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Paleoenvironment reconstruction of the Middle Ordovician thick carbonate from western Ordos Basin, China

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Petroleum Science 2023年第1期20卷 48-59页

作者： jia-Qi Yang Jun-tao Zhang Zhi-Liang He tao Zhang School of Energy Resources China University of GeosciencesBeijing100083China SINOPEC Exploration and Production Research Institute Beijing100083China China Petrochemical Corporation Ltd. Beijing100728China

Reconstructing paleoenvironments has long been considered a vital component for understanding the development and evolution of carbonate *** Middle Ordovician Period is considered the archetypical greenhouse interval,and also a critical period in biological *** Middle Darriwilian isotope carbon excursion has been observed in many areas of the world and may be related to the biological explosions caused by decreases in the *** thick carbonate rocks in the fifth member of the Middle Ordovician Majiagou Formation in the Dingbei area of the Ordos Basin were chosen as an example,based on the concentration of major,trace and rare earth elements as well as C,O and Sr isotopic analyses,the paleoenvironment was *** its impact on natural gas exploration was *** results show that the seawater paleotemperature was 29℃,suboxicanoxic paleoredox conditions were observed,and the seawater paleosalinity was high.A large number of plankton in the biological explosion caused a rapid increase in the total organic carbon in carbonate rocks,which provided natural gas as supplemental source *** by early meteoric water,the dissolution of gypsum laid the foundation for high-quality reservoirs,and the residual gypsum also further preserved natural *** study provides new data for the paleoenvironment and a theoretical basis for further natural gas exploration.

关键词： Middle darriwilian isotope carbon excursion Paleoenvironment Natural gas exploration Middle ordovician Ordos basin

Graph-ranking collective Chinese entity linking algorithm

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Frontiers of Computer Science 2020年第2期14卷 291-303页

作者： tao XIE Bin WU Bingjing jia Bai WANG Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia Beijing University of Posts and TelecommunicationsBeijing 100876China

Entity linking(EL)systems aim to link entity mentions in the document to their corresponding entity records in a reference knowledge *** EL approaches usually ignore the semantic correlation between the mentions in the text,and are limited to the scale of the local knowledge *** this paper,we propose a novel graphranking collective Chinese entity linking(GRCCEL)algorithm,which can take advantage of both the structured relationship between entities in the local knowledge base and the additional background information offered by external knowledge *** improved weighted word2vec textual similarity and improved PageRank algorithm,more semantic information and structural information can be captured in the *** an incremental evidence mining process,more powerful discrimination capability for similar entities can be *** evaluate the performance of our algorithm on some open domain *** results show the effectiveness of our method in Chinese entity linking task and demonstrate the superiority of our method over state-of-the-art methods.

关键词： collective entity linking knowledge mapping word embedding entity correlation graph PageRank

Reversibly photochromic wood constructed by depositing microencapsulated/polydimethylsiloxane composite coating

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Journal of Forestry Research 2022年第4期33卷 1409-1418页

作者： Zhen jia Wenhui Bao Chengyun tao Wenlong Song School of Mechanical and Electrical Engineering Northeast Forestry UniversityHarbin 150040People’s Republic of China School of Civil Engineering Harbin UniversityHarbin 150086People’s Republic of China

Photochromic wood was fabricated by coating microencapsulated photochromic material(MP)/polydimethylsiloxane composites onto wood using a simple drop-coating ***-melamine–formaldehyde resin was used to microencapsulate the photochromic material(PM)via in situ *** concentration of the MP affected the photochromic property of the wood *** total color change(ΔE*)reached 82.2 when the concentration of the composite coating is 8%.Adhesion tests confirmed that the composite coating adhered firmly to the *** method is potentially useful for the production of functional wooden products,such as anti-counterfeiting materials and aesthetic wood.

关键词： Wood Photochromism Microencapsulation Urea-melamine–formaldehyde resin Drop-coating method

Preparation and adsorption performance of multi-morphology H_(1.6)Mn_(1.6)O_(4) for lithium extraction

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Chinese Journal of Chemical Engineering 2021年第6期34卷 68-76页

作者： Xiulei Li Baifu tao Qingyuan jia Ruili Guo Chemistry and Chemical Engineering Key Laboratory for Green Process of Chemical Engineering of Xinjiang BingtuanShihezi UniversityShihezi 832003China

In this paper,a lithium-ion sieve(LIS)with different morphologies,such as rod-like(LIS-R),spherical(LIS-S),flower-like(LIS-F),and three-dimensional macroporous-mesoporous(LIS-3D),was prepared by hydrothermal synthesis,solid reaction,and hard-template *** results showed that the LIS with different morphologies presented great differences in specific surface area,pore volume,adsorption selectivity,and structure ***-3D with highest specific surface area and pore volume displayed the maximum adsorption capacity and adsorption rate,but the stability of LIS-3D was poor because of the manganese *** comparison,LIS-S has the best structural stability while maintaining a satisfactory adsorption capacity(35.02 mg·g^(-1))and adsorption *** LIS-S remained about 90%of the original adsorption capacity after five cycles of adsorption-desorption *** addition,in the simulated brine system(the magnesium to lithium ratio of 400),the LIS-S exhibited the highest selectivity(α_(Mg)^(Li))of *** sum,the LIS-S with good morphology is a potential adsorbent for lithium extraction from brine.

关键词： Lithium-ion sieve Morphologies Lithium extraction Brine Adsorbent

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拖拉机发动机供油结构优化设计及试验

农机化研究 2025年第4期47卷 252-257,263页

作者：柳涛南阳科技职业学院河南邓州474150

针对拖拉机发动机供油结构进行了优化设计和试验研究。首先,介绍了拖拉机发动机供油系统的组成部分和工作原理,分析了供油系统存在的问题;然后,提出了一种改进的供油结构设计方案,并基于响应面法进行优化试验。试验结果表明:通过分析得... 详细信息

针对拖拉机发动机供油结构进行了优化设计和试验研究。首先,介绍了拖拉机发动机供油系统的组成部分和工作原理,分析了供油系统存在的问题;然后,提出了一种改进的供油结构设计方案,并基于响应面法进行优化试验。试验结果表明:通过分析得到优化结果为转速3 000 r/min、旋转油道直径6 mm、油路压力120 MPa,此时理论摩擦功耗为60.09%,端泄流量为0.602,满足生产要求。研究结果为拖拉机发动机供油系统的优化设计提供了参考依据,具有一定的理论和实际意义。

关键词：拖拉机发动机供油系统优化设计响应面分析

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Morphology Change of Metastable Regrown Graphite with Boron Additive under HPHT

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Journal of Materials Science & Technology 2009年第4期25卷 539-542页

作者： Chuanyi zang Xiaozhou Chen Qiang Hu Wei Guo Guofeng Huang Xiaopeng jia Intitute-of Material Science and Engineering Henan Polytechnic University Jiaozuo 454000 China State Key Laboratory for Superhard Materials Jilin University Changchun 130012 China

By temperature gradient method under high pressure and high temperature （HPHT）, with NiMnCo alloy as the solvent metal, at diamond-stable region of about 5.4 GPa and 1500 K, metastable regrown graphite crystals of different morphology were synthesized. With B as an additive incorporated into the NiMnCo-C system, metastable regrown graphite crystals of sphere-like shape were firstly obtained under HPHT. If the growth system does not contain B, sheet-like regrown graphite crystals, most with regular hexagonal morphology, are grown upwards and standing vertically in the metal solvent. When B additive of 1.0 wt pct was added into carbon source （graphite powder）, all metastable regrown graphite crystals took on the habit of regular sphere-like morphology, and were grown by a spiral layer growth mechanism.

关键词： Graphite High pressure and high temperature Temperature gradient method Morphology

Blind adaptive identification and equalization using bias-compensated NLMS methods

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Science China(Information Sciences) 2022年第5期65卷 184-195页

作者： Zhen ZHANG Lijuan jia Ran tao Yue WANG School of Information and Electronics Beijing Institute of Technology

In this paper, two new blind adaptive identification and equalization algorithms based on second-order statistics are proposed. We consider a practical case where the noise statistics of each transmission channel is unknown. Resorting to the technique of antennas array, a single-input double-output channel can be obtained. We further convert the problem of blind identification into an errors-in-variables(EIV)parameter estimation problem, then we apply the normalized least-mean squares(NLMS) algorithms to tackle the problem. To improve the performance of the NLMS algorithms, we also develop a variable stepsize NLMS(VSS-NLMS) algorithm that ensures the stability of the algorithm and faster convergence speed at the beginning of the iterations process. Under various practical scenarios, noise affects transmission channels;it is necessary to estimate the variance and remove the bias. By modifying the cost function, we present a bias-compensated NLMS(BC-NLMS) algorithm and a bias-compensated NLMS algorithm with variable step-size(BC-VSS-NLMS) to eliminate the bias. The proposed algorithms estimate the variances of the noise online, and therefore, the noise-induced bias can be removed. The estimate of the channel characteristics is available for equalization. Simulation results are presented to demonstrate the performance of the proposed algorithms.

关键词： blind adaptive identification equalization normalized least mean squares algorithm bias compensation errors-in-variables

Frequency-dependent alterations in regional homogeneity in young carriers of the apolipoprotein E genotype

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Science Bulletin 2017年第9期62卷 654-655页

作者： Xi-Ze jia Yi-Wen Zhang Yu-Feng zang Hui-Jie Li CAS Key Laboratory of Behavioral Science Institute of Psychology Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments Center for Cognition and Brain Disorders Hangzhou Normal University Hangzhou 311121 China Institutes of Psychological Sciences Hangzhou Normal University Hangzhou 311121 China

Using resting-state functional magnetic resonance imaging(rf MRI),previous studies showed that the APOE e4 allele might affect the functional connectivity between remote brain regions[1,2].However,the local functional... 详细信息

关键词： test MRI data SPM Re Frequency-dependent alterations in regional homogeneity in young carriers of the apolipoprotein E genotype MTL FWHM FOV

Inner nuclear membrane protein TMEM201 maintains endothelial cell migration and angiogenesis by interacting with the LINC complex

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Journal of Molecular Cell Biology 2022年第3期14卷 48-60页

作者： Yutian Zhang Ya Kong Haoran Guo Yun Liu Yi zang jia Li University of Chinese Academy of Sciences Beĳing 100049China State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China State Key Laboratory of Natural Medicines Jiangsu Key Laboratory of Drug ScreeningChina Pharmaceutical UniversityNanjing 210009China School of Pharmaceutical Science and Technology Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Open Studio for Druggability Research of Marine Natural Products Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The nuclear envelope comprises the outer nuclear membrane,inner nuclear membrane(INM),and ***∼60 INM proteins have been identified,only a few of them have been well characterized,revealing their crucial *** group focused on the INM protein transmembrane protein 201(TMEM201),whose role in cellular function remains to be *** this study,we investigated the role of TMEM201 in endothelial cell migration and *** of TMEM201 expression by short hairpin RNA-mediated interference impeded human umbilical vein endothelial cell(HUVEC)angiogenic behavior in tube formation and fibrin gel bead sprouting ***,TMEM201-deficient HUVECs exhibited impaired migration *** next explored the underlying mechanism and found that the N-terminal of TMEM201 interacted with the linker of nucleoskeleton and cytoskeleton complex and was required for regulating endothelial cell migration and *** in vitro findings were further confirmed by using in vivo *** Tmem201-knockout mice,retinal vessel development was arrested and aortic ring sprouting was *** addition,loss of tmem201 impaired zebrafish intersegmental vessel *** summary,TMEM201 was shown to regulate endothelial cell migration and control the process of *** study is the first to reveal the role of INM proteins in the vascular system and angiogenesis.

关键词： transmembrane protein 201 inner nuclear membrane LINC complex endothelial cell migration angiogenesis