329,871 research outputs found
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
Full text linkFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Transition layer for the heterogeneous Allen–Cahn equation
No full textWe consider the equation
(1)
where Ω is a smooth and bounded domain in Rn, ν the outer unit normal to ∂Ω, and a a smooth function satisfying −10} and {a<0}. Assuming ∇a≠0 on K and a≠0 on ∂Ω, we show that there exists a sequence εj→0 such that Eq. (1) has a solution uεj which converges uniformly to ±1 on the compact sets of Ω± as j→+∞. This result settles in general dimension a conjecture posed in [P. Fife, M.W. Greenlee, Interior transition layers of elliptic boundary value problem with a small parameter, Russian Math. Surveys 29 (4) (1974) 103–131], proved in [M. del Pino, M. Kowalczyk, J. Wei, Resonance and interior layers in an inhomogeneous phase transition model, SIAM J. Math. Anal. 38 (5) (2007) 1542–1564] only for n=
Fig. 1. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A in Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China
No full textFig. 1. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A. Habit; B. Opened corolla with stamens and staminodes; C. One calyx lobe; D. Calyx and pistil. [Fang Wen 100803, IBK] [Drawing: Wen-Hong Lin]Published as part of Wen, Fang & Wei, Yi-Gang, 2014, Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China, pp. 9-19 in Candollea 69 (1) on page 11, DOI: 10.15553/c2014v691a2, http://zenodo.org/record/576184
Primulina undetermined Wen & Wei, 2014, spec. nov.
No full text<p> <i>P. spec. nov.</i></p> <p> <b>CHINA. Guangxi:</b> Baishi, Xingan County, Guilin, 495 m, 1.VII.2010, <i>F. Wen, J. Li & X. Hong 00177</i> (IBK; ANU).</p>Published as part of <i>Wen, Fang & Wei, Yi-Gang, 2014, Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China, pp. 9-19 in Candollea 69 (1)</i> on page 18, DOI: 10.15553/c2014v691a2, <a href="http://zenodo.org/record/5761846">http://zenodo.org/record/5761846</a>
Fig. 2. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A in Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China
No full textFig. 2. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A. Natural hillside habitat; B. Natural habitat; C. Plant in natural habitat; D. Plant with cymes and flowers in cultivation; E. Frontal view of cyme and flowers; F. Anatomical dissections of the cyme, showing bracts, pistil and opened corolla; G. Lateral view of flower, calyx and pistil; H. daxial and abaxial views of calyx lobes. [D-H: Fang Wen 100803, IBK] [Photos: A-C: Fang Wen; D-E: Shi-Liang Mo; F-H: Wen-Hong Lin]Published as part of Wen, Fang & Wei, Yi-Gang, 2014, Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China, pp. 9-19 in Candollea 69 (1) on page 12, DOI: 10.15553/c2014v691a2, http://zenodo.org/record/576184
Figure 10. Siobla malaisei Mallach, 1933. a–c, f, h, j, m–l in Review of some Siobla (Hymenoptera: Tenthredinidae) species
No full textFigure 10. Siobla malaisei Mallach, 1933. a–c, f, h, j, m–l. Holotype of S. tuberculatana Wei, 2002, ♀. d–e, g, i, k, n–o. Paratype of S. tuberculatana Wei, 2002, ♂. a. Dorsal view. b. Lateral view. c. Labels. d. Dorsal view. e. Lateral view. f–g. Head in dorsal view. h–i. Head in lateral view. j–k. Thorax in dorsal view. l. Lancet. m. Middle serrulae. n. Gonoforcep. o. Penis valve. Scale bars = 1 mm.Published as part of Niu, Gengyun & Wei, Meicai, 2020, Review of some Siobla (Hymenoptera: Tenthredinidae) species, pp. 208-224 in Zoological Systematics 46 (3) on page 217, DOI: 10.11865/zs.2020303, http://zenodo.org/record/717579
Cultural identities as reflected in the literature of the Northern and Southern dynasties period (4th-6th centuries A.D.)
Full text linkDuring the period of the Northern and Southern dynasties of China identity questions became serious in a society thrown into disorder by political, religious and ethnic problems. This thesis uses three books written in the sixth century to
discuss how educated Chinese faced identity problems and how they dealt with them.
The Buddhist monk Huijiao, dealt with the problems of sinifying a foreign religion. He constructed many different identities in addition to the Buddhist one for the monks in his book Gaoseng zhuan, (Lives of Eminent Monks), a collection of biographies of Buddhist monks, to bring Buddhism closer to Chinese tradition and more acceptable by Confucian standards. Through the identity construction he
also made responses to anti-Buddhist ideas.
Yang Xuanzhi's Luoyang qielan ji, (Record of the Monasteries of Luoyang), deals with the identity problems of Chinese officials serving a Xianbei regime in
the north and of the short-lived capital of the Northern Wei in Luoyang. Yang reconstructed a Chinese identity for the lost capital as a true heir of Chinese tradition, as were the emperors, princes and officials who lived there. He created an identity defined not by ethnicity but by culture.
Yan Zhitui's Tanshi jiaxun, (Family Instruction of the Yan Clan), is a book which tells his descendants how to construct and maintain the future identity of his
own family. He drew on his own experience of recovering from repeated political catastrophes to set out an identity that would help the family to survive disordered times and maintain their status in society
Siobla pseudoplesia Niu & Wei 2012
No full textSiobla pseudoplesia Niu & Wei, 2012 (Figs 2 g, 2 h, 5 c, 5 d, 6 j–n, 9 h, 9 u, 10 w, 10 x) Siobla pseudoplesia Niu et al., 2012: 410. f #, type locality: Mt. Shennongjia, Hubei (China). Distribution. China (Ningxia, Shaanxi, Shanxi, Henan, Hubei, Sichuan). Remarks. The species is similar to S. acutitheca Niu & Wei, 2010 but differs from it in the ovipositor sheath distinctly shorter than middle tibia, the apical sheath very narrow in lateral view and acute at apex, the middle breadth of apical sheath about half breadth of the apex of hind tibia; the serrulae weakly sclerotized and almost flat, the 10 th serrula with 10–12 minute teeth; the postocellar area as broad as long; the interspaces between punctures on mesonotum microsculptured, almost mat; the abdominal tergite 1 weakly microsculptured, tergites 2–9 hardly microsculptured; and the first pulvillus small, distinctly shorter than half apical breadth of metabasitarsus.Published as part of Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), pp. 41-68 in Zootaxa 3746 (1) on page 51, DOI: 10.11646/zootaxa.3746.1.2, http://zenodo.org/record/28530
Siobla pseudoplesia Niu & Wei 2012
No full textSiobla pseudoplesia Niu & Wei, 2012 (Figs 2 g, 2 h, 5 c, 5 d, 6 j–n, 9 h, 9 u, 10 w, 10 x) Siobla pseudoplesia Niu et al., 2012: 410. f #, type locality: Mt. Shennongjia, Hubei (China). Distribution. China (Ningxia, Shaanxi, Shanxi, Henan, Hubei, Sichuan). Remarks. The species is similar to S. acutitheca Niu & Wei, 2010 but differs from it in the ovipositor sheath distinctly shorter than middle tibia, the apical sheath very narrow in lateral view and acute at apex, the middle breadth of apical sheath about half breadth of the apex of hind tibia; the serrulae weakly sclerotized and almost flat, the 10 th serrula with 10–12 minute teeth; the postocellar area as broad as long; the interspaces between punctures on mesonotum microsculptured, almost mat; the abdominal tergite 1 weakly microsculptured, tergites 2–9 hardly microsculptured; and the first pulvillus small, distinctly shorter than half apical breadth of metabasitarsus.Published as part of Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), pp. 41-68 in Zootaxa 3746 (1) on page 51, DOI: 10.11646/zootaxa.3746.1.2, http://zenodo.org/record/28530
Standing waves in the Maxwell-Schrödinger equation and an optimal configuration problem
No full textWe study the system of Maxwell-Schro ̈dinger equations
∆u−u−δuψ+f(u)=0, ∆ψ+u2 =0 in RN, where δ>0, u,ψ:RN→R, u,ψ>0, u,ψ→0 as |x|→+∞, and f:R→R,N≥3. We
prove that the set of solutions has a rich structure; more precisely, for any integer K there exists
δK>0 such that, for 0<δ<δK, the system has a solution (uδ,ψδ) with the property that uδ
has K spikes centered at the points Q_δ1,...,Q_δK. Furthermore, for lδ = mini̸=j |Q_δi −Q_δj|, then,
as δ → 0, ((1/lδ) Q_δ1,...,(1/lδ) Q_δK) approaches an optimal configuration for the following maximization problem:
max{Σi≠j 1/|Q_i-Q_j|^{N-2} |(Qi,...,QK)∈R^NK,|Q_i-Q_j|≥1 for i≠j
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