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| 1 | Mega-shoaling in carbonate platform of the Middle Triassic Leikoupo Formation,Sichuan Basin, Southwest China显示文摘Shoaling is a common type of sedimentation in the evolution of carbonate platform,and commonly has poor continuity.This paper presents a newly discovered and rare type of shoaling,i.e.,mega-shoaling in nearly basin scale,which is developed in the Middle Triassic Leikoupo Formation of the Sichuan Basin,southwest China.During the Leikoupo time,the studied Sichuan Basin experienced hot and dry climate conditions and developed a carbonate platform within a restricted epicontinental sea.In B sub-layer of the Lei-1-1 sub-member of the Leikoupo Formation a series of grainstones of shoal facies accumulated throughout almost the entire basin,thereby generating features associated with basin-scale mega-shoaling.By detailed core examination and microscopic observation of thin sections,it is shown that the lithology of this set of grainstones is dominated by doloarenite(calcarenite)followed by oolitic dolomite(limestone).In addition,it contains three types of sedimentary sequences characterized by upward-coarsening and upward-shallowing as the followings:restricted lagoon to platform interior beach;restricted lagoon to platform interior beach and to platform flat;and tidal flat to peritidal beach.Subsequently,a multicyclic stratigraphic division and correlation revealed that this set of grainstones can be well traced and compared horizontally,and is generally isochronous.In addition,a template for logging facies,established based on core calibrations and logging data,was employed to analyze the 235 wells in the basin.The results demonstrate the shoal grainstones to be 10–40 m thick with a15×104km2continuous distribution area.These findings indicate that the carbonate platform developed mega-shoals within a short period of time.The genesis of such a mega-shoaling was investigated by focusing on various shoaling conditions,such as paleo-tectonics,paleo-geomorphology,paleo-climate,sea-level changes,and palaeo-hydrodynamics.A specific combination of independent geological factors creates beneficial geomorphologic conditions for the mega-shoaling including a quiescent paleo-tectonic environment,relatively flat paleo-geomorphology and evaporites filling up and leveling off.In addition,a stably settling carbonate platform underwent sea-level fluctuations through swift transgressions and protracted regressions,which is not only conducive to continuous,multicyclic and superimposed vertical development of grain beaches but also beneficial for the horizontal migration,coalescence and superimposition of individual grain beaches.As a consequence,large-scale and continuously-distributed grain beach sedimentation emerges and mega-shoals develop. | TAN XiuCheng LI Ling LIU Hong CAO Jian WU XiaoQing ZHOU SuYan SHI XueWen | 2014 | Science China Earth Sciences2014，57，3： | 12 |
| 2 | Neuroglobin expression in rats after traumatic brain injury显示文摘In this study,we used a rat model of severe closed traumatic brain injury to explore the relationship between neuroglobin,brain injury and neuronal apoptosis.Real-time PCR showed that neuroglobin mRNA expression rapidly increased in the rat cerebral cortex,and peaked at 30 minutes and 48 hours following traumatic brain injury.Immunohistochemical staining demonstrated that neu-roglobin expression increased and remained high 2 hours to 5 days following injury.The rate of in-crease in the apoptosis-related Bax/Bcl-2 ratio greatly decreased between 30 minutes and 1 hour as well as between 48 and 72 hours post injury.Expression of neuroglobin and the anti-apoptotic factor Bcl-2 greatly increased,while that of the proapoptotic factor decreased,in the cerebral cortex post severe closed traumatic brain injury.It suggests that neuroglobin might protect neurons from apoptosis after traumatic injury by regulating Bax/Bcl-2 pathway. | Xin Lin Min Li Aijia Shang Yazhuo HU Xiao Yang Ling Ye Suyan Bian ZhongfengWang Dingbiao Zhou | 2012 | Neural Regeneration Research2012，7，25： | 4 |
| 3 | Effects of organic mulching on soil aggregate stability and aggregate binding agents in an urban forest in Beijing, China显示文摘Urban forest soil is often disturbed by rapid urbanization. Organic mulching is effective for improving soil quality and aggregate stability. This study evaluated how soil binding agents changed aggregate stability through organic mulching in urban forest soils. Three treatments were applied in Jiufeng National Forest Park, Beijing: (1) no organic mulch (control);(2) wood chips alone (5 cm thickness);and, (3) wood chips + wood compost (This mulch was divided into two layers, the upper layer of wood chips (2.5 cm), the lower layer wood compost (2.5 cm)). Soil samples were collected from the surface 10- cm soil layer and fraction into four aggregates. Glomalin-related soil protein and soil organic carbon were measured in bulk soil and the four aggregates. The results show that wood chips + wood compost increased the proportion of large and small macroaggregates, mean weight diameter and geometric mean diameter. The total and easily extractable glomalin-related soil protein were higher in the wood chips + wood compost. However, soil organic carbon was lower in the wood chips alone application compared to the controls and wood chips + wood compost. Easily extractable / total glomalin-related soil protein and glomalin-related soil protein / soil organic carbon ratios of wood chips alone and wood chips + wood compost had increased trend compared to the controls but did not reach significant levels (p > 0.05). Mean weight diameter and geometric mean diameter correlated positively with total and easily extractable glomalin-related soil protein but were not positively correlated with soil organic carbon, the ratios of easily extractable and total glomalin-related soil protein, and the ratios of glomalin-related soil protein and soil organic carbon. Redundancy analysis revealed that total glomalin-related soil protein was the most important driver for soil aggregate stability, especially the total glomalin-related soil protein of small macroaggregates. The results suggest that wood chips + wood compost enhanced soil aggregate stability through the increase of glomalin-related soil protein. Wood chips alone cannot enhance soil aggregate stability in urban forests in the short term. | Wei Zhou Xiangyang Sun Suyan Li Tiantian Du Yi Zheng Zhihui Fan | 2022 | Journal of Forestry Research2022，33，3： | 2 |
| 4 | A Prognostic Model to Predict Recovery of COVID-19 Patients Based on Longitudinal Laboratory Findings显示文摘The temporal change patterns of laboratory data may provide insightful clues into the whole course of COVID-19.This study aimed to evaluate longitudinal change patterns of key laboratory tests in patients with COVID-19,and identify independent prognostic factors by examining the associations between laboratory findings and outcomes of patients.This multicenter study included 56 patients with COVID-19 treated in Jilin Province,China,from January 21,2020 to March 5,2020.The laboratoryfindings,epidemiological characteristics and demographic data were extracted from electronic medical records.The average value of eosinophils and carbon dioxide combining power continued to significantly increase,while the average value of cardiac troponin I and mean platelet volume decreased throughout the course of the disease.The average value of lymphocytes approached the lower limit of the reference interval for the first 5 days and then rose slowly thereafter.The average value of thrombocytocrit peaked on day 7 and slowly declined thereafter.The average value of mean corpuscular volume and serum sodium showed an upward trend from day 8 and day 15,respectively.Age,sex,lactate dehydrogenase,platelet count and globulin level were included in the final model to predict the probability of recovery.The above parameters were verified in 24 patients with COVID-19 in another area of Jilin Province.The risk stratification and management of patients with COVID-19 could be improved according to the temporal trajectories of laboratory tests. | Suyan Tian Xuetong Zhu Xuejuan Sun Jinmei Wang Qi Zhou Chi Wang Li Chen Shanji Li Jiancheng Xu | 2020 | Virologica Sinica2020，35，6： | 1 |
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