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Combinatorial reasoning-based abnormal sensor recognition method for subsea production control system

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Petroleum Science 2024年第4期21卷 2758-2768页

作者： Rui zhang Bao-Ping Cai Chao Yang Yu-Ming Zhou yong-hong Liu Xin-Yang Qi College of Mechanical and Electronic Engineering China University of Petroleum BGP Inc. China National Petroleum Corporation

The subsea production system is a vital equipment for offshore oil and gas production. The control system is one of the most important parts of it. Collecting and processing the signals of subsea sensors is the only way to judge whether the subsea production control system is normal. However, subsea sensors degrade rapidly due to harsh working environments and long service time. This leads to frequent false alarm incidents. A combinatorial reasoning-based abnormal sensor recognition method for subsea production control system is proposed. A combinatorial algorithm is proposed to group sensors. The long short-term memory network(LSTM) is used to establish a single inference model. A counting-based judging method is proposed to identify abnormal sensors. Field data from an offshore platform in the South China Sea is used to demonstrate the effect of the proposed method. The results show that the proposed method can identify the abnormal sensors effectively.

关键词： Abnormal sensor Combinatorial algorithm Fault identification Subsea production control system

Extending Structures for Gel'fand-Dorfman Bialgebras

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Acta Mathematica Sinica,English Series 2024年第2期40卷 619-638页

作者： Jia Jia WEN Yan yong hong School of Mathematics Hangzhou Normal UniversityHangzhou 311121P.R.China

Gel'fand-Dorfman bialgebra,which is both a Lie algebra and a Novikov algebra with some compatibility condition,appeared in the study of Hamiltonian pairs in completely integrable *** also emerged in the description of a class special Lie conformal algebras called quadratic Lie conformal *** this paper,we investigate the extending structures problem for Gel'fand-Dorfman bialgebras,which is equivalent to some extending structures problem of quadratic Lie conformal ***,given a Gel'fand-Dorfman bialgebra(A,o,[.,.]),this problem is how to describe and classify all Gel'fand-Dorfman bialgebra structures on a vector space E(A⊂E)such that(A,o,[.,.])is a subalgebra of E up to an isomorphism whose restriction on A is the identity *** by the theories of extending structures for Lie algebras and Novikov algebras,we construct an object gH2(V,A)to answer the extending structures problem by introducing the notion of a unified product for Gel'fand-Dorfman bialgebras,where V is a complement of A in *** particular,we investigate the special case when dim(V)=1 in detail.

关键词： Gel'fand-Dorfman bialgebra Lie conformal algebra Extending structures problem Novikovalgebra

A repertoire of intronic lariat RNAs reveals tissue-specific regulation and target mimicry potential in plants

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Science China(Life Sciences) 2024年第6期67卷 1280-1291页

作者： yong zhang Xiaotuo zhang Qi Tang Lei Li Ting Jiang Yixiao Fang hong zhang Jixian Zhai Guodong Ren Binglian Zheng State Key Laboratory of Genetic Engineering Institute of Plant BiologySchool of Life SciencesFudan UniversityShanghai 200438China Department of Biology School of Life SciencesSouthern University of Science and TechnologyShenzhen 518055China

Lariat RNA is concomitantly produced by excised intron during RNA splicing,which is usually debranched by DBR1,an RNA debranching ***,increasing evidence showed that some lariat RNA could escape *** is known about how and why these lariat RNAs could be *** comparing the atlas of lariat RNAs between the non-dividing cell(mature pollen)and three actively dividing tissues(young shoot apex,young seeds,and young roots),we identified hundreds to thousands of lariat RNA naturally retained in each tissue,and the incidence of lariat RNA retention is much less in shoot apex while much more in *** lariat RNAs derived from the same intron or different lariat RNAs from the same pre-m RNA could be retained in one tissue while degraded in the other *** deciphering lariat RNA sequences,we identified an AG-rich(RAAAAVAAAR)motif and a UC-rich(UCUCUYUCUC)motif for pollen-specific and the other three tissues-retained lariat RNAs,*** of the pollen-specific AG-rich motif indeed enhanced lariat RNA retention in ***,hundreds of lariat RNAs harbored mi RNA binding sites,and dual-luciferase reporter assay showed that these natural lariat RNAs had the potential to protect expression of mi RNA target ***,our results uncover that selective retention of lariat RNA is an actively regulatory process,and provide new insights into understanding how lariat RNA metabolism may impact mi RNA activity.

关键词： intron turnover lariat RNA miRNA RNA splicing DBR1

State of the art of lightweight aggregates used in lightweight refractories for working lining of high-temperature furnaces

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Journal of Iron and Steel Research International 2024年第6期31卷 1320-1343页

作者： Wei zhang Wen-yong Dai Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Research and Development Department AGC Plibrico(Dalian)Industries Inc.Dalian 116600LiaoningChina

Lightweight refractories for the working lining of high-temperature furnaces play an important role in the smelting of advanced steels and *** prepare lightweight refractories for the working lining of high-temperature furnaces,the synthesis of lightweight aggregates is the ***,the research on the synthesis of lightweight aggregates with high service temperature,low thermal conductivity,high strength,and good slag resistance has received widespread *** available literature on the synthesis of lightweight aggregates was summarized,including corundum,mullite,mullite-corundum,spinel,corundum-spinel,cordierite,cordierite-mullite,calcium hexaluminate,corundum-calcium hexaluminate,bauxite,magnesia,magnesia-based,and forsterite-based ***,the future development trend of lightweight aggregates was proposed.

关键词： Lightweight aggregate Lightweight refractory Working lining Apparent porosity Closed porosity Thermal conductivity Pore-forming approach

OCTA characteristics in non-arteritic central retinal artery occlusion and correlation with visual acuity

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 289-296页

作者： hong-Xia Gong Bin Wu Shi-yong Xie Wei zhang Song Chen Tianjin Key Lab of Ophthalmology and Visual Science Department of Ophthalmology for Integrated Traditional Chinese and Western MedicineTianjin Eye HospitalTianjin 300020China Clinical College of Ophthalmology Tianjin Medical UniversityTianjin 300010China Eye Hospital Affiliated to Nankai University Tianjin 300020China

AIM:To observe the retinal and choroidal circulations in patients with non-arteritic permanent central retinal artery occlusion(NA-CRAO)via optical coherence tomography angiography(OCTA)and analyze their correlation with visual ***:Sixty-two eyes with clinically confirmed acute NA-CRAO were included in the study and divided into:A type(mild n=29),B type(moderate n=27)and C type(severe n=6)based on the degree of visual loss,retinal edema,and arterial blood flow delay in fundus fluorescence angiography(FFA).Contralateral healthy eyes were used as the control ***-corrected visual acuity(BCVA),slit lamp microscopy,indirect ophthalmoscopy,fundus color photography,OCTA,and FFA were ***’s correlation analysis was used to determine the correlations between retinal and choroidal vessels and visual ***:There were no statistically significant differences in age,gender,and intraocular pressure among the three types and the control group(P>0.05).Vessel density in deep capillary plexus(VD-DCP)significantly decreased(P<0.05)in all three types of NA-CRAO patients compared to the control *** density in superficial vascular plexus(VD-SVP)significantly decreased(P<0.05)in type A patients and choriocapillaris flow area significantly decreased(P<0.05)in type B and type C patients compared to the control group;while outer retinal flow areas significantly increased in the type A(P<0.05)and decreased in type C patients(P<0.05).The retinal thickness significantly increased in type C group(P<0.05).The VD-SVP at fovea in the type A was significantly lower than both of type B and *** VD-SVP at nasal parafovea in type A and B was significantly lower than type C(P<0.05).The logMAR BCVA of type A was significantly better than that of type B and C groups(P<0.05).Spearman’s correlation analysis showed that the logMAR BCVA was positively correlated with VD-SVP at fovea(r=0.679,P=0.031)and nasal parafovea(r=0.826,P=0.013).CONCLUSION:OCTA is valua

关键词： non-arteritic central retinal artery occlusion fundus fluorescence angiography optical coherence tomography angiography retinal vessel density visual acuity

Planar matrices and arrays of Feynman diagrams:poles for higher k

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Communications in Theoretical Physics 2024年第4期76卷 1-13页

作者： Alfredo Guevara yong zhang Perimeter Institute for Theoretical Physics WaterlooON N2L 2Y5Canada Department of Physics&Astronomy University of WaterlooWaterlooON N2L 3G1Canada Society of Fellows Harvard UniversityCambridgeMA 02138United States of America CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBejing 100049China

Planar arrays of tree diagrams were introduced as a generalization of Feynman diagrams that enable the computation of biadjoint amplitudes m_(n)(^(k))for k>*** this follow-up work,we investigate the poles of m_(n)(^(k))from the perspective of such *** general k,we characterize the underlying polytope as a Flag Complex and propose a computation of the amplitude-based solely on the knowledge of the poles,whose number is drastically less than the number of the full *** an example,we first provide all the poles for the cases(k,n)=(3,7),(3,8),(3,9),(3,10),(4,8)and(4,9)in terms of their planar arrays of degenerate Feynman *** then implement simple compatibility criteria together with an addition operation between arrays and recover the full collections/arrays for such *** the way,we implement hard and soft kinematical limits,which provide a map between the poles in kinematic space and their combinatoric *** use the operation to give a proof of a previously conjectured combinatorial duality for arrays in(k,n)and(n-k,n).We also outline the relation to boundary maps of the hypersimplex Δ_(k,n) and rays in the tropical Grassmannian Tr(k,n).

关键词： Feynman diagrams biadjoint amplitudes poles

自拟中药组方联合同步放化疗治疗晚期食管癌患者的短期疗效及对其生存情况的影响

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世界中西医结合杂志 2024年第4期19卷 769-773页

作者：王玉强张永红齐增平乔钦增郭秋峰路大鹏路洪超河北省退役军人总医院肿瘤内科河北邢台054000 河北省退役军人总医院放疗科河北邢台054000 河北省退役军人总医院医学影像科河北邢台054000 河北省退役军人总医院肿瘤外科河北邢台054000

目的探讨自拟中药组方联合同步放化疗对晚期食管癌患者短期疗效及生存预后的影响。方法选取2018年2月—2019年3月期间在河北省退役军人总医院接受治疗的80例晚期食管癌患者作为研究对象。采用随机数字表法分为对照组和观察组,每组各4... 详细信息

目的探讨自拟中药组方联合同步放化疗对晚期食管癌患者短期疗效及生存预后的影响。方法选取2018年2月—2019年3月期间在河北省退役军人总医院接受治疗的80例晚期食管癌患者作为研究对象。采用随机数字表法分为对照组和观察组,每组各40例。两组患者均行同步放化疗治疗,观察组在对照组基础上加以自拟中药组方治疗。治疗8周后,观察比较两组患者短期疗效、中医证候积分、1年无进展生存率、血液指标及毒副作用发生情况。结果治疗后观察组总有效率77.50%(31/40)明显高于对照组55.00%(22/40),差异有统计学意义(P<0.05)。治疗后两组患者主症、次症积分均较治疗前明显降低,差异有统计学意义(P<0.05);且观察组主症、次症积分均明显低于对照组,差异有统计学意义(P<0.05)。治疗后两组患者CD44及唾液酸水平均较治疗前明显降低,差异有统计学意义(P<0.05);且观察组CD44及唾液酸水平均明显低于对照组,差异有统计学意义(P<0.05)。治疗期间,观察组患者不同严重程度骨髓抑制、肝功能损害及恶心呕吐发生率均明显高于对照组,差异有统计学意义(P<0.05)。观察组1年无进展生存率72.50%(29/40)明显优于对照组50%(20/40),差异有统计学意义(P<0.05)。结论自拟中药组方联合同步放化疗较单独使用同步放化疗可有效提高晚期食管癌患者临床疗效,提高1年无进展生存率,降低中医证候评分、CD44、唾液酸水平及毒副作用发生率。

关键词：中药组方同步放化疗晚期食管癌生存预后

基于抗生素和除草剂敏感性筛选适宜裂叶地黄遗传转化系统的抗性标记

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湖北医药学院学报 2024年第4期43卷 358-363页

作者：叶峥秀罗湘胤游磊张泽志石宪铭李琳郑兰兰张勇洪湖北医药学院基础医学院药用植物实验室武当特色中药研究湖北省重点实验室十堰市农业科学院湖北十堰442000

目的:筛选适宜裂叶地黄遗传转化系统的抗性标记。方法:以裂叶地黄的种子为材料,采用不同浓度抗生素和除草剂对裂叶地黄的种子外植体进行处理,对比不同浓度的卡那霉素、潮霉素和除草剂草铵膦(Basta)的筛选效果,为裂叶地黄遗传转化体系的... 详细信息

目的:筛选适宜裂叶地黄遗传转化系统的抗性标记。方法:以裂叶地黄的种子为材料,采用不同浓度抗生素和除草剂对裂叶地黄的种子外植体进行处理,对比不同浓度的卡那霉素、潮霉素和除草剂草铵膦(Basta)的筛选效果,为裂叶地黄遗传转化体系的构建提供基础。结果:裂叶地黄种苗对Basta和潮霉素敏感性的强度强于卡那霉素。Basta浓度为1 mg/L和2 mg/L时,地黄种苗培养30 d存活率为38.03%和5.07%,对裂叶地黄种苗生长有明显的抑制作用;浓度为5 mg/L时,完全抑制裂叶地黄种苗的生长,可作为遗传转化抗性苗筛选的选择压。潮霉素浓度为10 mg/L时,地黄种苗存活率为34.17%,对裂叶地黄种苗生长有明显的抑制作用;浓度为20 mg/L时,将裂叶地黄种苗全部致死,可作为抗性苗筛选的选择压。卡那霉素浓度为50 mg/L时,种苗白化率达到89.17%,种苗生长受到明显抑制。结论:Basta适宜筛选浓度为5 mg/L,潮霉素适宜筛选浓度为20 mg/L,卡那霉素适宜筛选浓度为不低于50 mg/L。

关键词：裂叶地黄遗传转化抗生素除草剂

Preparation of a high-performance synthetic pitch from aromatic hydrocarbons containing N/Cl

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新型炭材料（中英文） 2024年第4期39卷 655-667页

作者： zhang Yu-kun LIN Xiong-chao GAO hong-feng XI Wen-shuai WANG Cai-hong WANG yong-gang School of Chemical&Environmental Engineering China University of Mining and Technology(Beijing)Beijing 100083China

The preparation of a synthetic pitch from aromatic monomers could easily regulate structure orientation at the molecu-lar level,which would be useful in *** isotropic synthetic pitch was prepared by a chlorine-and/or nitrogen-induced sub-stitution polymerization reaction method using aromatic hydrocarbon precursors containing Cl and N,which for this study were chloromethyl naphthalene and *** method was verified by investigating the structural changes under different synthesis conditions,and the synthesis mechanism induced by aromatics containing Cl was also *** result shows that the pyridinic N in quinoline contains a lone pair of electrons,and is an effective active site to induce the polymerization reaction by coupling with aromatic hydrocarbons containing *** reaction between such free radicals causes strong homopolymerization and oligomeriza-tion.A higher reaction temperature and longer reaction time significantly increased the degree of polymerization and thus increased the softening point of the pitch.A linear molecular structure was formed by the Cl substitution reaction,which produced a highly spinnable pitch with a softening point of 258.6℃,and carbon fibers with a tensile strength of 1163.82 MPa were *** study provides a relatively simple and safe method for the preparation of high-quality spinnable pitch.

关键词： Quinoline 1-Chloromethyl-naphthalene Synthetic pitch Spinnability Carbon fiber