|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An 8.1Ma calcite record of Asian summer monsoon evolution on the Chinese central Loess Plateau显示文摘Carbonates in loess-red clay sequences consist mainly of calcite and dolomite. The EDTA analysis of carbonates in different size fractions and magnetic susceptibility reveal that calcite is a sensitive index of summer monsoon. The chemical analysis of carbonates and calcite from an 8.1 Ma loess-red clay sequence at Chaona on the Chinese central Loess Plateau shows that the evolution of the Asian summer monsoon experienced four stages, namely 8.1―5.5 Ma, 5.5―2.8 Ma, 2.8―1.5 Ma and 1.5―0 Ma, with increasing intensification and fluctuation, suggesting a possible combining impacts of uplift of the Tibetan Plateau and global changes on the Asian summer monsoon. | CHEN XiuLing FANG XiaoMin AN ZhiSheng HAN WenXia WANG Xin BAI Yan HONG Ye | 2007 | Science China Earth Sciences2007，50，3： | 16 |
| 2 | Speciation of organic phosphorus in a sediment profile of Lake Taihu I:Chemical forms and their transformation显示文摘Organic phosphorus(nonreactive P,NRP)is a major component of P in sediments,but information about its chemical forms and dynamic transformation is limited.The chemical forms and dynamic behaviors of NRP in a sediment profile from Lake Taihu,a freshwater and eutrophic lake in China,were investigated.Five forms of NRP in the sediments were extracted based on a chemical fractionation technique,including easily labile NRP(NaHCO3-NRP),reactive metal oxide-bound NRP(HCl-NRP),humic acid-associated NRP(NaOH-NRPHA),fulvic acid-associated NRP(NaOH-NRPFA)and residual NRP(Res-TP).There were notable transformations with increasing sediment depth from the labile NaHCO3-NRP and NaOH-NRP pools to the recalcitrant HCl-NRP and Res-TP pools,which caused the NRP to become increasingly recalcitrant as the early diagenetic processes proceeded.Further analyses showed that the relative changes in contents of organic matter and reactive Fe oxides in the sediment profile triggered a competition for binding NRP fractions and led to the transformation of NRP.The results highlighted the importance of abiotic processes in regulating the diagenesis of organic P and its stability in sediments. | Di Xu Shiming Ding Bin Li Xiuling Bai Chengxin Fan Chaosheng Zhang | 2013 | Journal of Environmental Sciences2013，25，4： | 7 |
| 3 | Branched alkanes with quaternary carbon atoms in Chinese soils: Potential environmental implications显示文摘Lipids extracted from 26 modern soils collected from different climate zones in China and Mongolia are analyzed using gas chromatography- mass spectrometry. These extracts contain pseudo- homologous families of 5,5-diethylalkanes (5,5- DEAs), 6,6-diethylalkanes, 5-butyl-5-ethylalkanes and 6-butyl-6-ethylalkanes, which are first detected in modern soils. All these pseudohomologous series display exclusively odd or exclusively even carbon numbers, clearly indicating a biosynthetic origin, and their carbon number distributions generally covary. The distributions of 5,5-DEAs exhibit strong regional variations, correlated with the spatial distributions of climate and vegetation. The lower molecular weight 5,5-DEAs, maximizing at C21 or C23, dominate in southeast and southwest China samples, while the higher molecular weight 5,5-DEAs with a mode at C29 dominate in cold, arid northwest China and Mongolia. The results demonstrate that the distribution of 5,5-DEAs can serve as a new independent proxy, indicating variations in soil ecosystems and climates, just like the well-known proxy of n-C15—21/n-C22—33 ratios. | BAI Yan FANG Xiaomin WANG Yongli Fabien Kenig CHEN Xiuling WANG Youxiao | 2006 | Chinese Science Bulletin2006，51，9： | 6 |
| 4 | A widely adaptable approach to generate integration-free iPSCs from non-invasively acquired human somatic cells显示文摘 | Zhichao Ding Lina Sui Ruotong Ren Yanjun Liu Xiuling Xu Lina Fu Ruijun Bai Tingting Yuan Ying Hao Weiqi Zhang Huize Pan Wensu Liu Han Yu Concepcion Rodriguez Esteban Xiaobing Yu Ze Yang Jian Li Xiaomin Wang Juan Carlos Izpisua Belmonte Guang-Hui Liu Fei Yi Jing Qu | 2015 | Protein & Cell2015，6，5： | 5 |
| 5 | Speciation of organic phosphorus in a sediment profile of Lake Taihu Ⅱ.Molecular species and their depth attenuation显示文摘The understanding of organic phosphorus(P) dynamics in sediments requires information on their species at the molecular level,but such information in sediment profiles is scarce.A sediment profile was selected from a large eutrophic lake,Lake Taihu(China),and organic P species in the sediments were detected using solution phosphorus-31 nuclear magnetic resonance spectroscopy(31 P NMR) following extraction of the sediments with a mixture of 0.25 mol/L NaOH and 50 mmol/L EDTA(NaOH-EDTA) solution.The results showed that P in the NaOH-EDTA extracts was mainly composed of orthophosphate,orthophosphate monoesters,phospholipids,DNA,and pyrophosphate.Concentrations of the major organic P compound groups and pyrophosphate showed a decreasing trend with the increase of depth.Their half-life times varied from 3 to 27 years,following the order of orthophosphate monoesters > phospholipids DNA > pyrophosphate.Principal component analysis revealed that the detected organic P species had binding phases similar to those of humic acid-associated organic P(NaOH-NRP HA),a labile organic P pool that tends to transform to recalcitrant organic P pools as the early diagenetic processes proceed.This demonstrated that the depth attenuation of the organic P species could be partly attributed to their increasing immobilization by the sediment solids,while their degradation rates should be significantly lower than what were suggested in previous studies. | Shiming Ding Di Xu Xiuling Bai Shuchun Yao Chengxin Fan Chaosheng Zhang | 2013 | Journal of Environmental Sciences2013，25，5： | 3 |
| 6 | Caution Needed in Pretreatment of Sediments for Refining Phosphorus-31 Nuclear Magnetic Resonance Analysis: Results from a Comprehensive Assessment of Pretreatment with Ethylenediaminetetraacetic Acid显示文摘 | Ding ShiMing Bai Xiuling Fan Chengxin Zhang Lu | 2010 | EN2010，，5： | 1 |
| 7 | Development and validation of a machine learning-based nomogram for prediction of intrahepatic cholangiocarcinoma in patients with intrahepatic lithiasis显示文摘Background:Accurate diagnosis of intrahepatic cholangiocarcinoma(ICC)caused by intrahepatic lithiasis(IHL)is crucial for timely and effective surgical intervention.The aim of the present study was to develop a nomogram to identify ICC associated with IHL(IHL-ICC).Methods:The study included 2,269 patients with IHL,who received pathological diagnosis after hepatectomy or diagnostic biopsy.Machine learning algorithms including Lasso regression and random forest were used to identify important features out of the available features.Univariate and multivariate logistic regression analyses were used to reconfirm the features and develop the nomogram.The nomogram was externally validated in two independent cohorts.Results:The seven potential predictors were revealed for IHL-ICC,including age,abdominal pain,vomiting,comprehensive radiological diagnosis,alkaline phosphatase(ALK),carcinoembryonic antigen(CEA),and cancer antigen(CA)19-9.The optimal cutoff value was 2.05μg/L for serum CEA and 133.65 U/mL for serum CA 19-9.The accuracy of the nomogram in predicting ICC was 82.6%.The area under the curve(AUC)of nomogram in training cohort was 0.867.The AUC for the validation set was 0.881 from The Second Affiliated Hospital of Wenzhou Medical University,and 0.938 from The First Affiliated Hospital of Fujian Medical University.Conclusions:The nomogram holds promise as a novel and accurate tool to predict IHL-ICC,which can identify lesions in IHL in time for hepatectomy or avoid unnecessary surgical resection. | Xian Shen Huanhu Zhao Xing Jin Junyu Chen Zhengping Yu Kuvaneshan Ramen Xiangwu Zheng Xiuling Wu Yunfeng Shan Jianling Bai Qiyu Zhang Qiqiang Zeng | 2021 | Hepatobiliary Surgery and Nutrition2021，10，6： | 1 |
| 8 | Variations of sediment organic phosphorus and organic carbon during the outbreak and decline of algal blooms in Lake Taihu,China显示文摘In this study,sediment organic phosphorus(OP)and organic carbon(OC)in Lake Taihu,China,as well as their relationships,were analyzed during the outbreak and decline of algal blooms(ABs)over a five-month field study.The results showed synchronous temporal changes in the sediment OP and OC contents with the development of ABs.In addition,there was a significant positive correlation between the sediment OP and OC(p<0.01),suggesting simultaneous deposition and consumption during the ABs outbreak.The sediment OP and OC contents decreased significantly at the early and last stages of the ABs outbreak and increased at the peak of the ABs outbreak and during the ABs decline.These temporal variation patterns suggest that the sediment OC and OP contents did not consistently increase during the ABs outbreak,even though algae are an important source of organic matter in sediments.The depletion or enrichment of OC and OP in sediments may also depend on the scale of the ABs outbreak.The obtained results revealed significant differences in the sediment OC and OP contents between the months(p<0.05).In addition,OP in the sediments was dominated by orthophosphate diester(phospholipids and DNA-P)and orthophosphate monoester during the ABs outbreak and decline,respectively.The active OC contents and proportions in the sediments in the ABs outbreak were significantly lower than those observed in the ABs decline period,demonstrating the significant impacts of the ABs outbreak and decline on the sediment OC and OP in Lake Taihu. | Jiehua Wang Xiuling Bai Wenchao Li Pingping Zhang Mengdi Zhang Haoran Wang Yingge Bai | 2024 | Journal of Environmental Sciences2024，，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员