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| 1 | Chemical composition of PM_(2.5) during winter in Tianjin,China显示文摘PM2.5 samples for 24 h were collected during winter in Tianjin,China. The ambient mass concentration and chemical composition of the PM2.5 were determined. Ionic species were analyzed by ion chromatog-raphy,while carbonaceous species were determined with the IMPROVE thermal optical reectance(TOR) method,and inorganic elements were measured by inductively coupled plasma-atomic emission spec-trometer. The daily PM2.5 mass concentrations ranged from 48.2 to 319.2 g/m3 with an arithmetic average of 144.6 g/m3. The elevated PM2.5 in winter was mostly attributed to combustion sources such as vehicle exhaust,heating,cooking and industrial emissions,low wind speeds and high relative humidity(RH) ,which were favorable for pollutant accumulation and formation of secondary pollutants. By chem-ical mass balance,it was estimated that about 89.1% of the PM2.5 mass concentrations were explained by carbonaceous species,secondary particles,crustal matters,sea salt and trace elements. Organic material was the largest contributor,accounting for about 32.7% of the total PM2.5 mass concentrations. SO42-,NO3-,Cl- and NH4+ were four major ions,accounting for 16.6%,11.5%,4.7% and 6.0%,respectively,of the total mass of PM2.5. | Jinxia Gu Zhipeng Bai Weifang Li Liping Wu Aixia Liu Haiyan Dong Yiyang Xie | 2011 | Particuology2011，9，3： | 60 |
| 2 | Effects of light quality on CO2 assimilation,chlorophyll-fluorescence quenching,expression of Calvin cyclegenes and carbohydrate accumulation in Cucumis sativus显示文摘 | Wang Hong Gu Min Cui Jinxia | 2009 | J Photochem Photobiol B:Biol2009，96，： | 1 |
| 3 | Duplication and adap- tive evolution of the chalcone synthase genes of Dendranthema (Asteraceae) 显示文摘 | Yang Ji Huang Jinxia Gu Hongya | 2002 | Mol Biol Evol2002，19，： | 1 |
| 4 | Effects of light quality on CO 2 assimilation, chlorophyll-fluorescence quenching, expression of Calvin cycle genes and carbohydrate accumulation in Cucumis sativus显示文摘 | Hong Wang Min Gu Jinxia Cui Kai Shi Yanhong Zhou Jingquan Yu | 2009 | Journal of Photochemistry & Photobiology B: Biology2009，，1： | 1 |
| 5 | Structure and Function of the Gastrointestinal Tract of the Green Turtle(Chelonia mydas) Hatchling显示文摘The gastrointestinal tracts of four Chelonia mydas hatchlings were examined at the anatomical, histological and ultrastructural level. Our results show that the gastrointestinal tract(GI) is composed by esophagus, stomach, small intestine(SI) and large intestine(LI), and histologically of mucosa, submucosa, muscularis externa(ME) and serosa. The esophagus is marked by conical papillae lined by keratinized stratified squamous epithelium, whereas the remaining GI by simple columnar epithelium; esophageal diverticulum is absent. The stomach covered with mucous granule cells, contains cardia, fundic regions and pylorus, which are separately characterized by cardiac glands, fundic glands and pyloric glands, and have the thickest submucosa and ME of the GI. The ME of the esophagus mainly consist of one layer of circular smooth muscle whereas the rest of GI of two layers, inner circular muscle and outer longitudinal muscle. The SI is slightly longer than the LI and the GI is approximately 5.11 times of the carapace length. The SI is lined with longitudinal zigzag folds and characterized by absorptive cells with longer and denser microvilli, whereas the LI by transversal folds, goblet cells and lymphoid nodules. Only intestinal glands appear in duodenum. Endocrine cells are observed in all sections of the GI and accounted for the largest proportion in duodenum. The results demonstrate a perfect combination of the structure and function of the GI and reveal that the digestion and absorption primarily occurs in the foregut. C. mydas hatchling may prefer carnivorous diet. | Hualing CHEN Mingbin YE Yuyan LU Jinxia DUAN Pipeng LI Hexiang GU | 2015 | Asian Herpetological Research2015，6，4： | 1 |
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