4, DOI 10.1016-0167-8396(87)90001-X; Farin G., 2000, ESSENTIALS CAGD; Jaillet FSB, 1997, P 9 CAN C COMP GEOM, P199; LEE ETY, 1989, COMPUT AIDED DESIGN, V21, P363, DOI 10.1016-0010-4485(89)90003-1; Li Y., 2011, AS C DES DIG ENG, P266; Nasri A., 2003, Proceedings 11th Pacific Conference on Computer Graphics and Applications; Nasri A, 2012, VISUAL COMPUT, V28, P787, DOI 10.1007-s00371-012-0692-1; Park H, 2000, COMPUT AIDED DESIGN, V32, P237, DOI 10.1016-S0010-4485(99)00088-3; Park H, 2003, COMPUT AIDED DESIGN, V35, P1261, DOI 10.1016-S0010-4485(03)00040-X; Park H, 1996, COMPUT AIDED DESIGN, V28, P995, DOI 10.1016-0010-4485(96)00019-X; Piegl L, 1996, COMPUT AIDED DESIGN, V28, P699, DOI 10.1016-0010-4485(95)00084-4; Piegl LA, 2000, IEEE COMPUT GRAPH, V20, P70, DOI 10.1109-38.865883; Piegl LA, 2002, VISUAL COMPUT, V18, P273, DOI 10.1007-s003710100156; Sederberg TN, 2003, ACM T GRAPHIC, V22, P477, DOI 10.1145-882262.882295; Sederberg TW, 2004, ACM T GRAPHIC, V23, P276, DOI 10.1145-1015706.1015715; Sederberg T.W., 2008, ACM T GRAPHIC, V27, P1, DOI 10.1145-1360612.1360678; TILLER W, 1992, COMPUT AIDED DESIGN, V24, P445, DOI 10.1016-0010-4485(92)90012-Y; Wang WK, 2008, COMPUT AIDED DESIGN, V40, P999, DOI 10.1016-j.cad.2008.08.001; Wang Y., 2007, 6 INT C INF COMM SIG, P1; Wang YM, 2006, LECT NOTES COMPUT SC, V4077, P385; WOODWARD CD, 1988, COMPUT AIDED DESIGN, V20, P441, DOI 10.1016-0010-4485(88)90002-4; Zheng J., 2011, LNCS, V6920, P731; Zheng J., 2005, P 3 INT C COMP GRAPH, P405, DOI 10.1145-1101389.11014680
Belowground interplant carbon transfer promotes soil carbon gains in diverse plant communities
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