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Sedimentary Microfacies and Porosity Modeling of Deep-Water Sandy Debris Flows by Combining Sedimentary Patterns with Seismic Data： An Example from Unit I of Gas Field A, South China Sea

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 182-194页

作者： li shengli YU Xinghe JIN Jianli The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism Ministry of EducationChinaSchool of Energy ResourcesChina University of Geosciences(Beijing)Beijing 100083China

Sandy debris flow deposits are present in Unit I during Miocene of Gas Field A in the Baiyun Depression of the South China Sea. The paucity of well data and the great variability of the sedimentary microfacies make it difficult to identify and predict the distribution patterns of the main gas reservoir, and have seriously hindered further exploration and development of the gas field. Therefore, making full use of the available seismic data is extremely important for predicting the spatial distribution of sedimentary microfacies when constructing three-dimensional reservoir models. A suitable reservoir modeling strategy or workflow controlled by sedimentary microfacies and seismic data has been developed. Five types of seismic attributes were selected to correlate with the sand percentage, and the root mean square （RMS） amplitude performed the best. The relation between the RMS amplitude and the sand percentage was used to construct a reservoir sand distribution map. Three types of main sedimentary microfacies were identified： debris channels, fan lobes, and natural levees. Using constraints from the sedimentary microfacies boundaries, a sedimentary microfacies model was constructed using the sequential indicator and assigned value simulation methods. Finally, reservoir models of physical properties for sandy debris flow deposits controlled by sedimentary microfacies and seismic inversion data were established. Property cutoff values were adopted because the sedimentary microfacies and the reservoir properties from well-logging interpretation are intrinsically different. Selection of appropriate reservoir property cutoffs is a key step in reservoir modeling when using simulation methods based on sedimentary microfacies control. When the abnormal data are truncated and the reservoir properties probability distribution fits a normal distribution, microfacies-controlled reservoir property models are more reliable than those obtained from the sequence Gauss simulation me

关键词： sandy debris flow deposit seismic attribute and inversion geological modeling controlled by micro-facies data truncated process

Importance of Modeling Heterogeneities and Correlation in Reservoir Properties in Unconventional Formations: Examples of Tight Gas Reservoirs

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Journal of Earth Science 2021年第4期32卷 809-817页

作者： shengli li Y.Zee Ma Ernest Gomez School of Energy Resources China University of GeoscienceBeijing 100083China Information Solution SchlumbergerDenver CO 80202USA

We present lithofacies classifications for a tight gas sandstone reservoir by analyzing hierarchies of *** use principal component analysis(PCA)to overcome the two level of heterogeneities,which results in a better lithofacies classification than the traditional cutoff *** classical volumetric method is used for estimating oil/gas in-place resources in the petroleum industry since its inception is not accurate because it ignores the heterogeneities of and correlation between the petrophysical *** present the importance and methods of accounting for the heterogeneities of and correlation between petrophysical properties for more accurate hydrocarbon volumetric *** also demonstrate the impacts of modeling the heterogeneities and correlation in porosity and hydrocarbon saturation for hydrocarbon volumetric estimations with a tight sandstone gas ***,geoscientists have traditionally considered that small-scale heterogeneities only impact subsurface fluid flow,but not impact the hydrocarbon resource volumetric *** show the importance of modeling small-scale heterogeneities using fine cell size in reservoir modeling of unconventional resources for accurate resource assessment.

关键词： heterogeneity petrophysical property correlations Simpson’s paradox porosity gas saturation hydrocarbon volumetrics change of support problem

Rapidly Solidifed Steel Droplets with B and P Addition

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Journal of Materials Science & Technology 2013年第10期29卷 995-998页

作者： Na li Junwei Zhang Qian Xu Lulu Zhai shengli li Jiguang li School of Material and Metallurgy University of Science and Technology Liaoning Tianjin Iron and Steel Group Co. Ltd

Low carbon steels with B and P additions were remelted by electromagnetic levitation and solidified in a vacuum drop tube. The droplet volumes were set to be 2 mm × 2 mm ×2 mm （TM） and 5 mm ×5 mm× 5 mm （FM）, respectively. The microstructure of rapidly solidified steel droplets （cooled in silicon oil） with P and both B and P addition was observed. The microstructures of B-bearing droplet samples were more uniform than those of B-free ones, for both TM and FM samples. The distribution of C and P along the diameter of each sample was detected. The well-distribution of C and P was detected in B-bearing droplet samples. So it could be deduced that B was also well distributed in the steels. It was B atoms that promoted the well-distribution of C and P, which further improved the uniformity of microstructure under the condition of rapid solidification. The micro-hardness of B- bearing samples was higher than that of B-free samples, and the hardening mechanism was discussed in detail.

关键词： Rapid solidification Boron Phosphorus Droplet Micro-hardness

Simultaneous quantification of hepatic MRI-PDFF and R2* in a rabbit model with nonalcoholic fatty liver disease

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Science China(life Sciences) 2018年第9期61卷 1107-1114页

作者： Xiaomin Wang Xiaojing Zhang lin Ma shengli li Department of Radiology Chinese PLA General Hospital School of Medical Imaging Tianjin Medical University Laboratory Animal Center Capital Medical University

Quantification of hepatic fat and iron content is important for early detection and monitoring of nonalcoholic fatty liver disease(NAFLD) patients. This study evaluated quantification efficiency of hepatic proton density fat fraction(PDFF) by MRI using NAFLD rabbits. R2* was also measured to investigate whether it correlates with fat levels in NAFLD. NAFLD rabbit model was successfully established by high fat and cholesterol diet. Rabbits underwent MRI examination for fat and iron analyses,compared with liver histological findings. MR examinations were performed on a 3.0 T MR system using multi-echo 3 D gradient recalled echo(GRE) sequence. MRI-PDFF showed significant differences between different steatosis grades with medians of3.72%(normal), 5.43%(mild), 9.11%(moderate) and 11.17%(severe), whereas this was not observed in R2*. Close correlation between MRI-PDFF and histological steatosis was observed(r=0.78, P=0.000). Hepatic iron deposit was not found in any rabbits. There was no correlation between R2* and either liver MRI-PDFF or histological steatosis. MR measuring MRI-PDFF and R2* simultaneously provides promising quantification of steatosis and iron. Rabbit NAFLD model confirmed accuracy of MRI-PDFF for liver fat quantification. R2* measurement and relationship between fat and iron of NAFLD liver need further experimental investigation.

关键词： nonalcoholic fatty liver disease quantification magnetic resonance imaging proton density fat fraction R2*

Rhinoplasty in China: A review of the most important events in its history of development

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Chinese Journal of Plastic and Reconstructive Surgery 2022年第4期4卷 149-153页

作者： shengli li Qingfeng li Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China

A review of the literature in commonly used retrieval systems generally yields minimal or no pertinent information on the early works of Chinese ***,the early works in rhinoplasty by pioneers *** Hu(胡懋廉)and *** Nyi(倪葆春)were retrieved from the database of Chinese Medical Journal published before1949 that overseas doctors could not gain access to online possibly due to the language barrier in collecting and processing those old professional data by main retrieval *** published original articles on costal cartilage applications for correction of saddle noses in as early as 1939 and 1949,respectively,which represent the earliest attempts of treating nasal deformities with costal cartilages in China as well as in *** private cosmetic surgical practices in rhinoplasty from the 1930s to the 1940s were recovered and briefly reviewed,and some of the most important clinical cases were *** important events related to rhinoplasty,such as the establishment of the first national society of rhinoplasty in Chengdu,China in 2011 and the successful performance of the first national congress on rhinoplasty in Shanghai,China in 2012,were included.

关键词： Rhinoplasty History Costal cartilage Society Congress

Growth kinetics of hydrate formation from water–hydrocarbon system

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Chinese Journal of Chemical Engineering 2019年第9期27卷 2164-2179页

作者： Youhong Sun Shuhui Jiang shengli li Guobiao Zhang Wei Guo Key Laboratory of Drilling and Exploitation Technology in Complex Conditions of Natural Resources College of Construction Engineering Jilin University

Gas hydrates have drawn global attentions in the past decades as potential energy *** should be noted that there are a variety of possible applications of hydrate-based technologies,including natural gas storage,gas transportation,separation of gas mixture,and seawater *** applications have been critically challenged by insufficient understanding of hydrate formation *** this work,the literatures on growth kinetic behaviors of hydrate formation from water-hydrocarbon were systematically *** hydrate crystal growth,hydrate film growth and macroscopic hydrate formation in water system were reviewed,***,the hydrate crystal growth was analyzed with respect to different positions,such as gas/liquid interface,liquid–liquid interface and gas–liquid–liquid ***,experimental and modeling studies on the growth of hydrate film at the interfaces between guest phase and water phase were categorized into two groups of lateral growth and thickening growth considering the differences in growth ***,we summarized the promoters and inhibitors reported(biological or chemical,liquid or solid and hydrophobic or hydrophilic)and analyzed the mechanisms affecting hydrate formation in bulk water *** gaps and suggestions for further studies on hydrate formation kinetic behaviors are presented.

关键词： Gas hydrate Formation Crystal Film Promotion Inhibition

Microstructural Evolution and Oxidation Resistance of Multi-walled Carbon Nanotubes in the Presence of Silicon Powder at High Temperatures

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Journal of Materials Science & Technology 2012年第7期28卷 599-605页

作者： Ming LUO Yawei li shengli Jin Shaobai Sang Lei Zhao The Key State Laboratory Breeding Base of Refractories and Ceramics Wuhan University of Science and TechnologyWuhan 430081 China

The microstructural evolution and oxidation resistance of multi-walled carbon nanotubes （MWCNTs） by di- rectly heating silicon powder and MWCNTs in a coke bed from 1000 to 1500 ~C are investigated with the aid of X-ray diffraction （XRD）, scanning electron microscopy （SEM）, high resolution transmission electron microscopy （HRTEM） and thermogravimetry-differential scanning calorimetry （TG-DSC）. The results showed that the morphology and microstructure of MWCNTs did not change much after being treated from 1000 ~C to 1200 ~C. An obvious SiC coating was formed on the surface of MWCNTs from 1300 to 1400 ~C. Up to 1500 ~C, nearly all the MWCNTs transformed into SiC nanowires. The oxidation resistance of the treated MWCNTs was improved compared with as-received ones. Non-isothermal kinetics showed that the oxidation activation energy of the treated MWCNTs reached 208 kJ/mol, much higher than 264 k J/tool of as-received ones.

关键词： Multi-walled carbon nanotubes (MWCNTs) Coating SiC nanowires Oxidation resistance Oxidation activation energy

Early serious adverse event in immediate postoperative period in children underwent cardiac surgery

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中国循环杂志 2018年第S1期33卷 152-153页

作者： shengli li A-RWICK Butt National Center for Cardiovascular Diseases Fuwai HospitalChinese Academy of Medical SciencesPeking Union Medical CollegeBeijingChina Royal Children's Hospital MelbourneAustralia

Objective Despite dramatic advances in surgical technique and perioperative care,some children still suffered serious adverse event in early postoperative period which were associated with increased morbidity and *** was little information regarding the impact of adverse events on the postoperative recovery,especially the serious adverse events occurring immediately after *** sought to evaluate the early postoperative serious adverse events and examine the impact of them on postoperative recovery.

关键词： Early serious adverse event children underwent cardiac surgery

N-carbamylglutamate restores nitric oxide synthesis and attenuates high altitudeinduced pulmonary hypertension in Holstein heifers ascended to high altitude

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Journal of Animal Science and Biotechnology 2018年第4期9卷 1000-1007页

作者： Shuxiang Wang Arash Azarfar Yajing Wang Zhijun Cao shengli li State Key Laboratory of Animal Nutrition Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control College of Animal Science and Technology China Agricultural University Faculty of Agriculture Department of Animal Science Lorestan University

Background: High-altitude pulmonary hypertension(HAPH) is a life-threating condition for animals in high altitude,and disturbance of endothelial nitric oxide(NO) synthesis contributes to its pathogenesis. N-carbamylglutamate(NCG), which enhances arginine synthesis, promotes endogenous synthesis of NO. In this study, we determined the effects of NCG on alleviating HAPH in Holstein heifers that ascended to Tibet(Lhasa, 3,658 m).Methods: Exp. 1, 2,000 Holstein heifers were transported from low elevation(1,027 m) to Lhasa. After being exposed to hypoxia for 1 yr, Holstein heifers were assigned to a healthy group(Control, n = 6) with mean pulmonary hypertension(mPAP) 49 *** tissues were collected to evaluate histopathological changes and the expression of endothelial nitric oxide synthase(eNOS). Exp. 2, ten healthy heifers and 10 HAPH affected heifers were supplemented with NCG(20 g/d per heifer) for 4 wk. Physiological parameters were determined and blood samples were collected on d-1 and d 28 of the feeding ***: Expression of e NOS in small pulmonary arteriole intima was higher in the healthy than HAPH group(P = 0.006), whereas HAPH group had significantly thicker media and adventitia than healthy group(all P lin-1 protein levels were higher in HAPH group than in the healthy group(P = 0.025). NCG supplementation decreased mPAP and ammonia(both P = 0.001), whereas it increased the expression of eNOS, arginine, and plasma NO(all P < 0.05).Conclusions: The expression of eNOS was decreased in Holstein heifers with HAPH. NCG supplementation decreased m PAP through the restoration of eNOS and endogenous NO synthesis.

关键词： High-altitude pulmonary hypertension Holstein heifers N-carbamylglutamate Tibet