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Saturation evaluation for fine-grained sediments

Geoscience Frontiers 2023年第4期14卷 57-71页

作者： Linqi Zhu Shiguo Wu xueqing zhou Jianchao Cai Key Laboratory of Marine Geophysics and Georesource Institute of Deep-sea Science and EngineeringChinese Academy of SciencesSanya 572000China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China University of Chinese Academy of Sciences Beijing 100049China Sanya Institute of Deep-sea Science and Engineering Chinese Academy of SciencesSanya 572000China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China

Accurate quantification of the gas hydrate content in the deep sea is useful for assessing the resource potential and understanding the role of gas hydrates in the global carbon *** logging data combined with Archie’s equation are often used to calculate gas hydrate saturation,but the reliability is dependent on the rationality of the empirical parameter cementation factor and saturation *** present,an increasing number of fine-grained hydrate-rich sediment regions have been discovered worldwide through drilling efforts,and the reservoir types and hydrate distribution are diverse,which differs greatly from that of coarse-grained reservoirs of hydrate-bearing *** results in vertical variations in m and n through *** present,the saturation evaluation effect of these reservoirs cannot be *** this work,a theory for the determination of the cementation factor and saturation index was first proposed to obtain reliable and variable values of the empirical ***,a hydrate saturation evaluation technique with variables m and n was formed based on the well logging *** technique was used to evaluate complex fine-grained hydrate-bearing reservoirs in several regions *** was found that the highest n could be 16,and the log calculation results were more consistent with the core hydrate ***,the cause of the excessively high n values was explained from physical principles,and the result was verified with actually well log *** future evaluations of the amount of hydrate resources in fine-grained sediment reservoirs worldwide,new saturation estimation methods should be taken into account to advance hydrate research.

关键词： Hydrate Fine-grained Cementation factor Saturation index Archie Petrophysics

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Total organic carbon content logging prediction based on machine learning:A brief review

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Energy Geoscience 2023年第2期4卷 100-107页

作者： Linqi Zhu xueqing zhou Weinan Liu Zheng Kong Institute of Deep-sea Science and Engineering Chinese Academy of SciencesSanyaHainan572000China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai ZhuhaiGuangdong519000China CNOOC China Limited LtdShenzhen BranchShenzhen518054China Exploration and Development Research Institute Shengli Oilfield CompanySINOPECDongyingShandong257029China

The total organic carbon content usually determines the hydrocarbon generation potential of a formation.A higher total organic carbon content often corresponds to a greater possibility of generating large amounts of oil or ***,accurately calculating the total organic carbon content in a formation is very *** research is focused on precisely calculating the total organic carbon content based on machine *** present,many machine learning methods,including backpropagation neural networks,support vector regression,random forests,extreme learning machines,and deep learning,are employed to evaluate the total organic carbon ***,the principles and perspectives of various machine learning algorithms are quite *** paper reviews the application of various machine learning algorithms to deal with total organic carbon content evaluation *** various machine learning algorithms used for TOC content predication,two algorithms,the backpropagation neural network and support vector regression are the most commonly used,and the backpropagation neural network is sometimes combined with many other algorithms to achieve better ***,combining multiple algorithms or using deep learning to increase the number of network layers can further improve the total organic carbon content *** prediction by backpropagation neural network may be better than that by support vector regression;nevertheless,using any type of machine learning algorithm improves the total organic carbon content prediction in a given research *** to some published literature,the determination coefficient(R^(2))can be increased by up to 0.46 after using machine *** learning algorithms may be the next breakthrough direction that can significantly improve the prediction of the total organic carbon *** the total organic carbon content based on machine learning is of great significance.

关键词： Total organic carbon content Well logging Machine learning Backpropagation neural network Support vector regression

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Rapid identification of high-quality marine shale gas reservoirs based on the oversampling method and random forest algorithm

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Artificial Intelligence in Geosciences 2021年第1期2卷 76-81页

作者： Linqi Zhu xueqing zhou Chaomo Zhang Institute of Deep-sea Science and Engineering Chinese Academy of SciencesSanya57200China Key Lab of Marine Georesources and Prospecting Hainan ProvinceSanya572000China Key Laboratory of Exploration Technologies for Oil and Gas Resources Ministry of EducationYangtze UniversityWuhan430100China

The identification of high-quality marine shale gas reservoirs has always been a key task in the exploration and development ***,due to the serious nonlinear relationship between the logging curve response and high-quality reservoirs,the rapid identification of high-quality reservoirs has always been a problem of low *** study proposes a combination of the oversampling method and random forest algorithm to improve the identification accuracy of high-quality reservoirs based on logging *** oversampling method is used to balance the number of samples of different types and the random forest algorithm is used to establish a highprecision and high-quality reservoir identification *** the perspective of the prediction effect,the reservoir identification method that combines the oversampling method and the random forest algorithm has increased the accuracy of reservoir identification from the 44%seen in other machine learning algorithms to 78%,and the effect is *** research can improve the identifiability of high-quality marine shale gas reservoirs,guide the drilling of horizontal wells,and provide tangible help for the precise formulation of marine shale gas development plans.

关键词： Marine shale gas Oversampling Random forest High-quality reservoir identification

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Controllable coating NiAl-layered double hydroxides on carbon nanofibers as anticorrosive microwave absorbers

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Journal of Materials Science & Technology 2023年第20期151卷 109-118页

作者： Ying Zhang Liang Li Changlong Du Gengping Wan Qiyi Wei xueqing zhou Yanran Su Yang Xu Guizhen Wang State Key Laboratory of Marine Resource Utilization in South China Sea School of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China Collaborative Innovation Center of Ecological Civilization Hainan UniversityHaikou 570228China

For harsh real-world service settings,it is essential to build corrosion-resistant,diverse,and effective microwave ***,we successfully prepared a 3D NiAl-layered double hydroxide/carbon nanofibers(NiAl-LDH/CNFs)composite material as an anticorrosive microwave absorber assisted by an atomic layer deposition(ALD)*** size,coating thickness,and content of NiAl-LDH can be readily adjusted by changing the ALD cycling *** optimized NiAl-LDH/CNFs demonstrates prominent microwave absorbing properties including the strongest reflection loss of–55.65 dB and the widest effective absorption bandwidth of 4.80 GHz with only 15 wt%*** reasons for performance improvement are the cooperative effect of interfacial polarization loss,conduction loss,and three-dimensional porous ***,due to the synergistic effects between the excellent impermeability of CNFs and the trapping ability of NiAl-LDH for chloride ions,NiAl-LDH/CNFs exhibits strong corrosion resistances under acidic,neutral,and alkaline ***-LDH/CNFs should be a potential candidate to simultaneously use for microwave absorption and corrosion resistance,and this work provides a certain guiding significance for designing microwave absorbers that satisfy the corrosion resistance.

关键词： Microwave absorption Anticorrosion Atomic layer deposition(ALD) Double layered hydroxides(LDHs) Carbon nanofibers(CNFs)

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Apatinib reduces liver cancer cell multidrug resistance by modulating NF-κB signaling pathway

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BIOCELL 2024年第9期48卷 1331-1341页

作者： XIAOXIAO HE xueqing zhou JINPENG ZHANG MINGFEI ZHANG DANHONG ZENG HENG ZHANG SHUCAI YANG Department of Gastroenterology The Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Department of Clinical Laboratory Pingshan HospitalSouthern Medical University(Pingshan District People’s Hospital of Shenzhen)Shenzhen518118China

Objectives:This investigation aimed to elucidate the inhibitory impact of apatinib on the multidrug resistance of liver cancer both in vivo and in ***:To establish a Hep3B/5-Fu resistant cell line,5-Fu concentrations were gradually increased in the culture ***3B/5-Fu cells drug resistance and its alleviation by apatinib were confirmed via flow cytometry and Cell Counting Kit 8(CCK8)***,Nuclear factor kappa B(NF-κB)siRNA was transfected into Hep3B/5-Fu cells to assess alterations in the expression of multidrug resistance(MDR)-related genes and *** mice were injected with Hep3B/5-Fu cells to establish subcutaneous xenograft tumors and then categorized into 8 treatment *** treatments included oxaliplatin,5-Fu,and *** the tumor tissues,the expression of MDRrelated genes was elucidated via qRT-PCR,immunohistochemistry,and Western blot ***:The apatinibtreated mice indicated slower tumor growth with smaller size compared to the control *** the in vivo and in vitro investigations revealed that the apatinib-treated groups had reduced expression of MDR genes GST-pi,LRP,MDR1,and ***:Apatinib effectively suppresses MDR in human hepatic cancer cells by modulating the expression of genes related to MDR,potentially by suppressing the NF-κB signaling pathway.

关键词： Apatinib Liver cancer Multidrug resistance NF-κB signaling pathway

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Erratum to: Inhibition of chemotherapy-related breast tumor EMT by application of redox-sensitive siRNA delivery system CSO-ss-SA/siRNA along with doxorubicin treatment

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第2期23卷 171-172页

作者： Xuan LIU xueqing zhou Xuwei SHANG Li WANG Yi LI Hong YUAN Fuqiang HU College of Pharmaceutical Science Zhejiang UniversityHangzhou 310058China

The original version of this article(Liu et al.,2020)unfortunately contained some ***.7c and 7d in p.229 were *** upper left and bottom left pictures in Fig.7c were accidentally duplicated with the pictures at the sam... 详细信息

关键词： treatment picture

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Pterostilbene accelerates wound healing by modulating diabetes-induced estrogen receptorβsuppression in hematopoietic stem cells

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Burns & Trauma 2021年第1期9卷 629-641页

作者： Weiguo Xie xueqing zhou Weigang Hu Zhigang Chu Qiongfang Ruan Haimou Zhang Min Li Hongyu Zhang Xiaodong Huang Paul Yao Institute of Burns Tongren Hospital of Wuhan University(Wuhan Third Hospital)Wuhan 430060China State Key Lab of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhan430062China Department of Hematology Peking University Shenzhen HospitalShenzhen518036China

Background:Delayed wound healing is one of the major complications of diabetes mellitus and is characterized by prolonged inflammation,delayed re-epithelialization and consistent oxidative stress,although the detailed mechanism remains *** this study,we aimed to investigate the potential role and effect of pterostilbene(PTE)and hematopoietic stem cells(HSCs)on diabetic wound ***:Diabetic rats were used to measure the epigenetic changes in both HSCs and peripheral blood mononuclear cells(PBMCs).A cutaneous burn injury was induced in the rats and PTE-treated diabetic HSCs were transplanted for evaluation of wound *** addition,several biomedical parameters,including gene expression,oxidative stress,mitochondrial function and inflammation in macrophages,were also ***:Our data showed that PTE had a much stronger effect than resveratrol on accelerating diabetic wound healing,likely because PTE can ameliorate diabetes-induced epigenetic changes to estrogen receptorβpromoter in HSCs,while resveratrol *** investigation showed that bone marrow transplantation of PTE-treated diabetic HSCs restores diabetes-induced suppression of estrogen receptorβand its target genes,including nuclear respiratory factor-1 and superoxide dismutase 2,and protects against diabetes-induced oxidative stress,mitochondrial dysfunction and elevated pro-inflammatory cytokines in both PBMCs and macrophages,subsequently accelerating cutaneous wound ***:HSC may play an important role in wound healing through transferring epigenetic modifications to subsequent PBMCs and macrophages by differentiation,while PTE accelerates diabetic wound healing by modulating diabetes-induced epigenetic changes in ***,PTE may be a novel therapeutic strategy for diabetic wound healing.

关键词： Hematopoietic stem cells Inflammation Oxidative stress Pterostilbene Wound healing

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Utilization of Livestock's Dejection as Biogas Origin in Building New Countryside in Heilongjiang Province--Developing Utilization of Biogas and Promoting Energy-saving and Emission Reduction

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Journal of Northeast Agricultural University(English Edition) 2011年第1期18卷 91-96页

作者： SHEN xueqing CUI Lijuan zhou Dongxing Resources and Environmental Sciences College Northeast Agricultural University Harbin 150030 China

With the startup and execution of new socialistic countryside construction in Heilongjiang Province,the transition from castoff to resource is strengthened in the countryside,aiming at neat appearance of the countryside,clean production and saving *** produce biogas and provide the countryside with new energy by means of turning livestock＇s dejection into resources,composting of the plant and animal＇s leavings in the courtyard and even in the *** is helpful for the countryside to conserve the energy and reduce emission of the *** it also plays an important role in protecting the eco-environment,beautifying homestead and developing the ecological agriculture and so *** liquid and solid residue in the biogas production can be reused as fertilizer for crops or food for animals after pretreatment,which is propitious to accelerate the development of the circular economy in Heilongjiang Province.

关键词： new socialistic countryside construction composting of livestock's dejection energy saving and emission reduction

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Development of a rapid and efficient system for CR genes identification based on hairy root transformation in Brassicaceae

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Horticultural Plant Journal 2024年第4期10卷 1049-1060页

作者： Wenlin Yu Lu Yang Yuanyuan Xiang Rongde Li xueqing zhou Longcai Gan Xianyu Xiang Yunyun Zhang Lei Yuan Yanqing Luo Genze Li Youning Wang Yinhua Chen Peng Chen Chunyu Zhang National Key Laboratory of Crop Genetic Improvement and College of Plant Science and Technology Huazhong Agricultural UniversityWuhanHubei 430070China National Key Laboratory for Tropical Crop Breeding Sanya Nanfan Research InstituteHainan UniversitySanyaHainan 572025China National Agro-Tech Extension and Service Center Beijing 100125China Industrial Crops Research Institute Yunnan Academy of Agricultural SciencesKunmingYunnan 650221China College ofAgronomy NorthwestA&F UniversityYanglingShaanxi712100China

Many economically important crops and vegetables belonging to the cruciferous family are heavily endangered by clubroot disease caused by Plasmodiophora brassicae *** of clubroot resistant cultivars based on mapping and cloning of resistant genes is commonly regarded as the most cost-effective and efficient way to fight against this *** traditional way of R gene functional validation requires stable transformation that is both time-and *** this study,a rapid and efficient hairy-root transgenic protocol mediated by Agrobacterium rhizogenes was *** transformation positive rate was over 80%in Brassica napus showed by GUS reporter gene and this transformation only took 1/6 of the time compared with stable *** system was applicable to different *** varieties and other cruciferous crops including Brassica rapa and Brassica *** particular,two known CR genes,CRA3.7.1 and CRA8.2.4 were used respectively,as example to show that the system works well for CR gene study combined with subsequent *** infection in *** importantly,it works both in over-expression that led to disease resistance,as well as in RNAi which led to disease susceptible ***,this system can be used in batch-wise identification of CR genes,and also offered the possibility of manipulating key genes within the *** genome that could improve our knowledge on host-pathogen interaction.

关键词： Brassicaceae Agrobacterium rhizogenes Hairy root transformation Clubroot Gene function

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基于嵌入式主题模型的中美疫情政策主题发现研究

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情报理论与实践 2022年第5期45卷 173-180页

作者：周雪晴吴鹏南京理工大学经济管理学院江苏南京210094 南京理工大学智能制造学院江苏南京210094

[目的/意义]通过对中美在疫情期间发布的政策文本进行主题建模与分析,发现中美两国在面对疫情时的应对措施与关注重心,从而为应对其他类似的重大公共卫生安全事件提供参考。[方法/过程]采用结合词嵌入的主题模型,对爬取的中美政策文本... 详细信息

[目的/意义]通过对中美在疫情期间发布的政策文本进行主题建模与分析,发现中美两国在面对疫情时的应对措施与关注重心,从而为应对其他类似的重大公共卫生安全事件提供参考。[方法/过程]采用结合词嵌入的主题模型,对爬取的中美政策文本进行主题建模和主题发现,并借助词云进行可视化展示。[结果/结论]中美两国在基本的疫情政策目标上保持一致,但在维持稳定的关注主体、封闭隔离程度以及疫苗问题等实现目标的方式上存在差异。

关键词：新型冠状病毒肺炎疫情政策文本分析嵌入式主题模型主题发现

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