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陆丰油田古近系低渗高温深层储层自源闭式强化注水技术研究与应用

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中国海上油气 2024年第2期36卷 159-166页

作者：刘成林任杨孙林刘伟新匡腊梅张强马喜超中海石油(中国)有限公司深圳分公司广东深圳518067 中海油能源发展股份有限公司工程技术分公司天津300452

受海上平台空间、作业成本、注水水源、施工工艺等条件限制,如何高效注水开发陆丰油田古近系低渗高温深层储层面临挑战。以陆丰油田古近系储层试验井为例,开展了注水可行性分析,优选了合适的水源层位和注入层;采用了同井自源类水层补充... 详细信息

受海上平台空间、作业成本、注水水源、施工工艺等条件限制,如何高效注水开发陆丰油田古近系低渗高温深层储层面临挑战。以陆丰油田古近系储层试验井为例,开展了注水可行性分析,优选了合适的水源层位和注入层;采用了同井自源类水层补充地层能量的自源闭式注水工艺,研发的配套配水器可满足调节扭矩≤5 N·m、耐压差35 MPa,测调仪器可满足耐温175℃、耐压60 MPa的性能要求,实现了海上平台深层一井多用、无须地面设备的注水新方式;采用了电缆传输的爆燃压裂工艺,实现快速、高效作业,措施的时间控制在14 h以内,时效提高10倍以上,火药密度超过6 kg/m;通过强溶缓速酸酸化复合增效。自源闭式强化注水技术已在陆丰油田试验井M10井取得成功应用,注水高效,受效井增产降水效果明显。本文研究成果有效拓展了注水技术在低渗、深层、高温储层中的应用,可为类似储层规模开发提供借鉴。

关键词：陆丰油田自源闭式注水古近系储层深层爆燃压裂酸化

Evaluation of maize root growth and genome-wide association studies of root traits in response to low nitrogen supply at seedling emergence

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The Crop Journal 2021年第4期9卷 794-804页

作者： xichao sun.wei ren.pen. wan. Fanjun Chen Lixing Yuan Qingchun Pan Guohua Mi College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationChina Agricultural UniversityBeijing 100193China Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsTianjin 300191China

Nitrogen(N) deficiency is one of the main factors limiting maize(Zea mays L.) productivity. Genetic improvement of root traits could improve nitrogen use efficiency. An association panel of 461 maize inbred lines was assayed for root growth at seedling emergence under high-nitrate(HN, 5 mmol L^(-1))and low-nitrate(LN, 0.05 mmol L^(-1)) conditions. Twenty-one root traits and three shoot traits were measured. Under LN conditions, the root-to-shoot ratio, root dry weight, total root length, axial root length,and lateral root length on the primary root were all increased. Under LN conditions, the heritability of the plant traits ranged from 0.43 to 0.82, a range much wider than that of 0.27 to 0.55 observed under HN conditions. The panel was genotyped with 542,796 high-density single-nucleotide polymorphism(SNP) markers. Totally 328 significant SNP markers were identified using either mixed linear model(MLM) or general linear model analysis, with 34 detected by both methods. In the 100-kb intervals flanking these SNP markers, four candidate genes were identified. Under LN conditions, the protoporphyrinogen IX oxidase 2 gene was associated with total root surface area and the DELLA protein-encoding gene was associated with the length of the visible lateral root zone of the primary root. Under HN conditions, a histone deacetylase gene was associated with plant height. Under both LN and HN conditions, the gene encoding MA3 domain-containing protein was associated with the first whorl crown root number. The phenotypic and genetic information from this study may be exploited for genetic improvement of root traits aimed at increasing NUE in maize.

关键词： Genome-wide association study(GWAS) Nitrogen Maize Root

Effect of Different Initial pH on the Storage Characteristics and Shelf Life of Liquid Diet for Suckling and Weanling Piglets

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Journal of Integrative Agriculture 2014年第1期13卷 134-139页

作者： HE Yu-yong MA pen LIU Xiao-lan wan. ren-hua LU wei College of Animal Science and Technology Jiangxi Agricultural University

An experiment was conducted to investigate the effect of different initial pH on the storage characteristics and shelf life of liquid diet. 45 polypropylene bags were allotted to treatments 1, 2 and 3 on average, 100 g diet and 200 g water were placed into each polypropylene bag, food-grade DL-lactic acid was added to each bag at a rate of 0.0 mL in treatment l, 1.2 mL in treatment 2 and 4.7 mL in treatment 3, air was artificially expelled from each bag prior to heat-sealing. All bags were placed into a cage, cooked with steam at 90~C for 30 rain under normal pressure, then taken out and stored from day 0 to 60 at room temperature. Results indicated that liquid diet in treatment 3 achieved the highest total sensory scores, the pH value had a tendency to decrease and the bacteria count had a tendency to increase in the liquid diet with the advancing of storage time with the advancing of storage time, lowering the initial pH of liquid diet decreased the bacteria count, the AFBl and ZEN concentrations and increased the starch gelatinization degree from day 30 to 60, liquid diet in treatment 3 had a lower （P〈0.01） bacteria count and a higher （P〈0.05） starch gelatinization degree at day 30 and 45 than liquid diet in treatment 1. In conclusion, lowering the initial pH of liquid diet with lactic acid to pH 4 could effectively improve the storage characteristics and shelf life of liquid diet.

关键词： initial pH storage characteristics shelf life liquid diet lactic acid

Measurement of the neutron total cross section of^(9)Be at the Back-n white neutron source of CSNS

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Chinese Physics C 2024年第8期48卷 140-152页

作者： Jiangbo Bai Jingyu Tang Liqun Shi Yonghao Chen Han Yi Jie Bao Yu Bao Ping Cao Haolei Chen Zhen Chen Zengqi Cui Ruirui Fan Changqing Feng Keqing Gao Xiaolong Gao MinHao Gu Changcai Han Guozhu He Yongcheng He Yang Hong Yiwei Hu Hanxiong Huang Xiru Huang Haoyu Jiang wei Jiang Zhijie Jiang Hantao Jing Ling Kang Bo Li Chao Li Jiawen Li Qiang Li Xiao Li Yang Li Jie Liu Shubin Liu Ze Long Guangyuan Luan Changjun Ning Mengchen Niu Binbin Qi Jie ren xichao Ruan Zhaohui Song Kang sun Zhijia sun Zhixin Tan Xinyi Tang Binbin Tian Lijiao wan. pengcheng wan. Zhaohui wan. Xiaoguang Wu Xuan Wu Likun Xie Xiaoyun Yang Li Yu Tao Yu Yongji Yu Guohui Zhang Linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Luping Zhou Zhihao Zhou Kejun Zhu Institute of Modern Physics Fudan UniversityShanghai 200433China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Sate Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

The neutron total cross section data of^(9)Be are essential in the nuclear structure model research of light nuclei and nuclear power *** neutron total cross section of^(9)Be in the 0.3 eV−120 MeV energy region has been measured using time-of-flight and transmission methods with the Neutron Total Cross Sectional Spectrometer(NTOX)based on the multi-cell fast fission chamber at the China Spallation Neutron Source(CSNS)-Back-n white neutron source(Back-n).The fission count-neutron energy distributions of ^(235)U and ^(238)U without samples and with Be samples with three thicknesses were measured in the double-bunch operation mode for a beam power of 100 *** Bayesian method was used to eliminate the influence of the double-bunch problem on neutron measurement in the energy region above 10 *** neutron total cross section of^(9)Be results was consistent with ENDF/B-VIII.0 evaluation library data in the 0.3 eV−20 MeV energy *** the energy ranges of 0.3 eV to 10 keV and 0.01 to 20 MeV,the deviations between our results and the evaluation results of ENDF/B-VIII.0 were within 2.5%and 15%,*** the resonance energy region,the measured resonance energies in our experiment were 0.63,0.82,and 2.8 MeV,*** results showed that the total cross section uncertainties of three Be samples were within 2.2%in the energy region below 1 *** total cross section uncertainty of 30 mm Be from ^(235)U was the smallest and less than 5%in the energy region of 0.3 eV−120 *** results of this experiment can provide technical support for further data analysis and related nuclear data evaluation.

关键词： ^(9)Be neutron total cross section CSNS Back-n time-of-flight method transmission method multi-cell fast fission chamber

Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment

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Science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 83-91页

作者： Zhenhua Zhang Litao Yang Qian Yue Kejun Kang Yuanjing Li Haipeng An Greeshma C. Jianping Chang Yunhua Chen Jianping Cheng Wenhan Dai Zhi Deng Changhao Fang Xinping Geng Hui Gong Qiuju Guo Tao Guo Xuyuan Guo Li He Shengming He Jinwei Hu Hanxiong Huang Tuchen Huang Lin Jiang S.Karmakar Haubin Li Hanyu Li Jianmin Li Jin Li Qianyun Li renmingjie Li Xueqian Li Yulan Li Yifan Liang Bin Liao FongKay Lin ShinTed Lin Jiaxuan Liu Shukui Liu Yandong Liu Yu Liu Yuanyuan Liu Hao Ma Yucai Mao Qiyuan Nie Jinhua Ning Hui Pan Ningchun Qi Jie ren xichao Ruan Monoj Kumar Singh Tianxi sun Changjian Tang Yang Tian Guangfu wan. Junzheng wan. Li wan. Qing wan. Yufeng wan. Yunxiang wan. Henry Tsz-King Wong Shiyong Wu Yucheng Wu Haoyang Xing Rui Xu Yin Xu Tao Xue Yulu Yan Nan Yi Chunxu Yu Haijun Yu Jianfeng Yue Ming Zeng Zhi Zeng Bingtao Zhang Fengshou Zhang Lei Zhang Zhenyu Zhang Jizhong Zhao Kangkang Zhao Minggang Zhao Jifang Zhou Zuying Zhou Jingjun Zhu CDEX Collaboration Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Institute of Physics Academia SinicaTaipei 11529China NUCTECH Company Beijing 100084China YaLong River Hydropower Development Company Chengdu 610051China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China College of Physics Sichuan UniversityChengdu 610065China School of Physics Peking UniversityBeijing 100871China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China Sino-French Institute of Nuclear and Technology Sun Yet-sen UniversityZhuhai 519082China School of Physics Nankai UniversityTianjin 300071China Department of Physics Banaras Hindu UniversityVaranasi 221005India Department of Physics Beijing Normal UniversityBeijing 100875China 不详

Dark matter(DM)is a major constituent of the ***,no definite evidence of DM particles(denoted as“χ”)has been found in DM direct detection(DD)experiments to *** is a novel concept of detectingχfrom evaporating primordial black holes(PBHs).We search forχemitted from PBHs by investigating their interaction with target *** examined PBH masses range from 1×10^(15)to 7×10^(16)g under the current limits of PBH abundance *** 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory,we exclude theχ-electron(χ-e)elastic-scattering cross sectionσ_(χe)~5×10^(-29)cm^(2)forχwith a mass■keV from our *** the higher radiation background but lower energy threshold(160 eV),CDEX-10 fills a part of the gap in the previous ***(m_(χ),σ_(χe))can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关键词： CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector

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Polyarylene Ether Nitrile and Titanium Dioxide Hybrids as Thermal Resistant Dielectrics

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Chinese Journal of Polymer Science 2021年第2期39卷 211-218,I0007页

作者： ren-Bo wei Chen-Hao Zhan Yang Yang peng-Lin He Xiao-Bo Liu Research Branch of Advanced Functional Materials School of Materials and EnergyUniversity of Electronic Science and Technology of ChinaChengdu 610054China School of Chemical Engineering Northwest UniversityXi’an 710069China

With the expanding application of capacitors,thermal resistant dielectric materials are in high demand due to the increasing harsh environments where the capacitors are needed and the heat generated by the ***,we present polyarylene ether nitrile and titanium dioxide hybrids which can be used as thermal resistant dielectrics for these *** modified titanium dioxide(TiO_(2)-CN)and phthalonitrile end-capped polyarylene ether nitrile(pen-Ph)are firstly *** being cast into TiO_(2)-CN/pen nanocomposite films,these composites self-crosslink upon heating at 320℃for 4 h,forming the polyarylene ether nitrile and titanium dioxide hybrids(TiO_(2)-pen).Improved dielectric constants which are stable from room temperature to 200℃of these hybrids are observed,indicating the potential application of the hybrids as thermal resistant dielectrics.

关键词： Hybrid TiO2 Polyarylene ether nitrile Thermal resistance Dielectric properties

一种基于二次型的无线传感器网络密钥管理方案

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电子学报 2013年第2期41卷 214-219页

作者：王小刚石为人周伟高鹏蒋亿松重庆大学自动化学院重庆400044

针对现有的基于多项式的密钥预分配管理方案受限于节点间密钥共享率和网络连通率等问题,文中提出了一种基于二次型的无线传感器密钥管理方案.该方案突破现有二元t次对称多项式建立共享密钥的思路,引入多元非对称二次型多项式,利用二次... 详细信息

针对现有的基于多项式的密钥预分配管理方案受限于节点间密钥共享率和网络连通率等问题,文中提出了一种基于二次型的无线传感器密钥管理方案.该方案突破现有二元t次对称多项式建立共享密钥的思路,引入多元非对称二次型多项式,利用二次型特征值与特征向量之间的关系,分析证明二次型正交对角化的特性,生成密钥信息,节点则通过交换密钥信息实现身份认证,生成与邻居节点之间独立唯一的会话密钥.性能分析表明,与现有的密钥管理方案相比,方案在抗俘获性、连通性、可扩展性、通信开销和存储开销上有较大的改进.

关键词：无线传感器网络密钥管理二次型特征值特征向量

Rational Design of Layered SnS2 on Ultralight Graphene Fiber Fabrics as Binder-Free Anodes for Enhanced Practical Capacity of Sodium-Ion Batteries

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Nano-Micro Letters 2019年第4期11卷 173-184页

作者： Zongling ren Jie Wen wei Liu Xiaoping Jiang Yanheng Dong Xiaolong Guo Qiannan Zhao Guipeng Ji Ronghua wan. Ning Hu Baihua Qu Chaohe Xu College of Aerospace Engineering The State Key Laboratory of Mechanical TransmissionsChongqing UniversityChongqing 400044People’s Republic of China pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005People’s Republic of China College of Materials Science and Engineering Chongqing UniversityChongqing 400044People’s Republic of China MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems CQU-NUS Renewable Energy Materials and Devices Joint LaboratoryChongqing UniversityChongqing 400044People’s Republic of China

Generally,the practical capacity of an electrode should include the weight of non-active components such as current collector,polymer binder,and conductive additives,which were as high as 70 wt%in current reported works,seriously limiting the practical *** work pioneered the usage of ultralight reduced graphene fiber(rGF)fabrics as conductive scaffolds,aiming to reduce the weight of nonactive components and enhance the practical *** SnS2 nanosheets/rGF hybrids were prepared and used as binder-free electrodes of sodium-ion batteries(SIBs).The interfused graphene fibers endow the electrode a porous,continuous,and conductive *** in situ phase transformation from SnO2 to SnS2 could preserve the strong interfacial interactions between SnS2 and *** from these,the designed binder-free electrode delivers a high specific capacity of 500 mAh g?1 after 500 cycles at a current rate of 0.5 A g?1 with almost 100%Coulombic ***,the weight percentage of SnS2 in the whole electrode could reach up to 67.2 wt%,much higher than that of common electrode configurations using Cu foil,Al foil,or carbon cloth,significantly highlighting the ultralight characters and advantages of the rGF fabrics for using as binder-free electrodes of SIBs.

关键词： SnS2 Graphene fiber fabric Binder-free electrode Practical capacity Sodium-ion batteries

用于C_(6)D_(6)测量系统的高精度权重函数计算方法研究

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原子能科学技术 2022年第S01期56卷 249-257页

作者：王金成任杰阮锡超鲍杰栾广源孙琪丁琰琰刘超中国原子能科学研究院核数据重点实验室北京102413

本文基于中国散裂中子源(CSNS)反角白光中子束线(Back-n)的C_(6)D_(6)测量系统,以重要核素^(209)Bi为研究对象,利用蒙特卡罗方法研究了样品厚度对权重函数求取精度的影响,并发展了求解C_(6)D_(6)探测器的点态权重函数技术。研究结果表明... 详细信息

本文基于中国散裂中子源(CSNS)反角白光中子束线(Back-n)的C_(6)D_(6)测量系统,以重要核素^(209)Bi为研究对象,利用蒙特卡罗方法研究了样品厚度对权重函数求取精度的影响,并发展了求解C_(6)D_(6)探测器的点态权重函数技术。研究结果表明,目前Back-n上的C_(6)D_(6)测量系统权重函数的系统不确定度会随实验样品厚度的增加而迅速增加,而本工作得到的点态权重函数的系统不确定度在样品厚度增大到6 mm时仍小于0.5%,有利于提高厚样品实验数据的精度。本工作为将来在Back-n上开展如;Bi等高原子序数、小截面核素的中子辐射俘获截面的实验测量奠定了技术基础。

关键词：中子辐射俘获截面 C D 探测器脉冲高度权重技术权重函数