Ectatosticta spiders from the Qinghai-Tibet Plateau were studied.Multilocus molecular and morphological data identified 16 putative species,including seven new species:Ectatosticta wenshu Lin&S.Li sp.nov.,Ectatost...Ectatosticta spiders from the Qinghai-Tibet Plateau were studied.Multilocus molecular and morphological data identified 16 putative species,including seven new species:Ectatosticta wenshu Lin&S.Li sp.nov.,Ectatosticta baima Lin&S.Li sp.nov.,Ectatosticta helii Lin&S.Li sp.nov.,Ectatosticta shaseng Lin&S.Li sp.nov.,Ectatosticta puxian Lin&S.Li sp.nov.,Ectatosticta qingshi Lin&S.Li sp.nov.,and Ectatosticta baixiang Lin&S.Li sp.nov.This increase in the number of Ectatosticta species from a single species in 2008 to 16 in the current study highlights the Linnean shortfall in China.The previously known distribution of Ectatosticta spiders was from one locality in Shaanxi and is now expanded to the east and south of the Qinghai-Tibet Plateau.展开更多
Thus far, measurements and estimations of actual evapotranspiration（ET） in extremely arid areas are still insufficient. Based on successive observations from June–September 2014, we simulated ET of a Populus euphra...Thus far, measurements and estimations of actual evapotranspiration（ET） in extremely arid areas are still insufficient. Based on successive observations from June–September 2014, we simulated ET of a Populus euphratica Oliv. forest during the growing season in an extremely arid region of northwest China using the Shuttleworth–Wallace（S–W） model. Simulated ET values were compared to those of the eddy-covariance（EC） method on a 1 h interval. With a root mean square error（RMSE）,relative error（RE） and mean absolute error（MAE） of0.192, 3.100 and 0.165 mm h-1, respectively, model performance was not satisfactory. In particular, on days with strong winds（Sep. 11–13）, deviations between simulated and observed ET values increased to 0.275, 0.878 and0.251 mm h-1, RMSE, RE and MAE respectively. These values were significantly greater than those in other study periods and were most likely owing to sharp increases in wind speed. As a result, there were substantial advective effects, which is not consistent with the assumption of the S–W model that there are no advective effects or mesoscale circulation patterns induced by surface discontinuities.展开更多
Dear Editor,Ureteral stenosis at anastomotic site is a common complication of radical cystectomy with construction of an ileal conduit or an ileal neobladder.Reconstruction is sometimes challenging because of difficul...Dear Editor,Ureteral stenosis at anastomotic site is a common complication of radical cystectomy with construction of an ileal conduit or an ileal neobladder.Reconstruction is sometimes challenging because of difficulty to achieve adequate length of the ureter after resection of the fibrotic ureteral tissue.Here we report a case whose bilateral ureteral stenoses at anastomotic sites were successfully reconstructed using appendicular interposition combined with Wallace anastomosis.展开更多
基金This study was supported by the National Natural Science Foundation of China(32100363,31970396)。
文摘Ectatosticta spiders from the Qinghai-Tibet Plateau were studied.Multilocus molecular and morphological data identified 16 putative species,including seven new species:Ectatosticta wenshu Lin&S.Li sp.nov.,Ectatosticta baima Lin&S.Li sp.nov.,Ectatosticta helii Lin&S.Li sp.nov.,Ectatosticta shaseng Lin&S.Li sp.nov.,Ectatosticta puxian Lin&S.Li sp.nov.,Ectatosticta qingshi Lin&S.Li sp.nov.,and Ectatosticta baixiang Lin&S.Li sp.nov.This increase in the number of Ectatosticta species from a single species in 2008 to 16 in the current study highlights the Linnean shortfall in China.The previously known distribution of Ectatosticta spiders was from one locality in Shaanxi and is now expanded to the east and south of the Qinghai-Tibet Plateau.
基金supported by the Chinese National Nature Science Fund(no.41271037)the Youth Foundation of National Natural Science of China(no.41401033)
文摘Thus far, measurements and estimations of actual evapotranspiration（ET） in extremely arid areas are still insufficient. Based on successive observations from June–September 2014, we simulated ET of a Populus euphratica Oliv. forest during the growing season in an extremely arid region of northwest China using the Shuttleworth–Wallace（S–W） model. Simulated ET values were compared to those of the eddy-covariance（EC） method on a 1 h interval. With a root mean square error（RMSE）,relative error（RE） and mean absolute error（MAE） of0.192, 3.100 and 0.165 mm h-1, respectively, model performance was not satisfactory. In particular, on days with strong winds（Sep. 11–13）, deviations between simulated and observed ET values increased to 0.275, 0.878 and0.251 mm h-1, RMSE, RE and MAE respectively. These values were significantly greater than those in other study periods and were most likely owing to sharp increases in wind speed. As a result, there were substantial advective effects, which is not consistent with the assumption of the S–W model that there are no advective effects or mesoscale circulation patterns induced by surface discontinuities.
文摘Dear Editor,Ureteral stenosis at anastomotic site is a common complication of radical cystectomy with construction of an ileal conduit or an ileal neobladder.Reconstruction is sometimes challenging because of difficulty to achieve adequate length of the ureter after resection of the fibrotic ureteral tissue.Here we report a case whose bilateral ureteral stenoses at anastomotic sites were successfully reconstructed using appendicular interposition combined with Wallace anastomosis.
