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Acta Oceanologica Sinica 2020年第9期39卷 133-139页

作者： yanan tian Xiao Han Jingwei Yin Hongxia Chen Qingyu Liu Acoustic Science and Technology Laboratory Harbin Engineering UniversityHarbin 150001China Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University) Ministry of Industry and Information TechnologyHarbin 150001China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001China First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China Naval Research Academy Beijing 100161China

An improved least mean square/fourth direct adaptive equalizer(LMS/F-DAE)is proposed in this paper for underwater acoustic communication in the *** is able to process complex-valued baseband signals and has better equalization performance than *** the sparsity feature of equalizer tap coefficients,an adaptive norm(AN)is incorporated into the cost function which is utilized as a sparse *** norm constraint changes adaptively according to the amplitude of each *** small-scale coefficients,the sparse constraint exists to accelerate the convergence *** large-scale coefficients,it disappears to ensure smaller equalization *** performance of the proposed AN-LMS/F-DAE is verified by the experimental data from the 9th Chinese National Arctic Research *** results show that compared with the standard LMS/F-DAE,AN-LMS/F-DAE can promote the sparse level of the equalizer and achieve better performance.

关键词： underwater acoustic communication the Arctic direct adaptive equalizer adaptive norm

The price of carbon risk:Evidence from China's bond market

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China Journal of Accounting Research 2022年第2期15卷 97-119页

作者： Yuhui Wu yanan tian School of Management Xiamen UniversityChina

Using a 2009–2019 sample of Chinese bond issuers,we examine the effect of carbon risk on bond financing *** to low carbon risk issuers,high carbon risk issuers have substantially larger bond credit spreads,mainly because their credit risk is greater and they invest the funds in non-green *** positive relationship is more pronounced for issuers with financing constraints,those not making a green transition and those in cities with stringent environmental *** find a reversed effect during the COVID-19 ***,China’s carbon peak and carbon neutral goals have renewed the focus on carbon *** risk also causes bond issuers to scale back production and negatively affects their likelihood of receiving long-term financial *** findings suggest that investors consider carbon risk and charge a corresponding risk premium.

关键词： Carbon risk Credit spreads Green development

Design and Control of Thermally Coupled Reactive Distillation Sequence for Biodiesel Production

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China Petroleum Processing & Petrochemical Technology 2016年第2期18卷 21-32页

作者： Li Lumin Sun Lanyi Xie Xu tian yanan Shang Jianlong tian Yuanyu State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 SINOPEC Research Institute of Petroleum Processing Beijing 100083

Decreasing petroleum reserves and growing alternative fuels requirements have promoted the study of biodiesel production. In this work, two thermally coupled reactive distillation designs for biodiesel production were investigated, and the sensitivity analysis was conducted to obtain the appropriate design values. The thermodynamic analysis and economics evaluation were performed to estimate the superiority of the thermally coupled designs over the base case. The proposed biodiesel production processes were simulated using the simulator Aspen Plus, and calculation results show that the exergy loss and economic cost in the two thermally coupled designs can be greatly reduced. It is found that the thermally coupled side-stripper reactive distillation design provides more economic benefits than the side-rectifier one. The dynamic performance of the thermally coupled side-stripper design was investigated and the results showed that the proposed control structure could effectively handle large feed disturbances.

关键词： thermally coupled reactive distillation biodiesel production thermodynamic analysis total annual cost control

Genome-wide evolution of MAPKs family and their expression in response to bacterial infection in seahorse Hippocampus erectus

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Journal of Oceanology and Limnology 2021年第6期39卷 2309-2321页

作者： Kai WANG Xin WANG Qiang ZOU Han JIANG Rongrong ZHANG yanan tian Lele ZHANG Qiang LIN School of Agriculture Ludong UniversityYantai 264025China CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Yantai Branch of Shandong Technology Transfer Center Chinese Academy of SciencesYantai 264003China University of Chinese Academy of Sciences Beijing 100049China

Seahorses have evolved many unique biological traits,including a male brood pouch,the absence of caudal and pelvic fins,and the lack of spleen and gut-associated lymphatic *** mitogenactivated protein kinases(MAPKs)are known to be involved in various important biological processes including growth,differentiation,immunity,and stress ***,we hypothesized that the adaptive evolution and expression of the MAPK gene family in seahorse may differ from those of other teleost *** identified positive selection sites in the erk2,erk5,jnk1,and p38αMAPK genes of the lined seahorse Hippocampus erectus and tiger-tailed seahorse Hippocampus comes.A novel expression profile of MAPK cascade genes was found in seahorse larvae during the first day after birth based on the RNA-seq data of ***,which refl ected vital signs of immune response to its parental immune *** expression patterns of the four positively selected MAPK genes were analyzed following the bacterial challenge of Vibrio fortis,revealing their upregulation pattern in brood pouch and other immune *** study enriched our knowledge of the evolution of the *** MAPK subfamilies,and could help better understanding the functional role of MAPKs in teleosts.

关键词： mitogen-activated protein kinases(MAPKs) Hippocampus erectus genomic structure positive selection immune regulation

Medical image lossless compression based on combining an integer wavelet transform with DPCM

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Frontiers of Electrical and Electronic Engineering in China 2009年第1期4卷 1-4页

作者： Lihong ZHAO yanan tian Yonggang SHA Jinghua LI School of Information Science&Engineering Northeastern UniversityShenyang 110004China

To improve the classical lossless compression of low efficiency,a method of image lossless compression with high efficiency is *** theory and the algorithm implementation are *** basic approach of medical image lossless compression is then briefly *** analyzing and implementing differential plus code modulation(DPCM)in lossless compression,a new method of combining an integer wavelet transform with DPCM to compress medical images is *** analysis and simulation results show that this new method is simpler and ***,it has high compression ratio in medical image lossless compression.

关键词： medical image integer wavelet transform differential plus code modulation(DPCM) lossless compression

A Method for Image Segmentation Based on DC-SVM

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A Method for Image Segmentation Based on DC-SVM

Advances in the production technology of hydrogen peroxide

第30届中国控制与决策会议

作者： tian yanan Li Jinghong School of Information Science & Engineering Northeastern University

Image segmentation is one of the most important parts of image recognition and computer vision. On the basis of the support vector machine, the classic C-SVM model is improved. And a support vector model with dynamic penalty factors called DC-SVM is presented and applied to the image segmentation in this paper. Some experiments have been carried out and satisfactory image segmentation results have been obtained.

关键词： Image Segmentation Support Vector Machine Dynamic Penalty Factors

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Chinese Journal of Catalysis 2020年第7期41卷 1039-1047页

作者： Guohua Gao yanan tian Xiaoxiao Gong Zhiyong Pan Keyong Yang Baoning Zong Research Institute of Petroleum Processing SinopecBeijing 100083China

This article mainly summarizes various aspects of hydrogen peroxide(H2O2)production through the anthraquinone route,including hydrogenation catalysts,working solution,regeneration technique,hydrogenation reactors,and environmental *** advances and breakthrough of SINOPEC in the production of H2O2 through the anthraquinone route is presented in this review,highlighting recent innovative technology on these aspects developed *** technical prospect and scientific challenges associated with the direct synthesis method from hydrogen and oxygen are also briefly discussed.

关键词： Hydrogen peroxide Anthraquinone auto-oxidation Hydrogenation of anthraquinone Hydrogenation catalyst Production Technology

Design and Implementation of Blind Sidewalk Recognition System Based on FPGA

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Design and Implementation of Blind Sidewalk Recognition Syst...

LncRNA ZFAS1 regulates cardiomyocyte differentiation of human embryonic stem cells

第30届中国控制与决策会议

作者： Li Jinghong tian yanan Zhang Yantao Li Shuoyang College of Information Science and Engineering Northeastern University

With the popularity of blind sidewalk construction in the city, the blind sidewalk can greatly facilitate the daily travel of blind man. However, in reality, some blind sidewalks often become disrepair, which is not convenient for the blind man to recognize. Some blind sidewalks are also occupied, which brings certain danger to the daily travel of the blind man. To solve this problem, this paper presents a video image blind identification system based on FPGA. The system uses Altera’s DE2 development board as a hardware platform, and collects images through the CMOS image sensor, and realizes the real-time monitoring and recognition of the blind road environment, and provides voice prompts for the dangerous sidewalk sections.

关键词： FPGA DE2 Blind Sidewalk Blind Recognition

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BIOCELL 2023年第6期47卷 1407-1416页

作者： YANG CAO YINING LIU YANG YU XIAOFEI GUO XIUXIU WANG WENYA MA HANJING LI ZHONGYU REN XINLU GAO SIJIA LI HAOYU JI HONGYANG CHEN HONG YAN yanan tian XIN WANG BENZHI CAI Department of Pharmacy The Second Affiliated Hospital of Harbin Medical University(Institute of Clinical PharmacyThe University Key Laboratory of Drug ResearchHeilongjiang Higher Education Institutions)Harbin150086China Department of Pharmacology(State-Province Key Laboratories of Biomedicine-Pharmaceutics of China Key Laboratory of Cardiovascular Medicine ResearchMinistry of Education)College of PharmacyHarbin Medical UniversityHarbin150081China

Background:Cardiomyocytes derived from human embryonic stem cells(hESCs)are regulated by complex and stringent gene networks during *** non-coding RNAs(lncRNAs)exert critical epigenetic regulatory functions in multiple differentiation ***,the involvement of lncRNAs in the differentiation of hESCs into cardiomyocytes has not yet been fully ***,we identified the key roles of ZFAS1(lncRNA zinc finger antisense 1)in the differentiation of cardiomyocytes from ***:A model of cardiomyocyte differentiation from stem cells was established using the monolayer differentiation method,and the number of beating hESCs-derived cardiomyocytes was *** expression was analyzed by quantitative real-time PCR(qRTPCR).Immunofluorescence assays were performed to assess the expression of cardiac troponin T(cTnT)andα-actinin protein in ***:qRT-PCR showed that ZFAS1 expression in the mesoderm was significantly higher than that in embryonic stem cells,cardiac progenitor cells,and *** of ZFAS1 inhibited cardiomyocyte differentiation from hESCs,which was characterized by reduced expression of the cardiac-specific markers cTnT,α-actinin,myosin heavy chain 6(MYH6),and myosin heavy chain 7(MYH7).In contrast,ZFAS1 overexpression remarkably increased the percentage of spontaneously beating *** terms of the mechanism,we found that ZFAS1 is an antisense lncRNA at the 5′end of the protein-coding gene *** of ZFAS1 could increase the mRNA expression level of ***,qRT-PCR demonstrated that the silencing of ZNFX1 led to an increase in cardiac-specific markers that predicted the promotion of cardiomyocyte ***:Altogether,these data suggest that lncRNA-ZFAS1 is required for cardiac differentiation by functionally inhibiting the expression of ZNFX1,which may provide a reference for the treatment of heart disease to a certain extent.

关键词： Long non-coding RNAs Cardiomyocyte differentiation ZFAS1 ZNFX1

新疆博格达峰北坡岩面生壳状地衣的生态位特征

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干旱区资源与环境 2021年第1期35卷 108-113页

作者：田雅楠艾尼瓦尔·吐米尔新疆大学生命科学与技术学院乌鲁木齐830046

为了查明新疆博格达峰北坡岩面生壳状地衣群落中不同地衣种类对资源的利用情况及其分布规律,以15个样方内的岩面生壳状地衣盖度为对象,计算得到了21个种的生态位宽度、生态位相似系数和生态位重叠指数,并以生态位重叠为指标,利用主坐标... 详细信息

为了查明新疆博格达峰北坡岩面生壳状地衣群落中不同地衣种类对资源的利用情况及其分布规律,以15个样方内的岩面生壳状地衣盖度为对象,计算得到了21个种的生态位宽度、生态位相似系数和生态位重叠指数,并以生态位重叠为指标,利用主坐标排序(PCoA)法对他们进行分类。结果表明:包氏饼干衣(Rinodina bohlinii)具有最宽的生态位宽度(B_(i)=0.2765;B_(a)=1.5089);类锈美衣(Calogaya ferrugineoides)的生态位宽度最窄(B_(i)=0.1229;B_(a)=0.7613)。50.5%的种对间生态位相似系数<0.1,说明形成了生态分化。21个种地衣的生态位重叠值范围为(0~0.8562),生态位宽度最宽的包氏饼干衣与大多数地衣种的生态位重叠值都较高,生态位宽度最窄的类锈美衣与大多数地衣种的生态位重叠值也很低。PCoA结果将博格达峰北坡岩面生壳状地衣分为了4个生态类群。

关键词：岩面生壳状地衣生态位宽度生态位重叠主坐标分析