Search

Your search keyword '"Yang, Shu-qi"' showing total 17 results
Start Over Author "Yang, Shu-qi" Publication Year Range Last 50 years
17 results on '"Yang, Shu-qi"'

2. Testing the light scalar meson as a non-$q\bar q$ state in semileptonic $D$ decays

Author

Hsiao, Yu-Kuo, Yang, Shu-Qi, Wei, Wen-Juan, and Ke, Bai-Cian

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract

To distinguish between the normal $q\bar q$ and exotic diquark-antidiqark ($q^2\bar q^2$) contents of the lowest-lying scalar meson ($S_0$), we investigate the semileptonic $D\to S_0 e^+\nu_e, S_0\to M_1 M_2$ decays, where $M_{1(2)}$ represents a pseudoscalar meson. With the form factors extracted from the current data, we calculate ${\cal B}(D_s^+\to \sigma_0 e^+\nu_e,\sigma_0\to\pi^0\pi^0) =(12.9^{+6.3}_{-4.9})\times 10^{-4}$ and $(0.8^{+1.2}_{-0.7})\times 10^{-4}$ for the $q\bar q$ and $q^2\bar q^2$ quark structures, respectively, and compare them to the experimental upper limit: $6.4\times 10^{-4}$. It is clearly seen that $S_0$ prefers to be the $q^2\bar q^2$ bound state. Particularly, ${\cal B}_{q\bar q}(D_s^+\to \sigma_0 e^+\nu_e,\sigma_0\to\pi^+\pi^-) =(25.8^{+12.5}_{-\;\,9.8})\times 10^{-4}$ and ${\cal B}_{q^2\bar q^2}(D_s^+\to \sigma_0 e^+\nu_e,\sigma_0\to\pi^+\pi^-) =(1.5^{+2.4}_{-1.3})\times 10^{-4}$ are predicted to deviate far from each other, useful for a clear experimental investigation., Comment: 10 pages, 1 figure, 1 table

Published
2023

10. Colletotrichum juglandis sp. nov. (Ascomycota: Glomerellaceae) associated with walnut leaf spot in China

Author

Wei, Xin, Yang, Shu Qi, Jiang, Zhi Gang, Cui, Meng Jiao, Deng, Jian Xin, and Zhang, Yi

Subjects
Dermateaceae, Ascomycota, Leotiomycetes, Fungi, Biodiversity, Helotiales, Plant Science, Ecology, Evolution, Behavior and Systematics, Taxonomy
Abstract

Colletotrichum species are destructive pathogens, saprobes and endophytes on various plant hosts. However, the species occurring on walnut remains largely unresolved. Walnut leaf spot occurred seriously in orchards of Xingshan County, Hubei Province in China. To determine Colletotrichum spp. associated with Juglans regia, 22 isolates were obtained from the diseased leaf samples collected during 2019 and 2020. Seven isolates were further selected as representatives based on morphology and phylogeny using ITS, GAPDH, CHS-1 and ACT gene regions. The results revealed that the isolates belonged to two phylogenetic species complexes, C. gloeosporioides species complex (CGSC) comprising C. gloeosporioides and C. kahawae, and C. acutatum species complex (CASC) including C. nymphaeae, C. godetiae, C. fioriniae and a new species, namely Colletotrichum juglandis sp. nov.. Among them, C. kahawae was firstly reported from walnut.

Published
2022

11. Colletotrichum juglandis X. Wei & J. X. Deng 2022, sp. nov

Author

Wei, Xin, Yang, Shu Qi, Jiang, Zhi Gang, Cui, Meng Jiao, Deng, Jian Xin, and Zhang, Yi

Subjects
Dermateaceae, Ascomycota, Leotiomycetes, Fungi, Colletotrichum, Biodiversity, Helotiales, Colletotrichum juglandis, Taxonomy
Abstract

Colletotrichum juglandis X. Wei & J.X. Deng, sp. nov. Fig. 3 MycoBank No: 843086. Etymology: In reference to the host genus name, Juglans. Type. China, Hubei Province, Yichang city, Xingshan county on infected leaves of Juglans regia. 11 July, 2019, J. X. Deng (ex-type culture YZU 191277) Description: Colonies on PDA attaining 47–52 mm diam. after 7 days at 25 °C, whitish to gray, dense, aerial mycelium with masses of conidial ooze. Conidia on SNA unicellular, hyaline, smooth-walled, aseptate, straight, subcylindrical to fusiform with one end round and one end slightly acute, 6–15×2–5 μm (av.: =10.8×4.1, n =50). Appressoria single, brown to dark brown, smooth-walled, variable in shape, irregular unlobed or slightly lobed, 6–17× 4–10 μm (av.: =9.3×6.4, n =30). Chlamydospores formed laterally on hyphae. Setae absent. Sexual morph not observed. Materials examined: China, Hubei Province, Yichang City, Xingshan County, Walnut orchard, from the leaf of Juglans regia anthracnose 11 July, 2020, X. Wei, living cultures YZU 191277 and YZU 201192. Note: This species belongs to C. acutatum species complex (Fig. 1) and forms a mono-lineage in a clade comprising C. chrysanthemi, C. cosmi, C. guajavae, C. nymphaeae, C. scovillei, and C. walleri with 1.0/100% (PP/BS) values. It is phylogenetically close related to C. nymphaeae, C. guajavae, C. scovillei and C. chrysanthemi. Morphologically, it is readily differentiated with C. chrysanthemi by conidia shape and distinct from the other three species by producing larger appressoria (Table 2). In addition, C. guajavae and C. scovillei produce conidia with acute ends (Damn et al. 2012a), which is not observed in this species. Pathogenicity tests Pathogenicity tests revealed that Colletotrichum juglandis sp. nov. from Juglans regia could induced necrotic symptoms on living leaves by the spore suspension of isolate YZU 191277. After 7 days, the disease symptoms caused by spore suspension were around 4.3 mm in diameter (Fig. 3B), while symptomless on controls. After re-isolation, the same pathogen was obtained and identified based on morphology., Published as part of Wei, Xin, Yang, Shu Qi, Jiang, Zhi Gang, Cui, Meng Jiao, Deng, Jian Xin & Zhang, Yi, 2022, Colletotrichum juglandis sp. nov. (Ascomycota: Glomerellaceae) associated with walnut leaf spot in China, pp. 256-268 in Phytotaxa 556 (3) on pages 263-264, DOI: 10.11646/phytotaxa.556.3.2, http://zenodo.org/record/6972824

Published
2022
Full Text
View/download PDF

14. Research on Multiband Observations of X-ray Millisecond Pulsar J0437-4715

Author

Cai Hong-bing, Zhou Jian-feng, Chen Ding, Du Yuan-jie, and Yang Shu-qi

Subjects
Physics, media_common.quotation_subject, Astronomy, Astronomy and Astrophysics, Astrophysics, Astrometry, Binary pulsar, Wavelength, Pulsar, Space and Planetary Science, Millisecond pulsar, Sky, Calibration, Parkes Observatory, media_common
Abstract

A study on the two-band observations of the millisecond pulsar J0437- 4715 is carried out based on the radio data of the Parkes Observatory of Australia and the X-ray data obtained with the ASM (All Sky Monitor) in the RXTE (Rossi X-ray Timing Explorer). For the radio observations of J0437-4715 the software TEMPO2 is applied to the calibration of the timing data of different terminal systems, thereby improving the accuracy of the timing model. By taking advantage of the all-weather observations of the ASM in the RXTE, the study of the medium- and long-term light variations of the pulsar J0437-4715 at the X-ray wavelengths is carried out by means of structure function, and it is found that this pulsar has a 620 d light period in the X-ray waveband.

Published
2013

16. Li4V2Mn(PO4)4-stablized Li[Li0.2Mn0.54Ni0.13Co0.13]O2cathode materials for lithium ion batteries

Author

Yang, Shu-qi, Wang, Peng-bo, Wei, Han-xin, Tang, Lin-bo, Zhang, Xia-hui, He, Zhen-jiang, Li, Yun-jiao, Tong, Hui, and Zheng, Jun-chao

Abstract

Li-rich Mn-based cathode materials are regarded as promising cathode materials for Li-ion batteries (LIBs) owing to their high electrochemical capacity and low cost. However, residual Li compounds on the surface and dissolution of metal ions cause severe degradation of the electrochemical performance, thereby hindering their practical applications. Li4V2Mn(PO4)4is a composite cathode material with three-dimensional Li-ion diffusion channels and a stable structure at high operating voltages (>4.5 V). Herein, we modify the surface of Li[Li0.2Mn0.54Ni0.13Co0.13]O2with Li4V2Mn(PO4)4. The Li4V2Mn(PO4)4coating layer can not only reduce the content of residual Li compounds on the surface but also restrain the dissolution of transition metals. Theoretical calculations illustrate that Li4V2Mn(PO4)4reduces the Li-ion diffusion energy barrier and provides efficient diffusion pathways. Li[Li0.2Mn0.54Ni0.13Co0.13]O2@Li4V2Mn(PO4)4compounds deliver a discharge capacity of 300 mAh g−1with a high initial coulombic efficiency (84.2%) and an excellent cycling stability (capacity retention of 78.1% after 200 cycles at 1C). Hence, the proposed modification strategy of phosphate-based materials could shed light on the structural design of surface-sensitive electrode materials for LIBs.

Published
2019
Full Text
View/download PDF

17. A cross-sectional study on the effect of dietary zinc intake on the relationship between serum vitamin D 3 and HOMA-IR.

Author

Hu B, Lin ZY, Cai Y, Sun YX, Yang SQ, Guo JL, Zhang S, and Sun DL

Abstract

Introduction: Serum vitamin D 3 concentration is associated with the risk of insulin resistance. Zinc has also been reported to be associated with a lower risk of insulin resistance. In addition, zinc is an essential cofactor in the activation of vitamin D 3 . However, the effect of dietary zinc intake on the relationship between vitamin D 3 and insulin resistance risk has not been fully studied. Therefore, we designed this cross-sectional study to assess the impact of changes in zinc intake on the relationship between vitamin D 3 and insulin resistance risk., Study Design and Methods: This study analyzed data from the national Health and Nutrition Examination Survey (NHANES) from 2005 to 2018, involving 9,545 participants. Participants were stratified by zinc intake category (low zinc intake <9.58 mg/ day; High zinc intake: ≥9.58 mg/ day)., Results: In this cross-sectional study, serum vitamin D 3 levels were independently associated with the risk of insulin resistance in both the low and high Zinc intakes (β: -0.26, 95%Cl: -0.56~0.04 vs. β: -0.56, 95%Cl: -1.01~-0.11). In addition, this association was influenced by different dietary zinc intakes (interaction P < 0.05)., Conclusions: Our results suggest that zinc intake may influence the association between serum vitamin D 3 and the risk of insulin resistance. Further randomized controlled trials are needed to provide more evidence of this finding., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Hu, Lin, Cai, Sun, Yang, Guo, Zhang and Sun.)

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results