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Using a Modified GOI Index(Effective Grid Containing Oil Inclusions)to Indicate Oil Zones in Carbonate Reservoirs

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Acta Geologica Sinica(English Edition) 2015年第3期89卷 902-910页

作者： ZHANG Nai PAN Wenlong TIAN long yu Xiaoqing JIANG Jing JIN xu Research Institute of Petroleum Exploration and Development PetroChina School of Earth Science and Resources China University of Geosciences Department of Earth and Environmental Sciences University of Waterloo School of Energy Resources China University of Geosciences

The GOI（grains containing oil inclusions） index is used to distinguish oil zones,oil-water zones and water zones in sandstone oil ***,this method cannot be directly applied to carbonate rocks that may not have clear granular *** this paper we propose the Effective Grid Containing Oil Inclusions（EGOI） method for carbonate reservoirs.A microscopic view under10× ocular and 10 x objective is divided into 10×10 grids,each with an area of 0.0625 mm×0.0625 *** effective grid is defined as one that is cut（touched） by a stylolite,a healed fracture,a vein,or a pore-filling *** is defined as the number of effective grids containing oil inclusions divided by the total number of effective grids multiplied by 100%.Based on data from the Tarim Basin,the EGOI values indicative of the paleo-oil zones,oil-water zones,and water zones are 〉5%,1%-5%,and 〈1%,***,the oil zones in young reservoirs（charged in the Himalayan） generally have lower EGOI values,typically 3%-5%.

关键词： GOI EGOI ancient oil reservoirs late accumulation carbonate reservoirs

Unusual cause of lesions in the descending duodenum and liver:A case report and review of literature

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World Journal of Clinical Cases 2018年第11期6卷 472-476页

作者： Zhuang-long Xiao Ke-Shu xu yu-Hu Song Division of Gastroenterology Union HospitalTongji Medical CollegeHuazhong University of Science and Technology

The descending duodenum is rarely involved in Schistosoma japonicum(S. japonicum) infection. Here, we report a case of acute Schistosoma infection, which presented with abdominal pain, abdominal distension and irregular fever. Tumor-like lesions were observed in the descending duodenum. Simultaneously, heterogeneity in hepatic perfusion was demonstrated by dynamic computed tomography scanning. Biopsy of the descending duodenum showed the deposition of Schistosoma eggs. Following administration of the antihelminthic drug praziquantel, the patient showed rapid clinical improvement. In conclusion, we report a patient with acute S. japonicum infection presenting as tumor-like lesions in the descending duodenum and heterogeneity of blood perfusion in liver parenchyma.

关键词： Schistosoma japonicum Heterogeneity Duodenum Tumor-like lesions Liver

Effect of Mg addition on formation of intragranular acicular ferrite in heat-affected zone of steel plate after high-heat-input welding

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Journal of Iron and Steel Research International 2018年第4期25卷 433-441页

作者： long-yun xu Jian Yang Rui-zhi Wang Wan-lin Wang yu-nan Wang School of Metallurgy and Environment Central South University Changsha 410083 Hunan China State Key Laboratory of Advanced Special Steel Shanghai University Shanghai 200072 China Steelmaking Research Department Research Institute Baoshan Iron and Steel Co. Ltd. Shanghai 201999 China

The effects of Mg content, inclusion size, and austenite grain size on the intragranular acicular ferrite （IAF） nucleation in heat-affected zone of steel plate after high-heat-input welding of 400 kJ/cm were investigated by welding simulation and observation using a scanning electron microscope equipped with an energy dispersive spectrometer and an optical microscope. The IAFs are observed in steel with Mg addition, and the volume fraction of IAF is as high as 55.4% in the steel containing 0.0027 mass% Mg. The MgO-Al2O3-Ti2O3-MnS inclusions with size around 2 μm are effective nucleation sites for IAF, whereas Al2O3-MnS inclusions are impotent to nucleate the acicular ferrite. The prior-austenite grain （PAG） size distribution in low Mg steel is similar to that in steel without Mg addition. The austenite grain with size about 200 μm is favorable for the IAF formation. In the steel with high Mg content of 0.0099%, the growth of PAG is greatly inhibited, and PAG sizes are smaller than 100 μm. Therefore, the nucleation of IAF can hardly be observed.

关键词： Heat-affected zone Inclusion Intragranular acicular ferrite Magnesium deoxidation High-heat-inputwelding Steel plate

Design and FPGA verification of a novel reliable real-time data transfer system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第10期9卷 1406-1410页

作者： yu-ping LIAN Yan HAN Ming-xu HUO Jin-long CHEN Yan ZHANG Institute of Microelectronics and Photoelectronics Zhejiang University Hangzhou 310027 China

Considering the increasing use of information technology with established standards, such as TCP/IP and XML in modem industrial automation, we present a high cost performance solution with FPGA （field programmable gate array） implementation of a novel reliable real-time data transfer system based on EPA （Ethemet for plant automation） protocol and IEEE 1588 standard. This combination can provide more predictable and real-time communication between automation equipments and precise synchronization between devices. The designed EPA system has been verified on Xilinx Spartan3 XC3S1500 and it consumed 75% of the total slices. The experimental results show that the novel industrial control system achieves high synchronization precision and provides a 1.59-ps standard deviation between the master device and the slave ones. Such a real-time data transfer system is an excellent candidate for automation equipments which require precise synchronization based on Ethemet at a comparatively low price.

关键词： Ethemet for plant automation (EPA) IEEE 1588 Precise synchronization Real-time data transfer

Fe-Si-Al高级氧化催化剂非均相Fenton处理造纸废水

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陕西科技大学学报 2025年第1期43卷 8-14,45页

作者：刘育星罗清张安龙段超宗晓宁井天昊刘雨恺王旭陕西科技大学轻工科学与工程学院轻化工程国家级实验教学示范中心陕西西安710021 陕西科技大学环境科学与工程学院陕西西安710021

造纸废水中的污染物种类繁多,COD_(Cr)排放量较大.目前,常规均相Fenton工艺在造纸废水深度处理中得到了广泛应用,然而该工艺存在硫酸亚铁用量较高和污泥产量较大的问题.本文将常规Fenton污泥为主要原料制取的Fe-Si-Al高级氧化催化剂应... 详细信息

造纸废水中的污染物种类繁多,COD_(Cr)排放量较大.目前,常规均相Fenton工艺在造纸废水深度处理中得到了广泛应用,然而该工艺存在硫酸亚铁用量较高和污泥产量较大的问题.本文将常规Fenton污泥为主要原料制取的Fe-Si-Al高级氧化催化剂应用于非均相Fenton处理造纸废水,以COD_(Cr)的去除率和污泥产量作为评价指标,并利用SEM、XRD、FT-IR等现代仪器手段,研究其应用工艺及反应机理.结果表明,当反应体系初始pH值为3、催化剂投加量10 g/L、m(COD_(Cr))∶m(H_(2)O_(2))=1∶1、反应时间90 min时,COD_(Cr)的去除率可达73.6%,污泥产量较常规Fenton降低了91.8%.催化剂中的铁铝尖晶石(FeAl_(2)O_(4))和铁橄榄石(Fe_(2)SiO_(4))为体系提供Fe^(2+).催化剂经过10次循环利用,COD_(Cr)去除率仍保持在70%左右,表明其具有良好的循环利用性能.非均相Fenton降解有机物的种类较均相Fenton更多,可破坏苯环结构.

关键词： Fenton污泥造纸废水非均相Fenton Fe-Si-Al高级氧化催化剂

xu Tian, Xiaohua yuThe Demand for Nutrients in China

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2013年第2期8卷 186-206页

作者： xu Tian Xiaohua yu Department of Agricultural Economics and Rural Development and Courant Research Centre "Poverty Equity and Growth in Developing Countries" University of GOttingen 37073 G6ttingen Germany Courant Research Centre "Poverty Equity and Growth in Developing Countries" Universityof Goettingen 37073 Goettingen Germany

China is experiencing a nutritional transition accompanied by its rapid economic growth. However, the relationship between income growth and nutritional improvement is still unclear. In contrast with the biased indirect method, this paper employs a direct method to estimate the income elasticities of 22 nutrients using household survey data to fill the gap in the current literature. Our results indicate that the income elasticities of most nutrients are smaller than that which is stated in the current literature using the indirect method, and vary for different income groups.

关键词： nutrients income elasticity nutritional improvement China

Future changes of cluster high temperature events over China from RegCM4 ensemble under RCP4.5 scenario

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Advances in Climate Change Research 2020年第4期11卷 349-359页

作者： ZHOU Bo-Tao CHENG Yang HAN Zhen-yu xu Ying WANG Xiao-long Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjing210044China School of Atmospheric Sciences Chengdu University of Information TechnologyChengdu610225China National Climate Center China Meteorological AdministrationBeijing100081China Zhengzhou Meteorological Service Zhengzhou450000China

Using the daily maximum temperature of the RegCM4 dynamical downscaling from four global climate models under the historical and RCP4.5 simulations,this study firstly identified the cluster high temperature event(CHTE)occurring in China through a simplified objective method,and then projected its change during the 21st century in terms of the CHTE metrics including frequency,duration,extreme intensity,cumulative intensity,maximum influential area,average influential area,and comprehensive *** ensemble projection indicates that all the CHTE metrics tend to increase toward the end of the 21st century on the national ***,the occurrence of CHTE shows a longer month span during the middle and the end of the 21st century(from April to October)compared to the present(from April to September),accompanied with the peaks of the frequency,duration,and cumulative intensity shifting from the present July ahead to *** to 1986-2005,the projected slight,moderate,and extreme CHTEs increase by 55%,50%,and 50%(58%,43%,and 60%)during 2046-2065(2080-2099),respectively;the projected severe CHTE increases by 11%during 2046-2065 while decreases by 11% during ***,the CHTE frequency,duration,and cumulative intensity are projected to increase in a widespread *** largest increase appears in southern China for the frequency and in Xinjiang and Southeast China for the duration and cumulative *** further divided China into five sub-regions to examine the regional features of CHTE *** is found that in addition to the increase of CHTEs in each single subregion,a pronounced enhancement is also projected for the occurrence of cross-regional CHTEs,particularly for that across more than two subregions.

关键词： Cluster high temperature event Regional climate model Dynamical downscaling Ensemble projection

Active Depths of Main Faults in the Ying-Qiong Basin Investigated by Multi-Scale Wavelet Decomposition of Bouguer Gravity Anomalies and Power Spectral Methods

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Journal of Ocean University of China 2022年第5期21卷 1174-1188页

作者： AN long yu Chong GONG Wei LI Deyong XING Junhui xu Chong ZHANG Hao Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Zhengyuan Digital City Construction Co. Ltd.Yantai 264670China

The Ying-Qiong Basin is located on the northwestern margin of the South China Sea and at the junction of the South China Block and the Indochina *** is characterized by complex geological *** existing seismic data in the study area is sparse due to the lack of earthquake *** of the limited source energy and poor coverage of seismic data,the knowledge of deep structures in the area,including the spatial distribution of deep faults,is ***,satellite gravity data cover the entire study area and can reveal the spatial distribution of *** on the wavelet multi-scale decomposition method,the Bouguer gravity field in the Ying-Qiong Basin was decomposed and reconstructed to obtain the detailed images of the first-to sixth-order gravitational *** incorporating the known geological features,the gravitational field responses of the main faults in the Ying-Qiong Basin were identified in the detailed fields,and the power spectrum analysis yielded the depths of 1.4,8,15,26.5,and 39 km for the average burial depths of the bottom surfaces from the first-to fifth-order detailed fields,*** four main faults in the Yinggehai Basin all have a large active depth range:fault A(No.1)is between 5 and 39 km,fault B is between 26.5 and 39 km,and faults C and D are between 15 and 39 ***,the depth of active faults in the Qiongdongnan Basin is relatively shallow,mainly between 8 and 26.5 km.

关键词： Yinggehai Basin Qiongdongnan Basin active depth of fault Bouguer gravity anomaly wavelet multi-scale analysis power spectrum

A catastrophic natural disaster chain of typhoon-rainstorm-landslide-barrier lake-flooding in Zhejiang Province, China

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Journal of Mountain Science 2021年第8期18卷 2108-2119页

作者： CUI yu-long HU Jun-hong xu Chong ZHENG Jun WEI Jiang-bo School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan232001China National Institute of Natural Hazards Ministry of Emergency Management of China(former Institute of Crustal DynamicsChina Earthquake Administration)Beijing100085China Department of Civil Engineering Zhejiang UniversityHangzhou310058China College of Geology and Environment Xi’an University of Science and TechnologyXi’an710054China

On August 10,2019,due to the effect of a rainstorm caused by Super Typhoon Lekima,a landslide occurred in Shanzao Village,*** blocked the Shanzao stream,forming a barrier lake,and then the barrier lake *** is a rare natural disaster chain of typhoon-rainstorm-landslide-barrier *** study was built on field surveys,satellite image interpretation,the digital elevation model(DEM),engineering geological analysis and empirical *** purpose was to reveal the characteristics and causes of the landslide,the features and formation process of the barrier lake and the dam break flooding *** results show that the volume of the landslide deposit is approximately 2.4×105 *** burst mode of the landslide dam is overtopping,which took only 22 minutes from the formation of the landslide dam to its *** dam-break peak flow was 1353 m3/s,and the average velocity was 2.8–3.0 m/*** study shows that the strongly weathered rock and soil slope has low strength and high permeability under the condition of heavy rainfall,which reminds us the high risk of landslides and the importance of accurate early warning of landslides under heavy rainfalls in densely populated areas of Southeast China,as well as the severity of the disaster chain of typhoon-rainstorm-landslide-barrier lake-flooding.

关键词： Natural disaster chain Landslide Barrier lake Dam break flood Typhoon Lekima