One new species Bryophaenocladius alpinus Deng&Zhang sp.nov.is described and illustrated based on adult males collected from China.The adult males can be distinguished by the third palpomere with a digitiform proj...One new species Bryophaenocladius alpinus Deng&Zhang sp.nov.is described and illustrated based on adult males collected from China.The adult males can be distinguished by the third palpomere with a digitiform projection but without sensilla clavata,anal point broad triangular,inferior volsella sub-rectangular-shaped and covered with setae,gonostylus broad triangular,and crista dorsalis welldeveloped.展开更多
The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One spec...The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One species misidentification is corrected.A key to the males of Stenochironomus in China is given.展开更多
A new species of Paratendipes Kieffer, P. angustus sp. nov., is described and the male is illustrated. P. subaequalis （Malloch, 1915） is recorded in China for the first time.
A new species, Eukiefferiella celata sp. nov., and a newly recorded species, E. brehmi Gouin, 1943, are described and illustrated as male imagines. A new synonym is proposed： E. togaeuquinta Sasa ＆ Okazawa, 1992, sy...A new species, Eukiefferiella celata sp. nov., and a newly recorded species, E. brehmi Gouin, 1943, are described and illustrated as male imagines. A new synonym is proposed： E. togaeuquinta Sasa ＆ Okazawa, 1992, syn. nov. （= E. brehmi）.展开更多
A new species of Stictochironomus Kieffer, S. juncaii sp. nov. from China is described and illustrated as male imago. S. multannulatus （Tokunaga） and S. pictulus （Meigen） are recorded in China for the first time. ...A new species of Stictochironomus Kieffer, S. juncaii sp. nov. from China is described and illustrated as male imago. S. multannulatus （Tokunaga） and S. pictulus （Meigen） are recorded in China for the first time. A key to the males of Stictochironomus in China is given. All specimens are deposited in the College of Life Science, Nankai University, China （BDN）.展开更多
The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive per...The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load. The results show that maximum thrust can be achieved with the pitching axis at the trailing edge, but the highest propulsive efficiency can be achieved with the pitching axis either 1/3 of the chord length from the leading edge in modified Bose mode, or 2/3 of the chord length from the leading edge in cantilever beam mode. At the same time, the effects of the Strouhal number and maximal attack angle on the hydrodynamics performance of the flexible fin were analyzed. Parameter interval of the maximum thrust coefficient and the highest propulsive efficiency were gained. If the Strouhal number is low, high propulsive efficiency can be achieved at low αmax , and vice versa.展开更多
基金the financial support from Science and Technology Commission of Shanghai Municipality(1905050190019DZ1204504)。
文摘One new species Bryophaenocladius alpinus Deng&Zhang sp.nov.is described and illustrated based on adult males collected from China.The adult males can be distinguished by the third palpomere with a digitiform projection but without sensilla clavata,anal point broad triangular,inferior volsella sub-rectangular-shaped and covered with setae,gonostylus broad triangular,and crista dorsalis welldeveloped.
基金supported by the Zhejiang Provincial Natural Science Foundation of China (Y3100486)the National Natural Science Foundation of China (30570207, J0630963)Fauna of China (FY120100)
文摘The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One species misidentification is corrected.A key to the males of Stenochironomus in China is given.
基金supported by Zhejiang Provincial Natural Science Foundation of China(Y3100486)the National Natural Science Foundation of China(30570207,J0630963)Fauna of China(FY120100)
文摘A new species of Paratendipes Kieffer, P. angustus sp. nov., is described and the male is illustrated. P. subaequalis （Malloch, 1915） is recorded in China for the first time.
基金supported by the Zhejiang Provincial Natural Science Foundation of China (Y3100486, Y3110395)the National Natural Science Foundation of China (30570207, J0630963)+1 种基金Fauna of China (FY120100)the Science Foundation of Taizhou University (2012QN18)
文摘A new species, Eukiefferiella celata sp. nov., and a newly recorded species, E. brehmi Gouin, 1943, are described and illustrated as male imagines. A new synonym is proposed： E. togaeuquinta Sasa ＆ Okazawa, 1992, syn. nov. （= E. brehmi）.
基金This project was supported by the National Natural Science Foundation of China (30570207, J0630963)Fauna of China (FY120100)
文摘A new species of Stictochironomus Kieffer, S. juncaii sp. nov. from China is described and illustrated as male imago. S. multannulatus （Tokunaga） and S. pictulus （Meigen） are recorded in China for the first time. A key to the males of Stictochironomus in China is given. All specimens are deposited in the College of Life Science, Nankai University, China （BDN）.
基金Supported by the National Natural Science Foundation of China under Grant No.50879031
文摘The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load. The results show that maximum thrust can be achieved with the pitching axis at the trailing edge, but the highest propulsive efficiency can be achieved with the pitching axis either 1/3 of the chord length from the leading edge in modified Bose mode, or 2/3 of the chord length from the leading edge in cantilever beam mode. At the same time, the effects of the Strouhal number and maximal attack angle on the hydrodynamics performance of the flexible fin were analyzed. Parameter interval of the maximum thrust coefficient and the highest propulsive efficiency were gained. If the Strouhal number is low, high propulsive efficiency can be achieved at low αmax , and vice versa.
基金supported by the National Natural Science Foundation of China (31101653,30870329)Fauna of China (FY120100)+1 种基金Tianjin City High School Science & Technology Fund Planning Project (20090608)Tianjin Normal University Talent Introduction Foundation (5RL104)
文摘One new species, Paracladopelma demissum sp. nov., from Sichuan Province in China, is described and illustrated.
