31,108 research outputs found
Influence of ventilation closures on plant growth parameters, acclimation and anatomy of leaf surface in Scrophularia yoshimurae Yamazaki - a medicinal plant native to Taiwan
No full textDifferent ventilation closures, including aluminum foil (AF) and a varying number of dispense papers (DP) had different effects on leaf growth parameters, in vitro rooting, survival rate and the anatomical features of the leaf surface of in vitro and ex vitro acclimated plants of Scrophularia yoshimurae—an important medicinal plant. The lowest plant growth parameters and ex vitro acclimation rate (<7.0%) were obtained using AF as ventilation closure. A scanning electron microscopy (SEM) study of leaf surfaces of plants derived from different ventilation closure treatments showed that parameters—including density and size of epidermal cell and stomata, size of guard cells, and stomata aperture-differed significantly among various treatments, and this in turn affected plant survival rate. Leaves derived from AF treatment had higher epidermal cell (15094 cells/mm2) and stomata (38/mm2) densities than DP treatments. Well-ventilated container closures, such as with DP, improved the morphological characteristics of leaves and in turn enhanced the survival rate during ex vitro acclimation (maximum rate being 66.7%). The present study not only provides an improved micropropagation method of S. yoshimurae but also gives scientific reasons for the different acclimation rates obtained with various container closures
Stegana (Steganina) biprotrusa Chen & Aotsuka 2004
No full textI. Stegana (Steganina) biprotrusa species group (5 spp.) acantha Wu, Gao, & Chen, 2010; China (Hainan). ancistrophylla Wu, Gao, & Chen, 2010; China (Guangdong, Guangxi, Guizhou *, Yunnan *). langufoliacea Wu, Gao, & Chen, 2010; China (Taiwan, Guangxi, Yunnan*). otocondyloda Wu, Gao, & Chen, 2010; China (Yunnan). iaspidea Zhang & Chen, sp. nov.; China (Yunnan).Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on page 104, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
Stegana (Steganina) jianfenglingensis Chen, Gao, & Chen 2009
No full text<i>Stegana</i> (<i>Steganina</i>) <i>jianfenglingensis</i> Chen, Gao, & Chen, 2009 <p> <i>Stegana</i> (<i>Steganina</i>) <i>jianfenglingensis</i> Chen, Gao, & Chen in Chen <i>et al.</i> 2009: 1914.</p> <p> <b>Specimens examined.</b> CHINA: 1♂ (SCAU, Nos. 125426, DNA #2656), Nonggang, Longzhou, Guangxi, 22°32'26''N, 106°43'18''E, alt. 230m, 23.viii.2004, ex tree trunk, H.W. Chen.</p> <p> <b>Distribution.</b> China (Hainan, Guangxi *).</p>Published as part of <i>WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1)</i> on page 49, DOI: 10.11646/zootaxa.5250.1.1, <a href="http://zenodo.org/record/7705657">http://zenodo.org/record/7705657</a>
Scattering Amplitudes of Massive N=2 Gauge Theories in Three Dimensions
Full text linkWe study the scattering amplitudes of mass-deformed Chern-Simons theories and Yang-Mills-Chern-Simons theories with N=2 supersymmetry in three dimensions. In particular, we derive the on-shell supersymmetry algebras which underlie the scattering matrices of these theories. We then compute various 3 and 4-point on-shell tree-level amplitudes in these theories. For the mass-deformed Chern-Simons theory, odd-point amplitudes vanish and we find that all of the 4-point amplitudes can be encoded elegantly in superamplitudes. For the Yang-Mills-Chern-Simons theory, we obtain all of the 4-point tree-level amplitudes using a combination of perturbative techniques and algebraic constraints and we comment on difficulties related to computing amplitudes with external gauge fields using Feynman diagrams. Finally, we propose a BCFW recursion relation for mass-deformed theories in three dimensions and discuss the applicability of this proposal to mass-deformed N=2 theories
Stegana (Steganina) multidentata Chen, Gao, & Chen 2009
No full text<i>Stegana</i> (<i>Steganina</i>) <i>multidentata</i> Chen, Gao, & Chen, 2009 <p>(Fig. 5I, J)</p> <p> <i>Stegana</i> (<i>Steganina</i>) <i>multidentata</i> Chen, Gao, & Chen in Chen <i>et al.</i> 2009: 1917.</p> <p> <b>Specimens examined.</b> CHINA: 2♂, 5♀ (SCAU, Nos. 125419–25, DNA #2472), CHINA: Gexigou, Yajiang, Sichuan, 30°02'58''N, 100°57'36''E, alt. 2800m, 4.vi.2018, ex tussocks, Y. Lin, Y.L. Wang.</p> <p> <b>Distribution.</b> China (Hubei, Sichuan *).</p>Published as part of <i>WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1)</i> on page 50, DOI: 10.11646/zootaxa.5250.1.1, <a href="http://zenodo.org/record/7705657">http://zenodo.org/record/7705657</a>
Stegana (Steganina) cyclophylla Chen & Chen 2009
No full text<i>Stegana</i> (<i>Steganina</i>) <i>cyclophylla</i> Chen & Chen, 2009 <p> <i>Stegana</i> (<i>Steganina</i>) <i>cyclophylla</i> Chen & Chen, 2009a: 497.</p> <p> <b>Specimen examined.</b> CHINA: 1♂ (SCAU, No. 125519, DNA #459), Nonggang, Longzhou, Guangxi, 22°32'26''N, 106°43'18''E, alt. 540m, 23, 24.viii.2004, ex tree trunks, H.W. Chen.</p> <p> <b>Distribution.</b> China (Guangxi *, Yunnan).</p>Published as part of <i>WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1)</i> on page 50, DOI: 10.11646/zootaxa.5250.1.1, <a href="http://zenodo.org/record/7705657">http://zenodo.org/record/7705657</a>
Phortica (Phortica) jadete Zhu, Cao & Chen 2018
No full textPhortica (Phortica) jadete Zhu, Cao & Chen, 2018 Phortica (Phortica) jadete Zhu, Cao & Chen, 2018: 8. Diagnosis. Paramere submedially with 1 expanded, suberect lobe-like process, and apically bifurcated: the anterior branch with 1 strong, pointed tooth, the posterior branch with 2 acute processes (as fig. 2D in Zhu et al. 2018). Specimens examined. CHINA: 3♂ (SCAU), Mengma, Menglian, Yunnan, 22°13'44''N, 99°22'37''E, alt. 1140m, 14.iv.2018, H.W. Chen, L. Gong, Y. Lin; 1♂ (SCAU), Muyiji Park, Ximeng, Yunnan, 22°37'15''N, 99°35'42''E, alt. 1200m, 16.iv.2018, H.W. Chen; 2♂ (SCAU), Moli Forest Park, Ruili, Yunnan, 24°07'05''N, 97°58'51''E, alt. 920m, 23.iv.2018, H.W. Chen, L. Gong. Distribution. China (Yunnan).Published as part of Huang, Jia, Gong, Lu, Tsaur, Shun-Chern, Zhu, Lin, An, Keying & Chen, Hongwei, 2019, Revision of the subgenus Phortica (sensu stricto) (Diptera, Drosophilidae) from East Asia, with assessment of species delimitation using DNA barcodes, pp. 1-75 in Zootaxa 4678 (1) on page 42, DOI: 10.11646/zootaxa.4678.1.1, http://zenodo.org/record/346878
Uniqueness of topological solutions and the structure of solutions for the Chern-Simons system with two Higgs particles
No full textStegana biprotrusa Chen & Aotsuka 2004
No full textStegana biprotrusa species group Stegana (Steganina) biprotrusa species group Wu, Gao, & Chen in Wu et al. 2010: 47. Diagnosis. Articulating plate of aedeagus (ap aed) developed, bifurcated, mostly sclerotized, and separated from hypandrium (e.g., Fig. 15C).Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on page 19, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
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