154,813 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′
No full textFirst 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)
Editorial Comment [International Braz J Urol. V. 37, 4]
No full textEditorial comment. pp.441-442. In INTERNATIONAL BRAZ J UROL - ISSN:1677-5538 vol. 3
Illustration of the predictive distributions for two different players (Left: J. C. Kim; Right: B. H. Lee).
No full textIllustration of the predictive distributions for two different players (Left: J. C. Kim; Right: B. H. Lee).</p
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
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
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Measurement of the B0–B0 oscillation frequency Δmd with the decays B0→D−π+ and B0→ J/ψK∗0
No full textThe B
0
–B
0
oscillation frequency Δmd is measured by the LHCb experiment using a dataset corresponding
to an integrated luminosity of 1.0 fb−1
of proton–proton collisions at √
s = 7 TeV, and is found to be
Δmd
=0.5156±0.0051 (stat.)±0.0033 (syst.) ps−1
. The measurement is based on results from analyses
of the decays B
0
→ D
−π
+ (D
−
→ K
+π
−π
−) and B
0
→ J/ψK
∗0
(J/ψ →μ
+μ
−,K
∗0
→ K
+π
−) and
their charge conjugated modes
Dose- and time-dependent effects of recombinant human bone morphogenetic protein-2 on the osteogenic and adipogenic potentials of alveolar bone-derived stromal cells
No full textPark J-C, Kim J.C, Kim B-K, Cho K-S, Im G-I, Kim B-S, Kim C-S. Dose- and time-dependent effects of recombinant human bone morphogenetic protein-2 on the osteogenic and adipogenic potentials of alveolar bone-derived stromal cells. J Periodont Res 2012; 47: 645654. (C) 2012 John Wiley & Sons A/S Background and Objective: Recombinant human bone morphogenetic protein-2 (rhBMP-2) is a well-known growth factor that can induce robust bone formation, and recent studies have shown that rhBMP-2-induced osteogenesis is closely related to adipogenesis. The aim of the present study was to determine the dose- and time-dependent effects of rhBMP-2 on the osteogenic and adipogenic differentiation of human alveolar bone-derived stromal cells (hABCs) in vivo and in vitro. Material and Methods: hABCs were isolated and cultured, and then transplanted using a carrier treated either with or without rhBMP-2 (100 mu g/mL) into an ectopic subcutaneous mouse model. Comprehensive histologic and histometric analyses were performed after an 8-wk healing period. To further understand the dose-dependent (0, 10, 50, 200, 500 and 1000 ng/mL) and time-dependent (0, 3, 5, 7 and 14 d) effects of rhBMP-2 on osteogenic and adipogenic differentiation, in vitro osteogenic and adipogenic differentiation of hABCs were evaluated, and the expression of related mRNAs, including those for alkaline phosphatase, osteocalcin, bone sialoprotein, peroxisome-proliferator-activated receptor gamma-2 and lipoprotein lipase, were assessed using quantitative RT-PCR. Results: rhBMP-2 significantly promoted the osteogenic and adipogenic differentiation of hABCs in vivo, and gradually increased both the osteogenic and adipogenic potential in a dose- and time-dependent manner with minimal deviation in vitro. The expression of osteogenesis- and adipogenesis-associated mRNAs were concomitantly up-regulated by rhBMP-2. Conclusion: The findings of the present study showed that rhBMP-2 significantly enhanced the adipogenic as well as the osteogenic potential of hABCs in dose- and time-dependent manner. The control of adipogenic differentiation of hABCs should be considered when regenerating the alveolar bone using rhBMP-2.N
Measurement of the branching fraction
No full textThe B
0
s
→ J/ψK
0
S
branching fraction is measured in a data sample corresponding to 0.41 fb−1
of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to
the penguin contributions affecting the sin 2β measurement from B
0
→ J/ψK
0
S
. The time-integrated
branching fraction is measured to be B(B
0
s
→ J/ψK
0
S
) = (1.83±0.28)×10−5
. This is the most precise
measurement to date
Investigation of a Class-J Power Amplifier With a Nonlinear C-out for Optimized Operation
No full textThis paper presents the operation principle of Class-J power amplifiers (PAs) with linear and nonlinear output capacitors (C(out)s). The efficiency of a Class-J amplifier is enhanced by the nonlinear capacitance because of the harmonic generation from the nonlinear C-out, especially the second-harmonic voltage component. This harmonic voltage allows the reduction of the phase difference between the fundamental voltage and current components from 45 degrees to less than 45 degrees while maintaining a half-sinusoidal shape. Therefore, a Class-J amplifier with the nonlinear C-out can deliver larger output power and higher efficiency than with a linear C-out. As a further optimized structure of the Class-J amplifier, the saturated PA, a recently-reported amplifier in our group, is presented. The phase difference of the proposed PA is zero. Like the Class-J amplifier, the PA uses a nonlinear C-out to shape the voltage waveform with a purely resistive fundamental load impedance at the current source, which enhances the output power and efficiency. The PA is favorably compared to the Class-J amplifier in terms of the waveform, load impedance, output power, and efficiency. These operations are described using both the ideal and real models of the transistor in Agilent Advanced Design System. A highly efficient amplifier based on the saturated PA is designed by using a Cree GaN HEMT CGH40010 device at 2.14 GHz. It provides a power-added efficiency of 77.3% at a saturated power of 40.6 dBm (11.5 W).X116069sciescopu
Symplocarpus koreanus J. S. Lee, S. H. Kim & S. C. Kim 2021
No full textSymplocarpus koreanus J.S. Lee, S.H. Kim & S.C. Kim (2021: 2) Isotype: KOREA, Gangwon-do: Chuncheon-si, Sabuk-myeon, Goseong-ri, Mt. Yonghwasan, 21 March 2020, S. C. Kim 200321500 (NIBRVP815477; Fig. 1 -23). Paratypes: KOREA, Gyeonggi-do: Gapyeong-gun, Buk-myeon, Baekdun-ri, Mt. Yeoninsan, 3 May 2013, W. B . Lee s.n. (NIBRVP517078); Gapyeong-gun, Oeseo-myeon, Mt. Hwayasan, 26 June 2007, W. K. Paik VP-KB-377062-0173 (NIBRVP815507); Gapyeonggun, Sang-myeon, Haenghyeon-ri, Mt. Chungnyeongsan, 31 March 2012, J. H . Kim, Y. J. Kim & I. S. Yoon KIMJH12006 (3 sheets, NIBRVP355001); Gapyeong-gun, Sang-myeon, Haenghyeon-ri, Mt. Chungnyeongsan, 29 March 2016, G. H . Nam, J. H. Kim & J. K. Hong L 16001 (NIBRVP550794); Gapyeong-gun, Seorak-myeon, Mt. Yumyeongsan, 4 April 2008, B. K . Kwon 080404-375 (NIBRVP532404); Gapyeong-gun, Seorak-myeon, Mt. Yumyeongsan, 4 April 2008, G. Y . Chung ANH-en-080404- 001 (NIBRVP197125); Hanam-si, Baealmi-dong, Mt. Geomdansan, 3 April 2007, J. O . Hyun, H. K. Park & J. A. Eom VP-NAPI-377054-092 (NIBRVP111433); Namyangju-si, Hwado-eup, Mt. Cheonmasan, 15 April 2007, W. K . Paik VP-KB-377061-0133 (NIBRVP815506); Namyangju-si, Hwado-eup, Mt. Cheonmasan, 22 March 2013, Song et al. s.n. (NIBRVP464822); Namyangjusi, Onam-eup, Onam-ri, Mt. Cheonmasan, 6 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS 15 (NIBRVP206699); Namyangjusi, Onam-eup, Onam-ri, Mt. Cheonmasan, 6 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS16 (2 sheets, NIBRVP206700); Namyangju-si, Mt. Chungnyeongsan, 28 March 1999, S. P . Hong & K. W. Park 411 (NIBRVP102296). Gangwon-do: Cheorwon-gun, Geunnam-myeon, Mt. Gwangdeoksan, 12 May 1997, S. P . Hong & H. S. Choi 99 (NIBRVP102297); Donghae-si, Bugok-dong, Mita Temple, 26 April 2011, G. H . Nam & W. J. Jeong SHY2-34 (NIBRVP284290); Gangneung-si, Wangsan-myeon, Mt. Hwaranbong, 30 April 2009, J. H . Kim & H. J. Kim VP-KB-0904-0071 (NIBRVP318582); Hwacheon-gun, Mt. Baekjeoksan, 24 May 2000, K . Ch. Yang & J. D. Jung s.n. (NIBRVP102304, NIBRVP102305); Hwacheon-gun, Mt. Baekjeoksan, 3 August 2000, J. H . Kim & D. K. Kim 49 (NIBRVP102307); Hwacheon-gun, Sanae-myeon, Mt. Gwangdoeksan, 7 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS24 (2 sheets, NIBRVP206708); Hwacheon-gun, Sanae-myeon, Mt. Gwangdoeksan, 7 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS25 (2 sheets; NIBRVP206709). Chungcheongbuk-do: Danyang-gun, Gagok-myeon, Mt. Sobaecksan, 17 May 1999, C. W . Park, H. W. Lee & J. Koh 10315 (NIBRVP815505); Danyang-gun, Gagok-myeon, Mt. Sobaeksan, 20 April 2007, G. Y . Chung ANH-en-070420-013 (NIBRVP121631). Jeollabuk-do: Jangsu-gun, Gyenam-myeon, Jangan-ri, 21 September 1997, B. Y . Sun & C. H. Kim 10361 (NIBRVP815504); Jangsu-gun, Gyenam-myeon, Mt. Jangansan, 19 May 2007, B. Y . Sun 2271 (NIBRVP128343); Jangsu-gun, Gyenam-myeon, Mt. Jangansan, 19 June 2009, J. K . Ahn, S. J. Lee & Y. W. Lee CH 40006 (NIBRVP266477); Jangsu-gun, Gyenammyeon, Mt. Jangansan, 19 June 2009, J. K . Ahn, S. J. Lee & Y. W. Lee CH 40239 (NIBRVP266707); Jinan-gun, Jucheon-myeon, Daebul-ri, Mt. Unjangsan, without date, C. H . Kim & S. H. Lee 50051 (3 sheets, NIBRVP537859). Gyeongsangnam-do: Geochanggun, Buksang-myeon, Mt. Deogyusan hyangjeokbong-satgatgoljae, 31 May 2006, B. Y . Sun 1577 (4 sheets, NIBRVP119643). Note: The holotype is deposited in SKK.Published as part of Jang, Hyun-Do, Hyun, Chang-Woo, Ryu, Seah & Lee, Sang-Jun, 2022, Type specimens of vascular plants in the herbarium of the National Institute of Biological Resources (II), pp. 229-243 in Phytotaxa 539 (3) on page 237, DOI: 10.11646/phytotaxa.539.3.2, http://zenodo.org/record/636408
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
No full textThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
- …
