Microzoopiankton community composition in the north of South China Sea was investigated during autumn （between September and October）, 2004. Dilution technique using chlorophyll a （Chl a） was employed to estimate ...Microzoopiankton community composition in the north of South China Sea was investigated during autumn （between September and October）, 2004. Dilution technique using chlorophyll a （Chl a） was employed to estimate grazing rates and grazing pressure. The results showed that Polymenophorea Oligotrichida was the dominant group with 16 species, and there were 4 species in Oligotrichina and 11 species in Tintinnina. The ciliates abundance ranged from 9 to 102 ind/m^3, instantaneous growth rates of phytoplankton （k） varied from 0.03 / d to 2.13 / d. Grazing rates of microzooplankton（g） ranged between 0.01 / d and 1.06 / d. The grazing pressure on initial phytoplankton stock （Pi） and primary production （Pp） was 0.089 % - 65.23 % and 33.63 % - 86.04 %, respectively. The grazing of microzooplankton was mainly limited by ciliates abundance. Results of grazing pressure on primary production indicated that microzooplankton played an improtant role in transmitting primary production in the north of South China Sea.展开更多
We presented a case of giant neurofibromas arising from the jejunal mesentery of a 52-year-old man. The patient presented with epigastric fullness, and decrease of food intake, but without stigmata of neurofibromatosi...We presented a case of giant neurofibromas arising from the jejunal mesentery of a 52-year-old man. The patient presented with epigastric fullness, and decrease of food intake, but without stigmata of neurofibromatosis-l. Ultrasonography, computed tomography （CT） and MR imaging revealed two large masses in the abdomen extending to the pelvis. Total resection of the tumors together with corresponding segments of intestines was performed. Histological examination and immunocytochemistry for S-100 protein confirmed the masses to be multiple neurofibromas of the mesentery. We also discussed the clinical features, and treatment approaches of similar cases in literatures.展开更多
文摘Microzoopiankton community composition in the north of South China Sea was investigated during autumn （between September and October）, 2004. Dilution technique using chlorophyll a （Chl a） was employed to estimate grazing rates and grazing pressure. The results showed that Polymenophorea Oligotrichida was the dominant group with 16 species, and there were 4 species in Oligotrichina and 11 species in Tintinnina. The ciliates abundance ranged from 9 to 102 ind/m^3, instantaneous growth rates of phytoplankton （k） varied from 0.03 / d to 2.13 / d. Grazing rates of microzooplankton（g） ranged between 0.01 / d and 1.06 / d. The grazing pressure on initial phytoplankton stock （Pi） and primary production （Pp） was 0.089 % - 65.23 % and 33.63 % - 86.04 %, respectively. The grazing of microzooplankton was mainly limited by ciliates abundance. Results of grazing pressure on primary production indicated that microzooplankton played an improtant role in transmitting primary production in the north of South China Sea.
文摘We presented a case of giant neurofibromas arising from the jejunal mesentery of a 52-year-old man. The patient presented with epigastric fullness, and decrease of food intake, but without stigmata of neurofibromatosis-l. Ultrasonography, computed tomography （CT） and MR imaging revealed two large masses in the abdomen extending to the pelvis. Total resection of the tumors together with corresponding segments of intestines was performed. Histological examination and immunocytochemistry for S-100 protein confirmed the masses to be multiple neurofibromas of the mesentery. We also discussed the clinical features, and treatment approaches of similar cases in literatures.
