16,321 research outputs found
Akanthomyces zaquensis Y. H. Wang, W. J. Wang, Ke Wang, C. H. Dong, J. R. Hao, P. M. Kirk & Y. J. Yao, sp. nov.
No full textAkanthomyces zaquensis Y.H. Wang, W.J. Wang, Ke Wang, C.H. Dong, J.R. Hao, P.M. Kirk & Y.J. Yao, sp. nov. (Figs. 2–4) Fungal Names registration: FN570746. Etymology:— zaquensis, referring to the collecting site near the Za Qu River. Colonies on PDA were rapidly growing, attaining a diameter of 25–28 mm and 30–34 mm within 10 days at 20 and 25 ºC, respectively, round, flat, white. Reverse primrose to pale yellow. Colonies on MEA and PCA attained a diameter of 23–28 mm and 28–31 mm within 10 days at 20 and 25ºC, respectively, round, flat, white. Reverse pale yellow (FIGURE 2). The vegetative hyphae on PDA medium were delicate, hyaline, smooth-walled, 0.4–2.0 μm wide. Phialides occurring directly on the aerial hyphae; simple, 8.0–40.0 µm long, rarely over 100 µm, 0.6–1.2 µm at the base, tapering to about 0.4 µm at the tips. The conidia produced on the three media were one-celled, smooth-walled, hyaline; (1.5–)3.0–6.0(–7.0) × 0.5–1.2(–1.5) µm; adhering in heads at the apex of the phialides, long-ellipsoidal to almost cylindrical (FIGURE 3). The optimum temperature for growth was 5–37 ºC on three media (17–34 mm diameter in 10 d at 15–30 ºC), little growth (usually less than 10 mm diameter) at ≤10 ºC, no growth at ≥ 33 ºC (FIGURE 4). Notes: Akanthomyces zaquensis was isolated from O. sinensis. The species differed from A. lecanii by having bigger conidia. Furthermore, A. zaquensis produced single and lanceolate or narrowly lageniform phialides directly from the aerial hypha. Sexual state:—Unknown. Holotype:— CHINA. Qinghai Province: Yushu Prefecture, Zadoi County, Sulu Country, Duoxiao Village beside the Za Qu River, isolated from both the stroma and the sclerotium of O. sinensis on the ground, 20 May 2002, J.J. Li (holotype HMAS 246915, ex-holotype living culture CGMCC 19934). Other material examined:— CHINA. Qinghai Province: Yushu Prefecture, Zadoi County, Sulu Country, Duoxiao Village beside the Za Qu River, from both the stroma and the sclerotium of O. sinensis on the ground, 20 May 2002, J.J. Li (isotype HMAS 246914, isotype HMAS 246916, isotype HMAS 246917).Published as part of Wang, Yong-Hui, Wang, Wen-Jing, Wang, Ke, Dong, Cai-Hong, Hao, Ji-Rong, Kirk, Paul M. & Yao, Yi-Jian, 2023, Akanthomyces zaquensis (Cordycipitaceae, Hypocreales), a new species isolated from both the stroma and the sclerotium of Ophiocordyceps sinensis in Qinghai, China, pp. 198-208 in Phytotaxa 579 (3) on pages 203-204, DOI: 10.11646/phytotaxa.579.3.5, http://zenodo.org/record/755039
On-load Tap Changer Diagnosis on High-Voltage Power Transformers using Dynamic Resistance Measurements
No full textHigh-voltage transformers have tap changers to regulate the voltage in the high-voltage network when the load changes. Those tap changers are subject to different degradation mechanisms and need regular maintenance. Various defects, like contact degradation, often remain undetected and the probability of maintenance errors cannot be neglected. Preventive diagnosis of dynamic resistance can be used to determine the contact condition and to check the basic function of the tap changer. This can guarantee that the high-voltage transformer can be put back into operation safely after maintenance. In addition, the information obtained can be used for condition-based maintenance. The research of Jur Erbrink elaborates on the condition assessment of tap changers using dynamic resistance measurements. He describes in his thesis the different ways in which the measurements can be performed and how this influences the measurement results. In particular it was emphasized that the dynamic resistance measurements at a lower the test current are more sensitive for long term aging effects. It is also investigated which defects can be detected and how the results can be interpreted.High Voltage Technology and ManagementElectrical Engineering, Mathematics and Computer Scienc
Stegana (Steganina) tiani Wang, Gao, & Chen 2011
No full text<i>Stegana</i> (<i>Steganina</i>) <i>tiani</i> Wang, Gao, & Chen, 2011 <p> <i>Stegana</i> (<i>Steganina</i>) <i>tiani</i> Wang, Gao, & Chen in Wang <i>et al.</i> 2011: 508.</p> <p> <b>Specimen examined.</b> CHINA: 1♀ (SCAU, No. 125236, DNA #2658), Menglun, Mengla, Yunnan, 21°47'29''N, 101°22'59''E, alt. 560m, 17.iv.2007, ex tree trunk, J.J. Gao.</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 41, DOI: 10.11646/zootaxa.5250.1.1, <a href="http://zenodo.org/record/7705657">http://zenodo.org/record/7705657</a>
Stegana (Steganina) cylindrica Wang, Gao, & Chen 2013
No full text<i>Stegana</i> (<i>Steganina</i>) <i>cylindrica</i> Wang, Gao, & Chen, 2013 <p> <i>Stegana</i> (<i>Steganina</i>) <i>cylindrica</i> Wang, Gao, & Chen in Wang <i>et al.</i> 2013: 1997.</p> <p> <b>Specimens examined.</b> CHINA: 2♀ (SCAU, Nos. 125520, 21, DNA #2716), Nonggang, Longzhou, Guangxi, 22°32'26''N, 106°43'18''E, alt. 230m, 28.xi.2019, ex tree trunks, H.W. Chen; 1♀ (SCAU, No. 125522, DNA #2678), Wangtianshu, Mengla, Yunnan, 21°36'09''N, 101°35'06''E, alt. 660m, 9.v.2012, ex tree trunk, J.J. Gao.</p> <p> <b>Distribution.</b> China (Hainan, 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>
Stegana (Steganina) tongi Wang, Gao, & Chen 2011
No full textStegana (Steganina) tongi Wang, Gao, & Chen, 2011 Stegana (Steganina) tongi Wang, Gao, & Chen in Wang et al. 2011: 510. Specimens examined. CHINA: 1♂, 2♀, Yixiang, Pu’er, Yunnan, 22°44'19''N, 101°07'01''E, alt. 1400m: 1♂ (SCAU, No. 125237, DNA #2601) on 2.x.2011, ex tree trunk, H.W. Chen, 2♀ (SCAU, Nos. 125238, 39, DNA #2192) on 28–30.iii.2013, ex tussocks, J.J. Gao; 1♂, 1♀ (SCAU, Nos. 125240, 41, DNA #2633), Menglun, Mengla, Yunnan, 21°47'29''N, 101°22'59''E, alt. 560m, 19.xii.2017, ex tree trunks, H.W. Chen, L. Gong. Distribution. China (Taiwan, Guangdong, Hainan, Guangxi, 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 41, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
Public Programs at The New York Public Library.
No full textAmong the varied programs offered by the Library during the Spring, a series of lectures, Fables: From Aesop to La Fontaine, gets a page of recognition. The series is done by Marcel M. Gutwirth. It is meant to support and coincide with the Library's La Fontaine: The Power of Fables exhibition, co-curated by Paul LeClerc. The booklet features eight outstandingly-reproduced engravings by J.J. Grandville, including the cover engraving of the two high-society goats unable to pass through the doorway at the same time.Paul LeClerc
Isotherms and kinetics of cesium and strontium sorption by selected subtropical and tropical soils around nuclear facilities.
No full textOn static and fatigue strength determination of carbon fibre/epoxy composites Part 1: experiments
No full textThis work seeks to investigate the static and fatigue properties and the failure mechanisms of T300/QY8911 carbon-fibre-reinforced composite laminates with different layups to optimize the stacking sequence effect. Three different layups have been studied, namely, [45/0(2)/–45/90(2)/–45/0/45/90]s, [45/–45/0/–45/0/45/90/45/0/–45]s and [45/0/–45/0/45/0/45/0/90/0]s. The results for static strength and fatigue residual strength under different fatigue stress amplitudes are evaluated and compared with each other. The damage and failure mechanisms of the composite laminates are discussed. It is observed that all tension–tension fatigue damage patterns of the notched laminates are similar while the tension–tension fatigue properties vary with the laminate layup. The reduction of stress concentration caused by the tension–tension fatigue damage leads to an improvement of the residual strength of the notched specimens in contrast to their static strength properties. The damage mechanics of the notched laminates under compression–compression loading are more complex than those of the tension–tension fatigue specimens; their damage patterns are influenced by the test clamping fixture, the layup, the size of specimens and the diameter of the hole. The residual strengths are lower than those of the specimens without fatigue damage. It is verified that in a high-temperature and moisture environment, there is a decrease in static compression strength. The results of this study provide an insight into fatigue damage development in composites and constitute a fundamental basis for the development of a strain-based residual strength model
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